CN102016176A - Fixed carriageway with continuous support - Google Patents

Abstract

The invention relates to a fixed track (1) for rail vehicles, comprising a substantially continuous rail (2) bearing on a concrete slab (3), said rail (2) being supported by its foot on an elastic intermediate layer (7). The fixed track (1) also comprises lateral guide blocks (8) which support the rails (2) in the horizontal direction and guide the rails (2). The rails (2) are fastened to the concrete slab (3) at discrete fastening points (9) by fastening means (12). Only an elastic intermediate layer (7) is arranged between the rails (2) and the concrete slab (3).

Description

Fixed carriageway with continuous support

technical field

The present invention relates to a fixed trackway for rail vehicles having a substantially continuous rail support on a concrete slab. The rail is supported by its rail base on an elastic intermediate layer. In addition, the fixed carriageway also includes side guide shoes for the rails, wherein the guide shoes support the rails in the horizontal direction and guide the rails.

Background technique

A fixed track with continuous rail support is known from WO 03/016629 A1. Here, an elastic foundation is designed below the rail bottom, on which the rails are continuously supported. Here, the fixing of the rail takes place continuously by pouring a self-setting substance into the groove. In order to be able to produce such a fixed track quickly, cavity-filling stones are arranged on the web side, which are fastened in the corresponding spaces between the grooves. In order to temporarily fix the exact position of the rails and chamber filling stones in the trench, a calibration device is provided. To fix the rails, the cavity is subsequently filled with pouring material to fill the gaps between the stones and the walls of the trench.

DE 195 19 745 C2 likewise describes a gravel-free track superstructure with continuous elastic rail support. The rail is clamped in the receiving groove by means of the guide beam, and the fixing of the rail is likewise carried out continuously. Elastic shaped bodies are arranged between the rail base and the guide beam. The joints between the guide beams and the trench walls are filled with elastic casting material, so that the rail is continuously and elastically supported also in the horizontal direction. The rails are almost completely buried.

Contents of the invention

The object of the present invention is to provide a fixed track for rail vehicles which has a high degree of driving comfort and good wear characteristics and which can be produced economically.

This object is achieved by the features of claim 1 .

A fixed roadway for rail vehicles includes a generally continuous rail support on a concrete slab. The rail is supported by its foot on the elastic intermediate layer. In addition, the fixed carriageway includes side guide blocks of the rails, wherein the guide blocks support the rails in the horizontal direction and play a guiding role for the rails. According to the invention, the rails are fixed to the concrete slab by means of fixing devices at discrete fixing points. Only an elastic intermediate layer is provided between the rails and the concrete slab. Thus, the rails do not require intervening load distribution plates but are only supported on the concrete slab via the intermediate layer. Fixing the rail only at discrete fixing points enables economical manufacture and fixing of the rail. Temporary fixing of the rail is not necessary, because the rail can be adjusted horizontally by means of the guide block to meet the position requirements. The continuous support of the rails prevents undesired tilting due to forces exerted in the horizontal direction despite the decentralized fixing and lateral guidance. With the fixed track according to the invention, therefore, it is possible to combine the advantages of a continuous rail bearing, in particular with regard to sound emission and wear, with simple production.

Preferably, the rail has a rail head, a rail web and a rail foot. The guide blocks support the rail only at the bottom of the rail. Corresponding guide shoes can easily be provided in the area of the rail fastening.

It is also advantageous if the concrete slab has a recess in which the fastening device is supported in the operating position. Therefore, the fixture can be directly supported on the concrete slab. Intermediate plates made of steel or plastic, as in the conventional fastening at the individual support points in the prior art, are no longer necessary. This simplifies the construction of the fixed roadway according to the invention.

It is particularly advantageous if the concrete slab has a further recess in which the fastening device is supported in the installed position. Thus, the fastening device, preferably as a tension clip, can already be assembled during pre-assembly. In order to be able to introduce the rails at the construction site, the fastening device is first fastened at the installation location.

