Study of hydrothermal processes in ice-layers subgrade under constant temperature and dynamic loading
Jinbang Zhai, Ze Zhang, Linzhen Yang, Kunchao Zhou
TL;DR
This study examines how ice-layers in road subgrade soils respond to constant temperature and dynamic loading, affecting moisture and temperature distribution.
Contribution
The study reveals how dynamic loading alters hydrothermal conditions and moisture migration in ice-layers subgrade soils.
Findings
Dynamic loading changes temperature, moisture, and pore water pressure distribution in ice-layers subgrade.
Pressure differences caused by dynamic loading lead to moisture accumulation in loaded areas.
Lower soil temperatures reduce the impact of dynamic loading on moisture migration.
Abstract
The presence of ice-layers in the subgrade soils makes the hydrothermal state of road subgrade built in island permafrost regions more susceptible to external environmental influences. In order to deepen the study of the ice-layers subgrade, a hydrothermal study of subgrade under constant temperature and dynamic loading was carried out. It was found that dynamic loading can change the temperature, moisture and pore water pressure distribution. Under dynamic loading, the hydrothermal and pore water pressure state of the soil in the upper part of the ice layer changed significantly at the beginning of the test. The application of dynamic loads alters the spatial distribution of pore water pressure in the soil, resulting in pressure differences between different areas, which affects the migration of moisture and ultimately leads to the formation of areas with higher moisture content in the…
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Taxonomy
TopicsClimate change and permafrost · Cryospheric studies and observations · Smart Materials for Construction