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Sciences in Cold and Arid Regions ›› 2017, Vol. 9 ›› Issue (3): 229-235.doi: 10.3724/SP.J.1226.2017.00229

• ARTICLES • Previous Articles    

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

Bin Luo1, Hao Lai1, Tatsuya Ishikawa2, Tetsuya Tokoro3   

  1. 1. Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan;
    2. Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan;
    3. National Institute of Technology, Tomakomai College, Tomakomai 059-1275, Japan
  • Received:2016-11-22 Revised:2016-12-22 Published:2018-11-23
  • Contact: Luo Bin, Bin Luo, Graduate School of Engineering, Hokkaido University. 8 Kita 13, Nishi 8, Kita-Ku, Sapporo 060-8628, Japan. E-mail: bin-luo@eis.hokudai.ac.jp E-mail:bin-luo@eis.hokudai.ac.jp
  • Supported by:
    This research was 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.The support from the China Scholarship Council (CSC) is also greatly acknowledged.

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

Key words: railway, box culvert, coupled analysis, uneven frost heave, track irregularity, train vibration

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