高速铁路小半径曲线T形刚构桥设计  

Design of T-shaped rigid frame bridge with small radius curve for high speed railway

作　　者：王建圣 WANG Jiansheng(JiQing High Speed Railway Co.,Ltd.,Jinan 250014,China)

机构地区：[1]济青高速铁路有限公司,山东济南250014

出　　处：《山东交通学院学报》2023年第3期93-100,128,共9页Journal of Shandong Jiaotong University

基　　金：济青高速铁路科研计划项目(JQKJ2022-09)。

摘　　要：为减小某高速铁路连接线施工时对与其小角度交叉的运营高速铁路的影响,采用大跨度小半径曲线T形刚构桥转体桥梁施工方案,设计曲线T形刚构桥主梁和主墩的结构形式,采用有限元软件MIDAS Civil和BSAS计算分析曲线T形刚构桥在施工阶段、运营阶段及地震等工况下的结构应力、挠度和支反力等,采用MIDAS Civil计算分析成桥阶段小半径曲线T形刚构桥的动力特性。结果表明:曲线T形刚构桥主梁及主墩结构的应力、挠度、自振频率等控制性指标均符合设计要求。In order to reduce the impact of the construction of a high speed railway connecting line on the operating high speed railway crossing with it at a small angle,the construction scheme of a large-span T-shaped rigid frame bridge with small radius curve is adopted.Structural form of main girder and main pier of curved T-shaped rigid frame bridge is designed.The structural stress,deflection and support reaction of curved T-shaped rigid frame bridge is calculated and analyzed under construction stage,operation stage and earthquake conditions with the finite element software MIDAS civil and BSAS.The dynamic characteristics of T-shaped rigid frame bridge with small radius curve at completion stage are analyzed with MIDAS Civil.The results show that the stress,deflection,natural vibration frequency and other control indexes of the main girder and main pier structure of the curved T-shaped rigid frame bridge meet the design requirements.

关 键 词：高速铁路 小半径曲线 T形刚构桥 结构设计 动力特性 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]