布置金属阻尼器的框架剪力墙结构在罕遇地震作用下的弹塑性时程分析

Elastic-Plastic Time History Analysis of Frame Shear Wall Structures with Metal Dampers Under Rare Earthquake

利用SAP系列软件中目前最成熟的产品SAP2000建立有限元模型分析,得到罕遇地震作用下的弹塑性时程分析。以北京市某框架剪力墙结构的商业楼为案例,并根据抗震规范的要求,对在钢筋混凝土框架剪力墙结构上布置金属阻尼器后的结构进行减震性能研究。对该结构增设金属阻尼器后,其结构的层间位移角明显减小,金属阻尼器在其中发挥了良好的耗能能力,可保障主体结构在罕遇地震作用下的安全性。

By using SAP2000,the most mature product of SAP series software at present,the elastic-plastic time history analysis under rare earthquake action is obtained by establishing a finite element model.This paper takes a commercial building in Beijing as a case,which is a frame shear wall structure.According to the requirements of the seismic code,the seismic performance of the structure with metal dampers on the reinforced concrete frame shear wall structure is studied.After adding metal dampers to the structure,the inter story displacement angle of the structure is significantly reduced,and the metal dampers play a good role in energy dissipation,which can ensure the safety of the main structure under rare earthquakes.