论文部分内容阅读
双钢板-混凝土组合剪力墙可减小墙体厚度、提高承载力和延性,为研究双钢板-混凝土组合剪力墙高轴压比下的抗震性能,完成了5个剪跨比为1.0的双钢板-混凝土组合剪力墙试件的拟静力试验,研究了剪力墙在低周往复荷载作用下的受力性能和破坏模式等,分析了轴压比、距厚比等因素对抗震性能的影响。试验结果表明:低剪跨比试件发生弯剪破坏;墙体钢板在平均位移角1/83时发生局部屈曲,初始屈曲形态受距厚比影响显著;试件峰值荷载、位移延性系数、刚度等受轴压比、距厚比的影响较小;试件平均极限位移角达1/72、平均有效破坏位移角达1/52,具有良好的变形能力;距厚比增大,试件滞回性能稳定性降低;试件耗能随变形增大而迅速增长,抗震性能良好。建议低剪跨比双钢板-混凝土组合剪力墙轴压比限值取0.7。
Double steel-concrete composite shear wall can reduce the thickness of the wall to improve the bearing capacity and ductility. In order to study the seismic performance of double-steel-concrete composite shear wall at high axial compression ratio, five shear-span ratios of 1.0 Static test of double-steel-concrete composite shear wall specimens was carried out. The mechanical properties and failure modes of the shear wall under cyclic low-cyclic loading were studied. The effects of axial compression ratio, The impact of performance. The test results show that the bending shear failure occurs in the low shear-to-span ratio specimens, the local buckling occurs in the wall steel plate at the average displacement angle 1/83, and the initial buckling morphology is significantly affected by the gauge-thickness ratio; the peak load, displacement ductility coefficient, Axial pressure ratio, the effect of thickness ratio is small; the average displacement limit of specimen is 1/72, the average effective damage displacement angle is 1/52, with good deformation capacity; The performance stability is reduced; the energy consumption of specimen increases rapidly with the increase of deformation, and the seismic performance is good. It is suggested that the low compression ratio double steel plate-concrete composite shear wall axial compression ratio should be 0.7.