目录

目次

1 总则..... 1
2 术语和符号..... 2
2.1 术语..... 2
2.2 符号..... 5
3 基本设计规定..... 10
3.1 一般规定..... 10
3.2 结构体系..... 12
3.3 作用..... 12
3.4 结构或构件变形及舒适度的规定..... 14
3.5 截面板件宽厚比等级..... 14
4 材料..... 16
4.1 钢材牌号及标准..... 16
4.2 连接材料型号及标准..... 16
4.3 材料选用..... 17
4.4 设计指标和设计参数..... 19
5 结构分析与稳定性设计..... 24
5.1 一般规定..... 24
5.2 初始缺陷..... 25
5.3 一阶弹性分析与设计..... 27
5.4 二阶弹性 $ P-\Delta $ 分析与设计..... 28
5.5 直接分析设计法..... 28
6 受弯构件..... 31
6.1 受弯构件的强度..... 31
6.2 受弯构件的整体稳定..... 33
6.3 局部稳定..... 35
6.4 焊接截面梁腹板考虑屈曲后强度的计算..... 42
6.5 腹板开孔要求..... 45

6.6 梁的构造要求.....46

7 轴心受力构件.....48

7.1 截面强度计算.....48

7.2 轴心受压构件的稳定性计算.....49

7.3 实腹式轴心受压构件的局部稳定和屈曲后强度.....59

7.4 轴心受力构件的计算长度和容许长细比.....62

7.5 轴心受压构件的支撑.....66

7.6 单边连接的单角钢.....68

8 拉弯、压弯构件.....71

8.1 截面强度计算.....71

8.2 构件的稳定性计算.....72

8.3 框架柱的计算长度.....77

8.4 压弯构件的局部稳定和屈曲后强度.....82

8.5 承受次弯矩的桁架杆件.....84

9 加劲钢板剪力墙.....86

9.1 一般规定.....86

9.2 加劲钢板剪力墙的计算.....86

9.3 构造要求.....88

10 塑性及弯矩调幅设计.....90

10.1 一般规定.....90

10.2 弯矩调幅设计要点.....90

10.3 构件的计算.....91

10.4 容许长细比和构造要求.....92

11 连接.....94

11.1 一般规定.....94

11.2 焊接连接计算.....95

11.3 焊接连接构造要求.....99

11.4 紧固件连接计算.....102

11.5 紧固件连接构造要求.....106

11.6 销轴连接.....107

11.7 钢管法兰连接构造.....110
12 节点.....111
12.1 一般规定.....111
12.2 连接板节点.....111
12.3 梁柱连接节点.....114
12.4 铸钢节点.....118
12.5 预应力索节点.....119
12.6 支座.....119
12.7 柱脚.....121
13 钢管连接节点.....125
13.1 一般规定.....125
13.2 构造要求.....125
13.3 圆钢管直接焊接节点和局部加劲节点的计算.....129
13.4 矩形钢管直接焊接节点和局部加劲节点的计算.....144
14 钢与混凝土组合梁.....153
14.1 一般规定.....153
14.2 组合梁设计.....155
14.3 抗剪连接件的计算.....158
14.4 挠度计算.....160
14.5 负弯矩区裂缝宽度计算.....161
14.6 纵向抗剪计算.....162
14.7 构造要求.....163
15 钢管混凝土柱及节点.....165
15.1 一般规定.....165
15.2 矩形钢管混凝土柱.....165
15.3 圆形钢管混凝土柱.....165
15.4 钢管混凝土柱与钢梁连接节点.....166
16 疲劳计算及防脆断设计.....167
16.1 一般规定.....167
16.2 疲劳计算.....167

16.3 构造要求..... 172
16.4 防脆断设计..... 175
17 钢结构抗震性能化设计..... 176
17.1 一般规定..... 176
17.2 计算要点..... 178
17.3 基本抗震措施..... 188
18 钢结构防护..... 195
18.1 抗火设计..... 195
18.2 防腐蚀设计..... 195
18.3 隔热..... 196
附录 A 常用建筑结构体系..... 198
附录 B 结构或构件的变形容许值..... 200
附录 C 梁的整体稳定系数..... 204
附录 D 轴心受压构件的稳定系数..... 209
附录 E 柱的计算长度系数..... 214
附录 F 加劲钢板剪力墙的弹性屈曲临界应力..... 223
附录 G 桁架节点板在斜腹杆压力作用下的稳定计算..... 231
附录 H 无加劲钢管直接焊接节点刚度判别..... 233
附录 J 钢与混凝土组合梁的疲劳验算..... 235
附录 K 疲劳计算的构件和连接分类..... 236
本标准用词说明..... 242
引用标准名录..... 243
附：条文说明..... 24340

