Easily-cuttable tunnel segment structure
US7004679B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 21, 2002 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Nov 21, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D11/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a novel easily-cuttable tunnel segment structure used for the departure of a shield machine from a main tunnel to a branch tunnel or the return to the main tunnel from the branch tunnel, and provides an easily-cuttable tunnel segment structure 1 constructed by connecting a plurality of easily-cuttable tunnel segment pieces 2 in the longitudinal direction of a tunnel, wherein at least an easily-cuttable area 3 is formed by concrete 7 in which easily-cuttable reinforcement members are arranged, and a join disposed at least in the easily-cuttable area 3 in the longitudinal direction has an easily-cuttable join structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.