WO2007062799A1

WO2007062799A1 - Concrete sleeper

Info

Publication number: WO2007062799A1
Application number: PCT/EP2006/011392
Authority: WO
Inventors: Hans-Ulrich Dietze; Hubertus Höhne; Josef Friedhelm Hess
Original assignee: Voestalpine Bwg Gmbh & Co.Kg.; Vae Gmbh
Priority date: 2005-12-01
Filing date: 2006-11-28
Publication date: 2007-06-07
Also published as: ATE460534T1; EP1957713A1; CN101316964B; ES2342005T3; TW200728559A; DK1957713T3; KR101079566B1; DE102005057647A1; DE502006006415D1; CN101316964A; KR20080075900A; EP1957713B1

Abstract

The invention relates to a monoblock clamping concrete sleeper (10) for a fixed railway having reinforcement (12), with the reinforcement being exposed with a section underneath the sole or bottom surface of the concrete sleeper. In order to allow the anchoring capability of the concrete sleeper to be predetermined to the desired extent, it is proposed that the reinforcement (12) be a section of a structural steel mesh to form an N-corner column with N > 3 bent section of a constructional steel mat and the exposed section of the reinforcement be a rest for longitudinal rods.

Description

description

concrete sleeper

The invention relates to a Monoblockspannbetonschwelle, in particular for receiving two rail fasteners, for a slab track, comprising a reinforcement which is exposed with a transverse to the longitudinal axis of the monoblock stress concrete sleeper reinforcement section below the sole or bottom surface of the Monoblockspannbetonschwelle and includes longitudinal and transverse rods.

DE-A-100 04 346 relates to a Monoblockspannbetonschwelle whose reinforcement in the longitudinal direction spaced from each other arranged U-shaped bracket, whose extending below the sole free ends are hook-shaped to receive longitudinal and transverse bars.

A Monoblockspannbetonschwelle according to DE-C-197 41 059 has a from the longitudinal direction of the threshold spaced apart extending brackets existing reinforcement. The geometry of the bracket corresponds to an open rectangle. A continuous, so uninterrupted section of the bracket runs below the sill. The concrete sleepers are supported for positionally accurate pouring into an in-situ concrete on support feet, the widths of which is slightly less than the extension of below the threshold extending portion of the reinforcement. The respective side legs of the section, which extends outside the support, can be connected to running in the longitudinal direction of the threshold anchor bars. A bi- or two-block concrete sleeper is known from DE-A-199 63 664. The blocks are connected to each other via lattice girders, in which longitudinal members extending in the longitudinal direction of the rail can be inserted.

A construction of a slab track with two individual blocks consisting of concrete, each having a rail fastening, can be found in DE-U-200 11 481. The reinforcement of the individual blocks is formed by closed loops, which extend in sections below the block bottom. In the loops longitudinal or transverse reinforcements can be inserted. Within each block, the loops are connected to welded reinforcing bars.

A two-block concrete sleeper can also be found in DE-C-198 16 407. The reinforcement consists of so-called lattice girders with three longitudinal bars forming the edges of a triangular prism and two meandering serpents connecting them. Due to the construction of the reinforcement, different lattice girders must be used depending on the moment of resistance to be achieved, so that a corresponding storage of different reinforcements is required.

In a slab track according to EP-A-0 905 319, sleepers have under the sole extending brackets and anchor irons, with which the sleepers are integrated into an in-situ concrete of a slab track.

Corresponding brackets are also on the soles or bottom surfaces of concrete sleepers according to DE-U-297 03 508 before, which are associated with a support plate of a slab track outgoing bracket, which in turn are connected to the former.

According to DE-C-197 41 059 corresponding mutually spaced bracket or anchor bars are connected to longitudinal bars, which are cast in the running on the support layer of the slab road concrete. The present invention is based on the object, a monoblock stress concrete threshold of the type mentioned in such a way that a safe handling of the threshold between place of manufacture and use is carried out without the risk that the outside of the concrete sleeper extending reinforcement is bent , At the same time, the reinforcement should be designed such that an anchoring ability of the threshold is given. Furthermore, an economical production should be possible.

