Evaluation of the strength of oil pipelines built in the mountains

  • Nguyen Van Lam Ivano-Frankivsk National Technical University of Oil and Gas
  • A. S. Velychkovych Ivano-Frankivsk National Technical University of Oil and Gas
  • А.V.Andrusiak Ivano-Frankivsk National Technical University of Oil and Gas
Keywords: Aboveground transition, oil pipeline, foundation soil, stress state


The article presents the methodology for evaluating stress-strain state of aboveground oil pipelines which are constructed in mountainous areas based on mathematical formulation and the analytical solutions of the problem that describes the behaviour of aboveground pipeline under operational loads. Sections of pipeline have been modelled as tubular rods in contact with foundation soil according to the Fuss-Winkler hypothesis; and the two-dimensional thermoelastic state of aboveground pipeline established to determine maximum axial stresses that occur during operation, from which the strength of the pipeline is assessed based on energy hypotheses. This method allows the impact of foundation soil on the pipeline to be taken into account; demonstrates the re-distribution of internal force inside the aboveground pipeline when the rigidity of its foundation soil changes; and determines the boundary state which the pipeline reaches in its lower fibres at a short distance from the edge of the underground area.


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How to Cite
Nguyen, V. L., A. S. Velychkovych, & А.V.Andrusiak. (2015). Evaluation of the strength of oil pipelines built in the mountains. Petrovietnam Journal, 9, 46 - 52. Retrieved from http://pvj.com.vn/index.php/TCDK/article/view/795