In-situ Mechanical Property and Mechanism Analysis of Shallow Expansive Soil under the Influence of Water Content and Fissures

被引:2
|
作者
Luo, Xiaoqian [1 ,2 ]
Kong, Lingwei [1 ]
Yan, Junbiao [1 ,2 ]
Gao, Zhiao [1 ,2 ]
Tian, Shengkui [3 ]
机构
[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Guilin Univ Technol, Guangxi Key Lab Geotech Mech & Engn, Guilin 541004, Guangxi, Peoples R China
基金
国家重点研发计划;
关键词
Expensive soil; Fissure; Water content; California Bearing Ratio (CBR); Modulus of resilience; CHARACTERISTIC CURVE; CLAY; SUCTION; SLOPES;
D O I
10.1007/s12205-024-1440-6
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The mechanical properties of shallow expansive soil are crucial to expansive soil engineering. However, few effective test methods have been available to measure the in-situ mechanical properties of shallow expansive soil. This paper attempts to test the effects of water content and fissures on the mechanical properties of shallow expansive soil under a natural state by in-situ CBR and resilience modulus tests. The evolution characteristics of shrinkage fissures in expansive soil were recorded and observed. The fissure connectivity coefficient is used to express the degree of fissure development and the integrity of soil structure. The CBR strength and resilience modulus of expansive soil increase first and then decrease with the decrease of water content and the increase of fissure development degree, and reach the peak near the optimal water content. It is effective to use the inverse hyperbolic sine function to fit the relationship between soil mechanical parameters, water content, and fissure connectivity coefficient. When the water content is higher, the influence of water content on soil mechanical properties is great. When the water content is lower, fissures are more developed, and the influence of fissures on soil mechanical properties is dominant.
引用
收藏
页码:4281 / 4292
页数:12
相关论文
共 50 条
  • [31] In-situ characterizations and mechanism analysis of mechanical inhomogeneity in a prismatic battery module
    Zhong, Ximing
    Yang, Le
    Li, Na
    Chu, Zhichao
    Chen, Jian
    Zhu, Shengxin
    Song, Wei-Li
    Ai, Shigang
    Chen, Hao-Sen
    JOURNAL OF POWER SOURCES, 2022, 548
  • [32] Field measuring devices for in-situ analysis of fluorescent contaminants in water and soil
    Zimmermann, B
    Lucht, H
    FIELD SCREENING EUROPE, 1997, : 381 - 384
  • [33] Mechanical analysis and design of casing in directional well under in-situ stresses
    Yin, Fei
    Gao, Deli
    JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, 2014, 20 : 285 - 291
  • [34] Identifying mechanical property parameters of planetary soil using in-situ data obtained from exploration rovers
    Ding, Liang
    Gao, Haibo
    Liu, Zhen
    Deng, Zongquan
    Liu, Guangjun
    PLANETARY AND SPACE SCIENCE, 2015, 119 : 121 - 136
  • [35] Salt content estimation model of saline soil in Xining Basin based on water content and in-situ electrical conductivity
    Xu Z.
    Liu Y.
    Hu X.
    Yu D.
    Yang Y.
    Li H.
    Tao X.
    Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 2019, 35 (05): : 148 - 154
  • [36] Comprehensive analysis of thermo-mechanical responses in collapsible soil under varied water content conditions
    Ali, Nehal
    Metwally, Mohamed
    Elsawwaf, Mostafa
    Nazir, Ashraf
    JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2024, 149 (23) : 13721 - 13735
  • [37] Water retention property and microscopic mechanism of shallow soil in inner dump improved by fly ash and polyacrylamide
    Wang, Haipeng
    Wang, Xuedong
    Zhang, Heyong
    Li, Shiyu
    Qi, Lihui
    Li, Jin
    ENVIRONMENTAL MONITORING AND ASSESSMENT, 2024, 196 (08)
  • [38] Experimental Study and Mechanism Analysis of the Mechanical Property of Cement Soil with Different Straws
    Li, Furong
    Sun, Houchao
    3RD INTERNATIONAL CONFERENCE ON APPLIED ENGINEERING, 2016, 51 : 1069 - 1074
  • [39] Influence of Initial Water Content on the Mechanical Behavior of Unsaturated Sandy Clay Soil
    Mendes, J.
    Toll, D. G.
    INTERNATIONAL JOURNAL OF GEOMECHANICS, 2016, 16 (06)
  • [40] In-situ determination of soil water retention curves in heterogeneous soil profiles with a novel dielectric tube sensor for measuring soil matric potential and water content
    Yu, Song
    Xu, Qiang
    Cheng, Xianglin
    Xiang, Yang
    Zhu, Yufan
    Yan, Xiaofei
    Wang, Zhongyi
    Du, Taisheng
    Wu, Xin
    Cheng, Qiang
    JOURNAL OF HYDROLOGY, 2021, 603 (603)