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A platform for research: civil engineering, architecture and urbanism
REMOVAL METHOD OF EXISTING CONCRETE FLOOR SLAB
PROBLEM TO BE SOLVED: To provide a removal method of an existing concrete floor slab which can alleviate work on a bridge face without cutting an existing main girder, and can suppress noise at the removal work.SOLUTION: A removal method of an existing concrete floor slab has: a drilling process for drilling a region approximate to an upper flange 14A of an existing main girder 14 out of the existing concrete floor slab 12 to a direction substantially orthogonal to a bridge axial direction being a substantially-horizontal direction, and forming a drilling part 20; an edge cutting process for adding a force 42 in a substantially-vertical direction to an inner face of the drilling part 20 arranged in the drilling process, and cutting edges of the existing concrete floor slab 12 and the existing main girder 14; and a hoisting process for upwardly hoisting the existing concrete floor slab 12 which is edge-cut from the existing main girder 14 in the edge cutting process.SELECTED DRAWING: Figure 4
【課題】既設主桁を切断することなく橋面上での作業を軽減することができ、かつ、撤去作業時の騒音を抑制できる既設コンクリート床版の撤去方法を提供する。【解決手段】既設コンクリート床版１２の部位のうち、既設主桁１４の上フランジ１４Ａに近接する部位を、略水平方向であって、かつ、橋軸方向と略直交する方向に削孔して削孔部２０を設ける削孔工程と、前記削孔工程で設けられた削孔部２０の内面に略上下方向に力４２を加えて既設コンクリート床版１２と既設主桁１４との縁切りをする縁切り工程と、前記縁切り工程で既設主桁１４との縁切りをされた既設コンクリート床版１２を上方に吊り上げる吊り上げ工程と、を有する。【選択図】図４
REMOVAL METHOD OF EXISTING CONCRETE FLOOR SLAB
PROBLEM TO BE SOLVED: To provide a removal method of an existing concrete floor slab which can alleviate work on a bridge face without cutting an existing main girder, and can suppress noise at the removal work.SOLUTION: A removal method of an existing concrete floor slab has: a drilling process for drilling a region approximate to an upper flange 14A of an existing main girder 14 out of the existing concrete floor slab 12 to a direction substantially orthogonal to a bridge axial direction being a substantially-horizontal direction, and forming a drilling part 20; an edge cutting process for adding a force 42 in a substantially-vertical direction to an inner face of the drilling part 20 arranged in the drilling process, and cutting edges of the existing concrete floor slab 12 and the existing main girder 14; and a hoisting process for upwardly hoisting the existing concrete floor slab 12 which is edge-cut from the existing main girder 14 in the edge cutting process.SELECTED DRAWING: Figure 4
【課題】既設主桁を切断することなく橋面上での作業を軽減することができ、かつ、撤去作業時の騒音を抑制できる既設コンクリート床版の撤去方法を提供する。【解決手段】既設コンクリート床版１２の部位のうち、既設主桁１４の上フランジ１４Ａに近接する部位を、略水平方向であって、かつ、橋軸方向と略直交する方向に削孔して削孔部２０を設ける削孔工程と、前記削孔工程で設けられた削孔部２０の内面に略上下方向に力４２を加えて既設コンクリート床版１２と既設主桁１４との縁切りをする縁切り工程と、前記縁切り工程で既設主桁１４との縁切りをされた既設コンクリート床版１２を上方に吊り上げる吊り上げ工程と、を有する。【選択図】図４
REMOVAL METHOD OF EXISTING CONCRETE FLOOR SLAB
既設コンクリート床版の撤去方法
NAKAYAMA ATSUO (author) / NAKAMURA NOBUHIDE (author) / TANAKA HIROAKI (author)
2017-12-14
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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