Lining tunnel wall made by shield type tunnel excavator
AssigneesTekken Construction Co., Ltd., Minoru Yamamoto
InventorsMinoru Yamamoto, Fumitaka Kumai
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Abstract
A tunnel wall lining method is provided, wherein annular recesses circumferentially are provided in outer periphery of a lining form into which arcuate segments are assembled, a plurality of rows of reinforcing bars are arranged annularly in the respective recesses of the lining form, and a lining is constructed with concrete cast into a space between the tunnel wall and the lining form. The lining thus constructed includes circumferentially extending and radially inwardly projecting beams in which the reinforcing bars are embedded, whereby a lining having a reinforcing structure can be constructed in a simple and economical manner and in a shortened construction period.
Claims10
A method of lining a periperhal tunnel wall made behind a shield type tunnel excavator as said excavator is advanced, the method comprising the steps of assembling a plurality of arcuate segments into an annular lining form, each segment having an arcuate recess for forming annular grooves in the outer periphery of the lining form when said segments are assembled, providing in said annular grooves a plurality of reinforcing bars, disposing said outer periphery having said annular grooves of said lining form to oppose said peripheral tunnel wall, and casting a lining material into a space defined between said peripheral tunnel wall and said outer periphery of the lining form to construct in said space a lining having annular beams circumferentially extending and projecting radially inwardly, said beams having said reinforcing bars embedded therein and acting as reinforcing structure.
Dependencies are inferred from the claim text.