气候变化领域集成服务门户(CCPortal): Evaluation on the stability of expressway embankment combined with L-shaped thermosyphons and insulation boards in warm and ice-rich permafrost regions

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DOI	10.1016/j.trgeo.2021.100633
	Evaluation on the stability of expressway embankment combined with L-shaped thermosyphons and insulation boards in warm and ice-rich permafrost regions
	Luo, Xiaoxiao; Yu, Qihao; Ma, Qinguo; You, Yanhui; Wang, Jinchang; Wang, Shi
通讯作者	Yu, QH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	2214-3912
卷号	30
英文摘要	The embankment construction in permafrost regions changes the energy balance on the surface, resulting in the degradation of the underlying permafrost and instability in the embankment structure. Considering the strict evenness requirement for an expressway, large deformation and instability in expressway embankment cannot be allowed. Accordingly, in this study, a composite measure combined with two-phase closed thermosyphons (TPCTs) and insulation boards is proposed for stabilizing embankments. Moreover, a full-scale experimental expressway embankment is constructed in the Qinghai-Tibet Plateau (QTP) to analyze and investigate the stability of the composite embankment. The experimental results show that the composite measure significantly cools the permafrost under the embankment center and shady slope, and reliably alleviates the embankment deformation and deformation difference. However, the special ground temperature distribution around the TPCTs causes the asymmetric thermal regime and longitudinal cracks in the composite embankment. Additional reinforcement measures should be developed to alleviate the asymmetric thermal regime and prevent such longitudinal cracks. Moreover, timely repair of existing cracks and taking waterproofing measures in advance are favorable for embankment stability.
关键词	2-PHASE CLOSED THERMOSIPHON QINGHAI-TIBET HIGHWAY COOLING PERFORMANCE IN-SITU FIELD EXPERIMENT SETTLEMENT MECHANISM BEHAVIOR RAILWAY MODEL
英文关键词	Composite measure; Deformation behavior; Cooling performance; Longitudinal crack; Permafrost
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Geological
WOS记录号	WOS:000684562800003
来源期刊	TRANSPORTATION 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/254055
作者单位	[Luo, Xiaoxiao; Ma, Qinguo] South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510641, Guangdong, Peoples R China; [Luo, Xiaoxiao; Yu, Qihao; Ma, Qinguo; You, Yanhui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Wang, Jinchang; Wang, Shi] China Railway Qinghai Tibet Grp Co, Xining 810000, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Luo, Xiaoxiao,Yu, Qihao,Ma, Qinguo,et al. Evaluation on the stability of expressway embankment combined with L-shaped thermosyphons and insulation boards in warm and ice-rich permafrost regions[J]. 中国科学院西北生态环境资源研究院,2021,30.
APA	Luo, Xiaoxiao,Yu, Qihao,Ma, Qinguo,You, Yanhui,Wang, Jinchang,&Wang, Shi.(2021).Evaluation on the stability of expressway embankment combined with L-shaped thermosyphons and insulation boards in warm and ice-rich permafrost regions.TRANSPORTATION GEOTECHNICS,30.
MLA	Luo, Xiaoxiao,et al."Evaluation on the stability of expressway embankment combined with L-shaped thermosyphons and insulation boards in warm and ice-rich permafrost regions".TRANSPORTATION GEOTECHNICS 30(2021).