CA2926697C - Reinforcing steel bar mat, method for the production thereof and method for the laying thereof - Google Patents
Reinforcing steel bar mat, method for the production thereof and method for the laying thereof Download PDFInfo
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- CA2926697C CA2926697C CA2926697A CA2926697A CA2926697C CA 2926697 C CA2926697 C CA 2926697C CA 2926697 A CA2926697 A CA 2926697A CA 2926697 A CA2926697 A CA 2926697A CA 2926697 C CA2926697 C CA 2926697C
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- reinforcing steel
- steel bar
- handling unit
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/04—Mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
- B21F27/20—Making special types or portions of network by methods or means specially adapted therefor of plaster-carrying network
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- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention relates to a reinforcing steel bar mat, to a method for the production thereof and to a method for the laying thereof, in particular the pooling thereof.
Description
I
Reinforcing steel bar mat, method for the production thereof and method for the laying thereof The present invention relates to a single-axis reinforcing mat and to a method for the production thereof.
Reinforcements in reinforced concrete construction are often in the form of reinforcement mats which comprise reinforcing steel bars. Reinforcement mats of this type have either a single axis or two axes, i.e. have a static effect in one or in two spatial directions. Single-axis reinforcement mats consist of reinforcing steel bars, which are welded onto statically non-bearing carrying straps, they are rolled up during the production thereof and are therefore also referred to as roll mats. Two single-axis reinforcing steel bar mat layers are rolled out directly one on top of the other per reinforcement layer, the second layer being orthogonal to the first. The roll mats are loaded and transported to the construction site as rolls. There, they are unloaded from the lorry using a crane, stored in a suitable location, and lifted onto the resulting shell construction by the crane at the appropriate time, where they are rolled out by two or more workers. Machines for producing rolled-up single-axis reinforcing steel bar mats of this type, which also comprise reinforcing steel bars having individually different lengths or thicknesses within one mat, are described in the European patent applications EP 0 667 343 Al, EP 0 862 958 Al, EP 0 919 309 Al and EP 2 Al by the applicant.
Each concrete slab of the resulting structure comprises two reinforcement layers at a distance from one another, one reinforcement layer composed of the described single-axis reinforcing steel bar mats consisting of a plurality of rolled-out partial mats according to the local conditions of the structure to be erected. These must be placed in the resulting structure in the correct sequence according to a previously created layout plan and rolled out in the correct direction. It is not unusual to unroll 15, 20 or more partial mats per reinforcement layer. For loading onto a lorry, unloading and placement in the resulting building, a lot of crane time is required. At the same time, a correspondingly large storage space on the construction site is required. The great logistical effort required is a disadvantage of this prior art.
Reinforcing steel bar mat, method for the production thereof and method for the laying thereof The present invention relates to a single-axis reinforcing mat and to a method for the production thereof.
Reinforcements in reinforced concrete construction are often in the form of reinforcement mats which comprise reinforcing steel bars. Reinforcement mats of this type have either a single axis or two axes, i.e. have a static effect in one or in two spatial directions. Single-axis reinforcement mats consist of reinforcing steel bars, which are welded onto statically non-bearing carrying straps, they are rolled up during the production thereof and are therefore also referred to as roll mats. Two single-axis reinforcing steel bar mat layers are rolled out directly one on top of the other per reinforcement layer, the second layer being orthogonal to the first. The roll mats are loaded and transported to the construction site as rolls. There, they are unloaded from the lorry using a crane, stored in a suitable location, and lifted onto the resulting shell construction by the crane at the appropriate time, where they are rolled out by two or more workers. Machines for producing rolled-up single-axis reinforcing steel bar mats of this type, which also comprise reinforcing steel bars having individually different lengths or thicknesses within one mat, are described in the European patent applications EP 0 667 343 Al, EP 0 862 958 Al, EP 0 919 309 Al and EP 2 Al by the applicant.
Each concrete slab of the resulting structure comprises two reinforcement layers at a distance from one another, one reinforcement layer composed of the described single-axis reinforcing steel bar mats consisting of a plurality of rolled-out partial mats according to the local conditions of the structure to be erected. These must be placed in the resulting structure in the correct sequence according to a previously created layout plan and rolled out in the correct direction. It is not unusual to unroll 15, 20 or more partial mats per reinforcement layer. For loading onto a lorry, unloading and placement in the resulting building, a lot of crane time is required. At the same time, a correspondingly large storage space on the construction site is required. The great logistical effort required is a disadvantage of this prior art.
