Acknowledgments |
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xix | |
Authors |
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xxi | |
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1 | (8) |
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3 | (6) |
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3 | (1) |
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1.2 Purpose and objectives |
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3 | (1) |
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4 | (1) |
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1.4 Illustration of design approach |
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5 | (2) |
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7 | (1) |
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7 | (2) |
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SECTION II Seismic Demands |
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9 | (156) |
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2 Seismology and site effects |
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11 | (16) |
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2.1 Purpose and objectives |
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11 | (1) |
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2.2 Earthquake sources and wave propagation |
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11 | (3) |
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2.3 Earthquake magnitude and macroseismic intensity |
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14 | (3) |
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2.4 Near-source, topographic, and site effects on ground motion |
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17 | (1) |
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2.5 Geological and geotechnical hazards |
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18 | (1) |
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2.6 Quantitative measures of intensity based on ground motion records |
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19 | (6) |
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25 | (2) |
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3 Dynamics of linear elastic SDOF oscillators |
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27 | (24) |
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3.1 Purpose and objectives |
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27 | (1) |
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27 | (3) |
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3.2.1 Newton's first and second laics of motion |
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27 | (1) |
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3.2.2 Free-body diagram for SDOF systems |
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28 | (2) |
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3.3 Undamped free vibration of linear elastic systems |
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30 | (1) |
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3.4 Damped free vibration of linear elastic systems |
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31 | (1) |
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3.5 Forced vibration of linear elastic systems and resonance |
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32 | (3) |
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3.6 Numerical solutions of damped forced vibration |
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35 | (4) |
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3.7 Earthquake-induced ground excitation |
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39 | (10) |
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3.7.1 Equation of motion for linear elastic response |
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39 | (1) |
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40 | (1) |
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3.7.3 Elastic response spectrum |
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41 | (5) |
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3.7.4 Elastic design spectrum |
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46 | (2) |
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3.7.5 Determination of characteristic period of the ground motion |
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48 | (1) |
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49 | (2) |
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4 Dynamics of nonlinear SDOF oscillators |
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51 | (50) |
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4.1 Purpose and objectives |
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51 | (1) |
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51 | (1) |
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52 | (4) |
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4.4 Influence of hysteretic features on dynamic response |
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56 | (2) |
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4.5 Energy components in nonlinear response |
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58 | (3) |
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61 | (7) |
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63 | (3) |
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4.6.2 Ibarra--Medina--Krawinkler model |
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66 | (1) |
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66 | (2) |
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4.7 Damping in the nonlinear response of SDOF oscillators |
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68 | (1) |
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4.8 Response of individual oscillators |
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69 | (10) |
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69 | (1) |
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4.8.2 Solution approaches |
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70 | (1) |
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4.8.3 Solution by linear acceleration method |
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71 | (1) |
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4.8.4 Nondimensional response parameters |
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72 | (2) |
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4.8.5 Trends in inelastic response |
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74 | (3) |
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4.8.6 Variability in inelastic response as seen with incremental dynamic analysis |
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77 | (2) |
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4.9 Inelastic response spectra |
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79 | (6) |
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4.9.1 Constant ductility iterations |
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80 | (1) |
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4.9.2 Types of inelastic response spectra |
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81 | (1) |
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4.9.3 Graphical forms of inelastic response spectra |
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82 | (3) |
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4.10 Predictive relationships and design spectra |
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85 | (6) |
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4.10.1 Development of R--μ--T relationships |
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85 | (1) |
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85 | (2) |
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4.10.3 FEMA-440 R--μ--T relationship |
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87 | (1) |
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4.10.4 Cuesta et al. R--μ--T/Tg relationship |
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88 | (1) |
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88 | (1) |
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4.10.6 Flag-shaped models |
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88 | (3) |
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4.11 P-Δ effects for SDOF systems |
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91 | (5) |
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91 | (1) |
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4.11.2 Effective height formulation |
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92 | (2) |
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94 | (1) |
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4.11.4 Practical observations and limits |
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94 | (2) |
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4.12 Equivalent linearization |
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96 | (1) |
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97 | (4) |
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5 Dynamics of linear and nonlinear MDOF systems |
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101 | (28) |
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5.1 Purpose and objectives |
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101 | (1) |
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5.2 Linear elastic systems |
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101 | (17) |
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5.2.1 Equation of motion of a linear elastic system subjected to applied forces |
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101 | (2) |
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5.2.2 Equation of motion of a linear elastic system subjected to base excitation |
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103 | (2) |
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5.2.3 Undamped free vibration and natural modes and frequencies |
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105 | (5) |
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5.2.4 Orthogonality of mode shapes |
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110 | (1) |
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5.2.5 Modal decomposition of displacement history |
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110 | (1) |
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5.2.6 Modal response history analysis |
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111 | (1) |
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5.2.7 Modal decomposition of effective force |
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111 | (1) |
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5.2.8 Damping of linear elastic systems |
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112 | (2) |
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5.2.9 Equivalent (statically applied) lateral forces |
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114 | (1) |
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5.2.10 Effective modal mass |
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115 | (1) |
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5.2.11 Effective modal height |
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116 | (1) |
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5.2.12 Peak response estimates by response spectrum analysis |
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117 | (1) |
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118 | (9) |
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5.3.1 Equation of motion for nonlinear systems |
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118 | (1) |
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5.3.2 Solution by direct integration time history analysis |
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119 | (1) |
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5.3.3 Treatment of damping |
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120 | (2) |
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5.3.4 Inelastic response assessment via nonlinear response history analysis |
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122 | (5) |
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127 | (2) |
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6 Characterization of dynamic response using Principal Components Analysis |
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129 | (1) |
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6.1 Purpose and objectives |
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129 | (1) |
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129 | (1) |
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130 | (13) |
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6.4 Application to displacement response |
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131 | (4) |
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6.5 PGA mode shapes of various response quantities |
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135 | (2) |
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137 | (2) |
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6.7 Comparison of elastic and PCA mode shapes |
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139 | (3) |
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142 | (1) |
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7 Equivalent SDOF systems and nonlinear static (pushover) analysis |
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143 | (22) |
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7.1 Purpose and objectives |
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143 | (1) |
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143 | (1) |
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7.3 Theoretical derivation of conventional ESDOF system |
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143 | (2) |
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7.4 Nonlinear static (pushover) analysis |
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145 | (4) |
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7.5 Displacement estimates |
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149 | (1) |
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7.6 Representation of cracking and crack closure in models; geometric similarity |
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150 | (5) |
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7.7 Energy-based pushover |
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155 | (6) |
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7.8 Challenges faced in estimating other response quantities |
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161 | (3) |
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164 | (1) |
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SECTION III Essential Concepts of Earthquake-Resistant Design |
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165 | (2) |
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8 Principles of earthquake-resistant design |
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167 | (1) |
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8.1 Purpose and objectives |
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167 | (1) |
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167 | (1) |
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8.2.1 Ductile structural systems can he designed for reduced forces |
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167 | (2) |
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8.2.2 Energy dissipation is not an objective (but decoupling response from input is) |
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169 | (1) |
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8.2.3 Deformation demands must be accommodated |
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169 | (1) |
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8.2.4 Choice of structural system impacts performance |
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169 | (1) |
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8.2.5 Use complete, straightforward, and redundant load paths |
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170 | (1) |
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8.2.6 Avoid brittle failures using capacity design principles |
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171 | (1) |
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8.2.7 Incorporate higher mode effects |
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172 | (1) |
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8.2.8 Use recognized LFRSs and detailing provisions |
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173 | (1) |