CONTENTS

1 General Provisions ..... 1
2 Terms and Symbols ..... 2
2.1 Terms ..... 2
2.2 Symbols ..... 5
3 General Requirements ..... 10
3.1 General Requirements ..... 10
3.2 Structural Systems ..... 12
3.3 Actions ..... 12
3.4 Requirements of Deformation for Structures and Members ..... 14
3.5 Classification of Sections ..... 14
4 Material ..... 16
4.1 Structural Steel Designations and Standards ..... 16
4.2 Connections and Fasteners Materials and Standards ..... 16
4.3 Selection of Materials ..... 17
4.4 Design Strength and Parameters ..... 19
5 Structural Analysis and Stability Design ..... 24
5.1 General Requirements ..... 24
5.2 Initial Imperfections ..... 25
5.3 First-order Elastic Analysis and Design ..... 27
5.4 Second-order Elastic Analysis and Design ..... 28
5.5 Direct Analysis Method of Design ..... 28
6 Flexural Members ..... 31
6.1 Shear and Flexural Strength ..... 31
6.2 Flexural-torsional Stability of Beams ..... 33
6.3 Plate Stability ..... 35
6.4 Design of Beams Considering Post-buckling Strength of Webs ..... 42

6.5 Strengthening of Openings.....44
6.6 Detailings.....46
7 AxiallyLoaded Members.....47
7.1 Strength Calculation of Cross-sections.....47
7.2 Stability Calculation of Members under Axial Compression.....48
7.3 Local Stability and Post-buckling Strength of Solid Web Members under Axial Compression.....58
7.4 Effective Length and Allowable Slenderness Ratio of Members under Axial Compression.....60
7.5 Bracing of Members under Axial Compression.....64
7.6 Special Cases of Trusses and Tower Members.....66
8 Members under Combined Axial Force and Bending.....69
8.1 Strength Calculation of Cross-sections.....69
8.2 Stability Calculation of Members.....70
8.3 Effective Length of Frame Columns.....75
8.4 Local Stability and Post-buckling Strength of Beam-columns.....80
8.5 Truss Members Subjected to Second-order Moments.....82
9 Stiffened Steel Shear Walls.....83
9.1 General Requirements.....83
9.2 Design of Stiffened Steel Shear Walls.....83
9.3 Detailings.....85
10 Plastic Design and Provisions for Design using Moment Redistribution.....86
10.1 General Requirements.....86
10.2 Provisions for Design using Moment Redistribution.....86
10.3 Calculation of Member Strength and Stability.....87
10.4 Slenderness Limitations and Detailings.....88
11 Connections.....90
11.1 General Requirements.....90
11.2 Calculation of Welded Connections.....91
11.3 Detailing Requirements of Welded Connections.....95

11.4 Calculation of Fasteners ..... 98
11.5 Detailing Requirements of Fasteners ..... 102
11.6 Pin Connections ..... 103
11.7 Details of Flanged Connections for Steel Tubes ..... 106
12 Joints ..... 107
12.1 General Requirements ..... 107
12.2 Connecting Plate Joints ..... 107
12.3 Beam-Column Joints ..... 110
12.4 Cast Steel Joints ..... 114
12.5 Pre-stressed Cable Joints ..... 115
12.6 Bearings ..... 115
12.7 Column Footing ..... 117
13 Steel Tubular Joints ..... 121
13.1 General Requirements ..... 121
13.2 Detail Requirements ..... 121
13.3 Design of Unstiffened and Stiffened CHS Joints ..... 125
13.4 Design of Unstiffened and Stiffened RHS Joints ..... 139
14 Composite Steel and Concrete beams ..... 148
14.1 General Requirements ..... 148
14.2 Design of Composite Beams ..... 150
14.3 Calculation of Shear Connections ..... 153
14.4 Calculation of Deflection ..... 155
14.5 Calculation of Concrete Crack Width at Hogging Moment Region ..... 156
14.6 Calculation of Longitudinal Shear ..... 157
14.7 Detailing Provisions ..... 158
15 Concrete-filled Steel Tubular Column and Joints ..... 160
15.1 General Requirements ..... 160
15.2 Rectangular Concrete-filled Steel Tubular Members ..... 160
15.3 Circular Concrete-filled Steel Tubular Members ..... 160
15.4 Beam-column Joints ..... 161

6 Design for Fatigue and Brittle fracture ..... 162
16.1 General Requirements ..... 162
16.2 Design for Fatigue ..... 162
16.3 Detailing Requirements ..... 167
16.4 Prevention of Brittle Fracture ..... 170
17 Seismic Design of Steel Structural Members ..... 171
17.1 General Requirements ..... 171
17.2 Design Requirements ..... 173
17.3 Connections and Details ..... 183
18 Protection of Steel Structures ..... 190
18.1 Fire-Resistant Design ..... 190
18.2 Corrosion Prevention Design ..... 190
18.3 Temperature Insulation ..... 191
Appendix A Common Structural Systems ..... 193
Appendix B Limits of Deflection for Structures and Flexural Members ..... 195
Appendix C Overall Stability of Beams ..... 199
Appendix D Stability Coefficients of Members under Axial Compression ..... 204
Appendix E Effective Length Factors of Columns ..... 209
Appendix F Elastic Buckling Stresses for Stiffened Steel Shear Walls ..... 218
Appendix G Buckling Calculation of Truss Connecting Plate under Diagonal Compression ..... 226
Appendix H Classifications of Unstiffened Tubular Joints in terms of Rigidity ..... 228
Appendix J Fatigue Design of Composite Steel and Concrete Beams ..... 230
Appendix K Design Values for Compressive and Shear Strength of Composite Circular ..... 231
Concrete-filled Steel Tubes ..... 231
Explanation of wording in this standard ..... 237
List of Quoted Standards ..... 238
Addition: Explanation of Provisions ..... 24340