CN113175094A

CN113175094A - Anchor rail

Info

Publication number: CN113175094A
Application number: CN202110109955.0A
Authority: CN
Inventors: F·布克哈特; M·彼特拉施
Original assignee: Fischerwerke GmbH and Co KG
Current assignee: Fischerwerke GmbH and Co KG
Priority date: 2020-01-27
Filing date: 2021-01-27
Publication date: 2021-07-27
Also published as: DE102020131596A1; TW202142766A

Abstract

In order to subsequently or in a planned manner fix a C-shaped profiled rail (2) of an anchor rail (1) which is arranged close to the edge in a building component (5) made of concrete, the invention proposes that a strip-shaped surface anchor (9) is suspended in a slot (3) of the C-shaped profiled rail (2) and fixed on or in the building component (5).

Description

Anchor rail

Technical Field

The invention relates to an anchor rail having the features of the preamble of claim 1. The invention furthermore relates to two fixing assemblies with such an anchor rail according to claims 11 and 12.

Background

The anchor rail is usually arranged flush in the floor or also in a wall made of concrete and serves for fixing objects, for example machines, by means of, for example, hammer screws. By "flush underground" is meant that the anchor rail is embedded in the concrete and the side of the anchor rail is flush with the surface of the concrete, for example. In the production of floors and the like, the anchor rail is encapsulated on three sides with concrete by injection molding. The anchor rail typically has a C-shaped profiled rail, that is to say a square or rectangular tube profile with a continuous longitudinal slit at the transverse center of the side, which is also referred to herein as the "upper side".

European patent application EP 3438361 a1 discloses an anchor rail with a C-shaped profile rail, from which, for anchoring in concrete, a pin-shaped anchor with a foot plate is anchored in the longitudinal center plane of the C-shaped profile rail, projecting from the underside opposite the slit of the C-shaped profile rail, which is poured into the concrete when pouring (ebebetonieren) the anchor rail concrete into the concrete and the anchor rail is anchored in the concrete perpendicularly to the surface of the concrete against a break from the concrete. The anchor rails are arranged parallel to and close to the edges of the concrete body. If excessive transverse forces act on the anchor rail parallel to the surface of the concrete and in the direction of the edge, the anchor rail may break off from the concrete body due to its arrangement in the vicinity of the edge (heraussbreche) and leave a break cone or generally a break point in the concrete body. For structural reasons, anchor rails arranged near the edges of the concrete body must therefore mostly be "back-anchored". In order to achieve back-anchoring against lateral forces transverse to the C-shaped profile rail and parallel to the surface of the concrete, known anchor rails have rod-shaped anchors which project perpendicularly to the center plane in which the pin-shaped anchors are located from the underside opposite the slot of the C-shaped profile rail. During the casting of concrete, the rod-shaped anchoring elements are parallel to the surface of the concrete and cast below the surface of the concrete at the height of the sunken C-shaped profile rail. The rod-shaped anchoring element absorbs transverse forces acting on the anchor rail and prevents the anchor rail from being able to break off from the concrete body in the direction of the edge of the concrete body. A disadvantage of the back anchors of the prior art is that they are not subsequently placed on the concrete body, but must be cast together already during the production of the concrete body.

Disclosure of Invention

The object of the invention is to provide a more flexible back anchor which on the one hand offers the possibility of a subsequent back anchoring of the anchor rail on or in the concrete and on the other hand already enables the planned back anchoring of the anchor rail during the casting of the concrete.

According to the invention, this object is achieved by the features of claims 1, 11 and 12. The anchor rail according to the invention has a C-shaped profiled rail, which has a gap in a first side of the C-shaped profiled rail, which is provided for concrete casting in such a way that the first side of the C-shaped profiled rail is in particular flush with the surface of the concrete and the C-shaped profiled rail is additionally embedded in the concrete. The gap is in particular a gap which is continuous in the longitudinal direction of the C-shaped profile rail, in particular in the transverse center of the C-shaped profile rail or in the first side thereof. One or more anchoring elements project from a second side opposite the first side, said anchoring elements anchoring the concrete-poured C-shaped profiled rail in the concrete.

