建筑结构学报2017，Vol.38Issue(10)：38-50,13.DOI:10.14006/j.jzjgxb.2017.10.005
两种密肋框格屈曲约束低屈服点钢板剪力墙抗震性能试验研究
Experimental investigation on seismic behavior of two types of buckling-restrained low yield point steel plate shear walls with multi-stiffeners
摘要
Abstract
Quasi-static tests were carried out on two 1 ∶ 3 scaled specimens of low yield point steel plate shear wails,whose infill plate utilized two types of buckling-restrained details with multi-stiffeners respectively.The comparative analyses on failure modes,hysteretic behavior,ductility,lateral stiffness,load bearing capacity and energy dissipation capacity between both types were conducted after the experiment.Then shear distribution between infill panel and perimeter frame was investigated.Next validity of stiffness threshold in frame columns and different deformation modes of steel plate shear walls (SPSWs) were discussed on the basis of above analyses.Research results show that the buckling-restrained detail with two side multi-stiffeners can effectively avoid overall elastic buckling of steel plate,reaching its design target of'yielding before buckling'.Failure mechanism on both of the specimens are reasonable,in according with design concepts of'strong outside frame-weak infill panel'and'strong column-weak beam',and associating in-plane flexure-shear failure modes eventually.Hysteretic loops of the new structure are spindle,which also exhibits stable bearing capacity and plastic deformation ability,as well as substantial ductility and large initial lateral stiffness.The transfer of shear distribution between outside frame and infill plate is stead and orderly,indicating them can compose reliable dual system.Approximated formulas for calculating maximum design shear demand and shear strength at column base are presented to examine whether the column occurring shear yielding premature.Finally,design formulas on shear strength Vs and bending strength Vm for SPSWs are proposed,in order to provide reference for structural engineers on preliminary selection of infill panel and perimeter frame.关键词
钢板剪力墙/低屈服点钢/密肋框格/屈曲约束/拟静力试验/抗震性能Key words
steel plate shear wall/low yield point steel/multi-stiffeners/buckling-restrained/quasi-static test/seismic behavior分类
建筑与水利引用本文复制引用
房晨,郝际平,樊春雷,袁昌鲁,申新波..两种密肋框格屈曲约束低屈服点钢板剪力墙抗震性能试验研究[J].建筑结构学报,2017,38(10):38-50,13.基金项目
国家自然科学基金项目(51578442). （51578442）
