Research Article
Nov 1969
Problems in Design and Installation of Offshore Piles
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VIEW THE REPLYAuthors: Bramlette McClelland, F.ASCE, John A. Focht Jr., F.ASCE, and William J. Emrich, M.ASCEAuthor Affiliations
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 95, Issue 6
Abstract
Offshore structures in water up to 385-ft deep require long pipe piles with ultimate compressive and tension capacities up to 3,500 and 2,000 tons, respectively. Static analysis is the most reliable and widely used method for predetermining pile penetrations and predicting pile capacity. Significant design uncertainties result, however, from dependence on empirical data derived from short, lightly loaded piles driven and tested on land. Pile loads have increased faster than the driving capability of available pile hammers, which include some with rated energy of 180,000 ft-lb. Larger hammers are needed to achieve a higher percentage of successful installations by driving alone. Wave-equation analysis may aid selection of optimum pile wall thickness to improve drivability. Pile installation aids, including jetting, drilling, and grouting, are useful but increase design uncertainty. Four case histories illustrate the problem of both design and installation of offshore piles.
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Published In
Journal of the Soil Mechanics and Foundations Division
Volume 95 • Issue 6 • November 1969
Pages: 1491 - 1514
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Nov 1969
Published online: Feb 12, 2021
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Authors
Affiliations
Bramlette McClelland, F.ASCE
Pres., McClelland Engrs., Inc., Houston, Tex.
John A. Focht Jr., F.ASCE
V. Pres., McClelland Engrs., Inc., Houston, Tex.
William J. Emrich, M.ASCE
V. Pres., McClelland Engrs., Inc., New Orleans, La.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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