碟簧式自复位防屈曲支撑滞回性能数值模拟

Numerical simulation of hysteretic performance of disc spring self-centering system buckling-restrained brace

为研究碟簧式自复位防屈曲支撑(SC-BRB)的滞回性能,利用Abaqus对其进行有限元分析,得到SC-BRB的滞回性能。参照相关试验和理论分析模型,验证有限元模型的准确性。结果表明:SC-BRB的滞回曲线呈现出显著的“旗帜型”特征,具备良好的复位效果和耗能能力;碟簧初始预压力越大,支撑的复位效果越好。

In order to study the hysteretic performance of the disc spring self-centering system buckling-restrained brace(SC-BRB),the finite element simulation is analyzed by using Abaqus,and the hysteretic performance of the support is carried out.The accuracy of the finite element model is verified by referring to the relevant experiments and theoretical analysis models.The results show that the hysteretic curve of SC-BRB presents a significant“flag”characteristic and has good restoring effect,and the higher initial preload of the disc spring,the more effective resetting action of the support.