KR20140091756A

KR20140091756A - Slab track

Info

Publication number: KR20140091756A
Application number: KR1020147016497A
Authority: KR
Inventors: 건돌프 스피츠너; 로버트 새클러; 한스-크리스티앙 로즈만
Original assignee: 레일 원 게엠베하
Priority date: 2012-01-03
Filing date: 2012-10-19
Publication date: 2014-07-22
Also published as: EP2800833A1; DE102012000028A1; RU2014131710A; WO2013102504A1; EP2800833B1; DK2800833T3

Abstract

A slab comprising a track lattice comprising a concrete tread (2) and a rail (3) and supported on a base layer (5) and anchor blocks (7, 10) for fixing the concrete tread (2) Claims 1. A track (1) comprising a central area (6) arranged between rail supports and having a reduced width, in which area on both sides of the concrete sleepers (2) Characterized in that a fixed anchor block (7, 10) is arranged.

Description

SLAB TRACK {SLAB TRACK}

The present invention relates to a slab track comprising a concrete sleeper and a rail and including a track grid supported on a base layer and an anchor block for securing the concrete sleeper to the base layer.

Such a slab track has been supplied by the applicant for a long time under the name GETRAC (registered trademark). This is a slab track containing non-zigzag line, and the base layer is usually formed of asphalt. This slab track is characterized by supporting the track grid directly over the asphalt. Fixing the concrete sleepers to the asphalt layer is carried out using anchor blocks. When installed, the ties are placed on the asphalt layer and firmly and elastically fixed to the anchor block made of high strength special concrete. The anchor block is configured to disperse the forces of the occurring track in the longitudinal and transverse directions in the asphalt layer. The asphalt layer is manufactured in a similar way to the road construction method, with multiple layers being laid out using a high performance finisher that is automatically controlled. A bituminous base layer is bonded onto one gravel layer or hydraulically bonded base layer.

A sleeper comprising anchor blocks and a method of making slab tracks comprising such sleepers is known from DE 102 30 740 A1. The anchor block functions as a coupling element between the sleepers and the base layer. To this end, the concrete sleepers include recesses on the lower surface thereof, and the anchor blocks are inserted into the recesses to about half the height of the anchor block. The lower half of the anchor block is inserted into one cavity in the base layer and cast into a filling material.

EP 1 288 371 A2 discloses a wide sleeper for a slab track which is provided for a slab track named GETRAC A3. The disclosed concrete sleepers include a central area with reduced width, but only about wide width sleepers arranged at small intervals relative to one another. The cylindrical anchor block is disposed under the wide treadmill, on the one hand, in the recess below the wide treadmill, and on the other hand, in the recess of the base layer and cast. The recess of the asphalt layer is rectangular and protrudes sideways from the central area where the width of the sleeper is reduced in order to enable further work to be filled with the filling material.

These slab tracks, in which the sleepers are fixed by anchor blocks, have been found to be useful, but the installation cost is very high since once the recesses in the base layer have to be manufactured precisely. The sleepers are then placed in the recesses together with the anchor blocks or are projected from the recesses and the anchor blocks are cast.

Accordingly, an object of the present invention is to provide a slab track having a reduced manufacturing cost.

In order to solve the above-mentioned problems, according to the present invention, there is provided a slab track in which an anchor block fixed on a base layer is mounted on both sides of a concrete sleeper by including a central region in which a concrete sleeper is disposed between the rail- / RTI >

The present invention is based on the recognition that the mounting of the slab track can be simplified by laterally fixing the anchor block to the concrete sleeper. Accordingly, a part of the anchor block is disposed at the recess in the lower part of the sleeper, and the part is placed in the recess in the base layer, eliminating the expensive operation of mounting the anchor block to the lower part of the sleeper.

According to the slab track according to the present invention, it is preferable that the area where the width decreases is tapered toward the lower side of the concrete sleepers. As a result, the section of the area where the width decreases is the smallest on the lower side of the concrete sleepers and becomes larger toward the upper side of the concrete sleepers. This tapered configuration makes it possible to arrange the anchor blocks in an active locking manner to secure the sleepers on the base layer using the anchor blocks.