To solve the problem, the invention essentially provides that the reinforcement is an N-square column bent from one or more sections of structural steel mesh with N> 3, that the exposed reinforcement section comprises continuous or substantially continuous sections of the transverse bars of the structural steel mat, that the Reinforcement section has at least two welded to the sections longitudinal bars of the reinforcing steel mat and supports for insertable between the sections of the cross bars and the sole further or suspendable on the sections further longitudinal bars.

Deviating from the prior art, a reinforcement for a prestressed concrete sleeper is provided, which consists of one or more bent sections of a welded steel mat, which is also referred to as Baustahlgewebe. The structural steel mat or the fabric consists of intersecting rods, which are usually welded together. In this case, the section forming the reinforcement has at least two longitudinal bars which are welded to the sections of the transverse bars which are outside, d. H. run below the threshold sole. The corresponding sections are basically formed continuously, so not interrupted. However, the invention is not abandoned when the section is severed.

Preferably, at least two longitudinal bars extend within the concrete sleeper. The transverse rods are preferably bent in such a way that a trapezoidal geometry results, wherein the ends of the shorter transverse legs extend at a distance from each other within the concrete sleeper. Longer base leg of the curved crossbar forms supports for further longitudinal bars to be inserted or suspended. This makes it possible to produce standard concrete sleepers with the same reinforcement, in which, however, the anchoring ability of the threshold in the slab track is changed by the additionally inserted or attachable longitudinal bars, so can be made to the desired degree of reinforcement. In the case of a rectilinear course of the arm, which runs parallel or approximately parallel to the sole, of the exposed section of the reinforcement, longitudinal bars can also be arranged at the required circumference at a distance from each other.

Independently of this, cost-effective production is possible due to the reinforcement bent from one or more sections of a reinforcing steel mat. The longitudinal bars connecting the crossbars further ensure that easy handling of the concrete sleeper from the place of manufacture to the point where the concrete sleeper is to be poured is achieved without the risk of undue bending of the exposed reinforcement section.

The teaching of the invention is particularly suitable for long sleepers of lengths of at least 170 cm, preferably lengths of 220 cm and more, which receive two rail fasteners. But shorter Monoblockspannbetonschwellen can be reinforced according to the teaching of the invention, ie those that are designed to accommodate a rail fastening and are connected in the track with appropriate sleepers. The rail fastener receiving shorter sleepers have usual lengths between 80 cm and 140 cm.

In particular, it is provided that the N-square column in cross-section has a U-geometry with inwardly angled longitudinal side leg edges, wherein preferably the transverse leg of which is below the bottom surface or the sole of the concrete sleeper section. Alternatively, the side legs may run with their edges angled inwardly below the bottom surface or sole of the concrete sleeper and connected via one or more brackets or wires. This ensures that when casting the concrete sleeper, the side legs are not bent uncontrollably. The or the strap or the wire connecting the legs then serves as a support for further longitudinal bars.

As N-cantilever column for the reinforcement in particular a trapezoid geometry comes into question, in particular an isosceles trapezoid in the cut is preferable. The shorter base leg of the N-square pillar having the trapezoidal geometry may be partially removed and run within the concrete sleeper. In contrast, the longer base leg extends below the sole of the concrete sleeper.

The invention is also distinguished by the fact that the reinforcement consists of two trapezoidal bodies running parallel to one another, each of which forms an N-square column. The respective longer base section should form the section extending below the sole of the concrete sleeper. Independently of this, the mutually parallel N-square columns should have an isosceles trapezoidal shape on average.

In addition, the trapezoidal bodies may be connected as the N-pillars outside the concrete sleeper via one or more stirrups or wires to ensure a unique geometrical relationship that is not altered by the casting of the concrete sleeper.

