GB50205-2020······1
1 总则······16
2 术语和符号······17
2.1 术语······17
2.2 符号······18
3 基本规定······20
4 原材料及成品验收······22
4.1 一般规定······22
4.2 钢板······22
4.3 型材、管材······23
4.4 铸钢件······24
4.5 拉索、拉杆、锚具······25
4.6 焊接材料······26
4.7 连接用紧固标准件······27
4.8 球节点材料······29
4.9 压型金属板······29
4.10 膜结构用膜材······31
4.11 涂装材料······31
4.12 成品及其他······32
5 焊接工程······33
5.1 一般规定······33
5.2 钢构件焊接工程······33
5.3 栓钉（焊钉）焊接工程······39
6 紧固件连接工程······41
6.1 一般规定······41
6.2 普通紧固件连接······41
6.3 高强度螺栓连接······42
7 钢零件及钢部件加工······44
7.1 一般规定······44
7.2 切割······44
7.3 矫正和成型······45
7.4 边缘加工······51
7.5 球节点加工······52
7.6 铸钢件加工······55
7.7 制孔······57
8 钢构件组装工程······59
8.1 一般规定······59
8.2 部件拼接与对接······59
8.3 组装······60
8.4 端部铣平及顶紧接触面······63
8.5 钢构件外形尺寸······64
9 钢构件预拼装工程······73
9.1 一般规定······73
9.2 实体预拼装······73
9.3 仿真模拟预拼装······75
10 单层、多高层钢结构安装工程······76
10.1 一般规定······76
10.2 基础和地脚螺栓（锚栓）······76
10.3 钢柱安装······79
10.4 钢屋（托）架、钢梁（桁架）安装······81
10.5 连接节点安装······85
10.6 钢板剪力墙安装······86
10.7 支撑、檩条、墙架、次结构安装······87
10.8 钢平台、钢梯安装······89
10.9 主体钢结构······90
11 空间结构安装工程······92
11.1 一般规定······92
11.2 支座和地脚螺栓（锚栓）安装······92
11.3 钢网架、网壳结构安装······94
11.4 钢管桁架结构······96
11.5 索杆制作······97
11.6 膜单元制作······99
11.7 索杆安装······100
11.8 膜结构安装······101
12 压型金属板工程······102
12.1 一般规定······102
12.2 压型金属板制作······102
12.3 压型金属板安装······104
12.4 固定支架安装······107
12.5 连接构造及节点······109
12.6 金属屋面系统······109
13 涂装工程······111
13.1 一般规定······111
13.2 防腐涂料涂装······111
13.3 连接部位涂装及涂层缺陷修补······113
13.4 防火涂料涂装······115
14 钢结构分部竣工验收······117
附录A 钢材复验检测项目与检测方法······119
附录B 紧固件连接工程检验项目······122
附录C 金属屋面系统抗风揭性能检测方法······127
附录D 防腐涂装工艺评定······132
附录E 厚涂型防火涂料涂层厚度测定方法······136
附录F 钢结构工程有关安全及功能的检验和见证检测项目······138
附录G 钢结构工程有关观感质量检查项目······140
附录H 钢结构分项工程检验批质量验收记录表······141
附录J 钢结构工程计量方法······163
本标准用词说明······165
引用标准名录······166
附：条文说明······168
1 总则······173
3 基本规定······174
4 原材料及成品验收······178
4.1 一般规定······178
4.2 钢板······178
4.3 型材、管材······179
4.4 铸钢件······179
4.5 拉索、拉杆、锚具······179
4.6 焊接材料······180
4.7 连接用紧固标准件······180
4.8 球节点材料······181
4.9 压型金属板······181
4.10 膜结构用膜材······181
4.11 涂装材料······182
4.12 成品及其他······182
5 焊接工程······183
5.1 一般规定······183
5.2 钢构件焊接工程······183
5.3 栓钉（焊钉）焊接工程······186
6 紧固件连接工程······187
6.2 普通紧固件连接······187
6.3 高强度螺栓连接······187
7 钢零件及钢部件加工······190
7.2 切割······190
7.3 矫正和成型······190
7.4 边缘加工······191
7.5 球节点加工······191
7.6 铸钢件加工······192
7.7 制孔······192
8 钢构件组装工程······194
8.2 部件拼接与对接······194
8.3 组装······194
8.5 钢构件外形尺寸······194
9 钢构件预拼装工程······195
9.1 一般规定······195
9.2 实体预拼装······195
10 单层、多高层钢结构安装工程······196
10.1 一般规定······196
10.2 基础和地脚螺拴（锚栓）······196
10.3 钢柱安装······197
10.5 连接节点安装······197
10.6 钢板剪力墙安装······198
10.7 支撑、檩条、墙架、次结构安装······198
10.8 钢平台、钢梯安装······198
10.9 主体钢结构······198
11 空间结构安装工程······199
11.2 支座和地脚螺拴（锚栓）安装······199
11.3 钢网架、网壳结构安装······199
11.4 钢管桁架结构······200
11.5 索杆制作······200
11.6 膜单元制作······200
11.7 索杆安装······201
12 压型金属板工程······202
12.2 压型金属板制作······202
12.3 压型金属板安装······202
12.4 固定支架安装······203
12.5 连接构造及节点······203
13 涂装工程······204
13.1 一般规定······204
13.2 防腐涂料涂装······204
13.3 连接部位涂装及涂层缺陷修补······204
13.4 防火涂料涂装······205
