小半径曲线地段桥上无缝线路挠曲力分析  

Analysis of bending force of CWR on bridge in curved section with small radius

作　　者：侯芋杉 解天翼 袁明浩 李一悦 许晨霄 Hou Yushan;Xie Tianyi;Yuan Minghao;Li Yiyue;Xu Chenxiao(Shanxi State Railway Engineering Construction Co.,Ltd.,Xi’an Shaanxi 710054,China;Xinfeng Town Locomotive Depot,China Railway Xi’an Bureau Group Co.,Ltd.,Xi’an Shaanxi 710608,China;Xi’an Public Works Section,China Railway Xi’an Bureau Group Co.,Ltd.,Xi’an Shaanxi 710032,China)

机构地区：[1]陕西国铁工程建筑有限公司,陕西西安710054 [2]中国铁路西安局集团有限公司新丰镇机务段,陕西西安710608 [3]中国铁路西安局集团有限公司西安工务段,陕西西安710032

出　　处：《山西建筑》2024年第24期165-168,188,共5页Shanxi Architecture

摘　　要：为研究列车荷载作用下小半径曲线地段桥上无砟轨道无缝线路的力学特性及其分布规律,以简支梁桥和连续梁桥为例,基于有限元法和梁-轨相互作用原理,建立精细化有限元力学模型,分别分析了不同列车荷载工况及曲线半径对无缝线路挠曲工况受力与变形的影响,研究结论可为小半径曲线地段桥上无缝线路的设计和养护维修提供参考。In order to study the mechanical characteristics and distribution law of ballastless track continuous welded rail on bridge in small radius curve section under train load,taking simply supported beam bridge and continuous beam bridge as examples,based on the finite element method and beam-rail interaction principle,a refined finite element mechanical model is established.The influence of different train load conditions and curve radius on the stress and deformation of continuous welded rail under bending condition is analyzed respectively.The research conclusions can provide reference for the design and maintenance of continuous welded rail on bridge in small radius curve section.

关 键 词：小半径曲线 桥上无缝线路 列车荷载 力学特性 

分 类 号：TU311[建筑科学—结构工程]