DE202012010850U1 - Composite anchor for forming a concrete slab unit and concrete slab unit equipped with this composite anchor - Google Patents

Abstract

A composite anchor (1) for forming a concrete slab unit (25), wherein a first concrete slab (19) is connected to a second concrete slab (20) by means of the composite anchor (1) and wherein the concrete slabs (19, 20) separated by an insulating layer (23) are joined ) are reinforced by cast into the concrete slabs (19, 20) steel grid mats (21) and wherein the composite anchor (1) at least on its lower side (3) at least one angled portion (7) and the at least one angled portion (7) at least one incision (13) emanating from the outer contour (5) of the composite anchor (1), which is intended to receive a first lattice bar (22) belonging to a steel lattice mat (21), and in that the at least one section (7) formed trough (16) for receiving a crosswise to the first grid bar (22) arranged second grid bar (23) is determined, which also belongs to the steel grid mat (21), characterized in that at least one incision (13) located at an angled section (7) is configured at an angle such that two support sections (15) are formed, which are adapted to hold the first grating bar (22) in the manner of the first concrete slab (19) ) are determined and that the support portions (15) along the longitudinal extent of the first grid bar (22) are arranged.

Description

The innovation relates to a composite anchor for forming a concrete slab unit, wherein a first concrete slab is connected by means of the composite anchor to a second concrete slab and wherein the separated by an insulating layer concrete slabs are reinforced by cast into the concrete slabs steel mesh mats and wherein the composite anchor at least on its lower side at least an angled portion and the at least one angled portion is equipped with at least one outgoing from the outer contour of the composite anchor incision, which is intended to receive a belonging to a steel grid mat first grid bar and that formed by the at least one angled portion trough for receiving a crosswise to the first grid bar arranged second grid bar is determined, which also belongs to the steel grid mat.

The innovation further relates to a concrete plate unit equipped with at least one composite anchor according to the features just mentioned.

The closest prior art includes a composite anchor for concrete multilayer boards according to the EP 1 930 518 A2 , This document describes a plurality of composite anchors, which are all formed from sheet steel and have at least one angled portion. In the region of their angled sections, the composite anchors have at least one cut, the guide sections of which are arranged transversely to the longitudinal extent of the angled sections and open into a respective receiving area. Each receiving area is intended to receive a grid bar derived from a steel grid mat. The composite anchors are equipped with openings that are filled in the production process of the concrete slab units of the liquid concrete mass and / or intended for receiving additional reinforcing bars. The reinforcing bars are inserted separately from the steel grid mesh into the composite anchors and enclosed in the manufacturing process by the liquid concrete mass. They serve not only to reinforce the concrete slabs but also at the beginning of the manufacturing process for fixing the position of the composite anchor in the production of the first concrete slab. The reinforcing rods are thereby pushed in the region of the angled portions or by two opposing, located in the composite anchors breakthroughs, so that the composite anchors can not tip over in the device provided therefor. In this case, up to twelve rebars per embodiment are necessary.

The state of the art also includes a composite anchor for a composite sandwich panel according to the EP 0 131 841 A3 , Also, this composite anchor is provided with angled sections and holes in these sections also serve to insert reinforcing bars through in order to accurately install the composite anchor or anchor when making a concrete slab unit

The use of the reinforcing bars means a material overhead and their installation a time, which inevitably makes noticeable by higher manufacturing costs. Reinforcing bars also result in a higher weight of the concrete slab unit, which is not necessarily desirable.

Based on this prior art, the object of the innovation is to further develop a composite anchor of the type mentioned that at least a reduction in the number of reinforcing bars in the manufacture of concrete slab units can be achieved. Preferably, the reinforcing rods should be completely dispensed with in order to achieve a noticeable reduction in weight of concrete slab units.

The same applies to a concrete slab unit which is to be equipped with at least one composite anchor according to the solution to be found.

The solution with regard to the composite anchor can be found in the characterizing part of claim 1.

The solution with respect to the concrete slab unit is described in the characterizing part of claim 7.

The advantage of the proposed solutions is that the composite anchor in the manufacturing process of the first concrete slab on a steel mesh mat, which must be poured into the first concrete slab anyway, fixed in position can be attached. Therefore, no additional reinforcing bars are necessary for arranging the composite anchor. Arranging the composite anchor takes much less time than using reinforcing bars. In the present case, less material and shorter assembly time lead to a reduction of the production costs for a concrete slab unit. No or less rebars than previously required also reduce the dead weight of concrete slab units.

The innovation will be explained in more detail with reference to embodiments. It shows

1 a composite anchor incorporated in a concrete slab unit;

2 a first embodiment of a composite anchor;

3 a side view of the in 2 described composite anchor;

4 the sheet metal blank of in 2 and 3 described composite anchor;

5 a spatial representation of a composite anchor with inserted bars of two steel mesh mats and

6 and 7 two further embodiments of a composite anchor.

