DE2063438B

DE2063438B - Butt joint of reinforcing bars for concrete

Info

Publication number: DE2063438B
Authority: DE
Inventors: Fritz Dr.-Ing.; Andrä Wolfhart Dr.-Ing.; Bauer Willi; 7000 Stuttgart Leonhardt
Original assignee: NOE-Schaltechnik Georg Meyer-Keller KG, 7334 Süssen

Description

Die Erfindung wird an Hand eines in der Zeich- axialer Richtung in größerem Abstand die Längs-The invention is based on a in the drawing axial direction at a greater distance the longitudinal

nung dargestellten Ausführungsbeispiels näher er- stäbe 4 umgeben. Die Flachringe 5 bestehen *weck-In the embodiment shown in the illustration, first surrounds 4. The flat rings 5 consist of * wake-up

läutert Es zeigt mäßigerweise aus weichem verformbarem Blech.It shows moderately made of soft malleable sheet metal.

Fig. 1 eine Ansicht eines Stumpfstoßes etwa in In Draufsicht haben die Flachringe5 eine etwaFig. 1 is a view of a butt joint approximately in plan view, the flat rings 5 have an approximately

natürlicher Größe, 5 rechteckige Form mit abgerundeten Ecken, in denenNatural size, 5 rectangular shape with rounded corners in which

Fig. 2 einen Schnitt gemäß der Linie Π-Π in die Längsstäbe4 liegen. An zwei einander gegen-Fig. 2 is a section along the line Π-Π in the longitudinal bars4. At two opposite

Fig. 1. überliegenden Seiten tragen die Flachringe5 bügel-Fig. 1. Overlying sides carry the flat rings5 iron-on

Bei Stahlbetonstützen ergibt sich die Notwendig- artige Ausbauchungen 6. Die Abmessungen sind so keit, bauabschnittsweise die Bewehrungsstäbe 1 und 2, getroffen, daß für das leichte Aufschieben des Verdie in der Regel gerippt sind, miteinander zu ver- io bindungskörpers auf den Bewehrungsstab 2 zwischen binden, damit der Kraftfluß in vertikaler Richtung dem Bewehrungsstab 2 und den Längsstäben 4 in nicht unterbrochen ist In einfacher Weise werden radialer Richtung genügend Spiel vorhanden ist.
Harn die* Tipwif>VininoceföKi> ι „~a <> „r* ;l·™,» o*:-- Mv.~l·. A*m AufcptTon Hpc Rp.welininesstabes 1 wirrl sehen aufeinandergesetzt, wie es in F i g. 1 ersieht- die Fuge 7 zwischen dem oberen Bewehrungsstab 1 Hch ist. Gezeigt sind hier nur zwei einander gegen- 15 und dem unteren Bewehrungsstab 2 etwa mittig von überliegende Bewehrungsstäbe 1 und 2, häufig wird dem Verbindungskörper 3 üherdeckt. Die bügeles sich um einen ganzen Bewehrungskorb handeln, artigen Ausbauchungen 6 werden mit einer Zange bei dem dann die Stirnseiten der einzelnen Be- fest zusammengedrückt, so daß sich der Umfang wehrungsstäbe auf die Stirnseiten der Bewehmngs- verkleinert und die Längsstäbe 4 fest gegen die Bestäbe des darunter angeordneten Bewehrungskorbes 20 νwehrungsstäbe 1 und 2 gepreßt werden. Beim Füllen aufgesetzt sind. Vor dem Aufsetzen des oberen Be- der Schalung mit Beton gelangt dieser auch im Bewehrungsstabes 1 auf den unteren Bewehrungsstab 2 reich des Stumpfstoßes unmittelbar an die Bewird auf letzteren ein Verbindungskörper 3 aufge- wehrungsstäbe 1 und 2, denn der Verbindungsschoben, der aus in der Regel ebenfalls gerippten körper 3 läßt durch seinen Aufbau praktisch den Längsstäben 4 und aus aus Flachringen 5 gebildeten 25 ungehinderten Zutritt von Beton zu den Bewehrungs-Gliedern besteht. Der unterste Flachring 5 wird etwas stäben 1 und 2 zu, so daß über den Beton und die verformt, damit der Verbindungskörper 3 ange- zusätzliche Bewehrung durch den Verbindungskiemmt ist und nicht abrutscht. Zweckmäßig sind körper 3 ein inniger Verband mit hoher Festigkeit vier Längsstäbe 4 über den Umfang gleichmäßig ver- entsteht, der Druck- und Zugbelastungen einwandteilt und mit den Flachringen 5 verschweißt, die in 30 frei aufnehmen kann.Reinforced concrete supports have the necessary bulges 6. The dimensions are made in such a way that reinforcing bars 1 and 2 are designed in such a way that connecting bodies on reinforcing bar 2 are usually ribbed so that they can be easily pushed on tie so that the power flow in the vertical direction of the reinforcing bar 2 and the longitudinal bars 4 is not interrupted. In a simple manner, sufficient play is available in the radial direction.
Urn die * Tipwif>VininoceföKi> ι "~ a <>" r *; l · ™, »o *: - Mv. ~ L ·. A * m AufcptTon Hpc Rp.welininesstabes 1 wirrl see one on top of the other, as shown in FIG. 1 sees- the joint 7 between the upper reinforcing bar 1 is high. Shown here are only two opposite one another and the lower reinforcing rod 2 approximately in the middle of the reinforcing rods 1 and 2 lying above; the connecting body 3 is often covered. The stirrups are a whole reinforcement cage, like bulges 6 are pressed together with a pair of pliers in which the front sides of the individual fasteners are then pressed together so that the circumference of the reinforcement bars is reduced to the front sides of the reinforcement bars and the longitudinal bars 4 firmly against the rods of the Reinforcement cage 20 arranged underneath, reinforcing bars 1 and 2 are pressed. Are put on when filling. Before placing the upper formwork with concrete, it also reaches the reinforcement bar 1 on the lower reinforcement bar 2, near the butt joint, directly to the reinforcement bars 1 and 2, because the connecting body 3 is reinforced with reinforcement bars 1 and 2 also ribbed body 3 can be practically the longitudinal rods 4 and from flat rings 5 formed from 25 unimpeded access of concrete to the reinforcement members. The lowermost flat ring 5 is slightly rods 1 and 2 so that it is deformed over the concrete and so that the connecting body 3 is additional reinforcement through the connecting clamp and does not slip off. Expediently, body 3 is an intimate association with high strength, four longitudinal rods 4 are uniformly created over the circumference, which divides pressure and tensile loads and welds them to the flat rings 5, which can freely accommodate in 30.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

