EP3112543A1 - Reinforced concrete construction element with net-shaped reinforcing element - Google Patents

Abstract

The invention relates to a reinforced concrete component (1) with at least one anchor rail (3) embedded in concrete with a substantially C- or U-shaped cross section and comprising an anchor rail back (4), two anchor rail legs (5a, 5b) and one to the outside of the reinforced concrete component ( 1) open anchor rail interior (6), with at least one and substantially orthogonal to the anchor rail back (4) of the anchor rail (3) and fixed on or in the anchor rail back and pointing away from the anchor rail back anchor (7), and with at least one net-shaped reinforcing element (8), wherein the reticulated reinforcing element (8) having a major surface (9) of the net-shaped reinforcing element (8) substantially parallel to the surface or at an angle measured in a cross-sectional area orthogonal to the longitudinal extent of the anchor rail (3), from 5 ° to 45 ° the anchor rail back (4) is arranged.

Description

Field of the invention

The invention relates to a reinforced concrete component having at least one anchor rail with a substantially C- or U-shaped cross section comprising an anchor rail back, two anchor rail legs and an anchor rail interior open to the outside of the reinforced concrete component, and with at least one and substantially orthogonal to the anchor rail back of the anchor rail and up or anchors attached in the anchor rail back and away from the anchor rail back.

State of the art and background of innovation

Reinforced concrete components or elements having anchor channels with anchors are known in the art. In this case, the connection between anchor rail and anchor, for example by means of the stripping Taumelniettechnik, as in the reference DE 199 07 475 A1 described, be prepared. All other usual connections between anchor rail and anchor are used in the invention, on the type of connection is not important in the invention.

In substantially plate-shaped reinforced concrete components, which have lateral edge regions, is typically close to the edge region an anchor rail, the longitudinal extent of which is typically (but not necessarily) parallel to the edge region, the anchor rail being located near one of the two major surfaces and the armature facing the opposite major surface. It goes without saying that, furthermore, a reinforcement with reinforcement bars dimensioned and arranged according to customary structural design principles can be set up within the framework of the reinforced concrete component. However, this reinforcement does not extend directly into the edge area, but usually ends in the immediate area of the anchor rail.

In the case of the known reinforced concrete elements known in practice, it is not possible with large transverse forces and small edge distances to take the forces out of the rail body and to anchor or derive them at the rear. The consequence is that the reinforced concrete element in the edge region at high transverse forces (based on the longitudinal extent of the anchor rail or the edge of the reinforced concrete component) can break out. This bothers for obvious reasons.

Technical problem of the invention

The invention is therefore based on the technical problem of specifying a reinforced concrete component, which has an improved carrying capacity, in particular in the edge region and with large transverse forces acting on the anchor rail.

Broad features of the invention and preferred embodiments

To solve this technical problem, the invention teaches that at least one net-shaped reinforcing element is set up, wherein the net-shaped reinforcing element with a main surface of the net-shaped reinforcing element substantially parallel to the surface or at an angle, measured in a cross-sectional area orthogonal to the longitudinal extent of the anchor rail, from 5 ° to 45 ° is arranged to the anchor rail back. In simple terms, the reticular reinforcing element is in any case oriented in the region of the anchor rail either parallel to the anchor rail back or angled against it. The reticular reinforcing element can either be spaced from the anchor rail back, or touch this or abut it, in line contact in the longitudinal direction of the anchor rail or in surface contact.

In principle, the anchor rail or the anchor rails can be arranged at any point in the reinforced concrete component in accordance with the static requirements. In a variant which is advantageous under special aspects, the anchor rail is arranged in an edge region of the reinforced concrete component, the anchor rail extending substantially parallel to the longitudinal extent of the edge region.

