Limit Loads of Buried Pipelines in Inelastic Soil Medium
Publication: Journal of Engineering Mechanics
Volume 119, Issue 5
Abstract
The limit loads of shallowly buried pipelines in an inelastic soil medium are investigated in this study. We model the pipelines as elastoplastic, infinitely long beams on an inelastic half space. The inelastic soil medium is characterized by the Mohr‐Coulomb and Drucker‐Prager criteria. We apply the finite‐difference method to solve the nonlinear equations of the detached pipe. The equations for the contacted pipe are solved by the finite‐element method, and the inelastic soil foundation is analyzed by the boundary‐element method with load increment. The numerical results qualitatively agree with previously published results. However, we found that the limit load of buried pipe can also be influenced by the foundation stiffness. In addition, it was found that the limit loads of buried pipes in Mohr‐Coulomb material are smaller than those in Drucker‐Prager material. The limit loads are larger for pipes with higher foundation stiffness, symmetric geometric imperfection, lower imperfection height, bigger diameter, and heavier inner content.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 119 • Issue 5 • May 1993
Pages: 938 - 954
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Jan 27, 1992
Published online: May 1, 1993
Published in print: May 1993
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