Design of through-grade culverts to mitigate road roughness (case study: PTH-68)
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Date
2018
Authors
Moussa, Ahmed
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Abstract
Roadways over culverts experience severe roughness due to the differential frost heave and thaw settlement in cold regions. Five instrumented culvert sites with different designs to mitigate road roughness were constructed and monitored for two years in Manitoba, Canada. The sites were different in the culvert diameter, type of backfill material, depth of cover, geosynthetics, and thermal insulation. The objectives of the study was to provide design of culverts in cold regions to mitigate road roughness, and develop a numerical model for geotechnical engineering applications in cold regions. A 2-D thermal numerical model was established, validated, and applied on geotechnical engineering applications in cold regions. The study concluded that thermal insulation and geosynthetics had noticeable effect on mitigating road roughness over culverts, and different placements of thermal insulation at the vicinity of culverts could be used to reduce the severity of several geotechnical problems in cold regions.
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Keywords
Culvert, frost penetration, case study, heat transfer, phase change, numerical modeling
Citation
Moussa, A., Kavanagh, L., Shalaby, A., (2018). “Evaluating pavement surface temperature prediction models in determining soil thermal profile below pavement surface in cold regions”. Transportation Research Board 97th Annual meeting, Washington D.C. (No. 18-05078).
Moussa, A., Shalaby, A., Kavanagh, L., Maghoul, P. (2018). “Ground thermal profile and frost depth in the vicinity of through-grade culverts”. Geohazards 7 Conference, Canmore, AB.
Kavanagh, L., Shalaby, A., Moussa, A., & Sparrow, S. (2017). “Analysis of measured strains in geotextile-reinforced clay backfill over through-grade culverts in cold climates”. Transportation Research Board 96th Annual meeting, Washington D.C. (No. 17-06559).
Kavanagh, L., Moussa, A., Shalaby, A. (2018). Recommendations for Innovative Options for Culvert Installation to Mitigate Bumps and Depressions at Through-Grade Culverts in Manitoba: Demonstration Project PTH 68. Submitted to Manitoba Department of Infrastructure. Technical Report.
Moussa, A., Shalaby, A., Kavanagh, L., Maghoul, P. (2018). “Ground thermal profile and frost depth in the vicinity of through-grade culverts”. Geohazards 7 Conference, Canmore, AB.
Kavanagh, L., Shalaby, A., Moussa, A., & Sparrow, S. (2017). “Analysis of measured strains in geotextile-reinforced clay backfill over through-grade culverts in cold climates”. Transportation Research Board 96th Annual meeting, Washington D.C. (No. 17-06559).
Kavanagh, L., Moussa, A., Shalaby, A. (2018). Recommendations for Innovative Options for Culvert Installation to Mitigate Bumps and Depressions at Through-Grade Culverts in Manitoba: Demonstration Project PTH 68. Submitted to Manitoba Department of Infrastructure. Technical Report.