2 The invention therefore addresses the problem of providing a rollable single-axis reinforcing steel bar mat which is logistically easier to handle.
To address this problem, the present invention provides a plurality of single-axis reinforcing steel bar mats, each comprising reinforcing steel bars attached to carrying straps, which are interconnected in a laying sequence to form a handling unit.
More particularly, in one aspect, the present invention provides a handling unit comprising a plurality of rollable, single-axis reinforcing steel bar mats which are interconnected in a laying sequence, wherein each reinforcing steel bar mat comprises reinforcing steel bars which are attached to carrying straps, and a visual indicator of the end of the mat provided between the individual reinforcing steel bar mats of the handling unit, wherein the indicator comprises: a reinforcing steel bar spacing of 30 cm or more, a colour marking on the carrying straps, a colour marking on one carrying strap, or a coupling piece between the carrying straps.
In another aspect, the present invention provides a method for producing a handling unit as defined herein, wherein a mat former, after a first reinforcing steel bar mat has been produced, continuously manufactures at least one additional reinforcing steel bar mat, and wherein a region without reinforcing steel bars is produced between the two reinforcing steel bar mats.
In another aspect, the present invention provides a laying method for a handling unit as defined herein, wherein: a) a handling unit is brought into a building to be erected;
b) the first reinforcing steel bar mat of the handling unit is unrolled and, when the end of the mat is reached, this being visible on account of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated; c) the next reinforcing steel bar mat is unrolled and, when the end of the mat is reached, this being visible on the basis of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated; and d) step c) is repeated until the handling unit has been completely unrolled.
2a Very advantageously, the invention proposes interconnecting a plurality of reinforcing steel bar mats to form a transportable unit, but in this case preserving the laying sequence of the individual mats. Accordingly, the first reinforcing steel bar mat to be unrolled in the production process is the last reinforcing steel bar mat to be produced, and is therefore located on the outside of the rolled-up handling unit. Then, the second reinforcement mat to be unrolled follows towards the inside, then the third and so on. The individual reinforcing steel bar mats are advantageously interconnected by the respective carrying straps so that each of the carrying straps passes through the entire handling unit. The reinforcing steel bars of the individual reinforcing steel bar mats are then welded onto the continuous carrying straps. Very advantageously, the handling of the individual reinforcing steel bar mats is thus simplified: now only a bundle of interconnected reinforcing steel bar mats has to be moved, i.e. loaded, unloaded, stored at the construction site and placed in the resulting structure. This reduces the required bearing surface by up to 50 (Yo, the loading and unloading times by up to 50 %, and the required crane time by at least 25 %. The crane only has to lift the handling unit into the resulting structure and, once there, transport it from one laying location to the next, and therefore there is no longer any need for long swivelling paths. In this case, the original unrolling layout can advantageously be maintained. A
plurality of light reinforcing steel bar mats can advantageously be assembled to form a single, heavier mat, which makes good use of the loading capacity of a lorry.
Since the laying sequence is not changed during the assembly ("pooling") of the reinforcing steel bar mats into a single handling unit, no problems result for the processors on the construction site. It can follow the usual predefined unrolling pattern.
In one embodiment of the invention, it is provided that the interconnected reinforcing steel bar mats are interconnected in descending order of mat width. Accordingly, the widest mat to be unrolled is located on the outside of the handling unit, the narrower reinforcing steel
To address this problem, the present invention provides a plurality of single-axis reinforcing steel bar mats, each comprising reinforcing steel bars attached to carrying straps, which are interconnected in a laying sequence to form a handling unit.
More particularly, in one aspect, the present invention provides a handling unit comprising a plurality of rollable, single-axis reinforcing steel bar mats which are interconnected in a laying sequence, wherein each reinforcing steel bar mat comprises reinforcing steel bars which are attached to carrying straps, and a visual indicator of the end of the mat provided between the individual reinforcing steel bar mats of the handling unit, wherein the indicator comprises: a reinforcing steel bar spacing of 30 cm or more, a colour marking on the carrying straps, a colour marking on one carrying strap, or a coupling piece between the carrying straps.
