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Volume 40 Issue S2
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CAI Guo-qing, ZHANG Ce, LI Jian, ZHAO Cheng-gang. Prediction method for SWCC considering initial dry density[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S2): 27-31. DOI: 10.11779/CJGE2018S2006
Citation: CAI Guo-qing, ZHANG Ce, LI Jian, ZHAO Cheng-gang. Prediction method for SWCC considering initial dry density[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S2): 27-31. DOI: 10.11779/CJGE2018S2006
shu

Prediction method for SWCC considering initial dry density

  • 1. Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;
    2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
    3. School of Civil Engineering, Guilin University of Technology, Guilin 541004, China

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  • Received Date: July 21, 2018
  • Published Date: October 29, 2018
    Graphical Abstract
    • Abstract
  • With the development of urbanization and industrialization, many engineering problems about unsaturated soils are often encountered in practical projects. Engineering accidents related to unsaturated soils have also appeared in highway and railway projects, causing huge economic losses and casualties. Firstly, the fitting results of three SWCC equations (van Genuchten equation, Fredlund-Xing equation and Brooks-Corey equation) on the test results of different types of soils (clay, silt and sand) are studied. Secondly, in order to analyze the fitting effect of each SWCC equation for the dependency of the initial dry density, the variations of model parameters with the initial void ratio of soils in each equation are discussed. Finally, a prediction method for SWCC considering the influence of the initial dry density is proposed, which assumes a linear relationship between the initial void ratio and the saturation under the same suction. This method is verified by the comparison between the predicted and test results.
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    • References (14)
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