| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an elastic body restraining degree variable structure capable of realizing vertical spring performance suitable for a wide input range from low load to high load in a bearing device for bearing a main structure such as building and bridge. <P>SOLUTION: An elastic body restraining degree variable structure comprises: an upper shoe 11; a lower shoe 12; an elastic body 13 disposed between the upper shoe 11 and the lower shoe 12; and elastic deformation restraining bodies 16 surrounding the elastic body 13 at positions with which side faces of the elastically deformed elastic body 13 are in close contact or contact. Protrusions 14 or recesses 15 are formed on the side faces of the elastic body 13. The elastic body 13 is surrounded by the upper shoe 11, the lower shoe 12, and the elastic deformation restraining bodies 16, and is brought into a substantially sealed state. The degree of this sealed state becomes higher with an increase of load to the elastic body 13. <P>COPYRIGHT: (C)2013,JPO&INPIT |