In another aspect, the present invention provides a method for producing a handling unit as defined herein, wherein a mat former, after a first reinforcing steel bar mat has been produced, continuously manufactures at least one additional reinforcing steel bar mat, and wherein a region without reinforcing steel bars is produced between the two reinforcing steel bar mats.
In another aspect, the present invention provides a laying method for a handling unit as defined herein, wherein: a) a handling unit is brought into a building to be erected;
b) the first reinforcing steel bar mat of the handling unit is unrolled and, when the end of the mat is reached, this being visible on account of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated; c) the next reinforcing steel bar mat is unrolled and, when the end of the mat is reached, this being visible on the basis of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated; and d) step c) is repeated until the handling unit has been completely unrolled.
2a Very advantageously, the invention proposes interconnecting a plurality of reinforcing steel bar mats to form a transportable unit, but in this case preserving the laying sequence of the individual mats. Accordingly, the first reinforcing steel bar mat to be unrolled in the production process is the last reinforcing steel bar mat to be produced, and is therefore located on the outside of the rolled-up handling unit. Then, the second reinforcement mat to be unrolled follows towards the inside, then the third and so on. The individual reinforcing steel bar mats are advantageously interconnected by the respective carrying straps so that each of the carrying straps passes through the entire handling unit. The reinforcing steel bars of the individual reinforcing steel bar mats are then welded onto the continuous carrying straps. Very advantageously, the handling of the individual reinforcing steel bar mats is thus simplified: now only a bundle of interconnected reinforcing steel bar mats has to be moved, i.e. loaded, unloaded, stored at the construction site and placed in the resulting structure. This reduces the required bearing surface by up to 50 (Yo, the loading and unloading times by up to 50 %, and the required crane time by at least 25 %. The crane only has to lift the handling unit into the resulting structure and, once there, transport it from one laying location to the next, and therefore there is no longer any need for long swivelling paths. In this case, the original unrolling layout can advantageously be maintained. A
plurality of light reinforcing steel bar mats can advantageously be assembled to form a single, heavier mat, which makes good use of the loading capacity of a lorry.
Since the laying sequence is not changed during the assembly ("pooling") of the reinforcing steel bar mats into a single handling unit, no problems result for the processors on the construction site. It can follow the usual predefined unrolling pattern.
In one embodiment of the invention, it is provided that the interconnected reinforcing steel bar mats are interconnected in descending order of mat width. Accordingly, the widest mat to be unrolled is located on the outside of the handling unit, the narrower reinforcing steel
3 bar mats are rolled up inside the handling unit and follow the first in the unrolling sequence.
This results in a particularly advantageous centre of gravity for the handling unit.
In one embodiment of the invention, it is provided that the interconnected reinforcing steel bar mats of a handling unit are arranged symmetrically about the longitudinal axis of the handling unit This also leads to a particularly advantageous centre of gravity. A crane driver would not be surprised by eccentric centres of gravity which cannot be seen from the outside of a rolled-up handling unit.
According to the invention, it is further provided that a visual indicator of the end of the mat, in particular in the form of a reinforcing steel bar spacing of 30 cm or more, is provided between the individual reinforcing steel bar mats of a handling unit. In order to mark each end and each start of the interconnected reinforcing steel bar mats, an indicator is provided according to the invention. This may consist for example of a colour marking on the carrying straps or on one carrying strap. However, a reinforcing steel bar spacing of 30 cm or more is preferred. Since such a large reinforcing steel bar spacing is not permissible according to the relevant DIN standards, an operator on the construction site would notice such a spacing immediately. Said operator would recognise from the oversized reinforcing steel bar spacing that one reinforcing steel bar mat was ending and the next was starting. He can therefore readily cut through the thin carrying straps using a simple pair of tin-snips and then either immediately unroll the next reinforcing steel bar mat or, as will be described further below, place the rest of the handling unit in another location in the resulting reinforcement layer.
As a result of the fact that the first reinforcing steel bars of a reinforcing steel bar mat which is first when viewed in the unrolling direction, and/or the last reinforcing steel bars of a reinforcing steel bar mat which is also last when viewed in the unrolling direction of the handling unit comprise shorter, in particular eccentrically arranged, reinforcing steel bars, advantageously supports, entrances or the like can be avoided without any problems at the start and at the end of the unrolling process.
