浅海域浮体構造物における剛性と鉛直地震応答について

抄録

Former types of the reclamation system and the pier system for ground held a problem that it is difficult on improvement of the load reduction to the circumference environment in case of bigger water depth. From a viewpoint of the load reduction, a floating structure of the buoyancy use type effectively is proposed.
Because a floating structure as the artificial ground is used on a large scale, there is the thing that a seismic response depends on stiffness and the leg spring. This research investigates the relation between float stiffness and a vertical seismic response by a tank test and numerical analysis. As a result, when float stiffness is enlarged and the leg spring constant is set up small, the action load to a supporting leg turns out that it is advantageous.