EP2886716A1 - Device for the construction of an edge strip of a roadway, method for the construction of such an edge strip, edge strip made of poured asphalt and method for constructing a roadway - Google Patents

Abstract

The invention relates to a forming device (8) with a rotary body (9) for producing a marginal strip of a roadway construction. It is provided that the rotary body (9) has a first and a second frusto-conical portion (9.1, 9.2) whose ends are arranged facing away from each other with the respective smaller diameter. Furthermore, the invention relates to a method for producing an edge strip of a roadway construction, an edge strip of a roadway construction formed from mastic asphalt and a method for producing a roadway construction.

Description

The invention relates to a forming device with a rotary body for producing a marginal strip of a roadway construction, a method for producing a marginal strip of a roadway construction, an edge strip of a roadway construction formed from mastic asphalt and a method for producing a roadway construction.

From the state of the art machine and hand-guided rollers for forming floors, substrates, road constructions, dams and the like are more known.

The invention is based on the object to provide a comparison with the prior art improved forming device, an improved method for producing a trim strip, an improved, formed from mastic asphalt edge strip of a roadway construction as well as an improved method for producing a roadway construction.

The object is achieved according to the invention with respect to the forming device by the combination of features according to claim 1, with regard to the method for producing a marginal strip by the feature combination according to claim 10, with respect to the edge strip formed from mastic asphalt by the combination of features according to claim 12 and with respect to the method for producing a roadway structure by the Feature combination solved according to claim 13.

Advantageous embodiments of the invention are the subject of the dependent claims.

In a forming device with a rotary body for producing an edge strip of a roadway construction, in particular a bridge roadway construction, it is provided that the rotary body has a first and a second frusto-conical portion whose ends are arranged facing away from each other with the respective smaller diameter. The diameter of the rotating body thus increases in each case starting from the ends with the smaller diameters to the center towards.

By means of the rotational body formed in this way, a channel with a trough sole can be formed in an advantageous, approximately central channel region during production of the edge strip. Preferably, therefore, a water supply for the roadway construction for the discharge of surface water in a very simple and cost-effective manner can be realized. The very easy to produce with the inventive forming edge strip with gutter with a gutter in the middle channel region is particularly advantageous over the known edge strips, as a water removal only in the region of the edge strip and not as usual in the art directly above a gap between edge strip and road surface takes place, which could become waterlogged over time. It has been found that the joint between a road surface and an edge strip, which was produced with the device according to the invention, is particularly durable.

In a preferred embodiment, the first frusto-conical section is larger than the second frusto-conical section. Ie. a generatrix of the first frusto-conical portion is longer than a generatrix of the second frusto-conical portion. A generatrix of the first frustoconical section has a length of between 25 cm and 35 cm, preferably 30 cm, or between 16 cm and 20 cm, preferably 18 cm. A generatrix of the second frustoconical portion has a Length between 15 cm and 25 cm, preferably 20 cm, or a length between 8 cm and 15 cm, preferably 12 cm, on.

In another preferred embodiment, an angle between the generatrix and a cone axis of the first frusto-conical portion is smaller than an angle between the generatrix and a cone axis of the second frusto-conical portion. Thus, a diameter at the lower diameter end of the first frustoconical portion is z. B. 1 cm smaller than the maximum diameter of the rotating body and a diameter at the end with the smaller diameter of the second frusto-conical portion z. B. 2 cm smaller than the maximum diameter of the rotating body. The diameters at the ends with the larger diameters of the frusto-conical portions correspond to each other and together form the maximum diameter of the rotating body.

In a preferred embodiment, a one-armed guide device is provided with a guide profile and with an axis on which the rotational body is mounted. Dh the guide device is mechanically coupled only on one side with the rotational body, wherein by means of the guide device, the forming device is both manually and mechanically feasible.

Preferably, a first fastening element for fastening a weight element is arranged on the guide profile, whereby a correspondingly necessary weight force in the edge strip to be produced can be introduced. For example, thus a weight element with a weight of about 20 kg can be fastened. In addition, a second fastening element for optimum mechanical fastening of the weight element can be arranged on the guide profile. Particularly preferably, the weight element is releasably connected to the fastening element, so that the weight element in a simple manner And way is exchangeable, whereby the conversion device is variable in weight.

In a further preferred embodiment, the rotary body consists of a heat-resistant hollow steel and is mounted on the axle by means of a number of heat-resistant bearings, in particular ball bearings. For a mechanically particularly stable construction and function of the rotating body is realized.

A method according to the invention for producing an edge strip of a roadway structure provides that a number of layers, in particular one or more layers, of mastic asphalt are processed by means of the deformation device, in which the forming device is processed in a number of alternating rolling operations, i. H. rolling the rotating body at least once, over the number of layers of mastic asphalt, so that a groove is formed in the longitudinal direction of the edge strip. Ie. It creates a marginal strip with each directed in the transverse direction gradient and opposite slope. By means of the slope and the counter-slope, a channel with a trough sole is formed in the approximately central channel region, so that an improved water removal is possible compared with the edge strips known from the prior art, the water only in the region of the edge strip and not as in the prior art is usually performed directly above the arranged between the edge strip and road surface joint. Thus, the joint can be protected against water ingress and a life of the joint can be advantageously increased.

Preferably, the forming device is guided in the longitudinal direction by a free end of the rotating body is slidably guided against a cap. This is particularly advantageous because a separate guide element in the longitudinal direction is not required, provided that the cap has a suitable side surface as usual.

In an inventive, formed of mastic asphalt edge strip of a roadway construction, a groove formed in the longitudinal direction of the edge strip is provided so that it each has a directed in the transverse direction gradient and opposite slope. The channel allows a comparison with the prior art improved water flow in the region of the edge strip, wherein an arranged between edge strip and road surface joint is protected from water ingress.

An inventive method for producing a roadway construction provides that an edge strip produced according to the invention is used as a gauge for guiding a screed, by means of which a cover layer of a road surface is pulled off. The edge strip can thus be used in a particularly advantageous manner as a reference surface for the production of the top layer of the road surface.

Embodiments of the invention are explained in more detail below with reference to drawings.

Figur 1

schematisch eine Schnittdarstellung eines Ausschnitts aus einer Fahrbahnkonstruktion mit einem Randstreifen gemäß dem Stand der Technik,

Figur 2

schematisch eine Vorderansicht einer erfindungsgemäßen Umformungsvorrichtung zur Herstellung eines erfindungsgemäßen Randstreifens einer erfindungsgemäßen Fahrbahnkonstruktion, und

Figur 3

schematisch einen Ausschnitt einer erfindungsgemäßen Fahrbahnkonstruktion mit einem erfindungsgemäßen Randstreifen in Schnittdarstellung.

Show:

FIG. 1

1 is a schematic sectional view of a section of a roadway construction with a border strip according to the prior art;

FIG. 2

schematically a front view of a forming device according to the invention for producing an edge strip according to the invention of a roadway construction according to the invention, and

FIG. 3

schematically a section of a roadway construction according to the invention with an edge strip according to the invention in a sectional view.

Corresponding parts are provided in all figures with the same reference numerals.

The FIG. 1 shows a sectional view, in particular a cross section, of a section of a roadway structure 1 of the prior art.

The roadway construction 1 shown represents a bridge roadway construction and is formed of a multi-layer roadway covering 2, which is bounded on one side by a cap 3, wherein the roadway structure 1 in a sole 4, z. B. a trough or tunnel sole made of concrete, is arranged.

The road surface 2 comprises a two-layer structure comprising a protective layer 2.1 and a cover layer 2.2 and in this case has a thickness of, for example, 16 cm. Below the protective layer 2.1, a thin sealing layer 2.3 is arranged, for example, 2 cm thick and is made of bitumen welding tracks, with or without Metallkaschierung, and protects the sole 4 against the ingress of surface water, frost and de-icing salt.

The protective layer 2.1 is made of mastic asphalt and serves to protect the sealing layer 2.3 against mechanical stress from traffic and from the weather.

For direct removal of road loads, the cover layer 2.2 is provided, which is formed from mastic asphalt, stone mastic asphalt or asphalt concrete.

The road surface 2 forms a passable roadway with the cover layer 2.2 and is bounded in each case in the direction of the cap 3 by an edge strip 5 which forms a closure of the roadway. An edge strip 5 has a slope relative to the road surface, wherein at least one edge strip 5 of a water guide used to drain surface water. The edge strip 5 is formed of mastic asphalt and is applied in sections after application of the protective layer 2.1 to this up to a certain height. Subsequently, the edge strip 5 is rolled off by means of a roller.

Between the edge strip 5 and the cap 3, a spacer element 6 is arranged, which is filled with a potting compound. Furthermore, a gap 7 is arranged between the cover layer 2.2 of the road surface 2 and the edge strip 5, which is cut after application of the road surface 2 and then also sealed with a potting compound against the ingress of dirt and water. It may happen that the potting compound is washed out in the joint 7 by flowing over the joint 7 water, so that the joint 7 is water-leaking. The water is guided in the region of the edge strip 5 and the joint 7 in the longitudinal direction of the edge strip 5 to drain points. By washing out the potting compound in the joint 7, the roadway structure 1 can be permanently damaged.

To solve the problem, an in FIG. 3 shown, inventive edge strip 5 proposed, which is produced by means of a forming device 8 according to the invention. FIG. 2 shows the forming device 8 in a schematic front view.

