KR20160009030A - Concrete sleeper and solid carriageway - Google Patents

Abstract

The present invention is embodied in a concrete recess (9) in a concrete sleeper (1) together with its upper section and is resiliently mounted by a ring (14) made of elastomeric material and, together with its lower section, Which can be inserted into a rechargeable gap (19) in the upper layer of the concrete tread (1), characterized in that it comprises a base (1) of elastic material on the lower surface of the concrete tread (1) 7 and 8 are disposed.

Description

CONCRETE SLEEPER AND SOLID CARRIAGEWAY}

The present invention relates to a concrete sleeper for a solid lane, wherein the upper section is inserted into an underside recess in the concrete sleeper and is resiliently mounted by a ring produced from an elastomer, And an anchor block that can be inserted into a rechargeable clearance within the rechargeable clearance.

In German utility model DE 202 13 667 U1, a concrete sleepers for solid lorries are proposed. The solid lane comprises a lower supporting layer, a first applied asphalt layer and a second asphalt layer applied as a top layer. The top layer has spacings in which the anchor blocks are inserted so that the bottom section of the anchor block is disposed within the gap and the top section of the anchor block is disposed within the bottom recess within the concrete tread. Concrete sleepers are formed as wide sleeper, that is, only a small distance is provided between two adjacent concrete sleepers. Such solid lanes are provided by the applicant under the name Getrak (R).

A similarly constructed solid lane is described in DE 102 30 740 A1. The elastic ring disposed between the concrete tie and the anchor block is conically shaped on its outer surface, thereby making insertion easier. There is a thin nonwoven to compensate for the heterogeneity that may occur in the upper layer on the lower surface of the concrete sleepers. Since the concrete sleeper is rigidly embedded in a solid support layer, usually produced from asphalt in the case of such a system, it can absorb loads when rail cars pass over it and can distribute it longitudinally And is mounted with elastic fastening.

Such solid lanes with elastic interlayers exhibit a mass-elastic system in which tremor and structure-borne sound can be transmitted to adjacent surface areas, buildings and structures. These waves cause noise (secondary air propagation noise) in the audible frequency range and cause vibrations of the ground or the building. When designing such a solid lane, it is attempted to fix the amplitude of the produced frequency range and vibrations, such that the resulting haze or sound remains confined to certain frequency ranges that do not exhibit any disturbance .

Accordingly, the present invention is based on the object of providing a concrete railway for a solid lane in which hazards are transmitted to less adjacent areas.

In order to achieve this object, it is provided that in the case of the concrete sleepers mentioned in the opening part according to the invention, the base of the elastic material is arranged on the lower face of the concrete sleepers.

The present invention therefore provides a significant improvement, i. E. A reduction in vibration emissions by mass placed on the elastic and increased elasticity of a mass-spring system which is chosen to be as smooth as possible, Based on discovery.

In the case of conventional solid lanes, only high-elasticity rail fastenings have resilient properties. Concrete ties, which can have significant masses of 300-1200 kg, are however firmly mounted on the top layer in the case of conventional solid lanes.

According to the invention, in contrast, the base of the elastomer is arranged on the lower surface of the concrete tie, whereby the mass (concrete tie) mounted on the elastic body (base) Compared with the conventional method. The test results show that as a result of the concrete sleepers according to the invention, the mines are less conveyed around in comparison with conventional solid lanes.

The base of the concrete sleeper according to the invention can be made of an elastomer; In this case, ethylene-propylene-diene monomer (EPDM) is particularly preferable. The base may not be attached or may be connected to a concrete sleeper, for example by gluing.

In the case of a concrete sleeper according to the invention, the base is designed according to static and dynamic requirements; In particular, the thickness and strength of the base are set such that a necessary or desired settlement is achieved so that when the rail cars pass over them, they are fitted in relation to the stability of the rails. The base preferably has a thickness between 6 mm and 20 mm; A base thickness of between 8 mm and 14 mm is particularly preferred. In the case of such a base, the settlement can reach 1.5 mm to 4 mm.

In order to improve the mechanical strength of the base of the concrete sleeper according to the present invention, the base may be provided with a nonwoven fabric on one side or both sides.

The present invention can provide having a spacing space in the area of the bottom recess for the anchor block. If appropriate, a spacing space may also be provided at the ends of the sleepers. This space can be circular or rectangular, and therefore the anchor block can be mounted without any problems. The anchor block need not necessarily be round or cylindrical, and may also be rectangular or hexagonal. Alternatively, the base may be formed in two parts, such that the first base section is disposed under one sleeping block and the second base section is disposed under the second, opposite sleeping block. Depending on the respective design, it may also be provided that the base is not formed in its complete surface area below the sleeping block or rail bed; Instead, it can be formed, for example, as a strip made narrower than the rail bed.

It is also contemplated that the anchor block of the concrete sleeper in accordance with the present invention has a step with a diameter increasing downward, and the outer edge of the step is preferably round. The round step prevents the ring made of the elastomer from being damaged by movement that occurs over millions of times during operation.

Unlike the prior art, there is no sharp edge in this position, so damage to the elastomeric ring is prevented.

