加振試験による杭基礎の非線形振動特性に関する研究

概要

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The soil around a pile subjected to earthquake excitation often becomes nonlinear. The dynamic characteristics of nonlinear soil-pile system are shown from the result of the forced vibration test in this paper. The single pile and 4-piles that are concrete piles are vibrated using the exciter in the test. The vibration loads of the piles are increased in three stages. It is found from the result of the test that the material nonlinearity is more effective than the geometrical nonlinearity for the behavior of single pile and the geometrical nonlinerity is more effective for the behavior of 4-pile. The results of test are simulated using the thin layer formulation that is modified for nonlinear analysis. The result of analysis agrees with the result of test after passing through the maximum displacement at the pile head.
社団法人日本建築学会の論文
1998-08-30