1 shows schematically in a concrete slab unit 25 integrated composite anchor 1 , The concrete slab unit 25 has a first concrete slab 19 and a second concrete slab 20 on. Between both concrete slabs 19 and 20 is located in a known manner an insulating layer 23 , In every concrete slab 19 . 20 is at least a steel grid mat 21 , also called mild steel mat, cast. In the first and second concrete slab 19 and 20 at least one composite anchor is cast in as well 1 that, like other possible composite anchors 1 , through the insulating layer 23 passed through. It can be inside the concrete slab unit 25 other known means 24 be provided for stabilization and cohesion of the concrete slab unit 25 contribute.

2 and 3 show in a front view and in a side view a first embodiment of a composite anchor 1 , The composite anchor 1 is made in known manner from sheet steel. At a level section 2 closes, the installation position of the composite anchor 1 according to the manufacturing process, an angled section 7 on, which is on the lower side 3 of the composite anchor 1 located. At the bottom of the page 3 opposite upper side 4 can be at least one more angled section 8th be provided, see dash-dotted drawn details in the drawing above left and right. Also, instead of the two suggested sections 8th the section below 7 on the upper side 4 , the lower section 7 lying opposite, designed in the same or similar manner, be provided. For the sake of clarity, the one on the lower side extends 3 located angled section 7 from its lowest limit 6 from to the dash-dotted, horizontal line 9 , please refer 3 , The angled section 7 therefore includes a sloping section 10 , a curved section 11 and a vertically disposed section 12 , One from the outer contour 5 of the composite anchor 1 outgoing vertical incision 13 leads through the sloping section 10 , through the curved section 11 and ends in the vertical section 12 , The incision 13 is in the area of the oblique and the vertical section 10 . 12 each with an extension 14 both extending horizontally to the right in the drawing, see also 4 , The extensions 14 can also extend to the left. Through the extensions 14 are thus in the oblique section 10 and in the vertical section 12 one support section each 15 formed, that is, in the angled section 7 present incision 13 has two support sections 15 on, extending along the longitudinal extent of a first grid bar 22 a steel grid mat 21 extend. With the two support sections 15 is the composite anchor 1 in its installed position directly on a first grid 22 one in the first concrete slab 19 located steel grid mat 21 supported. The two spaced support sections 15 include the grid bar 22 pharynx, so by a maximum of 180 °. The support sections 15 are formed like a pharynx. A second grid 23 that of the support sections 15 included first grid bar 22 crosses, is in a known manner in a hollow 16 passing through the angled section 7 is formed. When placing the compound anchor 1 on a first grid 22 the steel grid mat 21 becomes the composite anchor 1 under guidance at the incision 13 first at the steel grid mat 21 threaded and then, in the drawing to the left, moved so far until the first grid 22 at the end of the two extensions 14 has arrived and with his support sections 15 on the first grid 22 supported. The support sections 15 are thus for the pharyngeal embrace of the first grid bar 22 certainly. The drawing shows the arrangement of composite anchors 1 and steel grid mat 21 in the production of the first concrete slab 19 , After pouring the liquid concrete mass into a designated form of the composite anchor remains 1 after hardening the concrete mass firmly enclosed in the first concrete slab 19 , The composite anchor 1 protrudes over the first concrete slab during this production section 19 out, then penetrates the insulation layer 23 and ends after another manufacturing stage in the second concrete slab 20 , please refer 1 ,

As also possible with the embodiments described below, can be on the upper side 4 of the composite anchor 1 , also one with an extension 14 equipped incision 13 be provided of the type just described. Also can on the composite anchor 1 arranged in a known manner at suitable locations not shown penetrations in the form of round, square or oval holes, which in the manufacturing process of the concrete slab unit 25 be penetrated by the liquid concrete mass. Further funds 24 , z. B. retaining anchor lying on the inside of the first concrete slab 19 to the second concrete slab 20 lead and stabilization of the concrete slab unit 25 can also be used.