In one embodiment of the invention, it is provided that a plurality of handling units are interconnected in a laying sequence to form a complete handling unit. This development of
This results in a particularly advantageous centre of gravity for the handling unit.
In one embodiment of the invention, it is provided that the interconnected reinforcing steel bar mats of a handling unit are arranged symmetrically about the longitudinal axis of the handling unit This also leads to a particularly advantageous centre of gravity. A crane driver would not be surprised by eccentric centres of gravity which cannot be seen from the outside of a rolled-up handling unit.
According to the invention, it is further provided that a visual indicator of the end of the mat, in particular in the form of a reinforcing steel bar spacing of 30 cm or more, is provided between the individual reinforcing steel bar mats of a handling unit. In order to mark each end and each start of the interconnected reinforcing steel bar mats, an indicator is provided according to the invention. This may consist for example of a colour marking on the carrying straps or on one carrying strap. However, a reinforcing steel bar spacing of 30 cm or more is preferred. Since such a large reinforcing steel bar spacing is not permissible according to the relevant DIN standards, an operator on the construction site would notice such a spacing immediately. Said operator would recognise from the oversized reinforcing steel bar spacing that one reinforcing steel bar mat was ending and the next was starting. He can therefore readily cut through the thin carrying straps using a simple pair of tin-snips and then either immediately unroll the next reinforcing steel bar mat or, as will be described further below, place the rest of the handling unit in another location in the resulting reinforcement layer.
As a result of the fact that the first reinforcing steel bars of a reinforcing steel bar mat which is first when viewed in the unrolling direction, and/or the last reinforcing steel bars of a reinforcing steel bar mat which is also last when viewed in the unrolling direction of the handling unit comprise shorter, in particular eccentrically arranged, reinforcing steel bars, advantageously supports, entrances or the like can be avoided without any problems at the start and at the end of the unrolling process.
In one embodiment of the invention, it is provided that a plurality of handling units are interconnected in a laying sequence to form a complete handling unit. This development of
4 the inventive concept of pooling individual reinforcing steel bar mats has the advantage of making the handling units even bigger, if this is desirable for transportation purposes. This is the case in particular when many smaller reinforcing steel bar mats form part of one reinforcement layer.
The invention also includes a method for producing a handling unit according to what has been described previously, in which a mat former, after a first reinforcing steel bar mat has been produced, continuously produces at least one additional reinforcing steel bar mat, a region without reinforcing steel bars being produced between the two reinforcing steel bar mats. In other words, the mat former continuously produces reinforcing steel bar mats which are not separated from one another. The conventional cutting through of the carrying straps is no longer required during the individual production of the mats.
Lastly, the invention also includes a laying method of a handling unit, as has been described previously. In this laying method, a handling unit is placed in a structure to be created, the first reinforcing steel bar mat of which is unrolled and, when the end of the mat is reached, the connection to the following reinforcing steel bar mat is cut through, the next reinforcing steel bar mat is rolled out and, when the end of the mat is reached, the connection to the now following reinforcing steel bar mat is separated, the previously mentioned steps are repeated until the handling unit is rolled out and thus dismantled.
In one embodiment of this method, it is provided that the rest of the handling unit which remains after unrolling one or more reinforcing steel bar mats is placed at a second laying location inside the structure to be created by means of a crane. This means that a handling unit may also contain a plurality of reinforcing steel bar mats which are not to be laid immediately one after the other spatially. Merely the temporal sequence of the unrolling is to be maintained, not necessarily the local sequence.
The invention is described in a preferred embodiment by way of example with reference to drawings in which further advantageous details can be found in the figures.
Functionally like parts are provided with the same reference numerals.
The invention also includes a method for producing a handling unit according to what has been described previously, in which a mat former, after a first reinforcing steel bar mat has been produced, continuously produces at least one additional reinforcing steel bar mat, a region without reinforcing steel bars being produced between the two reinforcing steel bar mats. In other words, the mat former continuously produces reinforcing steel bar mats which are not separated from one another. The conventional cutting through of the carrying straps is no longer required during the individual production of the mats.