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8.2.9 Recognize limitations of planar thinking and analysis |
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174 | (1) |
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8.2.10 Keep diaphragms elastic and stiff |
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175 | (1) |
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8.2.11 Provide for deformation compatibility |
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175 | (1) |
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8.2.12 Eliminate unnecessary mass |
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176 | (1) |
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8.2.13 Avoid irregularities |
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176 | (1) |
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8.2.14 Anchor nonstructural components to the structure |
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177 | (1) |
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8.2.15 Restrain mechanical equipment and piping |
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177 | (1) |
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8.2.16 Restrain building contents |
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177 | (1) |
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8.2.17 Avoid pounding between adjacent structures |
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177 | (1) |
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8.3 Additional considerations |
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178 | (1) |
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178 | (1) |
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9 Stability of the yield displacement |
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179 | (2) |
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9.1 Purpose and objectives |
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181 | (1) |
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181 | (1) |
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9.3 Kinematics of yield---Members |
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181 | (5) |
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9.4 Kinematics of yield---Lateral force resisting systems |
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186 | (3) |
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9.5 Yield drift estimates for reinforced concrete lateral force-resting systems |
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189 | (2) |
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9.5.1 Moment--resistant frames |
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190 | (1) |
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191 | (1) |
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191 | (1) |
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191 | (1) |
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192 | (1) |
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10 Performance-based seismic design |
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193 | (10) |
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10.1 Purpose and objectives |
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193 | (1) |
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193 | (1) |
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10.3 Performance expectations in building codes |
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194 | (1) |
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10.4 Modem performance objectives |
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195 | (1) |
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10.5 Treatment of performance objectives in design |
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195 | (1) |
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10.6 Consideration of performance objectives in preliminary design |
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196 | (3) |
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10.7 Design validation and iteration |
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199 | (2) |
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201 | (2) |
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11 Plastic mechanism analysis |
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203 | (16) |
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11.1 Purpose and objectives |
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203 | (1) |
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203 | (1) |
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11.3 Plastic mechanism analysis |
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204 | (5) |
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11.4 Interaction with gravity load |
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209 | (2) |
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11.5 Reinforced concrete lateral force-resisting systems |
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211 | (1) |
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11.6 Design for designated mechanisms |
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212 | (4) |
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11.7 Consideration of multi-degree-of-freedom effects |
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216 | (3) |
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217 | |
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12 Proportioning of earthquake-resistant structural systems |
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219 | (26) |
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12.1 Purpose and objectives |
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219 | (1) |
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219 | (1) |
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12.3 Generic drift profiles |
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219 | (2) |
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12.4 Estimates of modal parameters for preliminary design |
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221 | (1) |
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12.5 Proportioning for ductile response |
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221 | (3) |
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12.6 The influence of overstrength on system ductility demands |
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224 | (6) |
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12.6.1 Overstrength and implied system ductility capacities from an American perspective |
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225 | (3) |
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12.6.2 Overstrength and implied system ductility capacities from a Eurocode perspective |
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228 | (2) |
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230 | (5) |
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12.7.1 Application of interstory drift limits from an American perspective |
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231 | (3) |
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12.7.2 Application of interstory drift limits from a Eurocode perspective |
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234 | (1) |
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12.8 Vertical distribution of strength and stiffness |
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235 | (8) |
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12.8.1 Distribution of base shear over height |
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235 | (3) |
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12.8.2 Modification of base shear |
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238 | (1) |
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12.8.3 Design of components based on plastic mechanism analysis |
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239 | (4) |
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243 | (2) |
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13 Probabilistic considerations |
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245 | (58) |
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13.1 Purpose and objectives |
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245 | (1) |
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13.2 Probability and statistics for safety assessment |
