IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i9p5127-d801075.html
   My bibliography  Save this article

Numerical Implementation of Three-Dimensional Nonlinear Strength Model of Soil and Its Application in Slope Stability Analysis

Author

Listed:
  • Xiaoang Kong

    (China Electric Power Research Institute, Beijing 100055, China)

  • Guoqing Cai

    (School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Yongfeng Cheng

    (China Electric Power Research Institute, Beijing 100055, China)

  • Chenggang Zhao

    (School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

Based on previous research results and the three-dimensional strength characteristics of different soil types, a three-dimensional nonlinear strength model of soil considering tenso-shear (T-S) coupling strength and compressive-shear (C-S) strength is established. The proposed model can better describe the influences of intermediate principal stress and T-S coupling stress in soil. The secondary development of user material subroutine (UMAT) is conducted in ABAQUS. The UMAT procedure is programmed using an implicit backward Euler integral algorithm, and numerical experiments verify its accuracy. This procedure is then applied to the analysis of slope stability. Using the strength reduction method, the stability of the saturated slope and unsaturated slope are analyzed. The numerical results show that when the slope approaches instability, the T-S coupling plastic zone and T-S coupling failure surface develop downward from the top surface of the slope. The critical slip surface is a composite slip surface composed of a C-S slip surface and a T-S coupling failure surface. Compared with the M-C strength model, the three-dimensional nonlinear strength model can describe the failure mechanism of the slope more clearly and reasonably and can provide an accurate stability evaluation.

Suggested Citation

  • Xiaoang Kong & Guoqing Cai & Yongfeng Cheng & Chenggang Zhao, 2022. "Numerical Implementation of Three-Dimensional Nonlinear Strength Model of Soil and Its Application in Slope Stability Analysis," Sustainability, MDPI, vol. 14(9), pages 1-20, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5127-:d:801075
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/9/5127/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/9/5127/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Quanwu Zhang & Zhiguo Shi & Jiazeng Shan & Weixing Shi, 2019. "Secondary Development and Application of Bio-Inspired Isolation System," Sustainability, MDPI, vol. 11(1), pages 1-17, January.
    Full references (including those not matched with items on IDEAS)

    Citations

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


    Cited by:

    1. Abdul Halim Hamdany & Martin Wijaya & Alfrendo Satyanaga & Harianto Rahardjo & Zhai Qian & Aswin Lim & Jong Kim, 2023. "Numerical Simulation on the Effect of Infiltration and Evapotranspiration on the Residual Slope," Sustainability, MDPI, vol. 15(11), pages 1-15, May.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      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:9:p:5127-:d:801075. 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.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.