相邻联桥梁地震位移控制方法研究  

Research on Seismic Displacement Control Method of Adjacent Bridges

作　　者：刘畅 朱巍[1] LIU Chang;ZHU Wei(CCCC First Highway Consultants Co.Ltd.,Xi'an 710075,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安市710075

出　　处：《公路》2023年第7期93-97,共5页Highway

摘　　要：针对相邻联桥梁因地震相对位移过大而引起的碰撞问题,提出分别采用连接板式连梁装置和黏滞流体阻尼器进行位移控制的方法。以某大跨径连续刚构桥及其引桥为例,采用非线性时程动力分析方法,分别对连接板式连梁装置和黏滞流体阻尼器的应用效果进行分析。结果表明,连接板式连梁装置可以有效控制主引桥梁端地震相对位移,但有可能增大主引桥桥墩的地震内力;黏滞流体阻尼器既可以有效控制主引桥梁端地震相对位移,又可以显著降低主引桥桥墩的地震内力,推荐作为相邻联桥梁地震相对位移的控制措施。Seismic displacement control methods that respectively using plate-type connecting beam device and viscous fluid damper are proposed to solve the collision problem of adjacent bridges caused by excessive earthquake relative displacement.Take a long-span continuous rigid frame bridge and its approach bridge as an example,the nonlinear dynamic time-history analysis method is adopted to analyze the effects of plate-type connecting beam device and viscous fluid damper.The results indicate that the plate-type connecting beam device could effectively control the seismic relative displacement of the girders at transition pier,but it might increase the seismic internal force of the pier of main approach bridge.The viscous fluid damper could not only effectively control the seismic relative displacement of the girders at transition pier,but also significantly reduce the seismic internal force of the piers of main approach bridge and its approach bridge.The viscous fluid damper is recommended as a control measure for the seismic relative displacement of adjacent bridges.

关 键 词：桥梁工程 刚构桥 抗震性能 连梁装置 黏滞流体阻尼器 时程分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U448.23[交通运输工程—道路与铁道工程]