EP0698686A1 - Railway track on a continuous supporting slab and method for laying the railway track on a continuous supporting slab - Google Patents

Abstract

The clamp screws (24) are fastened to the sole plate via dowel connections. There is one clamp screw for each sleeper, located in the area of its longitudinal centre. The screw passes through a vertical, pref. preformed passage aperture (30) in the sleeper (16). The aperture serves as template to form a dowel bore (28) in the sole plate (14). In the area of the clamp screw, the sleeper engages on the sole plate enclosing a hollow space. A spring element, pref. helical compression spring (38) is located between clamp screw and sleeper.

Description

The invention relates to a track grate on a continuous support plate with temporary or permanent threshold attachment to the support plate by means of clamping means, in particular clamping screws.

The support plate can be a concrete slab with reinforcement, possibly with transverse joints, or an asphalt slab. The sleepers of the possibly pre-assembled track grate are supported on the continuous support plate and not, as is usual with the classic superstructure, over a ballast bed on the ground.

When the track grate is laid according to the well-known "RHEDA" system, the track grate is finally connected to the continuous support plate by pouring the threshold gaps with concrete or asphalt. Before this pouring, the track grate must be adjusted in height and on the side, which is conventionally done with the aid of appropriate screw spindles.

From DE-OS 41 13 566 it is known to place the track grating directly on the support plate produced with a corresponding height accuracy, a transverse force base projecting from the support plate being in a positive connection with the sleepers. To establish the positive connection, the track yoke must be fixed with provisional means after alignment for the required period of time. If a provisional fixation is dispensed with, the shear force base must be manufactured with a correspondingly high degree of lateral accuracy, since readjustment is practically impossible. Both solutions are associated with relatively high costs and effort.

From DE-OS 37 10 188 it is known to fix the track grating permanently to the support plate (ie without pouring out the threshold gaps) in that the sleepers are fastened to the support plate via two pairs of prestressing steel in the area of the two sleeper ends. These prestressing steels are apparently already cast in during the manufacture of the support plate. Here The diameters of the prestressing channels receiving the prestressing steels can be enlarged, so that horizontal displacement corrections over several centimeters are possible. Via a nut screwed onto the respective prestressing steel and supported on the top of the respective threshold, such a high preload with which the threshold presses against the support plate can be set that displacement of the sleepers is excluded even under high dynamic loads. The manufacturing and assembly work for these clamping devices is high.

The invention has for its object to provide a track grate on a continuous support plate with reduced effort in the provisional or permanent threshold fixation on the support plate after an adjustment, in particular side adjustment of the track grate.

This object is achieved in that the clamping means are each attached to the support plate via at least one dowel connection. It has been found that the pull-out strength of modern dowel connections is sufficient even for permanent threshold attachment. No preparatory work on the support plate is required to make the dowel connections. The support plate can be designed to be completely flat, possibly only provided with height-precisely produced support ribs for the sleepers, in order to ensure the penetration of concrete or asphalt between the underside of the sleepers and the upper side of the support plate to avoid voids in the "RHEDA" system. A side adjustment is possible without restriction by the current alignment of the track grate, since the dowel connection can be made at practically any point on the support plate by making the corresponding dowel hole after the side adjustment in the support plate. A preformed through opening for the tensioning means in the sleeper preferably serves as a drilling jig for producing the dowel hole in the support plate.

From the subsequently published European application, publication no. EP-0 621 370 A with the designation of Germany, France and Great Britain, a track grating laid on a continuous asphalt support plate is known with threshold attachment to the support plate by means of adhesive dowels embedded in the support plate.

Particularly preferably, only one clamping device is provided per threshold, which is arranged in the area of the center of the length of the threshold. The material and assembly effort for the threshold attachment to the support plate is accordingly significantly reduced. A correspondingly high pre-tensioning of this one tensioning means in the case of the permanent threshold attachment prevents an unwanted threshold shift during operation.

A particularly simple and thus inexpensive construction of the tensioning means is ensured if the tensioning means passes through an essentially vertically extending, preferably pre-shaped, passage opening of the threshold.

