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通过对4个缩尺比例为1∶2的不同再生粗骨料取代率、不同轴压比的T形再生混凝土(RAC)短肢剪力墙结构模型进行低周反复荷载作用下的抗震性能试验,分析试验所得模型破坏形态、特征曲线、延性、刚度退化、耗能能力及正负向特征荷载的变化规律。分析结果表明:(a)T形RAC短肢剪力墙具有良好的抗震性能,能够应用于轴压比较小的实际工程之中。(b)随着再生粗骨料取代率的增加,T形RAC短肢剪力墙特征曲线、耗能能力等指标逐渐增强,同时,随着轴压比的增大,各指标逐渐减小;试件延性性能随着再生粗骨料取代率及轴压比的增加出现不同程度的降低。
The seismic behavior of T-shaped RC concrete short-leg shear wall with different replacement ratios and different axial compression ratios under different cyclic coarse-grained materials with 1: 2 scale ratio Test, analysis of experimental model damage morphology, characteristic curves, ductility, stiffness degradation, energy dissipation capacity and positive and negative characteristics of the load changes. The results show that: (a) T-shaped RAC short-leg shear wall has good seismic performance, which can be applied to practical projects with small axial compression ratio. (b) As the replacement rate of recycled coarse aggregate increases, the T-shaped RAC short-leg shear wall characteristic curve, energy consumption and other indicators gradually increase, meanwhile, as the axial compression ratio increases, the indexes decrease gradually; The ductility of the specimen decreases with the increase of the replacement ratio of recycled coarse aggregate and the increase of axial compression ratio.