Soil Structure Interaction of Corrugated Box Culvert

Abstract

This paper aims to investigate the behaviour and performance of Corrugated Box Culverts under different conditions by utilizing comprehensive numerical models. The case study selected for this research was the box culvert with different crown stiffness in Lidköping, Sweden. The finite element analysis results showed the culvert’s crown displacements, thrust, and bending moment, making it possible to gain insight into the performance of such structures during backfilling. For numerical study, two-dimensional numerical models were developed using Plaxis 2D, which was verified against the field measurements. Furthermore, parametric studies were conducted to examine the mechanical responses influenced by different model conditions. The study showed that the trench geometry of the excavation was found to have only a negligible effect on the results. It was also found that varying the soil cover depth and stiffness of the backfill soil significantly affects the performance of the Corrugated Box Culvert.