Preferably, the rail is arranged in a channel-shaped recess in the concrete slab. For this purpose, projections can be provided on the concrete slab, which each extend between two breaking points of the concrete slab, so that an essentially continuous rail support is achieved.

A refinement of the invention provides that the side guide shoes support the rail discontinuously in the horizontal direction on the rail foot of the rail. The guide shoe can thus be easily arranged in the rail fastening region and fixed by the rail fastening.

According to a further development of the invention, the side guide shoes support the rail substantially continuously in the horizontal direction. It is particularly advantageous here if the length of the guide shoe corresponds substantially to the distance between the breaking points of the concrete slab. As a result, a substantially continuous support in the horizontal direction can be achieved, which is interrupted only in the region of the breaking points. Fastening can likewise be carried out in a simple manner in the region of the rail fastening. The continuous lateral support advantageously resists deflection of the rail in the event of a rail fracture.

It is also advantageous if a guide shoe is arranged on each side of the rail, wherein the rail is guided in the vertical direction between the two guide shoes. The rails are able to move vertically as the trains pass by without thereby changing the track position.

It is advantageous if the guide block is made of plastic, in particular glass-fibre-reinforced plastic. It is also possible for the guide blocks to be made of concrete. Reliable horizontal support and guidance of the rail can be achieved by the rigidity of the material.

Furthermore, it is particularly advantageous if guide shoes are arranged on the channel side walls of the channel-shaped recess. The guide shoes can be supported securely on the side walls of the groove and thus can guide the rail precisely.

According to one embodiment of the present invention, the guide block is fixed in the length direction of the rail by a fixing device. As a result, no special measures are required for fastening the guide shoes, so that the mounting of the fixed track is particularly simple. Preferably, the guide shoe has a cutout in the region of the rail fastening, into which cutout the fastening device or tension clamp engages in the longitudinal direction by means of a positive fit.

According to a further development, the guide blocks are cast into the concrete of the slab. The guide shoe is thus securely fixed in the fixed track, and expensive installation work is no longer required here. In this case, the guide blocks can have projections, undercuts or grooves in order to be advantageously connected to each other or to be locked to each other with the concrete of the slab during pouring.

A further advantageous development of the invention provides that the elastic intermediate layer and/or the guide shoes are connected to the concrete slab by means of a form-fit connection. In order to enable a positive connection, the guide shoe or the elastic intermediate layer can also have projections or undercuts. These projections or undercuts in turn interact with the projections, edges or undercuts of the concrete slab or of the projections arranged on the concrete slab.

If the guide shoe is substantially U-shaped, the guide shoe can surround the projection of the concrete slab, for example by means of a form-fit connection, and can thus be fixed.

According to a further embodiment of the invention it is advantageous if the elastic intermediate layer and/or the guide shoe engages at the break point of the plate. A form-fit connection of the guide shoe and the concrete slab can thus also be achieved.

It is also advantageous if the elastic intermediate layer and/or the guide shoe is a shaped part. It can be, for example, a casting made in a mould, or a glass-fibre-reinforced plastic part. This advantageously makes it possible to manufacture the guide shoes in larger quantities.

According to an advantageous development of the invention, the elastic intermediate layer comprises adjusting plates for adjusting the height of the rail. The height of the rail can thus be easily adjusted on site.

Advantageously, the slabs are made of prefabricated concrete slabs or of concrete sleepers cast in cast-in-place concrete.

Description of drawings

Further advantages of the invention are described on the basis of the exemplary embodiments presented below. In the attached picture:

Figure 1 shows a schematic view of a fixed roadway with a concrete slab and a substantially continuous rail support on the concrete slab according to the invention,

Figure 2 shows a perspective view of a fixed carriageway according to the invention,

FIG. 3 shows an alternative embodiment of a fixed roadway according to the invention in a perspective view,

Figure 4 shows a schematic representation of the fixed roadway and the guide blocks connected by form fit and concrete slab,

Fig. 5 shows a schematic diagram of a fixed roadway and an elastic intermediate layer for fixing the roadway, wherein the elastic intermediate layer is connected to the concrete slab by a form fit connection,

Figure 6 shows another embodiment in which the elastic intermediate layer or the guide block can be connected to the concrete slab through a form fit connection,

FIG. 7 shows a schematic diagram of a guide shoe according to the invention engaged in a breaking point of a concrete slab.

