【摘要】 基于钢筋砼杆件截面的轴力-弯矩-曲率关系,建立了考虑杆件P-Δ效应和剪切变形且能分析结构极限状态的非线性有限元法。将剪力墙当作特别杆单元,对不同高度、配筋、轴压比和刚度特征值的中断剪力墙的框-剪结构进行了静力弹塑性分析。设定可中断剪力墙高度的条件。计算表明:上部剪力墙中断的相对高度值的决定因素为结构顶部的位移;相对高度值与配筋和轴压比无关;与结构高度关系较小;随着刚度特征值的增加,相对高度值随之增加,并给出了两者之间的表达式。更多还原

【Abstract】 Based on the relationship among axial force-bending moment-curvature of reinforced concrete member section, the nonlinear finite element method considering P-Δ effect and shear deformation was established which was able to analyze the ultimate state. Regarding the shear wall as special beam elements, the frame-shear wall structures with shear wall interrupted at different heights, with different reinforcements, axial compressive ratios and rigidity characteristics were analyzed. The conditions of interruptable shear wall height are proposed. Calculation results indicate that the decisive factor influencing interruptable relative height above the shear wall is the top displacement; the relative height is not related to reinforcements and axial compressive ratios, and slightly related to structure height. With the increase of the rigidity characteristic, the relative height increases. The equation between them is proposed.更多还原