既有轨道交通提速改造引起的无砟轨道几何形位调整分析  

Scheme of Geometrical Adjustment of Ballastless Track Section Caused by Speed Upgrading of Existing Urban Rail Transit Lines

作　　者：许名烜 Xu Mingxuan

机构地区：[1]上海市隧道工程轨道交通设计研究院

出　　处：《隧道与轨道交通》2023年第4期59-62,71,共5页Tunnel and Rail Transit

摘　　要：对于城市轨道交通无砟轨道地段,既有线提速改造引起的轨道几何形位调整难以通过扣件等既有设备冗余调整实现。介绍了目前轨道交通线路线型的改造方案,结合工程案例,分析了城市轨道交通无砟轨道地段轨道结构各部件改造的可行性及调整量。For the ballastless track section of urban rail transit,it is difficult to adjust the track geometry which is caused by the speed upgrading of the existing urban rail transit lines through the redundant adjustment of the existing equipment as fasteners.Based on the study of alignment modification,the feasibility and amount of adjustment of each component of track structure in the ballastless track section of urban rail transit are analyzed.

关 键 词：城市轨道交通 线路线型 无砟轨道 既有线提速改造 

分 类 号：U239.5[交通运输工程—道路与铁道工程] U213.244