JGJT481-2019······1

1 總則······10

2 術(shù)語和符號······11

2.1 術(shù)語······11

2.2 符號······11

3 基本規(guī)定······13

4 屋蓋主要承重結(jié)構(gòu)風(fēng)荷載······15

4.1 一般規(guī)定······15

4.2 風(fēng)荷載體型系數(shù)與脈動風(fēng)效應(yīng)等效風(fēng)壓系數(shù)······15

4.3 結(jié)構(gòu)風(fēng)效應(yīng)計算······16

5 屋蓋圍護(hù)結(jié)構(gòu)風(fēng)荷載······17

6 風(fēng)洞試驗和計算流體動力學(xué)模擬······18

6.1 風(fēng)洞試驗要求······18

6.2 計算流體動力學(xué)模擬要求······18

附錄A 典型屋蓋結(jié)構(gòu)的體型系數(shù)······19

附錄B 典型屋蓋結(jié)構(gòu)脈動風(fēng)效應(yīng)等效風(fēng)壓系數(shù)······25

附錄C 脈動風(fēng)效應(yīng)等效靜風(fēng)荷載計算方法······33

附錄D 典型屋蓋圍護(hù)結(jié)構(gòu)的全風(fēng)向風(fēng)壓系數(shù)最值······35

附錄E 全風(fēng)向風(fēng)壓系數(shù)最值的確定方法······71

附錄F 圍護(hù)結(jié)構(gòu)風(fēng)荷載的風(fēng)向折減系數(shù)······76

本標(biāo)準(zhǔn)用詞說明······78

引用標(biāo)準(zhǔn)名錄······79

附：條文說明······80

1 總則······83

2 術(shù)語和符號······85

2.1 術(shù)語······85

3 基本規(guī)定······87

4 屋蓋主要承重結(jié)構(gòu)風(fēng)荷載······91

4.1 一般規(guī)定······91

4.2 風(fēng)荷載體型系數(shù)與脈動風(fēng)效應(yīng)等效風(fēng)壓系數(shù)······92

4.3 結(jié)構(gòu)風(fēng)效應(yīng)計算······94

5 屋蓋圍護(hù)結(jié)構(gòu)風(fēng)荷載······96

6 風(fēng)洞試驗和計算流體動力學(xué)模擬······101

6.1 風(fēng)洞試驗要求······101

6.2 計算流體動力學(xué)模擬要求······102

附錄A 典型屋蓋結(jié)構(gòu)的體型系數(shù)······103

附錄B 典型屋蓋結(jié)構(gòu)脈動風(fēng)效應(yīng)等效風(fēng)壓系數(shù)······105

附錄C 脈動風(fēng)效應(yīng)等效靜風(fēng)荷載計算方法······110

附錄D 典型屋蓋圍護(hù)結(jié)構(gòu)的全風(fēng)向風(fēng)壓系數(shù)最值······114

附錄E 全風(fēng)向風(fēng)壓系數(shù)最值的確定方法······118

附錄F 圍護(hù)結(jié)構(gòu)風(fēng)荷載的風(fēng)向折減系數(shù)······121