The width of the step of the anchor block is set such that the ring is located approximately half of its radial width on the step of the anchor block in this case.

It is also within the scope of the present invention that the bottom recess in the concrete tread has a peripheral, preferably round, step, as the ring is located at its upper outer edge. The ring is preferably located about half of its radial width relative to the step of the concrete sleeper. This means that a ring with a rectangular or approximately rectangular cross section is placed in contact with the opposite corner points in two diagonals, so when subjected to a load it undergoes shearing deformation and in a similar way to a parallelogram . The cause of this deformation is that the ring is located on the outer edge of the upper part of the concrete sleeper, on the one hand, and on the inner edge of the lower part, relative to the step of the anchor block, on the other. If the railway cars pass over them and the concrete sleepers are subject to longitudinal loads, then the base of the concrete sleepers and at the same time the ring undergoes longitudinal spring deflection; The generated horizontal forces are introduced into the support layer through the anchor block. The ring is preferably formed into a circle; It is also possible to have other configurations which apply to the section of the anchor block, for example the ring may be formed as a rectangular, square or hexagonal edge.

In the case of a concrete sleeper in accordance with the invention, the ring is therefore fixed at the top and bottom, since the ring is located at the top of the step or step with respect to the spacing in the concrete sleeper and with respect to the step of the anchor block, . What is essential here is the fact that the ring is mounted or supported at the top on its outer surface and on its bottom on its inner surface. This causes a previously described parallelogram (such as shear deformation), which allows for a particular longitudinal movement of the mounted concrete treadmill. This shear deformation has the advantage that the ring is then subjected to only moderate loads, and as a result a long service life can be expected.

The present invention further relates to a solid lane comprising a plurality of concrete ties of the type described embedded in a top layer or backing layer, wherein the top layer or backing layer is filled with a casting compound on its top surface, And has a space for anchor blocks.

Further advantages and details of the present invention will be described below based on preferred embodiments with reference to the drawings. The drawings are schematic representations.
1 shows a side view of a concrete sleeper according to the present invention.
Figure 2 shows a plan view of the concrete sleeper from Figure 1;
Figure 3 shows a transversely sectioned cross section of a sleeper embedded in a solid lane.
Figure 4 shows a longitudinal section view of a concrete sleeper according to the invention embedded in a solid lane.

As a side view and a front view, the concrete sleepers 1 are shown in Figs. 1 and 2 as wide width sleepers and include two sleepers blocks 2, 3 on the upper face on which the rail beds 4, 5 are formed. The two sleeping blocks 2 and 3 are interconnected by an intermediate section 6 having a width smaller than the sleeping blocks 2 and 3 (as can be seen in figure 2), in this preferred embodiment It should be understood that the wide width sleepers described are not limited in this respect because the concrete sleepers may also be in some other form, for example cuboidal. Along with the rail beds 4, 5 and the intermediate section 6, the sleeping blocks 2, 3 form an integrated, integral part. Bases 7, 8 of elastic material are arranged under the sleeping blocks 2, 3, respectively. In a representative preferred embodiment, the base is composed of ethylene-propylene-diene monomer (EPDM) and has a thickness of 14 mm. However, the displayed thickness is not to be understood as limiting; rather, the thickness of the base may generally be between 6 and 20 mm; The thickness of the base used is set within the limits of the strength of the concrete sleepers and the tuning frequency.

On its lower surface, the concrete sleeper 1 has, in its middle section 6, an annular recess 9 into which an anchor block with an elastic ring can be inserted. In the mounted state, the concrete sleeper 1 is coupled to the support of the solid lane through the anchor block, so that horizontal forces can be transmitted into the foundation ground. Vertical forces are introduced into the support layer from the concrete sleeper 1 through the bases 7, 8. In the case of solid lanes, anchor blocks are provided for at least every two or three concrete sleepers.

Figure 3 shows a concrete sleeper 1 of a section cut laterally in the region of its recess after being mounted into a solid lane. The concrete sleeper 1 has a plurality of reinforcing rods 10, 11 which are untensioned or initially pretensioned. An anchor block 12 is disposed below the concrete sleeper 1 and fixed by a mounting band 13. There is an elastic ring 14 produced from an elastomer between the anchor block 12 and the concrete sleeper 1. It can be seen in Figure 3 that the anchor block 12 has step 15. The anchor block 12 has a larger diameter below the step 15 than above. The outer edge formed by the anchor block 15, where the edge of the ring 14 is located, is round. 3, the ring 14 is also located approximately half its width on the round step 15; It can be seen that the outer edge of the ring 14 is in contact with the side of the recess 9. The outer edge of the ring 14 is not fixed in the longitudinal direction, so that the ring 14 can move at least slightly in the longitudinal direction. An empty space is formed between the upper surface of the anchor block 12 and the lower surface of the recess 9.

The recess 9 in the concrete tread 1 has a peripheral step 17 with an outwardly increasing diameter and the ring 14 is located at its upper outer edge with respect to this step 17 do. Like step 15, step 17 is round, thereby preventing damage to the ring when the step undergoes strain under load. It is shown in Figure 3 that the ring 14 is located at about half its radial width relative to the step 17 of the recess 9 in the concrete tread 1.

