Frost heave analysis of ballasted track above box culvert and its influence on train vibration

作     者：Bin Luo Hao Lai Tatsuya Ishikawa Tetsuya Tokoro 

作者机构：Graduate School of Engineering Hokkaido University Faculty of Engineering Hokkaido University National Institute of Technology Tomakomai College 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2017年第9卷第3期

页      面：229-235页

核心收录：

学科分类：08[工学] 0705[理学-地理学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：supported in part by Grant-in-Aids for Scientific Research (A) (16H02360) and Research (C) (15K06214) from Japan Society for the Promotion of Science (JSPS) KAKENHI 

主　　题：railway box culvert coupled analysis uneven frost heave track irregularity train vibration 

摘      要：The uneven frost heave of frost-susceptible subgrade soil causes track irregularity,which highly enhances train vibration and affects the comfort and safety of railway *** paper presents a coupled thermo-hydro-mechanical(THM)analysis for the freezing behavior of railway located above a box *** vertical acceleration of the vehicle,an indicator of riding comfort,is predicted through a vehicle dynamic *** results reveal that the existence of a box culvert changes the subgrade thermal pattern,leading to a deeper frost penetration *** frost heave amount above the box culvert is larger than the adjacent section,resulting in uneven track structure upheave and track *** frostinduced track irregularity highly affects train vibration.