EP2297401B1 - Solid trackway having continuous bedding - Google Patents

Description

The present invention relates to a slab track for rail-guided vehicles with a substantially continuous support of rails on a concrete slab. The rail is supported by its foot on an elastic intermediate layer. Furthermore, the slab track includes a lateral guide piece of the rail, wherein the rail is supported and guided by the guide piece in the horizontal direction.

A slab track with a continuous support of rails is out of the WO 03/016629 A1 known. Here, an elastic pad is provided below the rail foot, on which the rail is mounted continuously. The rail fastening takes place here continuously by pouring the trough with a solidifying mass. To be able to produce such a solid roadway quickly, chamber fillets are arranged laterally next to the rail webs, which are fixed in corresponding recesses of the troughs. For temporary positionally correct fixation of the rail and the Kammerfüllsteine in the trough an adjusting device is provided. For attachment of the rail, a space between the Kammerfüllsteinen and the trough walls is then filled with a grout.

The DE 195 19 745 C2 also describes a ballastless track superstructure with a continuous elastic bearing of the rails. The rail mounting is also carried out continuously by the rail is braced by guide beams in the receiving troughs. Between rail and guide bar elastic moldings are arranged. The joints between guide beam and trough walls are filled with an elastic potting compound, so that the rails in horizontal Direction are stored continuously elastic. The rails are almost completely embedded.

The DE-A-1 658 541 shows a slab track with a substantially continuous support of rails in a trough-like recess. The rail is guided in the horizontal direction in the region of the fasteners on both sides by a conventional angled guide plate, for which grooves are to be introduced at the bottom of the trough-like recess. The rail is fastened to the concrete slab at the fastening points by means of tension clamps, which also fix the angled guide plates. The remaining space to the side of the rails and above the fortifications within the trough is filled by fillers, which are then cast in the usual way, so that this rail is completely embedded.

Object of the present invention is to propose a slab track for rail vehicles, which has high ride comfort and favorable wear behavior and is economical to manufacture.

The object is achieved with the features of claim 1.

A slab track for rail-guided vehicles comprises a substantially continuous support of rails on a concrete slab. The rail has a rail head, a web and a rail foot and is supported by its foot on an elastic intermediate layer. Furthermore, the slab track comprises on both sides arranged lateral guide pieces of the rail, wherein the rail is supported and guided by the guide pieces in the horizontal direction. The rail is arranged in a trough-like recess of the concrete slab. For this purpose, bumps, which each extend between two predetermined breaking points of the plate, can be arranged on the concrete slab, so that a substantially continuous bearing of the rails is achieved. The rail is at discrete Attachment points attached by means of a fastener on the concrete slab. Between the rail and the concrete slab only the elastic intermediate layer is arranged. The rail is thus superimposed without the interposition of a load-distributing plate only on the elastic intermediate layer on the concrete slab. The attachment of the rails only at discrete attachment points allows economical production and attachment of the rail. The guide pieces are arranged on the lateral trough wall of the trough-like recess. The guide piece can be securely supported on the lateral trough walls and thereby precisely position and guide the rail. There are provided guide pieces of different thickness to influence the position of the rail. As a result, a page correction of the rail 2 can be made by up to 8 mm.

A temporary fixation of the rail is not necessary because the rail can be adjusted in the horizontal direction by the guide pieces position. Due to the continuous support of the rail, undesired tilting by horizontally acting forces is prevented despite the discrete fastening and lateral guidance. The solid slab of the invention thus allows the advantages of continuous rail support, in particular with regard to noise emissions and wear, to be combined with simple production.

Preferably, the guide piece only supports the rail at its rail foot. A corresponding guide piece can be arranged in a simple manner in the region of the rail fastening.

Furthermore, it is advantageous if the concrete slab has a groove in which the fastening means is supported in the operating position. The fastening means can thus be supported directly on the concrete slab. Intermediate plates made of steel or plastic as in the usual in the art fortifications in individual bases are not required.

The structure of the slab track according to the invention is thus simplified.