The conversion device 8 comprises a rotary body 9 with a first frusto-conical portion 9.1 and a second frusto-conical portion 9.2, the ends of which are arranged facing away from each other with the respective smaller diameter. The diameter of the rotary body 9 thus increases in each case starting from the ends with the smaller diameters to the center towards. The forming device 8 is thus formed as a trough roll.

Here, in the present embodiment, the first frusto-conical portion 9.1 is larger than the second frusto-conical portion 9.2. Ie. a The generatrix of the first frusto-conical portion 9.1 is longer than a generatrix of the second frusto-conical portion 9.2. For example, the generatrix of the first frusto-conical portion 9.1 has a length of 30 cm or 18 cm and the generatrix of the second frusto-conical portion 9.2 has a length of 20 cm or 12 cm. Also, an angle between the generatrix and a cone axis of the first frusto-conical portion 9.1, for example, may be smaller than an angle between the generatrix and a cone axis of the second frusto-conical portion 9.2. For example, a diameter at the smaller diameter end of the first frustoconical portion 9.1 is, for example, 1 cm smaller than the maximum diameter of the rotary body 9 and a diameter at the smaller diameter end of the second frustoconical portion 9.2 is, for example, 2 cm smaller than the maximum diameter The diameter at the ends with the larger diameters of the frusto-conical sections 9.1, 9.2 correspond to each other and together form the maximum diameter of the rotating body. 9

A region of a maximum diameter of the rotary body 9 is thus not arranged in the middle of the rotary body 9, but offset thereto. Preferably, the rotary body 9 is formed of a heat-resistant hollow steel.

The rotary body 9 is further supported by two heat-resistant bearings 10 on an axis 11 which is mechanically coupled to a guide device 12 or formed integrally therewith. The heat-resistant bearings 10 are preferably designed as ball bearings.

The guide device 12 is provided as a one-armed guide device 12 with a guide profile 12.1. In the present exemplary embodiment, the guide profile 12.1 is connected to the bearing 10 coupled to the first frusto-conical section 9.1.

The guide profile 12.1 has in the present embodiment, a plurality of sections, which are each angled perpendicular to each other. A first portion faces the bearing 10 and is parallel to the axis 11. This first portion is significantly shorter than the following portions. A second section is angled at right angles to the first section and extends in a distance corresponding to a length of the first section to the rotation body 9 perpendicular to the axis 11. A third section is angled perpendicular to the second section and thus again runs parallel to the axis 11 at a corresponding distance to the rotation body 9. The third section is longer than the second section. Approximately in the height of the region of the maximum diameter of the rotary body 9 is followed by a fourth section, which is angled at right angles to the third section and thus extends perpendicular to the axis 11.

At a free end of the fourth section, a handle 12.2 for manual guidance of the forming device 8 is arranged, which is shown schematically simplified in the present embodiment. The handle 12.2 extends perpendicular to the fourth portion and thus parallel to the axis 11 in a corresponding distance from the high-rotation body 9. Alternatively, the handle 12.2 may be ergonomically shaped. In addition, the handle 12.2 can also be designed as a coupling element for coupling to a machine, whereby the conversion device 8 is also operated by machine. It is also possible to detachably connect the handle 12.2 with the guide profile 12.1 so that it can be exchanged for manual or mechanical guidance of the conversion device 8. Furthermore, this is in FIG. 2 shown guide profile 12.1 is not limited to the form described. For example, the guide device 12 may also be formed with two arms, wherein the described one-armed design of the guide device 12 is preferred.

On the guide profile 12.1 is in the region of the fourth section, a first fastening element 12.3 and in the region of the third section, a second fastening element 12.4 for non-positive and positive fastening of a Weight element 13 arranged. The weight element 13 has, for example, a weight of about 20 kg and serves to initiate a corresponding weight in the edge strip 5 to be produced. Preferably, the non-positive and positive connection between the weight element 13 and the fastening elements 12.3, 12.4 is detachably formed, so that the Weight element 13 is exchangeable in a simple manner. Thus, the conversion device 8 can be varied in weight and is thus used variably.

As already described, an inventive edge strip 5 of a roadway construction 1 according to the invention, in particular a bridge roadway construction, can be produced by means of the deformation device 8 formed in this way. The FIG. 3 shows a section of a roadway construction 1 according to the invention with the edge strip 5 according to the invention in a cross section.

The edge strip 5 has a width substantially corresponding to a width of the rotary body 9, ie in relation to the example according to FIG FIG. 2 , a width of 50 cm, on. In the region of the maximum diameter of the rotary body 9, the edge strip 5 has a groove with a groove bottom 14, which is formed corresponding to the maximum diameter of the rotary body 9. The edge strip 5 thus has a transversely directed slope and an approximately uniform counter-gradient, which is approximately 5%, for example, at a distance of 25 cm to the cap 3.

