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Dynamic Response Analysis of Pile Foundations by Using Variational Calculus

by Toyoaki Nogami, Univ of California, La Jolla, United States,
Jian-Xiong Zhu, Univ of California, La Jolla, United States,
Takayoshi Ito, Univ of California, La Jolla, United States,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

Various approaches have been developed for the frequency-domain dynamic response analysis. The one proposed by M. Novak (1974) is simplest of all and yet produces the results very close to those computed by far more complex rigorous approaches des[ite its significant simplification. T. Nogami (1986, 1988) has extended it for the time-domain. However, this approach fails to produced meaningful results at frequencies below the fundamental natural frequency of the ground. A new approach presented in the paper is simple next to Novak's approach but works well at any frequency including the static condition.

Subject Headings: Pile foundations | Dynamic structural analysis | Dynamic response | Structural dynamics | Soil dynamics | Soil analysis | Natural frequency

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