Furthermore, the anchor rail according to the invention comprises at least one surface anchor for back anchoring of the C-shaped profiled rail, which surface anchor rests on a first side of the C-shaped profiled rail and protrudes from a third side of the C-shaped profiled rail (that is to say with respect to a third side of the C-shaped profiled rail adjoining the first side). The part of the surface anchor projecting from the C-shaped profile rail projects from the C-shaped profile rail, in particular at right angles, and is designed as a tab. The webs are in particular flat steel or cut or stamped steel plates. The tab has a width of in particular less than 60 mm, preferably between 30 mm and 50 mm. The term "width" is understood to mean the extent of the extension of the webs in the longitudinal direction of the C-shaped profile rail. In particular, the length of the tab is many times greater than the width of the tab. "length" is to be understood as the extension of the tab away from the anchor rail. Preferably, the length of the tab corresponds to at least three times, and in particular at least five times, the width of the tab. However, depending on the structural surroundings and the intended use of the surface anchor, the length may also correspond to five to ten or twenty times the width. Also longer tabs are possible. In particular in the case of longer anchor rails, a plurality of surface anchors are arranged, in particular at equal distances from one another, on the anchor rail, as a result of which a constant back anchoring is achieved over the entire length of the anchor rail.

The surface anchor does not have to be directly connected to the third side or arranged directly on the third side, but merely projects or protrudes beyond the side. The support can be realized directly or indirectly, for example by means of an intermediate piece for height compensation. Preferably, the surface anchor may be connected to the C-shaped profiled rail on the first side. The surface anchoring element is in particular operatively connected to the slot of the C-shaped profiled rail and can be additionally connected to the first side of the C-shaped profiled rail. However, the surface anchor does not necessarily have to be forcibly fitted into the slit. The surface anchor can, for example, rest only flush with the surface and, in particular, only partially covering the gap on the first side of the C-shaped rail and be fixed there, in particular by welding, to the C-shaped rail. The surface anchor can be designed at least partially as a sheet metal strip type with a cut-out, wherein the size of the cut-out substantially corresponds to the extent of the gap of the C-shaped profile rail. In particular, the sheet metal strip with the cut-out is welded or otherwise connected (for example by riveting) to the first side of the C-shaped profile rail or fixed thereto in such a way that the cut-out at most partially covers the gap. In particular, the width of the notch corresponds to the transverse width of the slot of the C-shaped profile rail.

The surface anchor, more precisely the blade of the surface anchor, is arranged on the C-shaped profiled rail in such a way that it projects laterally from the C-shaped profiled rail and rests on or ends flush with the surface of the concrete in the case of a C-shaped profiled rail cast with concrete in a defined manner. One or more surface anchors have an anchoring mechanism spaced from the C-shaped rail, particularly at the ends of the tabs. The anchoring mechanism is generally a viable solution or device for securing surface anchors to concrete. For example, it may be a hole in the web, through which the surface anchor can be fixed to the concrete by means of a fixing mechanism, for example a pin anchor, a concrete screw, a bolt that is chemically fixed in the concrete, or the like. It is also possible to fix the surface anchoring means, for example by gluing to concrete, wherein the surface center point of the gluing surface is spaced from the C-shaped rail when the glue reaches the C-shaped rail. The anchoring element is in this case an adhesive. However, the surface anchor can also be anchored so deeply in the building component made of concrete, in particular poured into the building component, that the surface anchor is particularly flush with the surface of the concrete or the surface of the building component. The surface anchor therefore terminates particularly flush with the surface. In this intended anchoring of the C-shaped profiled rail in the concrete, the surface anchor is therefore at least partially connected to the concrete in a cohesive manner and the anchoring means are in this case, in particular, also at least partially cast into the concrete. In this case, the anchoring means are in particular holes, pins, shaft anchors, etc. The advantages of the proposed type of anchoring are based on the aspect that the surface of the concrete is substantially fully available and not obstructed by the surface anchors. In the subsequent anchoring, the surface anchor rests on the C-shaped profile rail and thus produces a possibly disturbing projection on the otherwise flat surface of the concrete.

The invention has the advantage, on the one hand, that the already cast C-shaped profiled rail of the anchor rail can be subsequently fixed against lateral force loads, i.e. back anchoring can be mentioned. This may be advantageous or even necessary if the C-shaped profiled rail is arranged close to the edge in the concrete, if there is a fear or it has already occurred that the concrete breaks at the edge of the concrete laterally of the C-shaped profiled rail. The prevention of concrete cracking also provides for the intended anchoring of the C-shaped profiled rail, wherein here, as already mentioned, the entire surface of the concrete can be utilized.