Detailed ways

FIG. 1 shows a fixed trackway 1 for a rail vehicle, in which a steel rail 2 is supported substantially continuously on a concrete slab 3 . For supporting and fixing the rail 2 , the concrete slab 3 has lugs 4 or similar projections in which the rail 2 is arranged. To this end, groove-shaped recesses 5 are machined into the concrete slab 3 or the projections 4 . The projections 4 or groove-shaped recesses 5 preferably extend over the entire concrete slab 3 so that a substantially continuous support of the rail 2 is obtained, however the projections 4 or groove-shaped recesses 5 should break off at the concrete slab 3 . Interrupted in the area at 6.

Only a part of the concrete slab 3 is shown here. In order to construct such a fixed roadway on site, the concrete slabs 3 are prefabricated, placed on the foundation at the construction site and fixedly connected to each other. Here, the concrete slab 3 with the rails 2 can be prefabricated with high precision, so that any adjustment work on the rails is no longer necessary on site. In order to ensure the necessary elasticity, the rail 2 is laid here in the channel-shaped recess 5 with an interposed elastic intermediate layer 7 (see FIG. 2 ). In order to align and guide the rail 2 laterally, guide blocks 8 are provided here, which support the rail 2 in the horizontal direction.

According to the invention provision is made that the rails 2 are fastened to the concrete slab 3 at discrete fastening points 9 by fastening means 12 , preferably tension clips. A complex casting of the groove-like recesses 5 for the continuous fixing of the rail 2 is thus no longer necessary. Unreliable deflection of the rail head can still be avoided by the continuous support of the rail 2 . The load-distributing plates, which are customary in individual fastenings as described in the prior art, are not required here, so that the construction of the rail is simplified.

Furthermore, as can be seen in FIG. 2 , the rail is only supported at the rail foot 10 of the rail 2 by means of guide shoes, so that a rail fastening 9 via a fastening device 12 is possible. Here, the guide block 8 has a cutout 11 in the region of the fastening point 9 in order to enable the rail to be fastened in a known manner by tension clips. However, the support surface 13 of the guide shoe 8 is designed to extend over the entire length of the guide shoe 8 since the support only takes place in the region of the rail base 10 .

The side guide blocks 8 are designed as shown in FIG. 2 in such a way that they support the rail 2 largely continuously in the horizontal direction. In this case, the length of the guide shoe 8 corresponds substantially to the distance between two breakout points 6 of the concrete slab 3 or approximately to the width of the projection 4 . A largely continuous lateral guidance of the rail 2 can be achieved by means of the guide shoe 8 formed in this way despite the distance between the discrete fastening points 9 . Here, a guide shoe 8 is arranged on each side of the rail 2 , so that the rail 2 is guided in the vertical direction between the two guide shoes 8 . As a result, the rail 2 can be moved vertically when the rail 2 is being driven over, without thereby changing the position of the rail 2 .

The channel-shaped recess 5 is in the form of an essentially rectangular channel in the example shown, wherein the guide shoe 8 is arranged on the channel side walls 14 of the channel-shaped recess 5 . Here, the guide shoe 8 bears against the groove side wall 14 . In the shown figure, the steel rail 2 is arranged on the elastic intermediate layer 7 in the channel-shaped recess 5 and between two guide shoes 8 . As a result, the rail 2 can be positioned very precisely in the groove-shaped recess 5 and guided during operation.

In order to be able to produce the concrete slab 3 with the rail course as precisely as possible, the groove-shaped recess 5 can be ground so that it can be produced with very close tolerances. Depending on the course of the route, the groove or the groove-like recess 5 can already be machined to precise dimensions in the prefabrication workshop. However, it is also feasible to grind the grooves to precise dimensions after the concrete slab 3 is installed on site. However, the embodiment of the guide shoe 8 according to the invention also allows adjustment of the position of the rail 2 by means of the guide shoe 8 . For this purpose, for example, guide shoes 8 of different thicknesses can be produced in order to influence the position of the rail 2 . Through this, the side correction of the rail 2 can be performed, and the maximum correction amount is 8mm.

