Study on anti-frost heave effect of new thermal insulation subgrade of highway in seasonally frozen soil regions.

ABSTRACT: Frost heave is one of the important factors affecting the long-term stability and safe operation of subgrade in seasonally frozen soil regions. To investigate the anti-frost heave effect of foam concrete insulation and composite insulation structure subgrade, a multi-physics fields coupling numerical simulation was employed. From the perspective of hydrothermal process of the subgrade, the ground temperature distribution, maximum freezing depth, ice distribution, and maximum frost heave are systematically analyzed. The results indicate that the foamed concrete insulation layer subgrade exhibits a significant anti-frost heave effect. Meanwhile, to alleviate the sunny-shady slopes effect on subgrade in the seasonally frozen soils regions, the composite insulation structure combining XPS insu

SUBMITTER: Mi X 

PROVIDER: S-EPMC11793811 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature