作　　者： ; ;

机构地区： 华南理工大学土木与交通学院土木工程系

出　　处： 《工业建筑》 2009年第8期41-45,12,共6页

摘　　要： 以某高层建筑结构为例,进行了强风作用下结构的弹塑性风振响应时程分析,在此基础上,进行了将静力弹塑性Pushover方法用于结构抗风设计的可行性研究。通过动力时程分析、规范静力分析及Pushover抗风分析结果的对比发现:在风荷载较小的情况下,高层建筑结构处于弹性状态,由规范给出的静力等效风荷载方法计算得到的结构风振响应可以满足实际工程的需要。在强风作用下,高层建筑结构的部分构件进入塑性变形状态,用所提出的Pushover抗风分析方法计算得到的结构位移响应与时程响应分析结果吻合,而规范静力分析方法的结果偏小。 Based on the time-history analysis of the elastic-plastic wind-induced response for a tall building structure under the strong breeze, the feasibility of the application of Pushover method to the wind resistance design of the structure is investigated. Through a series of comparative analyses for computational results of different methods, it is found that the tall building structures under the weak wind load are generally in the elastic state. The structural responses obtained by using the static-equivalent wind-load method in the code may meet the needs of practical projects. But under the strong breeze, some moments of the tall building structure would enter the plastic deformation state, the displacement responses provided by the Pushover method are in good agreement with the results of the time-history analysis, and the results of the static-equivalent wind-load method is unsafety.

关 键 词： 高层建筑结构 抗风分析 时程响应 方法

领　　域： [建筑科学] [建筑科学]