The guide shoe can be produced as a shaped part, since this enables advantageous series production of the guide shoe 8 . A particularly advantageous embodiment of the guide shoe 8 provides that the guide shoe is made of a glass-fibre-reinforced plastic. As a result, the guide block 8 can be produced with sufficient rigidity to support the rail fixedly in the horizontal direction. However, it is also possible for the side guide blocks 8 to be made of a special concrete. Rigid support of the rail 2 in the horizontal direction can also be achieved with this embodiment. Likewise, however, an embodiment of the guide block 8 made of graphite material is also conceivable.

FIG. 3 shows a perspective view of another embodiment of the fixed track 1 with guide shoes 8 . The lugs 4 of the concrete slab 2 are here slightly narrower than in FIG. 1 , which enables the rail 2 to better drain through the strain relief 6 . As in FIG. 2 , the rail 2 is also supported largely continuously on the rail foot of the rail 2 , so that this also does not require a load distribution plate. The rail base bears directly on the elastic intermediate layer 7 . In the example shown here, the elastic intermediate layer also comprises an adjustment plate 17 which enables a height compensation of the rail 2 . Conversely, the rail 2 is supported discontinuously by the guide blocks 8 in the horizontal direction. For this purpose, the guide block 8 has a support surface 13 in the region of the rail fastening 9 . Likewise, as in the example of FIG. 2 , two support surfaces 13 or two guide blocks 8 are provided here, which support the rail 2 in the horizontal direction and allow the rail to move vertically.

Furthermore, as can be seen in FIG. 2 , the concrete slab 3 or the projection 4 has a recess 15 in which the fastening device 12 is supported in the operating position. The direct support of the fixing device on the concrete slab further simplifies the construction of the fixed roadway, since no additional steel or plastic slabs are required. In the illustration here, the concrete slab 3 has a further recess in which the fastening device 12 is supported in the installed position. The fixed track can thus be preassembled by means of the fastening device 12 in a precast workshop. On-site installation of the rail 2 can still take place unhindered. Next the tension clamps for securing the rail 2 must be moved into the working position and secured. The tension clip shown here has an elongated hole.

In order to securely fasten the guide piece 8 to the concrete slab 3 it is advantageous if the guide piece 8 is connected to the concrete slab 3 by means of a form-fit connection. For this purpose, the guide shoe 8 can, as shown in FIG. 4 , be substantially U-shaped, so that it surrounds the cam 4 of the concrete slab 3 and is thus fixed in the longitudinal direction of the rail 2 .

Likewise, the guide shoe 8 can be designed such that it engages in the breakout point 6 of the concrete slab 3 and is thus positively connected to the concrete slab 3 ( FIG. 7 ).

It is also advantageous if the elastic intermediate layer 7 and the concrete slab 3 are form-fittingly connected. The elastic intermediate layer can be designed in a U-shape like the guide block 8 shown in FIG. 7 and engage in the breaking point 6 of the concrete slab with the legs of the "U".

An equally advantageous way of connecting the guide blocks 8 and/or the elastic intermediate layer 7 to the concrete slab 3 is that they are cast into the concrete of the concrete slab 3 . As a result, the guide blocks 8 and the intermediate layer 7 can also be reliably connected to the concrete slab 3 . This embodiment of the guide shoe 8 and the elastic intermediate layer 7 is shown diagrammatically in FIGS. 5 and 6 . The aforementioned components have, for example, projections 16 , by means of which they can be connected to the concrete slab 3 in a form-fitting manner. The projections 16 can then be poured into the concrete of the concrete slab 3 . In this case, the projections 16 can be arranged in each case on the ends of the guide blocks 8 or on the intermediate layer 7 in the area of the breaking point, or else in the middle, as shown in FIG. 6 . Of course, both the guide blocks 8 and the intermediate layer 7 can have a plurality of depressions and/or elevations 16 which can be cast into the concrete of the concrete slab 3 . Instead of pouring, it is also possible for the concrete slab 3 or the projections 4 to also have corresponding depressions or projections, which cooperate with the depressions or projections 16 of the aforementioned components.

