DE8712749U1 - Reinforcement cage - Google Patents

Abstract

1. Prefabricated reinforcing cage for producing a connection between the reinforcements of a floor cover plate (P) and a wall (T) or between two walls, characterized in that it comprises a plurality of long, parallel, equidistantly spaced transverse bars (1), connected together at both ends by in each case one longitudinal bar (2), as well as short transverse bars (3) running at least approximately centrally between in each case two adjacent long transverse bars and parallel thereto and which extend at least over the centre (m) of the length of the long transverse bars (1) to approximately one of the two end longitudinal bars (2), the central area of the long transverse bars (1) and the short transverse bars (3) located there are interconnected by three parallel longitudinal bars (4, 5, 6) and that the long transverse bars (1) are bent down by 90 degrees approximately centrally between two (4, 5) of the three longitudinal bars in the central area (m) and the free ends (3') of the short bars (3) are bent down by 90 degrees in a parallel plane over the legs (1") of the long transverse bars (1).

Description

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ARMLIFT BASKET

In the technical world, reinforcement nets are understood not only as flat structures, but also more generally as three-dimensional structures formed from solid nets by bending. For the sake of clarity

( ), however, the equally common term reinforcement cage is used. Traditionally, such a reinforcement cage is often formed on site at the installation location and bound with special wires. This is extremely labor-intensive* but has the advantage that the reinforcement cage can easily be adapted to the specific building conditions. With the large number of different applications of reinforcement cages, certain

( ^ manufactured reinforcement cages must be extremely carefully thought out in order to be as versatile as possible despite their predetermined shape, which therefore limits the application.

In this case, it is a prefabricated reinforcement cage for creating a connection between the reinforcements of a floor* ceiling slab and a wall. Up to now, such connections have not been created from a prefabricated reinforcement cage.

Today, such a connection is made using different methods. * One method involves pulling the reinforcing bars of the flat mesh beyond the angle between the wall to be built and the floor-ceiling slab transition and bending them by 90° at the right place. This inevitably requires a two-stage process when pouring the concrete. The formwork can therefore only be built step by step. Bending the reinforcing bars is laborious and often inaccurate. The second method involves using prefabricated reinforcing cages. Reinforcing bars bent at right angles and connected to one another in the corner area with a cross bar can be used. Such reinforcing nets are known from FR-A 24 22 784 or EU-A 0 136 283. The

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by binding with surface tension of the wall and/or the floor; ceiling panel. The disadvantage of that"]?

The solution is primarily to be seen in the fact that the iron layer is relieved of relatively little work, especially when creating floors and ceilings.

Under-reinforcement, the described reinforcement

p * &bull; network little help.

In this respect, a reinforcement cage according to CH-A 642 131 is considerably better. This reinforcement cage consists of a number of identical, parallel, hairpin-shaped brackets. The brackets are permanently connected to one another by at least three rods lying in two planes arranged at right angles to one another. To create a transition from a wall to a floor or ceiling slab, two of these reinforcement cages are inserted into one another perpendicular to one another. The vertical reinforcement cage stands on the narrow

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Of course, the vertical baskets

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with the horizontally positioned baskets using the well-known binding wires. However, in these corner areas in particular, access is extremely poor, making binding difficult.

However, the element is only of limited use when used to create reinforcements for a connection between a floor and ceiling slab and a wall or two walls. If, for example, the wall is only reinforced in one layer, connection problems arise.

It is therefore the object of the present invention to provide a prefabricated reinforcement cage for creating a connection between the reinforcements of a floor/ceiling slab and a wall, in which the disadvantages described above are eliminated.
This task is solved by a prefabricated reinforcement cage which is characterized by the fact that it consists of a number of long, parallel cross bars arranged at equal distances, which are connected to each other at both ends by a longitudinal bar, as well as at least approximately in the middle between each two adjacent long cross bars parallel to these

short cross bars extending from at least over the middle of the length of the long cross bars to approximately one of the two terminal longitudinal bars, wherein the central region of the long cross bars and the short cross bars located there are connected to one another by three parallel longitudinal bars, and that the long cross bars are bent by 90° approximately in the middle between two of the three longitudinal bars running in the central ( ) region and the free ends of the short bars are also bent by 90° into a parallel plane over the legs of the long cross bars.

When installed, the short cross bars are in the compression area of the reinforced concrete structures. Therefore, the short cross bars can have a diameter that is up to 50% smaller than the long cross bars. This means that up to a third of the total iron weight can be saved compared to conventional reinforcement nets.

In the attached drawings, a preferred embodiment of the subject matter of the invention is shown in itself and in use.

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It shows:

Figure 1 shows the view of the bent reinforcement net for the production of the reinforcement cage according to the invention;
Figure 2 shows the reinforcement cage according to the invention in

the side view.
( ) Figures 3 and 4 shown schematically.

From the view of the bent reinforcement net according to Figure 1, all the wires required to manufacture the net, their relative arrangement to one another and their lengths can be seen. A large number of long, parallel crossbars 1, twenty in the example shown, are laid across the longitudinal direction. The length of the long crossbars, which are arranged at regular intervals, is approximately 1.75 m. The ends of the long crossbars are connected to one another on both sides by a longitudinal bar 2. A short crossbar 3 is laid in the middle between each two adjacent long crossbars 1. These short crossbars extend from above the middle of the long crossbars 1 to close to one of the two

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terminal longitudinal bars 2. One variant provides that

f the short cross bars 33 from near the end

e longitudinal bars 2 on one side, up to close to the opposite longitudinal bar, as shown in dashed lines. If one considers the line m running in the longitudinal direction, on which the centers of all long

! Crossbars are located, then with respect to this center line three relatively close to each other, one below the other

j ^; J parallel longitudinal bars 4, 5 and 6 are arranged. Two of these

■ Longitudinal bars 4.5 run at equal distances on each side of the fictitious center line m at the same distance from it. A third longitudinal bar runs at the same distance as the two aforementioned longitudinal bars 4.5 from the

j Center line m to the longitudinal bar 5 and cross the short

! Cross bars 3 and the long cross bars 1. On all

Where two bars cross, they are connected by spot welding.
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The flat net shown in Figure 1 is finally bent by two bends into the shape shown in the side view in Figure 2 to form the reinforcement cage. In a first bend, all cross bars are bent at right angles around the center line m.

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iy^i*. In this way, the long crossbars 1 are formed into the two long legs I ¹ and I ^H running perpendicular to each other, and if necessary the short crossbars 33 are bent once. In a second bend around a straight line b running in the longitudinal direction, the short crossbars 3 and 33 are now bent by approximately 90° from the plane in which the legs I ¹ of the long crossbars 1 run, so that the { ' legs 3' of the short crossbars 3 and 33 run at least approximately parallel to the other legs 1" of the long crossbars 1. The bent I

Legs 1" and 3' form a U Wit f in side view

legs of different lengths, I

The short cross bars 3, for example, have a diameter of approx. f

40% smaller diameter than the long cross bars 1.

This can save a considerable amount of iron \

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^ If the legs 1" and 3' were to be the same

Crossbar, this could not be achieved. g

Figures 3 and 4 show schematically two

Examples of applications for the reinforcement cages according to the invention are shown. Figure 3 shows a transition from

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a floor = ceiling plate P to a retaining wall M* Both components are provided with a two-layer reinforcement » The reinforcement basket is placed on the usual, grid-shaped flat reinforcement net 10, which is drawn in a straight line like all other reinforcement iron not belonging to the reinforcement basket, so that the legs 3' and 1" each lying in two parallel planes are directed vertically upwards

