FE Elastic Analysis of Measured Earth Pressure on Buried Rigid Pipes in Centrifuged Modelsby J. Tohda, Osaka City Univ, Japan,
M. Mikasa, Osaka City Univ, Japan,
M. Hachiya, Osaka City Univ, Japan,
S. Nakahashi, Osaka City Univ, Japan,
Abstract: FE elastic analyses of earth pressure on buried rigid pipes yielded results that agreed well with the earth pressure measured in 42 centrifuged models, confirming both the reliability of the model tests and the applicability of elastic theory to the earth pressure problem. The effect of soil's elastic moduli and three boundary conditions of the ground (at lateral and bottom boundaries and at the pipe surface) on the earth pressure were studied. The difference in the earth pressure among three types of pipe installations, ditch type with sheet-piling, ditch type without sheet-piling and embankment type, was found to be due to the difference in conditions at the lateral boundary of the ground, leading to a new design concept of the earth pressure in actual construction works.
Subject Headings: Finite element method | Soil pressure | Elastic analysis | Centrifuge models | Pressure pipes | Model tests | Buried pipes | Rigid pipes
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