建筑结构极值风压估算方法研究  

Study on the estimation method for the extreme wind pressure on buildings

作　　者：陈凯[1] 孙海角 何连华[1] 符龙彪[1] 武林[1] 

机构地区：[1]中国建筑科学研究院风工程研究中心,北京100013 [2]华润(大连)有限公司,大连116001

出　　处：《建筑结构》2012年第7期123-127,共5页Building Structure

基　　金：国家自然科学基金面上项目(50878202)

摘　　要：结合某高层建筑表面风压的试验测量,分别用峰值因子法和概率分析方法计算了建筑表面风压极值,对两种方法获得的结果进行了详细对比分析。证实对大多数区域而言,这两种方法可以获得大体相当的结果,但在局部区域存在较大差异,而这些区域恰恰是应当引起关注的风压较高的区域。通过分析差异产生的原因,总结出对于负压区域,由于各种流动现象造成压力脉动远远偏离高斯分布,使得峰值因子法失效,而本文给出的概率分析方法与概率分布形式无关,简便易行。The extreme wind pressures acting on a high-rise building were obtained through peak factor method and probability distribution analysis.The comparison was carried out subsequently and it was concluded that the results were approximately equal except in some local regions.However,the wind pressure was relatively high in those local regions which should be focused on.The reason leading to the difference was that the pressure fluctuation in the flow separation region was significantly different from the Gaussian distribution and consequently invalidated the peak factor method.However,the probability distribution analysis used in the present work was independent of the probability distribution and easy to follow.

关 键 词：极值风压 围护结构 峰值因子 高斯分布 

分 类 号：TU312[建筑科学—结构工程]