Microscopic Experimental Analysis of the Accumulated Plastic Strain on a Silty Soil Around a Tunnel Under a Subway Loading

被引:0
|
作者
Chunling Yan
Ling Zhang
Yiqun Tang
机构
[1] Anyang Institute of Technology,School of Civil and Architectural Engineering
[2] Tongji University,Department of Geotechnical Engineering
来源
Geotechnical and Geological Engineering | 2020年 / 38卷
关键词
Subway loading; Accumulated plastic strain; Microscopic test; Fractal dimension;
D O I
暂无
中图分类号
学科分类号
摘要
With the rapid development of subway transportation systems, the problem of uneven settlement around tunnels cannot be ignored. The soil around the tunnel near the Guoquan Road Station of Shanghai Metro Line 10 was investigated in this study. Through a dynamic triaxial test using a global digital systems, the factors affecting the accumulated plastic strain, such as frequency, dynamic stress amplitude, consolidation ratio, and other factors were considered. The experimental results showed that the accumulated plastic strain on silty soil was related to the vibration times, the amplitude of dynamic stress, and the frequency. Moreover, when the vibration times were constant, the accumulated plastic strain increased with an increase in the amplitude of dynamic stress. In contrast, the accumulated plastic strain decreased with an increase in the frequency. Scanning electron microscopy (SEM) was used to qualitatively and quantitatively analyze the microscopic characteristics of silty soil before and after cyclic loading. Through the introduction of the plane fractal dimension, the relationship between the microstructure parameters of silty soil and macroscopic deformation were established.
引用
收藏
页码:3435 / 3447
页数:12
相关论文
共 50 条
  • [21] Study of accumulative plastic deformation of silty subgrade soil under repeated loading
    Dong Cheng
    Leng Wu-ming
    Li Zhi-yong
    Zou Jing-rong
    ROCK AND SOIL MECHANICS, 2014, 35 (12) : 3437 - 3442
  • [22] Dynamic response of a thawing soil around the tunnel under the vibration load of subway
    He, Peng-Peng
    Cui, Zhen-Dong
    ENVIRONMENTAL EARTH SCIENCES, 2015, 73 (05) : 2473 - 2482
  • [23] Dynamic response of a thawing soil around the tunnel under the vibration load of subway
    Peng-Peng He
    Zhen-Dong Cui
    Environmental Earth Sciences, 2015, 73 : 2473 - 2482
  • [24] Analysis of the factors affecting the deformation of silty soil around Shanghai metro tunnel
    Chunling Yan
    Biaowei Sang
    Zhongcai Lin
    Cheng Wang
    Xin Qu
    Discover Applied Sciences, 7 (4)
  • [25] Long-term deformation characteristics of the soil around the subway tunnel induced by the vibration loading
    Cui Zhen-Dong
    Ren Shi-Xi
    DISASTER ADVANCES, 2012, 5 (04): : 1791 - 1797
  • [26] EXPERIMENTAL STUDY ON PERMANENT STRAIN BEHAVIOUR OF SILTY CLAY UNDER TRAFFIC LOADING
    Ding, H.
    Jiang, J. Q.
    Huang, B.
    Chen, Y. M.
    ENVIRONMENTAL VIBRATIONS: PREDICTION, MONITORING, MITIGATION AND EVALUATION, VOLS I AND II, 2009, : 520 - 526
  • [27] Research on the resilience behaviour and accumulated plastic strain characteristics of coarse-grained soil under transporting girder vehicle loading
    Nie R.
    Xiao L.
    Tan Y.
    Huang M.
    Zhou X.
    Rao Y.
    Journal of Railway Science and Engineering, 2023, 20 (08) : 2847 - 2857
  • [28] Resilient modulus and cumulative plastic strain of frozen silty clay under dynamic aircraft loading
    Xiaolan Liu
    Xianmin Zhang
    Xiaojiang Wang
    SN Applied Sciences, 2021, 3
  • [29] Resilient modulus and cumulative plastic strain of frozen silty clay under dynamic aircraft loading
    Liu, Xiaolan
    Zhang, Xianmin
    Wang, Xiaojiang
    SN APPLIED SCIENCES, 2021, 3 (10):
  • [30] Resilient and plastic strain behavior of freezing–thawing mucky clay under subway loading in Shanghai
    Yiqun Tang
    Jun Li
    Peng Wan
    Ping Yang
    Natural Hazards, 2014, 72 : 771 - 787