新型抑制屈曲支撑极限承载力分析  

Ultimate Bearing Capacity Analysis of a New-Style Buckling Restrained Brace

作　　者：余绍锋[1] 郑维科[1] 邓长根[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《结构工程师》2008年第4期40-43,75,共5页Structural Engineers

基　　金：国家自然科学基金资助项目(编号:50478107)

摘　　要：简述了新型抑制屈曲支撑的发展情况,对同济大学结构稳定与监控课题组提出的新型抑制屈曲支撑建立了简化的力学模型,并据此采用有限元软件对其进行建模分析,得到不同截面与长细比的新型抑制屈曲支撑在轴力作用下的极限承载力。通过将分析值与内管按规范方法的极限承载力计算值相比较表明,新型抑制屈曲支撑能有效提高承载力,也为该新型支撑在网架、网壳结构失稳监测中的应用提供了初步的设计理论。The development of a new-style Buckling Restrained Brace are introduced, and the simplified mechanical model of the new-style BRB which was advanced by Tongji University was presented. According to the model, analysis by using finite software had been done, form which the ultimate bearing capacity in the axial load of the BRB with different sections and slenderness ratios had been obtained. And by comparing the ultimate bearing capacity with which calculated based on code, a conclusion was obtained that the new-style BRB can increase the ultimate bearing capacity effectively. So, the researches above support the elementary design theory for the application of the BRB in gridding structures.

关 键 词：抑制屈曲支撑 结构稳定 内核构件 

分 类 号：TU399[建筑科学—结构工程]