( ■* are. The connection between the already laid, flat reinforcement grid 10 and the reinforcement cage can now be made easily accessible, outside the actual corner area, by means of binding wires on the legs ¹¹ that will lie in the floor slab and the reinforcement rod 2 attached to it. The second, upper flat reinforcement net 11 can then be pushed over the free ends of the relatively short legs 3' of the short cross bars 3, whereby a

v additional binding with wires to the reinforcement cage is often unnecessary. The two flat reinforcement nets 12,13 of the retaining wall M can now also simply be placed in the reinforcement cage and connected to the legs 1" and 3 ^1. This again takes place outside the actual corner area. Of course, the

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Reinforcing mesh 12,13 can also be attached to both or just one of the outer side of the two U-forming legs 1"/ 3'. If the connection is between a floor/ceiling panel P and a partition wall T/, the reinforcement cage can also be used rotated by 90°. However, all the advantages of easy handling described above are retained. The cage can be placed back on the lower flat

( ) Reinforcing mesh 10 is placed and connected to the now lower/longer leg 1". The reinforcing mesh 14 can then be pushed over the free ends of the short leg 3' and connected to the second, long, now standing leg ^{1 1.} Finally, the upper reinforcing mesh 11 of the floor-ceiling panel P is inserted again and this time connected to the shorter, horizontally lying, short leg 3 ¹ .
Finally, it should also be noted that the

'' Longitudinal bars 2,4,5 and 6 are each extended beyond the outermost long cross bars 1 by approximately the distance between two adjacent long cross bars. This means that the individual baskets can also be easily plugged together or pushed into one another in the longitudinal direction.

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Claims (5)

&bull;&bgr; ■ ECGO AG ·"" '*·· 6 Further ■ CLAIMS 1. Prefabricated reinforcement cage for creating a connection between the reinforcements of a floor-ceiling slab (P) and a wall (T) or between two walls, characterized in that it consists of a number of long, parallel, equally spaced crossbars (1), which are connected to one another at both ends by a longitudinal bar (2), and of short crossbars (3) running parallel to each other at least approximately in the middle between two adjacent long crossbars, which extend from at least above the middle (ni) of the Length of the long cross bars (3) to approximately one ) of the two end longitudinal bars (2), whereby the central area of the long cross bars (1) and the short cross bars (3) located there are connected to one another by three parallel longitudinal bars (4,5,6) ege 6/CH I Ii Mil» &igr; * · · * i II I) · IiIIIt * i I lllflli &bull; * · Ml H are connected, and that the long cross bars (1) are bent by 90° approximately midway between two (4,5) of the three longitudinal bars running in the central region (m) and the free ends (3 ¹ ) of the short bars (3) are also bent by 90° into a parallel plane over the legs (1") of the long cross bars (1). 2. Reinforcing cage according to claim 1, characterized in that the short transverse bars (3) extend only straight from the central region of the long transverse bars (1) to approximately the longitudinal bar (2) located beyond the central region. 3. Reinforcing cage according to claim 1, characterized in that the short cross bars (3) extend from approximately one longitudinal bar (2) across the central region to approximately the opposite longitudinal bar (2), and that the free ends (3', 3") on both sides of the central region are bent at 90 degrees to one another, with one of the free ends (3 ¹ ) extending in a parallel plane over the legs (I ¹ ) of the long cross bars, the other in the plane of the same legs Il IIIII ^&ohacgr; &Igr; I III!» ft ft &igr;&igr;&igr; I I it ti ti I f I ■ &igr;&igr;&igr;&igr; i * * II * tlltffl (I ¹ ) turned off· 4. Reinforcing cage according to claim Ij, characterized in that the short cross bars (3) have a diameter that is up to 50% smaller than the long cross bars (1). 5. Reinforcement cage according to claim 1/ characterized in that the longitudinal bars (2) are spaced approximately by the distance | between two adjacent long cross bars (1) over | the two outermost long Quei-i-tabes of the Armie- | extension basket. |