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A platform for research: civil engineering, architecture and urbanism
RE-DRILLING METHOD FOR CONCRETE STRUCTURE AND RE-DRILLING JIG FOR CONCRETE STRUCTURE
PROBLEM TO BE SOLVED: To re-drill in overlapping relation with an already drilled hole.SOLUTION: A first hole 10 is drilled in a concrete structure C in a first drilling step. In a re-drilling jig insertion step, a re-drilling jig 1A having an abutting portion 2 in contact with an inner peripheral surface 11 of the first hole 10 and a supporting portion 3 supporting a side surface 33 of a drilling tool 30 is inserted into the first hole 10 drilled in the first drilling step. In a second drilling step, while supporting the side surface 33 of the drilling tool 30 by the supporting portion 3 of the re-drilling jig 1A inserted into the first hole 10 in the re-drilling jig insertion step, an inner peripheral surface 21 of a second hole 20 newly re-drilled on the inner peripheral surface 11 of the first hole 10 overlaps with the first hole 10 so as to intersect, and the second hole 20 is drilled by the drilling tool 30. Escape of the drilling tool 30 to the already drilled first hole 10 is prevented by the re-drilling jig 1A supporting the side surface 33 of the drilling tool 30 by the supporting portion 3. As a result, re-drilling can be performed in overlapping relation with the already drilled hole.SELECTED DRAWING: Figure 2
【課題】既に削孔した孔に重複して再削孔する。【解決手段】第１削孔工程によりコンクリート構造物Ｃに第１孔１０が削孔される。再削孔用治具挿入工程により、第１削孔工程により削孔された第１孔１０に、第１孔１０の内周面１１に当接する当接部２と、削孔用工具３０の側面３３を支持する支持部３とを有する再削孔用治具１Ａが挿入される。第２削孔工程により、再削孔用治具挿入工程により第１孔１０に挿入された再削孔用治具１Ａの支持部３によって削孔用工具３０の側面３３を支持しつつ、第１孔１０の内周面１１に新たに再削孔する第２孔２０の内周面２１が交差するように第１孔１０に重複して第２孔２０が削孔用工具３０により再削孔される。削孔用工具３０が既に削孔した第１孔１０に逃げることは、支持部３により削孔用工具３０の側面３３を支持する再削孔用治具１Ａによって防がれる。これにより、既に削孔した孔に重複して再削孔することができる。【選択図】図２
RE-DRILLING METHOD FOR CONCRETE STRUCTURE AND RE-DRILLING JIG FOR CONCRETE STRUCTURE
PROBLEM TO BE SOLVED: To re-drill in overlapping relation with an already drilled hole.SOLUTION: A first hole 10 is drilled in a concrete structure C in a first drilling step. In a re-drilling jig insertion step, a re-drilling jig 1A having an abutting portion 2 in contact with an inner peripheral surface 11 of the first hole 10 and a supporting portion 3 supporting a side surface 33 of a drilling tool 30 is inserted into the first hole 10 drilled in the first drilling step. In a second drilling step, while supporting the side surface 33 of the drilling tool 30 by the supporting portion 3 of the re-drilling jig 1A inserted into the first hole 10 in the re-drilling jig insertion step, an inner peripheral surface 21 of a second hole 20 newly re-drilled on the inner peripheral surface 11 of the first hole 10 overlaps with the first hole 10 so as to intersect, and the second hole 20 is drilled by the drilling tool 30. Escape of the drilling tool 30 to the already drilled first hole 10 is prevented by the re-drilling jig 1A supporting the side surface 33 of the drilling tool 30 by the supporting portion 3. As a result, re-drilling can be performed in overlapping relation with the already drilled hole.SELECTED DRAWING: Figure 2
【課題】既に削孔した孔に重複して再削孔する。【解決手段】第１削孔工程によりコンクリート構造物Ｃに第１孔１０が削孔される。再削孔用治具挿入工程により、第１削孔工程により削孔された第１孔１０に、第１孔１０の内周面１１に当接する当接部２と、削孔用工具３０の側面３３を支持する支持部３とを有する再削孔用治具１Ａが挿入される。第２削孔工程により、再削孔用治具挿入工程により第１孔１０に挿入された再削孔用治具１Ａの支持部３によって削孔用工具３０の側面３３を支持しつつ、第１孔１０の内周面１１に新たに再削孔する第２孔２０の内周面２１が交差するように第１孔１０に重複して第２孔２０が削孔用工具３０により再削孔される。削孔用工具３０が既に削孔した第１孔１０に逃げることは、支持部３により削孔用工具３０の側面３３を支持する再削孔用治具１Ａによって防がれる。これにより、既に削孔した孔に重複して再削孔することができる。【選択図】図２
RE-DRILLING METHOD FOR CONCRETE STRUCTURE AND RE-DRILLING JIG FOR CONCRETE STRUCTURE
コンクリート構造物の再削孔方法及びコンクリート構造物の再削孔用治具
YAMANOBE SHINICHI (author) / IWAMOTO TAKUYA (author) / NAKAGAWA KAZUTAKA (author)
2018-09-20
Patent
Electronic Resource
Japanese
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