Analysis of Embankment Temperature Regulation Efficiency of V-Shaped Bidirectional Heat Conduction Thermosyphon in Permafrost Regions

Feike Duan, Bo Tian (), Sen Hu and Lei Quan
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Feike Duan: School of Civil Engineering, Chongqing Jiaotong University, Chongqin 404100, China
Bo Tian: School of Civil Engineering, Chongqing Jiaotong University, Chongqin 404100, China
Sen Hu: School of Civil Engineering, Chongqing Jiaotong University, Chongqin 404100, China
Lei Quan: Research Institute of Highway, Ministry of Transport, Beijing 100088, China

Sustainability, 2025, vol. 17, issue 13, 1-18

Abstract: The complex climate in permafrost regions poses severe challenges to infrastructure, and freeze-thaw cycles accelerate the deformation and damage of road embankments. Conventional thermosyphon technology, though effective in lowering permafrost temperatures, has a limited range of effect, making it hard to meet the demand for large-scale temperature regulation. This paper proposes a V-shaped transverse thermosyphon design with bidirectional heat conduction. It connects at the embankment centerline and transversely penetrates the entire cross-section to expand the temperature regulation range. Using a hydro-thermal coupling model, the temperature regulation effects of vertical, inclined, and V-shaped thermosyphons were calculated. Results show that the V-shaped design outperforms the other two in temperature control across different embankment areas. Transverse temperature analysis indicates uniform cooling around the embankment center, while depth temperature analysis reveals more stable temperature control with lower and less fluctuating temperatures at greater depths. Long-term temperature analysis demonstrates superior annual temperature regulation, providing consistent cooling. This research offers a scientific basis for embankment temperature regulation design in permafrost regions and is crucial for ensuring long-term embankment stability and safety.

Keywords: permafrost regions; thermosyphon; bidirectional heat conduction; embankment; temperature regulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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