A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To enable cutting of a toric cutting section with relatively wider width.SOLUTION: A boring method bores a hole by cutting a wall surface of a concrete structure having an opening from inner side into a toric shape. THe boring method uses first and second cutting blades, which can be separated at least at one point in a circumferential direction. Cutting is implemented by fitting the first cutting blade to a rotation drive part, driving the rotation of the first cutting blade around a core centering device 130 (support shaft) that is supported on both sides of the first and second cutting blades in an axial direction of the rotation drive, subsequently the first and second cutting blades are separated and replaced at least at one point in circumferential direction in a state where the centering device 130 is fixed, and cutting is implemented by using the second cutting blade.SELECTED DRAWING: Figure 9
【課題】円環状の切削領域の幅が比較的大きな切削を可能にする。【解決手段】開口を有するコンクリート構造物の壁面を内部側から円環状に切削して穿孔する穿孔方法において、円周方向の少なくとも１カ所で離間させることが可能な第１、第２の切削刃を用い、第１の切削刃を回転駆動部に取り付け、回転駆動の軸心方向における第１、第２の切削刃の両側で支持される芯出し装置１３０（支持軸）の回りに回転駆動させて切削を行った後に、芯出し装置１３０が固定された状態で第１、第２の切削刃を円周方向の少なくとも１カ所で離間させて交換し第２の切削刃によって切削を行う。【選択図】図９
PROBLEM TO BE SOLVED: To enable cutting of a toric cutting section with relatively wider width.SOLUTION: A boring method bores a hole by cutting a wall surface of a concrete structure having an opening from inner side into a toric shape. THe boring method uses first and second cutting blades, which can be separated at least at one point in a circumferential direction. Cutting is implemented by fitting the first cutting blade to a rotation drive part, driving the rotation of the first cutting blade around a core centering device 130 (support shaft) that is supported on both sides of the first and second cutting blades in an axial direction of the rotation drive, subsequently the first and second cutting blades are separated and replaced at least at one point in circumferential direction in a state where the centering device 130 is fixed, and cutting is implemented by using the second cutting blade.SELECTED DRAWING: Figure 9
【課題】円環状の切削領域の幅が比較的大きな切削を可能にする。【解決手段】開口を有するコンクリート構造物の壁面を内部側から円環状に切削して穿孔する穿孔方法において、円周方向の少なくとも１カ所で離間させることが可能な第１、第２の切削刃を用い、第１の切削刃を回転駆動部に取り付け、回転駆動の軸心方向における第１、第２の切削刃の両側で支持される芯出し装置１３０（支持軸）の回りに回転駆動させて切削を行った後に、芯出し装置１３０が固定された状態で第１、第２の切削刃を円周方向の少なくとも１カ所で離間させて交換し第２の切削刃によって切削を行う。【選択図】図９
BORING METHOD USING BORING DEVICE
穿孔装置を用いた穿孔方法
INAGAKI HIROHISA (author)
2017-02-09
Patent
Electronic Resource
Japanese
Nothing Boring about Boring and Jacking
| British Library Conference Proceedings | 2020