The Study on Soil Pressure on Embankment Culvert under High-Fill

Abstract:

Based on the centrifuge model test this study established a mathematical model in which the interaction of culvert, soil, and culvert base and foundation were incorporated and developed a new method for calculating the soil pressure on embankment culvert. Centrifuge model test was performed in varying conditions to determine the relation between vertical soil pressure and filling height and to find out the variation of displacement field nearby the culvert. The results indicate that the vertical soil pressure on trench culvert is not always lower than the theoretical calculation value instead, it is related to and varies in nonlinear manner with a number of elements including filling height, width and slope of trench, dimensions of culvert, physical properties of backfill material, and stiffness of foundation, etc. When fills go up to a certain height, soil arch effect may develop on top of the culvert, with limited stability, which can relieve the stress concentration in this area.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1696-1699
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1696
• Online since: May 2012
• Authors: Xiao Lin Weng, Wei Wang, Liu Jun Zhang
• Keywords: Centrifuge Model, Culvert, High-Fill, Soil Pressure

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DOI: 10.1139/t91-083

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DOI: 10.1139/t96-079-301