论文部分内容阅读
提出一种带约束拉杆双层钢板内填混凝土组合剪力墙,通过对6个剪跨比为2.0、轴压比为0.6的此类剪力墙试件的低周往复加载试验,研究试件的破坏形态、滞回曲线、骨架曲线、承载力退化、刚度退化、位移延性系数和耗能等抗震性能。结果表明:带约束拉杆双层钢板内填混凝土组合剪力墙抗震性能良好,6个试件的屈服位移角平均值为1/147,极限位移角平均值为1/48,位移延性系数平均值为3.57;减小约束拉杆间距和采用梅花式布置约束拉杆的方式,能更好地对钢板和混凝土提供约束,延缓钢板局部屈曲,增大混凝土的极限变形能力,提高剪力墙承载力、延性和耗能能力,减缓承载力退化和刚度退化,改善剪力墙抗震性能。
A kind of composite shear wall with constrained tie-bar double-layer steel-filled concrete is proposed. Through the low-frequency reciprocating loading test of six shear-wall specimens with shear-span ratio of 2.0 and axial compression ratio of 0.6, Such as failure mode, hysteresis curve, skeleton curve, bearing capacity degradation, stiffness degradation, displacement ductility coefficient and energy dissipation. The results show that the composite shear wall with constrained tie-rod double-walled steel plate has a good seismic performance. The average yield displacement angle of the six specimens is 1/147, the average displacement limit angle is 1/48 and the average value of displacement ductility coefficient Is 3.57. Reducing the restraining rod spacing and using the plum-style restraining rod can better restraint the steel plate and concrete, delaying the local buckling of the steel plate, increasing the ultimate deformation capacity of the concrete, increasing the bearing capacity and ductility of the shear wall And energy dissipation capacity, slow down the degradation of bearing capacity and stiffness, and improve the seismic performance of the shear wall.