IDEAS home Printed from https://ideas.repec.org/a/gam/jmathe/v10y2022i1p120-d715977.html
   My bibliography  Save this article

Vertical Nonlinear Temperature Gradient and Temperature Load Mode of Ballastless Track in China

Author

Listed:
  • Bin Yan

    (School of Civil Engineering, Central South University, Changsha 410075, China
    National Engineering Research Center of High-Speed Railway Construction Technology, Changsha 410075, China)

  • Ruiqi Cheng

    (School of Civil Engineering, Central South University, Changsha 410075, China)

  • Haoran Xie

    (China Railway Design Corporation, Tianjin 300308, China)

  • Xiangmin Zhang

    (School of Civil Engineering, Central South University, Changsha 410075, China)

Abstract

In the process of heat exchange with the external environment, the internal temperature of ballastless track structure presents a nonlinear distribution. The vertical temperature gradient will cause repeated warping and deformation of track slab, resulting in mortar layer separation, which will affect driving comfort and track durability. The traditional temperature field analysis method of concrete structure based on thermodynamics has the disadvantages of too many assumptions, difficult parameter selection and too much calculation of energy consumption. In this paper, based on the finite element software ANSYS, the heat exchange was transformed into the boundary condition of heat flux, which was applied to the thermodynamic analysis model to study the nonlinear temperature distribution law of ballastless track. The accuracy of the analysis method was verified by the measured data. On this basis, the regional distribution law of temperature gradient of ballastless track under different geographical coordinates and climatic conditions was studied. By adding a regional adjustment coefficient, the vertical temperature load model of ballastless track suitable for typical areas in China was proposed. The proposed temperature load model makes up for the lack of refinement of climate division and temperature load model in relevant specifications, and has strong engineering application and popularization value.

Suggested Citation

  • Bin Yan & Ruiqi Cheng & Haoran Xie & Xiangmin Zhang, 2022. "Vertical Nonlinear Temperature Gradient and Temperature Load Mode of Ballastless Track in China," Mathematics, MDPI, vol. 10(1), pages 1-15, January.
  • Handle: RePEc:gam:jmathe:v:10:y:2022:i:1:p:120-:d:715977
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2227-7390/10/1/120/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2227-7390/10/1/120/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Xiankai Quan & Wenhua Guo & Jun Tian & Weiguo Zhang, 2023. "Investigation on Effect of Reflective Coating on Temperature Field of CRTS Ⅱ Slab Ballastless Track under Sunlight," Sustainability, MDPI, vol. 15(2), pages 1-19, January.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jmathe:v:10:y:2022:i:1:p:120-:d:715977. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.