List of Figures |
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xv | |
List of Tables |
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xxiii | |
Preface |
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xxv | |
About the Author |
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xxvii | |
Part 1 Design and analyses for smart PR-CFT connections |
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3 | (6) |
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3 | (6) |
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2 Design and modeling for smart PR-CFT connection systems |
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9 | (102) |
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2.1 History of related systems |
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9 | (6) |
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9 | (1) |
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2.1.2 PR connection systems |
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9 | (2) |
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2.1.3 Steel beam to CFT column connection |
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11 | (2) |
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2.1.4 Application of SMA in structures |
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13 | (2) |
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2.2 Unique characteristics for PR-CFT connection study |
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15 | (2) |
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2.3 Design procedure for prototype structures |
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17 | (24) |
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2.3.1 Design requirement strength |
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18 | (1) |
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2.3.2 Composite column strength |
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18 | (3) |
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2.3.3 Component member strength |
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21 | (16) |
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2.3.3.1 Components with slip |
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22 | (10) |
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2.3.3.2 Components without slip |
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32 | (5) |
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2.3.4 Composite panel zone strength |
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37 | (4) |
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2.4 Preliminary design procedure for connection components |
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41 | (9) |
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2.4.1 Composite column design |
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41 | (2) |
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2.4.2 End plate connection |
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43 | (4) |
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47 | (2) |
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2.4.4 Clip angle connection |
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49 | (1) |
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2.5 Connection design and examples |
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50 | (12) |
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53 | (1) |
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53 | (1) |
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2.5.3 Typical configurations |
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54 | (1) |
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55 | (7) |
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62 | (2) |
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2.7 Composite frame design |
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64 | (16) |
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2.7.1 Characteristics of composite moment frames |
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64 | (3) |
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2.7.2 Building configurations |
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67 | (5) |
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2.7.2.1 Building description for 4 story building |
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69 | (2) |
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2.7.2.2 Building description for 6 story building |
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71 | (1) |
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2.7.3 Seismic design method |
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72 | (4) |
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2.7.3.1 Load combinations |
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73 | (1) |
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2.7.3.2 Equivalent lateral loads |
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73 | (1) |
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2.7.3.3 Regulations and limits |
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74 | (2) |
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2.7.4 Design of composite moment frame specimens |
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76 | (4) |
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2.8 FE modeling for connection systems |
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80 | (16) |
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2.8.1 3D solid modeling method |
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82 | (1) |
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2.8.2 Modeling parts and elements adopted |
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82 | (3) |
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2.8.3 Material properties |
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85 | (3) |
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2.8.4 Interface conditions |
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88 | (4) |
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92 | (1) |
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93 | (1) |
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93 | (3) |
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2.9 2D frame models and analyses |
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96 | (8) |
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96 | (1) |
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2.9.2 Joint model of the end-plate connection |
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97 | (3) |
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2.9.3 Joint model of the T-stub connection |
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100 | (4) |
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2.10 Nonlinear analyses of composite moment frames |
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104 | (7) |
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2.10.1 Introduction to nonlinear analyses |
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104 | (1) |
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2.10.2 Failure mechanism for composite frame models |
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105 | (2) |
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2.10.3 Performance evaluation (ESR) |
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107 | (4) |
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3 Analyses for smart PR-CFT connections (end plate connection type) |
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111 | (40) |
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111 | (3) |
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3.2 Design for new connections |
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114 | (1) |
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114 | (1) |
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115 | (1) |
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3.3 Three-dimensional finite element analyses |
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115 | (6) |
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3.3.1 Modeling procedures |
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115 | (3) |
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3.3.2 FE analysis results |
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118 | (1) |
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119 | (2) |
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3.4 Connection models under cyclic loads |
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121 | (8) |
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3.4.1 Simplified 2D joint models |
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121 | (4) |
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125 | (2) |
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3.4.3 Cyclic test results and observations |
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127 | (2) |
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3.5 Composite moment frames |
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129 | (2) |
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3.6 Design methodology for composite moment frames |
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131 | (7) |
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131 | (1) |
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3.6.2 Building configuration |
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131 | (1) |
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3.6.3 Seismic design loads |
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132 | (3) |
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3.6.4 Numerical modeling attributes |
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135 | (3) |
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138 | (5) |
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138 | (1) |
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3.7.2 Nonlinear pushover analysis |
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139 | (3) |
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3.7.3 Nonlinear dynamic analysis |
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142 | (1) |
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143 | (5) |
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3.8.1 Performance-based evaluation |
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143 | (3) |