In the production of solid lanes, the asphalt support layer 18 is provided with an interval 19 for the anchor blocks 12. The gap 19 is in the form of a cylinder and is adapted to the size of the anchor block 12; The depth of the gap 19 is such that the void space 20 is present below the anchor block which is inserted with the concrete treadmill and is subsequently cast into the casting compound or casting mortar 21 after the positioning and alignment of the concrete treadmill 1 Is selected. Casting slits 22 into which the casting compound 21 is introduced extend laterally from the gap 19.

The concrete sleepers 1 have rail fastenings rather than high-elasticity rail fastening, unlike conventional solid lanes. The rail fastenings used allow for longitudinal and lateral compensation. The longitudinal compensation is possible by shims of various thicknesses, and side compensation is possible by angled guiding plates of various widths. In addition, there is a solid intermediate layer disposed between the rails and the surface of the concrete and consisting of ethylene vinyl acetate (EVA).

Figure 4 shows a solid lane 23 comprising a concrete sleeper 1, mounted on a rail 24, supported by a rail fastening 25. The concrete sleeper 1 is connected to the asphalt top layer 26 located above the asphalt support layer 27 through the anchor block 12. The asphalt support layer comprising a plurality of layers is mounted on the antifreeze layer 28. The load generated when passing over the solid lane is introduced into the asphalt top layer 26 through the bases 7, 8 which are arranged substantially below the concrete sleeper 1. As a result, a settlement of 1.4 to 4 mm is generally generated. This has the advantage that the total weight of the concrete sleeper 1 is resiliently mounted, thereby lowering the adjustment frequency of the transmitted vibration. On the other hand, the spring stiffness of the bases 7, 8, with the elastic function of the elastic-mass system, is a flexible design, which likewise has a positive effect on the adjustment frequency.

As rail cars pass over them, the sleepers move down in the vertical direction and then back up. The ring 14 can absorb these movements without any wear because the ring is on the one hand against the anchor block 12 and on the other hand against the recess 9 in the concrete sleeper 1 At least two diagonals are located on opposite corners.

In another configuration, the solid lanes are produced in a concrete configuration. In this case, the concrete ties are mounted on the concrete support by anchor blocks.

1: Concrete sleepers
2, 3: sleeping block
4, 5: Railbed
6: Middle Section
7, 8: Base
9: recess
10, 11: reinforcement rod
12: Anchor block
13: Mounting band
14: ring
15: Step
17: peripheral step
19: Spacing
20: Free space
21: casting compound
22: Casting slit
23: solid car
24: rail
25: Rail fastening
26: Asphalt upper layer
27: Asphalt support layer
28: Anti-frost layer

Claims (14)

The upper section is inserted into the bottom recess 9 in the concrete treadmill 1 and is resiliently mounted by the ring 14 produced from the elastomer and the lower section is inserted into the rechargeable gap 23 in the upper layer of the solid lane 23 (1), which has an anchor block (12) which can be inserted into a concrete tread (19), characterized in that a base (7, 8) of elastic material is arranged on the lower surface of the concrete tread A concrete sleeper for a solid lorry.
The concrete sleeper of claim 1, wherein the bases (7, 8) are made of ethylene-propylene-diene monomer (EPDM).
3. A concrete sleeper for a solid lane according to any one of claims 1 to 3, characterized in that the bases (7, 8) have a thickness of 6 to 20 mm, preferably 8 to 14 mm.
A concrete sleeper for a solid lane according to any one of claims 1 to 3, characterized in that the base (7, 8) is provided with a nonwoven fabric on one or both sides.
8. An anchor block (12) according to any one of claims 1 to 4, characterized in that the bases (7, 8) are spaced or formed as two parts in the area of the bottom recess (9) (2, 3) or below the rail bed (2).
6. A concrete sleeper for a solid lane according to any one of claims 1 to 5, characterized in that the anchor block (12) comprises a step (15) having a downwardly increasing diameter.
7. A concrete sleeper according to claim 6, wherein said outer edge of said step (15) is rounded.
A concrete sleeper for a solid lane according to claim 6 or 7, characterized in that half or less of the radial width of the ring (14) is located on the step (15) of the anchor block (12).
Method according to one or more of the preceding claims, characterized in that the bottom recess (9) in the concrete tread (11) has a peripheral step (17) with respect to the ring (14) A concrete sleeper for a solid lorry.
10. The solid road type concrete sleeper according to claim 9, wherein the step (17) is round.
The concrete sleeper according to claim 9 or 10, wherein a half or less of the radial width of the ring (14) is placed against the step (17) of the concrete sleeper (1).
Wherein the upper layer or the support layer is embedded in a top layer or a support layer and has an interval (19) for an anchor block (12) filled with a casting compound (21) By car (23).
13. The solid lane according to claim 12, wherein the top layer and the support layer are made of asphalt or the support layer is made of concrete.
14. A solid lane according to claim 12 or 13, characterized in that said concrete sleepers comprise rail fastening with means for longitudinal and lateral compensation and / or a rigid intermediate layer of ethylene vinyl acetate.

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