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245 | (21) |
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13.2.1 Fundamentals of probabilistic modeling |
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247 | (1) |
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13.2.2 Mathematical basis of probability |
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247 | (2) |
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13.2.3 Conditional probability |
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249 | (1) |
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13.2.4 Random variables and univariate distributions |
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250 | (1) |
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13.2.5 Standard univariate distribution models |
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251 | (5) |
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13.2.6 Multivariate probability distributions and correlation |
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256 | (2) |
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13.2.7 Derived distributions (or how to propagate probability/uncertainty via Monte Carlo) |
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258 | (3) |
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13.2.8 Modeled versus unmodeled variables and practical treatment |
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261 | (1) |
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13.2.8.1 Examples of modeled versus unmodeled variables |
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262 | (1) |
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13.2.8.2 The first-order assumption for model error |
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263 | (1) |
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13.2.8.3 Smeared versus discrete treatment of unmodeled uncertainty |
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264 | (2) |
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13.3 Probabilistic seismic hazard analysis |
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266 | (10) |
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13.3.1 Occurrence of random events and the Poisson process |
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266 | (3) |
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13.3.2 The seismic hazard integral |
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269 | (1) |
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270 | (1) |
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13.3.4 Magnitude--distance distribution |
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270 | (2) |
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13.3.5 Ground motion prediction equations |
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272 | (1) |
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13.3.6 Hazard surface, hazard curves, and uniform hazard spectra |
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272 | (3) |
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13.3.7 Risk-targeted spectra |
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275 | (1) |
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13.4 Assessment of performance |
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276 | (18) |
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13.4.1 Performance objectives |
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277 | (1) |
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13.4.2 Practical assessment of performance |
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278 | (1) |
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279 | (3) |
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282 | (3) |
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13.4.3 Example of application |
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285 | (1) |
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286 | (4) |
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13.4.3.2 DCFD format---Single stripe |
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290 | (2) |
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13.4.3.3 DCFD format---Double stripe |
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292 | (2) |
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13.5 Performance-based design |
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294 | (6) |
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294 | (1) |
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294 | (3) |
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13.5.3 Example of application |
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297 | (3) |
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300 | (3) |
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14 System modeling and analysis considerations |
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303 | (16) |
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14.1 Purpose and objectives |
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303 | (1) |
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14.2 Use of analysis for design |
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303 | (1) |
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14.3 Analysis considerations |
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304 | (2) |
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14.3.1 Nonlinearities represented in the analysis |
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304 | (1) |
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14.3.2 Information required for modeling response |
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305 | (1) |
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14.3.3 Use of equivalent single degree-of-freedom systems |
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305 | (1) |
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14.3.4 Emulated collapse modes and force-protected members |
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305 | (1) |
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14.4 Spatial complexity of model |
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306 | (4) |
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14.4.1 Selection of components to represent |
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306 | (1) |
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14.4.2 Choice of two- and three-dimensional models |
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306 | (1) |
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14.4.3 Representation of gravity framing in the model |
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307 | (1) |
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14.4.4 Use of simplified models |
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308 | (1) |
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14.4.5 Discretization in modeling structural system |
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309 | (1) |
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14.5 Floor and roof diaphragm considerations |
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310 | (2) |
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312 | (2) |
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314 | (2) |
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14.8 Foundations and soil-structure interaction |
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316 | (1) |
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14.9 Model development and validation |
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317 | (1) |
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318 | (1) |
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SECTION IV Reinforced Concrete Systems |
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319 | (112) |
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15 Component proportioning and design based on ACI 318 |
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321 | (50) |
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15.1 Purpose and objectives |
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321 | (1) |
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321 | (1) |
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15.3 Strength reduction factors |
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322 | (1) |
