Centrifuge Testing of Large Laterally Loaded Pile Groups in Sands
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 124, Issue 10
Abstract
An apparatus was developed to load large pile groups (3 × 3 to 7 × 3) founded in sand in the centrifuge laterally. The device consists of a hydraulic jack apparatus to install the piles, strain gauge instrumentation, and a data acquisition system. The instrumentation allowed the determination of both bending moments and shear forces at the head of each pile. Lateral load tests of 3 × 3 to 7 × pile groups were conducted in both loose and medium dense sands. Based on the test results, the pile group interaction effects were investigated. It was found that the p-y multiplier concept was valid. Also, the p-y multipliers (p specifically) are found to be independent of soil density and only a function of the pile group geometry. For this study (pile spacing was fixed at 3 diameters), they were found to be only a function of row position. Single pile tests were also completed for comparison purposes.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 124 • Issue 10 • October 1998
Pages: 1016 - 1026
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Oct 1, 1998
Published in print: Oct 1998
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