桥头引线与轨道刚度  

Bridge Lead Line and Track Stiffness

作　　者：宋文伟（译） 

出　　处：《世界轨道交通》2007年第12期52-53,共2页World Railway

摘　　要：研究背景 桥头引线（距桥梁两端约50英尺的轨道）经常出现下沉．需要不断进行轨道找平。人们普遍认为这是由于桥梁上的轨道刚度大，而桥梁外的轨道刚度低．从而形成刚度差所致。The Federal Railway Administration （FRA） conducted a study aimed at finding effective ways to overcome the subsidence problem of bridge Lead Line and the other track transition section. The other track transition section refers to places that the structure has been changed, such as bridges, cross-highway crossings, and cross-rail crossings. This paper provides first-hand information on the study.

关 键 词：轨道刚度 桥头引线 桥梁 

分 类 号：U213.21[交通运输工程—道路与铁道工程]