![]() ![]() 1288 Transportation Research Board of National Academics, Washington, D.C., USA, pp. (1990), "Live load distribution on concrete box culverts", Transportation Research Record No. Elastic models for culverts, pavement layers, and surrounding soil are appropriate for numerical modeling of box culverts under loading for load rating purposes.Ībdel-Karim, A.M., Tadros, M.K. The deflection profiles obtained from the field test and the numerical simulation suggest that the traffic load acted more like a concentrated load distributed over a limited area on the culvert. The deflections computed by the numerical method were in good agreement with those observed in the field test. The maximum deflections measured during the static and traffic loads were 0.6 mm and 0.41 mm respectively. ![]() The observed deflections in the field test were generally smaller under moving loads than static loads. The numerical results with the material properties determined in the laboratory were compared with the field test results. Linear elastic models were used for the pavement layers and soil. A 3-D numerical model of the culvert was developed using a finite difference program FLAC3D. The properties of the soil and pavement layers were determined in the laboratory. Soil and pavement samples were obtained by drilling operation on the test site. Deflections under the culvert roof were measured during loading. A low-boy truck with a known axle configuration and loads was used to apply seven static load combinations and traffic loads at different speeds. ![]() The culvert in the field test was instrumented with displacement transducers to capture the deformations resulting from different combinations of static and traffic loads. This paper presents field study and numerical modeling results for a single-cell low-fill concrete box culvert under a flexible pavement subjected to traffic loading. ![]()
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