A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WATER-STOP METHOD FOR COFFERDAM USED IN BRIDGE PIER MAINTENANCE AND STRENGTHENING WORKS
To provide a water-stop method for a cofferdam structure used in bridge pier maintenance and strengthening works, in which water stop woks for the cofferdam structure can be easily carried out above water without requiring underwater works by divers.SOLUTION: A cylindrical cofferdam structure 3 is built surrounding the outer periphery of a bridge pier 1 at an unsubmerged part in the upper area of the bridge pier 1. The cofferdam structure 3 is lowered into water under the bridge for the bottom part of the cofferdam structure 3 to settle on a bed protection 2 at the bottom part of the bridge pier 1. An weight-attached water-stop sheet 16 is deployed from a water-stop work platform 15 arranged at an unsubmerged part of the cofferdam structure 3 onto the aforesaid bed protection 2 underwater to stop water by blocking the gap between the bottom of the cofferdam structure 3 and the top surface of the bed protection 2 with the weight-attached water-stop sheet 16 on the bed protection 2 being pushed by the water flow pressure.SELECTED DRAWING: Figure 11
【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上方の非水没箇所で、橋脚１の外周を囲むように設置される筒状の仮締切り構造体３を構築し、この仮締切り構造体３を橋下の水中に降下させて仮締切り構造体３の下部を橋脚１下部の護床部２上に載置し、この仮締切り構造体３の水上に表出する部位に設けられている止水作業用足場15から錘付止水シート16を水中の前記護床部２上に投下し、この護床部２上の錘付止水シート16が水流圧により仮締切り構造体３の下部と護床部２上面との間の隙間を塞いで止水する。【選択図】図１１
WATER-STOP METHOD FOR COFFERDAM USED IN BRIDGE PIER MAINTENANCE AND STRENGTHENING WORKS
To provide a water-stop method for a cofferdam structure used in bridge pier maintenance and strengthening works, in which water stop woks for the cofferdam structure can be easily carried out above water without requiring underwater works by divers.SOLUTION: A cylindrical cofferdam structure 3 is built surrounding the outer periphery of a bridge pier 1 at an unsubmerged part in the upper area of the bridge pier 1. The cofferdam structure 3 is lowered into water under the bridge for the bottom part of the cofferdam structure 3 to settle on a bed protection 2 at the bottom part of the bridge pier 1. An weight-attached water-stop sheet 16 is deployed from a water-stop work platform 15 arranged at an unsubmerged part of the cofferdam structure 3 onto the aforesaid bed protection 2 underwater to stop water by blocking the gap between the bottom of the cofferdam structure 3 and the top surface of the bed protection 2 with the weight-attached water-stop sheet 16 on the bed protection 2 being pushed by the water flow pressure.SELECTED DRAWING: Figure 11
【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上方の非水没箇所で、橋脚１の外周を囲むように設置される筒状の仮締切り構造体３を構築し、この仮締切り構造体３を橋下の水中に降下させて仮締切り構造体３の下部を橋脚１下部の護床部２上に載置し、この仮締切り構造体３の水上に表出する部位に設けられている止水作業用足場15から錘付止水シート16を水中の前記護床部２上に投下し、この護床部２上の錘付止水シート16が水流圧により仮締切り構造体３の下部と護床部２上面との間の隙間を塞いで止水する。【選択図】図１１
WATER-STOP METHOD FOR COFFERDAM USED IN BRIDGE PIER MAINTENANCE AND STRENGTHENING WORKS
橋脚補修・補強工事に用いる仮締切り構造体の止水工法
KOBAYASHI HISATO (author) / SASAKI KENICHI (author) / KASUGA HIDEFUMI (author)
2019-10-24
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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