A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a bridge girder replacing method for further shortening a construction period required for replacing a bridge girder in a bridge having the bridge girder of a continuous girder type having an indefinite sectional shape in which a girder height changes in a bridge axial direction.SOLUTION: The bridge girder replacing method includes: attaching a temporary girder to a lower part of an existing girder 7; forming a demolition work space in front of a bridge support part 4 positioned at a front end, and forming a production work space behind the bridge support part 4 positioned at a rear end; producing a part of a new girder 11 in the production work space to extend a bridge girder 2; providing a delivery device; delivering a part of the new girder 11 and the existing girder 7 forward; demolishing a part of the existing girder 7 delivered to the demolition work space; and repeating bridge girder extension, delivery and demolition to remove the existing girder 7 and erect the new girder 11.SELECTED DRAWING: Figure 1
【課題】桁高が橋軸方向に変化する不定断面形状を有する連続桁形式の橋桁を有する橋梁において、橋桁の架替に必要な工期を更に短縮する橋桁架替工法を提供する。【解決手段】既設桁７の下部に仮設桁を取り付け、前端に位置する橋支持部４の前方に解体作業スペースを形成し、後端に位置する橋支持部４の後方に製作作業スペースを形成し、製作作業スペースにて新桁１１の一部を製作し、橋桁２を延長させ、送出装置を設け、新桁１１の一部及び既設桁７を前方へ送り出し、解体作業スペースに送り出された既設桁７の一部を解体し、橋桁延長と送り出しと解体とを繰り返し、既設桁７を撤去して新桁１１を架設する。【選択図】図１
To provide a bridge girder replacing method for further shortening a construction period required for replacing a bridge girder in a bridge having the bridge girder of a continuous girder type having an indefinite sectional shape in which a girder height changes in a bridge axial direction.SOLUTION: The bridge girder replacing method includes: attaching a temporary girder to a lower part of an existing girder 7; forming a demolition work space in front of a bridge support part 4 positioned at a front end, and forming a production work space behind the bridge support part 4 positioned at a rear end; producing a part of a new girder 11 in the production work space to extend a bridge girder 2; providing a delivery device; delivering a part of the new girder 11 and the existing girder 7 forward; demolishing a part of the existing girder 7 delivered to the demolition work space; and repeating bridge girder extension, delivery and demolition to remove the existing girder 7 and erect the new girder 11.SELECTED DRAWING: Figure 1
【課題】桁高が橋軸方向に変化する不定断面形状を有する連続桁形式の橋桁を有する橋梁において、橋桁の架替に必要な工期を更に短縮する橋桁架替工法を提供する。【解決手段】既設桁７の下部に仮設桁を取り付け、前端に位置する橋支持部４の前方に解体作業スペースを形成し、後端に位置する橋支持部４の後方に製作作業スペースを形成し、製作作業スペースにて新桁１１の一部を製作し、橋桁２を延長させ、送出装置を設け、新桁１１の一部及び既設桁７を前方へ送り出し、解体作業スペースに送り出された既設桁７の一部を解体し、橋桁延長と送り出しと解体とを繰り返し、既設桁７を撤去して新桁１１を架設する。【選択図】図１
BRIDGE GIRDER REPLACING METHOD
橋桁架替工法
KASUGA AKIO (author)
2022-07-04
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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