68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference

FINITE ELEMENT ANALYSES OF BURIED PIPELINE SUBJECTED TO LIVE LOAD USING ABAQUS

Session: Transportation and Linear Infrastructure II / Transports et infrastructures linéaires II

Ahdyeh Mosadegh, PhD Candidate (Australia)
Hamid Nikraz, Professor at Faculty of Science and Engineering (Australia)

This paper shows the methodology used for modelling the behaviour of a buried pipeline subjected to traffic load using the finite element method (FEM). Soil behaviour is represented by the elasto-plastic Drucker-Prager model and the pipe material is assumed to be isotropic and linear elastic using FEM software ABAQUS 6.13. For the whole system, the effect of surface pressure amplitude (magnitude of 200 and 550 kPa) on pipe-soil displacement and stress distribution is investigated at different pipe burial depths of 1–5 times the pipe diameter. In addition, the influence of pipe-soil interaction properties, boundary conditions at pipeline ends, pipe material properties and internal pressure are taken into consideration. For all cases, the results are compared with predictions obtained through numerical and experimental research, which shows satisfactory agreement with results from the literature.