Kinematic Pile Response to Vertical P-wave Seismic Excitation
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Volume 128, Issue 10
Abstract
An analytical solution based on a rod-on-dynamic-Winkler-foundation model is developed for the response of piles in a soil layer subjected to vertical seismic excitation consisting of harmonic compressional waves. Closed-form solutions are derived for: (1) the motion of the pile head; (2) the peak normal strain in the pile, and (3) the group effect between neighboring piles. The solutions are expressed in terms of a dimensionless kinematic response factor relating pile-head motion and free-field soil surface motion, a dimensionless strain transmissibility factor relating pile and soil peak normal strains, and a pile-to-pile interaction factor α measuring group effects. It is shown that a pile foundation may significantly reduce the vertical seismic excitation transmitted to the base of a structure.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 128 • Issue 10 • October 2002
Pages: 860 - 867
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Feb 4, 2000
Accepted: Jan 7, 2002
Published online: Sep 13, 2002
Published in print: Oct 2002
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