双层矮斜拉连续箱梁桥的隔震分析  

Study on Seismic Isolation for the Double Decked & Partially Cable-Stayed Continuous Box-Girder Bridge

作　　者：陈朝辉[1] 陈燊[2] 郑为明 

机构地区：[1]上海铁路局技术中心,上海200071 [2]福州大学土木工程学院,福建福州350108 [3]福建省交通规划设计院,福建福州350004

出　　处：《山东交通学院学报》2010年第1期29-33,共5页Journal of Shandong Jiaotong University

基　　金：福建省交通科技发展项目(JT200212)

摘　　要：用铅芯橡胶支座隔震装置取代双层矮斜拉连续箱梁桥盆式橡胶支座,采用大型通用软件ANSYS建立该桥有限元模型,分析该隔震桥梁的动力特性和在El-Centro波激励下的地震时程响应,并与非隔震桥梁分析结果进行对比。研究表明:铅芯橡胶支座隔震装置对双层桥梁具有明显的减、隔震效果。This paper makes a prospective research on technology of seismic isolation.Lead rubber bearings（LRB） which is used as a seismic isolator-LRB is introduced to replace the pot neoprene bearing,and then a spatial computational model is built with the software ANSYS.The dynamic property and time-history seismic response under the excitation of El-Centro wave are analyzed and compared with the results of the non-isolated bridge.The research shows that the reduction and isolation efficiency of the LRB is obvious to double decked bridges.

关 键 词：双层桥 矮斜拉 连续箱梁 铅芯橡胶支座 隔震 

分 类 号：U448.12[建筑科学—桥梁与隧道工程]