In a further development of the invention, it is provided that the bracket connecting the side legs or base legs of the N-columns is formed in a mat-like manner with angled longitudinal edges, which have the further longitudinal bars to achieve the desired degree of reinforcement in the slab track. Also, the invention is characterized in that the reinforcement comprises at least one zigzag-shaped lattice girder with angled within the concrete threshold U-shaped sections which extend perpendicular to the longitudinal axis of the concrete sleeper.

In particular, it is envisaged that the reinforcement comprises two sections of V-shaped curved lattice running along concrete threshold side surfaces with U-shaped sections running inside the concrete sleepers and that the lattices are connected via C-shaped brackets running transversely to the longitudinal axis of the concrete sleepbar, the lower part extending below the concrete sleeper Transverse leg support for the longitudinal bars is.

If the N-square column preferably has four edges that have a rectangular or trapezoidal geometry in section, then there is also the possibility that the reinforcement is designed as a hollow cylindrical body, so that the portion extending below the sole does not extend parallel to the bottom surface of the concrete tie, but to this a concave geometry shows.

The invention further relates to a slab track consisting of a base course, a height and positionally arranged on the support layer track grid rails and Monoblockspannbetonschwellen previously described type and a Betonverguss above the support layer to a predetermined height above the bottom of the threshold.

The monoblock tension concrete sleeper according to the invention itself preferably has half the height of a conventional concrete sleeper.

For more details, advantages and features of the invention will become apparent not only from the claims, the characteristics to be behaved-by itself and / or in combination, but also from the following description of the drawing to be taken preferred exemplary embodiments. Show it:

1 is a side view of a threshold with reinforcement,

2 shows a cross section through the threshold of FIG. 1,

3 shows the reinforcement of the threshold according to FIGS. 1 and 2 in an exploded view,

4 shows a second embodiment of a threshold in side view,

5 shows a cross section through the concrete sleeper of FIG. 4,

6 shows the reinforcement of the concrete sleeper according to FIGS. 4 and 5,

7 shows a third embodiment of a concrete sleeper with reinforcement in side view,

8 shows a cross section through the concrete sleeper of FIG. 7,

9 the reinforcement of the concrete sleeper according to FIGS. 7 and 8,

10 is a fourth embodiment of a concrete sleeper with reinforcement in side view,

11 is a cross section through the concrete sleeper of FIG. 10,

12 shows the reinforcement of the concrete sleeper of FIG. 10 and 11 in exploded view,

13 shows a fifth embodiment of a concrete sleeper with reinforcement in side view, 14 is a sixth embodiment of a concrete sleeper with reinforcement in side view,

15 is a cross section through the concrete sleeper of FIG. 14,

16 is a plan view of the concrete sleeper of FIG. 14,

17 is a structural steel mat in plan view,

Fig. 18 is a sectional view of the steel mesh mat according to Fig. 16 in the bent state and

Fig. 19 is a Monoblockspannbetonschwelle in section.

In FIGS. 1-15 and 19, certain monoblock tensioning sleepers are shown purely in principle for a slab track, which are laid in particular in the area of points. These are preferably long sleepers. The concrete sleepers are cast in in-situ concrete, which in turn is applied as a layer on a particular hydraulically bound support layer. Beforehand, a support layer consisting of concrete sleepers and fastened to them, but not shown in the drawings, is placed on the support layer representing a mounting base layer and positioned in a height-adjusted manner.

The monoblock tension concrete sleepers are in particular long sleepers with a minimum length of 170 cm, in particular a length of 220 cm or more, on which two rail fasteners are applied. However, the invention also relates to monoblock tension concrete sleepers of shorter lengths intended for rail fastening only. Corresponding shorter sleepers usually have lengths between 80 cm and 140 cm and are connected in the track with a long sleeper. So that the monoblock stress-relieving sleepers can be produced cost-effectively, a section-possibly also a plurality of sections-of a structural steel mat, which is also referred to as a reinforcing steel mesh, is preferably bent into a column of desired geometry as a reinforcement. In this case, a portion of the reinforcement runs below the sole of the prestressed concrete sleeper, so that the exposed section serves as a support for further longitudinal bars. This makes it possible to influence with simple measures the anchoring ability of the threshold in the slab track, so turn off on the concrete used. At the same time there is the advantage that the moment of resistance is influenced in order to simplify the handling, ie before pouring into the concrete layer, so that the risk of damage and in particular of the bending of the reinforcement is minimized in their running outside the concrete sleeper section.

