DE60208113T2 - Dome of a reinforcement terminal box - Google Patents

Abstract

The supporting box, made from a pliable material such as water-resistant cardboard, plastic or synthetic material, consists of a rear surface with holes (20) for the reinforcing rods (44), side walls and a front surface formed by inward-folding flaps (6, 7). The rear wall of the box has a central lengthwise fold (15) forming a ridge between the side walls and having recesses (22) linking the holes (20). A wire inside the fold makes it easier to cut along the ridge to remove the sections of the box after use.

Description

Technical area

The The invention relates to the field of public works and the construction technique. It concerns more specifically new structures for one Box of a reinforcement terminal box. One will remember that one Reinforcement connection box [also called storage box] a holding device for reinforcements for the connection between two structural elements made of reinforced concrete, which includes those sections of the reinforcements, the visible part of which is intended to be embedded in the concrete of one of the components.

State of the art

known manner be when building a building, which has several elements (walls or Sheets) made of reinforced concrete, at the top or side Ends of these elements arranged metallic reinforcements, intended to ensure a mechanical connection with adjacent elements. These reinforcements have a part that is in a first element is embedded in reinforced concrete, and a second part, which is in the is embedded adjacent element.

known manner have to Reinforcements during casting of the concrete are held in place and are in general partly inside a "rebar connection box" called device which consists of a box, which the bent back Includes ends of the reinforcements while leaving visible the part of the reinforcements embedded in the concrete becomes. After casting of concrete the reinforcement junction box is removed around the ends to visualize the reinforcements isolated from the concrete. The bent back Ends of the reinforcements are then bent apart and afterwards embedded in the interior of the adjacent element.

Numerous structures and geometries of the box have already been proposed, especially those in the Scriptures FR 2 796 095 . described

• • eine Rückwand, die mit Öffnungen für den Durchtritt von Verbindungsbewehrungen durchbohrt ist und dazu bestimmt ist, in Kontakt mit dem Beton zu kommen;
• • eine Vorderwand, welche zwei Klappen umfaßt, die in Richtung zueinander umgeschlagen sind;
• • zwei Seitenwände, welche die Vorder- und Rückwände verbinden.

The box of the rebar terminal box described in this document is made by folding a sheet of foldable material. It includes:

• • a back wall pierced with openings for the passage of connecting reinforcements and designed to come into contact with the concrete;
• A front wall comprising two flaps turned towards each other;
• • two side walls connecting the front and rear walls.

This Box is made of cellular polypropylene, whose channels are parallel to the largest direction of the box.

If the user wants to remove the reinforcement junction box, so he has to first Remove the adhesive that holds the two flaps of the front panel connects, then he has to the back wall of the box with a cutting tool. Now disabled the presence of the bent ends of the reinforcements inside of the box the passage of the cutting tool for cutting the back wall the box serves. It follows that the user in general forced to pull hard on the box to rip it out, which make the shuttering process complex and risky. In addition, this increases the Waste.

Around to allow the arrangement of the reinforcements inside the box are also in the back wall drilled passages connected by a transverse slot, which of the middle part of the reinforcements in their installation in the box is penetrated. The presence of this transverse slot, the almost over the entire width of the box runs, poses a risk of leakage Under the influence of the pressure of the concrete this can transversely extending slot namely tend to open easily and to let the concrete stalk penetrate.

The in the aforementioned The described reinforcement connections also have a restriction, consisting in their limited resistance against the pressure exerted by the concrete during casting.

The The aim of the present invention is thus, this various To remedy disadvantages by providing a box for a reinforcement connection box suggests which has a strong rigidity and yet extremely simple is removable, whose sealing properties are better than the analog solutions of the prior art.

Disclosure of the invention

• • eine Rückwand, die mit Öffnungen für den Durchtritt von Verbindungsbewehrungen durchbohrt ist und dazu bestimmt ist, in Kontakt mit dem Beton zu kommen;
• • eine Vorderwand, welche zwei Klappen umfaßt, die in Richtung zueinander umgeschlagen sind; und
• • zwei Seitenwände, welche die Vorder und Rückwände verbinden.

The invention thus relates to a removable box of a reinforcement terminal box for placing reinforcements for connection between two concrete elements. This removable box is made by folding a sheet of foldable material. This box includes:

• • a back wall pierced with openings for the passage of connecting reinforcements and designed to come into contact with the concrete;
• A front wall comprising two flaps, which are turned towards each other; and
• • two side walls connecting the front and rear walls.

According to the invention this is Removable box characterized in that a rear wall has an envelope, which is directed into the interior of the box. This envelope has an edge which can be cut, which in the Area of the front wall between the flaps of the latter arranged is. After cutting, this edge is destined to remove this To facilitate the box.