It when the concrete slab has a further groove in which the fastening means is supported in the mounting position is particularly advantageous. The fastening means, which is preferably designed as a tension clamp, can thus be mounted already during prefabrication. Here, it is first fixed in the mounting position to allow on site the insertion of the rail.

A development of the invention provides that the lateral guide piece supports the rail at its foot in the horizontal direction discontinuously. The guide pieces can thereby be arranged in a simple manner in the region of the rail fastenings and fastened with the rail fastening.

According to another embodiment of the invention, the lateral guide piece supports the rail in the horizontal direction substantially continuously. It is particularly advantageous if the length of the guide piece substantially corresponds to the distance of predetermined breaking points of the plate. In this way, a largely continuous horizontal support can be achieved, which is interrupted only in the region of the predetermined breaking points. The attachment can also be done in a simple manner in the field of rail fasteners. When breaking a rail can be counteracted by the continuous lateral support evasion of the rail low.

Furthermore, it is advantageous if on both sides of the rail depending on a guide piece is arranged, wherein the rail is guided between the two guide pieces in the vertical direction. During the passage of a train, a movement of the rail in the vertical direction can be made possible without thereby changing the track position.

Advantageously, the guide piece is made of a plastic, in particular of glass fiber reinforced plastic. However, it is also possible to produce the guide piece made of concrete. Due to the rigidity of these materials, a reliable horizontal support and guidance of the rails can be achieved.

According to one embodiment of the invention, the guide piece is fixed by the fastening means in the longitudinal direction of the rail. Special measures for fixing the guide pieces are not required, so that the installation of the slab track is particularly easy. Preferably, the guide pieces have a recess in the region of the rail fastening, in which the fastening means or the tensioning clamp engages positively in the longitudinal direction.

According to another embodiment, the guide piece is cast in the concrete of the plate. The guide piece is thereby securely fixed in the slab track, with no complex assembly work is required. The guide piece may in this case have projections, an undercut or recesses in order to connect with the pouring in a favorable manner with the concrete of the plate or to dig.

Another advantageous development of the invention provides that the elastic intermediate layer and / or the guide piece is positively connected to the concrete slab. Thus, the guide piece or the elastic intermediate layer may have projections or undercuts to allow the positive connection. These can in turn interact with projections, edges or undercuts of the concrete slab or a hump arranged on this.

If the guide piece is essentially U-shaped, it can, for example, engage around the hump of the concrete slab in a form-fitting manner and thereby be fixed.

According to another embodiment of the invention, it is advantageous if the elastic intermediate layer and / or the guide piece engages in predetermined breaking points of the plate. This also allows a positive connection of the guide piece can be achieved with the concrete slab.

In addition, it is advantageous if the elastic intermediate layer and / or the guide piece is a molded part. This may for example be a casting or a glass fiber reinforced plastic part, which is made in a mold. A production of the leader in larger numbers is thus possible in a favorable manner.

According to an advantageous embodiment of the invention, the elastic intermediate layer comprises an adjustment plate for height adjustment of the rail. As a result, a height adjustment of the rail can be done in a simple manner on site.

The plate is advantageously made of precast concrete slabs or cast in situ concrete concrete sleepers.

Figur 1

eine schematische Darstellung einer erfindungsgemäßen Festen Fahrbahn mit einer Betonplatte und einer im Wesentlichen kontinuierlichen Auflagerung von Schienen auf der Betonplatte,

Figur 2

eine Darstellung einer erfindungsgemäßen Festen Fahrbahn in einer perspektivischen Darstellung,

Figur 3

eine alternative Ausführung einer erfindungsgemäßen Festen Fahrbahn in einer perspektivischen Darstellung,

Figur 4

eine schematische Darstellung einer Festen Fahrbahn sowie eines Führungsstückes, welches formschlüssig mit der Betonplatte verbunden ist,

Figur 5

eine schematische Darstellung einer Festen Fahrbahn sowie einer elastischen Zwischenlage für eine Feste Fahrbahn, wobei die elastische Zwischenlage formschlüssig mit der Betonplatte verbunden ist,

Figur 6

eine weitere Ausführung einer elastischen Zwischenlage bzw. eines Führungsstückes, welches formschlüssig mit der Betonplatte verbindbar ist und

Figur 7

eine Prinzipdarstellung eines erfindungsgemäßen Führungsstückes, welches in eine Sollbruchstelle der Platte eingreift.

