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	Crack damage investigation of paved highway embankment in the Tibetan Plateau permafrost environments
	Liu, Weibo1; Yu, Wenbing1,2; Hu, Da3; Lu, Yan1; Chen, Lin4; Yi, Xin5; Han, Fenglei2
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2019-07-01
卷号	163页码:78-86
关键词	Crack damage Paved embankment Permafrost Thermal condition Thaw settlement
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2019.05.003
通讯作者	Yu, Wenbing(yuwb@lzb.ac.cn)
英文摘要	Field surveys focusing on the crack damages in paved embankment of the Qinghai-Tibet Highway were carried out at 17 sections. Some severe cracks were found in the road embankment constructed on the permafrost ground affecting the smooth operation of the highway. Road orientation, thaw settlement, crack width and length were measured at the typical crack sections. Besides, embankment slope surface temperatures were monitored at two road sections, and the temperature difference as high as 10 degrees C was observed in the cold winter time. Three scenarios were employed in the numerical modeling to assess the impact of climate warming, embankment slope surface temperature, and embankment itself on the underlying permafrost evolution process. Thereafter, a method was introduced to obtain the thaw settlement of the road embankment according to the simulated thawing front depth. The results indicate that the thaw settlement difference across the road embankment width is the main cause results in the crack damages. This uneven thaw settlement can be amplified due to the presence of the original ground slope. Additionally, climate warming intensified the underlying permafrost degradation and accelerated the thawing front penetrating into the subgrade permafrost. In summary, road orientation, original ground slope, climate warming, and underlying permafrost type are major but not the sole causes for the crack damages of the paved embankment in the Tibetan permafrost environments. It is recommended that steep slope and ice-rich permafrost ground should be avoided in the early design of the highway embankment.
收录类别	SCI
WOS关键词	STABILITY ANALYSIS ; ROAD EMBANKMENT ; THERMAL REGIME ; DEGRADATION ; REGIONS ; IMPACTS
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000468873900009
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555457
专题	寒区旱区环境与工程研究所
通讯作者	Yu, Wenbing
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Gansu, Peoples R China 2.Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing, Peoples R China 3.Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN USA 4.Univ Montreal, Geog Dept, 520,Ch Cote Ste Catherine, Montreal, PQ H2V 2B8, Canada 5.Jiangxi Univ Sci & Technol, Sch Architecture & Surveying & Mapping Engn, Ganzhou, Peoples R China
推荐引用方式 GB/T 7714	Liu, Weibo,Yu, Wenbing,Hu, Da,et al. Crack damage investigation of paved highway embankment in the Tibetan Plateau permafrost environments[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2019,163:78-86.
APA	Liu, Weibo.,Yu, Wenbing.,Hu, Da.,Lu, Yan.,Chen, Lin.,...&Han, Fenglei.(2019).Crack damage investigation of paved highway embankment in the Tibetan Plateau permafrost environments.COLD REGIONS SCIENCE AND TECHNOLOGY,163,78-86.
MLA	Liu, Weibo,et al."Crack damage investigation of paved highway embankment in the Tibetan Plateau permafrost environments".COLD REGIONS SCIENCE AND TECHNOLOGY 163(2019):78-86.

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