Different said the back wall of the box so formed that a part of the forming material sheet is located near the front wall. In this way, the user when removing the box, the rear wall disassemble the box by cutting the distinctive envelope, which is not in contact with the concrete, but on the contrary on the side of the front wall of the box and thus is easily accessible.

He is thus in no case due to the presence of the metallic Reinforcements hindered because the cutting process is performed before the reinforcements.

It also puts the presence of this characterizing envelope is a longitudinal reinforcement, which between the front and back walls of the Box is present. The rigidity of the box and therefore his resistance was against the pressure exerted by the concrete during casting is thus increased.

advantageously, The characteristic envelope can be recesses in the area of its Edge have. In this way, the amount of for the removal process to cut material only on the zones of existence of the foldable sheet of material at the edge of the characterizing envelope limited.

The The efforts required to disassemble the box are thus unique the cutting of located between the recesses of the edge Restricted zones.

In the practice can These recesses have a certain width or on a simple Slot be reduced.

According to one further feature of the invention, the envelope may have elongated holes, which the openings for the Pass each connect a metallic reinforcement. Different these slots are said to form Recesses in the characteristic envelope, in which the middle Inserted parts of the reinforcements can be without changing the position of the envelope inside the box. These in the envelope executed slots are thus particularly advantageous to the arrangement of the reinforcements in the reinforcement connection box to facilitate. They allow that the reinforcements the back wall penetrate the box without excessive deformation of the envelope cause.

advantageously, can in practice, the recesses made in the area of the edge of the envelope with the oblong holes be connected, which the passage openings of the metallic reinforcements connect. In this case, there are those on the edge Zones of material to be cut between the positions of each Reinforcement. These sections can be cut up on material very small dimensions are reduced, which are sufficient about the accidental tearing to avoid the material plate forming the box before folding, but are also sufficiently reduced to facilitate the cutting operations.

According to one Another feature of the invention, the box in the interior of the envelope, located in the area of the edge of this latter Include thread, which is intended to rupture the Envelope to facilitate the removal of the reinforcement connection box.

Different said the box is equipped with a stable thread, which metallic or synthetic or generally sufficient is firm to the tearing of the material forming the box when the user makes a sufficient traction is exercised.

advantageously, For example, in practice, the box may comprise two end flaps which support the end Closure of the Reinforcement connection box to ensure. Each end flap can be made up of several individual flaps be formed, which separated in the region of the envelope of the rear wall are. In other words, each end flap is made up of two separate flaps formed, which delimit between themselves a zone, that of can be penetrated through the stable cut thread. This disassembly The end flap in two different sections also facilitates the removal of the reinforcement connection box, as on both Sides of the characteristic envelope halves of the Box independent can be removed from each other.

In a particular form, the reinforcement terminal box can be made of two independent semi-arches, which in the region of their opposite edges, for example by a Kle means are firmly connected to form the edge of the characterizing envelope.

Short description of drawings

The Way of execution The invention and the benefits resulting from it go well from the description and the following embodiment, with the aid of the attached Figures in which:

1 Figure 5 is a plan view of a rebar terminal box according to the invention, shown in a completely planar arrangement prior to folding.

2 an overall perspective view of the in 1 box shown during folding is.

3 a perspective cross-sectional view of the box shown completely folded the 1 is;

4 a cross sectional view of the box of 3 is.

5 is a plan view of a half box of a reinforcement connection box shown before folding.

Embodiment of the invention

As mentioned, the invention relates to a box of a reinforcement connection box, made of a sheet of a foldable material such as water repellent Cardboard, foldable plastic or synthetic materials and For example, cellular polypropylene can be produced.

The practical implementation can, for example, from the in 1 shown cut sheet are obtained. This bow 1 comprises several parallel zones which are intended to form the different walls of the box.

So embraces the bow 1 two zones 2 . 3 , which are designed to form the back wall of the box after folding. The zones 2 . 3 are outward of two zones 4 . 5 bordered, which form after folding the lateral zones of the box. Further out are the lateral zones 4 . 5 with flaps 6 . 7 connected, each forming half of the front wall of the box. On the outside are the flaps 6 . 7 with edge flaps 8th . 9 connected, which are folded into the interior of the box to form a zone which serves as a partition between the rear and the front wall.

Between the two halves 2 . 3 The back wall is a middle zone 10 which consists of two with respect to the central axis 13 symmetrical parts 11 . 12 consists. This middle area 10 forms after folding the distinctive envelope [refolding]. The width, measured in a transverse direction, of the parts 11 . 12 of the envelope is substantially equal to the width measured in the same direction of the side walls 4 . 5 , In this way, it is located on the axis of symmetry 13 located edge 14 of the envelope after folding and how in the 2 and 3 represented, substantially in the region of the front wall of the box.

