動揺シミュレーションによる防波堤ケーソンの据付限界条件に関する検討

抄録

The installation works of breakwater caissons at ports facing the open sea oftenbecome very difficult by the influence of swells and high waves. In other words, the efficiency of caisson installation works greatly depends on wave conditions.The limit conditions for installation of breakwater caissons such as the limit motions and the limit wave heights are therefore essential as the criterion of judgment in carrying out the caisson installation works under sever wave conditions. However, those limit conditions for installation have not been sufficiently investigated. The author accordingly examined the limit conditions for installation in greater detail by the numerical simulation of motions in this study. In the simulation, the author accurately considered the caisson shapes and the nonlinearity of moorings based on the results of the case investigations for caisson installation works on the Pacific coast. As a result, the calculated limit wave heights agreed largely with the ones estimated from the investigation results on the execution and suspension of the caisson installation works