预制夹芯保温L形剪力墙低周反复加载试验

Low frequency cyclic loading tests of L-shaped precast sandwich insulation shear wall

为研究预制夹芯保温L形剪力墙在低周反复荷载作用下的受力性能、破坏特点和抗震性能,对4个夹芯保温L形剪力墙试件(3个为全预制试件,1个为现浇对比试件)进行拟静力试验,研究各个试件的破坏形态、承载能力、滞回曲线、骨架曲线、刚度退化及耗能能力。试验结果表明:轴压比对预制夹芯保温L形剪力墙抗震性能的影响明显;预制夹芯保温L形剪力墙具有良好的抗震性能,可代替现浇夹芯保温剪力墙用于实际工程中。

To study the mechanical behavior,failure feature and seismic behavior of L-shaped precast sandwich insulation shear wall,pseudo-static tests on four L-shaped precast sandwich insulation shear wall specimens（ including three wholly precast specimens and one cast-in-situ specimen for comparison） were conducted to study the failure mode,bearing capacity,hysteretic curve,skeleton curve,stiffness degradation and energy dissipation capacity of specimens. The results show that： the influence of the axial compressive ratio on the seismic behavior of the L-shaped precast sandwich insulation shear wall is obvious; L-shaped precast sandwich insulation shear wall has good seismic behavior and it can be a good substitute for in-situ sandwich insulation shear wall used in practical engineering.