钢筋混凝土剪力墙宏观有限元模型分析

Analysis of Macroscopic Finite Unit Models for R/C Shear Wall

分析了几种目前采用的钢筋混凝土剪力墙的宏观有限元模型 ,指出它们普遍存在的局限性是认为钢筋混凝土剪力墙首先发生弯曲破坏 ,然后才发生剪切破坏 ,故将剪切刚度的变化与轴向刚度的变化分开考虑 ,分别采用不同的滞回模型加以模拟 .笔者将这一问题加以改进 ,使钢筋混凝土剪力墙剪切刚度的变化随着轴向刚度的变化而变化 ,提出了改进的多竖线模型 .并且以实际算例进行验算 ,通过对比 ,所得的结果比较合理有效 .

The macroscopic finite unit models for R/C shear wall being used are analyzed, pointing out that the universal limitation of them is that it is generally considered that buckling destruction of R/C shear wall occurs first and the shearing destruction follows. The change of shear stiffness and axial stiffness is often considered separately and different hysteric models are adopted. The author improves on this issue and advances the improved model of multi component in parallel, making the variety of hear stiffness change with that of axial stiffness. Then an actual case is computed and the result is satisfying.