Preferably, a water supply for the roadway construction 1 for the discharge of surface water can thus be realized. The edge strip 5 is thus improved over the known edge strips 5, since a water removal takes place only in the region of the edge strip 5 and not common in the prior art directly above the joint 7 between the edge strip 5 and the road surface 2, so that the gap 7 before Water entry is protected.

For this purpose, the roadway structure 1 has an edge strip 5 according to the invention and an edge strip 5 according to the prior art.

To produce the thus formed edge strip 5 of the mastic asphalt is processed by means of the forming device 8 by the forming device 8 in a number of rolling operations, in particular in a number of alternating rolling operations, d. H. So at least once rolling back and forth of the rotating body 9, is moved over the mastic asphalt, so that in the longitudinal direction of the edge strip 5, the groove described above with the trough 14 is formed.

The forming device 8 is guided for this purpose in the longitudinal direction of the roadway structure 1, by a free end 9.3 of the rotating body 9 is slidably guided on the cap 3.

Preferably, the edge strip 5 produced in this way serves as a gauge for guiding a screed, by means of which the cover layer 2.2 of the road surface 2 is pulled off.

LIST OF REFERENCE NUMBERS

1

road construction

2

roadbed

2.1

protective layer

2.2

topcoat

2.3

sealing layer

3

cap

4

sole

5

edge strips

6

spacer

7

Gap

8th

forming device

9

body of revolution

9.1

first frustoconical section

9.2

second frustoconical section

9.3

free end

10

warehouse

11

axis

12

guiding device

12.1

guide profile

12.2

Handle

12.3

first fastening element

12.4

second fastening element

13

weight element

14

Rinnsohle

Claims (13)

Forming device (8) with a rotary body (9) for producing a marginal strip (5) of a roadway construction (1),
characterized in that the rotary body (9) has a first and a second frusto-conical portion (9.1, 9.2) whose ends are arranged facing away from each other with the respective smaller diameter. Forming device (8) according to claim 1,
characterized in that a one-armed guide device (12) with a guide profile (12.1) and with an axis (11) is provided, on which the rotary body (9) is mounted. Forming device (8) according to claim 1 or 2,
characterized in that on the guide profile (12.1) a first fastening element (12.3) for fixing a weight element (13) is arranged. Forming device (8) according to one of the preceding claims,
characterized in that the rotary body (9) consists of a heat-resistant hollow steel and is mounted on the axle (11) by means of a number of heat-resistant bearings (10). Forming device (8) according to one of the preceding claims,
characterized in that a surface line of the first frusto-conical portion (9.1) has a length between 25 cm and 35 cm and a generatrix of the second frusto-conical portion (9.2) has a length between 15 cm and 25 cm. Forming device (8) according to one of claims 1 to 4,
characterized in that a surface line of the first frusto-conical portion (9.1) has a length between 15 cm and 20 cm and a generatrix of the second frusto-conical portion (9.2) has a length between 10 cm and 15 cm. Forming device (8) according to claim 5 or 6,
characterized in that an angle between the generatrix and a cone axis of the first frusto-conical portion (9.1) is smaller than an angle between the generatrix and a cone axis of the second frusto-conical portion (9.2). Forming device (8) according to one of the preceding claims,
characterized in that a diameter at the smaller diameter end of the first frusto-conical portion is smaller than a maximum diameter of the rotary body (9) between 0.5 cm and 1.5 cm, with a diameter at the smaller diameter end of the rotary body second frusto-conical portion (9.2) is between 1 cm and 3 cm smaller than the maximum diameter of the rotary body (9). Forming device (8) according to claim 8,
characterized in that the ends with the respective larger diameter of the frusto-conical sections (9.1, 9.2) correspond in diameter to one another and form the maximum diameter of the rotary body (9). Method for producing a marginal strip (5) of a roadway construction (1),
characterized in that a number of layers of mastic asphalt are processed by means of a conversion device (8) according to one of claims 1 to 9, by the forming device (8) in a number alternating rolling operations over the number of layers of mastic asphalt is moved, so that in the longitudinal direction of the edge strip (5) a groove is formed. Method according to claim 10,
characterized in that the forming device (8) is guided in the longitudinal direction by a free end (9.3) of the rotary body (9) is slidably guided on a cap (3) fitting. Edge strip (5) of a roadway construction (1) formed from mastic asphalt, characterized by a channel formed in the longitudinal direction of the edge strip (5) according to a method according to claim 10 or 11. Method for producing a roadway construction (1),
characterized in that an edge strip (5) produced by means of a method according to any one of claims 10 or 11 is used as a teaching for guiding a screed, by means of which a cover layer (2.2) of a road surface (2) of a roadway construction (1) is withdrawn.

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