Easily-cuttable tunnel segment structure

Details Easily-cuttable tunnel segment structure Easily-cuttable tunnel segment structure

2006-02-28

2006-02-28

Safavi, Michael (Department: 3673)

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

C405S135000, C405S153000

Reexamination Certificate

active

07004679

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 structure1constructed by connecting a plurality of easily-cuttable tunnel segment pieces2in the longitudinal direction of a tunnel, wherein at least an easily-cuttable area3is formed by concrete7in which easily-cuttable reinforcement members are arranged, and a join disposed at least in the easily-cuttable area3in the longitudinal direction has an easily-cuttable join structure.

REFERENCES:
patent: 967264 (1910-08-01), Sydney
patent: 3818710 (1974-06-01), Chlumecky
patent: 4545701 (1985-10-01), Tsuzuki
patent: 6328501 (2001-12-01), Gimbert
patent: 2751636 (1998-05-01), None

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