Numerical Study of Multi-Lane Surface Loading Effects on Corrugated Steel Culverts Buried in Shallow Cover Depth
Publication: Geo-Congress 2023
ABSTRACT
Mechanical response of corrugated steel culverts buried in shallow cover depth and subjected to service load conditions has been studied using finite element analysis (FEM) and the Canadian Highway Bridge Design Code (CHBDC). The nature of the surface load critically influences the internal stresses and deformations and finite element analyses have been conducted to investigate the internal forces due to backfill and CL-625 Truckload for wheel and axle loading for 1-, 2-, and 3-lane configurations. The results of the numerical simulations are compared with the recommended internal forces in the CHBDC. The results indicate that the culvert experiences the maximum values of these responses at the crown. In the numerical simulation, multi-lane loading increases the thrust and bending moment magnitude, but this effect is not considered in the bending moment equations used based on the Canadian code. The results of normalized thrust indicate the considered increment in thrust responses due to the multi-lane loading is consistent and conservative relative to the FEM results.
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Geo-Congress 2023
Pages: 522 - 531
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Published online: Mar 23, 2023
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