Small-scale testing of rehabilitated pile groups

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Title: Small-scale testing of rehabilitated pile groups
Authors: Laefer, Debra F.
Manke, Jonathan P.
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Date: Oct-2006
Abstract: The grouted, helical pier system (GHPS) is proposed as an example of a capacity improvement option for existing pile foundation groups. This paper explores the relative relationships between these geotechnical elements through the implementation of small-scale ground modification techniques causing increases in the axial capacity of the foundation, as measured as a function of load-based deflection. This initial set of tests indicates clear improvement of both piled and non-piled foundations through a variety of intervention methods both in terms of overall capacity and with respect to generating that capacity with smaller mobilization levels. The testing program also showed the likelihood for using some form of superposition as viable design methodology for predicting the performance of existing cast-in-place foundations that have been upgraded with ground-reinforcement and ground-improvement techniques.
Funding Details: Other funder
Type of material: Conference Publication
Publisher: BRE Press
Copyright (published version): IHS BRE Press, 2006
Keywords: Pile reuseDeep foundationsRehabilitationDelical piersGroutingScaled laboratory experimentsDesign methodologiesScrew piles
Subject LCSH: Piling (Civil engineering)
Language: en
Status of Item: Peer reviewed
Is part of: A. P. Butcher, J. J. M. Powell and H. D. Skinner (eds.). Reuse of foundations for urban sites : proceedings of the International Conference
Conference Details: Paper presented at the International Conference on Re-use of Foundations for Urban Sites (RuFUS), 19-20 October, 2006, Watford, U.K.
ISBN: 1860819397
Appears in Collections:Urban Institute Ireland Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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