The alternative proposed at least one on the upper side 4 of the composite anchor 1 provided angled section 8th is around a vertical bend line 17 bent. At least one of the outer contour 5 of the composite anchor 1 outgoing cut 13 makes this possible, it is irrelevant whether the or the angled sections 8th protrude into the image plane or lead out of this. The preferred two angled sections 8th serve inter alia to absorb forces acting in the example perpendicular to the image plane, cf. 3 ,

4 shows the material blank of the composite anchor just described 1 in the form of a circuit board. The board has in the example a square or rectangular shape. In the drawing below is the horizontal bend line 18 for making the at the bottom side 3 located angled section 7 located. Another horizontally arranged bending line 18 is on the upper side 4 marked, if applicable, also on the upper side 4 an angled section 7 provided. Alternatively, above are two vertical bendlines 17 drawn, which then apply when looking for two angled sections 8th decides how to get these out of 2 . 3 and 5 can be seen. The two angled sections 8th either protrude from the image plane or run into the image plane. From the bottom side 3 starting from the incision extends 13 to the top, from which the extensions 14 angled, ie in a horizontal or oblique direction from the incision 13 lead away and the two spaced support sections 15 form. The same arrangement is also on the upper side 4 possible. The angled arrangement also applies to all other extensions 14 that only has one support section 15 exhibit.

5 shows in a spatial representation the in 2 described composite anchor 1 along with the one at the bottom 3 located angled section 7 and the two angled sections arranged on the top right and left 8th , Shown are the one on the lower side 3 present incision 13 and the one on the upper side 4 provided incision 13 , Shown is ever a crossing point 21a a first and a second grid bar 22 . 23 a steel grid mat 21 that are in the first concrete slab 19 located and a steel grid mat 21 that in the second concrete slab 20 is provided. The composite anchor 1 supports itself with its two support sections 15 on a first grid 22 the steel grid mat 21 that for the first concrete slab 19 is provided from. At the same time, the second grid is located 23 who is the first lattice staff 22 crosses, in the hollow 16 of the angled section 7 , Thus the compound anchor 1 This position must take this after threading in the incision 13 at the height of the two extensions 14 in the drawing to be moved to the left, with simultaneous guidance in the trough 16 its final position in the two extensions 14 to reach. In this situation, the composite anchor falls 1 no longer from the steel grid 21 so that the device for making the first concrete slab 19 can be filled with concrete mass. After completion and after putting on the insulating layer 23 the compound anchor protrudes 1 from the first concrete slab 19 up over the insulation layer 23 out. Subsequently, in a device is also the placement of the second concrete slab 20 certain steel grid mat 21 on the composite anchor 1 , This will be a first grid 22 the one for the second concrete slab 20 certain steel grid mat 21 in the on the upper side 4 located incision 13 introduced and by a small horizontal movement of the steel mesh mat 21 in the drawing to the left, brought into its final position, in which he is in the extension 14 of the incision 13 located and thus the steel grid mat 21 on the composite anchor 1 rests. The second crosswise grid 23 the steel grid mat 21 runs on the inside 2a of the composite anchor 1 that is, on that surface, that of the two angled sections 8th is not claimed. The drawing shows this installation state, although it is still possible at the two angled sections 8th also one from top to bottom leading incision 13 for receiving the second grid bar 23 one for the second concrete slab 20 certain steel grid mat 21 provided. Referring to the illustration according to 5 would then have the steel grid mat 21 so on the compound anchor 1 put on that the bars 23 lying on top or it would have the two angled sections 8th be arranged rotated 180 °.

While in the 2 and 5 shown composite anchor 1 at a crossroads 21a two arranged at right angles bars 22 . 23 a steel grid mat 21 is attached shows 6 a composite anchor 1 which is to touch down on two crossing points 21a each of a steel grid mat 21 suitable is. There are two with support sections 15 equipped cuts 13 provided in the angled section lying in the drawing below 7 are arranged. The for the attachment of the composite anchor 1 on a steel grid mat 21 required and intersecting bars 22 . 23 are marked. At the top 4 of the composite anchor 1 can alternatively and rotated by 180 ° also cuts 13 be provided, regardless of whether on the upper side also an angled section 7 is provided or not. In the example is on the upper side 4 no angled section 7 or 8th provided so that at each incision 13 only one support section each 15 is formed. The extensions 14 at the incisions 13 at the bottom 3 of the composite anchor 1 are opposite to those on the upper side 4 of composite anchor 1 provided extensions 14 arranged. The extensions 14 overall, they can always be arranged pointing in the same direction.

7 shows a composite anchor 1 for example, at three crossing points 21a a steel grid mat 21 can be placed and therefore at least at its angled section 7 three cuts 13 having. There are also those technical features application, which have been previously described. The drawing shows a possible feature. Shown in the drawing on the right is the angled section 7 end cut so that in this area only a single support section 15 is formed, located in the vertical section 12 located. The cuts 13 can thus have one or two support sections 15 exhibit.

