Centrifugal Modeling of Seismic Behavior of Large-Diameter Pipe in Liquefiable Soil
This article has been corrected.
VIEW CORRECTIONPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 129, Issue 12
Abstract
This study focused on the behavior of a large-diameter burial pipe with special reference to its stability against flotation subject to soil liquefaction. Centrifugal modeling technique was used where the results are presented for a total of eight shaking table tests conducted on the burial pipe in a laminar box under gravitational field. The ground was prepared with Nevada sand at a relative density of 38% and shaken with a sinusoidal wave at an amplitude of The use of a viscous fluid in a saturated soil deposit satisfied the time scaling relationships of both dynamic and dissipation phenomena. The centrifugal modeling technique simulated flotation of pipeline as the soil liquefied. A technique that used gravels and geosynthetic material was used to mitigate flotation. The response of the soil deposit, in terms of acceleration and excess pore pressure, was investigated. The uplifting of the pipe, earth pressure response and ground surface deformation were also presented. Based on the test results, a design procedure was proposed for the burial pipe in resisting flotation due to soil liquefaction. The deadweight and stiffness of the gravel unit, which was confined by geosynthetic, were important items in design.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 129 • Issue 12 • December 2003
Pages: 1092 - 1101
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Nov 19, 1999
Accepted: Feb 16, 2003
Published online: Nov 14, 2003
Published in print: Dec 2003
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