基于多垂直杆元模型的内藏型钢桁架组合剪力墙抗震性能分析

Seismic behavior of composite shear walls with internal steel truss based on MVLEM

选取剪力墙宏观模型中的多垂直杆元模型,利用Matlab软件编写程序,对比6个1/4缩尺的内置型钢桁架组合剪力墙试件的试验结果及模型分析的骨架曲线。研究结果表明:采用多垂直杆元模型的数值模拟与试验结果的骨架曲线吻合良好,承载力与刚度退化特征一致;采用钢筋混凝土剪力墙与内置型钢桁架组合的建模方法能够较好地模拟组合剪力墙的剪切本构关系。基于数值分析软件Matlab的多垂直杆元模型在组合剪力墙中的应用合理有效。

This research adopts Multiple-vertical-line-element-model( MVLEM), using Matlab to analyze the hysteretic behavior of six 1∶ 4 scale composite shear walls with internal steel truss in quasi-static test. The computed results indicated that the skeleton curves of specimens based on the simulation of MVLEM and experimental results are in well agreement. It is appropriate to simulate the hysteretic shear constitutive model by the combination of shear constitutive model and internal shaped steel truss. It is valid and efficient adopting MVLEM based on the numerical software Matlab to analyze the composite shear walls.