A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
REINFORCEMENT METHOD AND REINFORCEMENT STRUCTURE OF EXISTING PILE FOUNDATION
PROBLEM TO BE SOLVED: To provide a reinforcement method and a reinforcement structure of existing pile foundation that can reinforce an existing foundation footing without widening and that can reduce the range of earth retaining work and temporary cofferdam construction work as much as possible without the need for a large-sized heavy machine.SOLUTION: A reinforcement method of an existing pile foundation for supporting a lower structure of a bridge such as a bridge pier P1 comprises: a footing drilling step of drilling until a pile head 20 of an existing pile 2 is exposed from the top face of a footing 3 of a pile foundation; a pile upper part drilling step of drilling the upper part of the existing pile 2 with the exposed pile head 20; a reinforcement material inserting step of inserting a reinforcement material 4 for reinforcing the existing pile 2 in holes h1 and h2 drilled in the previous step; and a concrete placing step of placing concrete in the holes h1 and h2 for back-filling with the reinforcement material 4 to the top face of the footing.SELECTED DRAWING: Figure 3
【課題】既設の基礎フーチングを拡幅することなく補強することができ、土留め工事や仮締切り工事の範囲を極力小さくすることができるとともに、大型の重機も不要である既設杭基礎の補強工法及び補強構造を提供する。【解決手段】橋脚Ｐ１などの橋梁の下部構造体を支持する既設杭基礎の補強工法において、杭基礎のフーチング３の上面から既設杭２の杭頭２０が露出するまで削孔するフーチング削孔工程と、杭頭２０が露出した既設杭２の上部を削孔する杭上部削孔工程と、既設杭２を補強する補強材４を前工程で削孔した孔ｈ１，ｈ２に挿置する補強材挿置工程と、孔ｈ１，ｈ２にコンクリートを打設して補強材４ごと前記フーチングの上面まで埋め戻すコンクリート打設工程と、を備える。【選択図】図３
REINFORCEMENT METHOD AND REINFORCEMENT STRUCTURE OF EXISTING PILE FOUNDATION
PROBLEM TO BE SOLVED: To provide a reinforcement method and a reinforcement structure of existing pile foundation that can reinforce an existing foundation footing without widening and that can reduce the range of earth retaining work and temporary cofferdam construction work as much as possible without the need for a large-sized heavy machine.SOLUTION: A reinforcement method of an existing pile foundation for supporting a lower structure of a bridge such as a bridge pier P1 comprises: a footing drilling step of drilling until a pile head 20 of an existing pile 2 is exposed from the top face of a footing 3 of a pile foundation; a pile upper part drilling step of drilling the upper part of the existing pile 2 with the exposed pile head 20; a reinforcement material inserting step of inserting a reinforcement material 4 for reinforcing the existing pile 2 in holes h1 and h2 drilled in the previous step; and a concrete placing step of placing concrete in the holes h1 and h2 for back-filling with the reinforcement material 4 to the top face of the footing.SELECTED DRAWING: Figure 3
【課題】既設の基礎フーチングを拡幅することなく補強することができ、土留め工事や仮締切り工事の範囲を極力小さくすることができるとともに、大型の重機も不要である既設杭基礎の補強工法及び補強構造を提供する。【解決手段】橋脚Ｐ１などの橋梁の下部構造体を支持する既設杭基礎の補強工法において、杭基礎のフーチング３の上面から既設杭２の杭頭２０が露出するまで削孔するフーチング削孔工程と、杭頭２０が露出した既設杭２の上部を削孔する杭上部削孔工程と、既設杭２を補強する補強材４を前工程で削孔した孔ｈ１，ｈ２に挿置する補強材挿置工程と、孔ｈ１，ｈ２にコンクリートを打設して補強材４ごと前記フーチングの上面まで埋め戻すコンクリート打設工程と、を備える。【選択図】図３
REINFORCEMENT METHOD AND REINFORCEMENT STRUCTURE OF EXISTING PILE FOUNDATION
既設杭基礎の補強工法及び補強構造
IWAMOTO YASUSHI (author)
2018-02-15
Patent
Electronic Resource
Japanese
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