理論応用力学講演会 講演論文集
第64回理論応用力学講演会
セッションID: OS3-02-04
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OS3-2 極大地震時における表層地盤の強い非線形現象とその影響(2)
材料非線形性に伴う共振現象の変化に着目した飽和盛土造成斜面の1G場振動台実験
村尾 英彦野田 利弘中井 健太郎吉川 高広堀田 繁
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Earthquake motions include waves of various frequency bands ranging from low to high frequency. Notably, the difference in dominant frequencies affects the seismic stability of fill slopes. Hence, to analyze the deformation/failure mechanism during an earthquake, 1G shaking-table tests were conducted on saturated fill slopes considering the resonance phenomenon. Evaluating the seismic stability of the fill slopes depends on not only the magnitude of the acceleration but also the relationship between the natural frequency and the input frequency. Moreover, it is also important to grasp the change in the natural frequency associated with the progress of plastic deformation due to repeated loading.

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