大跨度斜拉桥铅芯橡胶支座的参数优化  

Parameter Optimum of Lead-rubber Bearings (LRB) in the Long-span cable-stayed Bridges

作　　者：张锴[1] 郭文华[1] 

机构地区：[1]湖南城市学院土木工程学院,湖南益阳413000

出　　处：《重庆交通大学学报（自然科学版）》2011年第2期200-203,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：湖南省自然科学基金项目(03JJY3085);教育部留学回国人员科研启动基金项目(教外司留[2003]14号)

摘　　要：提出了一种采用铅芯橡胶支座进行大跨度斜拉桥减震分析方法;分别建立了大跨度斜拉桥、铅芯橡胶支座的空间有限元分析模型,采用时程分析方法计算了桥梁地震响应;用正交设计法对铅芯橡胶支座进行了参数优化。研究表明:经过优化设计的铅芯橡胶支座能有效的减小斜拉桥在地震下响应。Reducing vibration by lead-rubber bearings was proposed in long-span cable-stayed bridge.Spatial finite element models of a long-span cable-stayed bridge and LRBs were established respectively.Seismic responses of the bridge were calculated through time-history analysis;parameter optimum of LRBs was carried out by orthogonal design.The results indicated that LRBs with optimization design could effectively reduce seismic response of the cable-stayed bridge.

关 键 词：大跨度斜拉桥 铅芯橡胶支座 正交设计 减震 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]