Abstract: A railroad tie formed of a polymeric or polymeric composite material and configured for enhanced mechanical interaction with an underlying ballast. The tie includes at least a top longitudinal surface, a pair of side longitudinal surfaces, a bottom longitudinal surface, and two end faces. At least the bottom longitudinal surface includes a plurality of indentations formed along a length thereof. Additionally, the tie includes at least one serrated edge portion having a plurality of serrations, the at least one serrated edge portion formed along at least part of the longitudinal length of the tie at an edge between at least one of the side longitudinal surfaces and the bottom longitudinal surface to provide for enhanced mechanical interaction with the ballast.

Abstract: This cross-member system with shell (10) for a railroad track, intended to be wedged in an apron of the railroad track, of the type including a cross-member (12) having a lower face (20), and an upper face (22) that is intended to receive a rail fastening system (14), and a shell, is characterized in that the shell envelops substantially the entire cross-member so as to define an inner volume for receiving the cross-member that is sealed against outside attacks.

Abstract: A precast plinth for supporting an associated object, such as a rail of a railway track, includes an elongated body made of a material including concrete. The plinth includes an upper face, a lower face, a first side face, a second side face and first and second end faces. The first and second side faces taper away from each other from the upper face to the lower face. A leveling hole can extend from the upper face to the lower face with a threaded leveling insert located in the leveling hole. A grout hole can extend from the upper face to a lower face in a spaced manner from the leveling hole.

Abstract: A precast plinth for supporting an associated object, such as a rail of a railway track, includes an elongated body made of a material including concrete. The plinth includes an upper face, a lower face, a first side face, a second side face and first and second end faces. The first and second side faces taper away from each other from the upper face to the lower face. A leveling hole can extend from the upper face to the lower face with a threaded leveling insert located in the leveling hole. A grout hole can extend from the upper face to a lower face in a spaced manner from the leveling hole.

Abstract: Concrete sleeper with fixing elements incorporated, insertable or inserted into a sleeper body for fixing rails, wherein the sleeper body of the concrete sleeper (1, 18) has at least four apertures for fixing elements per rail (5) to be fixed, the apertures being arranged in pairs to the left and right of the rail support area (2), the two apertures for fixing elements of one pair being arranged staggered in the longitudinal direction of the concrete sleeper (1, 18).

Abstract: A biblock or multiblock transverse member is provided with concrete blocks which includes plates connected to each other with the aid of an incorporated reinforcement elements. The transverse member consists of many individual prefabricated blocks whose two reinforcement elements are interconnected, more particularly welded.

Abstract: A guideway structure for the high-speed track-bound transportation is composed of the lower-layer main load-bearing girders and the guideway-surface structure elements. The structural elements are connected by the steel elements at the functional zones and the reinforced concrete plates on the guideway body to form an integral. The invention is one of the guideway structures especially suitable for the guideway structure across a river of medium- or small-width.

Abstract: A two-block concrete railroad tie for a fixed rail carriageway with an at least partially continuous reinforcement, which is exposed between the blocks and, after alignment, engages the sealing compound over a supporting layer, becoming anchored in it, the blocks being provided with a mounting surface, which is shortened in the longitudinal direction and from which slanting side surfaces extend upward at least at the front side.

Abstract: Trackway for land traffic vehicles, preferably for magnetic levitation tracks, with pre-assembled trackway beams arranged on substructures produced by in situ concrete construction or pre-assembled construction. The trackway beams include one or more hollow, reinforced longitudinal pre-stressed concrete beams and trackway panels, which extend transversely to the pavement and protrude on both sides beyond the pre-stressed concrete beams. The trackway panels are separate components from the concrete beams. The concrete beams are constructed as pre-stressed concrete supporting pipes produced by molding concrete by centrifugal action and have flat upper supporting shoulders for supporting the trackway panels.

Abstract: A two-block concrete railroad tie for a fixed rail carriageway with an at least partially continuous reinforcement, which is exposed between the blocks and, after alignment, engages the sealing compound over a supporting layer, becoming anchored in it, the blocks being provided with a mounting surface, which is shortened in the longitudinal direction and from which slanting side surfaces extend upward at least at the front side.