Lastly, the invention also includes a laying method of a handling unit, as has been described previously. In this laying method, a handling unit is placed in a structure to be created, the first reinforcing steel bar mat of which is unrolled and, when the end of the mat is reached, the connection to the following reinforcing steel bar mat is cut through, the next reinforcing steel bar mat is rolled out and, when the end of the mat is reached, the connection to the now following reinforcing steel bar mat is separated, the previously mentioned steps are repeated until the handling unit is rolled out and thus dismantled.
In one embodiment of this method, it is provided that the rest of the handling unit which remains after unrolling one or more reinforcing steel bar mats is placed at a second laying location inside the structure to be created by means of a crane. This means that a handling unit may also contain a plurality of reinforcing steel bar mats which are not to be laid immediately one after the other spatially. Merely the temporal sequence of the unrolling is to be maintained, not necessarily the local sequence.
The invention is described in a preferred embodiment by way of example with reference to drawings in which further advantageous details can be found in the figures.
Functionally like parts are provided with the same reference numerals.
5 The figures of the drawings show in each case unrolled partial views of embodiments of a handling unit.
Fig. 1: a first embodiment, Fig. 2: a second embodiment, Fig. 3: a third embodiment, and Fig. 4: a fourth embodiment.
Fig. 1 is a partial view of the simplest form of an unrolled handling unit 1 comprising the first three of a plurality of reinforcing steel bar mats 2. The carrying straps 3 and the individual reinforcing steel bar mats 4 can easily be seen. The indicator 5 can also easily be seen, in this case being a region without reinforcing steel bars 2 which is approximately 30 cm big.
According to the invention, greater spacings than 30 cm would also be possible, but the spacing must not be clearly less than this value, in order to safely mark the end of the mat.
Likewise, the individual mats 2 separated by regions 5 can easily be seen. The handling unit 1 shown in Fig. 1 comprises reinforcing steel bar mats 2 which have a uniform reinforcing steel bar length and mat length. The unrolling direction 8 is indicated by an arrow, the remaining, still rolled-up part of the handling unit 1 is not shown, but it is joined below the indicated fourth mat 2. The length of the reinforcing steel bars 2 here defines the overall width of the handling unit 1. According to the invention, the bars 2 could also consist of a material other than reinforcing steel, for example steel bars having a smooth surface.
They could also vary in terms of diameter from mat to mat or within one mat, and also in terms of bar length and edge orientation. Variation in edge orientation means that not all the bars have to start flush on one side. The invention can be applied to all rollable mats. By means of the invention shown, for example 4-6 partial mats of a reinforcement layer can be assembled and thus easily transported. According to the invention, it would also be possible to provide no continuous carrying straps during the production process, but rather to detachably fasten said straps to one another for example using a coupling piece. After the corresponding mat has been unrolled, the coupling piece would then be detached so that the second mat is released. Lastly, it would also be conceivable to loosely roll up the individual mats to form a handling unit, i.e. comprising separated carrying straps, and to provide a different type of transport securing means, wherein it is to be assumed that the =
Fig. 1: a first embodiment, Fig. 2: a second embodiment, Fig. 3: a third embodiment, and Fig. 4: a fourth embodiment.
Fig. 1 is a partial view of the simplest form of an unrolled handling unit 1 comprising the first three of a plurality of reinforcing steel bar mats 2. The carrying straps 3 and the individual reinforcing steel bar mats 4 can easily be seen. The indicator 5 can also easily be seen, in this case being a region without reinforcing steel bars 2 which is approximately 30 cm big.
According to the invention, greater spacings than 30 cm would also be possible, but the spacing must not be clearly less than this value, in order to safely mark the end of the mat.
Likewise, the individual mats 2 separated by regions 5 can easily be seen. The handling unit 1 shown in Fig. 1 comprises reinforcing steel bar mats 2 which have a uniform reinforcing steel bar length and mat length. The unrolling direction 8 is indicated by an arrow, the remaining, still rolled-up part of the handling unit 1 is not shown, but it is joined below the indicated fourth mat 2. The length of the reinforcing steel bars 2 here defines the overall width of the handling unit 1. According to the invention, the bars 2 could also consist of a material other than reinforcing steel, for example steel bars having a smooth surface.