An anchor block formed in a semi-trapezoid, that is, a three-dimensional trapezoid, is also included in the scope of the present invention. It is preferably a symmetrical semi-rectangular shape that can be applied by being rotated 180 degrees. However, the present invention is not limited to an anchor block of a trapezoidal shape, and an anchor block may be formed in a truncated cone shape if the central area where the width of the concrete sleepers is reduced corresponds to a mirror inverted shape.

It is also within the scope of the present invention that the concrete tie is formed as a monobloc concrete tie in a prestressed concrete manufacturing process. Accordingly, the concrete tread is formed as an integral concrete finished part including a prestress stiffener, and can be placed on the base layer in this state.

An anchor block may be secured on the flat surface of the base layer to facilitate mounting of the slab track according to the present invention. This eliminates the task of forming recesses in the substrate, which previously had to be performed with a high degree of accuracy. Instead, the task of fixing the sleepers on the base layer is done only by active locking between the anchor blocks and the sleepers, where the anchor blocks are fixed on the flat surface of the base layer.

The slab track according to the present invention is particularly suitable for a base layer formed as an asphalt base layer or a concrete base layer. In the above two cases, the anchor block may be fixed with an asphalt adhesive material or a concrete adhesive material. According to another embodiment of the present invention, in the case of the first slab track according to the present invention, an intermediate layer is disposed on a contact surface between an area where the width of a concrete sleeper is reduced and an anchor block. Preferably, the intermediate layer is formed of an elastomer, a thin film or other material capable of rolling, so that the peak voltage can be reduced. This prevents the peak voltage from causing flaking of the concrete sleeper.

In a special case, the anchor block can be screwed to the base layer in the slab track, and a dowel to which the anchor bolt passing through the anchor block is screwed can be inserted into the base layer.

The anchor block is preferably held between two neighboring concrete sleepers in an active locking manner.

In the above-mentioned slab track mentioned in the introduction section, any sleepers may actually be used if the sleepers include a neck at the center.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to embodiments and drawings. The drawings are schematic and are as follows:
1 is a perspective view of a slab track according to the present invention.
2 is a longitudinal sectional view of the slab track shown in Fig.
3 is an enlarged view of the anchor block shown in Fig.
4 is a side view of the anchor block.
Fig. 5 shows the anchor block shown in Fig. 4 rotated by 90 degrees.
6 is a top view of the anchor block of Fig.
7 is a perspective view of the anchor block of Fig.
8 is a cross-sectional view of a slab track according to the present invention including the anchor block shown in Fig.
Figure 9 is a longitudinal view of the slab track of Figure 8;
10 is a cross-sectional view of the slab track of FIG.

The slab track 1 shown in Fig. 1 is substantially composed of concrete sleepers 2, which are formed by a prestressed concrete manufacturing method as monoblock sleepers and arranged at small intervals from each other. Each of the concrete treads 2 supports one pair of rails and the rails 3 are fixed to the upper surface of the concrete tread 2 by means of rail fixing portions 4. The concrete tie-downs 2 and the rails 3 together form a track grid supported on the base layer 5. In the illustrated embodiment, the base layer 5 is formed as an asphalt base layer, but other embodiments are possible, for example, the base layer is formed as a concrete base layer.

Referring to FIG. 1, each concrete sleeper includes an area 6 disposed between the rail supports and reduced in width, which area is tapered downward, i.e., toward the lower side of the concrete sleeper 2.

An anchor block 7 formed of a special concrete and formed in a trapezoidal shape is disposed in the area 6 where the width of the concrete sleeper 2 is reduced and is fixed on the base layer 5 using an asphalt adherent material. In the same way, another anchor block is provided on the opposite side of the concrete sleeper 2, not shown in Fig. The anchor block 7 comprises downwardly tapering sides which are exactly aligned with the sides of the area 6 of the width of the concrete tie 2, In other words, the angled edges of the anchor block 7 and the area 6 of reduced width have the same tilt angle. As a result, an active lock is formed between the anchor block (7) and the area (6) where the width of the concrete tie is reduced. So that the forces appearing in operation can be dispersed from the rails 3 to the base layer 5 via the concrete sleepers 2 and the anchor blocks 7. [ It is not necessary that all the concrete sleepers 2 are held laterally by the two anchor blocks 7, and in practice, for example, the second, third or fourth concrete sleepers are placed laterally in two anchor blocks It is enough if it is fixed by.

