CFRP筋转换梁框支剪力墙抗震性能试验的数值模拟仿真方法  

Numerical simulation method for the seismic performance test of frame supported shear wall with CFRP bars in transfer beam

作　　者：吴世娟 江世永[2] 陶帅 李雪阳 

机构地区：[1]中国人民解放军后勤工程学院军事土木工程系,重庆401311 [2]中国人民解放军后勤工程学院训练部,重庆401311

出　　处：《土木建筑与环境工程》2017年第5期16-22,共7页Journal of Civil,Architectural & Environment Engineering

基　　金：重庆市高校优秀成果转化类项目(KJZH14220)~~

摘　　要：对3榀CFRP筋转换梁框支剪力墙进行了低周往复荷载试验,并与1榀全钢筋转换梁框支剪力墙对比,分析了其破坏模式、受力特征和滞回特征等抗震性能。通过OpenSees分析平台,选取基于刚度法理论的非线性梁柱单元,并结合零长度转动弹簧单元,建立了合理考虑纵筋粘结滑移的CFRP筋转换梁框支剪力墙数值分析模型。结果表明:考虑了纵筋粘结滑移的数值模型能较好地模拟CFRP筋转换梁框支剪力墙在低周往复荷载作用下滞回曲线的捏缩特性,对试件屈服荷载和极限承载力也有较好的模拟精度。Three specimens of frame supported shear wall with CFRP bars in transfer beam were tested under low cyclic loading,comparing to one with steel bars.And the failure modes,stress characteristics and hysteretic characteristics were analyzed.The nonlinear beam column elements based on stiffness method and zero length rotational spring element were selected through the OpenSees analysis platform.A numerical analysis model was established to analyze the frame supported shear wall,reasonably considerating bond slip of longitudinal reinforcement,and the simulation results were compared with the experimental.The results showed that the numerical model considering the bond slip of longitudinal reinforcement,can well simulate pinch characteristics of hysteresis curve of frame supported shear wall under cyclic loads.Besides,the yield load and ultimate load also had preferable simulation accuracy.

关 键 词：CFRP筋 框支剪力墙 抗震性能 粘结滑移 

分 类 号：TU375[建筑科学—结构工程]