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为了研究内藏钢桁架组合中高剪力墙的抗震性能,进行了6个1/3缩尺的中高剪力墙低周反复荷载试验,其中包括2个普通混凝土剪力墙、2个内藏钢框架混凝土剪力墙和2个内藏钢桁架混凝土剪力墙,轴压比分别是0.2、0.5。在试验研究基础上,对比分析了两种轴压比下各剪力墙的承载力、刚度、延性、滞回特性、耗能能力及破坏特征。试验及分析表明:在不同轴压比下,内藏钢桁架混凝土组合中高剪力墙的抗震性能比普通混凝土中高剪力墙的抗震性能显著提高;高轴压比下各剪力墙的承载力比低轴压比下相应剪力墙的承载力明显提高,但其延性及耗能能力降低。
In order to study the seismic performance of high-shear walls with built-in steel trusses, 6 1/3 scale low-cycle repeated loading tests of middle and high shear walls were carried out, including two ordinary concrete shear walls and two built-in steel Frame concrete shear wall and two built-in steel truss concrete shear wall, the axial compression ratio is 0.2, 0.5. Based on the experimental study, the bearing capacity, stiffness, ductility, hysteretic characteristics, energy dissipation capacity and failure characteristics of each shear wall under two kinds of axial compression ratios are comparatively analyzed. The tests and analysis show that under different axial compression ratios, the seismic performance of the mid-high shear walls with built-in steel truss concrete composite structures is significantly higher than that of ordinary high-shear walls in ordinary concrete. The bearing capacity of shear walls at high axial compression ratio The bearing capacity of the corresponding shear wall under force-to-low axial compression ratio is obviously improved, but the ductility and energy dissipation ability are reduced.