气候变化领域集成服务门户(CCPortal): Experimental and numerical investigation on thermal-moisture-mechanical behaviors on a new anti-frost cutting bed of high-speed railway in deep seasonally frozen ground regions under extreme climate

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DOI	10.1016/j.compgeo.2021.104251
	Experimental and numerical investigation on thermal-moisture-mechanical behaviors on a new anti-frost cutting bed of high-speed railway in deep seasonally frozen ground regions under extreme climate
	Tai, Bowen; Yue, Zurun; Qi, Shouchen; Wang, Pengcheng
通讯作者	Yue, ZR (通讯作者)，Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China.
发表日期	2021
ISSN	0266-352X
EISSN	1873-7633
卷号	136
英文摘要	Cutting damages caused by frost action seriously threaten the safe operation of railways in cold regions. This paper uses worth of monitoring data to examine the temperature, unfrozen water, and deformation behaviors of a new High-speed Railway (HSR) anti-frost cutting bed in a deep seasonally frozen ground region. A frost numerical model is established to study the effectiveness of the anti-frost cutting bed under extreme weather conditions. The influence of snow cover on the soil water-heat state and the causes of slope instability in cold regions are also discussed. Results demonstrate that the frost depth of the cutting top is less than that of the cutting center and that the sensitivity of different soil layers' unfrozen water content to ground temperature changes are delayed in turn. Frost heave mainly occurs in the initial freezing and freeze-thaw alternating periods at the ground surface. Greater infiltration of rainwater or snow melt will lead to a greater peak frost value. Slopes in frozen soil regions are thus prone to instability and collapse at the freeze-thaw interface. These findings will help to improve understandings of thermal-moisture-mechanical behaviors for cutting beds with spatiotemporally in deep seasonally frozen ground regions, thereby potentially improving HSR operation quality.
关键词	SNOW COVER PERMAFROST REGIONS UNSATURATED SOILS HEAVE EMBANKMENTS FREEZE TEMPERATURES SUBGRADE THAW
英文关键词	Thermal-moisture-mechanical behavior; Anti-frost cutting bed; Frost depth; Frost heave; Deep seasonally frozen ground
语种	英语
WOS研究方向	Computer Science ; Engineering ; Geology
WOS类目	Computer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000705914900007
来源期刊	COMPUTERS AND GEOTECHNICS
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/254833
作者单位	[Tai, Bowen] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Yue, Zurun] Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China; [Qi, Shouchen] Fourth Engn Co Ltd, China Railway Bur 14, Jinan 250000, Peoples R China; [Wang, Pengcheng] China Acad Railway Sci Corp Ltd, Railway Engn Res Inst, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Tai, Bowen,Yue, Zurun,Qi, Shouchen,et al. Experimental and numerical investigation on thermal-moisture-mechanical behaviors on a new anti-frost cutting bed of high-speed railway in deep seasonally frozen ground regions under extreme climate[J]. 中国科学院西北生态环境资源研究院,2021,136.
APA	Tai, Bowen,Yue, Zurun,Qi, Shouchen,&Wang, Pengcheng.(2021).Experimental and numerical investigation on thermal-moisture-mechanical behaviors on a new anti-frost cutting bed of high-speed railway in deep seasonally frozen ground regions under extreme climate.COMPUTERS AND GEOTECHNICS,136.
MLA	Tai, Bowen,et al."Experimental and numerical investigation on thermal-moisture-mechanical behaviors on a new anti-frost cutting bed of high-speed railway in deep seasonally frozen ground regions under extreme climate".COMPUTERS AND GEOTECHNICS 136(2021).