Further advantages of the invention will be described with reference to the embodiments illustrated below. Show it:

FIG. 1

a schematic representation of a slab track according to the invention with a concrete slab and a substantially continuous support of rails on the concrete slab,

FIG. 2

a representation of a slab track according to the invention in a perspective view,

FIG. 3

an alternative embodiment of a slab track according to the invention in a perspective view,

FIG. 4

a schematic representation of a slab track and a guide piece which is positively connected to the concrete slab,

FIG. 5

a schematic representation of a slab track and an elastic intermediate layer for a slab track, wherein the elastic intermediate layer is positively connected to the concrete slab,

FIG. 6

Another embodiment of an elastic intermediate layer or a guide piece, which is positively connected to the concrete slab and

FIG. 7

a schematic diagram of a guide piece according to the invention, which engages in a predetermined breaking point of the plate.

FIG. 1 shows a slab track 1 for rail-guided vehicles, in which the rails 2 are substantially continuously supported on a concrete slab 3. For Auflagerung and for fixing the rails 2, the concrete slab 3 bumps 4 or similar surveys, in which the rail 2 is arranged. In the concrete slab 3 and the humps 4 a trogartige recess 5 is incorporated for this purpose. The bumps 4 or trough-like recesses 5 preferably extend over the entire concrete slab 3, so that a substantially continuous bearing of the rails 2 results, but are interrupted in the region of predetermined breaking points 6 of the plate 3.

In the present case, only a section of a concrete slab 3 is shown. To build such a solid roadway site, the concrete slabs 3 are prefabricated, placed on the site on the ground and firmly connected with each other. The concrete slabs 3 with the rails 2 can in this case with high precision can be prefabricated, so that on site no adjustments to the tracks are required. The rails 2 are in this case in the trough-like recesses 5 with the interposition of an elastic intermediate layer 7 (see FIG. 2 ) to ensure the necessary elasticity. For lateral alignment and guidance of the rail 2 in this case guide pieces 8 are provided, which support the rails 2 in the horizontal direction.

It is now envisaged that the rail 2 is fastened to discrete attachment points 9 by means of a fastening means 12, preferably a tension clamp, on the concrete slab 3. An elaborate pouring the trough-like recess 5 for the continuous attachment of the rails 2 is thus not required. Nevertheless, impermissible deflections of the rail head can be avoided by the continuous bearing of the rails 2. A load distribution plate as usual in the prior art for individual fasteners is not required here, so that the structure of the rail is simplified.

As continues in FIG. 2 it can be seen, the rail 2 is supported by the guide piece 8 only at its foot 10, so that a rail fastening 9 by means of a fastening means 12 is possible. In the present case, the guide piece 8 in the region of the attachment points 9 a recess 11, so that the rail fastening can be done in a known manner by means of clamps. A supporting surface 13 of the guide piece 8 is nevertheless formed over the entire length of the guide piece 8, since the support takes place only in the region of the rail foot 10.

The lateral guide piece 8 is according to the illustration of FIG. 2 designed such that it supports the rail 2 in the horizontal direction largely continuously. The guide piece 8 is in this case formed substantially so long that it corresponds to the distance of two predetermined breaking points 6 of the plate 3 and approximately the width of the bumps 4. By such trained Guide pieces 8, despite the distance of the discrete attachment points 9 a largely continuous lateral guidance of the rails 2 can be achieved. Here, a guide piece 8 is arranged on both sides of the rail 2, so that the rail 2 is guided in the vertical direction between the two guide pieces 8. When driving over the rails 2, a vertical movement of the rail 2 can thus be made possible without thereby changing the position of the rail 2.