It is proposed that the threshold lies hollow on the support plate in the area of the clamping means. On the one hand, this enables increased pretension. On the other hand, the mounting on the support plate is facilitated, since the drilling particles or drilling dust which occur when drilling the dowel hole in the support plate do not have to be sucked out of the support plate through the passage opening of the threshold, but can escape laterally through the support cavity.

In order to obtain the desired preload without further ado, a spring element, preferably in the form of a helical compression spring between the tensioning means and the threshold, is proposed.

In order to additionally increase the resistance to displacement of the threshold in any direction parallel to the support plate, it is proposed that the tensioning means be solid at least in the transition area between the support plate and the threshold. The massive section of the clamping device thus serves as a push anchor horizontal displacement forces are derived from the threshold directly into the support plate.

For this purpose, it is preferably provided that the clamping means has a dowel head which can be fixed in the support plate, a screw head which is supported on the upper side of the sleeper and a connecting bolt which is solid at least in the transition area and connects the dowel head to the screw head. It can be provided that the connecting bolt forms the only connection between dowel head and screw head.

In order to intercept any displacement movement in the beginning, it is proposed that the cross-section of the connecting bolt essentially corresponds to the cross-section of the through opening in the threshold and the cross-section of the dowel hole in the support plate.

It is proposed that the connecting bolt is screwed to the dowel head and that the dowel head has an expansion sleeve with increasing expansion effect as the screw connection is tightened. This gives a double expansion effect if an expansion cone is provided at both ends of the expansion sleeve.

In order to obtain the desired spreading effect in a simple manner by twisting the connecting bolt, it is proposed that the screw head end of the connecting bolt be provided with a rotary drive formation, preferably in the form of a radially extending end slot.

In order to ensure that the expansion dowel is always tightened, it is proposed that at least one projection of the rotary block in the dowel hole of the support plate is provided on the outer circumference of the expansion sleeve and that a cap screw of the dowel head is at least approximately non-rotatably connected to the clamping sleeve.

In addition to the expansion anchor connection, in particular undercut impact anchor connections, there are also adhesive anchor connections for the dowel connections, especially if the threshold attachment is permanent in question. The dowel connection can generally also be referred to as a drill-anchor connection, since for its manufacture (except in the case of a weft dowel or weft anchor used in one embodiment of the invention) a drill hole is made in the finished support plate with subsequent insertion of a bolt (= anchor) in the borehole. The anchor is anchored in the borehole by means of a frictional connection (clamping or expansion anchor) and / or a positive connection (undercut anchor) and / or adhesive connection.

Especially in the case of the provisional threshold attachment, it can also be provided that the tensioning means has a mounting plate arranged between the threshold and the support plate, which is fastened to the support plate by means of at least one dowel connection and which is connected via a screw connection to a head screw supported on the top of the threshold. It is particularly preferably provided that the mounting plate protrudes laterally beyond the threshold at least on one side and is doweled in the projecting area with the support plate. The above areas are directly accessible from above for a corresponding dowel setting device, in particular a weft pin dowel setting device. Only comparatively small dowel lengths are required, depending on the thickness of the mounting plate and the depth of penetration into the support plate. The mounting plate is preferably designed as a flat iron. The shot dowels can be set extremely quickly.

The invention further relates to a method for laying a track grating on a continuous support plate manufactured with a height profile that essentially corresponds to the desired rail profile. Due to the manufacturing accuracy of the support plate, there is no need for height adjustment of the sleepers, especially when the height-adjustable fastening means already used are used to fasten the rails to the sleepers. After the side adjustment of the sleepers, the final fastening is then carried out according to the invention solely by fixing with the aid of the clamping means doweled with the support plate.

Further advantageous refinements of this method result from a corresponding application of the means described above in connection with the claimed track grate on a continuous support plate. It is particularly preferably provided that only one tensioning means is used per threshold, in the region of the center of the length of the threshold.

