低剪跨比双钢板-混凝土组合剪力墙抗震性能试验研究

单元式双钢板混凝土组合剪力墙便于拆装，能够实现建筑设计的灵活性，能够在抗震墙上方便快捷地开设门窗洞口。该文介绍了9个单元式双钢板混凝土组合剪力墙试件的抗震性能试验，研究了在低周往复荷载作用下单元式组合剪力墙的力学性能和破坏模式，分析了单元数量、轴压比等因素对抗震性能的影响。试验结果表明：单元式双钢板混凝土组合剪力墙具有承载力较好、良好的可拆装性、滞回曲线饱满，抗震性能优越。试件整体平均的位移延性系数是2.3，说明剪力墙试件具有较好的延性，到达峰值荷载后在较大的变形下能够继续维持荷载。墙体单元数量越多，承载力越低，初始刚度较低，但墙体具有更好的延性，能够在较大位移时具有更好的耗能能力。大轴压比可以获得较高的屈服荷载及峰值荷载，但破坏过程迅速，延性较差。混凝土强度增大，可以提高单元式组合墙的屈服荷载及峰值荷载，承载能力有所提高，但延性系数基本不变，说明混凝土强度对单元式组合墙体的变形能力影响较小。

New progress in research on double steel plate concrete composite shear walls

The modular composite shear wall with double steel plates and infill concrete is easy to disassemble and assemble, which can realize the flexibility of architectural design. In order to study the seismic performance of the modular composite shear wall, quasi-static tests of nine specimens were conducted. The mechanical performance and failure mode of the shear wall under low cycle reciprocating load were studied. The test results show that: the modular composite shear wall has good bearing capacity, good dismount ability, full hysteretic curve and superior seismic performance. The average displacement ductility coefficient is 2.3. The ductility of the shear wall specimens is good, and the specimens have good deformation capacity after yielding. The more the number of wall elements, the lower the bearing capacity and the lower the initial stiffness, but the wall has better ductility and better energy dissipation capacity at large displacement. High axial compression ratio can obtain higher yield load and peak load, but the failure process is rapid and the ductility is poor.