气候变化领域集成服务门户(CCPortal): Application of a concrete thermal pile in cooling the warming permafrost under climate change

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DOI	10.1016/j.accre.2023.09.002
	Application of a concrete thermal pile in cooling the warming permafrost under climate change
	Shang, Yun-Hu; Niu, Fu -Jun; Li, Guo-Yu; Fang, Jian-Hong; Gao, Ze-Yong
发表日期	2024
ISSN	1674-9278
起始页码	15
结束页码	1
卷号	15 期号:1
英文摘要	Permafrost degradation caused by climate warming is posing a serious threat to the stability of cast-in-place pile foundations in warm permafrost regions. Ambient cold energy can be effectively utilized by two-phase closed thermosyphons (TPCTs) to cool the permafrost. Therefore, we installed TPCTs in a cast-in-place pile foundation to create a unique structure called a thermal pile, which effectively utilizes the TPCTs to regulate ground temperature. And we conducted a case study and numerical simulation to exhibit the cooling performance, and optimize the structure of the thermal pile. The purpose of this study is to promote the application of thermal piles in unstable permafrost regions. Based on the findings, the thermal pile operated for approximately 53% of the entire year and effectively reduced the deep ground temperature at a rate of at least -0.1 degrees C per year. Additionally, it successfully raised the permafrost table that is 0.35 m shallower than the natural ground level. These characteristics prove highly beneficial in mitigating the adverse effects of permafrost degradation and enhancing infrastructure safety. Expanding the length of the condenser section and the diameter of the TPCT in a suitable manner can effectively enhance the cooling capability of the thermal pile and ensure the long-term mechanical stability of the pile foundation even under climate warming.
英文关键词	Heat transfer; Cold energy; Warm permafrost; Two-phase closed thermosyphons; Cast-in-place pile foundation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001189173100001
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298776
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Shang, Yun-Hu,Niu, Fu -Jun,Li, Guo-Yu,et al. Application of a concrete thermal pile in cooling the warming permafrost under climate change[J],2024,15(1).
APA	Shang, Yun-Hu,Niu, Fu -Jun,Li, Guo-Yu,Fang, Jian-Hong,&Gao, Ze-Yong.(2024).Application of a concrete thermal pile in cooling the warming permafrost under climate change.ADVANCES IN CLIMATE CHANGE RESEARCH,15(1).
MLA	Shang, Yun-Hu,et al."Application of a concrete thermal pile in cooling the warming permafrost under climate change".ADVANCES IN CLIMATE CHANGE RESEARCH 15.1(2024).