STUDY ON INFLUENCE OF FOOTING WIDTH ON MOTION OF FLOATING CAISSON

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  • 浮遊ケーソンの動揺に与えるフーチング幅の影響に関する研究

Abstract

<p> In order to reduce the motion of a floating caisson, the effectiveness of a footing was investigated in terms of its width. Free oscillation experiments showed that the natural period of the pitch and the nonlinear extinction coefficients of the heave and pitch increased with the relative footing width. Forced oscillation experiments showed that the amplitude of the heave became large when the wave period was the same as the natural period of the heave. Similarly, the amplitude of the pitch increased when the wave period was one or two times larger than the natural period of the pitch. These suggested that it is essential to determine footing width considering the findings of this study.</p>

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