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Simplified Seismic Analysis of Pile Foundations

by H. Wayne Jones, US Army Engineering Waterways, Experimental Station, United States,
Paul F. Mlakar, US Army Engineering Waterways, Experimental Station, United States,
Reed L. Mosher, US Army Engineering Waterways, Experimental Station, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract:

The determination of displacement of the pile cap and displacements and forces of individual piles is essential to the design of pile foundation subject to both static and/or dynamic loading. Saul's pile group analysis procedure for three dimensional rigid pile cap is extended to provide a simplified, yet realistic approach for seismic analysis of pile foundations. Viscous damping of the pile-soil system and response spectrum loading were added to Saul's original method. The formulation of the mass and damping matrices and a modal analysis with response to the spectra loading are highlighted.

Subject Headings: Pile foundations | Seismic loads | Seismic tests | Three-dimensional analysis | Foundation design | Case studies | Seismic effects

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