不同轴压比新型混合装配式混凝土剪力墙抗震性能试验研究

对1个现浇、2个新型混合装配式足尺比例试件进行了低周反复荷载试验，以验证新型混合装配式剪力墙的抗震能力。同时，新型混合装配式试件考虑了0.1、0.2两种轴压比条件，以探讨轴压比参数对其抗震能力的影响规律。试验结果表明，与现浇试件相比，相同轴压比条件下，新型混合装配式试件的抗裂性能、承载力、刚度均较现浇试件明显提高，位移延性性能接近，耗能能力有所降低；随轴压比降低，新型混合装配式试件的刚度明显降低、残余变形增大、耗能能力提高，除试件强度特性外，各方面性能均劣于较高轴压比的现浇试件。

EXPERIMENTAL RESEARCH ON THE SEISMIC PERFORMANCE OF NEW HYBRID PRECAST CONCRETE SHEAR WALLS UNDER VARIOUS AXIAL COMPRESSION RATIOS

Low-cycle reversed lateral loading experiments were conducted on three full scale specimens, including one reference cast-in-place specimen with axial compression ratio of 0.20 and two new hybrid precast specimens with axial compression ratios of 0.10 and 0.20. In contrast with the cast-in-place specimen, it was found that the new hybrid precast specimens under the same axial loading possessed enhanced crack resistance, strength, lateral stiffness, similar displacement ductility and slightly decreased energy-dissipating capacity. By comparison of the two new hybrid precast specimens with different axial compression ratios, it was shown that as the axial loading was increased, the lateral stiffness was significantly reduced, the residual displacement was increased, and the energy-dissipating capacity was enhanced. The new hybrid precast specimen with lower axial compression ratio performed even poorer in all aspects except for strength than the cast-in-place specimen under higher axial compression ratios.