气候变化领域集成服务门户(CCPortal): Frost Jacking Characteristics of Transmission Tower Pile Foundations with and without Thermosyphons in Permafrost Regions of Qinghai-Tibet Plateau

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DOI	10.1061/(ASCE)CR.1943-5495.0000246
	Frost Jacking Characteristics of Transmission Tower Pile Foundations with and without Thermosyphons in Permafrost Regions of Qinghai-Tibet Plateau
	Zhou, Yalong; Wang, Xu; Niu, Fujun; He, Fei; Guo, Chunxiang; Liu, Deren; Jiang, Daijun
通讯作者	Wang, X (通讯作者)，Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China.
发表日期	2021
ISSN	0887-381X
EISSN	1943-5495
卷号	35 期号:2
英文摘要	Frost jacking of electricity transmission tower (ETT) pile foundations in permafrost regions of the Qinghai-Tibet Plateau is becoming increasingly serious. This study investigated the effects of thermosyphons on the frost jacking characteristics of such pile foundations. Field tests of pile foundations with and without thermosyphons were carried out in the Wonkhu-Budongquan section of the Qinghai-Tibet Plateau. A three-dimensional finite-element model was established to analyze the effectiveness of thermosyphons, ground temperature distributions, and jacking displacements and force characteristics of ETT pile foundations. The results showed that the power of thermosyphons decreases yearly within 30 years. The thermosyphons can effectively increase the cold reserves of the permafrost and reduce the soil temperature; the soil temperature around the pile and the depth of thaw is the lowest in the fifth year, and this will increase the top of permafrost by 48 cm in the thirtieth year. Thermosyphons can effectively increase the adfreezing force of the pile side below the active layer and reduce the frost jacking displacement, thus alleviating frost jacking damage to ETT pile foundations.
关键词	2-PHASE CLOSED THERMOSIPHON EMBANKMENT INSULATION PROVINCE SOILS
英文关键词	Permafrost; Transmission tower pile foundation; Thermosyphons; Cooling effect; Frost jacking
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS记录号	WOS:000672222700009
来源期刊	JOURNAL OF COLD REGIONS ENGINEERING
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/254370
作者单位	[Zhou, Yalong; Wang, Xu; He, Fei; Guo, Chunxiang; Liu, Deren; Jiang, Daijun] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China; [Niu, Fujun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yalong,Wang, Xu,Niu, Fujun,et al. Frost Jacking Characteristics of Transmission Tower Pile Foundations with and without Thermosyphons in Permafrost Regions of Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2021,35(2).
APA	Zhou, Yalong.,Wang, Xu.,Niu, Fujun.,He, Fei.,Guo, Chunxiang.,...&Jiang, Daijun.(2021).Frost Jacking Characteristics of Transmission Tower Pile Foundations with and without Thermosyphons in Permafrost Regions of Qinghai-Tibet Plateau.JOURNAL OF COLD REGIONS ENGINEERING,35(2).
MLA	Zhou, Yalong,et al."Frost Jacking Characteristics of Transmission Tower Pile Foundations with and without Thermosyphons in Permafrost Regions of Qinghai-Tibet Plateau".JOURNAL OF COLD REGIONS ENGINEERING 35.2(2021).