某高层建筑弹塑性分析

Elasto-plastic analysis of a high-rise building

以某29层框架-核心筒结构为分析对象,采用PKPM进行模态分析和多遇地震下的反应谱分析,同时采用SAUAGE进行罕遇地震下的弹塑性时程分析,评估结构的抗震性能。计算结果表明,分析对象设计偏不安全,动力响应及塑性损伤超出了规范建议的范围,抗震性能目标不满足要求,需重新设计。

A frame-core tube structure of 29 stories was taken as analysis object. Modal analysis and response spectrum analysis were conducted by software PKPM,while elasto-plastic time history analysis was conducted by software SAUAGE,for the purpose of evaluating the seismic performance of target structure. According to the calculation result,the structure is designed unsafely,dynamic response and plastic damage cannot be controlled in the range proposed by codes,seismic goals have exceeded and the structure needs to be modified.