According to the invention, the surface anchor, more precisely the tab, may project from the C-shaped rail laterally at or on the third side, or through a plane flush with the first side of the C-shaped rail, on a plane flush with the first side of the C-shaped rail having the slit. The third side is the side of the C-shaped profile rail adjacent to the first side having the gap. In the first case, the surface anchor rests on the surface of the concrete when the C-shaped profiled rail is concreted as specified. In the second case, the surface anchor penetrates laterally into the concrete from the C-shaped profile rail. The second case provides for the initial placement of the surface anchor on the C-shaped profiled rail, so that the surface anchor is also concreted when concreting the C-shaped profiled rail and does not have to be subsequently sunk into the concrete. As already mentioned, this embodiment has the advantage that the surface anchor does not rest on the concrete over its entire length, but is partially or completely in the concrete.

The fastening of the surface anchoring elements to the C-shaped profiled rail can be achieved, for example, by hanging (Einh ä ngen) the surface anchoring elements into the slots of the C-shaped profiled rail. The suspension need only be tensile in the direction in which the surface anchoring element protrudes from the C-shaped profiled rail, i.e. the lateral forces of the C-shaped profiled rail can be transmitted as tensile forces to the surface anchoring element. The suspension of the surface anchor into the slot of the C-shaped profiled rail is a simple, quick and inexpensive possibility to connect the surface anchor with the C-shaped profiled rail.

The surface anchor may have a single hook that encompasses a first slit edge of the slit of the C-shaped profile rail to connect with the C-shaped profile rail such that the single hook transmits lateral forces of the C-shaped profile rail as a pulling force onto the surface anchor. The surface anchor may also comprise a double hook which, when the double hook or surface anchor is connected to the C-shaped profiled rail, encompasses a first slit edge of the slit of the C-shaped profiled rail and engages (undercut) an opposite second slit edge of the slit of the C-shaped profiled rail, so that the double hook cannot be easily removed from the C-shaped profiled rail.

In order to connect the surface anchor to the C-shaped profiled rail, a further embodiment of the invention provides a fastening element which is fastened to or in the C-shaped profiled rail and has a shank which projects through a slot in the first side of the C-shaped profiled rail. The fastening means can be, for example, a hammerhead screw or a slide (Nutenstein) with a threaded pin screwed in. The surface anchor is fixed to the shank of the fixing element, which projects out of the slot of the C-shaped profile rail.

In a further advantageous embodiment of the invention, the surface anchor has a surface structure, in particular a toothing, on the side facing away from the first side. The fixing element, for example as described in the preceding paragraph, can thereby be fixed by means of a form and/or friction fit against displacement along the gap of the C-shaped profile rail.

In one embodiment of the invention, the surface anchor connects the C-shaped profiled rail to a second C-shaped profiled rail, which is arranged at a distance from the C-shaped profiled rail. The surface anchor transfers load from one of the C-shaped rails to the other of the spaced C-shaped rails.

In one embodiment of the invention, the surface anchoring element has a pseudoplastically strained shape memory alloy or is composed of a pseudoplastically strained shape memory alloy. Shape memory alloys refer to metal alloys that change their shape by a phase transformation of their crystalline structure, particularly between martensite and austenite. Phase changes and shape changes occur when the transition temperature is reached or exceeded. Shape memory alloys must be pre-plastically deformed, which typically, but not mandatorily, occurs by mechanical deformation, which can then be fully or partially recovered by heating to or above the transition temperature. Shape memory alloys are also known which have a two-way effect, which deform at high temperatures and return to deformation, either completely or partially, at low temperatures. In this embodiment of the invention, after the surface anchor has been fixed on or in the concrete, a tensile stress can be generated in the surface anchor by heating the surface anchor to or above the transition temperature of the shape memory alloy, i.e. the surface anchor is prestressed.

One embodiment of the invention provides an elastically and/or plastically deformable strip on the outside of a fourth side of the C-shaped profiled rail which is adjacent to the first side and opposite the third side. The first side has a slit and the surface anchor protrudes from the adjoining third side. Thus, the deformable strip is located outside the C-shaped rail with respect to the side from which the surface anchor protrudes. Preferably, the deformable strip occupies the entire face of the fourth side of the C-shaped profile rail. The deformable strip effects a slight displacement of the C-shaped profiled rail in the concrete in a direction transverse to the C-shaped profiled rail against the direction in which the surface anchor projects from the C-shaped profiled rail. In particular, the small displacement due to the compression of the strip before the C-shaped profiled rail contacts the concrete enables the single and double hooks to be fixed in tension in the slot of the C-shaped profiled rail. In other words, a certain play between the single and double hooks and the C-shaped profiled rail can be compensated before the C-shaped profiled rail actually contacts the concrete.

