Formulation of 3D Soil Springs for Pipe Stress Analyses

John Barrett, Ryan Phillips

In the proceedings of: GeoSt. John's 2019: 72nd Canadian Geotechnical Conference

Session: Offshore and Nearshore

ABSTRACT: A conventional pipe stress analyses often idealizes the pipe soil interaction with a beam-spring finite element model where independence is assumed between reactions in axial, lateral and vertical directions. There is however interdependence between these springs as recognized in recent PRCI guidelines. This paper highlights the development of a 3D soil-spring interaction model based on a continuum finite element analysis approach. For the constructed landslide scenarios considered in application of the model, the directional dependency is shown to change the accumulated plastic strain profile in the pipe.

RÉSUMÉ: -conduite avec un modèle et verticale. Il existe cependant une interdépendance entre ces sources et est reconnu dans les récentes directives du PRCI. Cet article met en évidence le -printemps basé sur une approche modèle, il est montré que la dépendance directionnelle change le profil de déformation plastique accumulé dans la conduite.

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