Numerical Simulation on Vertical Earth Pressure Distribution for Culverts under High Fills

He Fan; Bao Kuan Ning; Lei Gong

doi:10.4028/www.scientific.net/AMM.204-208.577

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Numerical Simulation on Vertical Earth Pressure...

Numerical Simulation on Vertical Earth Pressure Distribution for Culverts under High Fills

Abstract:

High fill culverts have been widely used in expressway in mountain area and problems of culverts frequently take place because of improper design including some earth-pressure calculated values conservatively or culvert type selection irrationally. FEM numerical simulation was carried out to investigate the stress state of the culvert fill. The effect of four influences on the stress state of high-filled culvert is discussed. The research results show that culvert structure type influences earth pressure distribution that arch culvert is different to slab and box culvert. Earth pressure values when boundary slope is 1:0.35 are all larger than slope 1:0. Due to arch effect and stress distributed secondly, nonlinear increased amplitude of earth pressure is reduced with fill heightening. Earth pressure of culvert top and side decreased along with culvert side wall thickness increment. The research can give some references on the design correctly.

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Periodical:

Applied Mechanics and Materials (Volumes 204-208)

Pages:

577-580

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.577

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Online since:

October 2012

Authors:

He Fan, Bao Kuan Ning, Lei Gong

Keywords:

Boundary Slope, Culvert Structural Type, Earth Pressure Distribution, High-Filled Culvert, Numerical Simulation

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References

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