Impedance Functions and Input Motions for Embedded Square Foundations
- 1 April 1989
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Geotechnical Engineering
- Vol. 115 (4) , 491-503
- https://doi.org/10.1061/(asce)0733-9410(1989)115:4(491)
Abstract
Tables of impedance functions and effective input motions for rigid square foundations embedded in a uniform elastic half‐space are presented. The tables include numerical results obtained by a hybrid approach for embedment to half‐width ratios ranging from 1/3 to 3/2 and by a boundary element method for surface foundations. Media characterized by Poisson's ratios of 1/4, 1/3 and 0.4 are considered. The impedance functions include vertical, torsional, horizontal, rocking, and coupling terms. Effective foundation input motions for vertically incident P and SH waves and for horizontally incident SH waves are also listed.Keywords
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