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322 | (1) |
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15.5 Beams of special moment-resistant frames |
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323 | (5) |
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15.5.1 Beam width and depth |
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323 | (1) |
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15.5.2 Beam longitudinal reinforcement |
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323 | (1) |
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15.5.2.1 Member proportioning |
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324 | (1) |
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15.5.3 Beam probable flexural strength |
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325 | (1) |
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15.5.4 Beam transverse reinforcement configuration |
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325 | (1) |
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15.5.5 Beam transverse reinforcement spacing |
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326 | (2) |
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15.6 Columns of special moment-resistant frames |
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328 | (9) |
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15.6.1 Section dimensions and reinforcement limits |
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328 | (1) |
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15.6.1.1 Column proportioning |
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328 | (2) |
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15.6.2 Column flexural strength |
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330 | (2) |
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15.6.3 Column transverse reinforcement configuration |
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332 | (1) |
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15.6.4 Column transverse reinforcement spacing requirements |
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332 | (1) |
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15.6.4.1 Confinement in potential plastic binge zones and at lap splices |
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332 | (3) |
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15.6.4.2 Transverse reinforcement outside of potential plastic hinge zones |
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335 | (1) |
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15.6.4.3 Transverse reinforcement for shear strength |
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335 | (2) |
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15.7 Beam-column joints in special moment-resistant frames |
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337 | (7) |
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15.7.1 Joint proportioning |
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338 | (1) |
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15.7.1.1 Joint dimensions |
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338 | (1) |
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15.7.1.2 Joint shear strength |
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339 | (1) |
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15.7.2 Transverse reinforcement |
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339 | (4) |
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15.7.3 Development of longitudinal reinforcement |
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343 | (1) |
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15.8 Special structural walls and coupled walls |
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344 | (14) |
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15.8.1 Proportioning of slender walls |
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346 | (2) |
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15.8.2 Proportioning of coupled walls |
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348 | (1) |
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15.8.3 Detailing of boundary zones |
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349 | (3) |
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352 | (1) |
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15.8.5 Curtailment of reinforcement over the height |
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353 | (1) |
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15.8.6 Design of wall piers |
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354 | (1) |
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15.8.7 Anchorage and splices of reinforcement |
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355 | (1) |
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15.8.7.1 Anchorage of longitudinal reinforcement |
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355 | (1) |
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15.8.7.2 Splices of longitudinal reinforcement |
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355 | (1) |
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15.8.7.3 Anchorage of horizontal web reinforcement |
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555 | (1) |
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15.8.8 Force transfer and detailing in regions of discontinuity |
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356 | (1) |
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15.8.8.1 Strut and tie models |
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356 | (1) |
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15.8.8.2 Detailing at boundaries of wall piers |
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356 | (1) |
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15.8.8.3 Detailing at the base of coupled shear walls |
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357 | (1) |
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15.8.8.4 Detailing for transfer to collectors |
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357 | (1) |
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15.8.9 Detailing for constructability |
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358 | (1) |
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15.8.9.1 Openings in walls |
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358 | (1) |
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15.8.9.2 Shear strength at construction joints (shear friction) |
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358 | (1) |
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358 | (1) |
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15.9.1 Proportioning of coupling beams |
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358 | (1) |
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15.10 Post-tensioned cast-in-place walls |
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359 | (5) |
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15.10.1 Guidelines for proportioning post-tensioned walls |
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361 | (2) |
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15.10.2 Modeling the load-displacement response of post-tensioned walls |
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363 | (1) |
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364 | (3) |
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15.11.1 Proportioning of rocking footings |
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365 | (2) |
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15.12 Floor diaphragms, chords, and collectors |
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367 | (1) |
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368 | (1) |
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368 | (1) |
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368 | (3) |
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16 Component proportioning and design requirements according to Eurocodes 2 and 8 |
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371 | (20) |
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16.1 Purpose and objectives |
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371 | (1) |
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371 | (2) |
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16.3 The seismic action in Eurocode-8 |