A track grating consisting of a concrete treadmill 2 and a rail 3 is arranged on the base layer 5 in the production of the slab track 1 and the concrete treadmill 2 selected after the aligning operation is paired with the concrete sleepers 2, Is fixed by an anchor block (7) which is arranged in the area (6) where the width is reduced on both sides of the base (2). Since the contour line of the anchor block 7 corresponds exactly to the contour of the concrete treadmill 2 in the area described above, an active locking connection between the concrete treadmill 2 and the anchor block 7 is formed.

Fig. 2 is a sectional view of the slab track 1. Fig. Referring to the drawings, two anchor blocks disposed laterally of the concrete treadmill 2 have a cross section that shrinks toward the base layer 5, and the movement of the concrete treadmill 2 is prevented by active locking. The concrete sleepers 2 are thus held in an active locking manner between the anchor blocks 7.

3 is a cross-sectional view and the anchor block 7 is enlarged and shown. In this figure, the anchor block 7 is fixed on the base layer 5 with an asphalt bonding material 8. An intermediate layer 9 formed of an elastomer and decreasing a peak voltage is disposed in a contact region between the area 6 where the width of the concrete treader 2 is reduced and the anchor block 7. [ So that flaking in the concrete sleepers 2 is prevented.

Figs. 4 to 7 show an anchor block 10 according to a second embodiment which is different from the anchor block 7 shown in the first embodiment and tapers upward. 4 and 5, the anchor block 10 has a trapezoidal cross section, and the cross section is tapered from the lower surface toward the upper surface. 6 and 7, the anchor block 10 is defined by six sides, and the top surface 11 of the anchor block 10 is formed of four tapered surfaces, and in the illustrated embodiment The slope is about 1%.

The slope of the vertical surfaces is 10: 1 for the illustrated embodiment. In the mounted state, the anchor block 10 is surrounded by an elastomer (not shown).

Figures 8, 9 and 10 show a slab track 12 consisting of a concrete tie 2, a rail 3 and a rail fixing portion 4, respectively, corresponding to the components of the first embodiment. One anchor block 10 is disposed between two neighboring concrete treads 2 and the concrete treads 2 are held on one base layer by an anchor block 10.

In addition, the slab track 12 substantially corresponds to the slab track 1 of the first embodiment shown in Figs.

Claims

A slab track comprising a concrete track and rail and including a track grid supported on the foundation and an anchor block for securing the concrete track to the base,
Characterized in that the anchor block (7, 10), which is fixed on the base layer (5) in this region, is arranged between the railway support posts ) Of the first and second electrodes
Slab track.

The method according to claim 1,
Characterized in that said width reducing area (6) is tapered to the lower side of the concrete tie (2)
Slab track.

3. The method according to claim 1 or 2,
Characterized in that the anchor blocks (7, 10) are formed with a quadrilateral shape.
Slab track.

4. The method according to any one of claims 1 to 3,
Characterized in that the concrete tie (2) is formed as a mono-block concrete tie with a prestressed concrete manufacturing method.
Slab track.

5. The method according to any one of claims 1 to 4,
Characterized in that the anchor blocks (7, 10) are fixed on a flat surface of the base layer (5)
Slab track.

6. The method according to any one of claims 1 to 5,
Characterized in that said base layer (5) is formed as an asphalt base layer or a concrete base layer.
Slab track.

7. The method according to any one of claims 1 to 6,
Characterized in that an intermediate layer (9), which is preferably made of an elastomer, is arranged on the contact surface between the area (6) where the width of the concrete tie (2) is reduced and the anchor blocks (7, 10)
Slab track.

8. The method according to any one of claims 1 to 7,
Characterized in that the anchor block (7, 10) is fixed on the base layer (5) by means of an asphalt adhesive material (8) or a concrete adhesive material.
Slab track.

9. The method according to any one of claims 1 to 8,
Characterized in that the anchor blocks (7, 10) are screwed to the base layer (5) and are preferably screwed by means of anchor bolts threaded into a dowel.
Slab track.

10. The method according to any one of claims 1 to 9,
Characterized in that the anchor blocks (7, 10) are held in an active locking manner between two neighboring concrete sleepers (2)
Slab track.