摘要
本文根据高层建筑结构剪力墙的特点 ,将Allman[1] 单元加以简化 ,得到一种带旋转自由度的矩形墙板单元 ,将其与高精度的分层二节点厚梁单元组合 ,对钢筋混凝土联肢剪力墙作弹塑性有限元分析。为模拟钢筋混凝土的非线性 ,本文采用应变硬化的弹塑性应力应变关系描述受压混凝土及钢筋 ,用线弹性应力应变关系描述受拉混凝土 ,混凝土开裂后的非线性现象则以一些经验公式[2 ] 给予反映。算例表明 ,本文建立的有限元计算模型用于钢筋混凝土联肢剪力墙的加载全过程分析是合理的 。
In this paper, a rectangular plane stress element with degrees of freedom of rotation and a high-order 2-nodes layered beam element are presented. The combination of these two elements is able to simulate the continuity between the walls and the coupling beams completely. And in the element formulations, the elasto-plastic constitutive model for concrete and steel are adopted. The post-cracking behaviour of concrete is also taken into account. And a test of the model of reinforced concrete coupled shear walls at the University of Canterbury is reviewed. Good agreement between the analytical results and the experimental results is found by comparison.
出处
《结构工程师》
2003年第1期5-11,共7页
Structural Engineers
关键词
弹塑性
有限元
剪力墙
钢筋混凝土
高层建筑
elasto-plastic finite element anslysis, shear wall, reinforced concrete
