自复位三重钢管约束屈曲支撑有限元分析  

Finite element analysis of self-centering triple-steel tube buckling-restrained brace

作　　者：喻圣洁 YU Shengjie(School of Architectural Technology,Jiangsu Vocational Institute of Architectural Technology,Xuzhou,Jiangsu 221116,China)

机构地区：[1]江苏建筑职业技术学院建筑工程技术学院,江苏徐州221116

出　　处：《江苏建筑职业技术学院学报》2017年第4期16-19,共4页Journal Of Jiangsu Vocational Institute of Architectural Technology

基　　金：江苏建筑职业技术学院重点科研项目:空间钢结构屋面风灾预防与防治研究(JYA14-06);江苏建筑职业技术学院青年专项科研项目:自复位三重钢管约束屈曲支撑力学性能研究(JYQZ16-02)

摘　　要：为了研究自复位三重钢管约束屈曲支撑在地震作用下的耗能与复位能力,探索合理的端部约束形式.采用ABAQUS有限元分析软件,分别对自复位三重钢管约束屈曲支撑、自复位系统和三重钢管约束屈曲支撑系统进行实体建模,通过位移控制进行低周期循环加载.滞回性能分析结果表明:自复位三重钢管约束屈曲支撑,可近似看作自复位系统与约束屈曲支撑系统的并联工作.自复位系统无残余变形,不耗散能量.自复位三重钢管约束屈曲支撑同时具备自复位与耗能好的优点.此外,为了提高支撑承载力,支撑端部应加强扭转约束.In order to study the energy dissipation and resetting ability of self-centering triple-steel tube buckling-restrained brace(SCBRB)under earthquake and explore the reasonable form of end constraint,this paper establishes the finite element models of SCBRB、SC and BRB with finite element analysis software ABAQUS,conducts low cycle hysteresis loop loading via displacement control.Hysteresis per-formance analysis results show that SCBRB can be approximated as a parallel operation of SC and BRB,SC has no residual deformation and does not dissipate energy,BRB has big residual deformation and dis-sipate energy a lot,SCBRB have their advantages at the same time,and to improve the bearing capacity,ends should be reinforced by torsional constraints.

关 键 词：自复位 约束屈曲支撑 有限元 滞回性能 耗能 

分 类 号：TU352.1[建筑科学—结构工程]