大振幅水平載荷実験に基づく杭-地盤系の非線形挙動のシミュレーション解析

概要

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Nonlinear soil-structure interaction effects under strong ground motions should be considered in the seismic design. At first, cyclic loading tests were conducted to observe the deformation of the soil below the ground surface through the transparent wall and investigate effects of the ratio of the diameter of pile to the depth of embedment of pile on nonlinear behavior of pile-soil system. Secondly, simulation analysis of the tests was conducted to investigate nonlinear behavior of pile-soil system. The major findings obtained from tests and simulation are summarized as follows; 1) in the case of short pile, a slip was generated in the soil for small amplitude before the ground was deformed like bump on the ground surface, 2) effect of the ratio of the diameter of pile to the depth of embedment of pile on deformation of the soil around piles is small, 3) the experimental results can be precisely simulated by the 3-dimensional finite element analysis.
一般社団法人日本建築学会の論文
2008-03-25