The invention is not limited to the exemplary embodiments shown, but variations and combinations within the scope of the claims also fall within the scope of protection of the invention.

Claims (21)

1. A fixed carriageway (1) for rail vehicles having a substantially continuous rail (2) support on a concrete slab (3), wherein said rail (2) passes through its rails The bottom is supported on an elastic intermediate layer (7) and the roadway also has side guides (8) for the rails (2) that support and guide the rails in the horizontal direction , characterized in that the rail (2) is fixed on the concrete slab (3) by a fixing device (12) at a dispersed fixed point (9), and the rail (2) and the concrete slab ( 3) Only the elastic middle layer (7) is arranged between them. 2. The stationary carriageway according to the preceding claim, characterized in that the rail (2) has a rail head, a rail web and a rail base (10) and that the guide shoes (8) only rest on the rail base (10) ) to support the rail (2). 3. The fixed roadway according to any one of the preceding claims, characterized in that the concrete slab (3) has a recess (15) in which the fastening device (12) is supported in the operating position middle. 4. The fixed carriageway according to any one of the preceding claims, characterized in that the concrete slab (3) has a further recess (15') in which the fixing device (12) is supported in the installed position in another groove. 5. Fixed trackway according to claim 1, characterized in that the steel rail (2) is arranged in a channel-shaped recess (5) of the concrete slab (3). 6. Fixed trackway according to any one of the preceding claims, characterized in that the side guide shoes (8) support the rail (2) discontinuously in the horizontal direction. 7. Fixed trackway according to claim 1, characterized in that the side guide shoes (8) support the rail (2) substantially continuously in the horizontal direction. 8. According to any one of the preceding claims, the fixed roadway is characterized in that the length of the side guide blocks (8) corresponds substantially to the length between the break points (6) of the concrete slabs (3). spacing. 9. According to the fixed roadway according to any one of the preceding claims, it is characterized in that a guide block (8) is respectively provided on both sides of the rail (2), and the rail runs between the two guide blocks along the The vertical direction is oriented. 10. Fixed trackway according to claim 1, characterized in that the guide shoe (8) is made of plastic, in particular GFK. 11. Fixed trackway according to claim 1, characterized in that the guide blocks (8) are made of concrete. 12. Fixed trackway according to claim 1, characterized in that the guide shoe (8) is arranged on a channel side wall (14) of the channel-shaped recess (5). 13. Fixed carriageway according to any one of the preceding claims, characterized in that the guide shoe (8) is fixed by the fixing device (12) in the longitudinal direction of the rail (2). 14. Fixed trackway according to claim 1, characterized in that the guide shoe (8) has a cutout (11) in the region of the tension clip (12). 15. Fixed carriageway according to claim 1, characterized in that the guide blocks (8) are cast into the concrete of the concrete slab (3). 16. The fixed roadway according to any one of the preceding claims, characterized in that the elastic intermediate layer (7) and/or the guide pads (8) are connected to the concrete slab (3) by a positive fit connected. 17. Fixed trackway according to claim 1, characterized in that the guide shoe (8) is substantially U-shaped. 18. Fixed roadway according to any one of the preceding claims, characterized in that the concrete slab (3) has a breaking point (6), the elastic intermediate layer (7) and/or the guide block ( 8) Engage in these breakouts. 19. Fixed trackway according to claim 1, characterized in that the elastic intermediate layer (7) and/or the guide shoes (8) are shaped parts. 20. Fixed trackway according to one of the preceding claims, characterized in that the elastic intermediate layer (7) contains an adjusting plate for adjusting the height of the rail. 21. Fixed trackway according to claim 1, characterized in that the concrete slab (3) is made of a prefabricated concrete component slab or of concrete sleepers cast in cast-in-place concrete.

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