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设计了4片高强型钢高性能混凝土剪力墙试件,对其进行了低周反复加载试验。分析了试件在压、弯、剪共同作用下的破坏过程和破坏机理,讨论了含钢率、配箍特征值等参数对这种剪力墙的破坏形态、荷载-位移滞回曲线、骨架曲线、位移延性、刚度退化和耗能能力以及承载力的影响。研究结果表明,轴压比、配钢率、配箍率以及边缘约束区长度等对这种剪力墙的破坏形态、承载力、延性、滞回特性等均有影响,按《型钢混凝土组合结构技术规程》(JGJ 138—2001)中型钢混凝土剪力墙承载力计算公式所得结果与试验结果吻合较好。
Four high strength steel high performance concrete shear wall specimens were designed and their low cycle repeated loading tests were carried out. The failure process and failure mechanism under the combined action of pressing, bending and shearing are analyzed. The failure modes, load-displacement hysteresis curve, skeleton Curve, displacement ductility, stiffness degradation and energy dissipation capacity and bearing capacity. The results show that the axial compression ratio, steel ratio, stirrup ratio and the length of the restraining zone have an impact on the failure mode, bearing capacity, ductility and hysteretic characteristics of this kind of shear wall. According to the “steel reinforced concrete composite structure Technical Regulation ”(JGJ 138-2001) The calculation results of the bearing capacity of medium-sized steel concrete shear walls are in good agreement with the experimental results.