一字形芯钢管混凝土防屈曲支撑分析研究  

Analysis of the rectangle section BRB with concrete-filled tubes

作　　者：杨士萱 史三元[1] 郝科语 王天龙 YANG Shixuan;SHI Sanyuan;HAO Keyu;WANG Tianlong(School of Civil Engineering,Hebei University of Engineering,Handan 056038,P.R.China;China Construction Bureau co. Ltd. Shenzhen branch,Guangdong Shenzhen,518000,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]中国建筑一局有限公司深圳分公司,广东深圳518000

出　　处：《河北工程大学学报（自然科学版）》2017年第3期1-5,共5页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51174124);河北省研究生创新项目(171290080015);河北省教育厅青年基金资助项目(QN2014070)

摘　　要：利用有限元分析软件ANSYS对普通支撑和一字形钢管混凝土防屈曲支撑进行模态分析,通过对比两种支撑的模态云图和振型参数来研究加约束的一字型芯钢混防屈曲支撑的优劣势和临界荷载变化及其失稳的位置。分析一字形钢管混凝土防屈曲支撑的滞回耗能,防屈曲支撑的摩擦系数和填充混凝土的强度因素。得到以下结论:一字形芯更容易出现y轴方向的弯曲失稳,框架结构的刚度以及自振周期能够通过安装一字形钢混屈曲支撑而发生明显改变。The finite element analysis software(ANSYS)is used to carry out the modal analysis ofthe common brace and buckling restrained brace.The advantages and disadvantages of the two kindsof support modes are compared.On the basis of modal analysis,the buckling mode of the structure isanalyzed.The critical load changes and instability position are also studied.The friction coeffi cient of thebuckling restrained brace and the strength of the fi lled concrete are analyzed.The results show that thebending of the Y axis is easier to occur in one core,and the stiffness and the natural vibration period ofthe frame structure can be obviously changed by installing a steel shaped hybrid buckling brace.

关 键 词：防屈曲支撑 ANSYS 屈曲模态分析 滞回性能 

分 类 号：TU37[建筑科学—结构工程]