顺风向等效风荷载及响应
    ——主要国家建筑风荷载规范比较

洪小健　顾  明　（同济大学土木工程防灾国家重点实验室  上海　200092）

[提要]  详细地比较了中、美、欧、日、加、澳等国风荷载规范中顺风向响应的计算内容。通过对基本风压、平均风速剖面、湍流强度剖面、脉动风速谱、相关函数等多个方面的详细分析比较，指出中国规范在湍流强度、响应峰值系数的选取、相关函数的选用等方面可能存在的问题，并用各国风荷载规范完整地计算比较了一幢高层建筑结构的顺风向等效设计风荷载和顺风向风振响应。
[关键词]  规范  风荷载  风振响应  湍流度  相关函数  峰值系数

This paper presents the detailed comparison on the guidelines and procedures about computing along-wind response of tall  buildings  in  GB50009-2001, ACSE7-98, Eurocode  1995, RLB-AIJ1996, NBC1995, SAA  Loading  Code 2000. With the minute comparisons on basic wind pressure, mean velocity profile, turbulence intensity profile, wind spectrum, correlation structure,it seems that there are several points that must be paid attention to,such as turbulence intensity,response peak factor, correlation structure in C,hinese code. The equivalent static pressure and response for a tall building are presented to illustrate the overall comparison among various codes.
Keywords: code; wind load; wind induced vibration response; turbulence intensity; coherence structure; peak factor

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