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为了研究再生骨料对双肢剪力墙性能的影响,本文对4个1∶4缩尺的4层双肢剪力墙进行了低周反复荷载试验,各模型连梁跨高比均为1.0.模型1为普通混凝土双肢剪力墙,模型2、3分别为再生骨料取代率为50%、100%的再生混凝土双肢剪力墙,模型4为带暗支撑全再生混凝土双肢剪力墙.分析了各双肢剪力墙的抗震性能.结果表明:与普通混凝土双肢剪力墙相比,再生混凝土双肢剪力墙的抗震性能略差,且再生混凝土双肢剪力墙的抗震性能随再生骨料掺量的增加而下降;加配暗支撑可以使再生混凝土双肢剪力墙的抗震性能有效提高.建立了再生混凝土双肢剪力墙的承载力计算式,计算结果与试验结果吻合较好.
In order to study the effect of recycled aggregates on the performance of double-wall shear walls, four 1: 4-scale 4-storey double-wall shear walls were subjected to low-cycle cyclic loading test. The span-to- . Model 1 is a common concrete double-limb shear wall, and models 2 and 3 are respectively regenerated concrete double-wall shear walls with 50% and 100% replacement of recycled aggregates. Model 4 is a double- The results show that the seismic performance of the RC shear wall with two limbs is slightly worse than that of the ordinary RC shear wall, and the RC shear walls with double limbs The seismic performance of the RC shear walls decreases with the increase of the recycled aggregate content.The addition of dark support can effectively improve the seismic performance of the RC shear walls with double limbs.The bearing capacity formula of the RC shear walls with double limbs is established, The test results agree well.