DE2306379A1 - CONCRETE RIB, RIB SLAB ELEMENT OD. DGL. FOR RIB COVERS - Google Patents

Description

PATENT ADVOCATE fc 19 967

DR.-ING. WOLFF. H. BARTELS

DSFL-CKEM. DR. RER. MAT. GRAMDES O Q Π Κ 1 7 Q

DR.-ING. HELD, DIPL.-PHYS. WOLFF L OUD 0 I 3 STUTTGART 1, LANGE STRASSE 51

Architect Ignatz Adolf Kirchner in Vienna 13., Gloriettegasse 17 (Austria)

Concrete rib, rib plate element or the like for Rippendeclcen

You invention relates to a concrete rib, ribbed plate element or the like. with pre-stressed steel wire reinforcement for hip ceilings, preferably »with lost formwork arches for the in-situ concrete, which is produced using the vibration-sliding process and in which several steel wires spaced apart from one another are used as load-bearing reinforcement in the rib crown and at least one steel wire in the rib crown are arranged as transport reinforcement, which are connected to one another by essentially ziek-aack-extending brackets. The known elements of this type are the Tips of the zigzag-running stirrups on one side « cranked horizontally and hang with the upper crankings on the transport reinforcement wire and the lower crankings grip the supporting reinforcement wires. These well-known Brackets can thus be attached to the side of the pre-tensioned reinforcement wires.

In another known embodiment

309836 / 0A06

Sranspört- lind comprises supporting reinforcement of dea loops of a swirl · tes, the drawn apart so that they _s siad sen substantially Ziek-Saek-Forii aufwei. Seid® embodiments have disadvantages. They are only suitable for slender ribs with narrow feet, where the supporting reinforcement wires must have a small distance from one another so that the zig-zag stirrups achieve the required concrete cover, "Hips with broad feet and slender crowns cannot be reinforced in the familiar way. In addition, during the Eüttel sliding process, the brackets are dragged along, so that their exact position is not guaranteed. When using wire loops, the wire bundle must be pushed onto the reinforcement wires before tensioning them, which complicates the manufacture of the reinforcement.

The invention aims to eliminate the Ifaeht © il @. Her idea is sugrunde @ swei Ziek-Zaek bracket wires to use, of which the one © only the cantilever reinforcement wires summarizes and the finder® the Yerbisdumg between the reinforcement and the lippeakroae in it Transportbewehnassg produces »In di @ s @ way is it is possible to produce slim © hips with a "wide EippenfuS" and at all points the © required © Betoni @ ekinig to be achieved.

According to the invention, this is achieved by the fact that two brackets "bildend® Bräkt ©" are provided, of which the "© ine" is hung over the Sraasportts defense wire in the Bippeakrom © wk & suit his bridle bar alternately on the left and right up to τηϊιϊθε ¹ file deepest layer of the lewehrungsdrMht © reiekt ώβα der @ m & ®t® ± m designed in the same way ra, «i the Sragbewehriaag ®"& @ a Tand laterally, whereby oil © nnter @ 3a ZiloIdsb. der Br © i @ eIreMgel with each other align iosf ^ beiie Zisk- ^ aek-Drälit® Pleaseis Hagel or the like in their "ag © secured siaä ₉ di © smf &&. Eiteren spikes to lie © - waae di © deepest © Say © OCE ^c £ ^ Tmgbe ®h angsdrähte under cross

309838 / 04GS

In the drawing, the subject of the invention is shown in an exemplary embodiment. Show it

1 shows a concrete rib element of a ribbed ceiling and Tig.2 a ribbed concrete slab element from another ribbed ceiling each in cross section and the

Fig. 3 and 4- the pre-tensioned reinforcement wires including zigzag stirrups in elevation and ground plan.

A rib element 1 has a wide rib foot 2, which merges into a slender rib 3, which in FIG corresponding height on both sides has a widening as a support for lost formwork arches 5. The broadening tapers at the rib foot to save material and weight. There are distribution bars on the crown of the ribs 6 placed, in which Ver ^ tärkimgsbügel 7 are hung. After the in-situ concrete 8 has been applied, the ribbed ceiling is completed except for the lower level.

The support reinforcement in the rib base is made up of eight prestressed, preferably nubbed reinforcement wires 9 educated. This bind by means of a zigzag bracket forming Wire 10 summarized, the bow prongs 11 are alternately left and right of the reinforcement and reach under the lowest supporting reinforcement 9 consisting of four wires.

To connect the transport reinforcement wire 12 to the reinforcement wires 9, a reinforcement wire 13 is provided, which is hung on transport reinforcement wire 12 and its lateral triangular stirrups alternately on the left and protrude down to the right. The lower prongs 14 of these brackets also reach under the deepest layer of the reinforcing wires 9 and align with the prongs 11 of the wire 10. Hail 15 is inserted at these points, which rest on the prongs and come to rest below the lower layer of the wire 9. In this way

30983S / OA05

the position of the bracket is secured and slipping is impossible.

After tensioning the reinforcement wires 9 and 12 the bracket formed by the .Draht 10 between the top one Reinforcing wire 9 and the middle layer of the same pushed sideways so that the wire TO rider-like rests on the middle layer of the reinforcing wires 9. Then the wire 13 is suspended from the reinforcement wire 12, the prongs of the stirrups are aligned and the nails 15 are inserted. The reinforcement is now complete. The invention allows the arrangement of the reinforcing wires 9 and 12 large leeway, for example less than eight Reinforcing wires 9 and a plurality of reinforcing wires 12 are provided. The reinforcing wires 9 can be in one or in two or more layers can be arranged.

In the case of ribbed slab elements, like a part of such is shown in Pig.2, the with the One-piece plate 16 up to 2 m and ribs be more wide. The ribs are preferably arranged at a distance of 33 1/3 cm. To reinforce the Plate a structural steel grid 17 is provided on the mesh size the division of the bracket wires 10 and 13 must take into account. .

The advantage of the invention is not only that there is no hindrance to the Rütteigleitvorganges when concreting takes place, but that the reinforcement exactly according to the static requirements can take place.

309836/0405

Claims (1)

Claim, ν Concrete ribs ^, ribbed plate element or the like. with pre-tensioned steel wire reinforcement for ribbed ceilings, preferably with permanent formwork arches for in-situ concrete, which is produced in the Rütteigleitverfahren and in which the rib foot has several spacings from one another Steel wires are used as reinforcement and at least one steel wire is arranged in the rib crown as transport reinforcement are, which among each other by essentially zigzag running Brackets are connected, characterized in that two wires forming the zigzag brackets (10, 13) are provided, one of which is hung over the transport reinforcement wire (12) in the rib crown (3) is and with its triangular stirrups alternately left and right to below the deepest layer of the reinforcement wires (9) is enough and the other is designed in the same way and includes the support reinforcement (9) at the top and sides, wherein the lower prongs (11,14) of the triangular stirrups are in alignment and both zigzag wires by means of nails (15) or the like are secured in their position on the lower Lay the prongs and reach under the deepest layer of the reinforcement wires.