平面不规则长形高层建筑结构扭转效应的研究

摘要

With the help of SAP2000 software,the torsional effect of planar,irregular,rectangular highrise buildings has been analyzed. The modal analysis is used to get the self-vibration characteristics of the building. In order to evaluate the structural seismic behavior, the elastic time-history method is used. The distribution curves are obtained along the horijontal displacement of the building caused by seismic actions.The displacement ratio and the period ratio are analyzed. Results show that this method is effective and reasonable. Appropriate measures are to be taken for the practical work.%运用SAP2000有限元分析软件分析平面不规则长形高层建筑结构扭转效应,进行模态分析得到该建筑物的自振特性,同时采用弹性时程法进行地震分析,得到结构在多条地震波作用下的水平位移沿楼高的分布曲线,分析高层建筑结构设计中因建筑平面不规则引起位移比、周期比.计算结构分析表明,利用SAP2000建立三维有限元模型进行地震反应分析是合理有效的.并提出一些避免平面不规则长形高层建筑扭转效应的解决措施,对实际工作有一定的参考价值.