玉溪拱桥的抗震分析及减震措施  

Anti-Seismic Analysis and Anti-Seismic Measures for Yuxi Bridge

作　　者：国祥明[1] 肖盛燮[1] 隋严春[1] 郝艳广[1] 

机构地区：[1]重庆交通大学,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2007年第5期29-31,共3页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家科技攻关计划"西部开发科技行动"重大项目(2004BA901A02)资助

摘　　要：以玉溪大桥为研究对象,通过有限元分析软件ANSYS构建拱桥的模型,然后进行模态分析,研究拱桥的动力特性.最后进行时程分析,施加Taft地震波来计算拱桥在拱顶、1/4以及拱脚截面处的应力、位移和最大弯矩并且采用TMD进行减震设防.The model for Yuxi bridge was constructed on the basis of ANSYS. The research for the dynamic characteristics was made by mode analysis. Taking the arch crown and quarter section of the arch ring as key sections,by exerting Taft seismic wave on the bridge,the stress,displacement and the maximal moment of key sections were computated by the time-history analysis and the TMD equipment was used to reduce the seismic intensity.

关 键 词：动力特性 模态 时程分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]