JGJT481-2019······1

1 總則······10

2 術語和符號······11

2.1 術語······11

2.2 符號······11

3 基本規(guī)定······13

4 屋蓋主要承重結構風荷載······15

4.1 一般規(guī)定······15

4.2 風荷載體型系數(shù)與脈動風效應等效風壓系數(shù)······15

4.3 結構風效應計算······16

5 屋蓋圍護結構風荷載······17

6 風洞試驗和計算流體動力學模擬······18

6.1 風洞試驗要求······18

6.2 計算流體動力學模擬要求······18

附錄A 典型屋蓋結構的體型系數(shù)······19

附錄B 典型屋蓋結構脈動風效應等效風壓系數(shù)······25

附錄C 脈動風效應等效靜風荷載計算方法······33

附錄D 典型屋蓋圍護結構的全風向風壓系數(shù)最值······35

附錄E 全風向風壓系數(shù)最值的確定方法······71

附錄F 圍護結構風荷載的風向折減系數(shù)······76

本標準用詞說明······78

引用標準名錄······79

附：條文說明······80

1 總則······83

2 術語和符號······85

2.1 術語······85

3 基本規(guī)定······87

4 屋蓋主要承重結構風荷載······91

4.1 一般規(guī)定······91

4.2 風荷載體型系數(shù)與脈動風效應等效風壓系數(shù)······92

4.3 結構風效應計算······94

5 屋蓋圍護結構風荷載······96

6 風洞試驗和計算流體動力學模擬······101

6.1 風洞試驗要求······101

6.2 計算流體動力學模擬要求······102

附錄A 典型屋蓋結構的體型系數(shù)······103

附錄B 典型屋蓋結構脈動風效應等效風壓系數(shù)······105

附錄C 脈動風效應等效靜風荷載計算方法······110

附錄D 典型屋蓋圍護結構的全風向風壓系數(shù)最值······114

附錄E 全風向風壓系數(shù)最值的確定方法······118

附錄F 圍護結構風荷載的風向折減系數(shù)······121