Title:
トンネル内の支保工の構造および支保工の設置方法
Document Type and Number:
Japanese Patent JP6791586
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the efficiency of the installation work of a support in a tunnel.SOLUTION: A cap nut 13 is fixed to an upper surface of a connection plate 11 of an upper support member 10 at a connection portion of support members 10, 20 arranged in the upper and lower direction. Even if an inner side surface of the upper support member 10 is covered with a concrete layer C2, the upper and lower support members 10, 20 are connected each other by threading a bolt 26 into the cap nut 13 through bolt holes 22, 12 from a rear side of a connection plate 21 of the lower supporting member 20. As a result, it is possible to omit a chipping operation of the concrete layer C2 and removing operation of a box at the time of covering the concrete layer C2, so that the efficiency of the installation work of a support S can be improved.SELECTED DRAWING: Figure 9
Inventors:
Kurata Katsura
Satoru Shiogai
Akitake Matsuo
Kazuki Noguchi
Daisuke Morita
Satoru Shiogai
Akitake Matsuo
Kazuki Noguchi
Daisuke Morita
Application Number:
JP2017020682A
Publication Date:
November 25, 2020
Filing Date:
February 07, 2017
Export Citation:
Assignee:
Okumura Gumi Co., Ltd.
International Classes:
E21D11/24; E21D11/08; E21D11/10
Domestic Patent References:
| JP2005016167A | ||||
| JP7174128A | ||||
| JP10169387A |
Foreign References:
| US4318637 |
Attorney, Agent or Firm:
Toshiro Ohata