IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i16p10335-d892603.html
   My bibliography  Save this article

Dynamic Response Mechanism of Silt Ground under Vibration Load

Author

Listed:
  • Zhanfei Gu

    (School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
    School of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China)

  • Hailong Wei

    (School of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China
    School of Geociences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Zhikui Liu

    (School of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China)

  • Mingfei Zhang

    (School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450046, China)

Abstract

The frequent vibration loads during the operation of trains can cause vibration deformation of the tunnel structure and surrounding weak strata, thereby endangering the safe operation of trains. The purpose of this paper is to study the dynamic response of surrounding soil layers caused by train vibrations through the finite difference method with FLAC3D. Based on existing research, we studied the artificially deterministic exciting force function. Then, we simulated the tunnel working conditions of a train with a 3D model, and applied the artificially deterministic exciting force function to the tunnel model. To study the vibration caused by trains in silty soil, we divided the trains into two cases, one-way and two-way. We compared the displacement–time curves of one-way and two-way trains. When the horizontal distance between the monitoring point and the vibration source increases, the peak value of the displacement–time curve decreases. As the speed of the train increases, the peak value of the displacement–time curve increases. The vertical displacement of the ground under the dynamic load of the two-way train is greater than that of the one-way train. In the acceleration–time curve, there is a lag in the ground acceleration response. The faster the speed of the subway train, the greater the peak value of the acceleration–time curve. This study can provide a guide for the evaluation and prevention of ground vibration subsidence and uneven subsidence of strata in the silt area of the Yellow River Region.

Suggested Citation

  • Zhanfei Gu & Hailong Wei & Zhikui Liu & Mingfei Zhang, 2022. "Dynamic Response Mechanism of Silt Ground under Vibration Load," Sustainability, MDPI, vol. 14(16), pages 1-18, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:10335-:d:892603
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/16/10335/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/16/10335/
    Download Restriction: no
    ---><---

    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:jsusta:v:14:y:2022:i:16:p:10335-:d:892603. 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.