A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
INSTALLATION METHOD OF COFFERDAM STRUCTURE USED FOR BRIDGE FOOTING REPAIRING AND STRENGTHENING WORK
To provide an installation method of a cofferdam structure used for bridge footing repair and strengthening work allowing the cofferdam structure to be stably lowered into water even at a site in a strong stream.SOLUTION: An installation method of a cofferdam structure at a site where two bridge foots 1, 2 are installed adjacent to each other comprises the step of: constructing the cofferdam structure 3 on the bridge footing 1 to be repaired; installing guides 4 for lowering into water on the bridge footing 1 and the cofferdam structure 3 as well as installing auxiliary guides 5 on the bridge footing 2 not to be repaired and the cofferdam structure 3; lowering the cofferdam structure 3 into water below a bridge for the bridge footing 1 to be repaired using a lowering guide function of both of the auxiliary guide 5 and the guide 4 for lowering into water; using water cut-off means to cut off water in a gap between a bottom part of the cofferdam structure 3 and the bridge footing 1 to be repaired; and discharging the water entered into the cofferdam structure 3 after completion of cutting off the water.SELECTED DRAWING: Figure 1
【課題】水流が強い現場であっても仮締切り構造体を安定的に水中に降下させることが可能な橋脚補修・補強工事に用いる仮締切り構造体の設置工法を提供すること。【解決手段】二本の橋脚１・２が隣接状態に設けられている現場において、工事対象橋脚１に仮締切り構造体３を構築し、工事対象橋脚１と仮締切り構造体３とに水中降下用ガイド４を設置すると共に、工事対象外橋脚２と仮締切り構造体３とに補助ガイド５を設置し、補助ガイド５と前記水中降下用ガイド４との双方の降下ガイド機能を利用して仮締切り構造体３を工事対象橋脚１に対し橋下の水中に降下させ、仮締切り構造体３底部と工事対象橋脚１との間の隙間を止水手段で止水し、止水完了後に仮締切り構造体３内に入り込んでいる水を排水する。【選択図】図１
INSTALLATION METHOD OF COFFERDAM STRUCTURE USED FOR BRIDGE FOOTING REPAIRING AND STRENGTHENING WORK
To provide an installation method of a cofferdam structure used for bridge footing repair and strengthening work allowing the cofferdam structure to be stably lowered into water even at a site in a strong stream.SOLUTION: An installation method of a cofferdam structure at a site where two bridge foots 1, 2 are installed adjacent to each other comprises the step of: constructing the cofferdam structure 3 on the bridge footing 1 to be repaired; installing guides 4 for lowering into water on the bridge footing 1 and the cofferdam structure 3 as well as installing auxiliary guides 5 on the bridge footing 2 not to be repaired and the cofferdam structure 3; lowering the cofferdam structure 3 into water below a bridge for the bridge footing 1 to be repaired using a lowering guide function of both of the auxiliary guide 5 and the guide 4 for lowering into water; using water cut-off means to cut off water in a gap between a bottom part of the cofferdam structure 3 and the bridge footing 1 to be repaired; and discharging the water entered into the cofferdam structure 3 after completion of cutting off the water.SELECTED DRAWING: Figure 1
【課題】水流が強い現場であっても仮締切り構造体を安定的に水中に降下させることが可能な橋脚補修・補強工事に用いる仮締切り構造体の設置工法を提供すること。【解決手段】二本の橋脚１・２が隣接状態に設けられている現場において、工事対象橋脚１に仮締切り構造体３を構築し、工事対象橋脚１と仮締切り構造体３とに水中降下用ガイド４を設置すると共に、工事対象外橋脚２と仮締切り構造体３とに補助ガイド５を設置し、補助ガイド５と前記水中降下用ガイド４との双方の降下ガイド機能を利用して仮締切り構造体３を工事対象橋脚１に対し橋下の水中に降下させ、仮締切り構造体３底部と工事対象橋脚１との間の隙間を止水手段で止水し、止水完了後に仮締切り構造体３内に入り込んでいる水を排水する。【選択図】図１
INSTALLATION METHOD OF COFFERDAM STRUCTURE USED FOR BRIDGE FOOTING REPAIRING AND STRENGTHENING WORK
橋脚補修・補強工事に用いる仮締切り構造体の設置工法
KOBAYASHI HISATO (author) / SASAKI KENICHI (author) / KASUGA HIDEFUMI (author)
2020-04-02
Patent
Electronic Resource
Japanese
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