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Numerical evaluation for cooling performance of a composite measure on expressway embankment with shady and sunny slopes in permafrost regions

Author

Listed:
  • Ma, Qinguo
  • Luo, Xiaoxiao
  • Gao, Jianqiang
  • Sun, Weiyu
  • Li, Yongdong
  • Lan, Tianli

Abstract

As an efficient engineering measure for protecting permafrost from thawing, the composite measure composed of L-shaped two-phase closed thermosyphons (TPCTs), insulation board and crushed-rock revetments (CRs) is applied to the low-grade highway in the Qinghai-Tibet Plateau. However, it is uncertain whether this composite measure can be available for an expressway embankment with wide bituminous pavement and strict deformation requirement, and the deformation performance of the embankment with composite measure is the key factor controlling safe operation. In this study, a hydro-thermo-mechanical coupled model for the expressway embankment combined with the composite measure is developed, the working process and mechanism of L-shaped TPCTs, insulation board and CRs are analyzed, respectively, and the cooling and reinforcing effects of the composite measure for the embankment with shady and sunny slopes are evaluated. The numerical results show that: (1) The working process and mechanism of L-shaped TPCTs, insulation board and CRs are different. (2) The composite measure can not only prevent the permafrost degradation, but also relieve the asymmetric geotemperature and moisture distributions caused by shady-sunny slope effect. (3) The composite measure can significantly reduce the embankment deformation, reliably alleviate the deformation difference and reinforce the stability of the expressway embankment in permafrost regions.

Suggested Citation

  • Ma, Qinguo & Luo, Xiaoxiao & Gao, Jianqiang & Sun, Weiyu & Li, Yongdong & Lan, Tianli, 2022. "Numerical evaluation for cooling performance of a composite measure on expressway embankment with shady and sunny slopes in permafrost regions," Energy, Elsevier, vol. 244(PB).
    • Handle: RePEc:eee:energy:v:244:y:2022:i:pb:s0360544222000974
    DOI: 10.1016/j.energy.2022.123194
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    References listed on IDEAS

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    1. Yanhu, Mu & Guoyu, Li & Wei, Ma & Zhengmin, Song & Zhiwei, Zhou & Wang, Fei, 2020. "Rapid permafrost thaw induced by heat loss from a buried warm-oil pipeline and a new mitigation measure combining seasonal air-cooled embankment and pipe insulation," Energy, Elsevier, vol. 203(C).
    2. Shuangyang Li & Yuanming Lai & Wansheng Pei & Shujuan Zhang & Hua Zhong, 2014. "Moisture–temperature changes and freeze–thaw hazards on a canal in seasonally frozen regions," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 72(2), pages 287-308, June.
    3. Xiaoxiao Luo & Qinguo Ma & Fujun Niu & Wenji Su & He Hu, 2019. "Experimental and Numerical Analyses of Freezing Behavior of an Embankment in Cold Regions," Mathematical Problems in Engineering, Hindawi, vol. 2019, pages 1-13, March.
    4. Pei, Wansheng & Zhang, Mingyi & Lai, Yuanming & Yan, Zhongrui & Li, Shuangyang, 2019. "Evaluation of the ground heat control capacity of a novel air-L-shaped TPCT-ground (ALTG) cooling system in cold regions," Energy, Elsevier, vol. 179(C), pages 655-668.
    5. Zhang, Mingyi & Zhang, Xiyin & Li, Shuangyang & Wu, Daoyong & Pei, Wansheng & Lai, Yuanming, 2015. "Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions," Energy, Elsevier, vol. 93(P1), pages 874-881.
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    1. Chen, Lin & Yu, Wenbing & Zhang, Tianqi & Yi, Xin, 2023. "Asymmetric talik formation beneath the embankment of Qinghai-Tibet Highway triggered by the sunny-shady effect," Energy, Elsevier, vol. 266(C).
    2. Zueter, Ahmad F. & Sasmito, Agus P., 2023. "Cold energy storage as a solution for year-round renewable artificial ground freezing: Case study of the Giant Mine Remediation Project," Renewable Energy, Elsevier, vol. 203(C), pages 664-676.

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