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373 | (4) |
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375 | (1) |
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16.3.2 Material safety factors and load combination in analysis |
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375 | (2) |
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16.4 Performance of the structural system |
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377 | (3) |
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16.4.1 Behavior factor (q) and system ductilities |
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378 | (2) |
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16.4.2 Story drift limits |
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380 | (1) |
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16.5 Design of beams and columns in DCM and DCH structures |
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380 | (5) |
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16.6 Design of walls in DCM and DCH structures |
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385 | (4) |
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389 | (2) |
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17 Component modeling and acceptance criteria |
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391 | (40) |
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17.1 Purpose and objectives |
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391 | (1) |
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391 | (1) |
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392 | (9) |
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17.3.1 Moment-curvature response |
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392 | (3) |
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17.3.2 Plastic hinge models for load-deformation response of members |
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395 | (2) |
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397 | (2) |
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17.3.4 Robust design in the context of modeling uncertainty |
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399 | (2) |
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17.4 Expected material properties |
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401 | (1) |
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17.5 Properties of confined concrete |
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402 | (1) |
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17.6 Nominal, reliable, and expected strengths |
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403 | (1) |
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17.7 Element discretization and modeling |
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404 | (5) |
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17.7.1 Sources of flexibility |
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404 | (1) |
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17.7.2 Hysteretic behavior |
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404 | (2) |
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17.7.3 Modeling---Element formulations |
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406 | (1) |
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17.7.3.1 Distributed plasticity elements |
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406 | (2) |
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17.7.3.2 Lumped plasticity elements |
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408 | (1) |
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17.7.4 Generalized load--displacement models |
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408 | (1) |
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409 | (19) |
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17.8.1 Beams and Tee beams |
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409 | (1) |
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17.8.1.1 Effective stiffness |
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409 | (3) |
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17.8.1.2 Beam plastic hinge (and anchorage slip) |
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412 | (2) |
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17.8.1.3 Acceptance criteria for beam plastic hinge rotations |
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414 | (1) |
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414 | (1) |
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17.8.2.1 Column stiffness |
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414 | (4) |
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17.8.2.2 Column plastic hinge (and anchorage slip) |
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418 | (1) |
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17.8.2.3 Acceptance criteria for column plastic hinge rotations |
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419 | (1) |
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17.8.3 Beam-column joints |
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419 | (1) |
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419 | (2) |
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17.8.3.2 Acceptance criteria for beam-column joint deformations |
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421 | (1) |
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17.8.4 Walls and coupled walls |
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421 | (1) |
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17.8.4.1 Stiffness of elastic wall elements |
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421 | (2) |
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17.8.4.2 Wall plastic hinges |
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423 | (1) |
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17.8.4.3 Acceptance criteria for wall plastic hinges |
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423 | (1) |
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424 | (1) |
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17.8.5.1 Proportioning of coupling beams |
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424 | (1) |
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17.8.5.2 Elastic stiffness |
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425 | (1) |
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17.8.5.3 Coupling beam plastic binge |
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425 | (1) |
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17.8.5.4 Acceptance criteria for coupling beam plastic rotations |
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425 | (1) |
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17.8.6 Post-tensioned reinforced concrete walls |
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425 | (1) |
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17.8.6.1 Modeling of post-tensioned walls |
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425 | (1) |
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17.8.6.2 Acceptance criteria |
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426 | (1) |
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17.8.7 Collectors, floor diaphragms, and chords |
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426 | (1) |
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17.8.8 Rocking footings as plastic hinges |
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426 | (1) |
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17.8.8.1 Modeling and acceptance criteria for rocking footings |
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426 | (2) |
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428 | (3) |
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SECTION V Design methods and examples |
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431 | (116) |
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433 | (14) |
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18.1 Purpose and objectives |
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433 | (1) |
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433 | (2) |
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18.3 Design Method A (quasi-code) |
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435 | (2) |
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18.4 Design Method B (simplified dynamic) |
