Arcuate precast tunnel lining segments

Details Arcuate precast tunnel lining segments Arcuate precast tunnel lining segments

E - Fixed Constructions

21

D

61/64

E21D 11/00 (2006.01) E21D 11/05 (2006.01) E21D 11/08 (2006.01)

Patent

CA 2011626

There is described an arcuate pre-cast concrete tunnel lining segment having at least one compressible insert extending through the thickness of the segment between opposing circumferential edges thereof. Connecting devices, which may comprise a plurality of bolts cast in the segment portions on either side of the insert and extending through the insert, hold the segment portions on either side of the insert in alignment and against separation. The connecting devices permit the segment portions to move together collapsing the insert when subjected to an excess external load.

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