粤港澳建筑围护结构风荷载计算对比分析  

Comparative analysis of wind load calculation of building envelope in Guangdong,Hong Kong and Macao

作　　者：肖丹玲 Xiao Danling(Guangdong Provincial Academy of Building Research Group Co.Ltd,Guangzhou 510500,China)

机构地区：[1]广东省建筑科学研究院集团股份有限公司,广东广州510500

出　　处：《建筑科学》2023年第11期105-114,共10页Building Science

摘　　要：粤港澳位于我国东南沿海地区,受风灾影响严重,三地风荷载规范不同,对其风荷载计算方法的差异进行对比分析具有重要意义。本文详细对比了三地风荷载中围护结构风荷载计算参数取值与计算方法,并通过两个典型实例进行对比分析。结果表明:粤港澳三地风荷载计算考虑因素大体相同,但公式具有差异;国家规范的阵风系数、高度变化系数与基本风压综合考虑与香港规范、澳门规范提供的参考风压具有可比性;广东规范的面积折减系数取值最佳;内压系数的取值香港规定较为全面,粤澳则较为简单;算例结果显示,对于屋盖风压,澳门规范计算结果较大,广东规范与香港规范结果更为接近,对于墙面风压,计算结果从大到小均是澳门规范、广东规范、香港规范。本文可为粤港澳地区项目围护结构风荷载计算及标准协同提供参考。Guangdong,Hong Kong and Macao are located in the southeast coastal area,and are seriously affected by wind disasters.The wind load codes of the three places are different.It is of great significance to compare and analyze the differences in wind load calculation methods.In this paper,the parameter value and calculation method of the wind load of the enclosure structure in the three places wind load are introduced,and the comparative analysis through two typical examples is conducted.The results show that:The wind load calculation factors of Guangdong,Hong Kong and Macao are basically the same,but the formulas are different;The gust coefficient,height variation coefficient and basic wind pressure in the national specifications are considered comprehensively and are comparable with the reference wind pressure provided by the Hong Kong specifications and Macao specifications;The area reduction coefficient of Guangdong standard is the best;The value of internal pressure coefficient is relatively comprehensive in Hong Kong,but relatively simple in Guangdong and Macao;The results of the example show that for the wind pressure of the roof,the calculation results of Macao code are larger,and the results of Guangdong code and Hong Kong code are closer.For the wind pressure of the wall,the calculation results are Macao code,Guangdong code,Hong Kong code from large to small.This paper can be used as a reference for wind load calculation of enclosure structure and wind load standard coordination in Guangdong,Hong Kong and Macao.

关 键 词：粤港澳荷载规范 规范对比 结构风荷载 围护结构 

分 类 号：TU312[建筑科学—结构工程]