Title:
TUNNEL SHORING AND SHORING CONNECTION METHOD
Document Type and Number:
Japanese Patent JP2023120913
Kind Code:
A
Abstract:
To provide technology related to a tunnel shoring that is improved compared to conventional technology.SOLUTION: A tunnel shoring comprises a first steel shoring and a second steel shoring, top ends of which are interconnected while being held by a pair of hands in an erector device. The first steel shoring has a first top end joint plate provided at the top end and a female connecting portion recessed in a single location of the first top end joint plate. The second steel shoring has a second top end joint plate provided at the top end, and a male connecting portion recessed in the single location and locked by being inserted into the female connecting portion. The female connecting portion is eccentrically arranged at a position near a side edge with respect to the center position in the width direction of the first top end joint plate so as not to interfere with a web of the first steel shoring. The male connecting portion is eccentrically arranged at a position near a side edge with respect to the center position in the width direction of the second top end joint plate so as not to interfere with a web of the second steel shoring.SELECTED DRAWING: Figure 5
Inventors:
MIZUTANI KAZUHIKO
Application Number:
JP2022024056A
Publication Date:
August 30, 2023
Filing Date:
February 18, 2022
Export Citation:
Assignee:
MAEDA CONSTRUCTION
International Classes:
E21D11/40; E21D11/18
Attorney, Agent or Firm:
Patent Attorney Corporation Shuwa Patent Office