采用新型竖向连接的预制混凝土剪力墙抗震性能有限元分析

摘要

基于新型竖向连接抗剪性能的试验研究,采用有限元软件ABAQUS对采用此种新型连接的剪力墙抗震性能进行了数值模拟.通过对已有现浇剪力墙和套筒剪力墙的拟静力试验结果模拟分析,验证了本研究有限元模型的正确性.基于该有限元模型分析了相同条件下现浇剪力墙、套筒连接剪力墙、新型连接剪力墙的耗能能力、刚度、承载力及延性.结果表明:相同轴压比下,采用新型竖向连接剪力墙的承载力和耗能能力优于套筒连接剪力墙,接近于现浇剪力墙.轴压比从0.1增加到0.3时,新型连接剪力墙的承载力和刚度显著提高.%Based on the experimental study of the shear performance of the new vertical connection,the seismic performance of the shear wall with this new connection was numerically simulated using the finite element software ABAQUS.By simulating and analyzing the pseudo static test results of cast-in-place shear walls and sleeve shear walls,the correctness of the finite element model was verified. Based on the finite element model,the energy dissipation capacity,stiffness,bearing capacity and ductility of cast-in-place shear wall, sleeve connection shear wall and new type connection shear wall were analyzed under the same conditions.The results show that under the same axial compression ratio,the bearing capacity and energy dissipation capacity of the new vertical connection shear wall are better than that of the sleeve connection shear wall,which is close to the cast-in-place shear wall.With the axial compression ratio increases from 0.1 to 0.3,the bearing capacity and stiffness of the new connection shear wall are greatly improved.