They could also vary in terms of diameter from mat to mat or within one mat, and also in terms of bar length and edge orientation. Variation in edge orientation means that not all the bars have to start flush on one side. The invention can be applied to all rollable mats. By means of the invention shown, for example 4-6 partial mats of a reinforcement layer can be assembled and thus easily transported. According to the invention, it would also be possible to provide no continuous carrying straps during the production process, but rather to detachably fasten said straps to one another for example using a coupling piece. After the corresponding mat has been unrolled, the coupling piece would then be detached so that the second mat is released. Lastly, it would also be conceivable to loosely roll up the individual mats to form a handling unit, i.e. comprising separated carrying straps, and to provide a different type of transport securing means, wherein it is to be assumed that the =
6 inner layers of the handling unit are held by the pressure of the outer layers at least during transportation. This would result in a particularly simple handling unit.
Fig. 2 shows an unrolled handling unit in which the successive reinforcing steel bar mats 2 are assembled in descending order of width, wherein the decrease does not have to be large. At the same time, in this embodiment, all of the mats 2 are arranged symmetrically about the longitudinal axis 6.
Fig. 3 shows a handling unit 1 in which two smaller mats 2, which have to be rolled out side-by-side, since they are intended to receive a concrete pillar therebetween, are arranged side-by-side. It is likewise shown that the first two reinforcing steel bars 4 of a first reinforcing steel bar mat 2 to be unrolled turn out shorter than the following bars of the same mat. This advantageously makes it possible to avoid a pillar or the like in that the still rolled-up handling unit 1 is put down by the crane at a slight distance from the edge of the reinforcement layer, opened, and the topmost centimetres of the mat towards the edge are rolled out, as is shown at the side of Fig. 3. The rest of the mat is then rolled out in the opposite direction.
Fig. 4 lastly shows a complete handling unit 7 composed of two handling units 1, wherein the inner handling unit 1 which is to be laid second is shown as a dashed line, and wherein for the sake of clarity, in each case only the topmost layer of the rolled-up reinforcing steel bar mats 2 of a handling unit are shown.
When assembling the individual mats 2 to form a handling unit 1, the maximum weight of the handling unit must be adhered to, which is restricted less by the loading capacity of a lorry or the bearing capacity of a crane than by the bearing capacity of the spacers for the specific reinforcement layer. Conventionally, such spacers cannot withstand burdens greater than 100 kg/m. Therefore, when rolled up, the complete handling unit must not exceed this amount, unless spacers having correspondingly large dimensions are provided on the construction site.
By means of assembling individual reinforcing steel bar mats to form a common handling unit according to the invention, production is very advantageously simplified, the required
Fig. 2 shows an unrolled handling unit in which the successive reinforcing steel bar mats 2 are assembled in descending order of width, wherein the decrease does not have to be large. At the same time, in this embodiment, all of the mats 2 are arranged symmetrically about the longitudinal axis 6.
Fig. 3 shows a handling unit 1 in which two smaller mats 2, which have to be rolled out side-by-side, since they are intended to receive a concrete pillar therebetween, are arranged side-by-side. It is likewise shown that the first two reinforcing steel bars 4 of a first reinforcing steel bar mat 2 to be unrolled turn out shorter than the following bars of the same mat. This advantageously makes it possible to avoid a pillar or the like in that the still rolled-up handling unit 1 is put down by the crane at a slight distance from the edge of the reinforcement layer, opened, and the topmost centimetres of the mat towards the edge are rolled out, as is shown at the side of Fig. 3. The rest of the mat is then rolled out in the opposite direction.
Fig. 4 lastly shows a complete handling unit 7 composed of two handling units 1, wherein the inner handling unit 1 which is to be laid second is shown as a dashed line, and wherein for the sake of clarity, in each case only the topmost layer of the rolled-up reinforcing steel bar mats 2 of a handling unit are shown.
When assembling the individual mats 2 to form a handling unit 1, the maximum weight of the handling unit must be adhered to, which is restricted less by the loading capacity of a lorry or the bearing capacity of a crane than by the bearing capacity of the spacers for the specific reinforcement layer. Conventionally, such spacers cannot withstand burdens greater than 100 kg/m. Therefore, when rolled up, the complete handling unit must not exceed this amount, unless spacers having correspondingly large dimensions are provided on the construction site.
