Abstract: The rail sleeper (10) is provided with a sleeper body (12) comprising one rail contact area (16) on each of the opposing ends thereof, within which the sleeper body (12) is widened. A rail (24) may be fixed in each rail contact area (16) by means of a hold-down element (28) able to grip a rail foot. Each rail contact area (16) comprises three rail contact surfaces (18) adjacent to one another in the extension of the rail (24). At least one hold-down element (28) is disposed between and above at least one partial region of respective adjacent rail contact surfaces (18) of each rail contact area (16). The sleeper body (12) is free of reinforcement elements within each rail contact area (16) on both sides of the intermediate spaces between adjacent rail contact surfaces (18).

Abstract: The rail sleeper (10) is provided with a sleeper body (12) comprising one rail contact area (16) on each of the opposing ends thereof, within which the sleeper body (12) is widened. A rail (24) may be fixed in each rail contact area (16) by means of a hold-down element (28) able to grip a rail foot. Each rail contact area (16) comprises three rail contact surfaces (18) adjacent to one another in the extension of the rail (24). At least one hold-down element (28) is disposed between and above at least one partial region of respective adjacent rail contact surfaces (18) of each rail contact area (16). The sleeper body (12) is free of reinforcement elements within each rail contact area (16) on both sides of the intermediate spaces between adjacent rail contact surfaces (18).

Abstract: Modern D.C.-tractioned trains and track circuit signal systems as well as high load trains need a special track construction. A new concrete cross sleeper system is provided for high load and high velocity tracks as well as for urban rapid transit systems comprising rails and sleepers having center part, connected to bar shaped ends and having reinforcing means.On the bar shaped ends two rail seats for each rail are positioned having elastic, electrically non-conducting plastic pads. The rails are fastened onto the rail seat by special tension means clamping the foot of the rail and fixed into plugs in the sleepers. This feature allows a triple point fixing of the rail at each sleeper end. Tracks on asphalt pavement may be secured by anchor device of the general type as sold under the trademark NELSON.The new track construction decreases the intermittent load of the rail/sleeper system and avoids trouble in track circuit signal systems existing in normally used prestressed concrete sleepers (FIG. 1).

Abstract: A railway switch is mounted on y-shaped sleepers. All sleepers in the switch have a medium portion of equal slightly s-shaped configuration and length. The length of the straight and parallel ends depends on the position of the individual sleeper in the switch. The sleepers extend alternately from one outer rail in the direction to the other outer rail. The crossing piece is supported by y-shaped sleepers which underlie only the crossing piece and alternately one of the outer rails in the switch. If the switch comprises a straight and a curved line, all sleepers supporting the outer straight rail are arranged at a right angle to the straight line and protrude outwardly over the straight rail in the same length. Preferably the sleepers are composed of two s-shaped I-beam steel profiles and additional shorter I-beam steel profiles at the bifurcated straight ends, all pairs of adjacent I-beams being connected at a distance forming a slit for inserting a coach screw.

Abstract: A multiplicity of step-shaped sleepers or ties each having two straight end segments interconnected by a middle portion inclined at obtuse angles with respect to the end segments are each joined at their respective end segments to two adjacent sleepers by means of rib plates to form a zig-zag sleeper network underlying a pair of parallel spaced-apart rails in a railway roadbed assembly. The sleepers are formed from I-beam profiles; a plurality of channel profiles extending parallel to the rails below the sleeper network are connected to the rib plates by bolts traversing the sleepers, the channels being embedded in the ground or in a concrete track bed to prevent lateral displacement of the railway assembly. A method of forming Y-shaped ties includes the bending of I-beam profiles in a press die assembly, welding the profiles together and filling interbeam spaces with a weight-increasing corrosion-retarding material such as concrete.