【摘要】 研究短肢剪力墙的力学模型和计算方法,根据T形短肢剪力墙的受力和变形特点,提出一种10自由度的变形杆系广义墙元模型。考虑翼缘墙与腹板墙的空间耦合作用,运用虚功原理建立T形短肢剪力墙的单元刚度矩阵。为短肢剪力墙结构空间弹塑性分析提供了新的思路,这一宏模型摒弃了现有宏模型中平面假定的限制,不仅可以反映中和轴的移动,而且还可以反映初始截面的剪切翘曲,并且编制了弹塑性时程分析程序,并输入三种不同的地震动进行了算例分析。更多还原

【Abstract】 The mechanical models and calculation methods of a short-leg shear wall are researched.According to the mechanical and deformation properties of a T-shaped short-leg shear wall,a generalized wall element model for deformed bars with ten degrees of freedom is put forward.Then the stiffness matrix of the T-shaped short-leg shear wall is derived by means of the virtual work principle,and the conceptual design is provided to the elastoplastic analysis on structure of the short-leg shear wall.This scheme reflects not only the shift of the neutral axis,but also the shear buckling of the cross section,and thus it is free of the restriction of plane assumption in existing models,and the program of the elastoplastic time history analysis is developed.Finally,an example is calculated by inputting three kinds of the earthquake resistance performance.更多还原