Title:
地盤改良体の造成方法およびケーシングパイプ
Document Type and Number:
Japanese Patent JP6807285
Kind Code:
B2
Abstract:
To provide a method for creating a soil improvement body which enables safe and efficient construction and can surely stabilize a porous wall, and a casing pipe.SOLUTION: A steel casing pipe 3 having such a double pipe structure that a tip 15 of an outer casing 5 is longer than a tip 17 of an inner casing 7 is used. In the casing pipe 3, an improvement rod 31 is provided between the outer casing 5 and the inner casing 7, and a nozzle 33 is provided on the improvement rod 31 with a height between the tip 15 of the outer casing 5 and the tip of the inner casing 7. In order to create a soil improvement body 21, the method includes first rotatively press-fitting the casing pipe 3 into a predetermined depth 19 of a ground 1, and then jetting high-pressure cement milk and a jet 35 of compressed air from the nozzle 33 to a circumferential direction of the casing pipe 3 and pulling up the casing pipe 3 from the ground 1 while rotating the casing pipe.SELECTED DRAWING: Figure 2
Inventors:
Fujisaki victory
Akiyama Kouyuki
Hideo Tanaka
Mamoru Sakamoto
Suguru Ito
Koji Miki
Hiroyuki Abe
Tsutomu Tsuchiya
Tatsuo Yoshida
Akiyama Kouyuki
Hideo Tanaka
Mamoru Sakamoto
Suguru Ito
Koji Miki
Hiroyuki Abe
Tsutomu Tsuchiya
Tatsuo Yoshida
Application Number:
JP2017139316A
Publication Date:
January 06, 2021
Filing Date:
July 18, 2017
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
Chemical Grout Co., Ltd.
Chemical Grout Co., Ltd.
International Classes:
E02D3/12
Domestic Patent References:
| JP59024028A | ||||
| JP6002326A | ||||
| JP2009280966A | ||||
| JP49124810A | ||||
| JP2016217119A |
Attorney, Agent or Firm:
Seiichi Inoue