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    • 6. 发明专利
    • Seismic isolation method of bridge and bridge
    • JP5266681B2
    • 2013-08-21
    • JP2007192316
    • 2007-07-24
    • 株式会社大林組
    • 巧 鈴木光男 東野摂 野澤
    • E01D19/02E01D19/04
    • PROBLEM TO BE SOLVED: To provide a bridge which enables a person, a vehicle, etc. to easily and stably stop on a bridge girder in either of the case of the occurrence of a big earthquake and the ordinary case of the nonoccurrence of the big earthquake, and a base-isolating method for the bridge. SOLUTION: This bridge 1 comprises a bridge pier supporting member 40 which is installed on a footing 30 fixed to ground G so as to support a bridge pier 20 in a horizontally and relatively movable manner, and a bridge girder supporting member 60 which is provided on the bridge pier 20 so as to support the bridge girder 10 in a horizontally and relatively movable manner. Until the bridge girder supporting member 60 undergoes an earthquake motion at a predetermined level or above, it allows the relative displacement of the bridge girder 10 with respect to the bridge pier 20. Until the bridge pier supporting member 40 undergoes the earthquake motion at the predetermined level or above, it regulates the relative displacement of the bridge pier 20 with respect to the footing 30. When and after the bridge girder supporting member 60 undergoes the earthquake motion at the predetermined level or above, it regulates the relative displacement of the bridge girder 10 with respect to the bridge pier 20. When and after the bridge pier supporting member 40 undergoes the earthquake motion at the predetermined level or above, it allows the relative displacement of the bridge pier 20 with respect to the footing 30. COPYRIGHT: (C)2009,JPO&INPIT