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为了研究型钢混凝土(SRC)剪力墙的变形能力,利用其截面变形条件和平衡条件,建立了截面的屈服曲率与极限曲率的计算公式,并根据剪力墙曲率延性系数与位移延性系数的关系,用数值分析方法计算了SRC剪力墙的位移延性系数。通过计算分析,得到了SRC剪力墙的轴压比、边缘约束区箍筋配箍特征值、墙体高宽比与位移延性系数之间的关系。研究结果表明,适当增加SRC剪力墙约束钢筋的配箍特征值及限制墙体轴压比,可以提高SRC剪力墙的位移延性。给出了满足具体延性需求、对应各种轴压比情况下的SRC剪力墙边缘约束区箍筋最小配箍特征值。
In order to study the deformation capacity of SRC shear wall, the formulas of yield curvature and ultimate curvature for the section are established by using the deformation conditions and the equilibrium conditions of section. Based on the relationship between the curvature ductility coefficient and displacement ductility coefficient , The displacement ductility coefficient of SRC shear wall was calculated by numerical analysis method. Through calculation and analysis, the relationship between the axial compression ratio of SRC shear wall, the characteristic value of stirrups in the confines of the confined zone, and the ratio of displacements to ductility is obtained. The results show that the displacement ductility of SRC shear walls can be increased by properly increasing the characteristic values of the bracing restraints on SRC shear walls and limiting the axial compression ratio of the walls. The eigenvalues of the minimum stirrups in the confining area of the SRC shear wall are given in order to meet the specific requirements of ductility.