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146 | (2) |
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3.9 Summary and conclusion |
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148 | (3) |
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4 Analyses for smart PR-CFT connections (T-stub connection type) |
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151 | (24) |
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151 | (4) |
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4.2 New connection designs |
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155 | (1) |
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4.3 Joint models and cyclic tests |
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155 | (8) |
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156 | (1) |
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156 | (2) |
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158 | (4) |
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4.3.4 Model verification and validation |
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162 | (1) |
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163 | (1) |
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164 | (6) |
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4.5.1 Nonlinear pushover analysis results |
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166 | (1) |
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4.5.2 Nonlinear dynamic analysis results |
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167 | (1) |
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4.5.3 Performance evaluations |
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168 | (2) |
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4.6 Summary and conclusions |
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170 | (5) |
Part 2 Design and analyses for bolted connections |
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5 Bolted connections (FE models) |
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175 | (20) |
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175 | (1) |
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176 | (1) |
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5.3 Theoretical background |
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177 | (8) |
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5.3.1 Full connection behavior |
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177 | (3) |
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5.3.2 Component strength models |
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180 | (4) |
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184 | (1) |
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5.4 3D FE T-stub connection models |
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185 | (1) |
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186 | (3) |
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5.6 Investigations of FE analysis results |
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189 | (5) |
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194 | (1) |
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6 Bolted connections (component models) |
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195 | (30) |
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195 | (1) |
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196 | (4) |
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200 | (15) |
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6.3.1 Mechanical joint model |
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200 | (1) |
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6.3.2 Component stiffness |
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201 | (13) |
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6.3.2.1 T-stub flange and tension bolts |
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203 | (5) |
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208 | (2) |
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6.3.2.3 Slip and bearing model |
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210 | (4) |
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214 | (1) |
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6.4 Numerical modeling attributes |
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215 | (2) |
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215 | (2) |
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6.4.2 Full-scale T-stub connections |
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217 | (1) |
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217 | (6) |
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219 | (3) |
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6.5.2 Full-scale connection tests |
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222 | (1) |
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223 | (2) |
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7 Recentering bolted connections (component models) |
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225 | (18) |
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225 | (1) |
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226 | (2) |
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228 | (4) |
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7.4 Behavior of both types of connection models |
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232 | (8) |
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7.4.1 Behavior of traditional steel bolted clip-angle connections |
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232 | (3) |
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7.4.2 Behavior of SMA bolted clip-angle connections |
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235 | (4) |
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7.4.3 Numerical analysis results and observations |
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239 | (1) |
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240 | (3) |
Part 3 Design and analyses for other smart connections |
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8 Gusset plate connections |
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243 | (22) |
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243 | (2) |
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8.2 Selection of representative example |
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245 | (1) |
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8.3 Design resistance strength |
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246 | (6) |
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8.4 3D FE gusset plate connection models |
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252 | (3) |
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255 | (3) |
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258 | (2) |
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8.7 Investigations of FE analysis results |
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260 | (3) |
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263 | (2) |
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9 Recentering slit damper connection |
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265 | (18) |
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265 | (1) |
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9.2 Sample slit damper specimens |
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266 | (3) |
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9.3 Finite element models |
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269 | (1) |
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9.4 UMAT equations and simulation |
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270 | (3) |
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9.5 Analysis result and verification |
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273 | (5) |
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9.6 Comparison and observation |
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278 | (4) |
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282 | (1) |
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10 Smart damping connectors |
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283 | (30) |
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283 | (1) |
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284 | (2) |
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10.3 Frame design and description |
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286 | (4) |
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10.4 Analytical frame models |
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290 | (4) |
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294 | (2) |
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10.6 Nonlinear pushover analyses |
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296 | (5) |
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10.6.1 Analysis procedure and seismic design checks |
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296 | (1) |
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10.6.2 Nonlinear pushover analysis results |
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297 | (2) |
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10.6.3 Performance-based observation |
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299 | (2) |
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10.7 Nonlinear dynamic analysis results |
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301 | (2) |
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10.8 Maximum inter-story drifts and residual inter-story drifts |
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303 | (3) |
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306 | (4) |
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10.10 Summary and conclusions |
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310 | (3) |
Appendix A: A detailed design example for CFT columns |
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313 | (16) |
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313 | (1) |
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313 | (16) |
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A.2.1 RCFT 16 x 16 x 500 column |
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313 | (5) |
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315 | (1) |
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316 | (1) |
