气候变化领域集成服务门户(CCPortal): Express highway embankment distress and occurring probability in permafrost regions on the Qinghai-Tibet Plateau

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DOI	10.1016/j.trgeo.2023.101069
	Express highway embankment distress and occurring probability in permafrost regions on the Qinghai-Tibet Plateau
	Huang, Yunhui; Niu, Fujun; Chen, Jianbing; He, Peifeng; Yuan, Kun; Su, Wenji
发表日期	2023
ISSN	2214-3912
卷号	42
英文摘要	Under the influence of climate warming and increasing human activities, permafrost degradation has become severe, impacting the stability of local infrastructure. This is particularly evident in the Qinghai-Tibet Plateau, where the fragile permafrost environment, high ice content and high ground temperature exacerbate the situation. The Gonghe-Yushu Express Highway (GYE), a newly constructed express highway on the plateau, was completed and opened to traffic five years ago. However, even for such a new express highway, engineering distresses have occurred. In this study, we employed ground penetrating radar, unmanned aerial vehicle, and manual investigations to examine the types and distribution characteristics of embankment distresses, analyzed the impacts of different factors, and established a probability prediction model for the occurrence of embankment distresses. Our findings revealed that the main types of embankment distresses on the GYE are wavy pavement, uneven settlement, and cracks, with the highest proportion of distresses in waterlogged sections on plateaus and basins. Among the nine factors affecting embankment distresses considered in this study, permafrost ice content and soil type have relatively larger impacts. Compared to logistic regression and support vector machines, the random forest model demonstrates higher accuracy in predicting embankment distress occurrence in permafrost road sections, with a prediction accuracy rate of 86.4%. Based on the random forest model, the permafrost road sections of the GYE are divided into five levels according to the probability of embankment distress occurrence: slight, low, moderate, high, and extremely high, with corresponding embankment lengths of 264, 61, 41, 34, and 29 km, respectively.
关键词	Qinghai-Tibet Plateau Permafrost Gonghe-Yushu Express Highway Embankment distress Random Forest model
英文关键词	ROADBED COOLING APPROACH; CRUSHED-ROCK EMBANKMENT; ENGINEERING CORRIDOR; RAILWAY EMBANKMENT; THERMAL REGIME; LOCAL FACTORS; TEMPERATURE; DEGRADATION; STABILITY; CLIMATE
WOS研究方向	Engineering, Civil ; Engineering, Geological
WOS记录号	WOS:001053903700001
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/282825
作者单位	South China University of Technology; South China University of Technology
推荐引用方式 GB/T 7714	Huang, Yunhui,Niu, Fujun,Chen, Jianbing,et al. Express highway embankment distress and occurring probability in permafrost regions on the Qinghai-Tibet Plateau[J],2023,42.
APA	Huang, Yunhui,Niu, Fujun,Chen, Jianbing,He, Peifeng,Yuan, Kun,&Su, Wenji.(2023).Express highway embankment distress and occurring probability in permafrost regions on the Qinghai-Tibet Plateau.TRANSPORTATION GEOTECHNICS,42.
MLA	Huang, Yunhui,et al."Express highway embankment distress and occurring probability in permafrost regions on the Qinghai-Tibet Plateau".TRANSPORTATION GEOTECHNICS 42(2023).