The invention further relates to a method for laying a track grate on a continuous support plate, which in particular is provided with at least one support rib for the sleepers running in the longitudinal direction of the support plate with a height profile corresponding to the desired rail profile, which is characterized in order to reduce the material and work involved that the track grille is placed on the support plate or the at least one support rib and, after lateral adjustment parallel to the longitudinal direction of the sleeper, is temporarily fixed to the support plate by fixing the sleepers to the support plate by means of dowels anchored to the support plate, and that the sleepers are then attached of the support plate by casting the threshold gaps. Here too, reference is made to the above description of the track grate on a continuous support plate with regard to advantageous embodiments of the method. It is also particularly preferred here that flexible elements, in particular geotextile mats or the like, are inserted between the sleepers and the support plate.

The invention is explained below using preferred exemplary embodiments with reference to the drawings.

Fig. 1

einen vereinfachten Querschnitt durch einen Gleisrost auf durchgehender Tragplatte mit bleibender Schwellenbefestigung mittels Spannmittel (Schnitt nach Linie I-I in Figur 2);

Fig. 2

einen vergrößerten Teilschnitt der Anordnung in Figur 1 (Schnitt nach Linie II-II in Figur 1);

Fig. 3

einen Schnitt entsprechend Figur 2 mit einem abgewandelten Spannmittel;

Fig. 4

einen Schnitt entsprechend Figur 1 durch einen Gleisrost mit durchgehender Tragplatte mit vorläufiger Schwellenbefestigung mittels Spannmittel;

Fig. 5

eine vergrößerte Teilansicht entsprechend Figur 4 mit abgewandeltem Spannmittel (Schnitt nach Linie V-V in Figur 6);

Fig. 6

einen vergrößerten Detailschnitt der Anordnung in Figur 5 nach Linie VI-VI.

It shows:

Fig. 1

a simplified cross section through a track grate on a continuous support plate with permanent threshold attachment by means of clamping means (section along line II in Figure 2);

Fig. 2

an enlarged partial section of the arrangement in Figure 1 (section along line II-II in Figure 1);

Fig. 3

a section corresponding to Figure 2 with a modified clamping means;

Fig. 4

a section corresponding to Figure 1 through a track grate with a continuous support plate with preliminary threshold attachment by means of clamping means;

Fig. 5

an enlarged partial view corresponding to Figure 4 with modified clamping means (section along line VV in Figure 6);

Fig. 6

an enlarged detail section of the arrangement in Figure 5 along line VI-VI.

In Figure 1, the overall structure of the railway superstructure according to the invention made of track grating or track yoke is shown in simplified form. The usual hydraulically bound base layer (HGT) 12 is first applied to an anti-freeze layer 10 on the substrate (not shown). This in turn carries a continuous support plate 14. This can be formed by a concrete plate, which may be subdivided by transverse joints in order to ensure a controlled formation of transverse cracks. The support plate can be provided with reinforcement, not shown, to increase the tensile strength. Under certain circumstances, the support plate can also be made of asphalt or similar material.

Thresholds 16 are placed on the support plate 14 as part of a track grate or track yoke. Two rails 20 are mounted on the sleepers 16 via conventional fastening means 18, which are not shown, and depending on the type of fastening means 18, height adjustment in the range of a few centimeters is also possible. The rails 20 can form a preassembled unit with the sleepers, so that a complete preassembled track grate section is placed as a whole on the support plate 14. Under certain circumstances, however, a later assembly of the rails 20 to the on the Support plate 14 already lying thresholds 16 in question. The sleepers are made of reinforced concrete, although metal sleepers may be considered.

In order to avoid local voltage peaks, a flexible layer 21 made of plastic fabric or plastic fleece (in particular geotextile mat) is inserted between the sleepers 16 and the support plate 14. In the area of its length center, the respective threshold 16 is formed with a flat recess 22 (in the area between the fastening elements 18) in order to prevent the threshold 16 from resting in the area of its length center. If the support plate 14 is not exactly flat, this could lead to an inadmissible bending of the threshold 16 under load. In addition, the hollow support allows the application of a defined prestress by means of the single clamping means 24, which will be described in more detail below, in the middle of the length of the threshold 16. The hollow support of the threshold 16 on the support plate 14 can of course also be achieved in that the support plate 14 with a corresponding recess 26 is provided, which is indicated in Figure 1 with a dotted outline. However, the hollow support serves a further purpose, namely to receive drilling particles or drilling dust during the production of a dowel hole 28 in the support plate for anchoring the clamping means 24 with the threshold 16 already attached.

