基于BIM的铁路车辆-无砟轨道护轨性能分析  

Performance Analysis of Railway Vehicle⁃Ballastless Track Guard Track Based on BIM

作　　者：刘沛 陈卫国 张耀[1] LIU Pei;CHEN Weiguo;ZHANG Yao(China Railway Eryuan Engineering Group Co.Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道建筑》2021年第9期138-143,共6页Railway Engineering

基　　金：中铁二院工程集团有限责任公司科技研究开发计划[KYY2019063(19-21)]。

摘　　要：为了可视化研究高速铁路轨道护轨装置对车辆脱轨后的保护作用和自身的力学响应,以非线性大变形有限元法为理论基础,以三维空间为设计与分析环境,利用Bentley⁃OpenRail Designer软件设计并建立了轨道及其护轨结构的BIM模型,采用HyperMesh14.0软件建立了轨道-车辆脱轨系统有限元模型,通过LS⁃DYNA程序分析计算了护轨方案的防护性能。研究结果表明:考虑了柔性变形的有限元法使得列车在脱轨后撞击轨枕块和护轨的过程具有合理、可靠的传力过程和运动状态;车辆在脱轨过程中,车轮抬升量、护轨横向变形、轨道板强度均满足相应的设计安全要求;脱轨过程结束后,车辆以稳定的倾斜但不倾覆状态继续沿轨道滑行;护轨对车辆具有良好的保护作用。In order to visually study the protective effect of high speed railway track guard device on vehicle derailment and its mechanical response,the BIM model of track and its guard structure was designed and established by using Bentley⁃OpenRail Designer software based on the nonlinear large deformation finite element method and threedimensional space as the design and analysis environment.The finite element model of rail-vehicle derailment system was established by using HyperMesh14.0 software,and the protection performance of guard rail scheme was analyzed and calculated by LS-DYNA program.The research shows that the finite element method considering flexible deformation makes the process of train hitting sleeper block and guard rail after derailment have reasonable and reliable force transmission process and motion state.During the derailment of the vehicle,the wheel lifting,lateral deformation of guard rail and track slab strength all meet the corresponding design safety requirements.After the derailment process,the vehicle continues to slide along the track in a steadily declining but non overturning state.The guard rail scheme has a good protective effect on vehicles.

关 键 词：铁路轨道 护轨结构 BIM模型 有限元模型 柔性变形 传力过程 运动状态 

分 类 号：U213.2[交通运输工程—道路与铁道工程]