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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。
Taking a high-rise building as an example, the elasto-plastic wind-induced response time-history analysis of the structure subjected to strong winds was carried out. Based on this, the feasibility of applying the static elastoplastic Pushover method to the wind-resistant design of structures was studied. Comparing the results of dynamic time history analysis, standard static analysis and Pushover wind analysis, it is found that under the condition of small wind load, the tall buildings are in elastic state and calculated by the static equivalent wind load method The structure of the wind vibration response to meet the needs of the actual project. Under the action of strong wind, some components of high-rise building structure enter into plastic deformation state. The calculated displacement response of the proposed Pushover wind analysis method is in good agreement with the time-history response analysis result, while the result of the standard static analysis method is small.