气候变化领域集成服务门户(CCPortal): Countermeasures combined with thermosyphons against the thermal instability of high-grade highways in permafrost regions

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DOI	10.1016/j.ijheatmasstransfer.2019.119047
	Countermeasures combined with thermosyphons against the thermal instability of high-grade highways in permafrost regions
	Yan, Zhongrui; Zhang, Mingyi; Lai, Yuanming; Pei, Wansheng; Luo, Tao; Yu, Fan; Yang, Sheng
发表日期	2020
ISSN	0017-9310
EISSN	1879-2189
卷号	153
英文摘要	Permafrost degradation caused by climate warming and human activities would result in the thermal instability of embankments in permafrost regions, which would increase the maintenance cost. Two-phase closed thermosyphon (TPCT) is a widely-accepted green countermeasure against the problem in permafrost regions. However, the combination of TPCT with other countermeasures is usually proposed when it comes to a high-grade highway with a wide pavement. In order to explore the ideal combination, four combinations are compared by the instrumented physical embankment models: 1) inclined TPCT and insulation; 2) inclined TPCT, insulation and crushed-rock revetment; 3) L-shaped TPCT and insulation and 4) L-shaped TPCT, insulation and crushed-rock revetment. Under this experimental condition, the experimental results show that the TPCTs can effectively cool down the embankment center, the crushed-rock revetments can keep the soil slope and slope toe frozen during the whole freeze-thaw period after the 5th cycle, and the insulation can effectively prevent heat from entering into the embankment in warm seasons. After a thorough comparison of the thermal distribution and heat flux during seven freeze-thaw cycles, the embankment combined with L-shaped TPCT, insulation and crushed-rock revetment is proved to be the best way to keep the thermal stability of the wide-paved embankment. The results have potential to use for the future optimal construction against the thermal instability of high-grade highways in permafrost regions. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Embankment model; Two-phase closed thermosyphon; Thermal stability; High-grade highway; Permafrost regions
语种	英语
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS关键词	2-PHASE CLOSED THERMOSIPHON ; HEAT-TRANSFER CHARACTERISTICS ; COOLING PERFORMANCE ; FILLING RATIO ; EMBANKMENTS ; INSULATION ; PROTECTION ; PAVEMENT ; PLATEAU ; SECTION
WOS记录号	WOS:000530718200025
来源期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239572
作者单位	[Yan, Zhongrui; Zhang, Mingyi; Lai, Yuanming; Pei, Wansheng; Yu, Fan; Yang, Sheng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Yan, Zhongrui; Yang, Sheng] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Luo, Tao] Xijing Univ, Shaanxi Key Lab Safety & Durabil Concrete Struct, Xian 710123, Peoples R China
推荐引用方式 GB/T 7714	Yan, Zhongrui,Zhang, Mingyi,Lai, Yuanming,et al. Countermeasures combined with thermosyphons against the thermal instability of high-grade highways in permafrost regions[J]. 中国科学院西北生态环境资源研究院,2020,153.
APA	Yan, Zhongrui.,Zhang, Mingyi.,Lai, Yuanming.,Pei, Wansheng.,Luo, Tao.,...&Yang, Sheng.(2020).Countermeasures combined with thermosyphons against the thermal instability of high-grade highways in permafrost regions.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,153.
MLA	Yan, Zhongrui,et al."Countermeasures combined with thermosyphons against the thermal instability of high-grade highways in permafrost regions".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 153(2020).