DE2231091A1 - DISTRIBUTION ARM - Google Patents

Description

Wn / NS / EK

2-6-1972

DECLARATION

to the patent application of

Van Thiel ¹ s Draadindustrie NV

Seat
Beek en Donk (Netherlands)

concerning:
"Distribution reinforcement".

The invention relates to a solidification as Schwindoder Reinforcement for distribution reinforcement for concrete rings, pipes or similar concrete objects to be produced in a form or formwork, which distribution reinforcement essentially consists of a number in the formwork or form for these concrete objects at a distance from each other, essentially parallel to each other to be arranged rings or stirrups.

Such a ring or ironing sata is often used for consolidation, e.g. in concrete pipe elements, especially suction pipe elements. The risk of breakage during transport and uneven loading is reduced in this way. However, it applies here in general none based on a static Br calculation related to Reinforcement dimensioned for the play of forces.

The installation of such a reinforcement in the formwork is time consuming and consequently expensive. Most of the time the brackets or rings are attached to some stiff Lünga rods. In practice it proves

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to be disadvantageous that when pouring concrete in the border area the rings firmly connected to these longitudinal bars, cavities in the concrete that can also form when the concrete is vibrated or thrown and the pressing action to which the bulk concrete mass is subjected don't go away completely. Such cavities form undesired weakenings in the finished objects.

The purpose of the invention is to eliminate the above-mentioned and similar disadvantages of the previously used reinforcements of the type in question.

For this purpose, a reinforcement of the type mentioned at the outset is characterized according to the invention in that the rings or brackets are connected to one another in such a way to form a structure of flexible and / or somewhat elastic connecting organs that when Stretching or unhooking these organs the rings or stirrups from one State in which they practically abut one another, at least approximately the desired spaced apart position to one another in the Formwork yes take the form. These connecting organs preferably consist of strips, bands or similar organs made of plastic material, such as PVC. These strips, bands or similar connecting organs can be attached to three or more over the circumference each ring or bracket spaced apart points in the stretched or unhooked state of the structure in the longitudinal direction through the Formwork or form protrude.

Due to the supple and somewhat elastic design of the connecting organs, a jogging device starts with a larger number during the pouring process, possibly in the border area the rings formed cavities to fill, since the rings can move somewhat in their position to each other. In particular however, in the final axial compression of the poured concrete body, the cavities disappear completely through the possibility of one Yielding of the structure in the longitudinal direction due to the supple, somewhat elastic design of the connecting organs.

According to an inventive precautionary embodiment, in the supple, somewhat elastic connecting organs at intervals Notches to accommodate bar cross-section parts of the successive

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Rings or brackets can be formed. This will remove the bodies of the rings or bracket along the connecting members in advance at the desired intervals clearly and unambiguously fixed and is the attachment the brackets or rings on the organs of the mouth can be made faster, more convenient and cheaper.

According to the invention, an adhesive can be used for this connection be. This can, for example, consist of adhesive in the contact area between the ring or bracket on the one hand and the connecting member on the other hand, or also from one with the opposite of the connecting member Side glued, there are adhesive strips extending over the rings or brackets. The rings are so in place where they are bit connected to the longitudinal connecting organs, each between on the one hand the connecting organ and on the other hand the adhesive strip recorded. The adhesive strips can be arranged in places on parts of the connecting organs or extend over the full length of the Extending connecting organs.

The connecting organs can also be designed in two parts in the transverse profile be, with parts that mutually engage with snap-in members. In this way the rings or Brackets are fixed between the parts. In this case, receiving cavities for a part of the transverse profile can be in each of the two parts the successive rings or stirrups can be recessed or formed.

According to a further embodiment of the invention the connecting elements can also consist of a metal wire mesh. Wire clamps, such as those made of metal wire, can then be used to fasten the rings or brackets to the connecting elements be.

A reinforcement structure of the type according to the invention that is produced when stretching or hanging in the formwork or form immediately maintains the correct distance to the inner wall of this formwork or form, is accordingly another feature of the invention obtained in that the supple and / or elastic connecting organs on steep slopes with the rings or stirrups cross relative to these rings or Iron according to the protruding, as a spacer to the formwork

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or have projections serving inside the mold. Such projections taper in the cross profile to some extent preferably towards it free end.

So that the reinforcement structure according to the invention in the arrangement can be more conveniently attached or hung on the form or formwork, can according to a further feature of the invention, the flexible connecting members with their ends in the longitudinal direction at least extend past the one outermost ring or bracket. With these projecting connecting organ ends, the violent can then be fastened of these ends, e.g. at the upper edge, or at one end of the form or formwork, can be hung from it, or - if it is a horizontal form or formwork - be stretched towards the opposite end.

The invention also relates to a connecting member made of pliable and / or somewhat elastic metal, such as above all plastic material, e.g. PVC, apparently intended for the formation of a structure of the type described above.

The invention will now be made with reference to the drawing are explained in more detail.

Show it:

Fig. 1 is a schematic perspective view of an embodiment of a reinforcement structure according to the invention in an unhooked State;

FIG. 2 shows a side view of the reinforcement structure according to FIG. 1 in the state in which it has been collapsed into a compressed package; FIG.

Fig. 3 is a vertical longitudinal section of a standing mold for Concrete extension pipes and with the concrete-encased reinforcement structure in them according to the invention in the state compressed into the form after the poured concrete has been vibrated;

4 shows, on a greatly enlarged scale, the fastening point of the Reinforcement ring on a connecting element made of wire mesh;

According to the drawing and especially according to FIGS. 1 and 2, there is one which is used for consolidation, as a shrinkage or distribution reinforcement Reinforcement for concrete pipes essentially consists of a number in the

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2231031

development or shape of these pipes and reinforcing rings 1a-1f to be attached in spaced planes one above the other.

