气候变化领域集成服务门户(CCPortal): Thermo-seismic performances of a unilateral two-phase closed thermosyphon (TPCT) embankment in earthquake-prone permafrost regions

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DOI	10.1016/j.trgeo.2020.100456
	Thermo-seismic performances of a unilateral two-phase closed thermosyphon (TPCT) embankment in earthquake-prone permafrost regions
	Li, Shuangyang; Pei, Wansheng; Wang, Chong; Lai, Yuanming; Shi, Lianghong
发表日期	2021
ISSN	2214-3912
卷号	27
英文摘要	As a device for efficient heat transfer working without external power supply or control instrumentation, a two-phase closed thermosyphon (TPCT) is an engineering instrument for protecting permafrost under embankments from thawing. The process and mechanism of heat transfer in TPCT embankments were well investigated using experimental and theoretical methods. However, the mechanical performance of TPCT embankments is the most key factor controlling safe operation, but it is sometimes ignored. In particular, there are many TPCT embankments located in the earthquake-prone Qinghai-Tibet Plateau (QTP), and their seismic performances dominate their safe operation. To study the seismic characteristic of the TPCT embankment, we established a thermodynamic model for TPCT embankments and selected a unilateral TPCT embankment to simulate the seismic responses over four representative seasons after 10 years in service. The numerical results show the TPCT embankment has lower temperature distributions compared with that of the embankment without TPCTs, and its temperatures exhibit seasonal differences, resulting in differential seismic responses. In general, throughout the year, the seismic responses of the TPCT embankment are more intensive on October 15 and less intensive on January 15. Moreover, distinct sliding planes appear in the TPCT embankment. Therefore, additional reinforcement measurements should be designed to improve the seismic behavior of the TPCT embankment according to the thermal regimes and seismic response characteristics. Meanwhile, this study is a theoretical reference for the construction, maintenance and further study of other TPCT embankments in permafrost regions.
英文关键词	Two-phase dosed thermosyphon; Embankment; Thermo-seismic performance; Time history; Residual deformation; Permafrost region
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Geological
WOS记录号	WOS:000621106700006
来源期刊	TRANSPORTATION GEOTECHNICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239556
作者单位	[Li, Shuangyang; Pei, Wansheng; Lai, Yuanming; Shi, Lianghong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Wang, Chong] Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuangyang,Pei, Wansheng,Wang, Chong,et al. Thermo-seismic performances of a unilateral two-phase closed thermosyphon (TPCT) embankment in earthquake-prone permafrost regions[J],2021,27.
APA	Li, Shuangyang,Pei, Wansheng,Wang, Chong,Lai, Yuanming,&Shi, Lianghong.(2021).Thermo-seismic performances of a unilateral two-phase closed thermosyphon (TPCT) embankment in earthquake-prone permafrost regions.TRANSPORTATION GEOTECHNICS,27.
MLA	Li, Shuangyang,et al."Thermo-seismic performances of a unilateral two-phase closed thermosyphon (TPCT) embankment in earthquake-prone permafrost regions".TRANSPORTATION GEOTECHNICS 27(2021).