轻质砌块填充墙对钢框架地震反应影响分析

Analysis of influences of lightweight infilled walls on seismic responses of steel frames

本文根据现有的填充墙钢框架结构试验和理论研究成果,提出了一种适用于结构整体分析的框架填充墙有限元模型。采用杆系模型并编制了相应的弹塑性地震反应分析程序。通过对空框架和带填充墙钢框架的地震反应分析,研究了轻质砌块填充墙的存在对钢框架顶层位移反应、底层柱弯矩及柱轴力反应的影响,得出了有益的结论。为进一步完善钢结构抗震设计提供了理论基础。

Based on the available research findings about the steel frames with infilled walls, the infinite element model of intilled wall is developed in this paper. The member system modeling is adopted and the corresponding program for analyzing the elasto-plastic seismic responses of frames is worked out by the authors. Through a comparison of the earthquake responses of bare frames with that of the frames with infilled wall, the influences of infilled walls on the top floor displacement, bottom column moment and column thrust force of steel frames under earthquakes are explored. And some conclusions are drawn. The studies of this paper provide the theoretical basis for the further improvement of seismic design of steel frames.