Communication Dans Un Congrès Année : 2022

Laboratory Testing of a Model for Pipe Buried Into Sand Subjected to a Surface Loading

Résumé

A pipe buried into sand was subjected to a surface loading in order to study its mechanical behaviour. The test was conducted at small scale, in a tank filled with sand, while the pipe was instrumented with strain gauges and inner displacements sensors. The paper presents the soil vertical settlement, and pipe response to the load, in terms of deformations, stresses, and radial displacements. The radial displacements are computed using a specially developed methodology and allow to present the deformed shape of the pipe, with limited direct measurements. Results show that under this loading the vertical diameter of the pipe decreases, while the horizontal one increases, but to a lower degree. The deformed shape is more complex than the ellipse often considered. The pipe deformed shape exhibits a rapid change in curvature near the crown, often referred as “heart shaped deformation” in the literature. The overall values of stresses reached remain far from the elastic limit of the material used, and smaller than the impact of the inner gas pressure for this type of relatively thick pipe of moderate diameter.
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Dates et versions

hal-04909061 , version 1 (23-01-2025)

Identifiants

Citer

Antoine Mertz, Christophe Dano, Charles Fernandez, Orianne Jenck, Adrien Lebrun, et al.. Laboratory Testing of a Model for Pipe Buried Into Sand Subjected to a Surface Loading. ASME 202214th International Pipeline Conference, ASME, Sep 2022, Calgary, Canada. ⟨10.1115/IPC2022-86098⟩. ⟨hal-04909061⟩
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