Burial Depth Effect on Flexural Behavior of Burred Piplines Subject to Normal Faulting

Masoumeh Saiyar, W. Andy Take, Ian D. Moore

In the proceedings of: GeoManitoba 2012: 65th Canadian Geotechnical Conference

Session: T3C - Pipelines and Trenchless Technologies

ABSTRACT: Buried pipeline response to differential ground displacements is a function of the amount of the ground displacement, the shape of the ground movement, as well as the width of the soil shearing zone. The soil deformation pattern is not completely known and is usually described by an assumed shape function. Prediction of the pipe bending behavior is highly depended on the accuracy of the assumed ground deformation shape. This paper presents the results of centrifuge tests on reduced scale models of continuous pipes examining the soil-pipe interaction under normal faulting at two different burial depths. Both pipe and soil displacements were measured using Particle Image Velocimetry (PIV). Pipe bending moments were then interpolated from pipe displacements using elastic beam theory. Soil displacement pattern and pipe flexural response at both shallow and deep burial depths are discussed. It is shown that the more shallow buried pipeline experienced lower bending moments but longer deformed length under a given fault offset.

RÉSUMÉ: de la largeur de la zone affectée. Le genre de déformation du sol n'est pas complètement connue cependant il est généralement décrit par une fonction mathématique assumée. La prédiction de la déformation du pipeline dépend de Cet article présente les résultats des tests de centrifugeuses sur les modèles à échelle réduite ainsi que de d'examen de l'interaction entre le sol et le pipeline enfouis à deux profondeurs différentes. Les déplacements du pipeline et celui du sol des particules. La flexion du pipeline a ensuite été interpolée à partir des déplacements mesurés basés sur la théorie de . de déplacement du sol en fonction de la réaction du pipeline pour les deux profondeurs d'enfouissement sélectionnés pour cette recherche. Les résultats montrent que le pipeline enterré plus profondément subit des moments plus petit en amplitude mais plus grande longueur.

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Cite this article:
Masoumeh Saiyar; W. Andy Take; Ian D. Moore (2012) Burial Depth Effect on Flexural Behavior of Burred Piplines Subject to Normal Faulting in GEO2012. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Paper340,author = Masoumeh Saiyar; W. Andy Take; Ian D. Moore,title = Burial Depth Effect on Flexural Behavior of Burred Piplines Subject to Normal Faulting,year = 2012}