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钢框架-薄钢板剪力墙竖向边缘构件刚度限值源于经典薄腹梁理论,其仅适用于钢框架,对于方钢管混凝土框架-薄钢板剪力墙,该刚度限值公式不再适用。该文基于薄腹梁理论,提出了方钢管混凝土竖向边缘构件的刚度限值计算公式。构建了不同宽高比和宽厚比分析模型,进行了非线性数值分析,研究了不同柱刚度对方钢管混凝土框架-薄钢板剪力墙力学性能、边框变形和破坏机制的影响。结果表明,按照该文公式设计的方钢管混凝土竖向边缘构件可充分发挥薄钢板剪力墙的结构性能,实现理想的破坏机制。
The stiffness limit of the vertical edge of steel frame-sheet steel shear wall is derived from the classical thin web theory, which is only applicable to the steel frame. For the square steel tube concrete frame-sheet steel shear wall, the formula of stiffness limit is no longer applicable . Based on the thin web beam theory, the formula for calculating the stiffness limit of the vertical edge component of concrete filled square steel tubular (CFST) is proposed. The different aspect ratio and aspect ratio analysis models were constructed and the nonlinear numerical analysis was carried out. The effect of different column stiffness on the mechanical properties and the deformation and failure mechanism of the CFST-sheet steel shear wall was studied. The results show that the vertical concrete members of the square tube concrete designed according to the formula can give full play to the structural performance of the thin steel plate shear wall and realize the ideal failure mechanism.