The tensioning means 24 serves to introduce a vertically directed pretensioning force with which the sleeper 16 presses on the support plate 14, the longitudinal and transverse sliding resistance of the sleeper 16 on the support plate 14 and the tilting resistance when loaded in the longitudinal direction of the rail (braking or strong acceleration of a train) to keep it big accordingly. In addition, however, the tensioning means 24 also has the further function of a sheared dowel (thrust dowel) within the receiving bore 28 of the support plate 14 and a corresponding through opening 30 in the threshold 16. It therefore acts directly as a horizontal displacement of the threshold 16 relative to the support plate 14 in any direction.

For this purpose, the clamping means 24 is solid in the transition area between the threshold 16 and the support plate 14, as can be seen in FIGS. 2 and 3.

In detail, the clamping means 24 is formed by a solid connecting bolt 32, a screw head 34 screwed to it and a dowel head 36 also screwed to it. The screw head 34 has the shape of a cap screw, which is supported with its screw head 34 'via a helical compression spring 38 and a washer 40 on the upper side 42 of the threshold 16. With its threaded end section 34 ″, the screw head 34 is screwed into a corresponding internal thread at the upper end of the connecting bolt 32 in FIG. 2.

The dowel head 34 is in turn formed by a cap screw 44 and an expansion sleeve 46. The dowel head 36 is shaped in accordance with a customary undercut impact anchor, so that the undercut 28 ′ of the dowel bore 28 can be seen in FIG. 2. For this purpose, the expansion sleeve 46 'is provided, in a manner not shown, on its lower edge in FIG. 2 with outwardly projecting cutting teeth, which are pushed radially outwards by a cone section 48 of the cap screw 40 when the axial pressure is applied to the expansion sleeve 46. With the aid of a combined impact-turning tool during the installation of the dowel, the expansion sleeve 46 is additionally rotated in order to produce the undercut 28 '.

In practice, the manufacture of the railway superstructure according to FIG. 1 is carried out as follows:
The continuous support plate 16 is manufactured by means of correspondingly precisely working pavers with a surface accuracy corresponding to the desired rail height profile. Then the sleepers 16 are placed with the intermediate layer of the flexible layer 21, the sleepers 16 preferably being pre-assembled with the rails 20 as a track grating section. Then, by means of alignment means (not shown), the thresholds 16 are adjusted in a lateral direction by a desired lateral adjustment to get the rails 20. Then the tensioning means 24 are attached as a permanent fastening of the sleepers 16 to the support plate 14. For this purpose, the dowel hole 28 is first made in the support plate 14 through the preformed through opening 30 of the tie 16 using a correspondingly long drill. Here, the through opening 30 serves as a drilling jig. The resulting drilling residues can easily penetrate into the cavity between the threshold 16 and the support plate 14 in order not to hinder the drilling process. Next, the dowel head 36 is inserted into the dowel bore 28 and, in the manner described, permanently fixed in the dowel hole 28 by combined turning and hitting the expansion sleeve 46 to produce the undercut 28 '.

Then the massive connecting bolt 32 is screwed onto the upper screw thread end 44 'of the cap screw 44 of the dowel head 46 and tightened while pressing the expansion sleeve 46 against the cone 48 of the cap screw 44. This reliably prevents the dowel connection from being loosened.

The cross section of the solid connecting bolt 32 is adapted to the cross section of the through hole 30 and the dowel hole 28 almost without play. As a result, thrust forces due to lateral movements of the threshold 16 relative to the support plate 14 in any horizontal direction are immediately derived into the support plate 14.

