| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a marine structure capable of easily adjusting a characteristic frequency, increasing an attenuation factor, reducing cost with a simple structure, and reducing affections of wave energy and tidal current energy, and useful as a support stand for an ocean wind power generator. <P>SOLUTION: A solid obtained by twisting a truncated polygonal pyramid which is widened toward its lower part and narrowed toward its upper part around its central axis L is defined as a virtual basic shape, and a linear leg material 2 is arranged along each of the respective oblique ridge lines of the solid. Thereby, a center line S or its extended line of each leg material is configured so as to come into contact with a virtual cylinder with the central axis L of the solid as a center, the leg materials 2 are interconnected by a joint member 20 in the vicinity of a contact between the virtual cylinder and the center lines of the leg materials, and a region below the disposed joint member and surrounded by the leg materials is secured as an open space 5. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
