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Uplift Resistance of Interfering Pipelines Buried in Sand

Chakraborty, Debarghya and Kumar, Jyant (2016) Uplift Resistance of Interfering Pipelines Buried in Sand. In: JOURNAL OF PIPELINE SYSTEMS ENGINEERING AND PRACTICE, 7 (1).

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Official URL: http://dx.doi.org/10.1061/(ASCE)PS.1949-1204.00002...

Abstract

The vertical uplift resistance of interfering pipelines buried in sands has been computed using the lower-bound limit analysis in conjunction with finite elements and nonlinear optimization. The soil mass is assumed to follow the Mohr-Coulomb failure criterion and an associated flow rule. It is specified that all the pipes fail simultaneously at the same magnitude of the failure load. For different clear spacing (S) between the pipes, the magnitude of the efficiency factor (xi(gamma)) is determined. Because of pipes' interference, with a reduction in the spacing between the pipelines, the magnitude of xi(gamma) is found to decrease continuously. The results were found to compare quite well with the available data from literature for horizontal strip anchors. (C) 2015 American Society of Civil Engineers.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ASCE-AMER SOC CIVIL ENGINEERS, 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Keywords: Buried pipelines; Interference; Optimization; Plasticity; Sand; Uplift resistance
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 04 Mar 2016 09:08
Last Modified: 04 Mar 2016 09:08
URI: http://eprints.iisc.ac.in/id/eprint/53307

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