| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing damage determining device capable of accurately and easily detecting whether a bearing is damaged with simple constitution. SOLUTION: The surface of outer skin rubber 18 covering the outer periphery of a laminate 14 formed by alternately laminating rubber layers 16 and metal plates 15 of the bearing 10 arranged between a bridge pier 106 and a bridge girder 108 to support the bridge girder 108 movably relative to the bridge pier 106, is mounted with a rubber piece 22 constituting the damage determining device 20 to extend across at least two adjacent metal plates 15. The extending performance of the rubber piece 22 is preset to cause breakage when the relative displacement D between the bridge pier 106 and the bridge girder 108 exceeds the displacement limit DL, the presence of damage in the bearing 10 can be accurately and easily detected with simple constitution. COPYRIGHT: (C)2011,JPO&INPIT |
