型钢-高强混凝土剪力墙抗震性能试验及数值模拟分析

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关键词型钢-高强混凝土剪力墙，抗震性能，低周反复加载试验，高轴压比，数值模拟 中图分类号： TU317+.1 文献标志码：A DOI： 10.15935/j.cnki.jggcs.202503.0011

AbstractThe seismic performance of steel high-strength concrete shear walls （SHCWs）under high axial compression ratio is studied by cyclic loading test.The UMATsubroutine of ABAQUS was used to develop the constitutive model of concrete and steel，and the numerical model of each wall specimen is established. Parameter analysiswas conducted based on the finite element models verified by experiments.The results show thatthe SHCWs has good deformation and energy dissipation performance under high axial compression ratio.The numerical model can accurately predict the pinch effect and strength decline of the hysteresis curves. The simulated and experimental hysteresis curves have similar loading and unloading stiffess，bearing capacity，ultimate displacement and energy consumption.The parametric analysis shows that the steel ratio canbe effectively reduced（approximately 66.7% ）by increasing the concrete strength（C6O→C8O）under the premise of ensuring the hysteretic performance of the walls.By increasing the axial compression ratios （ 0.4 0.6），the deformation performance of the SHCWs is significantly reduced （ulitimate drift ratios 2.96% （204号 4.70% ），and the post-peak strength decrease of the walls is accelerated.By increasing the steel ratio of the wall （ 2%10% ），the increase of bearing capacity of the wall is limited，and the deformation performance of

thewallislittleaffected.

KeywordsSHCWs，seismic performance，cyclic loading test，high axial load ratio， numerical simulation

0 引言

剪力墙或由剪力墙组成的筒体是高层与超高层建筑的主要抗侧力与竖向承压构件，高层及超高层结构底部剪力墙构件需承受巨大的竖向荷载，往往需采用较厚墙体才可满足轴压比限值的要求，而过厚的墙体不仅增加结构自重和造价，还会相应地引起结构地震效应的增大，同时也减少了建筑的使用面积。（剩余12977字）