By means of assembling individual reinforcing steel bar mats to form a common handling unit according to the invention, production is very advantageously simplified, the required
7 bearing surface is considerably reduced, the loading/unloading time is greatly decreased and the required crane time is considerably reduced. This invention therefore very advantageously complements the very fast output of roll mats to form an economically very cost-effective overall system with respect to laying times and labour costs.
List of reference numerals 1 handling unit 2 reinforcing steel bar mat 3 carrying strap 4 reinforcing steel bar mat width 6 longitudinal axis 7 complete handling unit
List of reference numerals 1 handling unit 2 reinforcing steel bar mat 3 carrying strap 4 reinforcing steel bar mat width 6 longitudinal axis 7 complete handling unit
8 unrolling direction
Claims (9)
1. A handling unit comprising a plurality of rollable, single-axis reinforcing steel bar mats which are interconnected in a laying sequence, wherein each reinforcing steel bar mat comprises reinforcing steel bars which are attached to carrying straps, and a visual indicator of the end of the mat provided between the individual reinforcing steel bar mats of the handling unit, wherein the indicator comprises: a reinforcing steel bar spacing of 30 cm or more, a colour marking on the carrying straps, a colour marking on one carrying strap, or a coupling piece between the carrying straps.
2. The handling unit according to claim 1, wherein the plurality of interconnected reinforcing steel bar mats are interconnected in descending order of mat width.
3. The handling unit according to claim 1 or 2 wherein the plurality of interconnected reinforcing steel bar mats of a handling unit are arranged symmetrically about the longitudinal axis of the handling unit.
4. The handling unit according to any one of claims 1 to 3, wherein the first reinforcing steel bars of a reinforcing steel bar mat, which is first when viewed in an unrolling direction of the handling unit, and/or the last reinforcing steel bars of a reinforcing steel bar mat which is also last when viewed in the unrolling direction comprise shorter reinforcing steel bars.
5. The handling unit according to claim 4, wherein the shorter reinforcing steel bars are arranged off-centre with respect to the longitudinal axis of the handling unit.
6. The handling unit according to any one of claims 1 to 5, which is part of a handling unit assembly comprising a plurality of handling units connected to one another in a laying order.
7. A method for producing a handling unit as defined in any one of claims 1 to 5, wherein a mat former, after a first reinforcing steel bar mat has been produced, continuously manufactures at least one additional reinforcing steel bar mat, and wherein a region without reinforcing steel bars is produced between the two reinforcing steel bar mats.
8. A laying method for a handling unit as defined in any one of claims 1 to 6, wherein:
a) a handling unit is brought into a building to be erected;
b) the first reinforcing steel bar mat of the handling unit is unrolled and, when the end of the mat is reached, this being visible on account of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated;
c) the next reinforcing steel bar mat is unrolled and, when the end of the mat is reached, this being visible on the basis of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated;
and d) step c) is repeated until the handling unit has been completely unrolled.
a) a handling unit is brought into a building to be erected;
b) the first reinforcing steel bar mat of the handling unit is unrolled and, when the end of the mat is reached, this being visible on account of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated;
c) the next reinforcing steel bar mat is unrolled and, when the end of the mat is reached, this being visible on the basis of the visual indicator of the end of the mat, the connection to the following reinforcing steel bar mat is separated;
and d) step c) is repeated until the handling unit has been completely unrolled.