With the invention is generally achieved that the carrying capacity of the reinforced concrete component is improved. In particular, high, acting on the edge of the reinforced concrete component or the anchor rail transverse forces are absorbed and derived from the net-shaped reinforcing element. Due to the reticular formation, the reinforcement is made mehraxial and thus contributes to a particularly homogeneous load distribution. The meshes can be braided, welded or otherwise connected to each other. As a mesh form in question: diamond mesh, Langstegmasche, hexagonal mesh, round mesh, square mesh, rectangular mesh, or other special mesh. In one embodiment, a mesh, such as a rectangular mesh, has a short and a long major axis. Then the mesh size in the direction of the short main axis can be in the range of the diameter of the shaft of an anchor. "In the range" means between 50% and 150%, in particular between 90% and 120%, of the shaft diameter. Even if the anchor has an anchor head, nevertheless this anchor head can be inserted through the net-shaped reinforcing element, namely by elastic expansion of a mesh in the direction of the short main axis. Advantage of such a variant is that the anchor and thus the anchor rail defined in the relative position to the net-shaped reinforcing element in any case in a spatial direction of the plane of the net-shaped reinforcing element and / or fixed.

In detail, there are various possibilities for further education.

Typically, the anchor rail has a plurality of anchors attached to the anchor rail back at regular (or even irregular) and predetermined distances, based on the longitudinal extent of the anchor rail. It is also possible that a plurality of transverse anchors is arranged at the anchor rail. The free ends of the anchor rail legs are typically, but not necessarily, on the surface of the steel concrete component so that the anchor rail interior is directly accessible from outside.

In principle, the type of arrangement of the net-shaped reinforcing element in the anchor rail can be arbitrary. It is essential only a fixation of the position of the net-shaped reinforcing element relative to the anchor rail to the hardening of the concrete. Thus, the reticular reinforcing element can be connected directly or via any connecting elements with the anchor rail, for example by means of fixing wires. For reasons of simple on-site production, however, it is advantageous if anchor rail and associated reticulated reinforcing elements are pre-assembled and must be used in the production of reinforced concrete element only in a predetermined position. In this respect, the invention also includes an anchor rail with at least one net-shaped reinforcing element, which is firmly connected to the anchor rail, wherein all preceding and following statements apply analogously. In particular, it is preferred if the reticular reinforcing element is directly connected to the anchor rail and / or the armature, for example, welded. But other connections, for example by means of separate fasteners, are of course possible.

With regard to the arrangement of the anchor rail and consequently of the net-shaped reinforcing element to the edge region of the reinforced concrete component, it is preferred if the lateral distance of the net-shaped reinforcing element to the edge region of the reinforced concrete structure in the range of 0 to 50 cm, in particular 0 to 25 cm. In this case, this distance relates to the distance of the point of the net-shaped reinforcement element closest to the edge region of the reinforced concrete component to the same edge region (and otherwise also relates, for example, to a subsequently described side part of the net-shaped reinforcement element).

The term net-shaped reinforcing element also includes bar grids. With regard to the materials that can be used, the same or different materials can be used independently of each other for anchor rail, armature and reticulated reinforcing element. In the case of high corrosion protection requirements, it may be recommended, for example, if galvanized steel or stainless steel is used for the components mentioned. In particular, the main surface and / or the side surfaces of the net-shaped reinforcing element (see below) can be formed as a metal mesh, in particular a ribbed expanded metal mesh. Also suitable are stretch nets or expanded metal mesh, in particular plastic with fiber or fabric reinforcement. Likewise, textile nets or grids come into question, for example, woven or braided, for example, metal, plastic, glass fiber or carbon fiber.

The main surface of the net-shaped reinforcing element may extend in the longitudinal direction of the anchor rail at least over the length of the anchor rail, preferably extend at least 5%, in particular at least 10%, preferably at least 20%, of the length of the anchor rail beyond each end of the anchor rail out. The extension in said direction may also extend a maximum of 500%, in particular a maximum of 200%, for example a maximum of 100%, or a maximum of 50%, or a maximum of 5%, the length of the anchor rail beyond each end of the anchor rail.

