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dc.contributor.supervisor Alfaro, Marolo (Civil Engineering) Graham, Jim (Civil Engineering) en_US
dc.contributor.author Flynn, David
dc.date.accessioned 2015-04-01T19:26:01Z
dc.date.available 2015-04-01T19:26:01Z
dc.date.issued 2015-04-01
dc.identifier.uri http://hdl.handle.net/1993/30336
dc.description.abstract There is a growing need to improve the understanding of the behaviour of infrastructure in permafrost regions. Permafrost affects nearly half of the land surface in Canada, especially in the north. Further development of natural resources in northern Canada will provide socio-economic benefits to the region and its residents. Linear infrastructure, such as highways, is an important part of that development. The integrity of infrastructure in northern regions is negatively impacted by thawing and degradation of the underlying permafrost initiated by changes in both air and ground temperatures. Subsequent deformations due to settlement and lateral spreading can lead to potentially hazardous driving on highways. The author’s research focused on a section of highway embankment on Provincial Road (PR) 391 located 18 km north of Thompson, Manitoba. The purpose of the research was to further understanding of the thermal and deformation behaviour of an embankment subjected to degrading permafrost conditions. The author’s research consisted of laboratory testing, instrumentation installation, data monitoring, and numerical modelling. Laboratory tests on four-inch (101.6 mm) diameter Shelby tube samples characterized the soil at the site. Data were collected remotely via satellite, and included ground temperatures, pore water pressures, and displacements both laterally and vertically. Ground temperatures indicated a frost bulb, a region of frozen ground, under the embankment. Thermal models using TEMP/W simulated the current ground thermal regime and projections of future thermal behaviour of the embankment. Deformation numerical models using SIGMA/W incorporated changes in the size of the frost bulb over a freeze-thaw cycle to simulate the deformation behaviour of the embankment. The numerical models were compared with the collected data. en_US
dc.subject permafrost en_US
dc.subject thermal numerical model en_US
dc.subject deformation numerical model en_US
dc.subject instrumentation en_US
dc.subject monitoring en_US
dc.subject highway embankment en_US
dc.title Field and numerical studies of an instrumented highway embankment in degrading permafrost en_US
dc.degree.discipline Civil Engineering en_US
dc.contributor.examiningcommittee Arenson, Lukas (Civil Engineering) Tachie, Mark (Mechanical Engineering) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note May 2015 en_US


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