位移放大型自复位防屈曲支撑滞回性能分析与数值模拟
Hysteretic Behavior Analysis and Numerical Simulation of Displacement Amplified Self-centering Buckling-restrained Brace
张路平 1尚朝阳 1陈麒丞 1张浩宇 1鲁军凯1
作者信息
- 1. 东北林业大学,黑龙江,哈尔滨 150040
- 折叠
摘要
提出一种位移放大型自复位防屈曲支撑,通过Abaqus有限元软件建立数值模型,研究支撑滞回性能、自复位特性以及耗能能力.结果表明:该位移放大型自复位防屈曲支撑具有较好的滞回性能、耗能能力及自复位特性.该支撑的承载力受自复位系统刚度影响较大,耗能能力受预拉力影响较小,当预拉力水平较低时,提高预拉力可以大幅提高支撑的复位性能.
Abstract
This study proposed a novel Displacement Amplified Self-centering Buckling-restrained Brace(DASCB).A series of nu-merical models of DASCBs were developed to study its hysteretic behavior,self-centering and energy dissipation capabilities based on the finite element software Abaqus.Results showed that the DASCBs exhibited good hysteretic behaviors,energy dissipation and self-centering capacities.Numerical results showed the stiffness of self-centering system had great effect on the bearing capacity of DAS-CBs,and yet the energy dissipation was affected less by the prestress level of steel strand.Increasing the prestress strength of steel strand can greatly improve the self-centering performance,when the pre-tension level of strand is low.
关键词
位移放大/自复位防屈曲支撑/预应力/有限元分析/滞回性能Key words
displacement amplification/Self-centering Buckling-restrained Brace/prestress/finite element analysis/hysteretic behav-ior引用本文复制引用
基金项目
国家级大学生创新创业训练计划项目(202110225164)
出版年
2024
NETL
NSTL
万方数据