The main surface of the net-shaped reinforcing element may extend at least across the width of the anchor rail in the transverse direction of the anchor rail, preferably by at least 5%, in particular at least 10%, preferably at least 20%, most preferably at least 50% or 100%, of the width of the anchor rail extend each side of the anchor rail. The extension in said direction can also extend a maximum of 1000%, in particular a maximum of 500%, for example a maximum of 100% or a maximum of 50%, of the width of the anchor rail beyond each side of the anchor rail. The extension on the two sides can be symmetrical or asymmetrical. In the asymmetrical case, the extension on one side can be 1.1 to 100 times, in particular 1.5 to 10 times, be the extension on the opposite side.

The major surface of the net-shaped reinforcing element may be substantially planar (apart from the structure due to the net formation) or may have a structure, for example a wave structure.

In a preferred embodiment, the net-shaped reinforcing element comprises, in addition to the main surface, at least one side surface which is opposite the main surface by 10 ° to 170 °, in particular by 30 ° to 150 °, preferably by 70 ° to 110 °, most preferably by 80 ° to 100 °, angled and arranged on a substantially parallel to the longitudinal extent of the anchor rail extending edge of the main surface, in particular angled or bevelled, and points substantially in the direction of the armature. However, the net-shaped reinforcing element may also comprise two side surfaces, which are opposite to the main surface, the same or different, by 10 ° to 170 °, in particular by 30 ° to 150 °, preferably by 70 ° to 110 °, most preferably by 80 ° to 100 ° , Angled and arranged on each one substantially parallel to the longitudinal extent of the anchor rail extending edges of the main surface, in particular angled or bevelled, and are pointing substantially in the direction of the armature. In both cases, preferably a side surface between the anchor rail and the edge of the reinforced concrete component is disposed or facing the edge of the reinforced concrete component. The side surfaces of the reinforcing element can have a depth measured from the major surface that is less than, equal to, or greater than the length of the anchors.

The main surface and / or the side surfaces of the net-shaped reinforcing element may have a mesh area in the range from 5 to 1000 cm ² , in particular from 10 to 100 cm ² , preferably from 20 to 50 cm ² . The mesh surface is defined by the freely tangible surface between the structural elements forming the reticular reinforcing element, the so-called free area. The free area may be in the range of 30% to 98%, in particular 40% to 90%, for example 55 to 80%, in relation to the total area of the net-shaped reinforcing element.

The structural elements of the net-shaped reinforcing element (grid elements) can be (partially) oriented parallel to the longitudinal extent of the anchor rail, or angled thereto, for example, square or rectangular meshes can be oriented so that the longitudinal extent of the anchor rail is parallel to a diagonal of the mesh. Of course, all angles between parallel and diagonal are possible.

It is expedient if an edge or corner of the main surface of the net-shaped reinforcing element running substantially parallel to the anchor rail is substantially parallel to an edge of the web Reinforced concrete component and this preferably spaced.

Finally, the invention relates to a reinforced concrete structure with a reinforced concrete component according to the invention.

Figur 1:

einen ersten Querschnitt eines erfindungsgemäßen Stahlbetonbauteils nahe dem Kantenbereich, und

Figur 2:

eine Aufsicht auf den Querschnitt entlang A-A in Figur 1,

Figur 3:

eine Variante der Kombination Ankerschiene und netzförmiges Bewehrungselelement, und

Figur 4:

eine Aufsicht auf den Querschnitt entlang A-A in Figur 2

In the following, the innovation will be explained in more detail by means of embodiments only representing figures. Show it:

FIG. 1:

a first cross section of a reinforced concrete component according to the invention near the edge region, and

FIG. 2:

a plan view of the cross section along AA in FIG. 1 .

