EP 0309739 B1 19920318 - METHOD FOR CONSTRUCTING A TUNNEL WITH LITTLE EARTH COVER UNDER RAILWAY TRACKS OR THE LIKE
Title (en)
METHOD FOR CONSTRUCTING A TUNNEL WITH LITTLE EARTH COVER UNDER RAILWAY TRACKS OR THE LIKE
Publication
Application
Priority
DE 3733246 A 19871001
Abstract (en)
[origin: EP0309739A2] In the method for producing an underground structure, preferably a tunnel, with little earth cover under railway tracks or the like, the individual concreted structure or tunnel sections are advanced in the timed shifting process after their production. In order to prevent movements in the covering earth and the railway tracks during the digging-out of the earth at the local face and during the advancing of the tunnel sections, the rails, together with the sleepers and ballast foundation, are removed in sections. In a dug-out, flat pit is installed a covering reinforced concrete slab, onto which the ballast bed and the track skeleton are mounted again. The same procedure is followed in neighbouring areas and the reinforced concrete slab has further reinforced concrete slabs concreted onto it until the region through which a tunnel is to be driven is overlapped by a continuous concrete slab. After this concrete slab, which forms a securing means for the track, has been erected, the tunnel sections are advanced underneath said slab. <IMAGE>
IPC 1-7
IPC 8 full level
E21D 9/00 (2006.01)
CPC (source: EP)
E21D 9/005 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL
DOCDB simple family (publication)
EP 0309739 A2 19890405; EP 0309739 A3 19900228; EP 0309739 B1 19920318; AT E73880 T1 19920415; DE 3733246 A1 19890413; DE 3869306 D1 19920423
DOCDB simple family (application)
EP 88113864 A 19880825; AT 88113864 T 19880825; DE 3733246 A 19871001; DE 3869306 T 19880825