In Fig. 17, a corresponding structural steel mat 150 is shown in the non-bent state. The reinforcing steel mat 150 consists of intersecting longitudinal bars 152, 154, 156, 158 and transverse bars welded thereto, two of which are identified by the reference numerals 160 and 162 by way of example. If, in the exemplary embodiment, the longitudinal and transverse rods 152, 154, 156, 158 or 160, 162 are arranged relative to one another in such a way that they describe a right angle, other geometries are also possible. In that regard, reference is made to conventional structural steel mesh or Baustahlgewebe and their geometries. The same applies to the steel and the bar diameter. The reinforcing steel mat 150 is then bent along the lines 164, 166, 168, 170 such that a trapezoidal geometry results, as the sectional view of FIG. 18 illustrates. The corresponding reinforcement designated by the reference numeral 172 has a geometry of a square column. The reinforcement 172, which forms the envelope of a trapezoid, is then placed in a conventional manner in a formwork for the production of a monoblock tension concrete sleeper.

In Fig. 19, a corresponding monoblock tension concrete sleeper 174 is shown with a reinforcement in section, which corresponds to that of FIG. In addition, tension wires are drawn. Independently of this, the representations make it clear that the reinforcement 172 is provided with an extension comprising the longer base leg 176 of the trapezoid. Section 178 extends below the bottom of the concrete sleeper 174 to serve as a support for further longitudinal bars 182, 184. If two are shown in the drawing, the number may differ. Of course, there is also the possibility that no further longitudinal rod is introduced. The longitudinal bars 182, 184 can be inserted or suspended, as illustrated in principle in FIG. 18.

Regardless of this, due to the chosen configuration of the reinforcement 172, the anchoring ability of the threshold 174 in a slab track can be easily adapted, in particular, to the concrete used. However, the additional longitudinal bars 182, 184 also increase the resistance moment of the threshold 176 for handling thereof, thus avoiding the risk of damage, and in particular bending, of the reinforcement 172 in its exposed portion 178 during transport.

Hereinafter, other configurations and embodiments of reinforcements for monobloc tension concrete shafts will be described, wherein the respective reinforcement is always a bent portion of a reinforcing steel mat, as previously explained. Of course, the invention is not abandoned when the reinforcement consists of several sections of a steel mesh mat, which are bent and then connected together. For this purpose, in particular a barbed wire can be used.

In Fig. 1 - 2 is a Monoblockspannbetonschwelle 10 with two rail fasteners 11, 13 shown purely in principle. The prestressed concrete sleeper 10 has a reinforcement 12, which consists of a bent to an open rectangle construction steel fabric with inwardly angled side leg longitudinal edges 14, 16.

The reinforcement 12 is consequently composed of longitudinal bars 18, 20 running within the concrete sleeper 10 and these connecting transverse bars 22, 24. The longitudinal bars 18, 20 and the transverse bars 22, 24 may be dimensioned differently. Preferably, the longitudinal bars 18, 20 extending in the longitudinal direction of the threshold 10, a diameter of, for example, 16 mm and transverse to the longitudinal axis of the threshold 10 transverse bars 22, 24, a diameter of about 6 mm on. However, it is not absolutely necessary that the transverse rods 22, 24 extend in a plane which extends perpendicular to the longitudinal axis of the threshold 10, but to this can describe an angle of for example 45 ° to <90 °, as this in principle will be explained in connection with FIGS. 13-15.