For the purpose of illustrating the fixing assembly according to the invention, reference is made to the preceding description of the anchor rail according to the invention.

In the fastening arrangement according to the invention for the back anchoring of the anchor rail, the C-shaped profiled rail of the anchor rail is anchored in the concrete-made building component in a sunk manner such that its first side with the gap is flush with the surface of the building component. Furthermore, the surface anchor is connected to the C-shaped profiled rail on a first side and protrudes from the C-shaped profiled rail on a third side adjoining the first side. The surface anchoring elements, more precisely the webs, rest on the surface of the building component and are fixed to the building component at a distance from the C-shaped profile rail or penetrate laterally into the building component from the C-shaped profile rail.

In particular, in such a fastening assembly, the C-shaped profile rail is arranged close to the edge of the building element, i.e. close to the edge, and in particular parallel to the edge of the building element. "close" means that the distance between the C-shaped profile rail and the edge corresponds at most to twice the length of the C-shaped profile rail, in particular that the distance is less than the length of the profile rail. The surface anchor, more precisely the blade of the surface anchor, extends away from the edge of the building element, in particular at right angles to the C-shaped rail. The tabs of the surface anchoring elements thus face away from the edge. The bracket is fixed, in particular at the bracket end facing away from the C-shaped profile rail, to the surface of the building element or to the building element itself, thereby ensuring a stable back anchorage of the anchor rail. Thus, with the fixing assembly according to the invention, the anchor rail can be reliably cast in the component near the edge without the risk of breaking from the building element when loaded.

The C-shaped profile rail can, as already described, also be anchored deep into the building component made of concrete, in particular be cast into the building component, such that the surface anchor is flush with the surface of the building component.

The features and feature combinations mentioned above in the description, the embodiments and the embodiments of the invention and the features and feature combinations mentioned below in the description of the figures and/or shown in the figures can be used not only in the respectively described or shown combination but also in substantially any other combination or alone. Embodiments of the invention are possible which do not have all the features of the dependent claims. The individual features of the claims can also be replaced by other disclosed features or combinations of features. An embodiment of the present invention having substantially any partial feature of a feature portion of one example, rather than all features of one or more examples, may be combined as necessary with one, more than one or all features of one or more other examples.

Drawings

The invention is explained in detail below with the aid of embodiments shown in the drawings. These five figures show five embodiments of an anchor rail according to the invention in perspective view. For purposes of clarity and simplicity, the same reference numbers will be used in all of the drawings. Further advantages and aspects of the invention emerge from the claims and the following description of a preferred embodiment. In which is shown:

figure 1 shows an anchor rail according to the invention in a perspective view;

FIG. 2 illustrates one embodiment of an anchor rail according to the present invention;

FIG. 3 illustrates one embodiment of an anchor rail according to the present invention;

FIG. 4 shows one embodiment of an anchor rail according to the present invention, and

figure 5 shows one embodiment of an anchor rail according to the present invention.

Detailed Description

The anchor rail 1 according to the invention shown in fig. 1 has a C-shaped profiled rail 2 with a rectangular hollow profile having a slit 3 running in the longitudinal direction in a first side 4, which can also be referred to as the upper side of the C-shaped profiled rail 2.

The anchor rail 1 or its C-shaped profile rail 2 is provided for concrete casting in a building component 5, such as, for example, a concrete floor, in such a way that, as can be seen in fig. 1, a first side 4 of the C-shaped profile rail 2 with the gap 3 is flush with the surface of the building component 5 and the C-shaped profile rail 2 is additionally lowered into the building component 5. The building element 5 is depicted with only a single edge and is depicted transparently, so that the anchor rail 1 can be seen.

