落石が発生する地震環境下における最大加速度と設計震度の関係について

概要

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We here study rock fall phenomena based on the behavior of a rigid body under many earthquake excitations. The states and the transition conditions of 2D rigid body with a wall are defined and the formulations of the motion are constructed. An effect of the wall on the overturning of the rigid body is investigated by changing the input ground motion. To simulate the rock fall phenomena, the floor length is constrained to the same length as the rigid body. Finally, we proposed a criteria between the peak acceleration of input ground motion and the static seismic coefficient. It would be a useful tool to design the seismic coefficient from the peak ground motion at the site that has a potential to sustain earthquake-induced rackfall damage.