The reinforcing 12 forming bent structural steel mat or Baustahlgewebe is open below the concrete sleeper 10, thus forming no closed in section rectangle. Rather, there is a U-geometry, wherein the side legs 26, 28 angled or bent inward (edge portions 14, 16). The edge portions 14, 16 thus form with the side legs 26, 28 a V or hook geometry.

The side legs 22, 24 are connected via a function of a bracket performing another portion 30 of a structural steel mat, wherein the portion 30 has at least two longitudinal bars 32, 33 welded with transverse bars 37, which are thus part of the section of the structural steel mat. In addition, further longitudinal bars 34, 35 can be inserted. The section 30 may also be referred to as a reinforcement section.

The ironing function portion 30, when casting the prestressed concrete sleeper, ensures that the side legs 26, 28 of the troughed portion of the reinforcement 12 can not be bent.

By inserting or attaching the further longitudinal bars 34, 35 there is the advantage that the Verankerungsiahigkeit the finished threshold can be changed to the desired extent. Also, the moment of resistance of the concrete sleeper 10 is changed.

The longitudinal bars 34, 35 may have a dimensioning, such as the longitudinal bars 32, 33 welded firmly to the transverse bars 37, without, however, limiting the invention. If, in the exemplary embodiment, two additional longitudinal bars 34, 35 are inserted from the section serving as a support and extending below the threshold soleplate, the number may deviate from this.

The section has angled longitudinal edges 36, 38, which can be easily hung in the U-shaped portion of the reinforcement 12 and secured thereto, as is apparent from Fig. 2. In particular, it is provided that the angled longitudinal edges 36, 38 are bent around longitudinal bars 40, 42 of the reinforcing steel mat, which extend in the inner corners of the lateral side edges 26, 28 merging into the longitudinal side edges 14, 16.

The exemplary embodiment of FIGS. 4-6 differs from that of FIGS. 1-3 in that a concrete sleeper 44 has a reinforcement 46, which according to FIGS. 1-3 has, in section, a U-geometry with longitudinal side edges 48 angled inwards. 50, which, however, extend within the monoblock tension concrete sleeper 44. The thus extending outside the concrete sleeper 44 transverse leg 52 of the reinforcement 46 then serves as a support for the desired extent to be introduced longitudinal rods 54, 56. Independently of this go from the transverse leg 52 longitudinal rods 55, 57, which are welded to the transverse leg 52.

As is apparent from the sectional views of FIGS. 2 and 5, the reinforcements 12, 46 tensioning wires 53, 58, 60, 62 surrounded the prestressed concrete sleeper 10, 44, so that a simple positioning and fixing is possible.

Furthermore, the reinforcement extends in the drawing to be taken exemplary embodiments viewed in the longitudinal direction within the concrete sleeper, does not penetrate their faces. The end faces of the reinforcement can be closed, for example, with a grid, in order to reduce or prevent cracking in the concrete sleeper.

Assign the reinforcements 12, 46 a closed or open cuboid geometry, in which case, if the non-closed side below the concrete sleeper 10, ie runs under the sole 64, via a function of a bracket having portion 30 of a steel mesh or other fasteners, the wires are closed, it can according to the exemplary embodiment of Fig. 7-9 a concrete sleeper 66 have a reinforcement 68, which shows an open trapezoidal geometry. In other words, the reinforcement 68, which is also a bent structural steel fabric with longitudinal bars 70, 72 and transversely to these extending transverse bars 74, 76, a trapezoidal geometry on average, with longer base leg 78 below the concrete sleeper 66, ie below whose sole 80 runs. The shorter base leg 82 is embedded in concrete and interrupted, as illustrated in particular in FIG. 9. According to the teaching of the invention, the base leg 78 serves as a support and fastening for further longitudinal bars 84, 86, via which the anchoring capability and the resistance moment of the concrete sleeper 66 can be adjusted. Independently of this, longitudinal bars 85, 87 are welded to the transverse rods 74, 76, which, as shown in FIG. 9, is located in the vertices of the trapezoid. The longitudinal rods 85, 87 are therefore part of the structural steel mat.