The anchoring element 7, which is fixed (e.g. welded) to the second side 6 of the C-shaped profiled rail 2, projects from the second side 6, which is opposite the first side 4 and which may also be referred to as the underside of the C-shaped profiled rail 2. In this embodiment, the anchoring element 7 is a pin with a flange-shaped foot 8 at its end remote from the C-shaped profile rail 2. The anchoring element 7 is embedded in the concrete of the building component 5 and keeps the C-shaped profiled rail 2 perpendicular to its surface to prevent it from breaking from the building component 5. In this embodiment, the anchoring element 7 is arranged in the longitudinal center plane of the C-shaped profiled rail 2. The anchoring elements 7 can also project from the second side 6 of the C-shaped profiled rail 2, for example, obliquely to one another in a V-shape, viewed in the longitudinal direction of the C-shaped profiled rail 2, and project into the building component 5 (not shown).

In this exemplary embodiment, a strip-shaped surface anchor 9, which rests on the first side 4 of the C-shaped profile rail 2 and projects as a tab at or from a third side 10 of the C-shaped profile rail 2 adjoining the first side 4, is suspended into the slot 3 of the C-shaped profile rail 2. The surface anchor 9 rests on the surface of the building component 5. The surface anchor 9 has a single hook 11 at one end, which encompasses a first slot edge 12 of the slot 3 of the C-shaped profiled rail 2 and connects the surface anchor 9 in this way in a tensile manner to the C-shaped profiled rail 2. "tensile" means that the individual hooks 11 of the surface anchor 9, which hooks are suspended in the slots 3 of the C-shaped profile rail 2, transmit lateral forces acting transversely to the C-shaped profile rail 2 to the surface anchor 9 as tensile forces acting in the longitudinal direction of the surface anchor 9.

Near the end of one of the C-shaped profiled rails 2 remote from the anchor rail 1 according to the invention and spaced from the C-shaped profiled rail 2 anyway, the surface anchor 9 has a hole on the end of the tab, which hole is referred to here in general as the anchoring means 13 of the surface anchor 9. By forming the holes of the anchoring means 13 in the web, the surface anchor 9 can be fastened to the building element 5 at a distance from the C-shaped profiled rail 2 and thus serve for the back anchoring of the C-shaped profiled rail 2. For this purpose, for example, screws can be screwed through the anchoring means 13, which are embodied as holes, of the surface anchor 9 into expansion pins which are spread apart in the building element 5 and anchored (not shown).

The fixing of the surface anchor 9 can also be achieved, for example, by gluing to the surface of the building element 5. In this case, the adhesive forms an anchoring means which then also connects the surface anchor 9 to the building element 5 spaced apart from the C-shaped profiled rail 2 when the adhesive is applied up to the C-shaped profiled rail 2 onto the surface anchor 9.

On the fourth side 14, the C-shaped profile rail 2 has a deformable strip 15 on the outside, which completely or almost completely covers the fourth side 14 of the C-shaped profile rail 2. In this embodiment, the strip 15 is constructed of a resilient, solid foam. The fourth side 14 of the C-shaped profile rail 2 adjoins the first side 4 thereof, which has the slot 3, and the opposite second side 6, from which the anchoring element 7 projects. The fourth side 14 of the C-shaped profile rail 2 is opposite the third side 10, at which third side 10 or from which third side 10 the surface anchor 9 protrudes. When the C-shaped profiled rail 2 is loaded transversely to itself, that is to say along and away from the surface anchor 9, the deformable strip 15 enables a small movement of the C-shaped profiled rail 2 transversely to the C-shaped profiled rail 2, parallel to the surface of the building component 5 and away from the surface anchor 9 in the building component 5. Premature failure of the concrete of the building element 5 under such transverse stress of the C-shaped profiled rail 2 is thereby avoided.

The C-shaped profile rail 2 of the anchor rail 1 according to the invention has preferably a plurality of surface anchors 9 which are suspended parallel to one another transversely to the C-shaped profile rail 2 and spaced apart from one another in the longitudinal direction of the C-shaped profile rail 2 into the slots 3 of the C-shaped profile rail 2 and are fixed to the building component 5. The surface anchor 9 secures the C-shaped profiled rail 2 against lateral forces and, in particular, prevents the concrete from breaking when the C-shaped profiled rail 2 is arranged close to the edge in the building component 5. The surface anchor 9 protrudes from the C-shaped profiled rail 2 on the side opposite the edge 16 of the building element 5 close to the C-shaped profiled rail 2.

As shown in fig. 1 with broken lines, the surface anchor 9 can also be bent such that it penetrates into the concrete of the building element 5 laterally next to the C-shaped profile rail 2 and secures the C-shaped profile rail 2 to the building element 5 against transverse forces. In this case, the surface anchor 9 penetrates the surface of the building component 5 laterally alongside the C-shaped profiled rail 2, wherein the surface of the building component 5 is flush with the first side 4 of the C-shaped profiled rail 2 and thus forms a plane flush with the first side 4 of the C-shaped profiled rail 2.