After inserting the connecting bolt 32 into the threshold 16 and the support plate 14, the screw head 34 is screwed in. The helical compression spring 38 between the screw head 34 and the threshold 16 is dimensioned such that it still springs in both directions at the desired threshold bias in order to maintain the desired bias even when the threshold is momentarily bent, for example under load.

It is also advantageous that any readjustment or even disassembly of the entire track grate section or individual is necessary Thresholds are readily possible, since only the screw head 34 and the connecting bolt 32 have to be unscrewed for this purpose.

A modified embodiment of the tensioning means 24, designated 24a, is shown in simplified form in FIG. It can be seen that this is a conventional expansion dowel attachment (i.e. without making an undercut). The dowel head 36a is expanded at both ends by corresponding expansion cones 48a and 49a, which can be seen in FIG. The upper expansion cone 49a is pushed against the expansion sleeve by the lower end of the connecting bolt 32a and the lower cone 48a by the head of the cap screw 44a of the dowel head 36a.

Projections 37a provided on the outer circumference of the expansion sleeve 46a ensure that the expansion sleeve 46a is locked in rotation in the dowel hole 28 of the support plate 14. The expansion cone 48a is at least approximately non-rotatably connected to the expansion sleeve 46a via a tongue and groove connection 39a symbolically indicated in FIG. 3. Driving projections 41a of the cap screw 44a, which engage in corresponding radial recesses in the expansion cone 48a, ensure a rotationally fixed connection of the expansion cone 48a and cap screw 44a. In this way it is ensured that the dowel head 36a does not rotate when the connecting bolt 32a is rotated accordingly in the arrangement according to FIG. 3 to produce the expansion effect.

To facilitate the rotation of the connecting bolt 36a, the latter is provided at its upper end with a rotary driver formation, here in the form of a radially extending end slot 51a. The rest of the structure is unchanged (screw head 34a; helical compression spring 38a and stepped washer 40a with centering in the through hole 30).

A further embodiment of the invention is shown in FIGS. 4 to 6, in which the tensioning means serve to temporarily fasten the sleeper to the support plate. Components that correspond in function to those in FIGS. 1 and 2, are provided with the same reference numbers, but each increased by the number 100.

The hydraulically bound base layer 112 is in turn applied on the frost protection layer 110 and on this the continuous base plate 114, preferably made of concrete, although asphalt or the like can also be used. The final sleeper attachment is done here by pouring the spaces between the sleepers 116 (as well as between the sleeper underside 143 and the support plate top 145) through concrete or possibly. also asphalt or the like.

In order on the one hand to obtain sufficient filling space between the underside 143 and the top 145 to avoid air inclusions and on the other hand to be able to place the sleepers 116 on the support plate 114 without a separate height adjustment, the support plate 114 is provided in particular with two support ribs 200 which are located in Extend the longitudinal direction of the rail and either with the required precision are already formed during the continuous production of the support plate 114 or possibly can also be subsequently produced or reworked in the desired manner. The support ribs 200 can be kept relatively narrow, since they only serve to temporarily support the track grate before pouring. Nevertheless, the track grate can already be driven on, at least for lighter rail vehicles, in particular when the support ribs 200 are essentially immediately below the rails 120.

According to the first exemplary embodiment, in the second exemplary embodiment, the sleepers 116 are also fixed to the support plate 114 after the lateral adjustment of the track grating by inserting the respective tensioning means 124 into the corresponding through opening 130 of the sleeper 116 and dowelling it with the support plate 114.

In FIG. 4, the first exemplary embodiment shows a dowel fastening of the clamping means 124 corresponding to FIG. 3 in the manner of an expansion dowel. To the above in this regard Reference is made to the structure and the assembly method. In principle, an expansion anchor according to FIG. 2 can also be used, although a correspondingly high pull-out strength is generally not required for the preliminary tie-bar fastening. Both in the first embodiment according to FIGS. 1 to 3 and in the second embodiment according to FIG. 4, the use of an adhesive agent may also be possible.

