带约束拉杆钢板-混凝土组合剪力墙抗震性能试验研究

Experimental research on seismic behavior of composite concrete and steel plate shear walls with binding bars

为研究带约束拉杆钢板-混凝土组合剪力墙的抗震性能,制作10个钢板之间采用八螺母螺栓连接的钢板-混凝土组合剪力墙试件并对其进行拟静力试验,研究试件的破坏模式、变形能力及耗能能力,得到试件的滞回曲线、承载力、骨架曲线、刚度退化曲线、位移延性系数以及累计耗能曲线等,分析高宽比、约束拉杆间距、钢板厚度、核心混凝土厚度、轴压比及边缘增设型钢对试件抗震性能的影响。结果表明:钢板之间采用八螺母螺栓连接可行,带约束拉杆钢板-混凝土组合剪力墙抗震性能较好,随高宽比降低、约束拉杆间距减小、钢板厚度增大、核心混凝土增厚及边缘增设型钢,其抗震性能增强;端部增设型钢可显著提高试件承载力;减小约束拉杆间距可显著提高试件的延性。

In order to study the seismic behavior of composite concrete and steel plate shear walls with binding bars（CCSPW）,quasi-static tests were conducted on ten CCSPW walls under vertical loading.Bolt connection with eight nuts was used between two steel plates.The failure modes,deformation performance and energy dissipation capacity were observed.Valuable results were obtained for the hysteretic loops,bearing capacity,skeleton curves,stiffness degradation,ductility and energy dissipation capacity.The effects of different aspect ratios,binding bar spacing,plate thicknesses,core concrete thicknesses,axial compression ratios and setting of end steel shape on the seismic behavior were analyzed.The results indicate that bolt connection with eight nuts is feasible between two steel plates.The seismic performance of composite concrete and steel plate shear walls with binding bars is well and the seismic performance is enhanced with the setting of end steel shape.The decreases of shear span ration and binding bar spacing and the increases of plate thickness and core concrete thickness can improve the seismic performance.The capacity of specimen is highly improved by setting end steel shape and the ductility of specimen is highly improved by decreasing the binding bar spacing.