Skip to main content

ORIGINAL RESEARCH article

Front. Built Environ.
Sec. Geotechnical Engineering
Volume 10 - 2024 | doi: 10.3389/fbuil.2024.1487764

Cyclic Behaviours of Soft Clay with Long-Term Traffic Loading considering Drainage Conditions

Provisionally accepted
yexiang jiang yexiang jiang 1ruofei li ruofei li 1*fengxiang su fengxiang su 1*guanyu chen guanyu chen 1*Chaobo Xia Chaobo Xia 2Junhao Tong Junhao Tong 3*Tingyu wu Tingyu wu 2,4*
  • 1 Hangzhou Metro Group Co., Ltd of Zhejiang Province, hangzhou, China
  • 2 Zhejiang University of Technology, Hangzhou, China
  • 3 Zhejiang Scientific Research Institute of Transport, Hangzhou, Jiangsu Province, China
  • 4 Zhejiang Key Laboratory of Civil Engineering Structures & Disaster Prevention and Mitigation Technology, hangzhou, China

The final, formatted version of the article will be published soon.

    The traffic loading is a typical cyclic loading with variable confining pressure and always lasts long, and is believed to have a significant effect on the subgrade soil, especially for the subgrade filled with soft clay. However, the mechanics have yet to be fully understood. Given that the duration of traffic loading lasts long enough, the partially drained conditions should be considered for the soft clay under the long-term cyclic loading, rather than the undrained conditions adopted commonly by most previous researches. In this study, 28 cyclic tests were conducted on the remolded saturated soft clay, utilizing both constant confining pressure and variable confining pressure under partially drained and undrained conditions. The effect of cyclic confining pressure and different drainage conditions is analyzed in relation to the evolution of pore pressure and deformation behaviors. Incorporating both the cyclic confining pressure and cyclic stress ratio, a concise pre-diction model of permanent strain is proposed and validated by the experimental results.

    Keywords: soft clay, Cyclic deformation, Traffic loading, Variable confining pressure, Partially drained, Cyclic stress ratio

    Received: 28 Aug 2024; Accepted: 04 Oct 2024.

    Copyright: © 2024 jiang, li, su, chen, Xia, Tong and wu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    ruofei li, Hangzhou Metro Group Co., Ltd of Zhejiang Province, hangzhou, China
    fengxiang su, Hangzhou Metro Group Co., Ltd of Zhejiang Province, hangzhou, China
    guanyu chen, Hangzhou Metro Group Co., Ltd of Zhejiang Province, hangzhou, China
    Junhao Tong, Zhejiang Scientific Research Institute of Transport, Hangzhou, Jiangsu Province, China
    Tingyu wu, Zhejiang University of Technology, Hangzhou, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.