AU2007211764B2

AU2007211764B2 - Ballastless track for railway vehicles

Info

Publication number: AU2007211764B2
Application number: AU2007211764A
Authority: AU
Inventors: Hans Bachmann; Jens Kleeberg
Original assignee: Rail One GmbH; Koninklijke BAM Groep NV
Current assignee: Rail One GmbH; Koninklijke BAM Groep NV
Priority date: 2006-02-03
Filing date: 2007-01-20
Publication date: 2011-03-03
Anticipated expiration: 2027-01-20
Also published as: AU2007211764A8; TW200801285A; AU2007211764A1; WO2007087781A1; DE102006005376A1; EP1979541A1

Description

Fixed carriageway for rail vehicles The invention relates to a fixed carriageway for rail vehicles which has an inclined surface in the region of a bend. Fixed carriageways are usually used in rail sections intended for high- and very high-speed vehicles. Instead of a conventional ballast bed, in fixed carriageways a carriageway panel is provided in which sleepers can be embedded. In the case of earthworks, the carriageway panel lies on a hydraulically bonded support layer, optionally also on a frost-protection layer, in which case the carriageway panel, the hydraulically bonded support layer and the frost-protection layer are manufactured in separate operations. In the case of fixed carriageways, the engineering works are frequently planned and carried out in advance, independently of the type of superstructure subsequently carried out. In such cases, it happens that the surfaces of the engineering works are not adapted to the fixed carriageway. In particular, usually there is no adaptation to the necessary raising in the region of a bend in the fixed carriageway, so that the fixed carriageway then has to be carried out on a plane structure. Fig. 1 shows such a conventional construction of a fixed carriageway 1. the fixed carriageway 1 essentially consists of a carriageway panel 2, into which sleepers 3 are embedded parallel to the surface of the carriageway panel 2. The sleepers 3 are formed as dual-block sleepers with a grid support reinforcement 4. The carriageway panel 2 is located on a bridge and rests on a profiled concrete panel 5, which is concreted on to an optional protective concrete panel 6. The bridge is in this case only indicated as an example of a structure with a horizontal surface. In the case of a bend, the profiled concrete panel 5 has a raised portion and accordingly has a trapezoid cross-section. In the case of such a conventional fixed carriageway, the protective concrete 2 panel 6, the profiled concrete panel 5 and the carriageway panel 2 are produced in separate operations, which is complicated and hence expensive. The object of the invention is therefore to indicate a fixed carriageway for rail vehicles which is more simply constructed and hence more economical. To achieve this, in a fixed carriageway of the type mentioned in the introduction, it is provided that this has a carriageway panel with a trapezoid cross-section. Unlike in conventional fixed carriageways, according to the invention, a separate profiled concrete panel and a separate carriageway panel applied thereto are dispensed with, and instead only the carriageway panel of trapezoid cross-section is produced in a single operation, so that unlike conventional construction methods, there is no concrete join between the carriageway panel and a profiled concrete layer. The raised section necessary for bends is achieved by the trapezoid carriageway panel. This carriageway panel has a variable cross-section, which is adapted to the respectively required raised portion. The fixed carriageway according to the invention may have a grid-like reinforcement with longitudinal and/or transverse rods. This longitudinal and transverse reinforcement optionally together with sleepers, preferably dual block sleepers, forms a track grid, which is aligned before being cast in concrete and is then cast in the concrete. In a further embodiment of the invention, it may be provided that plural, vertically spaced longitudinal and/or transverse rods are provided. In the case of large raised sections, accordingly the static requirements of plural layers of longitudinal and/or transverse rods can be used. In addition, the reinforcement of the carriageway panel of the fixed carriageway according to the invention may have vertically disposed reinforcement sections, whose length is adapted to the respective height of the carriageway panel. In 3 particular, the reinforcement may have plural vertical rods distributed in the transverse direction. Sleepers can be embedded in the carriageway panel of the fixed carriageway according to the invention. In order to ensure particularly good force transmission, it can be provided that the reinforcement of the carriageway panel is connected to a reinforcement of the sleepers, preferably at the raised side of the carriageway panel. The reinforcement of the sleepers can for example be formed as a grid support, which after adjustment of the track grid is connected e.g. by wire to the reinforcement of the carriageway panel. Preferably, the sleepers having the grid reinforcement are formed as single-block, dual-block or multi-block sleepers. The carriageway panel with a trapezoid cross-section can be constructed on different types of substructure such as earthworks, bridges, tunnels or tunnel cuttings. In addition, the trapezoid carriageway panel can be constructed under a points carriageway. Further advantages and details of the invention are explained by means of examples with reference to the Figures, which are schematic diagrams showing: Fig. 1 a cross-section of a fixed carriageway according to the prior art; Fig. 2 a first embodiment of a fixed carriageway according to the invention; and Fig. 3 a second embodiment of a fixed carriageway according to the invention. Fig. 2 shows a fixed carriageway 7, which is located in the region of a curved section of the track. The fixed carriageway 7 comprises a carriageway panel 8 in which a dual-block sleeper 9 is embedded. The dual-block sleeper 9 consists of blocks 10, 11 which are connected together via a grid support 12. The grid support 12 and the dual-block sleepers 9 are disposed parallel to the surface 13 of the carriageway panel 8.