Abstract: The invention pertains to a boot for a railway block or tie. The boot is provided with fins that extend from an internal wall of the boot. The fins serve to space the internal wall from the railway block or tie during pouring and curing of concrete or grout around the boot.

Abstract: The invention relates to a rail system (1) comprising a line of rails with fixations, cross ties (wood, concrete, etc.), an infrastructure (2) on which the cross ties are laid, as well as an elastomeric cross tie shoe, whose sidewall (7), which tapers upward, entirely or partially surrounds the cross tie, the inner sidewall being in the form of a flexible lip (9) sealingly laid against said cross tie (2); besides, between the bottom of the cross tie shoe (13) and the cross tie underside (2) is inserted an elastic intermediate layer (5). The rail system according to the invention (1) is characterized in that the sidewall (7) of the cross tie shoe (4) presents on its inner face (8) a pattern of ribs and grooves and that the elastic intermediate layer (5) is provided with extruded-like channels (6, 6′, 6″) located virtually in the same plane as that in which two geometries of alternating channels appear.

Abstract: A support device has a boot 2 made of elastic material, having a bottom 3 and a peripheral sidewall 4 attached to the bottom and extending upwardly therefrom. The boot is configured to envelop a crosstie 1 from the base thereof up to a predetermined height on the side faces of the crosstie. The boot includes a first region 13 and a second region 14 for contact with the crosstie, the first region being formed at the free margin of the sidewall, and the second region being formed by a peripheral bead 11 located around the crosstie and exhibiting a predetermined dynamic stiffness. The inner surface 16 of the sidewall is slanted towards the inside of the boot with respect to the side faces of the crosstie starting from a zone located at the height of the bead so as to form a space 17 between the slanted inner surface and the side faces of the crosstie.

Abstract: A railroad rail support system is provided which utilizes tire carcasses filled with annular concrete cores. Railroad rails are attached to the concrete tire carcasses by means of load distribution plates anchored to the concrete cores and hold-down clips which are attached to the load distribution plates and retain the rail flanges against lateral and excessive vertical displacement with respect to the load distribution plates. Gage bars may extend between opposed pairs of ties and be anchored in the concrete cores to retain proper gage spacing of the rails.

Abstract: Rail support device for unballasted railway track comprising at least one concrete block resting on a flexible base, the assembly being held in an elastomeric shell which is anchored in a bed or mortar covering the lower part of said block, and which has a beading around its top edge. The horizontal cross section of said block is variable and has a maximum area at the level immediately below the beading on the upper edge of the shell so as to limit the relative movement of the block and the shell by means of an elastic force.

Abstract: A structure for fixing a rail to a tie includes a short stud 24 which is embedded in the concrete 2 of a tie above the longitudinally extending metal strut 4 of the tie and on the axis thereof. Welded to this stud, and even half embedded therein, are upper portions of two arch elements 26 whose branch are divergent on each side of the strut and are bent at their ends in the vicinity of the horizontal central axis of the strut so as to constitute hooks 34.

Abstract: The construction of steel-concrete railroad ties onto which rails are fixed is disclosed. The ties are composed of a metal saddle for fastening to the rail, comprising a tie-plate extending over a part of the upper surface of the tie and forming the zone for attachment and support of the rail. The tie-plate further extends into the tie through ribs sealed in the concrete of the tie and constitutes at least part of its reinforcement.

Abstract: The invention relates to the technique of prestressed concrete and concerns a reinforcing device comprising a cylindrical metal tube at the ends of which are friction welded two plates or flanges defining radial support surfaces for bearing on the concrete. One of these plates constitutes an end wall against which abuts a metal core for putting the tube under tension. The other plate, which has a centre aperture, comprises means such as screw threading which co-operates with a bolt for achieving said tensioning in an effective and easy manner. Preferably, the tube has a section which varies along its longitudinal axis so as to afford an improved guide for the core and improve the characteristics of the reinforcement. A particularly advantageous application is in the manufacture of composite railway ties.