某消能减震钢筋混凝土框架-剪力墙结构弹塑性时程分析

Nonlinear time-history analysis for an energy-dissipation reinforced concrete frame-shear-wall structure

采用新近开发的合理的结构数值分析模型,建立了某实际高层钢筋混凝土框架-剪力墙结构的有限元分析模型。在此基础上对原结构和布置了非线性粘滞流体阻尼器的减震结构均进行了罕遇地震作用下的弹塑性时程分析。利用数值分析模型的非线性计算能力和有限元分析软件的后处理功能,获得了最大层间位移分布、基底剪力时程和损伤分布与发展等多项结构地震响应结果。通过对比分析原结构和减震结构的相关结果,表明采用非线性粘滞流体阻尼器这一减震方案可以有效降低结构地震响应,提高结构的整体抗震性能,具有良好的减震效果。

A practical high-rise reinforced concrete flame-shear-wall structure using nonlinear viscous dampers was modeled with some newly-developed numerical analysis tools. Then, seismic responses of both the uncontrolled structure and the controlled structure using nonlinear viscous fluid dampers under rare earthquakes were analyzed with the nonlinear time-history analysis method based on the established numerical structural models. The structural responses of storey drift, base shear and structural damage distribution and development were obtained due to the excellent calculation ability of the numerical models and the post-processing function of finite element analysis software. These analysis results of both the uncontrolled structure and the controlled one were compared. And it was shown that the seismic responses of the controlled structure can be reduced and its a seismic performance can be improved obviously because nonlinear viscous dampers can effectively dissipate the input energy of earthquake.