BRIDGE BEARING STRUCTURE

To provide a bridge bearing structure capable of controlling the damage degree of concrete of a substructure and a superstructure caused by a steel stopper during an earthquake.SOLUTION: A bridge bearing structure is formed by connecting a concrete substructure and a concrete superstructure with a steel stopper. The bridge bearing structure has an upper control embedded section 3A where an upper part 131 of a steel bar stopper 13 is embedded in a bridge girder 12, a loose space 133 where the steel stopper is exposed in a gap between the bridge girder 12 and a bridge footing 11, and a lower control embedded section 3B where a lower part 132 of the steel bar stopper 13 is embedded in the bridge footing 11. The upper control embedded section 3A and the lower control embedded section 3B have outer cylinder parts 31A, 31B that have an inner space shape larger than the outer shape of the steel bar stopper 13, and a filler section 33 that is charged in a gap between the outer cylinder parts 31A, 31B and the steel bar stopper 13.SELECTED DRAWING: Figure 1 【課題】地震時の鋼製ストッパによる下部工や上部工のコンクリートの損傷の程度を制御することが可能な橋梁の支承構造を提供する。【解決手段】コンクリート製の下部工と上部工とが鋼製ストッパによって連結される橋梁の支承構造である。鋼棒ストッパ１３の上部１３１を橋桁１２に埋設させる上部制御埋設部３Ａと、橋桁１２と橋脚１１との間の空隙に鋼製ストッパが露出する遊間部１３３と、鋼棒ストッパ１３の下部１３２を橋脚１１に埋設させる下部制御埋設部３Ｂとを備える。上部制御埋設部３Ａ及び下部制御埋設部３Ｂは、鋼棒ストッパ１３の外形より内空形状が大きい外筒部３１Ａ，３１Ｂと、外筒部３１Ａ，３１Ｂの内部の鋼棒ストッパ１３との隙間に充填される充填材部３３とを有する。【選択図】図１