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A.2.1.3 Point C (Mc = MB; Pc = 0.85fc'Ac) |
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317 | (1) |
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317 | (1) |
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317 | (1) |
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A.2.2 CCFT 18 x 500 column |
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318 | (3) |
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319 | (1) |
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320 | (1) |
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320 | (1) |
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321 | (1) |
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321 | (1) |
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A.2.3 RCFT 12 x 13 x 500 column |
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321 | (3) |
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322 | (1) |
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323 | (1) |
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A.2.3.3 Point C (Mc = MB; Pc = 0.85fc'Ac) |
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323 | (1) |
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324 | (1) |
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324 | (1) |
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A.2.4 CCFT 14 x 500 column |
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324 | (5) |
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325 | (1) |
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326 | (1) |
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327 | (1) |
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327 | (1) |
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327 | (2) |
Appendix B: Design examples and failure modes |
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329 | (30) |
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329 | (1) |
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329 | (10) |
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B.2.1 End-plate connection |
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329 | (6) |
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B.2.1.1 Check the basic information |
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329 | (2) |
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B.2.1.2 Calculate the design strength |
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331 | (1) |
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B.2.1.3 Determine the required bar diameter |
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331 | (1) |
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B.2.1.4 Determine the thickness of the end-plate |
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332 | (1) |
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B.2.1.5 Check the shear resistance |
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332 | (2) |
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B.2.1.6 Determine the size of the end-plate stiffener |
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334 | (1) |
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B.2.1.7 Check the rupture and bearing failure at the bars |
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335 | (1) |
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B.2.1.8 Check the steel column strength |
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335 | (1) |
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335 | (4) |
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B.2.2.1 Determine the required design strength |
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335 | (1) |
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B.2.2.2 Select the diameter of tension bars |
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336 | (1) |
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B.2.2.3 Layout the shear bolts and tension bars |
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336 | (1) |
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B.2.2.4 Determine the thickness of the T-stem |
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337 | (1) |
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B.2.2.5 Determine the bf and tf for the T-stub flange |
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338 | (1) |
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B.2.2.6 Check the T-stub section and failure modes |
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339 | (1) |
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B.2.2.7 Determine the shear connection |
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339 | (1) |
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339 | (20) |
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B.3.1 End-plate connection with RCFT columns |
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340 | (5) |
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341 | (1) |
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B.3.1.2 Determine the design strength |
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341 | (1) |
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B.3.1.3 Ductile failure modes |
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342 | (1) |
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B.3.1.4 Mixed failure modes |
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342 | (1) |
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B.3.1.5 Brittle (fracture) failure modes |
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343 | (2) |
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B.3.2 End-plate connection with CCFT columns |
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345 | (5) |
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345 | (1) |
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B.3.2.2 Determine the design strength |
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346 | (1) |
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B.3.2.3 Ductile failure modes |
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346 | (1) |
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B.3.2.4 Mixed failure modes |
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347 | (1) |
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B.3.2.5 Brittle (fracture) failure modes |
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348 | (2) |
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B.3.3 T-stub connection with RCFT columns |
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350 | (6) |
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350 | (1) |
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B.3.3.2 Determine the design strength |
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351 | (1) |
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B.3.3.3 Ductile failure modes |
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351 | (1) |
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B.3.3.4 Mixed failure modes |
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352 | (2) |
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B.3.3.5 Brittle (fracture) failure modes |
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354 | (2) |
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B.3.4 T-stub connection with CCFT columns |
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356 | (4) |
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B.3.4.1 Mixed failure modes |
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356 | (3) |
Appendix C: Detail design examples for panel zones |
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359 | (16) |
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359 | (1) |
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360 | (15) |
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C.2.1 End plate connection with RCFT |
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360 | (4) |
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C.2.1.1 Check the basic information |
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361 | (1) |
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C.2.1.2 Calculation procedures |
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361 | (2) |
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C.2.1.3 Panel zone strength |
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363 | (1) |
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C.2.2 End plate connection with CCFT |
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364 | (3) |
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C.2.2.1 Check the basic information |
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364 | (1) |
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C.2.2.2 Calculation procedures |
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364 | (3) |
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C.2.2.3 Panel zone strength |
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367 | (1) |
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C.2.3 T-stub connection with RCFT |
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367 | (3) |
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C.2.3.1 Check the basic information |
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367 | (1) |
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C.2.3.2 Calculation procedures |
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368 | (2) |
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C.2.3.3 Panel zone strength |
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370 | (1) |
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C.2.4 T-stub connection with CCFT |
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370 | (5) |
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C.2.4.1 Check the basic information |
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370 | (1) |
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C.2.4.2 Calculation procedures |
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371 | (2) |
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C.2.4.3 Panel zone strength |
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373 | (2) |
Appendix D: Earthquake ground motions |
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375 | (12) |
References |
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387 | (12) |
Index |
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399 | |