不同开洞位置对短肢剪力墙抗震性能影响分析

摘要

Holes for placing pipelines are usually opened on the building. In order to study impacts of the hole position on the seismic performance of short pier shear wall, six short-pier shear wall finite element models with the same opening hole sizes and different opening positions are built. The influences of the hole positions on seismic performances of hysteretic behavior, bearing capacity, ductility, energy dissipation of short pier shear wall are investigated under low cycle repeated loading, and through changing opening position under different axial compression ratio, the impacts of hole position on the seismic performance of short pier shear wall are discussed. The calculated results show that different opening positions affect the bearing capacity and the seismic performance of short pier shear wall remarkably. Under the same axial compression ratio, the nearer the hole opening position to the wall bottom, the greater the impact on the structure performance will be. And the axial compression ratio is higher , the influence will be more obvious.%建筑物在日常使用过程中，常在短肢剪力墙墙肢上开设布置管道的孔洞。为了研究后期开设孔洞的位置对短肢剪力墙受力性能的影响，建立6个在墙肢上开设孔洞大小相同而孔洞位置不同的短肢剪力墙有限元分析模型；研究在低周反复荷载作用下，孔洞位置对构件滞回特性、承载力、延性、耗能能力等抗震性能的影响；通过在不同轴压比下改变孔洞位置，讨论不同轴压比下后期开设孔洞的位置对短肢剪力墙受力性能的影响。结果表明：墙肢开设孔洞位置不同对短肢剪力墙的承载能力和抗震性能有显著影响，在相同轴压比下，开设孔洞位置越靠近短肢剪力墙底部，对结构受力性能影响越大，并且轴压比越大，影响越明显。