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The Longitudinal Push-Out Effect and Differential Settlement Control Measures of the Transition Section of Road and Bridge Induced by Freeze–Thaw Inducing

Author

Listed:
  • Liang Dong

    (China Academy of Railway Sciences, Beijing 100081, China)

  • Jingyi Liu

    (College of Civil Engineering, Harbin University of Science and Technology, Harbin 150090, China)

  • Ke Wang

    (College of Civil Engineering, Harbin University of Science and Technology, Harbin 150090, China)

  • Shuang Tian

    (College of Civil Engineering, Harbin University of Science and Technology, Harbin 150090, China
    Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401121, China)

  • Yonghua Su

    (China Academy of Railway Sciences, Beijing 100081, China)

Abstract

The environmental influence of seasonal freezing and thawing forces the longitudinal shear effect of the bridge abutment, and the differential settlement between the subgrade and the bridge abutment will significantly affect traffic safety. In this work, based on the finite element simulation analysis method, the longitudinal push-out effect and differential settlement of the transition section caused by cycles are systematically investigated, and the treatment results under different control measures (buffer layer thickness) are compared and analyzed. The results show that changing the thickness of the buffer material in the transition section has no significant influence on the overall temperature field of the subsurface. The longitudinal displacement of the transition region will be obvious under the condition of seasonal cycle, and its longitudinal thrust effect on the abutment shows a typical periodic law with the seasonal change. As the depth of the lower soil layer from the surface increases, the pushing effect becomes weaker and weaker. The development of the different subsoil settlements in the transition section also showed periodic changes with the passage of seasons. The differential settlement of the transition section after the buffer layer treatment can be effectively controlled, and the maximum value of the surface settlement of the roadbed after the 5 cm thick buffer material is reduced by 35%, compared with the two deformations of frostshocked bridges, where differential settlement after the buffer material treatment creates only tip deformation. After using a 15 cm thick buffer layer material treatment, the maximum settlement value of the surface settlement of the road base is reduced from 0.2 m to 0.01 m, which will not affect safety and driving comfort. The research conclusions can provide a reference for the design of road and bridge transition sections in frozen areas.

Suggested Citation

  • Liang Dong & Jingyi Liu & Ke Wang & Shuang Tian & Yonghua Su, 2024. "The Longitudinal Push-Out Effect and Differential Settlement Control Measures of the Transition Section of Road and Bridge Induced by Freeze–Thaw Inducing," Sustainability, MDPI, vol. 16(22), pages 1-16, November.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:22:p:9972-:d:1521756
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    References listed on IDEAS

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    1. Chao-Yuan Lin & Yuan-Chung Lai & Shao-Wei Wu & Fan-Chung Mo & Cheng-Yu Lin, 2022. "Assessment of potential sediment disasters and resilience management of mountain roads using environmental indicators," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 111(2), pages 1951-1975, March.
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