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Cone Models for a Pile Foundation

by John P. Wolf, Swiss Federal Inst of Technology, Lausanne, Lausanne, Switzerland,
Jethro W. Meek, Swiss Federal Inst of Technology, Lausanne, Lausanne, Switzerland,
Chongmin Song, Swiss Federal Inst of Technology, Lausanne, Lausanne, Switzerland,



Document Type: Proceeding Paper

Part of: Piles Under Dynamic Loads

Abstract:

A single pile in a soil halfspace is modeled for dynamic excitation with disks and their corresponding double cones. This simple one-dimensional strength-of-materials approach provides physical insight and leads to surprisingly accurate results. Using dynamic-interaction factors of two piles, the dynamic stiffness of a pile group can also be analyzed. The soil can also consist of a layer resting on rigid rock. Comparisons with rigorous solutions are performed for the dynamic flexibility of an embedded disk, as well as for the dynamic stiffnesses of a cylindrical foundation embedded in a layer, of a single pile and for all degrees of freedom of a floating pile group.

Subject Headings: Pile foundations | Soil dynamics | Pile groups | Structural dynamics | Dynamic models | Conical bodies | Stiffening

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