Feasibility Experiment and Simulation on Controlling the “Pot Cover Effect” of Subgrade in Seasonally Frozen Regions by Capillary Barrier Layer DOI
Mingli Zhang, Ruiling Zhang, Yaling Chou

et al.

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2025, Volume and Issue: unknown

Published: April 20, 2025

ABSTRACT The pot cover effect can increase the moisture content in shallow soil, which reduces subgrade strength and may lead to engineering issues, such as pavement cracks deformation. Therefore, studying prevention measures for is essential. This paper proposes preventive measures, inspired by capillary barrier layers used landfills, that involve installing mitigate effect. First, a self‐designed test device was compare hydrothermal changes conventional fill with gravel sand layer seasonal frozen soil environment. Second, water–vapor–heat coupling model developed simulate quantitative water migration induced during experiment. Finally, long‐term of using on loess northwest China simulated. results show at depth 2.5 cm, liquid without increases number freeze–thaw cycles, reaching maximum 5.9%. In contrast, same only 0.9%; vapor flux 1/10 layer. proposed method offers theoretical insights mitigating guiding future designs.

Language: Английский

Confirmation and utilization of water vapor circulation in soil under temperature gradients DOI

Yangping Yao,

G. Sun,

Han Chen

et al.

Acta Geotechnica, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Language: Английский

Citations

0
Feasibility Experiment and Simulation on Controlling the “Pot Cover Effect” of Subgrade in Seasonally Frozen Regions by Capillary Barrier Layer DOI
Mingli Zhang, Ruiling Zhang, Yaling Chou

et al.

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2025, Volume and Issue: unknown

Published: April 20, 2025

ABSTRACT The pot cover effect can increase the moisture content in shallow soil, which reduces subgrade strength and may lead to engineering issues, such as pavement cracks deformation. Therefore, studying prevention measures for is essential. This paper proposes preventive measures, inspired by capillary barrier layers used landfills, that involve installing mitigate effect. First, a self‐designed test device was compare hydrothermal changes conventional fill with gravel sand layer seasonal frozen soil environment. Second, water–vapor–heat coupling model developed simulate quantitative water migration induced during experiment. Finally, long‐term of using on loess northwest China simulated. results show at depth 2.5 cm, liquid without increases number freeze–thaw cycles, reaching maximum 5.9%. In contrast, same only 0.9%; vapor flux 1/10 layer. proposed method offers theoretical insights mitigating guiding future designs.

Language: Английский

Citations

0