9. The laying method according to claim 8, wherein after step b) and/or step c), the remaining handling unit is brought to a second laying location within the building to be erected.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013111064.9 | 2013-10-07 | ||
| DE102013111064.9A DE102013111064A1 (en) | 2013-10-07 | 2013-10-07 | Reinforcing steel bar mat, method for its production and method for its laying |
| PCT/EP2014/070095 WO2015051987A1 (en) | 2013-10-07 | 2014-09-22 | Reinforcing steel bar mat, method for producing same and method for laying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2926697A1 CA2926697A1 (en) | 2015-04-16 |
| CA2926697C true CA2926697C (en) | 2019-08-27 |
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ID=51627265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2926697A Active CA2926697C (en) | 2013-10-07 | 2014-09-22 | Reinforcing steel bar mat, method for the production thereof and method for the laying thereof |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP3055466B1 (en) |
| AU (1) | AU2014334048B2 (en) |
| CA (1) | CA2926697C (en) |
| DE (1) | DE102013111064A1 (en) |
| DK (1) | DK3055466T3 (en) |
| ES (1) | ES2643370T3 (en) |
| HU (1) | HUE037078T2 (en) |
| PL (1) | PL3055466T3 (en) |
| WO (1) | WO2015051987A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019125300A1 (en) * | 2019-09-19 | 2021-03-25 | Häussler Innovation GmbH | Method for the reinforcement of a reinforced concrete component |
| DE102021117313A1 (en) | 2021-07-05 | 2023-01-05 | Bam Ag | Transport and roll-up aid for uniaxial reinforcing steel bar mats |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA766870A (en) * | 1967-09-12 | Barron Maurice | Welded fabric for reinforced concrete and method of making reinforced concrete | |
| US1709441A (en) * | 1923-07-18 | 1929-04-16 | Rogow Sydney | Concrete bar |
| DE2606349A1 (en) * | 1976-02-18 | 1977-08-25 | Hans Keller | Unrollable steel mesh for solid reinforced concrete slab - with bars in elastically flexible troughs in steel or plastic strips |
| FR2650614B1 (en) * | 1989-08-01 | 1991-10-25 | Rech Etudes Tech | REINFORCEMENT ASSEMBLY FOR REINFORCED CONCRETE PRODUCTS, METHOD AND INSTALLATION FOR THE PRODUCTION THEREOF |
| GB9400889D0 (en) | 1994-01-18 | 1994-03-16 | Sandoz Ltd | Novel compounds |
| DE4436610A1 (en) * | 1994-04-13 | 1995-10-19 | Haeussler Wilhelm Dipl Ing Dip | Process for the production of reinforcement for reinforced concrete surface structures and machine for the production of reinforcement mesh |
| DE9412405U1 (en) * | 1994-04-13 | 1995-08-10 | Haeussler Wilhelm Dipl Ing Dip | Reinforcement mat for reinforced concrete surface structures and machine for their production |
| DE29704134U1 (en) | 1997-03-07 | 1998-08-27 | Hundegger Hans | Machine for the production of reinforcing steel mesh |
| DE19752515A1 (en) | 1997-11-27 | 1999-06-02 | Haeussler Planung Gmbh | Method and machine for the production of rolled-up reinforcing bar mats |
| US7909067B2 (en) * | 2005-02-17 | 2011-03-22 | Spinmaster Aps | Method, an apparatus and a means for making a reinforcement mesh |
| DE102008017750A1 (en) | 2008-04-07 | 2009-10-08 | Bam Ag | Machine for producing uniaxial reinforcement steel mats |
-
2013
- 2013-10-07 DE DE102013111064.9A patent/DE102013111064A1/en not_active Withdrawn
-
2014
- 2014-09-22 HU HUE14777024A patent/HUE037078T2/en unknown
- 2014-09-22 WO PCT/EP2014/070095 patent/WO2015051987A1/en active Application Filing
- 2014-09-22 ES ES14777024.2T patent/ES2643370T3/en active Active
- 2014-09-22 EP EP14777024.2A patent/EP3055466B1/en active Active
- 2014-09-22 CA CA2926697A patent/CA2926697C/en active Active
- 2014-09-22 PL PL14777024T patent/PL3055466T3/en unknown
- 2014-09-22 DK DK14777024.2T patent/DK3055466T3/en active
- 2014-09-22 AU AU2014334048A patent/AU2014334048B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015051987A1 (en) | 2015-04-16 |
| DE102013111064A1 (en) | 2015-04-09 |
| AU2014334048B2 (en) | 2018-02-15 |
| CA2926697A1 (en) | 2015-04-16 |
| EP3055466B1 (en) | 2017-09-13 |
| HUE037078T2 (en) | 2018-08-28 |
| DK3055466T3 (en) | 2017-11-13 |
| EP3055466A1 (en) | 2016-08-17 |
| AU2014334048A1 (en) | 2016-04-14 |
| ES2643370T3 (en) | 2017-11-22 |
| PL3055466T3 (en) | 2018-02-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20181016 |