Segregation Potential from a Highway Embankment on Thawed Permafrost

Batenipour, Hamid; Alfaro, Marolo C.; Graham, J.; Kalynuk, Ken

doi:10.1061/9780784412473.012

Cited by 3 publications

References 8 publications

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Ground temperature and deformation analysis for an expressway embankment in warm permafrost regions of the Tibet plateau

Liu

Tai

Fang

2019

Permafrost & Periglacial

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The physical and mechanical processes relating to infrastructure are strongly intertwined in subgrades of road or railway in warm permafrost regions, where the evolution of these processes may influence the functionality of infrastructure. Thus, this study analyzed the embankment thermal regime and thaw settlement behavior based on monitored data for three sections of the newly constructed Gonghe–Yushu expressway (GYE) in a warm permafrost area of Tibet. The efficiencies of crushed rock, ventilated, and insulated embankments in maintaining permafrost temperature were evaluated in relation to the permafrost table (PT) and the annual warming rate of the permafrost. The deformation characteristics of three embankments for different soil layers are summarized, along with analysis of heat balance. The results show that: (a) the permafrost thaw rate has a positive linear correlation with mean annual ground temperature; (b) the permafrost displays a warming trend regardless of whether PT increases or decreases; (c) the total deformation of a given embankment shows a tendency toward settlement; and (d) subgrade peak thaw settlement occurs later than its maximum seasonal thaw depth.

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Ground temperature and deformation analysis for an expressway embankment in warm permafrost regions of the Tibet plateau

Liu

Tai

Fang

2019

Permafrost & Periglacial

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Segregation Potential from a Highway Embankment on Thawed Permafrost

Batenipour¹,

Alfaro²,

Graham³

et al. 2012

Cold Regions Engineering 2012

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Deformations and ground temperatures at a road embankment in northern Canada

et al. 2014

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The paper examines the behaviour of a highway embankment in an area of discontinuous permafrost about 18 km northwest of Thompson, Manitoba. Frequent maintenance has been required. Research involved site investigation, laboratory testing, installing instruments, data collection, and numerical modeling. The paper reports data from almost 3 years of observation. Measurements of ground temperatures suggest that formerly ice-rich foundation soil has thawed under the toe and side-slope. Approximate values of segregation potential have been back-calculated from observations of settlements and temperatures. Results provide insight into the nature and cause of deformations of the embankment.Résumé : Cet article présente le comportement d'un remblai d'autoroute situé dans une zone de pergélisol discontinu, environ 18 km au nord-ouest de Thompson, Manitoba. Cette zone nécessite de la maintenance sur une base régulière. Les travaux de recherche comprennent des investigations de site, des essais en laboratoire, l'installation d'instruments, la collecte de données, et des modélisations numériques. Cet article rapporte les données récoltées pendant près de 3 années d'observation. Les mesures de la température du sol suggèrent que le sol de fondation initialement riche en glace a fondu sous la base et la pente de côté. Des valeurs approximatives du potentiel de ségrégation ont été rétro-calculées à partir des tassements et températures observés. Les résultats donnent des informations sur la nature et la cause des déformations du remblai. [Traduit par la Rédaction]

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Segregation Potential from a Highway Embankment on Thawed Permafrost

Cited by 3 publications

References 8 publications

Ground temperature and deformation analysis for an expressway embankment in warm permafrost regions of the Tibet plateau

Ground temperature and deformation analysis for an expressway embankment in warm permafrost regions of the Tibet plateau

Segregation Potential from a Highway Embankment on Thawed Permafrost

Deformations and ground temperatures at a road embankment in northern Canada

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