Time‐Domain Analysis of Dynamically Loaded Single Piles
Publication: Journal of Engineering Mechanics
Volume 118, Issue 1
Abstract
The response analysis of single piles under time‐dependent forces and incident wave excitations is developed (method I) using a very efficient but approximate hybrid boundary element technique. The soil displacement equations are obtained using an efficient step‐by‐step time integration scheme. Treating the piles as one‐dimensional structures, its solutions are obtained by discretizing the differential equations of pile motions using finite difference approximations. The two systems are then coupled through the equilibrium and compatibility relations at the pile‐soil interface. An alternate general multiregion boundary element formulation (method II) is used to analyze the same problem, where the transformation of three‐dimensional (3‐D) dynamic BEM formulation into cylindrical coordinates and the integration along the circumferential direction lead to an axisymmetric analysis with only two‐dimensional (2‐D) boundary discretization. Good agreement between these two methods, as well as with a Laplace transform‐based transient scheme (method III), reveals the accuracy of the formulation.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 118 • Issue 1 • January 1992
Pages: 140 - 160
Copyright
Copyright © 1992 ASCE.
History
Published online: Jan 1, 1992
Published in print: Jan 1992
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