A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CUTOFF METHOD AND WATER CUTOFF WALL STRUCTURE
PROBLEM TO BE SOLVED: To form a water cutoff wall structure in a short construction period by improving workability.SOLUTION: In a cutoff method for providing a workplace by discharging water on the inside of a water cutoff wall structure 70 formed by installing a ring body 8 so as to surround via an interval around a bridge pier 2 of submerging a part, a scaffold 5 of an outer diameter smaller than an inner diameter of the water cutoff wall structure 70 is installed on an outer surface of the bridge pier 2 between a water surface 6 and a lifting device 4 installed in a part of a bridge girder part 3 positioned on the water surface 6, and a ring body 7a with buoyancy for installing a float 20 in the ring body 8 for reducing weight to the lifting device 4, is lowered downward in the vertical direction more than the scaffold 5, and after forming the water cutoff wall structure 70 by further connecting a separate ring body 8 or a separate ring body 7b with buoyancy so as to stack in the vertical direction on an upper end part exposed from the water surface of its ring body 7a with buoyancy, the water cutoff wall structure 70 is sunk in the water, and the inside water when installed in a water bottom part is discharged.SELECTED DRAWING: Figure 9
【課題】施工性を向上して短い施工期間で止水壁構造体を形成できるようにする。【解決手段】一部が水没した橋脚2の周囲に間隔を介して取り囲むようにリング体8を設置して形成した止水壁構造体70の内側の水を排出して作業場を提供する締切工法であって、水面6上に位置する橋桁部3の部分に設置した昇降装置4と水面6との間の橋脚2の外面に止水壁構造体70の内径よりも小さい外径の足場5を設置し、昇降装置4に対する重量を軽減するためのフロート20がリング体8に設置された浮力付リング体7aを足場5よりも鉛直方向下方に降下させ、その浮力付リング体7aの水面から露出する上端部に、さらに別のリング体8または別の浮力付リング体7bを鉛直方向に積み重ねるように連結して止水壁構造体70を形成した後、止水壁構造体70を水中に沈めて水底部に設置したときの内側の水を排出する。【選択図】図９
CUTOFF METHOD AND WATER CUTOFF WALL STRUCTURE
PROBLEM TO BE SOLVED: To form a water cutoff wall structure in a short construction period by improving workability.SOLUTION: In a cutoff method for providing a workplace by discharging water on the inside of a water cutoff wall structure 70 formed by installing a ring body 8 so as to surround via an interval around a bridge pier 2 of submerging a part, a scaffold 5 of an outer diameter smaller than an inner diameter of the water cutoff wall structure 70 is installed on an outer surface of the bridge pier 2 between a water surface 6 and a lifting device 4 installed in a part of a bridge girder part 3 positioned on the water surface 6, and a ring body 7a with buoyancy for installing a float 20 in the ring body 8 for reducing weight to the lifting device 4, is lowered downward in the vertical direction more than the scaffold 5, and after forming the water cutoff wall structure 70 by further connecting a separate ring body 8 or a separate ring body 7b with buoyancy so as to stack in the vertical direction on an upper end part exposed from the water surface of its ring body 7a with buoyancy, the water cutoff wall structure 70 is sunk in the water, and the inside water when installed in a water bottom part is discharged.SELECTED DRAWING: Figure 9
【課題】施工性を向上して短い施工期間で止水壁構造体を形成できるようにする。【解決手段】一部が水没した橋脚2の周囲に間隔を介して取り囲むようにリング体8を設置して形成した止水壁構造体70の内側の水を排出して作業場を提供する締切工法であって、水面6上に位置する橋桁部3の部分に設置した昇降装置4と水面6との間の橋脚2の外面に止水壁構造体70の内径よりも小さい外径の足場5を設置し、昇降装置4に対する重量を軽減するためのフロート20がリング体8に設置された浮力付リング体7aを足場5よりも鉛直方向下方に降下させ、その浮力付リング体7aの水面から露出する上端部に、さらに別のリング体8または別の浮力付リング体7bを鉛直方向に積み重ねるように連結して止水壁構造体70を形成した後、止水壁構造体70を水中に沈めて水底部に設置したときの内側の水を排出する。【選択図】図９
CUTOFF METHOD AND WATER CUTOFF WALL STRUCTURE
締切工法および止水壁構造体
OKI KAZUYOSHI (author) / TSURUMI AKITOSHI (author) / ASAI NOBUHIDE (author) / WADA HIROSHI (author)
2017-05-25
Patent
Electronic Resource
Japanese
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