气候变化领域集成服务门户(CCPortal): Thermo-seismic characteristics of a crushed-rock interlayer embankment on a permafrost slope

CCPortal

DOI	10.1016/j.coldregions.2018.03.019
	Thermo-seismic characteristics of a crushed-rock interlayer embankment on a permafrost slope
	Li, Shuangyang; Zhang, Mingyi; Pei, Wansheng; Lai, Yuanming; Yu, Wenbing
发表日期	2018
ISSN	0165-232X
EISSN	1872-7441
起始页码	249
结束页码	259
卷号	151
英文摘要	Crushed rock is a highly porous medium widely used to cool embankments in permafrost regions. The thermal transfer of a crushed-rock embankment (CRE) was fully investigated by experimental and numerical methods. However, the CRE's mechanical process, especially under dynamic loading, is a key factor for its safe operation but has been ignored. To study the dynamic characteristics of the CRE, we proposed a thermo-dynamic coupled model for the CRE, selected a crushed-rock interlayer embankment (CRIE) on a permafrost slope, and conducted a series of numerical computations over four seasons in its 20th service year. The CRIE temperature changed seasonally, causing seasonal differences in mechanical behaviors and seismic responses. By comparing the acceleration, velocity, displacement and pore water pressure responses of the CRIE, the seismic damage mechanism of the CRIE is analyzed and the time at which the earthquake-induced damage of the CRIE is the heaviest among these four seasons is identified. The numerical model and results in the study can provide theoretical support to the construction and maintenance of the CRIE as well as a reference for further study of the CRE in permafrost regions.
英文关键词	Crushed-rock interlayer embankment; Thermo-dynamic model; Seismic response; Seasonal difference; Permafrost region
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	NATURAL-CONVECTION
WOS记录号	WOS:000432682200025
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239468
作者单位	[Li, Shuangyang; Zhang, Mingyi; Pei, Wansheng; Lai, Yuanming; Yu, Wenbing] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuangyang,Zhang, Mingyi,Pei, Wansheng,et al. Thermo-seismic characteristics of a crushed-rock interlayer embankment on a permafrost slope[J],2018,151.
APA	Li, Shuangyang,Zhang, Mingyi,Pei, Wansheng,Lai, Yuanming,&Yu, Wenbing.(2018).Thermo-seismic characteristics of a crushed-rock interlayer embankment on a permafrost slope.COLD REGIONS SCIENCE AND TECHNOLOGY,151.
MLA	Li, Shuangyang,et al."Thermo-seismic characteristics of a crushed-rock interlayer embankment on a permafrost slope".COLD REGIONS SCIENCE AND TECHNOLOGY 151(2018).