Cone Models for Homogeneous Soil. I
Publication: Journal of Geotechnical Engineering
Volume 118, Issue 5
Abstract
For dynamic excitation, it is convenient to idealize homogeneous soil under a base mat by a semi‐infinite truncated cone. It is easy to analyze the cone model for vertical and horizontal translation, as well as for rocking and torsional rotation. The accuracy by comparison to rigorous half‐space solutions is quite adequate for practical applications. Time‐domain computational methods for translational and rotational motions are described in both the stiffness and flexibility formulations and elucidated by examples. The infinite cone is dynamically equivalent to a discrete element representation of the soil, consisting of an interconnection of a small number of masses, springs, and dashpots. As an alternative to the physical‐component model, the response may be determined directly by simple recursive numerical procedures. The recursive methods are exact and particularly well suited for hand calculations of short‐duration excitations.
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Published In
Journal of Geotechnical Engineering
Volume 118 • Issue 5 • May 1992
Pages: 667 - 685
Copyright
Copyright © 1992 ASCE.
History
Published online: May 1, 1992
Published in print: May 1992
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