大振幅水平載荷実験に基づく杭-地盤系の非線形挙動が群杭効果の杭頭変位振幅依存性に及ぼす影響の考察

概要

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Nonlinear soil-structure interaction effects under strong ground motions should be considered in the seismic design. In order to investigate the nonlinear behavior of pile-soil system, the cyclic lateral loading tests for pile foundation in dry sand subjected large displacement were conducted. This paper presents the results of the tests and the analyses by the 3 dimensional finite element method. The major findings obtained from tests and analyses are summarized as follows; 1) the amplitude dependency of the load distribution ratio shows the almost same tendency by short pile and slender pile, 2) the experimental results can be precisely simulated by the 3-dimensional finite element analysis, 3) the plasticity of the ground and the pile head greatly influences the amplitude dependency of the load distribution ratio.
一般社団法人日本建築学会の論文
2008-03-25