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437 | (4) |
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18.5 Design Method C (dynamic) |
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441 | (1) |
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18.6 Treatment of uncertainty |
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441 | (3) |
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18.7 Confidence levels in design and capacity assessment |
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444 | (1) |
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445 | (2) |
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|
447 | (78) |
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19.1 Purpose and objectives |
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447 | (1) |
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|
447 | (1) |
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19.3 Application of yield frequency spectra and performance assessment methodologies |
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447 | (3) |
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19.4 Site seismic hazard and ground motions |
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450 | (4) |
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454 | (1) |
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19.6 Moment frame plan, elevation, and modeling (Examples 1-3) |
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454 | (7) |
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19.6.1 Distributed plasticity model |
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|
455 | (1) |
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19.6.2 Lumped plasticity model |
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456 | (1) |
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|
457 | (1) |
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|
457 | (1) |
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19.6.2.3 Example of calculating beam modeling parameters and assessment criteria |
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458 | (3) |
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19.7 Example 1: Moment-resistant frame designed using Method A |
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461 | (20) |
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|
461 | (1) |
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19.7.2 Use of nonlinear response analysis in this example |
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|
461 | (1) |
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19.7.3 Required base shear strength |
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|
461 | (1) |
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19.7.4 Design lateral forces and required member strengths |
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|
462 | (3) |
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19.7.5 Sizing of RC members |
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465 | (2) |
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19.7.6 Preliminary evaluation of the initial design |
|
|
467 | (3) |
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19.7.7 Nonlinear modeling and acceptance criteria |
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|
470 | (2) |
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19.7.8 Performance evaluation of the initial design by nonlinear dynamic analysis |
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|
472 | (9) |
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19.8 Example 2: Moment-resistant frame designed using Method B |
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|
481 | (13) |
|
19.8.1 Performance objectives |
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|
481 | (1) |
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19.8.2 Use of nonlinear response analysis in this example |
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|
481 | (1) |
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19.8.4 Assumptions required to generate YFS based on ASCE-7 UHS |
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|
482 | (1) |
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19.8.5 Required base shear strength |
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|
482 | (1) |
|
19.8.6 Design lateral forces and required member strengths |
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|
483 | (1) |
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19.8.7 Sizing of RC members |
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|
484 | (3) |
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19.8.8 Preliminary evaluation of the initial design by nonlinear static (pushover) analysis |
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|
487 | (2) |
|
19.8.9 Nonlinear modeling and acceptance criteria |
|
|
489 | (1) |
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19.8.10 Performance evaluation of the initial design by nonlinear dynamic analysis |
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|
490 | (4) |
|
19.9 Example 3: Moment-resistant frame designed using Method C |
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|
494 | (15) |
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|
494 | (1) |
|
19.9.2 Use of nonlinear response analysis in this example |
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|
494 | (1) |
|
19.9.3 System ductility limits |
|
|
494 | (1) |
|
19.9.4 Assumptions required to generate YFS |
|
|
495 | (1) |
|
19.9.5 Required yield strength coefficient, Cy |
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|
495 | (2) |
|
19.9.6 Required base shear strength |
|
|
497 | (1) |
|
19.9.7 Design lateral forces and required member strengths |
|
|
497 | (1) |
|
19.9.8 Sizing of RC members |
|
|
498 | (1) |
|
19.9.9 Preliminary evaluation of the initial design by nonlinear static (pushover) analysis |
|
|
499 | (2) |
|
19.9.10 Nonlinear modeling and acceptance criteria |
|
|
501 | (3) |
|
19.9.11 Performance evaluation of the initial design by nonlinear dynamic analysis |
|
|
504 | (5) |
|
19.10 Example 4: Coupled wall designed using Method A |
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|
509 | (13) |
|
19.10.1 Coupled wall example plan and elevation |
|
|
509 | (1) |
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|
509 | (1) |
|
19.10.5 Use of nonlinear response analysis in this example |
|
|
509 | (1) |
|
19.10.4 Required base shear strength |
|
|
510 | (2) |
|
19.10.5 Design lateral forces and required member strengths |
|
|
512 | (1) |
|
19.10.6 Sizing of RC members |
|
|
513 | (1) |
|
19.10.7 Preliminary evaluation of the initial design |
|
|
514 | (1) |
|
19.10.8 Nonlinear modeling and acceptance criteria |
|
|
514 | (4) |
|
19.10.9 Performance evaluation of the initial design by nonlinear dynamic analysis |
|
|
518 | (4) |
|
19.11 Example 5: Cantilever shear wall designed using Method B |
|
|
522 | (1) |
|
19.11.1 Cantilever wall example plan and elevation |
|
|
522 | (1) |
|
|
523 | (1) |
|
19.11.3 Use of nonlinear response analysis in this example |
|
|
523 | (1) |
|
19.1 1.4 System ductility limit |
|
|
523 | (2) |
|
19.11.5 Assumptions required to generate YFS based on EC-8 UHS |
|
|
524 | (1) |
|
19.11.6 Required base shear strength |
|
|
524 | (1) |
|
19.11.7 Design lateral forces and required member strengths |
|
|
524 | (1) |
|
19.11.8 Sizing of RC members |
|
|
524 | (1) |
|
19 11.9 Preliminary evaluation of the initial design by nonlinear static (pushover) analysis |
|
|
525 | (22) |
|
19.11.10 Nonlinear modeling and acceptance criteria |
|
|
526 | (4) |
|
19.11.11 Performance evaluation of the initial design by nonlinear dynamic analysis |
|
|
530 | (2) |
|
19.12 Example 6: Unbonded post-tensioned wall designed using Method C |
|
|
532 | (12) |
|
19.12.1 Floor plan and elevation |
|
|
532 | (1) |
|
|
533 | (1) |
|
19.12.3 Use of nonlinear response analysis in this example |
|
|
533 | (1) |
|
19.12.4 Effect of quantity of seven-wire strands on wall behavior |
|
|
533 | (1) |
|
|
534 | (1) |
|
19.12.6 YFS based on an assumed normalized capacity curve |
|
|
535 | (1) |
|
|
536 | (2) |
|
19.12.8 Nonlinear modeling and acceptance criteria |
|
|
538 | (3) |
|
19.12.9 Performance evaluation of the initial design by nonlinear response history analysis |
|
|
541 | (3) |
|
|
544 | (3) |
Appendix 1 |
|
547 | (14) |
Appendix 2 |
|
561 | (8) |
Appendix |
|
569 | (4) |
Index |
|
573 | |