摘要
重点对结构等效静力风荷载背景分量的确定方法进行了系统分析。并结合风洞试验,分别采用阵风荷载因子法、风压轮廓面法和荷载响应相关系数法,分析一鞍形索网屋盖结构不同风向角、不同极值响应对应的等效静力风荷载背景分量,并与风洞试验方法确定的极值响应对应的瞬态脉动风压进行对比,结果表明荷载响应相关系数法在确定该类结构等效静力风荷载背景分量有很好的适用性,而其它几种方法计算偏差较大,这为大跨度屋盖结构等效静力风荷载的研究奠定了一定的基础。
The methods to obtain the background component of structural equivalent static wind loads systemically are discussed. According to wind tunnel tests for several wind directions of a saddle-shaped cable-net structure, load-response-correlation method, gust load envelope method and gust loading factor method are employed to analyze the background component of equivalent static wind loads for different structural responses. The results are compared with the actual instantaneous wind pressure distributions causing maximum structural responses from wind tunnel tests. It is found that load-response-correlation method yields results agreeing well with wind tunnel test results.
出处
《工程力学》
EI
CSCD
北大核心
2006年第11期21-27,共7页
Engineering Mechanics
基金
国家自然科学基金重点项目(50338010)
关键词
鞍形索网
等效静力风荷载
背景分量
阵风荷载因子法
荷载响应相关系数法
saddle-shaped cable-net structures
equivalent static wind loads
background component
gust loading factor
load-response-correlation method