In fig. 2, the surface anchor 9 has double hooks 17 at its end instead of a single hook 11. As with the single hook 11, the double hook 17 surrounds a first slit edge 12 of the slit 3 of the C-shaped profiled rail 2 and additionally engages below a second slit edge 18 opposite the first slit edge 12, so that the double hook 17 cannot be pulled out of the slit 3 and the surface anchor 9 cannot be lifted from the first side 4 of the C-shaped profiled rail 2.

In the embodiment of the invention shown in fig. 3, a hammerhead screw 19 connects the surface anchor 9 with the C-shaped profile rail 2. It is also generally understood that the hammer head screw 19 of the fastening element 20 is suspended with its hammer head 21 into the C-shaped profile rail 2, so that its shank 22 projects from the slot 3 of the C-shaped profile rail 2 on the first side 4. Instead of the hooks 11, 17, the surface anchor 9 in this embodiment of the invention has a hole through which the shank 22 of the hammer screw 19 forming the fastening element 20 passes, so that the surface anchor 9 hangs in the slot 3 of the C-shaped profile rail 2 and is connected to the C-shaped profile rail 2 in this way. A component, not shown, for example a frame, can be fastened to a shank 22 of the hammer head screw 19 forming the fastening element 20, which shank projects from the C-shaped profile rail 2 and at the same time from the building element 5.

In the exemplary embodiment of the invention shown in fig. 4, two C-shaped profile rails 2 are arranged spaced apart from one another and parallel to one another with their first side 4 with the gap 3 sunk flush with the surface of a building element 5. A plurality of surface anchors 9 arranged transversely to the C-shaped profile rail 2 and parallel to one another connect the two C-shaped profile rails 2, whereby the C-shaped profile rail 2 arranged close to the edge of the building element 5 can be fixed to the C-shaped profile rail 2 further away from the edge of the building element 5. Only one surface anchor 9 is shown in fig. 4.

In the embodiment shown in fig. 5, the surface anchor 9 is formed by two webs, each having an anchoring means 13 and a strip 25 of sheet material with a recess 26. The sheet metal strip 25 is welded to the first side 4 of the C-shaped profile rail 2 in such a way that the recess 26 is oriented parallel to the slit 3 and therefore does not cover the slit 3 of the C-shaped profile rail 2. The main difference of the embodiment of fig. 5 compared to the previous embodiment is that the first side 4 of the C-shaped profile rail 2 is not flush with the surface of the building component 5, but the surface anchor 9 ends flush with the surface of the component 5. The entire surface of the component 5 can thus be utilized, since no projections due to the surface anchor 9 occur. The C-shaped profiled rail 2 is cast into the building element 5 together with the surface anchor 9.

The surface anchor 9 has a surface structuring 23 in the form of teeth 24. Thus, for example, a hammer head screw which is fixed in the slot 3 by means of a toothed washer can be fixed to prevent sliding in the rail longitudinal direction, i.e. along the slot 3 (not shown). Here, a toothed washer engages in the toothing 24.

The surface anchor 9 can be made of in principle any material, for example a metal strip. The surface anchoring element 9 can also be made of plastic, in particular fiber-reinforced plastic. For example, the surface anchors 9 may be composed of or have a prepreg. The prepreg has fibres embedded in a synthetic resin which can be hardened for adhesion to the surface of the building component 5 (not shown).

One embodiment of the invention provides that the surface anchor 9 is made of a shape memory alloy that is pseudoplastically strained or in any case has such a shape memory alloy. When the surface anchor 9 is heated to or above the transition temperature of the shape memory alloy, the surface anchor 9 shortens. This makes it possible to generate a tensile stress in the surface anchor 9, which prestress the C-shaped profiled rail 2 transversely to the C-shaped profiled rail 2 and parallel to the surface of the building element 5, away from the edge of the building element 5 close to the C-shaped profiled rail 2.

The anchor rail 1 with its C-shaped profiled rail 2 embedded in the building component 5, the anchoring element 7 projecting from its underside and likewise embedded in the building component 5 and one or more surface anchors 9 fixed on or in the building component 5 constitute a fixing assembly according to the invention.