areas with supports or the like. Is. Also, the concrete cannot immediately enclose the reinforcing bars, since it only enters the space between the connecting body and the reinforcing bars

1. Butt joint of reinforcing bars for 5 can penetrate poorly, especially if granular concrete, especially for reinforced concrete columns, is present in the concrete with a size of up to 30 mm,
There are butt joints of reinforcing bars with members that are known with axial for concrete, in which the spaces are arranged to penetrate and the concrete press into the space between the binding bodies against the rod ends, io reinforcing bars and The connecting body is characterized in that the connecting body itself is provided with openings, the connecting body (3) consists of several at a distance, but these can only have a limited number of deformable members, so that the concrete with grain sizes up to t- iacnnngen (S) mn Dugeianigen Ausoaucnun- to ju mm nicni einwanuirci in ucn iwisLiicnraum gen (6) uir-closed longitudinal rods (4). 15 can reach. This is particularly a

2. Butt joint according to claim 1, characterized in that the concrete is not properly compacted, that the flat rings (5) made of sheet metal ensures that there is insufficient strength for exist and welded to the longitudinal rods (4) tensile and compressive loads can be achieved and are. in remaining cavities there is a risk of corrosion bc-

3. Butt joint according to claim 1 or 2, there is 20. It can also be hit by hitting on characterized in that the flat rings (5) in a connecting body to the reinforcement plan view an approximately quadrangular shape with a wedge pressing the rods of the connecting body slightly have rounded corners that slip in the corners, since he is not at the beginning of the assembly Longitudinal rods (4) and clamped in the middle between work on one rod end two longitudinal bars (4) on two opposite one another. Also, the wedges are items that are lightweight Overlying sides the stirrup-like appearance can be lost.

bulges (6) arranged '• ■ nd. The invention is therefore based on the object.

4. butt joint according to one of claims 1, a connecting body for the butt joint of to 3, characterized in that the flat reinforcing bars can be created with a simple structure, rings (5) in the axial direction at a distance 30 with which the reinforcing bars are mutually spaced are arranged, the larger than you can be bound that high strength of the mean ring diameter is. Concrete construction, even with alternating pressure

and tensile stress, is achieved and which is easy to manufacture and easy to assemble.
The invention seeks to achieve this object

before that the connecting body consists of several im

Spaced, deformable flat rings of links with bow-like bulges enclosed longitudinal bars. By

The invention relates to a butt joint of shapes of the stirrup-like bulges of the flat reinforcing bars for concrete, especially for steel rings, e.g. B. by means of pliers, can easily be a concrete support, earth with one of the rod ends enclose reducing the diameter of the flat rings Connecting body with links that aim with axial, so that the longitudinal rods of the connecting body Interstices are arranged and the advertising bodies are pressed against the ends of the reinforcing bars press against the rod ends. 45 den. This makes it easy to assemble

In a known butt joint of this type there is give. Because the links are axially spaced the connecting body are arranged from a cross-section, the concrete can also be in the area semicircular elongated shell, one of which is the butt joint the reinforcing bars completely Edge is bent outwards and threadedly enclose, and the concrete can properly has bores, while the other edge 50 is compressed, so that a sufficient Festigparallel has slots lying to the longitudinal axis. Is guaranteed. Furthermore, every danger is the these slots grip the bent ends avoiding corrosion and chipping of concrete, Links that consist of sheet metal strips and are easily bent even when the butt joint is near the outside are. At the other end, the sheet metal surfaces are embedded in the concrete. Due to the strip on openings, through the hexagonal screws 55 of simple construction, the stump according to the invention is the threaded holes of the connecting body butt of reinforcing bars for concrete also easily intervention. This known butt joint can be produced by Be.

Reinforcement bars for concrete are, on the one hand, in the main. The flat rings are advantageously made of

Position quite complex, as slots and threaded sheet metal and are welded to the longitudinal rods. In bores are made in the connecting body 60 in a particularly advantageous manner, the flat must and on the other hand, only under large time rings in plan view an approximately square shape with effort to assemble, as each individual screw has rounded corners, with the lengthways awkward in the corners must be screwed tight. In addition, rods and in the middle between two longitudinal rods the concrete adheres to the smooth outer surfaces of the bow-like bulges on two of each other made of sheet steel connecting body only 65 opposite sides are arranged. the sohr bad, so that there is a risk of flaking flat rings are useful in the axial direction the concrete cover exists, especially if arranged at a distance from one another which is greater the connecting body is closer to outer than its mean ring diameter.