4 The carriageway panel 8 has a plane underside 14, which is disposed in the embodiment shown on a protective concrete panel 15, but in principle on any surface of an engineered structure. The carriageway panel 8 with the horizontal underside 14 and the inclined upper face 13 has a trapezoid cross-section. In the carriageway panel 8 is a grid consisting of longitudinal rods 16 and transverse rods 17 connected thereto. Adjoining the transverse rods 17 on the raised side of the carriageway panel 8 is a bent, vertical reinforcing section 18, which passes into a reinforcement section 19 extending approximately parallel to the surface 13 and which is connected to the grid support 12. The carriageway panel 8 is cast in concrete in a single operation after alignment of the track grid. Fig. 3 shows a second embodiment of a fixed carriageway according to the invention, in which the same reference numbers are used for corresponding parts as in Fig. 2. The fixed carriageway 20 shown in cross-section in Fig. 3 has in principle the same structure as the fixed carriageway of Fig. 2. Due to the more pronounced raising, additional transverse rods 21 are provided as a component of the reinforcement, which are located under the grid support 12 and above lower transverse rods 22. The transverse rods 21, 22 are disposed parallel to one another and to the underside 14. In addition to the external vertical reinforcing section 18, further vertical, rod-like reinforcing sections 23 are disposed inside the carriageway panel, whose length is adapted to the respective height of the carriageway panel. In the case of a bend in a fixed carriageway, the raised section changes only gradually, and accordingly the cross-sections shown in Figures 2 and 3 are not to be taken as a limitation, but as typical cross-sections which join together continuously. In the starting and end region of a curved section, additional 5 transverse rods 17, 21 and 22 can be dispensed with, and instead only the surface of the carriageway panel is slightly inclined.

Claims

1. Fixed carriageway for rail vehicles, which has an inclined surface in the region of a bend, with a carriageway panel (8) with a trapezoid cross-section and 5 sleepers embedded in the carriageway panel (8), characterised in that the carriageway panel (8) has a grid-like reinforcement with longitudinal and/or transverse rods (16, 17, 21, 22), whereby the reinforcement of the carriageway panel (8) is connected to a reinforcement of the sleepers. 10

2. Fixed carriageway according to claim 1, characterised in that plural spaced longitudinal and/or transverse rods (16, 17, 21, 22) are provided.

3. Fixed carriageway according to claim 1 or 2, characterised in that the reinforcement of the carriageway panel (8) has vertically disposed reinforcement 15 sections (18, 23) whose length is adapted to the respective height of the carriageway panel (8).

4. Fixed carriageway according to claim 3, characterised in that the reinforcement has plural vertical reinforcement sections (18, 23) distributed in the 20 transverse direction.

5. Fixed carriageway according to claim 1, characterised in that the reinforcement of the carriageway panel (8) is connected to a reinforcement of the sleepers on the raised side of the carriageway panel (8). 25

6. Fixed carriageway according to claim 1, characterised in that the reinforcement of the sleepers is formed as a grid support (12).

7. Fixed carriageway according to claim 6, characterised in that the sleepers are 30 formed with grid support reinforcement as single-block, dual-block or multi-block sleepers. 7 AMENDED

8. Fixed carriageway according to any one of the preceding claims, characterised in that the carriageway panel (8) can be constructed with a trapezoid cross-section on different types of substructure such as earthworks, bridges, tunnels or tunnel cuttings. 5

9. Fixed carriageway according to any one of the preceding claims, characterised in that the carriageway panel (8) can be constructed with a trapezoid cross-section under a points carriageway.