钢筋混凝土剪力墙面外抗震性能有限元分析  

The finite element analysis of out-of-plane seismic performance of reinforced concrete shear wall

作　　者：秦仕杰 QIN Shijie(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《新型建筑材料》2024年第10期74-78,共5页New Building Materials

基　　金：昆明理工大学分析测试基金项目(2022M20212210014)。

摘　　要：研究了混凝土强度、轴压比和纵筋配筋率对钢筋混凝土剪力墙面外荷载下抗震性能的影响,通过ABAQUS建立了抗震分析模型进行面外方向的低循环加载试验并开展有限元参数分析。试验结果表明:面外滞回曲线封闭面积较小,残余变形较大,耗能较差。混凝土强度等级C40、C50的承载力相较于C30时的分别增大了5.7%,37.6%,纵筋配筋率1.2%、1.6%的承载力相较于纵筋配筋率0.8%时的分别增大了28.2%,66.7%,轴压比0.4、0.6相较于轴压比0.2时的分别提高了11.4%、22.9%,但高轴压比下剪力墙的刚度退化较快,剪力墙的抗震性能降低。The effects of concrete strength,axial compression ratio and longitudinal reinforcement ratio on the seismic performance of reinforced concrete shear walls under out-of-face loading were investigated,and a seismic analysis model was established through ABAQUS to conduct low-cycle loading tests in the out-of-face direction and to carry out finite element parametric analysis. The test results show that the closed area of the out-of-face hysteresis curve is small,the residual deformation is large,and the energy dissipation is poor. Compared with C30 concrete,bearing capacity of concrete with strength class of C40,C50 increased by 5.7%,37.6% respectively. The longitudinal reinforcement ratio of 1.2% and 1.6% increased the load capacity by 28.2% and 66.7%respectively compared with 0.8%. The axial compression ratios of 0.4 and 0.6 increased by 11.4% and 22.9%,respectively,compared with 0.2,but the stiffness of the shear wall degraded faster under high axial compression ratios,and the seismic performance of the shear wall decreased.

关 键 词：钢筋混凝土剪力墙 抗震性能 面外加载 有限元分析 滞回曲线 

分 类 号：TU375[建筑科学—结构工程]