Runs in the longitudinal direction of the concrete sleepers 10, 44, 66 each have a reinforcement, which may have a cuboid or trapezoidal shape, so according to the embodiment of FIGS. 10-12 also has the possibility in a concrete sleeper 88 two mutually parallel reinforcements 90, 92nd introduce, which can show a trapezoidal geometry in section, with longer base legs 94, 96 below the concrete sleeper 88, ie under the sole 99 runs. In this case, the base leg 94, 96 is preferably interrupted, that is not closed, as is apparent from the sectional views of FIGS. 11 and 12.

In order to exclude when pouring the concrete sleeper 88 that the reinforcements 90, 92 are bent outwards, they can be fixed to each other below the concrete sleeper 88 via a bracket 98, a wire or a similar element. Independently of this, the base legs 94, 96 of the reinforcement 90, 92 which extend below the sole 99 form supports for further longitudinal bars 100, 102 in accordance with the previously described task.

The reinforcements 12, 46, 68, 90, 92 are according to the invention sections of bent Baustahlgewebe or mats, so have the illustrated longitudinal and transverse bars preferably different dimensions. It is provided according to the embodiment of FIGS. 1 to 12 that the cross bars, which are exemplified in Figs. 1 - 9 by the reference numerals 22, 24, 74, 76, define planes perpendicular to the longitudinal axis of the respective Monoblockspannbetonschwelle 10th , 44, 66, 88 run.

According to the embodiment of FIG. 13, it is also possible to bend a reinforcing wire mesh 105 over the diagonal of the rectangles formed by the longitudinal and transverse rods. This results from FIG. 13. Thus, a concrete sleeper 104 has only bars 106, 108 running obliquely to the longitudinal axis of the concrete sleeper 104, with a section 110 extending below the concrete sleeper 104 likewise forming supports or fastening of longitudinal bars 112.

Reinforcement 114 of a concrete sleeper 116 to be taken from FIGS. 14 to 16 consists of V-shaped grids 134, 136 or grid sections running parallel to the outer side surfaces 118, 119 of the concrete sleeper 116, which legs 124, 126 produce a V geometry. Here, the legs 124, 126 extend in sections below the concrete sleeper 116. The inside of the concrete sleeper 116 extending ends (tips) are bent towards each other, so that in side view results in a U-shape (Fig. 15). The bent portions 128, 130 extend along the support surface 132 of the concrete sleeper 116. In this case, a corresponding grid 134, 136 along each side outer surface 118, 119 extend.

The corresponding grids 134, 136 are connected by means of brackets 138 which are C-shaped in cross-section and extend transversely to the concrete sleeper longitudinal axis, longitudinal bars 142 being welded from their transverse legs 140 extending below the concrete sleeper 116, 143 go out according to the teaching of the invention. Corresponding longitudinal bars can also run within the concrete sleeper 116. Furthermore, further longitudinal bars can be inserted.

Due to the formation of the quasi-zig-zag forming and along the longitudinal outer sides 118, 1 19 extending grating 134, 136 with the running within the concrete sleeper 116 mutually bent portions 128, 130 and the grid 134, 136 connecting the C-geometry forming transverse rods as the bracket 138 also results in an N-cantilever as reinforcement 1 14th

Claims

Patent claims concrete sleeper

A monoblock tension concrete sleeper (10, 44, 66, 88, 116, 174), in particular for receiving two rail fastenings (11, 13), for a solid track, comprising a reinforcement (12, 46, 68, 90, 92, 114, 172) which is exposed with a reinforcement section (30, 178) extending transversely to the longitudinal axis of the monoblock stress-relieving threshold below the sole (64, 80, 99, 180) or bottom surface of the monoblock stress-concrete sleeper, and longitudinal and transverse rods (18, 20, 22, 24, 32, 33, 34, 35, 40, 42, 54, 55, 56, 57, 70, 72, 74, 76, 84, 85, 86, 87, 100, 102, 106, 108, 112, 142, 143, 152, 154, 156, 158, 160, 162, 182, 184), characterized in that the reinforcement (12, 46, 68, 90, 92, 114, 172) is one of one or more sections of structural steel mesh (150). bent N-square column with N> 3 is that the exposed reinforcement section (30, 178) comprises continuous or substantially continuous portions of the transverse rods (22, 24, 74, 76, 160, 162) of the structural steel mat that the rebar at least two longitudinal bars welded to the sections (18, 20, 32, 33, 40, 42, 55, 57, 70, 72, 85, 87, 106, 108, 112, 142, 143, 152, 154, 156, 158) ) of the reinforcing steel mat and support for insertable between the sections of the cross bars and the sole or on the sections suspendable further longitudinal bars (34, 35, 54, 56, 84, 86, 100, 102, 182, 184).

