質点系解析手法による河床材料の移動限界評価とかご工の水理設計への応用

抄録

A numerical model for calculation of the movement of a sand particle on riverbed was developed integrating a moment equilibrium equation. To evaluate the accuracy of the model, the pick-up rate is calculated, using a series of data of fluid force fluctuation acting on a sphere, sampled in a physical model experiment. Furthermore, a hydraulic design method for the brand-new-type gabion mattress made of small size pebbles and stiff wire meshes was presented as an application of this analysis. A physical model experiment using real size gabion mattress lends credence to the analysis.