Risk assessment of the crushed rock structure embankments of the Qinghai-Tibet Railway under a warming climate

doi:10.1016/j.coldregions.2022.103509

IR > 土木工程学院

	Risk assessment of the crushed rock structure embankments of the Qinghai-Tibet Railway under a warming climate
	Zhao, Hongting 1,2; Hou, Yandong3 ; Jiang, Guanli 2; Wu, Qingbai 2
	2022-04
发表期刊	Cold Regions Science and Technology
ISSN	0165-232X
卷号	196
摘要	On the Qinghai-Tibet Plateau, transportation infrastructure has been greatly affected by permafrost degradation owing to the increasing air temperature caused by climate change. This study presents a risk assessment model for evaluating the viability of the crushed rock embankment under the scenario of climate warming. The results demonstrate that the service life of an embankment is determined by the time it spends at the lowest or low levels of failure risk. At the failure probability threshold of 0.1, the service lives of open crushed rock-based and U-shaped crushed rock embankments are longer than 100 years, those of closed crushed rock-based embankments are about 66 years, and those of crushed rock revetments are less than 40 years. In essence, the longer an embankment has been in service, the stronger its ability to resist climate warming. Based on these results, U-shaped crushed rock and crushed rock-based embankments are the most capable of offsetting the effects of climate warming on permafrost and should account for a higher proportion of independent embankment structures. The same cannot be said for crushed rock revetments, which should only be used as auxiliary engineering measures. Despite this recommendation, regular maintenance should be conducted on the open system crushed rock embankments because the high winds on the Qinghai-Tibet Plateau fill the embankments with sand, which has a negative effect on the long-term stability of the embankments. © 2022
关键词	Climate change Climate models Numerical methods Permafrost Railroads Risk assessment Risk perception Rocks Climate warming Crushed rock Crushed rock revetment Crushed rock-based embankment Crushed-rock embankments Qinghai Tibet plateau Qinghai-Tibet Railway Risks assessments Rock structures U-shaped
DOI	10.1016/j.coldregions.2022.103509
收录类别	EI ; SCIE
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:000783210000001
出版者	Elsevier B.V.
EI入藏号	20220711625265
EI主题词	Embankments
EI分类号	405 Construction Equipment and Methods ; Surveying ; 443 Meteorology ; 443.1 Atmospheric Properties ; 483 Soil Mechanics and Foundations ; 914.1 Accidents and Accident Prevention ; 921 Mathematics ; 921.6 Numerical Methods
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/157893
专题	土木工程学院
通讯作者	Wu, Qingbai
作者单位	1.Jiaxing Nanhu Univ, Coll Architectural Engn, Jiaxing, Peoples R China; 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; 3.Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Gan, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Hongting,Hou, Yandong,Jiang, Guanli,et al. Risk assessment of the crushed rock structure embankments of the Qinghai-Tibet Railway under a warming climate[J]. Cold Regions Science and Technology,2022,196.
APA	Zhao, Hongting,Hou, Yandong,Jiang, Guanli,&Wu, Qingbai.(2022).Risk assessment of the crushed rock structure embankments of the Qinghai-Tibet Railway under a warming climate.Cold Regions Science and Technology,196.
MLA	Zhao, Hongting,et al."Risk assessment of the crushed rock structure embankments of the Qinghai-Tibet Railway under a warming climate".Cold Regions Science and Technology 196(2022).