2. concrete sleeper according to claim 1, characterized in that the N-cantilever column in section a U-geometry with inwardly angled side leg edges (48, 50).

3. concrete sleeper according to claim 1 or 2, characterized in that transverse limb (52) of the U-shaped geometry having a N-square column of below the bottom surface (30) of the concrete sleeper (44) extending portion of the reinforcement (46).

4. concrete sleeper according to at least one of the preceding claims, characterized in that the side legs (26, 28) of the N-cantilever column with their inwardly angled longitudinal edges (14, 16) below the bottom surface (64) of the concrete sleeper (10) and over a bracket (30) are connected, the support for the further longitudinal bars (34, 35).

5. concrete sleeper according to at least one of the preceding claims, characterized in that the N-square column has a trapezoidal geometry in cross section.

6. concrete sleeper according to at least one of the preceding claims, characterized in that the N-cantilever has geometry of an isosceles trapezoid.

7. concrete sleeper according to at least one of the preceding claims, characterized in that shorter base leg of the trapezoidal geometry having N-cantilever is at least partially removed.

8. concrete sleeper according to at least one of the preceding claims, characterized in that longer base leg (78) of the trapezoidal geometry having N- Kantant column below the bottom surface (80) of the concrete sleeper (66) extending portion of the reinforcement (68) and supports for further longitudinal bars (84, 86).

, Concrete sleeper according to at least one of the preceding claims, characterized in that the reinforcement consists of two mutually parallel preferably trapezoidal grating bodies (90, 92).

10. concrete sleeper according to at least one of the preceding claims, characterized in that longer base legs of the trapezoidal grid body (90, 92) extending below the bottom surface (98) of the concrete sleeper (88) extending portion for receiving the desired number of further longitudinal bars (100, 102nd ).

11. concrete sleeper according to at least one of the preceding claims, characterized in that the mutually parallel trapezoidal body (90, 92) outside the concrete sleeper (88) via a bracket or a wire (98) are connected.

12. concrete sleeper according to at least one of the preceding claims, characterized in that the reinforcement (172) or the curved Baustahlgewebe (150) extending in the longitudinal direction of the concrete sleeper (10, 44, 66, 88) longitudinal bars (152, 154, 156, 158) and transverse to these extending transverse bars (160, 162).

13. concrete sleeper according to at least one of the preceding claims, characterized in that the reinforcement (105) is a portion of a structural steel fabric which is bent over diagonals of the rectangles formed from the intersecting longitudinal and transverse bars (Fig.13).

14. concrete sleeper according to at least one of the preceding claims, characterized in that the reinforcement (114) comprises at least one zigzag-shaped lattice girder (120) within the concrete sleeper angled U-shaped sections (128, 130) perpendicular to the longitudinal axis of Concrete threshold (116) run.

15. concrete sleeper according to at least one of the preceding claims, characterized in that the reinforcement (114) along two concrete threshold side surfaces (118, 119) extending sectionally V-shaped curved grid (134, 136) extending within the concrete sleeper U-shaped sections (128 , 130), and in that the grids are connected by means of C-shaped brackets (138) running transversely to the concrete sleeper longitudinal axis, whose transverse limbs (140) running below the concrete sleeper are supports for the longitudinal bars (142).