MANAGEMENT METHOD OF CONCRETE INSTALLATION

• Main Author: KASUYA YUKI
• Format: Patent
• Language: English; Japanese
• Published: 10.09.2020
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

To provide a management method of concrete installation capable of pulling-up a tremie pipe after confirming that concrete is filled on the whole cross section.SOLUTION: A management method of concrete installation comprises: respectively attaching a center portion filling detection sensor 11C1 detecting filling status in a center portion of a pile hole at a position from a lower end portion of a tremie pipe 10 by a lower limit target length La and a center portion filling detection sensor 11C2 detecting filling status in the center portion of the pile hole at a position from the lower end portion of the tremie pipe 10 by an upper limit target length Lb; respectively attaching a plurality of peripheral portion filling detection sensors 12E, 12W, 12S, 12N detecting filling status at a peripheral portion of the pile hole at tip portions of a plurality of protruding arms 14E, 14W, 14S, 14N radially protruding from a position from the lower end portion of the tremie pipe 10 by the upper limit target length Lb; and lifting up the tremie pipe 10 by a length Lc that is the upper limit target length Lb minus the lower limit target length La when detecting concrete filling by all of the filling detection sensors.SELECTED DRAWING: Figure 2 【課題】コンクリートが断面全体に充填されたことを確認した上でトレミー管を引き上げることができるコンクリート打設管理方法を提供する。【解決手段】杭孔の中心部での充填状況を検知する中心部充填検知センサー１１Ｃ１をトレミー管１０の下端部から下限目標長Ｌａの位置に、杭孔の中心部での充填状況を検知する中心部充填検知センサー１１Ｃ２をトレミー管１０の下端部から上限目標長Ｌｂの位置にそれぞれ取り付けると共に、杭孔の周辺部での充填状況を検知する複数の周辺部充填検知センサー１２Ｅ、１２Ｗ、１２Ｓ、１２Ｎをトレミー管１０の下端部から上限目標長Ｌｂの位置から放射状に張り出された複数の張出アーム１４Ｅ、１４Ｗ、１４Ｓ、１４Ｎの先端部にそれぞれ取り付け、充填検知センサーの全てでコンクリートの充填が検知されると、トレミー管１０を上限目標長Ｌｂから下限目標長Ｌａを減算した距離Ｌｃだけ引き上げる。【選択図】図２