JGJ/T481-2019：屋盖结构风荷载标准

JGJT481-2019······1

1 总则······10

2 术语和符号······11

2.1 术语······11

2.2 符号······11

3 基本规定······13

4 屋盖主要承重结构风荷载······15

4.1 一般规定······15

4.2 风荷载体型系数与脉动风效应等效风压系数······15

4.3 结构风效应计算······16

5 屋盖围护结构风荷载······17

6 风洞试验和计算流体动力学模拟······18

6.1 风洞试验要求······18

6.2 计算流体动力学模拟要求······18

附录A 典型屋盖结构的体型系数······19

附录B 典型屋盖结构脉动风效应等效风压系数······25

附录C 脉动风效应等效静风荷载计算方法······33

附录D 典型屋盖围护结构的全风向风压系数最值······35

附录E 全风向风压系数最值的确定方法······71

附录F 围护结构风荷载的风向折减系数······76

本标准用词说明······78

引用标准名录······79

附：条文说明······80

1 总则······83

2 术语和符号······85

2.1 术语······85

3 基本规定······87

4 屋盖主要承重结构风荷载······91

4.1 一般规定······91

4.2 风荷载体型系数与脉动风效应等效风压系数······92

4.3 结构风效应计算······94

5 屋盖围护结构风荷载······96

6 风洞试验和计算流体动力学模拟······101

6.1 风洞试验要求······101

6.2 计算流体动力学模拟要求······102

附录A 典型屋盖结构的体型系数······103

附录B 典型屋盖结构脉动风效应等效风压系数······105

附录C 脉动风效应等效静风荷载计算方法······110

附录D 典型屋盖围护结构的全风向风压系数最值······114

附录E 全风向风压系数最值的确定方法······118

附录F 围护结构风荷载的风向折减系数······121