| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bridge bearing structure which can reduce costs by using a simple structure without use of a plurality of rubber bearing materials and can be arranged in an installation space having restrictions imposed on a height dimension under a girder by keeping the height dimension small. <P>SOLUTION: In a bridge bearing structure, rubber bearing materials 1a, which have a laminated rubber 10 having a plurality of soft plates and a plurality of hard plates stacked alternately, are provided between a bridge girder 21 and a bridge pier 22. The bridge bearing structure includes an upper flange plate 11 which is fastened to a top surface of an upper steel plate 10A of the laminated rubber 10 by means of a fastening bolt 13 and fixed to the bridge girder 21, and a coiled spring 17 which is inserted in an interposed manner between a restraining surface for restraining the upper flange plate 11 of the fastening bolt 13 and the upper flange plate 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