Such rings can have a vertical center-to-center spacing for the purpose of gecfanking of at least 12 cm, whereby a rod diameter of e.g. 10 mm can be used for the ring. It is on Concrete pipes with a clearance of up to 1.4-1.6 m are intended.

The rings are linked to the one in Pig. 1 reproduced Connect the structure by means of three each at equal intervals across the Circumference of the ring spaced apart points, attached to all rings, flexible, somewhat elastic connecting organs 2a-2c. These fastening organs consist of PVC strips or tapes. In this

For example, its cross-section shows a surface of about 20 mm. So are in the example shown strips with a transverse profile of approx. 3 mm 6.5 mm applied. That in Fig. 1 in the unhooked state The structure shown can be brought to the work site in the collapsed state shown in FIG. 2.

The strips lie in short loops outside the stacked reinforcement rings. In this exemplary embodiment, the strips 2a-2c are fastened against the outer circumference of the rings. It is fastened with adhesive strips 3 which are glued to the sides of the strips 2a-2c which are directed towards the center of the rings and extend internally over the rings at the points where the rings intersect with the bands. If desired the strips can be somewhat bent out during their production at those points where they are crossed by the rings, and although with the formation of shallow notches for a part of the ring transverse profile there.

Pig. 3 shows a similarly designed violin on a smaller scale, which is installed in a form generally designated by pos. 4, which consists of an outer jacket 5 »a core 6 and a base plate 7 consists, while a cover 8 is arranged on top of the core 6 and the outer jacket 5 *

The distribution reinforcement rings are also indicated in this exemplary embodiment with the items 1a-1f, the upper one in FIG At the end of the space to be claimed by the poured concrete pipe, a reinforcement

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ring 1g is suspended »which has a larger diameter» because at that end the pipe receives a poured-in socket. In this exemplary embodiment, the suspension strips 2 run on the inside The Rings. At the bottom, the strips 2 end at the lowest ring 1a. With their ends protruding from the uppermost ring 1g, the strips are 2 in the arrangement of the reinforcement structure supplied as a folded package, consisting of the rings 1a-1g with strips 2 on Upper edge of the Hanteis 5 attached. In this embodiment, four strips are used as connecting members, two of which are in the Section 3 can be seen. After the arrangement of the cover 8 on the jacket 5 with core 6, with some of the running around Inner groove was formed in the socket to be molded on the pipe in the concrete, the concrete is shaken, whereupon the concrete is replaced by a not shown Plunger is pressed together as a result of the pushing up of the bottom plate, this bottom plate thus serving as a pressure plate> - "and the cover 8 is supported upwards. In doing so, the groove at the socket end is finally produced and any cavities that may appear disappear have formed under the rings when pouring concrete and in many cases have not yet disappeared even after the concrete has been vibrated, effective from the concrete. This is a consequence of the application of the forged digen, somewhat elastic connecting organs, whereby the structure of the can smoothly follow the reduction in length of the concrete pipe to be produced by upsetting the concrete.

In Fig. 4, a further embodiment of a connecting member is shown as a variant, which here consists of a wire mesh 2 *, of which only a short length part is shown. With 1 a part of a reinforcement ring is designated in this figure and with 9 a wire metal clamp with which the attachment is brought about at the point where the reinforcement ring and wire mesh 2 * - also referred to as Litz wire - cross.

Of course, the invention is not restricted to the exemplary embodiment described above and shown in the drawing, but all sorts of variants are possible within the scope of the invention in this regard. In particular, the reinforcement structure according to the invention also finds useful application in the centrifugal casting of pipes and similar concrete objects.

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Claims (8)

A H S P R TJ C H E 1. ZiiT consolidation serving as shrinkage or distribution reinforcement Reinforcement for concrete rings, pipes or the like in one form concrete objects to be produced or formwork, which distribution reinforcement essentially consists of a number in the formwork or form for these concrete objects at a distance from each other, essentially rings or brackets to be arranged parallel to one another, characterized in that these rings or brackets with one another in such a way as to form one Structure by means of supple and / or somewhat elastic connecting organs are connected that when stretching or unhooking these organs the rings or stirrups from a state in which they are practical abut against each other, at least approximately the desired spaced apart Take up position in relation to one another in the formwork or form. 2. Reinforcement structure according to claim 1, characterized in that said connecting members are made of strips, bands or the like Organs are made of Kunatstaff material, such as toilet. 3. Reinforcement structure according to claim A and / or 2, characterized in that notches for receiving rod cross-profile parts of the successive rings or brackets are formed in the said connecting members at intervals. ' 4. Reinforcement structure according to one or more of the preceding Claims, characterized in that the rings or brackets are attached to the said connecting members with an adhesive. 5. Reinforcement structure according to claim 1, characterized in that said connecting members consist of metal wire mesh. 6. reinforcement structure according to claim 5 »characterized in that the rings or brackets are fastened to said connecting members by means of clamps, such as those made of metal wire. 7. Reinforcement structure according to one or more of the preceding claims, characterized in that the said connecting members at the points where they intersect with the rings or stirrups, . relative to these rings or brackets outwardly directed extensions all have spacers deß structure to the circuit or shape. 3098U / 0243- 2231031 8. Reinforcement structure according to one or more of the preceding claims, characterized in that the said connecting members extend in their longitudinal direction a whole piece on at least the extend past an outermost ring or bracket. 3098U / Q243 Le e r e i t e