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Volume 43 Issue S1
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ZHOU Feng-xi, ZHOU Zhi-xiong, SHAO Sheng-jun. Wetting deformation properties of unsaturated collapsible loess[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(S1): 36-40. DOI: 10.11779/CJGE2021S1007
Citation: ZHOU Feng-xi, ZHOU Zhi-xiong, SHAO Sheng-jun. Wetting deformation properties of unsaturated collapsible loess[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(S1): 36-40. DOI: 10.11779/CJGE2021S1007
shu

Wetting deformation properties of unsaturated collapsible loess

  • 1.

    School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China

  • 2.

    Xi'an University of Technology, Xi'an 710048, China

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  • Received Date: December 14, 2020
  • Available Online: December 05, 2022
    Graphical Abstract
    • Abstract
  • The wetting deformation behavior of unsaturated loess is studied under the framework of unsaturated soil mechanics.Based on the principle of effective stress of unsaturated soil is expressed by intergranular attraction, a constitutive model for wettig deformation of unsaturated loess is established.Through theoretical analysis, the integral expression for the yielding function of loading-wetting and the explicit formula for collapsibility coefficient of loess are given.Combined with the experimental data of undisturbed unsaturated loess, the characteristics of collapsing deformation under different hydraulic paths are analyzed, and the variation law of collapsibility coefficient is discussed.The results show that the model can well reveal the mechanical mechanism of deformation of unsaturated collapsible loess, and can provide some reference value for the researches on wetting deformation properties of loess and engineering application.
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    • References (12)
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