They are therefore composite anchors 1 possible, the only angled section 7 exhibit and with this section 7 on a steel grid mat 21 can be placed in the first concrete slab 19 located. In this embodiment, the otherwise missing on the upper side 4 located at least one more angled section 8th , Starting from the angled section 7 In such embodiments, the composite anchor terminates 1 upwards as a simple sheet metal plate section. At the thus formed, the flat section 2 forming sheet metal plate section, ie on the upper side 4 can work in the same way as in the 1 to 6 also described at least one or more cuts 13 be provided, but then per incision 13 only one support section 15 exhibit. During the manufacturing process of the second concrete slab 20 can at least one of the second concrete slab 20 belonging steel grid mat 21 in at least one incision 13 threaded and on the composite anchor 1 be supported. It is thus about the at least one composite anchor 1 a direct connection between the steel grid mats 21 the first and the second concrete slab 19 . 20 produced. First and second steel mesh mat 21 are thus by the at least one composite anchor 1 interconnected, which is of particular advantage for static reasons.

All technical features described so far are mutually variable within the meaning of the proposed solutions. By the term "angled section" are all kinks, angular projections, bulges, etc. recorded, with the support sections described 15 can be equipped. The innovation is therefore not limited to the drawn embodiments.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1930518 A2 [0003]
• EP 0131841 A3 [0004]

Claims (9)

Composite anchor ( 1 ) to form a concrete slab unit ( 25 ), with a first concrete slab ( 19 ) with the help of the composite anchor ( 1 ) with a second concrete slab ( 20 ) and where by an insulating layer ( 23 ) separate concrete slabs ( 19 . 20 ) through into the concrete slabs ( 19 . 20 ) embedded steel mesh mats ( 21 ) and wherein the composite anchor ( 1 ) at least on its lower side ( 3 ) at least one angled section ( 7 ) and the at least one angled portion ( 7 ) with at least one of the outer contour ( 5 ) of the composite anchor ( 1 ) outgoing incision ( 13 ), which is designed to accommodate a steel mesh mat ( 21 ) belonging first grid bar ( 22 ) and that the at least one section ( 7 ) formed hollow ( 16 ) for receiving a crosswise to the first grid bar ( 22 ) arranged second grid bar ( 23 ), which is also the steel mesh mat ( 21 ), characterized in that at least one at an angled portion ( 7 ) incision ( 13 ) is angularly designed so that two support sections ( 15 ) are formed, which for the throat-like embracing of the first grid bar ( 22 ) one in the first concrete slab ( 19 ) steel grid mat ( 21 ) and that the support sections ( 15 ) along the longitudinal extent of the first grid bar ( 22 ) are arranged. Composite anchor according to claim 1, characterized in that the support sections ( 15 ) on extensions ( 14 ) of the at least one incision ( 13 ) are continued in the horizontal or oblique direction. Composite anchor according to claim 1, characterized in that on its upper side ( 4 ) at least one angled section ( 8th ) and that the bending line ( 17 ) for each angled section ( 8th ) is arranged vertically. Composite anchor according to claim 1, characterized in that on its upper side ( 4 ) at least one incision ( 13 ) is provided, which has a support section ( 15 ), for supporting a first grid bar ( 22 ) a steel grid mat ( 21 ), that of the second concrete slab ( 2 ) belongs. Composite anchor according to claim 4, characterized in that the support section ( 15 ) on an extension ( 14 ) located by the incision ( 13 ) is proceeding at an angle, that is continued in the horizontal or oblique direction. Composite anchor according to claim 1, characterized in that the at least one on the upper side ( 4 ) extension ( 14 ) in opposition to the at least one on the lower side ( 3 ) extension ( 14 ) or that all extensions ( 14 ) are arranged pointing in the same direction. Concrete slab unit ( 25 ) with a first concrete slab ( 19 ) and with a second concrete slab ( 20 ) through an insulating layer ( 23 ) separated by at least one composite anchor ( 1 ) and wherein the concrete slabs ( 19 . 20 ) through into the concrete slabs ( 19 . 20 ) embedded steel mesh mats ( 21 ) are reinforced, characterized in that the at least one composite anchor ( 1 ) directly on one of the first concrete slabs ( 19 ) steel grid mat ( 21 ) and that the steel mesh mat ( 21 ) of the second concrete slab ( 20 ) on the composite anchor ( 1 ) rests. Concrete slab unit according to claim 7, characterized in that at least one at an angled portion ( 7 ) of the at least one composite anchor ( 1 ) incision ( 13 ) is angularly designed so that two support sections ( 15 ) are formed for the throat-like embracing a first grid bar ( 22 ) in the first concrete slab ( 19 ) steel grid mat ( 21 ) and that the support sections ( 15 ) along the longitudinal extent of the first grid bar ( 22 ) are arranged. Concrete slab unit according to claim 7, characterized in that the steel mesh mat ( 21 ) of the second concrete slab ( 20 ) by means of at least one first grid bar ( 22 ) on at least one on the upper side ( 4 ) of the composite anchor ( 1 ) incision ( 13 ) is supported.

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