钢筋混凝土剪力墙构件地震损伤性能试验

为了研究剪力墙的地震损伤和基于位移的抗震性能设计,对7片不同设计参数的钢筋混凝土剪力墙构件进行了低周反复加载试验,记录了构件各损伤阶段的变形和裂缝宽度。根据试验结果,对比研究了轴压比、边缘构件配箍率、截面形式对剪力墙构件延性、承载力、变形特点和地震损伤的影响规律。研究结果表明:随着轴压比增大,构件承载力增大,剪切效应增大,延性降低,残余裂缝率减小;随着变形的增大和损伤加剧,构件剪切效应增强;工字形截面构件剪切效应更明显,裂缝开展较慢。

Experiment on seismic damage behavior of RC shear walls

In order to study reinforced concrete shear walls seismic damage and displacement-based seismic design,low cyclic loading test was carried out on seven reinforced concrete shear wall members with different design parameters.The deformation and crack width corresponding to individual damage states were recorded.Based on the test results,the influence of axial compressive ratio,stirrup ratio of the boundary element and cross-section shape on the ductility,bearing capacity,deformation characteristic and seismic damage was investigated.The results show that bearing capacity and shear effect increase with axial compression ratio increasing,but ductility and residual crack ratio decrease.With the deformation and damage increasing,the shear effect increases.I-shaped cross section shear walls have more shear effect,and crack developing slowly.