Lateral Soil-Pipe Interaction in Dry and Partially Saturated Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 139, Issue 12
Abstract
This paper describes finite-element (FE) modeling, validated by large-scale tests, to simulate the lateral force versus displacement relationship of pipelines under plane-strain conditions in both dry and partially saturated sand. The FE model is based on an elastoplastic characterization of the soil, with Mohr-Coulomb strength parameters to determine the soil yield surface. Direct shear test data and strain softening models are used to represent peak and postpeak strength behavior. A methodology for defining a strain-compatible secant modulus is also presented. The analytical results are compared with numerous large-scale experimental test results, showing excellent agreement in terms of prepeak, peak, and postpeak performance. The modeling process is used to show the relationship between the maximum lateral force and pipe depth and to explain decreased dimensionless maximum lateral forces mobilized by large diameter pipes at low depth to diameter ratios in dense sand.
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Acknowledgments
The authors acknowledge Drs. Soga, Anastasopoulos, and Robert for assistance in programming the FORTRAN subroutine. The work on which this paper was based was supported by the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Science Foundation (NSF) under Grant No. CMMI-1041498. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 139 • Issue 12 • December 2013
Pages: 2028 - 2036
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jul 31, 2012
Accepted: May 7, 2013
Published online: May 8, 2013
Published ahead of production: May 9, 2013
Published in print: Dec 1, 2013
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