考虑边缘构件剪力墙抗震抗剪承载力计算

CALCULATION FOR SHEAR CAPCITY OF SHEAR WALLS WITH BOUNDARY ELEMENTS

采用有限元程序VecTor2对矩形截面剪力墙、带端柱剪力墙和带翼缘剪力墙试件进行模拟试验对比,验证应用有限元程序VecTor2分析跨高比1.0-1.5的各种截面形式剪力墙构件抗震抗剪承载力的可行性&在此基础上,通过VecTor2软件对带端柱、带翼墙截面剪力墙抗剪承载力进行参数分析&分析结果与收集到的试验结果表明:在剪跨比为1和1-5时,与矩形截面剪力墙相比,随着边缘构件的截面面积以及纵筋配筋率的增大,带边缘构件剪力墙的抗震抗剪承载力相应增加&利用收集到的国内外试验结果以及有限元分析结果,以边缘构件相对面积与纵筋率为变量,对带端柱以及带翼缘剪力墙的抗剪承载力进行了非线性回归分析,分别得到在具有95%保证率,针对带端柱和带翼缘剪力墙抗剪承载力计算式的修正系数算式.

The finito elemeni program VecTor2 was used to simulate the sheas wall with rectangulas cross section,sheas wall with boundary cclumns and sheas wall with Oange.The results showed that the finite element program VecTor2 was feasible to simulate the seismic sheas capcity of sheas wall with verious sections.On this basis,the sheas capacity of sheas wall with boundary cclumns and sheas wall with Oange were analyzed by VecTor2 software.The simulation results and the ccllected test results suggested that when shear-ratio was 1.0 and 1.5,ccmpared with the sheae wall with rectangular cross section,seismic sheae capcity of the sheae wall with boundae members increased with the increasing of the section area and the reinforccment ratio of boundae members.Based on the ccllected test results and the finite element analysis results,the sheae capacite of sheae walls with boundae members was analyzed by nonlineas regression when the relative area and the longitudinat reinforccment ratio of boundae members are veriables.btainos The ccrrection coefficient of the sheas cTpacite of sheas walls with boundae members was obtained with a guarantee rate of 95%.