三重钢管防屈曲耗能支撑性能的有限元模拟分析  

The Finite Element Modeling Analysis of Triple-steel Tube Buckling-restrained Brace Performance

作　　者：邓雪松[1] 褚洪民[1] 钱洪涛[1] 周云[1] 陈麟[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《华中科技大学学报（城市科学版）》2008年第3期99-103,共5页Journal of Huazhong University of Science and Technology

基　　金：科技部重大基础研究前期研究专项项目(2004CCA03300);广东省自然科学基金(06021581);广东省科技计划项目(2007B030401010);广州市科技攻关重大项目(2004Z1-E0051);广州市属高校科技计划重点项目

摘　　要：防屈曲耗能支撑克服了传统支撑受压屈曲的缺点,地震时具有良好的耗能能力和延性,是一种具有应用前景的耗能减震构件。本文介绍了三重钢管防屈曲耗能支撑的构造及耗能原理,采用ANSYS程序对其进行有限元分析,研究轴力管和约束管之间的空隙对于此种防屈曲耗能支撑承载力以及滞回耗能性能的影响,并用实验验证了有限元分析的正确性。研究结果表明:采用ANSYS软件对三重钢管防屈曲支撑进行模拟分析是可行的,三重钢管防屈曲支撑工作原理明确,具有稳定的滞回耗能能力,空隙对防屈曲支撑的耗能能力以及承载力有重要影响。As a kind of prospective energy dissipation and vibration reduction component, bucklingrestrained brace （BRB） overcomes the buckling characteristics of conventional braces, and behaves nice energy dissipation capacity and ductility under earthquake affection. In this paper, the constitution of the triple-steel tube buckling-restrained brace was introduced, as well as its energy dissipated principle, a FEM analysis of the triple-steel tube buckling-restrained brace by software ANSYS was conducted, and the influence of the gap between the core tube and the restrained tube to the bearing capacity and hysteretic performance of the brace was studied. And the correctness of the finite element analysis was verified by experiment. The result indicate that the simulation analysis of triple-steel tube buckling-restrained brace is feasible by software ANSYS, the operating principle of triple-steel tube buckling-restrained brace is obvious and its have a stable capacity of hysteretic energy dissipation, the gap of brace has a great influence on the energy dissipation capacity and bearing capacity.

关 键 词：三重钢管防屈曲耗能支撑 空隙 耗能性能 

分 类 号：TU352.1[建筑科学—结构工程]