万金国1,2,杨凡3,李文峰1,苗启松1,张艳霞3

（1 北京市建筑设计研究院有限公司， 北京 100045； 2 清华大学土木工程系， 北京100084； 3 北京建筑大学， 北京 100044）

 

［摘要］提出一种具有双屈服点并能防止因变形过大而发生断裂的新型屈曲约束支撑，通过试验研究，验证了其传力机制和耗能能力。采用ABAQUS软件对试验进行数值模拟，从数值角度对该型支撑的受力机理进行研究。采用工程设计中常用的SAP2000软件中的非线性连接单元，对该屈曲约束支撑进行计算，将计算和试验结果进行对比，为新型屈曲约束支撑在实际工程中的应用提供了计算工具。试验结果表明，该型支撑具有良好的耗能能力和变形能力，计算结果能与试验结果吻合较好。

［关键词］屈曲约束支撑； 双屈服点； 滞回耗能； 试验研究； 力学性能； 数值模拟

中图分类号：TU399；TU352.11        文献标识码：A        文章编号：1002-848X(2013)17-0105-04

 

Wan Jinguo1,2, Yang Fan3, Li Wenfeng1, Miao Qisong1, Zhang Yanxia3

(1 Beijing Institute of Architectural Design, Beijing 100045, China; 2 Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 3 Beijing University of Civil Engineering and Architectural, Beijing 100044, China)

 

Abstract: A new type of buckling restrained brace(BRB) is presented, which has double yield points and the feature of non-fracture when its deformation is too large. Its force transmission mechanism and energy dissipation capacity were verified by experiment. Numerical simulation was used to verify the force mechanism of this type of buckling restrained brace using ABAQUS program. Then in order to use this buckling restrained brace in practical engineering, the brace was calculated by SAP2000 program with the nonlinear link elements and the skeleton curve from experiment. The result of experiment shows that this type of brace has a good energy dissipation capacity and deformation capacity. The results of calculation are in good agreement with that of the experiment.

Keywords: buckling restrained brace; double yield points; hysteretic energy; experiment research; simulation; mechanics

*十一五科技支撑计划项目（2009BAJ28B01）。

作者简介：万金国，博士，工程师，Email:wanjinguo83@163.com。

 

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