FIG. 3:

a variant of the combination anchor rail and net-shaped reinforcing element, and

FIG. 4:

a plan view of the cross section along AA in FIG. 2

In the FIG. 1 Reinforced concrete component 1 with an anchor rail 3 with a substantially C-shaped cross-section comprising an anchor rail back 4, two anchor rail legs 5a, 5b and an open to the outside of the reinforced concrete component 1 anchor rail interior. 6

Furthermore, are orthogonal to the anchor rail back 4 of the anchor rail 3 and fixed on the anchor rail back 4 and facing away from the anchor rail back away Anchor 7 furnished. Finally, a net-shaped reinforcing element 8 can be seen. The net-shaped reinforcing element 8 is arranged with a main surface 9 of the net-shaped reinforcing element 8 essentially parallel to the surface of the anchor rail back 4 and adjacent thereto. The anchor rail interior 6 is open to an outer surface of the reinforced concrete component 1.

In particular the FIG. 2 can be seen that the main surface 9 of the net-shaped reinforcing element 8 in the longitudinal direction of the anchor rail 3 by at least 5%, in particular at least 10%, preferably at least 20%, the length of the anchor rail 3 extends beyond each end of the anchor rail 3 addition. Furthermore, the main surface 9 of the reticular reinforcing element 8 extends in the transverse direction of the anchor rail 3 by at least 5%, in particular at least 10%, preferably at least 20%, most preferably at least 50% or 100%, of the width of the anchor rail 3 via each side of the anchor rail 3 out.

Of the FIG. 1 In turn, it can be seen that the reticular reinforcing element 8 comprises two side surfaces 10 which are angled relative to the main surface 9 by 80 ° to 100 °, in particular approximately 90 °, and at each of a substantially parallel to the longitudinal extent of the anchor rail 3 edges of the main surface 9 are arranged, in particular angled or beveled, and are pointing in the direction of the armature 7 substantially. The side surfaces 10 of the reinforcing element 8 have a Depth, measured from the main surface 9, which is smaller than the length of the armature 7.

The main surface 9 and or the side surfaces 10 of the net-shaped reinforcing element 8 are integrally formed as a metal mesh, in particular ribbed expanded metal mesh, wherein the side surfaces 10 are formed by means of bends. The main surface 9 and the side surfaces 10 of the net-shaped reinforcing element have a mesh area in the range of 20 to 50 cm ² .

The anchor rail 3 substantially parallel edge or corner of the main surface 9 and the side surfaces 10 of the net-shaped reinforcing element 8 are substantially parallel to an edge 11 of the reinforced concrete component 1 and spaced therefrom.

In the FIG. 1 Furthermore, a fastened in the anchor rail member 11 is shown. With the invention it is ensured that the reinforced concrete component 1 is better able to absorb a transverse force F acting on the component 11 and / or on the anchor rail 3 and consequently an outbreak of the concrete component 1 towards the edge 12 of the concrete component 1 can be prevented or prevented. Such a potential and thus prevents break line B is in the FIG. 1 indicated.

The variant of FIGS. 3 and 4 is different from that of FIGS. 1 and 2 essentially in that the reticulated reinforcing element 8 is a bar grille and has no side surfaces 10 (which of course can also be set up).

Generally and independently of the embodiments, it is possible that the reticulated reinforcement element 8 and the anchor rail backs 4 and / or the armature 7 touch and / or interconnected, non-positively, positively or materially (for example, clip or connector, or by welding).

In the FIG. 3b It can be seen that bars in the region of the anchors 7 can optionally, but not necessarily, be severed, so that the anchors 7 can be arranged in the region of these cuts. The anchor rail 3 may (but need not) be attached to bars, for example by tack welding, non-positive welded connection, medium detachable connections, such as wire connection or clip connection.

