连续刚构桥采用屈曲约束支撑减震效果研究  

Study on the Seismic Mitigation Effect of Continuous Rigid Frame Bridge with Buckling Restrained Brace

作　　者：郑万山[1] 左永强 刘怀林[1] 高文军[1] 谢皓宇 ZHENG Wanshan;ZUO Yongqiang;LIU Huailin;GAO Wenjun;XIE Haoyu(State Key Laboratory of Structural Dynamics of Bridge Engineering,Chongqing 400067;Chongqing Design and Research Institute(Group)Co.,Ltd.,Chongqing 400042)

机构地区：[1]桥梁工程结构动力学国家重点实验室,重庆400067 [2]中煤科工重庆设计研究院(集团)有限公司,重庆400042

出　　处：《公路交通技术》2020年第6期54-59,共6页Technology of Highway and Transport

基　　金：国家重点研发计划项目(2017YFC0806000)。

摘　　要：为提升双薄壁墩连续刚构桥梁纵桥向抗震性能,提出在双薄壁墩的2个肢墩之间安装屈曲约束支撑,通过该支撑耗能来提升结构的抗震性能。采用有限元数值模拟分析方法,从BRB布置位置、安装角度、数量、布置方式等方面研究了连续刚构的抗震性能。结果表明,BRB可有效提高双薄壁墩连续刚构桥的纵桥向抗震性能。In order to improve the longitudinal seismic performance of continuous rigid frame bridge with double thin-walled piers,a buckling restrained brace is proposed to be installed between the two pier piers of double thin-walled pier,and the energy dissipation of the brace is used to improve the seismic performance of the structure.In this paper,the seismic performance of continuous rigid frame is studied from the aspects of BRB location,installation angle,quantity and layout method by finite element numerical simulation analysis method.The results show that BRB can effectively improve the longitudinal seismic performance of continuous rigid frame bridge with double thin-walled piers.

关 键 词：连续刚构 屈曲约束支撑 减震效果 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]