The trough-like recess 5 is formed in the example shown in the form of a substantially rectangular groove, wherein the guide piece 8 is arranged on the lateral trough wall 14 of the trough-like recess 5. The guide piece 8 can in this case be supported against the lateral trough wall 14. The rail 2 is arranged in the illustration shown on an elastic intermediate layer 7 between two guide pieces 8 in the trough-like recess 5. The rail 2 can thereby be positioned very accurately in the trough-like recess 5 and guided during operation.

In order to produce the concrete slab 3 as accurately as possible with the track profile, the trough-like recess 5 may be ground, so that it can be produced with very tight tolerances. The groove or the trough-like recess 5 can in this case be incorporated in accordance with the route course already in the precast factory dimensionally accurate. Likewise, it is also possible to grind the groove after assembly of the plates 3 on site to an accurate level. However, the inventive design of the guide pieces 8 also allows to make an adjustment of the position of the rail 2 by means of the guide pieces 8. For this purpose, the guide pieces 8 are made with different thickness to influence the position of the rail 2. As a result, a page correction of the rail 2 can be made by up to 8 mm.

The guide pieces 8 can be made as molded parts, as this allows a cheap mass production of the guide pieces 8. A special favorable embodiment of the guide pieces 8 provides that the guide pieces 8 are made of a glass fiber reinforced plastic. As a result, the guide pieces 8 can be made sufficiently rigid to firmly support the rail in the horizontal direction. However, it is also possible to produce the lateral guide pieces 8 made of a special concrete. Even with this a stiff support of the rail 2 in the horizontal direction is possible. However, an embodiment of the guide pieces 8 of a graphite material is also conceivable.

Another embodiment of a slab track 1 with a guide piece 8 is shown in FIG FIG. 3 shown in a perspective view. The bumps 4 of the concrete slab 2 are present somewhat narrower than in FIG. 1 executed, which allows improved drainage of the rails 2 on the predetermined breaking points 6. At its rail foot is the rail 2 as well as in FIG. 2 largely continuously supported, so that no load distribution plate is required here. The rail foot is superimposed directly on the elastic intermediate layer 7. In the example shown here, the elastic intermediate layer further comprises an adjusting plate 17, which allows height compensation of the rails 2. In the horizontal direction, however, the rail 2 is supported discontinuously by the guide pieces 8. For this purpose, the guide pieces 8 have a supporting surface 13 in the region of the rail fastening 9. As in the example of FIG. 2 in this case two support surfaces 13 and two guide pieces 8 are provided, which support the rail 2 in the horizontal direction and allow a vertical movement of the rail 2.

As continues in FIG. 2 can be seen, the concrete slab 3 and the hump 4 has a groove 15 in which the fastening means 12 is supported in the operating position. The construction of the slab track is further simplified by the direct support of the fastener on the concrete slab, since no additional steel or plastic plates are required. In the present illustration, the concrete slab 3 has a further groove in which the fastening means 12 is supported in mounting position. The slab track can thus be pre-assembled with the fasteners 12 in the precast plant. The installation of the rails 2 on site can still be done without hindrance. Subsequently, the clamps must be moved to fasten the rails 2 only in the operating position and fixed. The clamps shown have a slot for this purpose.

In order to achieve a secure attachment of the guide piece 8 on the concrete slab 3, it is advantageous if the guide piece 8 is positively connected to the concrete slab 3. The guide piece 8 can this, as in FIG. 4 shown to be substantially U-shaped, so that it surrounds the bump 4 of the plate 3 and thereby secured in the longitudinal direction of the rails 2.

Likewise, however, the guide piece 8 may also be designed such that it engages in predetermined breaking points 6 of the flap 3 and thereby is positively connected thereto ( Fig. 7 ).

It is also advantageous if the elastic intermediate layer 7 is positively connected to the concrete slab 3. This can be just like the one in FIG. 7 Guide piece 8 shown to be U-shaped and engage with the legs of the "U" in the predetermined breaking point of the plate 6.

