Analysis of consolidation in unsaturated soils considering air-water permeability function

被引：0
|
作者：
Chen C. [1 ]
Zhang Z. [1 ]
Zhang T. [1 ]
Zhao W. [1 ]
Liu F. [1 ]
Qi J. [2 ]
机构：
[1] Institute of Geotechnical Engineering, Xi'an University of Technology, Xi'an
[2] College of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing
来源：
Shuili Xuebao/Journal of Hydraulic Engineering | 2022年 / 53卷 / 12期
关键词：
air-water permeability function; one-dimensional consolidation analytical solution; pore-air pressure; pore-water pressure; unsaturated soil;
D O I：
10.13243/j.cnki.slxb.20220060
中图分类号：
学科分类号：
摘要：
The change of hydrogeological characteristics due to the filling of the reservoir of dam will induce significant foundation settlements of surrounding buildings. For the sake of reasonable prediction of the settlement, it is necessary to analyze the consolidation behavior of unsaturated soils. In response, based on the theory of mixture, the air-water permeability function and water retention equation were discrete linearized in the coupled equations of seepage-deformation. Then, the one-dimensional consolidation differential equations considering the variation of air-water permeability were obtained and analytically solved using integral transform method. Finally, a typical example of unsaturated soil layer in which air and water are interconnected was given to compare among the previous analytical solution without considering the variation of air-water permeability, the proposed solution and the finite difference solution. The results show that the influence of air-water permeability interaction on the consolidation process of unsaturated soil is considered in the proposed analytical solution, so that the calculated dissipation of pore water and air pressure and evolution of settlement by the proposed solution are closer to the corresponding calculated curve by finite difference solution than the previous solution. © 2022 China Water Power Press. All rights reserved.
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页码：1512 / 1525
页数：13
相关论文
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