橋梁に作用する津波波力評価に対するVOF法に基づく数値計算法の適用性検討

Abstract

When the Tohoku Earthquake occurred in March 11, 2011, the associated tsunami washed away a number of bridges. This resulted in difficulties such as transport disorder to rescue and recovery operations. Therefore it is necessary to estimate of tsunami force acting on a bridge. In this study, we applied the three-dimensional numerical analysis based on VOF method to two hydraulic experiments, each with a different type of bridge model. The results of the calculation are compared with those of the experiments in regard to the horizontal and vertical forces. As a result, the method well simulated each time series variation of tsunami force acting on the bridge beam.