Title:
セントルの面板及びセントルの面板の加工方法
Document Type and Number:
Japanese Patent JP7164195
Kind Code:
B2
Abstract:
To prevent deterioration of the appearance quality on a surface of a concrete lining of a tunnel.SOLUTION: An arch center 11 for forming tunnel lining concrete 101 is constituted by forms 12-14. The forms 12-14 have concrete forming surfaces 122, 132, 142 on their side surfaces. In the concrete molding surfaces 122, 132, 142 and the like, a hardened portion having a higher hardness than other portions of the concrete molding surfaces 122, 132, 142 is formed on a lower side of a placing port.SELECTED DRAWING: Figure 4
Inventors:
Tsuchida Minoru
Application Number:
JP2019230310A
Publication Date:
November 01, 2022
Filing Date:
December 20, 2019
Export Citation:
Assignee:
Ito Co., Ltd.
International Classes:
E21D11/10; E04G11/34
Domestic Patent References:
| JP2001115787A | ||||
| JP62059759A | ||||
| JP62296062A | ||||
| JP8240001A | ||||
| JP2000356036A | ||||
| JP2006207277A | ||||
| JP2001020684A |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda