底部加厚钢管混凝土边框带缝剪力墙抗震性能试验研究

摘要

钢管混凝土边框带缝剪力墙是一种新型剪力墙,为进一步研究该新型墙体的抗震性能,设计制作了2个不同构造的剪力墙试件,并进行了低周反复加载试验.根据试验结果,分析了各试件的破坏特征、承载力、延性、刚度及退化过程、骨架曲线等抗震性能指标.研究表明:与普通钢管混凝土边框带缝剪力墙试件相比,底部加厚钢管混凝土边框带缝剪力墙试件的抗震性能显著提高,底部加厚钢管混凝土边框与钢筋混凝土带缝墙体能够协同工作并形成良好的抗震耗能机制.%The shear wall with concrete filled steel tube columns and seams is a new type of shear wall.In order to study seismic performance of this new type of wall deeply,two specimens with different structural measures are designed,and then tested to failure under cyclic lateral loading.According to the test results,seismic behaviors of each specimen,including failure mode,load-carrying capacity,ductility,stiffness degradation,hysteresis behavior and energy dissipating capacity are analyzed.The study results show that:compared with ordinary shear wall with concrete filled steel tube columns and seams,the seismic behavior of shear wall with bottom thickening concrete-filled steel tubular frames and seams is improved obviously,the bottom thickening concrete-filled steel tubular frames and reinforced concrete wall with seams can work coordinately and form an effective energy dissipation mechanism.