A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CUT-OFF METHOD OF COFFERDAM STRUCTURE USED FOR BRIDGE PIER MAINTENANCE AND REINFORCING WORK
PROBLEM TO BE SOLVED: To provide a cut-off method of a cofferdam structure used for bridge pier maintenance and reinforcing work which can easily perform the cut-off work of the cofferdam structure without the necessity of underwater work by a diver.SOLUTION: In a cofferdam structure 2 which is constructed and arranged in a non-submerged point in an upper part of a bridge pier 1, a cut-off sheet 4 is arranged so as to cover a bottom of the structure, a hole edge sheet 6 folded to an upper side of a center hole 5 of the cut-off sheet 4 is arranged in a gap 7 between a penetration hole 3 of the bottom of the cofferdam structure 2 and the bridge pier 1, a fastening cable 8 for making the hole edge sheet 6 firmly adhere to an external peripheral face of the bridge pier 1 is wound to the outside of the hole edge sheet 6, a pull-moving part 9 of the fastening cable 8 is arranged at an upper part of the cofferdam structure 2, the cofferdam structure 2 is descended into water below a bridge, the hole edge sheet 6 is made to firmly adhere to an external peripheral face of the bridge pier 1 by pull-moving the pull-moving part 9 of the fastening cable 8 in an upper position than a water surface 10 below the bridge, and water is cut off.SELECTED DRAWING: Figure 8
【課題】潜水士による水中作業を要することなく、仮締切り構造体の止水作業が水上で容易に行われる橋脚補修・補強工事に用いる仮締切り構造体の止水工法を提供すること。【解決手段】橋脚１の上方の非水没箇所で構築されて設置される仮締切り構造体２は、その底部を覆うように止水シート４が設けられると共に、止水シート４の中央孔部５の上側に折り返した孔縁シート部６が仮締切り構造体２底部の貫通孔部３と橋脚１の間の間隙部７に配設され、孔縁シート部６の外側に、孔縁シート部６を橋脚１の外周面に密着させる締付索８が巻回され、締付索８の引動部９が仮締切り構造体２の上部に設けられており、仮締切り構造体２を橋下の水中に降下させ、締付索８の引動部９を橋下の水面10より上方位置で引動することにより孔縁シート部６を橋脚１の外周面に密着させて止水する。【選択図】図８
CUT-OFF METHOD OF COFFERDAM STRUCTURE USED FOR BRIDGE PIER MAINTENANCE AND REINFORCING WORK
PROBLEM TO BE SOLVED: To provide a cut-off method of a cofferdam structure used for bridge pier maintenance and reinforcing work which can easily perform the cut-off work of the cofferdam structure without the necessity of underwater work by a diver.SOLUTION: In a cofferdam structure 2 which is constructed and arranged in a non-submerged point in an upper part of a bridge pier 1, a cut-off sheet 4 is arranged so as to cover a bottom of the structure, a hole edge sheet 6 folded to an upper side of a center hole 5 of the cut-off sheet 4 is arranged in a gap 7 between a penetration hole 3 of the bottom of the cofferdam structure 2 and the bridge pier 1, a fastening cable 8 for making the hole edge sheet 6 firmly adhere to an external peripheral face of the bridge pier 1 is wound to the outside of the hole edge sheet 6, a pull-moving part 9 of the fastening cable 8 is arranged at an upper part of the cofferdam structure 2, the cofferdam structure 2 is descended into water below a bridge, the hole edge sheet 6 is made to firmly adhere to an external peripheral face of the bridge pier 1 by pull-moving the pull-moving part 9 of the fastening cable 8 in an upper position than a water surface 10 below the bridge, and water is cut off.SELECTED DRAWING: Figure 8
【課題】潜水士による水中作業を要することなく、仮締切り構造体の止水作業が水上で容易に行われる橋脚補修・補強工事に用いる仮締切り構造体の止水工法を提供すること。【解決手段】橋脚１の上方の非水没箇所で構築されて設置される仮締切り構造体２は、その底部を覆うように止水シート４が設けられると共に、止水シート４の中央孔部５の上側に折り返した孔縁シート部６が仮締切り構造体２底部の貫通孔部３と橋脚１の間の間隙部７に配設され、孔縁シート部６の外側に、孔縁シート部６を橋脚１の外周面に密着させる締付索８が巻回され、締付索８の引動部９が仮締切り構造体２の上部に設けられており、仮締切り構造体２を橋下の水中に降下させ、締付索８の引動部９を橋下の水面10より上方位置で引動することにより孔縁シート部６を橋脚１の外周面に密着させて止水する。【選択図】図８
CUT-OFF METHOD OF COFFERDAM STRUCTURE USED FOR BRIDGE PIER MAINTENANCE AND REINFORCING WORK
橋脚補修・補強工事に用いる仮締切り構造体の止水工法
SATO YUUKI (author) / MURAKAMI KOJI (author) / KASUGA HIDEFUMI (author)
2018-03-01
Patent
Electronic Resource
Japanese
COFFERDAM STRUCTURE USED FOR BRIDGE PIER MAINTENANCE AND REINFORCEMENT WORK
| European Patent Office | 2020
| European Patent Office | 2018
INSTALLATION METHOD FOR COFFERDAM STRUCTURE USED IN BRIDGE PIER MAINTENANCE AND STRENGTHENING WORKS
| European Patent Office | 2019
INSTALLATION METHOD FOR COFFERDAM STRUCTURE USED FOR BRIDGE PIER REPAIR AND STRENGTHENING WORK
| European Patent Office | 2020
WATER-STOP METHOD FOR COFFERDAM USED IN BRIDGE PIER MAINTENANCE AND STRENGTHENING WORKS
| European Patent Office | 2019