Pile Driving Analysis for Top Hammering and Bottom Hammering
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 128, Issue 2
Abstract
Piles are used for platform foundations and other offshore structures. Pile driving performance is predicted and analyzed using the wave equation analysis method. In general, the hammering point can be any part of the pile and the same analyses used for hammering at the top of the pile (top hammering) can be used for pile driving by hammering at the bottom of the pile (bottom hammering). Based on the numerical analyses in this research including residual stresses in the pile, there is little difference between the predictions of pile penetration per hammer blow by single- or multiple-blow analyses when soil resistance is low, such as 10 blows/m. The same is true for top hammering and bottom hammering when soil resistance is low. However, when soil resistance is high compared to that of the pile-hammer system, single-blow analysis predicts early refusal for top hammering and unrealistically high pile penetration for bottom hammering. Therefore, multiple-blow analysis, which considers residual stresses, should be used for better understanding of realistic pile driving performance and predictions. Additionally, this study shows that gravity is another controlling factor for pile driving in low-resistance soil.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 128 • Issue 2 • February 2002
Pages: 174 - 182
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Feb 1, 1999
Accepted: May 15, 2001
Published online: Feb 1, 2002
Published in print: Feb 2002
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