Numerical Simulation Study on the Hydrothermal Characteristics and Dynamic Response of the Embankment–Bridge Transition Zone in Cold Regions

Xiao Han, Shuang Tian (), Liang Dong (), Xianzhang Ling and Yike Wu
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Xiao Han: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
Shuang Tian: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
Liang Dong: Railway Engineering Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China
Xianzhang Ling: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
Yike Wu: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Sustainability, 2024, vol. 16, issue 13, 1-24

Abstract: The chain reaction of bridge abutment structure caused by frost heave of the embankment–bridge transition zone filler in cold regions has a great impact on the smoothness of railway lines, which will bring great challenges to the normal operation, safety, and maintenance of rail transit in cold regions under the action of long-term dynamic load. In this paper, the hydrothermal model and dynamic analysis model of the embankment–bridge transition zone are established, and the frost heave deformation rule and dynamic response characteristics of the embankment–bridge transition zone under frost heave conditions are studied. The results show that the effect of the bridge abutment structure on vertical frost heave is mainly concentrated in the range of the bridge abutment, and the vertical frost heave near the abutment is much smaller than other parts away from the abutment. The dynamic response and wheel–rail contact force of the embankment–bridge transition zone are significantly different under non-frost heave and frost heave conditions. Frost heave may cause a higher risk of derailment. This study provides a scientific reference for the design, construction, and safe operation and maintenance of embankment–bridge transition zones in cold regions, and has certain practical engineering significance.

Keywords: railway engineering; cold region; embankment–bridge transition zone; frost heave; dynamic response; numerical simulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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