气候变化领域集成服务门户(CCPortal): Lateral deformation of expressway embankment on the Qinghai-Tibet Plateau: field observation and theoretical model

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DOI	10.1080/10298436.2023.2171036
	Lateral deformation of expressway embankment on the Qinghai-Tibet Plateau: field observation and theoretical model
	Shen, Mingde; Zhou, Zhiwei; Ma, Wei; Xu, Yuezhen
发表日期	2023
ISSN	1029-8436
EISSN	1477-268X
卷号	24 期号:1
英文摘要	This study discusses a two-year-long field observation of the lateral deformation and ground temperature of an experimental expressway embankment on the Qinghai-Tibet Plateau. The distribution features and evolution process of lateral deformation were obtained and analysed. The results showed that the maximum lateral deformation over 2 years was higher than 14 mm and continues to increase. Large lateral deformations occur only at two depths and can be disregarded at other depths. In layers with large lateral deformation, the cumulative lateral deformation grows periodically during the thawing period and decreases during the freezing period. The distribution and evolution features of the monitored lateral deformation indicated that it was caused by thermal stress, and the lateral deformation may be identified as creep-springback deformation under variable thermal stress conditions. Finally, a creep model under a periodic thermal load was established to verify the effectiveness of the proposed lateral deformation mechanism in explaining the lateral deformation behaviour of embankments. The calculations showed that the proposed mechanism can explain the crucial features and accumulation of lateral deformation. The results and analyses reported in this study can provide new references for research on road deformation and disease development.
关键词	Embankment deformation on-site monitoring lateral deformation mechanism creep model permafrost engineering
英文关键词	PERMAFROST REGIONS; SETTLEMENT; HIGHWAY; SOIL; CONSOLIDATION; FOUNDATIONS; STABILITY; BEHAVIOR; BENEATH; CLAYS
WOS研究方向	Construction & Building Technology ; Engineering, Civil ; Materials Science, Characterization & Testing
WOS记录号	WOS:000922135300001
来源期刊	INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283119
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Shen, Mingde,Zhou, Zhiwei,Ma, Wei,et al. Lateral deformation of expressway embankment on the Qinghai-Tibet Plateau: field observation and theoretical model[J],2023,24(1).
APA	Shen, Mingde,Zhou, Zhiwei,Ma, Wei,&Xu, Yuezhen.(2023).Lateral deformation of expressway embankment on the Qinghai-Tibet Plateau: field observation and theoretical model.INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING,24(1).
MLA	Shen, Mingde,et al."Lateral deformation of expressway embankment on the Qinghai-Tibet Plateau: field observation and theoretical model".INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING 24.1(2023).