开缝钢板剪力墙的理论分析与数值模拟

Theoretical Analysis and Numerical Simulation of Slit Steel Plate Shear Wall

开缝钢板剪力墙是一种新型的抗侧力构件,具有良好的延性和稳定的滞回性能,本文在理论分析的基础上,对开缝钢板剪力墙初始弹性刚度以及极限承载力估算公式进行了修正,利用公式对不同尺寸、开缝形式的开缝钢板墙进行了计算,并进行了非线性有限元分析。与试验结果对比表明,修正后的理论公式和有限元分析能够较好预估面外变形较小的墙板的性能,对墙板的极限承载力的估计值也能与试验值较好吻合,有限元结果很大程度上高估墙板的初始刚度。本文的分析和结论为开缝钢板剪力墙的数值模拟与手算复核提供了建议和依据。

Slit steel plate shear wall is introduced as a new lateral loads resisting system in this paper. It has been proved to performance well under cyclic load with good ductility and stable hysteresis. Initial stiffness and ultimate strength formula of slit steel plate shear wall are revised based on theoretical analysis and finite element method（FEM）. Different kinds of specimen are calculated based on formula and nonlinear FEM analysis. Comparison between formula results, FEM analysis with experimental results shows that revised formula can give reasonable estimation of slit steel plate shear wall with little out-plane deformation, while numerical method tends to overestimate its initial stiffness. Analysis method and conclusions at the end of this paper is expected to provide advice for FEM analysis and handwork calculation of slit steel plate shear wall.