边缘构件节点现浇连接装配式RC双肢剪力墙抗震性能分析

Seismic performance analysis of assembled RC double shear wall with cast-in-place connection of edge member joints

为研究边缘构件节点现浇连接装配式RC双肢剪力墙抗震性能,分别对现浇式RC双肢剪力墙试件SW-1、装配式RC双肢剪力墙试件SW-2进行ABAQUS有限元模拟.模拟结果显示,试件SW-2的初始刚度低于试件SW-1,且试件SW-1的延性比试件SW-2高29.20%,但两试件具有相同的破坏形态,滞回曲线均为梭形,承载力相近;此外,改变试件SW-2混凝土强度等级、轴压比参数进行模拟,结果表明,试件SW-2在轴压比限值内轴压比的提高对试件SW-2有利;试件SW-2刚度、承载力随混凝土强度的提高而升高,延性比呈下降趋势.

In order to study the seismic performance of cast-in-place RC double-shear wall with cast-in-place connection of edge member joints,ABAQUS finite element simulation was conducted on cast-in-place RC double-shear wall specimen SW-1 and assembled RC double-shear wall specimen SW-2.The simulation results show that the initial stiffness of specimen SW-2 is lower than that of specimen SW-1,and the ductility of specimen SW-1 is 29.20% higher than that of specimen SW-2,but the two specimens have the same failure pattern,the hysteresis curve is spindle shaped,and the bearing capacity is similar.In addition,the concrete strength grade and axial compression ratio parameters of specimen SW-2 were changed to simulate.The results show that the increase of axial compression ratio is beneficial to specimen SW-2 within the limit value of axial compression ratio.The stiffness and bearing capacity of SW-2 increased with the increase of concrete strength,the ductility ratio showed a downward trend.