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为了研究预应力对型钢混凝土短肢剪力墙抗震性能的影响,制作了2个1/2比例的型钢混凝土(SRC)短肢剪力墙试件,并对其开展了低周反复加载试验。试验研究表明,预应力型钢混凝土短肢剪力墙的破坏形态为延性较好的弯剪破坏,横向预应力的施加明显提高了墙体的耗能能力;与普通型钢混凝土短肢剪力墙相比,预应力型钢混凝土短肢剪力墙试件的开裂荷载、屈服荷载和极限荷载分别至少提高了15.4%、4.6%和24.5%,延性系数则提高了25.0%。对比可知,对型钢混凝土短肢剪力墙施加横向预应力是改善其抗震性能的一种有效途径。
In order to study the influence of prestressing on the seismic performance of SRC short-leg shear walls, two 1/2 SRC short-leg shear wall specimens were made, and the low-cycle repeated loading test was carried out. Experimental results show that the failure mode of prestressed steel short-leg shear wall is ductile shear failure, and the application of transverse prestress significantly enhances the energy dissipation capacity of the wall. Compared with ordinary steel short-leg shear wall The cracking load, yield load and ultimate load of prestressed steel concrete short-limb shear wall specimens are respectively increased by at least 15.4%, 4.6% and 24.5% respectively, and the ductility coefficient is increased by 25.0%. It can be seen from the comparison that applying transverse prestressing to the short steel-reinforced concrete short-leg shear wall is an effective way to improve its seismic performance.