GB/T5146-2021······1

1 總則······12

2 術(shù)語(yǔ)和符號(hào)······13

2.1 術(shù)語(yǔ)······13

2.2 符號(hào)······14

3 基本規(guī)定······18

3.1 一般規(guī)定······18

3.2 作用與作用組合······19

3.3 構(gòu)造規(guī)定······19

4 材料······21

4.1 鋼材······21

4.2 混凝土······21

4.3 連接材料······22

4.4 防護(hù)材料······23

5 結(jié)構(gòu)分析······24

5.1 一般規(guī)定······24

5.2 計(jì)算指標(biāo)······25

5.3 分析方法······28

6 鋼管混凝土桁式混合結(jié)構(gòu)承載力計(jì)算······29

6.1 一般規(guī)定······29

6.2 受壓、受拉、受彎承載力計(jì)算······29

6.3 受剪承載力計(jì)算······48

7 鋼管混凝土加勁混合結(jié)構(gòu)承載力計(jì)算······49

7.1 一般規(guī)定······49

7.2 單肢結(jié)構(gòu)正截面承載力計(jì)算······50

7.3 四肢結(jié)構(gòu)正截面承載力計(jì)算······57

7.4 六肢結(jié)構(gòu)正截面承載力計(jì)算······66

7.5 長(zhǎng)細(xì)比影響下正截面承載力計(jì)算······71

7.6 長(zhǎng)期荷載作用下正截面承載力計(jì)算······73

7.7 斜截面受剪承載力計(jì)算······74

7.8 拱形結(jié)構(gòu)承載力計(jì)算······75

8 節(jié)點(diǎn)設(shè)計(jì)······76

8.1 一般規(guī)定······76

8.2 鋼管混凝土桁式混合結(jié)構(gòu)節(jié)點(diǎn)······78

8.3 鋼管混凝土加勁混合結(jié)構(gòu)柱-梁連接節(jié)點(diǎn)······82

8.4 基礎(chǔ)與支承節(jié)點(diǎn)構(gòu)造······85

8.5 節(jié)點(diǎn)抗疲勞設(shè)計(jì)······89

9 防護(hù)設(shè)計(jì)······92

9.1 一般規(guī)定······92

9.2 防腐設(shè)計(jì)······93

9.3 防火設(shè)計(jì)······94

9.4 防撞擊設(shè)計(jì)······96

10 施工和驗(yàn)收······100

10.1 一般規(guī)定······100

10.2 制作與安裝······100

10.3 鋼管內(nèi)混凝土施工······102

10.4 鋼管外混凝土施工······105

10.5 檢測(cè)與驗(yàn)收······107

附錄A 鋼管混凝土混合結(jié)構(gòu)的材料本構(gòu)模型······109

附錄B 軸心受壓鋼管混凝土構(gòu)件的穩(wěn)定系數(shù)······117

附錄C 鋼管混凝土加勁混合結(jié)構(gòu)的長(zhǎng)期荷載影響系數(shù)······125

附錄D 相貫焊接節(jié)點(diǎn)的熱點(diǎn)應(yīng)力集中系數(shù)······130

附錄E 單肢鋼管混凝土加勁混合結(jié)構(gòu)的耐火極限······135

本標(biāo)準(zhǔn)用詞說(shuō)明······137

引用標(biāo)準(zhǔn)名錄······138

附：條文說(shuō)明······141

1 總則······145

2 術(shù)語(yǔ)和符號(hào)······146

2.1 術(shù)語(yǔ)······146

3 基本規(guī)定······150

3.1 一般規(guī)定······150

3.2 作用與作用組合······151

3.3 構(gòu)造規(guī)定······151

4 材料······154

4.1 鋼材······154

4.2 混凝土······154

5 結(jié)構(gòu)分析······156

5.1 一般規(guī)定······156

5.2 計(jì)算指標(biāo)······157

6 鋼管混凝土桁式混合結(jié)構(gòu)承載力計(jì)算······159

6.1 一般規(guī)定······159

6.2 受壓、受拉、受彎承載力計(jì)算······160

6.3 受剪承載力計(jì)算······162

7 鋼管混凝土加勁混合結(jié)構(gòu)承載力計(jì)算······164

7.1 一般規(guī)定······164

7.2 單肢結(jié)構(gòu)正截面承載力計(jì)算······164

7.3 四肢結(jié)構(gòu)正截面承載力計(jì)算······166

7.4 六肢結(jié)構(gòu)正截面承載力計(jì)算······166

7.5 長(zhǎng)細(xì)比影響下正截面承載力計(jì)算······167

7.6 長(zhǎng)期荷載作用下正截面承載力計(jì)算······167

7.7 斜截面受剪承載力計(jì)算······167

7.8 拱形結(jié)構(gòu)承載力計(jì)算······168

8 節(jié)點(diǎn)設(shè)計(jì)······169

8.1 一般規(guī)定······169

8.2 鋼管混凝土析式混合結(jié)構(gòu)節(jié)點(diǎn)······170

8.3 鋼管混凝土加勁混合結(jié)構(gòu)柱-梁連接節(jié)點(diǎn)······173

8.4 基礎(chǔ)與支承節(jié)點(diǎn)構(gòu)造······173

8.5 節(jié)點(diǎn)抗疲勞設(shè)計(jì)······174

9 防護(hù)設(shè)計(jì)······177

9.1 一般規(guī)定······177

9.2 防腐設(shè)計(jì)······177

9.3 防火設(shè)計(jì)······177

9.4 防撞擊設(shè)計(jì)······183

10 施工和驗(yàn)收······184

10.1 一般規(guī)定······184

10.2 制作與安裝······184

10.3 鋼管內(nèi)混凝土施工······184

10.4 鋼管外混凝土施工······188

10.5 檢測(cè)與驗(yàn)收······188

附錄A 鋼管混凝土混合結(jié)構(gòu)的材料本構(gòu)模型······190