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混凝土剪力墙轴压比限值的确定方法是目前尚未很好解决的问题之一。通过理论分析和数值计算,研究不设置约束边缘构件时矩形截面剪力墙的轴压比限值。研究结果表明:在混凝土极限压应变给定时,影响无约束边缘构件混凝土剪力墙轴压比限值的主要因素为剪力墙的高宽比和顶点目标位移角值,混凝土强度、竖向分布钢筋强度和配筋率的影响较小。据此提出了根据剪力墙的高宽比和顶点目标位移角值确定其轴压比限值的方法。方法简单实用,可供修订规范时参考。
The method of determining the axial compression ratio of concrete shear walls is one of the problems that has not been solved yet. Through theoretical analysis and numerical calculation, the limit value of axial compression ratio of rectangular section shear walls without restraint edge members is studied. The results show that the main factors affecting the axial compression ratio of concrete shear walls with unconstrained edge members are the aspect ratio of shear wall and the target displacement angle, the concrete strength and vertical distribution The effect of reinforcement strength and reinforcement ratio is small. Based on this, a method to determine the limit value of axial compression ratio is proposed according to the aspect ratio of the shear wall and the displacement of the apex target. The method is simple and practical, for reference when revising the specification.