List of reference numerals

1 Anchor rail

2C-shaped profiled rail

3 gap

4 first side of

5 building element

6 second side surface

7 anchoring element

8 support leg

9 surface anchoring element

10 third side

11 Single hook

12 first slit edge

13 anchoring mechanism

14 fourth side

15 strips

16 edge

17 double hook

18 second slit edge

19-hammer head screw

20 fixing piece

21 hammer head

22 rod part

23 surface structuring

24 tooth system

25 strip of plate material

26 is notched.

Claims

1. An anchor rail for anchoring in concrete, having a C-shaped profiled rail (2) which has a slit (3) in a first side (4) and which has an anchoring element (7) on a second side (6) opposite the first side, characterized in that the anchor rail (1) has a surface anchor (9) for back anchoring of the C-shaped profiled rail (2), which rests on the first side (4) of the C-shaped profiled rail (2) and protrudes from a third side (10) of the C-shaped profiled rail (2) which adjoins the first side (4), and in that the surface anchor (9) has an anchoring means (13) which has a spacing relative to the C-shaped profiled rail (2).

2. An anchoring rail according to claim 1, characterised in that the surface anchoring element (9) is connected to the C-shaped profiled rail (2) on the first side (4).

3. An anchor rail according to claim 1 or 2, characterised in that the surface anchor (9) protrudes from the third side (10) of the C-shaped rail (2) on a plane level with the first side (4) of the C-shaped rail (2) or passes through a plane level with the first side (4) of the C-shaped rail (2).

4. An anchor rail according to any one of claims 1-3, characterised in that the surface anchor (9) is suspended into the slit (3) of the C-shaped profiled rail (2).

5. An anchor rail according to one or more of claims 1-4, characterized in that the surface anchor (9) has a single hook (11) encompassing the first slit edge (12) of the slit (3) of the C-shaped profiled rail (2) or has a double hook (17) encompassing the first slit edge (12) of the slit (3) of the C-shaped profiled rail (2) and engaging the second slit edge (18) of the slit (3) of the C-shaped profiled rail (2) from below.

6. An anchor rail according to one or more of the preceding claims, characterised in that the shank (22) of a fixing element (20) which is fixed to the C-shaped profiled rail (2) and the surface anchor element (9) is fixed to the shank (22) projects from the slot (3) in the first side (4) of the C-shaped profiled rail (2).

7. An anchor rail according to one or more of the preceding claims, characterised in that the surface anchor (9) connects the C-shaped profiled rail (2) with a second C-shaped profiled rail (2) which is arranged spaced apart from the C-shaped profiled rail (2).

8. An anchor rail according to one or more of the preceding claims, characterised in that the surface anchor (9) is of shape memory alloy pseudoplastically strained.

9. An anchor rail according to one or more of the preceding claims, characterized in that the C-shaped profiled rail (2) has a deformable strip (15) outside a fourth side (14) adjacent to the first side (4) and opposite to the third side (10).

10. A mooring rail according to one or more of the preceding claims, characterized in that the surface anchor (9) has a surface structuring (23), in particular teeth (24), on the side facing away from the first side (4).

11. A fixing assembly with an anchor rail (1) according to one or more of the preceding claims, characterized in that a C-shaped profile rail (2) is anchored sunk in a building component (5) made of concrete such that a first side (4) of the C-shaped profile rail with a gap (3) is flush with the surface of the building component (5), that a surface anchor (9) is connected to the C-shaped profile rail (2) on the first side (4) and projects from the C-shaped profile rail (2) on a third side (10) adjoining the first side (4), and that the surface anchor (9) rests on the surface of the building component (5) and is fixed on the building component (5) at a distance from the C-shaped profile rail (2) or intrudes laterally from the C-shaped profile rail (2) into the building component (5) .

12. Fixing assembly with an anchor rail (1) according to one or more of claims 1 to 10, characterized in that the C-shaped profiled rail (2) is anchored in a sunk manner in the building element (5) made of concrete to such a depth, in particular into the building component (5) such that the surface anchor (9) is flush with the surface of the building component (5), the surface anchor (9) is connected to the C-shaped profiled rail (2) on a first side (4) and protrudes from the C-shaped profiled rail (2) on a third side (10) adjoining the first side (4), and the surface anchor (9) is fixed to the building component (5) at a distance from the C-shaped rail (2) or laterally protrudes from the C-shaped rail (2) into the building component (5).