| Preface |
|
ix | |
| Acknowledgments |
|
xi | |
| Authors |
|
xiii | |
|
|
|
1 | (12) |
|
|
|
1 | (3) |
|
1.2 Stainless steel grades |
|
|
4 | (2) |
|
1.2.1 Austenitic stainless steels |
|
|
4 | (1) |
|
1.2.2 Ferritic stainless steels |
|
|
4 | (1) |
|
1.2.3 Martensitic stainless steels |
|
|
5 | (1) |
|
1.2.4 Duplex stainless steels |
|
|
5 | (1) |
|
1.2.5 Precipitation hardening stainless steels |
|
|
6 | (1) |
|
1.3 Basic stress-strain behavior of stainless steels |
|
|
6 | (1) |
|
1.4 Characteristics of CFSST columns |
|
|
6 | (4) |
|
1.4.1 Concrete confinement in circular CFSST columns |
|
|
6 | (3) |
|
1.4.2 Local buckling of rectangular CFSST columns |
|
|
9 | (1) |
|
|
|
10 | (1) |
|
|
|
10 | (3) |
|
2 Nonlinear analysis of CFSST short columns |
|
|
13 | (48) |
|
|
|
13 | (2) |
|
2.2 Stress-strain relationships of carbon steels |
|
|
15 | (1) |
|
2.3 Stress-strain relationships of stainless steels |
|
|
16 | (8) |
|
2.3.1 Two-stage stress-strain model by Rasmussen |
|
|
16 | (2) |
|
2.3.2 Two-stage stress-strain model by Gardner and Nethercot |
|
|
18 | (1) |
|
2.3.3 Three-stage stress-strain models by Quacb et al. and Abdella el al. |
|
|
19 | (4) |
|
2.3.4 Stress-strain model by Tao and Rasmussen |
|
|
23 | (1) |
|
2.4 Stress-strain relationships of concrete |
|
|
24 | (5) |
|
2.4.1 Compressive concrete in circular CFSST columns |
|
|
24 | (3) |
|
2.4.2 Compressive concrete in-rectangular CFSST columns |
|
|
27 | (2) |
|
2.4.3 Concrete in tension |
|
|
29 | (1) |
|
2.5 Fiber element modeling |
|
|
29 | (7) |
|
2.5.1 Discretization of cross-sections |
|
|
29 | (1) |
|
|
|
29 | (2) |
|
2.5.3 Axial force and bending moments |
|
|
31 | (1) |
|
2.5.4 Initial local buckling of stainless steel tubes |
|
|
32 | (1) |
|
2.5.5 Post-local buckling of stainless steel tubes |
|
|
33 | (2) |
|
2.5.6 Modeling of progressive post-local buckling |
|
|
35 | (1) |
|
2.6 Numerical analysis procedures |
|
|
36 | (3) |
|
2.6.1 Axial load-strain analysis |
|
|
36 | (1) |
|
2.6.2 Moment-curvature analysis |
|
|
37 | (1) |
|
2.6.3 Axial load-moment interaction strength analysis |
|
|
38 | (1) |
|
2.6.4 Solution algorithms implementing the secant method |
|
|
38 | (1) |
|
|
|
39 | (6) |
|
2.7.1 Validation of effective ividth models |
|
|
39 | (2) |
|
2.7.2 Verification of the fiber element model |
|
|
41 | (1) |
|
2.7.3 Comparisons of stress-strain models for stainless steel |
|
|
41 | (3) |
|
2.7.4 Comparison of CFSTand CFSST columns |
|
|
44 | (1) |
|
2.8 Behavior of CFSST short columns |
|
|
45 | (7) |
|
2.8.1 Influences of depth-to-thickness ratio |
|
|
45 | (2) |
|
2.8.2 Influences of concrete strength |
|
|
47 | (1) |
|
2.8.3 Influences of stainless steel strength |
|
|
47 | (2) |
|
2.8.4 Influences of local buckling |
|
|
49 | (1) |
|
2.8.5 Influences of section shapes |
|
|
50 | (2) |
|
2.9 Design of CFSST short columns |
|
|
52 | (2) |
|
|
|
52 | (1) |
|
|
|
52 | (1) |
|