A likewise favorable connection of the guide piece 8 and / or the elastic intermediate layer 7 with the plate 3 results when these are poured into the concrete of the plate 3. This also allows the guide piece 8 and the intermediate layer 7 are securely connected to the plate 3. Such embodiments of a guide piece 8 and an elastic intermediate layer 7 are schematically in the FIGS. 5 and 6 shown. For example, the parts mentioned can have projections 16, by means of which they can be positively connected to the concrete slab 3. The projections 16 can then be poured into the concrete of the plate 3. The projections 16 may be arranged in each case at the ends of the guide piece 8 or on the intermediate layer 7 in the region of the predetermined breaking points 6 or also centrally, as in FIG FIG. 6 shown. Of course, both the guide piece 8 as well as the intermediate layer 7, a plurality of recesses and / or projections 16 which can be poured into the concrete of the plate 3. However, instead of pouring it is also possible that the concrete slab 3 or the bump 4 also has corresponding recesses or projections which cooperate with recesses or projections 16 of said parts.

The invention is not limited to the illustrated embodiments, modifications and combinations within the scope of the claims are also covered by the invention.

Claims (14)

1. Solid trackway (1) particularly made of prefabricated concrete slabs or of concrete ties cast in-situ in concrete for rail-guided vehicles with a mostly continuous bedding of the rails (2) with a rail head, a stem, and a rail foot (10) on a concrete slab (3), in which case the rail (2) is supported on an intermediate layer (7) with its foot (10) and is arranged in a trough-like recess (5) of the concrete slab (3) and with lateral guiding pieces (8) arranged on both sides of the rail, which support and guide the rail in horizontal direction, wherein the rail (2) is mounted to the concrete slab (3) on discrete attachment points (9) with a mounting means (12), characterized in that only an elastic intermediate layer (7) is arranged between the rail (2) and the concrete slab (3) and that the guiding pieces (8) are securely supported on the lateral trough wall (14) of the trough-like recess (5) and thereby precisely position the rail (2) and guide it during operation, wherein guiding pieces (8) of different strengths are provided for the lateral correction of the rail (2).
2. Solid trackway according to the previous claim characterized in that the guiding pieces (8) support the rail (2) only on its rail foot (10), wherein preferably the rail (2) is guided movably in vertical direction between both guiding pieces (8).
3. Solid trackway according to one of the previous claims characterized in that the concrete slab (3) has a groove (15) in which the mounting means (12) is supported in operating position and/or has another groove (15') in which the mounting means (12) is supported in mounting position.
4. Solid trackway according to one of the previous claims characterized in that the lateral guiding piece (8) supports the rail (2) discontinuously or largely continuously in horizontal direction.
5. Solid trackway according to one of the previous claims characterized in that the length of the guiding piece (8) is largely equivalent to the distance between the predetermined breaking points (6) of the slab (3).
6. Solid trackway according to one of the previous claims characterized in that the guiding piece (8) is made of plastic, especially of glass fiber reinforced plastic, or is made of concrete.
7. Solid trackway according to one of the previous claims characterized in that the guiding piece (8) is fixed in place by the mounting means (12) in the longitudinal direction of the rail (2).
8. Solid trackway according to the previous claim characterized in that the guiding piece (8) has a recess (11) in the area of the tension clamp (12).
9. Solid trackway according to one of the previous claims characterized in that the guiding piece (8) is cast in the concrete of the slab (3).
10. Solid trackway according to one of the previous claims characterized in that the elastic intermediate layer (7) and/or the guiding piece (8) is/are attached to the concrete slab (3) in a positive fit.
11. Solid trackway according to one of the previous claims characterized in that the guiding piece (8) is largely U-shaped.
12. Solid trackway according to one of the previous claims characterized in that the concrete slab (3) has predetermined breaking points (6) in which the elastic intermediate layer (7) and/or the guiding piece (8) engage(s).
13. Solid trackway according to one of the previous claims characterized in that the elastic intermediate layer (7) and/or the guiding piece (8) is/are molded part(s).
14. Solid trackway according to one of the previous claims characterized in that the elastic intermediate layer (7) includes an adjusting slab for adjusting the height of the rail.

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