| 摘要 |
PURPOSE: A tip pressing device for checking and enhancing the tip bearing force of a cast-in-place concrete pile using a bellows type expansion member, a cast-in-place concrete pile with the same, and a construction method thereof are provided to enhance the tip bearing force of a cast-in-place concrete pile and to reduce the costs and time for a tip bearing force test of a cast-in-place concrete pile. CONSTITUTION: A tip pressing device for a cast-in-place concrete pile comprises an upper plate(11) with a filler injection port(110) for injecting a filler, a pipe-shaped vertical member(13) coupled with the upper plate, and a bellows type expansion member(20) with a bellows type side wall. The filler injection port is connected to the bellows type expansion member. The vertical member is formed with a side injection hole(12) for injecting a tip grouting material(32). An outer space open toward the bottom of an underground hole(10) is formed by the underside of the bellows type expansion member and the vertical member. |