After the anchor 116 has been fixed in place by the one clamping means 124, said pouring out of the threshold spaces can then take place. In order to also limit the pouring space from the side, the support plate 114 according to FIG. 4 can be provided with edge bars 202, indicated by a broken outline, whose height essentially corresponds to the threshold height. The pouring material 204 is also indicated. After the pouring material 204 has at least partially hardened, the clamping means 24 can be at least partially removed again. The remaining openings, in particular the through bores 30, can be poured out if necessary to prevent corrosion damage.

Another type of dowel fastening is again shown in simplified form in FIGS. 5 and 6. The clamping means 124a now consists of a cap screw 134a and a mounting plate 210a, which is anchored to the support plate 114 by means of two shot dowels 212a. The mounting plate 210 is formed by a flat iron extending transversely to the longitudinal direction of the rail and projecting laterally on both sides above the sleeper 116, which is inserted into the space between the sleeper 116, which in turn is hollow here, and the support plate 114.

For the screw connection with the head screw 134a, the mounting plate 210a is provided, in particular welded, in the region of its center length with a threaded bolt 214a which projects upwards. A corresponding internal thread section 216a is formed at the lower end of the cap screw 134a, as can also be seen in FIG. 6. The head 134'a of the cap screw 134a is supported via a curved spring washer 218a on the upper side 142 of the threshold 116.

When assembling using the tensioning means 124a, the procedure is preferably to preassemble the sleeper attachment 124a to the sleeper 116 and then to place the sleeper 116 or the pre-assembled track grating section on the support ribs 200 of the support plate 114. After the side adjustment, the screw connection between screw head 134a and mounting plate 210a is then loosened to such an extent that the mounting plate 210a rests on the upper side 140 of the support plate 114. Through two dowel through openings 220a at the two ends of the mounting plate 210a projecting laterally beyond the threshold 116, a weft dowel 220 is then hammered in to fix the mounting plate 210a to the support plate 114. The screw connection is then tightened again, under certain circumstances to achieve a correspondingly high pretensioning force the screw connection can also be tightened to such an extent that the mounting plate 210a bulges a little (indicated in FIG. 6 with an interrupted outline and designated 210a ').

After the subsequent potting and at least partial curing of the potting material, the screw head 134a is loosened again. The passage opening 130 of the threshold 116 may be potted. The mounting plate 210a remains, which is not a further problem since it can be produced inexpensively.

Claims (26)

