一种T形短肢剪力墙的墙元宏模型

A wall element macro-model of T-shaped short-leg shear wall

研究了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。

Mechanics model and calculation method for short - leg shear wall was studied, and a generalized wall element model on deformed bar with ten degrees of freedom was initiated in accordance with the stress and deformation characteristics of T - shaped short - leg shear wall. In consideration of space coupling action of flange wall and web wall, the element stiffness matrix of T - shaped short - leg shear wall was built up by applying virtual work principle. This provides a new thought for space elastic - plastic analysis of short - leg shear wall, this macro model gets rid of the restriction of plane assumption in existing macro - model, it can not only reflect the movement of neutralization axis, but also can reflect the shear warp of primary section.