To provide a method for protecting a hole wall and boring a pile hole for a cast-in-place pile simultaneously in parallel.
An inventive method includes: connecting a plurality of cylindrical pipes (14) together, each of which has a diameter smaller than that of a pile hole and a length equal to or smaller than the depth of a bored part, and dropping them along a hole wall (15) simultaneously in parallel with boring the pile hole for a cast-in-place pile; and filling a back-fill material (16) in a clearance between the hole wall and the cylindrical pipes to bring the pipes into close contact with the wall. On the periphery of the tip of the lowermost cylindrical pipe, a seal material is attached, which is in contact with the hole wall when dropping the pipes and thus prevents the back-fill material from escaping.
TANIGUCHI YOSHINORI
TAKEYA TSUTOMU
IKEMOTO HIROFUMI
NAKAGAWA YURI
TAKASAKI HIDEAKI
OTSUKA TAKAHITO
SUZUKI HIROYUKI
HOSHIKAWA TSUTOMU
| JP2010248714A | 2010-11-04 | |||
| JPH10169360A | 1998-06-23 | |||
| JP2001241287A | 2001-09-04 | |||
| JPH04302693A | 1992-10-26 | |||
| JP3156774U | 2010-01-21 | |||
| JPH11166387A | 1999-06-22 | |||
| JP2010248714A | 2010-11-04 | |||
| JPH10169360A | 1998-06-23 | |||
| JP2001241287A | 2001-09-04 |
Takehiko Katayose
Takashi Koyama
Teiji Tanaka