GROUT METHOD FOR CAST-IN-PLACE CONCRETE PILE

摘要

PROBLEM TO BE SOLVED: To provide a grout method for a cast-in-place concrete pile capable of grouting on a side face of the cast-in-place concrete pile at a desired depth where a hard ground definitely appears and effectively increasing a bearing capacity and a settlement rigidity of the concrete pile by a simple method.;SOLUTION: A reinforced frame 1 of a cast-in-place concrete pile is erected in a drilling hole H in a state where multiple filling pipes 2 used for a double packer method are installed with a space between adjacent filling pipes in a circumferential direction at the circumference of the reinforced frame. After concrete 8 is installed in the drilling hole H and cured, a crack is formed in the concrete 8 by ejecting pressure water from the filling pipes 2 and a grout material is pressured to be injected into the filling pipes 2. Thus, the grout material 9 is ejected from multiple discharge holes 2b drilled in outer pipes 2a of the filling pipes 2 into the ground through the crack and is charged to the crack.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2016,JPO&INPIT