The excavation process which digs the application manner of the cast-in-place concrete pile and the reinforced basket

摘要

PROBLEM TO BE SOLVED: To provide a method for construction of a cast-in-place concrete pile, which can increase concrete strength of a pile head part by eliminating variations in the concrete strength of the pile head part.;SOLUTION: A plurality of rod-shaped high-frequency vibrators 12, which imparts vibrations to concrete, are provided. A plurality of supporting implements 16 are pre-attached to an upper part of a cylindrical cage 14 which is to be installed in a drilled hole H. The cage 14, to which the supporting implements 16 are attached, is installed in the drilled hole H, and the high-frequency vibrators 12 are supported by the supporting implements 16 before the placing of the concrete. Subsequently, the concrete is placed in the hole H; directly after that, the high-frequency vibrators 12 are started so as to vibrate the concrete of the pile head part; and after that, the high-frequency vibrators 12 are pulled upward so that a hardening process can be performed.;COPYRIGHT: (C)2005,JPO&NCIPI