EP 0663470 B1 19970326 - Process for obtaining a superstructure for railway tracks
Title (en)
Process for obtaining a superstructure for railway tracks
Title (de)
Verfahren zur Herstellung eines Oberbaus für Eisenbahngleise
Title (fr)
Procédé d'obtention d'une superstructure de voies ferrées
Publication
Application
Priority
- DE 4401260 A 19940118
- DE 4439894 A 19941108
Abstract (en)
[origin: EP0663470A1] The structure of a railway permanent way, esp. for high speed rail traffic and heavy loadings, has a concrete trough (2) below the rails (3) of a reinforced concrete material. It has two laying surfaces (5) for the sleepers, projecting over the sole surface plane of the trough (2). When the track has been aligned, the hollow zones are filled with a compressed ballast (9) together with a mortar suspension (14), to give a rigid ballast bed (9a). Pref. the concrete trough (2) has a min. concrete rating of B 25. The sleeper support surfaces (5) have a defined laying surface, at least 20 mm over the sole surface plane. A barrier agent (10) is a sprayed material such as bitumen, at the inner surface (2a) of the trough (2) to prevent durable adhesion contact between the mortar suspension (14), or it is a thin polyethylene film which allows force transmission between the ballast bed (9a) and the inner surface (2a) of the concrete trough (2).
IPC 1-7
IPC 8 full level
E01B 1/00 (2006.01); E01B 29/00 (2006.01)
CPC (source: EP)
E01B 1/001 (2013.01); E01B 1/007 (2013.01); E01B 1/008 (2013.01); E01B 29/005 (2013.01); E01B 1/002 (2013.01); E01B 2204/01 (2013.01); E01B 2204/03 (2013.01); E01B 2204/07 (2013.01); E01B 2204/10 (2013.01); E01B 2204/13 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0663470 A1 19950719; EP 0663470 B1 19970326; AT E150822 T1 19970415; DE 4439894 A1 19960515; DE 4439894 C2 19980409; DE 59402227 D1 19970430
DOCDB simple family (application)
EP 94120161 A 19941220; AT 94120161 T 19941220; DE 4439894 A 19941108; DE 59402227 T 19941220