Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
EXISTING BRIDGE REBUILDING METHOD AND REBUILDING BRIDGE
PROBLEM TO BE SOLVED: To provide an existing bridge rebuilding method and a rebuilding bridge, which can reduce construction costs by utilizing strength of an existing bridge footing without requiring reinforcement of the bridge footing.SOLUTION: An existing bridge rebuilding method according to this invention is used to rebuild an existing bridge over middle and small rivers over which one or two bridge footings 7 are installed. The existing bridge rebuilding method according to this invention comprises: a removal process to remove an existing bridge girder installed across both banks 80 of a river 8; and an installation process to install a new continuous girder 2 across both banks 80 of the river 8 after the existing bridge girder is removed. In the installation process, a bridge footing bearing 3 is installed on a levee crown 7a of the existing bridge footing 7 installed over the river; and the continuous girder 2, which continuously extends to both banks 80 of the river 8, is installed by separating an undersurface of the continuous girder 2 from an upper end face of the bridge footing bearing 3 or making the undersurface of the continuous girder butt against the upper end face of the bridge footing bearing 3.SELECTED DRAWING: Figure 2
【課題】既設の橋脚の強度を利用しながら、橋脚の補強を必要としないものとして、施工コストを抑制することのできる既設橋梁の架替工法及び架替橋梁を提供する。【解決手段】本発明を適用した既設橋梁の架替工法は、１又は２基程度の橋脚７が設けられる中小河川等において、既設橋梁を架け替えるために用いられる。本発明を適用した既設橋梁の架替工法は、河川８の両岸８０に架設された既設の橋桁を撤去する撤去工程と、既設の橋桁を撤去した河川８の両岸８０に新設の連続桁２を架設する架設工程とを備える。架設工程では、河川等内に設けられた既設の橋脚７の天端７ａに橋脚支承３を設置して、連続桁２の下面を、橋脚支承３の上端面から離間させて、又は、橋脚支承３の上端面に当接させて、河川８の両岸８０まで連続して延びる連続桁２が設けられる。【選択図】図２
EXISTING BRIDGE REBUILDING METHOD AND REBUILDING BRIDGE
PROBLEM TO BE SOLVED: To provide an existing bridge rebuilding method and a rebuilding bridge, which can reduce construction costs by utilizing strength of an existing bridge footing without requiring reinforcement of the bridge footing.SOLUTION: An existing bridge rebuilding method according to this invention is used to rebuild an existing bridge over middle and small rivers over which one or two bridge footings 7 are installed. The existing bridge rebuilding method according to this invention comprises: a removal process to remove an existing bridge girder installed across both banks 80 of a river 8; and an installation process to install a new continuous girder 2 across both banks 80 of the river 8 after the existing bridge girder is removed. In the installation process, a bridge footing bearing 3 is installed on a levee crown 7a of the existing bridge footing 7 installed over the river; and the continuous girder 2, which continuously extends to both banks 80 of the river 8, is installed by separating an undersurface of the continuous girder 2 from an upper end face of the bridge footing bearing 3 or making the undersurface of the continuous girder butt against the upper end face of the bridge footing bearing 3.SELECTED DRAWING: Figure 2
【課題】既設の橋脚の強度を利用しながら、橋脚の補強を必要としないものとして、施工コストを抑制することのできる既設橋梁の架替工法及び架替橋梁を提供する。【解決手段】本発明を適用した既設橋梁の架替工法は、１又は２基程度の橋脚７が設けられる中小河川等において、既設橋梁を架け替えるために用いられる。本発明を適用した既設橋梁の架替工法は、河川８の両岸８０に架設された既設の橋桁を撤去する撤去工程と、既設の橋桁を撤去した河川８の両岸８０に新設の連続桁２を架設する架設工程とを備える。架設工程では、河川等内に設けられた既設の橋脚７の天端７ａに橋脚支承３を設置して、連続桁２の下面を、橋脚支承３の上端面から離間させて、又は、橋脚支承３の上端面に当接させて、河川８の両岸８０まで連続して延びる連続桁２が設けられる。【選択図】図２
EXISTING BRIDGE REBUILDING METHOD AND REBUILDING BRIDGE
既設橋梁の架替工法及び架替橋梁
MASHITA KIYOTAKA (Autor:in)
19.01.2017
Patent
Elektronische Ressource
Japanisch
IPC:
E01D
BRIDGES
,
Brücken
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