Track grille on continuous support plate (14) with temporary or permanent threshold attachment to the support plate (14) by means of tensioning means (24), in particular tensioning screws, characterized in that the tensioning means (24) are each fastened to the support plate (14) via at least one dowel connection. Track grating laid on a continuous support plate (14) with sleepers (16) placed on the support plate (14), possibly with a flexible layer (21) inserted between the support plate (14) and sleepers (16), and with temporary or permanent threshold attachment to the support plate (14) by means of tensioning means (24), in particular tensioning screws, characterized in that the tensioning means (24) are each fastened to the support plate (14) via at least one dowel connection and that the support plate (14) is an optionally reinforced concrete plate and / or the Dowel connection is designed as an expansion anchor connection. Track grate according to claim 1 or 2, characterized by only one tensioning means (24) per sleeper (16), which is arranged in the region of the center length of the sleeper (16). Track grate according to one of claims 1 to 3, characterized in that the tensioning means (24) passes through a substantially vertically extending, preferably pre-shaped through opening (30) of the sleeper (16). Track grate according to claim 4, characterized in that the preformed through opening (30) is designed as a drilling jig for producing a dowel hole (28) in the support plate (14). Track grate according to one of the preceding claims, characterized in that the threshold (16) in the region of the clamping means lies hollow on the support plate (14) (recess 22 or 26). Track grate according to one of the preceding claims, characterized by a spring element, preferably in the form of a helical compression spring (38), between the tensioning means (24) and the threshold (16). Track grille according to one of the preceding claims, characterized in that the tensioning means (24) is solid at least in the transition region between the support plate (14) and the threshold (16). Track grate according to claim 8, characterized in that the tensioning means (24) has a dowel head (36) which can be fixed in the support plate (14), a screw head (34) which is supported on the upper side of the threshold (42) and a dowel head which is solid at least in the transition area (36) with the screw head (34) connecting connecting bolt (32). Track grate according to claim 9, characterized in that the connecting bolt (32) forms the only connection between dowel head (36) and screw head (34). Track grille according to claim 10, characterized in that the cross-section of the connecting bolt (32) essentially corresponds to the cross-section of the through opening (30) in the sleeper (16) and the cross-section of the dowel hole (28) in the support plate (14). Track grille according to claim 11, characterized in that the connecting bolt (32) is screwed to the dowel head (36) and that the dowel head (36) has an expansion sleeve (46) with increasing expansion effect as the screw connection is tightened. Track grate according to claim 12, characterized by an expansion cone (48a, 49a) at each end of the expansion sleeve (46a). Track grille according to claim 12 or 13, characterized in that the screw head-side end of the connecting bolt (36a) is provided with a rotary driving formation, preferably in the form of a radially extending end slot (51a). Track grille according to one of claims 12 to 14, characterized in that at least one projection (37a) for rotational blocking in the dowel hole (28) of the support plate (14) is provided on the outer circumference of the expansion sleeve (46a) and that a cap screw (44a) of the dowel head ( 36a) is at least approximately non-rotatably connected to the expansion sleeve (46a). Track grate according to one of the preceding claims, characterized in that the dowel connection is designed as an expansion anchor connection, in particular an undercut impact anchor connection, or a glue anchor connection. Track grate according to one of the preceding claims, characterized in that the tensioning means has a mounting plate (210a) which is arranged between the sleeper (116) and the support plate (114) and which is fastened to the support plate (114) by means of at least one dowel connection and which also has a screw connection a head screw (134a) supported on the top of the threshold is connected. Track grille according to claim 17, characterized in that the mounting plate (210a) protrudes laterally at least on one side over the threshold (116) and is doweled in the projecting area with the support plate (114). Track grille according to claim 17 or 18, characterized in that the mounting plate (210a) is dowelled to the support plate (114) by means of at least one weft dowel (212a). Track grille according to one of claims 17 to 19, characterized in that the mounting plate (210a) is designed as a flat iron which runs transversely to the longitudinal direction of the sleeper and projects laterally on both sides beyond the sleeper (116). Method for laying a track grate on a continuous support plate (14) manufactured with a height profile that essentially corresponds to the desired rail profile, characterized in that the track grate is placed on the support plate (14) and, after lateral adjustment parallel to the longitudinal direction of the sleeper, thereby remaining on the support plate (14 ) that the sleepers (16) are fixed to the support plate (14) by means of clamping means (24) anchored to the support plate (14). Method according to claim 21, characterized in that only one tensioning means (24) is used per sleeper (16), specifically in the region of the center of length of the sleeper (16). Method for laying a track grate on a continuous support plate (114), which is provided in particular with at least one support rib (200) for the sleepers (116) running in the longitudinal direction of the support plate and having a height profile corresponding to the desired rail profile, characterized in that the track grate on the support plate or the at least one support rib (200), and after lateral adjustment parallel to the longitudinal direction of the sleeper, temporarily fixed on the support plate (114) by dowelling the sleepers (116) on the support plate (114) with the support plate (114) Clamping means (124) fixed, and that you then finally set the sleepers (116) on the support plate (114) by casting the threshold spaces. Method according to claim 23, characterized in that only one tensioning means (124) is used per sleeper (116), in the region of the center of length of the sleeper (116). A method according to claim 24, characterized in that the tensioning means (124) are at least partially dismantled after the threshold spaces have been poured out, and that openings remaining in the threshold (116) and, if appropriate, the support plate (114) are preferably poured out. Method according to one of claims 21 to 25, characterized in that a flexible layer (21), in particular a geotextile mat or the like, is inserted between the sleepers (16; 116) and the support plate (14; 114).

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