2.9.3 Design model by Patel et al. |
|
|
53 | (1) |
|
|
|
54 | (2) |
|
|
|
56 | (5) |
|
3 Nonlinear analysis of circular CFSST slender columns |
|
|
61 | (34) |
|
|
|
61 | (1) |
|
3.2 Modeling of cross-sections |
|
|
62 | (1) |
|
3.3 Modeling of load-deflection responses |
|
|
63 | (4) |
|
3.3.1 Mathematical formulation |
|
|
63 | (3) |
|
3.3.2 Computational procedure |
|
|
66 | (1) |
|
3.4 Generating axial load-moment strength envelopes |
|
|
67 | (2) |
|
3.4.1 Mathematical modeling |
|
|
67 | (1) |
|
3.4.2 Modeling procedure for strength envelopes |
|
|
68 | (1) |
|
3.5 Solution algorithms implementing Muller's method |
|
|
69 | (2) |
|
3.6 Accuracy of mathematical models |
|
|
71 | (3) |
|
3.6.1 Concentrically loaded columns |
|
|
71 | (1) |
|
3.6.2 Eccentrically loaded columns |
|
|
72 | (2) |
|
3.7 Behavior of circular slender CFSST beam-columns |
|
|
74 | (14) |
|
3.7.1 Effects of column slenderness ratio |
|
|
74 | (2) |
|
3.7.2 Effects of load eccentricity ratio |
|
|
76 | (2) |
|
3.7.3 Effects of diameter-to-thickness ratio |
|
|
78 | (1) |
|
3.7.4 Effects of stainless steel proof stress |
|
|
78 | (2) |
|
3.7.5 Effects of concrete compressive strength |
|
|
80 | (1) |
|
3.7.6 Effects of concrete confinement |
|
|
81 | (1) |
|
3.7.7 Load distribution in concrete and stainless steel tubes |
|
|
82 | (6) |
|
3.8 Design of circular slender CFSST columns |
|
|
88 | (2) |
|
|
|
90 | (1) |
|
|
|
91 | (4) |
|
4 Nonlinear analysis of rectangular CFSST slender columns |
|
|
95 | (30) |
|
|
|
95 | (1) |
|
4.2 Formulation of cross-sections under biaxial bending |
|
|
96 | (1) |
|
4.3 Simulating load-deflection responses for biaxial bending |
|
|
97 | (3) |
|
|
|
97 | (2) |
|
4.3.2 Computer simulation procedure |
|
|
99 | (1) |
|
4.4 Modeling strength envelopes for biaxial bending |
|
|
100 | (3) |
|
4.4.1 Theoretical formulation |
|
|
100 | (1) |
|
4.4.2 Numerical modeling procedure |
|
|
101 | (2) |
|
4.5 Solution algorithms for columns under biaxial bending |
|
|
103 | (1) |
|
4.6 Verification of theoretical models |
|
|
103 | (3) |
|
4.6.1 Columns under axial loading |
|
|
103 | (1) |
|
4.6.2 Beam-columns under axial load and biaxial bending |
|
|
104 | (2) |
|
4.7 Behavior of rectangular slender CFSST beam-columns |
|
|
106 | (13) |
|
4.7.1 Ultimate axial strengths |
|
|
107 | (1) |
|
4.7.2 Concrete contribution ratio |
|
|
108 | (1) |
|
4.7.3 Pure moment capacities |
|
|
109 | (2) |
|
4.7.4 Axial load-deflection responses |
|
|
111 | (3) |
|
|
|
114 | (1) |
|
4.7.6 Applied load angles |
|
|
115 | (1) |
|
4.7.7 Cross-sectional shapes |
|
|
116 | (2) |
|
4.7.8 Column strength curves |
|
|
118 | (1) |
|
4.8 Design of rectangular and square CFSST slender columns |
|
|
119 | (3) |
|
4.8.1 Ultimate pure moments of square columns |
|
|
119 | (1) |
|
4.8.2 Slender columns under axial compression |
|
|
120 | (2) |
|
|
|
122 | (1) |
|
|
|
123 | (2) |
| Notations |
|
125 | (6) |
| Index |
|
131 | |