约束型开洞双钢板混凝土组合剪力墙的滞回性能

Analysis on hysteretic behavior of tubed concrete-filled double skin composite shear wall with opening

为提高开洞双钢板混凝土组合剪力墙的延性和抗震性能,将约束型钢管混凝土柱的概念引入开洞双钢板混凝土组合剪力墙,形成约束型开洞双钢板混凝土组合剪力墙。利用有限元软件ABAQUS对约束型开洞双钢板混凝土组合剪力墙进行滞回性能分析。结果表明,在高轴压比作用下,相较于同一高度下的组合剪力墙,约束型双钢板混凝土组合剪力墙的初始刚度和峰值荷载均略有降低,但其能量耗散系数有较大提高,建议预留缝宽取80 mm。

This paper is an attempt to improve the ductility and seismic performance of concrete-filled double skin composite shear wall with opening by introducing the concept of tubed steel reinforced concrete column and forming a new type of lateral force resisting members.The study is focused on analyzing the hysteretic performance of tubed concrete-filled double skin composite shear wall with opening using the finite element software ABAQUS.The results demonstrate that, when subjected to high axial compression ratio, tubed concrete-filled double skin composite shear wall with opening exhibits a slightly lower initial stiffness and bearing capacity than composite shear wall of the same height, but it has a greatly improved energy dissipation coefficient, allowing for seam width of 80 mm.