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- W619520555 abstract "In Saskatchewan, rationalized transportation will probably result in rail branchlines to be abandoned resulting in more Saskatchewan resources (grain, timber, oil, etc) to be moved by truck over the Saskatchewan rural road infrastructure. As a result, Saskatchewan Highways and Transportation (SHT) must implement road management strategies that optimize the use of the Saskatchewan rural road infrastructure to accommodate these changing traffic demands, while at the same time, ensure the road infrastructure is preserved under the increased traffic loading. To do this, efficient and equitable heavy vehicle weight regulations under a broad spectrum of changing conditions must be implemented. This will require SHT to specify heavy vehicle weight restrictions based on accurate quantification of the impact different heavy vehicles have on different road structures under varying climates and conditions with adequate reliability. Because quantifying road performance as a function of varying conditions is extremely complex and highly interrelated with several factors, mechanistic based road analysis methods are required. The specific objectives of this research are: 1. to identify factors to be considered when quantifying road impacts basedon mechanics and 2. to illustrate the capabilities of three mechanistic road performance analysis software programs through simple examples. The following scope was employed to satisfy the objectives of this research: 1.The Saskatchewan road infrastructure was categorized into four primary road structure types: 1) structural pavement; 2) thin membrane surfaced road(TMS); 3) gravel/grid road; and 4) farm access/municipal road. 2. The effect changing climatic seasons has on road structures was incorporated into the analysis (i.e. summer-fall dry conditions, winter frozen conditions and spring thawing conditions). 3. Different heavy vehicle configurationscommonly found in Saskatchewan were considered. 4. Variations in axle group weights were employed in the analysis (50%, 100% and 150% of maximum GVW). 5. The effect of varied tire pressures (i.e. 680 kpa-100 psi to 407 kpa-60psi) on thawing low volume roads was analyzed. 6. Three industry standard road structure analysis software programs were compared in the analysis: ELSYM5 (linear elastic all layers), KENLAYER (visco-elastic asphalt concrete layer and linear elastic all other layers) and MICHPAVE (non-linear 2-D finite element-all layers). For the covering abstract of this conference see IRRD number 872753. (A)" @default.
- W619520555 created "2016-06-24" @default.
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- W619520555 date "1996-01-01" @default.
- W619520555 modified "2023-09-26" @default.
- W619520555 title "NUMERICAL LOAD IMPACT ANALYSIS OF TYPICAL SASKATCHEWAN ROADS" @default.
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