型钢自密实混凝土叠合剪力墙滞回性能有限元分析  

Finite element analysis of hysteretic behavior of self compacting concrete composite shear walls with shaped steel

作　　者：宋祥[1] 叶燕华[1,2] 姚荣[3] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009 [2]南京工业大学江苏省绿色建筑工程技术中心,江苏南京210009 [3]扬州科技学院土木工程学院,江苏扬州225009

出　　处：《武汉大学学报（工学版）》2017年第6期908-914,922,共8页Engineering Journal of Wuhan University

基　　金：国家自然科学基金资助项目(编号:51178218)

摘　　要：为进一步研究型钢自密实混凝土(SCC)叠合剪力墙的抗震性能,在已有试验研究基础上,采用MSC.MARC软件中的分层壳单元建立型钢SCC叠合剪力墙有限元模型,并采用该模型进行低周往复加载数值模拟.在此基础上,分析了暗柱型钢含钢率、叠合区锚固钢筋配筋率及轴压比对型钢SCC叠合剪力墙承载力和延性的影响.分析结果表明:采用该有限元模型计算得到的模拟结果与已有试验结果吻合较好,该方法可为叠合剪力墙结构体系抗震性能的数值模拟分析提供参考;随着暗柱型钢含钢率或叠合区锚固钢筋配筋率的增加,墙体承载力逐渐提高,但延性逐渐降低;型钢SCC叠合剪力墙在大震作用下的轴压比不应大于0.3.In order to study the aseismic performance of self compacting concrete （SCC） composite shear wails with shaped steel,the MSC. MARC software is used to simulate the hysteretic behavior of SCC composite shear walls with shaped steel under low cyclic loading with the layered shell elements based on the other researchers tests. Then, the influences of the steel ratio of concealed column, the reinforcement ratio of anchorage zone, the axial compression ratio on the bearing capacity and ductility are analyzed. The results obtained from the calculation are in good agreement with those from the experiment. The proposed method provides a reference for elastoplastic analysis of this type structures. As the steel ratio of concealed column or reinforcement ratio of anchorage zone increased, the bearing capacity of SCC composite shear walls with shaped steel increases; but its ductility reduces. The axial compression ratio of SCC composite shear walls with shaped steel should be restricted under 0.3 for aseismic design.

关 键 词：型钢自密实混凝土叠合剪力墙 滞回性能 分层壳单元 有限元分析 

分 类 号：TU375[建筑科学—结构工程]