Claims (12)

Reinforced concrete component (1)
with at least one anchor rail (3) embedded in concrete with a substantially C- or U-shaped cross section, comprising an anchor rail back (4), two anchor rail legs (5a, 5b) and an anchor rail interior (6) open to the outside of the reinforced concrete component (1),
with at least one and substantially orthogonal to the anchor rail back (4) of the anchor rail (3) and standing on or in the anchor rail back fixed and facing away from the anchor rail back anchor (7), and
with at least one net-shaped reinforcing element (8),
wherein the reticulated reinforcing element (8) with a main surface (9) of the net-shaped reinforcing element (8) substantially parallel to the surface or at an angle measured in a cross-sectional area orthogonal to the longitudinal extent of the anchor rail (3), from 5 ° to 45 ° to the anchor rail back (4 ) is arranged and embedded in the concrete. Reinforced concrete component (1) according to claim 1, wherein the main surface (9) of the reticulated reinforcement element (8) extends in the longitudinal direction of the anchor rail (3) at least over the length of the anchor rail (3), preferably at least 5% each, in particular at least 10 %, preferably at least 20%, of the length of the anchor rail (3) extends beyond each end of the anchor rail (3). Reinforced concrete component (1) according to claim 1 or 2, wherein the main surface (9) of the reticulated reinforcement element (8) extends in the transverse direction of the anchor rail (3) at least over the width of the anchor rail (3), preferably at least 5% in each case at least 10%, preferably at least 20%, most preferably at least 50% or 100%, of the width of the anchor rail (3) extends beyond each side of the anchor rail (3). Reinforced concrete component (1) according to one of claims 1 to 3, wherein on the anchor rail (3) at least 2, or at least 3, 4, 5, 6, 7, 8, 9, 10, or more anchors (7) in regular or irregular Distances in the longitudinal direction of the anchor rail (3) are attached. Reinforced concrete component (1) according to one of claims 1 to 4, wherein the reticulated reinforcing element (8) at least one side surface (10) which with respect to the main surface (9) by 10 ° to 170 °, in particular by 30 ° to 150 °, preferably by 70 ° to 110 °, most preferably by 80 ° to 100 °, angled and at one arranged substantially parallel to the longitudinal extent of the anchor rail (3) extending edge of the main surface (9), in particular angled or bevelled, and points substantially in the direction of the armature (7). Reinforced concrete component (1) according to claim 5, wherein the reticulated reinforcing element (8) comprises two side surfaces (10) opposite to the main surface (9) each, identically or differently, by 10 ° to 170 °, in particular by 30 ° to 150 °, preferably by 70 ° to 110 °, most preferably by 80 ° to 100 °, angled and arranged on each one substantially parallel to the longitudinal extent of the anchor rail (3) extending edges of the main surface (9), in particular angled or bevelled, and are substantially in Direction of the armature (7) point. Reinforced concrete component (1) according to claim 5 or 6, wherein the side surfaces (10) of the reinforcing element (8) have a depth, measured from the main surface (9), which are less than, equal to or greater than the length of the armature (7) , Reinforced concrete component (1) according to one of claims 1 to 7, wherein the main surface (9) of the net-shaped reinforcing element (8) touches the anchor rail back (3) of the anchor rail (3) on the outside, in particular materially or non-positively connected to the anchor rail back. Reinforced concrete component (1) according to one of claims 1 to 7, wherein the main surface (9) and / or the side surfaces (10) of the net-shaped reinforcing element (8) as a metal mesh, in particular rib metal mesh formed. Reinforced concrete component (1) according to one of claims 1 to 8, wherein the main surface (9) and / or the side surfaces (10) of the net-shaped reinforcing element has a mesh area in the range of 5 to 1000 cm ² , in particular 10 to 100 cm ² , preferably 20 to 50 cm ² , have. Reinforced concrete component (1) according to one of claims 1 to 10, wherein an anchor rail (3) substantially parallel edge or corner of the main surface (9) of the reticulated reinforcing element (8) substantially parallel to an edge of the reinforced concrete component (1) and thereto preferably spaced runs. Reinforced concrete structure comprising a reinforced concrete component (1) according to one of claims 1 to 11.

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