橋脚周りの流況変化が接航する船の保針におよぼす影響について

概要

論文の詳細を見る
In recent years, a danger of a ship colliding with off-shore structures has been increased as they are built with various purposes. In this paper the authors studied about the effect of current around the bridge pier for safe course-keeping of the ship. At the begining it was examined experimentally about the asymmetrical hydrodynamic forces acting on the ship around the pier. On the fair current and the reverse current, same experimental formulae of these forces were found from measured data. Secondly it was calculated on trajectories of the ship passing near the pier in the fair current and the reverse current. Then authors investigated the close limit to the pier for safe course-keeping which was found by trajectories calculated to all sorts of condition. According to the estimated limit, the dangerous zone is wide as the current velocity is strong and as the ship is small under the same condition of the ship's speed relative to the pier. And it shows that steering is rather effective to the reverse current.
社団法人日本航海学会の論文
1979-09-15