According to a feature of the invention, the edge 14 of the envelope 15 through the presence of recesses 16 strongly broken. Between two successive recesses 16 The edge includes a section 17 which joins the two halves of the bow in a transverse direction. So that's in the area of the edge 14 existing amount of material relative to the total length of the box is relatively reduced.

On this way is the material that needs to be cut to open and Removing the box will ensure relatively limited what these different processes facilitated.

As in the 1 and 2 shown, include the two halves 2 . 3 the back wall openings 20 which are intended to allow the passage of metallic reinforcements, some of which are in 2 are shown. These openings 20 are together through slots 21 connected, which starting from the opening 20 and over the entire length of half 2 . 3 the back wall run. So, after folding, take those with the openings 20 connected slots 21 each only slightly less than half the width of the box. Thus, they have better resistance to deformation and opening than corresponding slots observed in prior art boxes which, on the contrary, extend over almost the entire width of the box. The tightness of the box according to the invention is thus significantly improved.

In the area of the envelope 15 are these slots 21 connected with oblong holes, which are almost the entire width of the central zone 10 run, which is intended to the envelope 15 to build. These slots 22 have a width, measured in the longitudinal direction of the box, which is slightly larger than the diameter of the reinforcements, which are intended to be arranged in the box. In this way, these slots form 22 when the bow is folded to the in 2 shown box structure, recesses, which are intended from the middle section 44 a reinforcement 45 to be penetrated in their arrangement in the box. The presence of these recesses avoids excessive deformation of the envelope 15 during insertion of the reinforcements.

When mounting the box, as in 2 shown, the middle envelope points 15 a height substantially equal to that of the box so as to form a partition which increases the pressure resistance of the box. This compressive strength is further enhanced by the presence of the edge flaps 8th . 9 which also increases the height of the envelope 15 have substantially identical width. In this way, the middle part of the box has four longitudinal elements present between the front wall and the rear wall, thus increasing the rigidity of the arrangement.

After the complete folding of the bow and as in 3 pictured, the box can 30 take a thread which is intended to facilitate the opening of the box. More specifically, this thread may be metallic or even a thread which is sufficiently strong to allow tearing of the box forming material. This thread is arranged by placing it between the two walls 11 . 12 is pushed the envelope 15 form. The insertion of this thread is made possible by the fact that the end flaps 23 . 24 form two different flaps, each closing one half of the box. These flaps 23 . 24 own edge flaps 25 . 26 , which are intended to penetrate when folding into the interior of the box. To ensure a perfect tightness, additional edge flaps 27 . 28 at the ends of the side walls 4 . 5 intended. The relative positioning of the two box halves is through the loop 44 the reinforcements ensured.

If the reinforcing terminal box has been provided with the reinforcements, then placed in a formwork and it is to be removed after drying the concrete, it is sufficient for the user, a tensile force on the thread provided for this purpose 32 exercise, so that the material sections 17 torn up very quickly and the box is divided into two sections. The operator must then only a pulling force on a flap 6 . 7 the front wall so that the arrangement of the corresponding half-box is removed from its seat, with the metallic reinforcements slide in their openings or then the slots 21 traverse reinforcements depending on the type used.

Of course, the use of a thread, as in 3 is shown, not indispensable, but it can be replaced by a Schnittvor gear, which is performed with a cutting tool between the two walls 11 . 12 of the envelope 15 is pushed. Although the presence of the longitudinal slots 16 reduces the amount of material to be cut and thus facilitates the removal operations, it is not mandatory, and the invention thus covers the variants in which the edge 14 only through the slots 22 is interrupted, which form the recesses for the arrangement of the reinforcements.

In addition, the rebar connection box can [repository] by assembling two semi-arcs 41 be formed as in 5 shown. This assembly may be accomplished by adhesive, stitching, welding, or any other means in the region of the opposite edges 42 be achieved. In the case that the half-bows have different dimensions, it is possible to combine them to extend the bandwidth of the reinforcing connections constituting the subject of the invention.

• • eine hervorragende Einfachheit des Entfernens, da die zu zerschneidende Zone auf der Vorderwand des Kastens angeordnet und somit leicht zugänglich ist;
• • eine hervorragende Steifigkeit aufgrund des Vorhandenseins des mittleren Umschlags, welcher eine Trennwand zwischen der Vorder- und Rückwand des Kastens bildet, was die Beständigkeit gegen das Zusammendrücken aufgrund des durch den Beton ausgeübten Drucks erhöht;
• • eine gute Dichtigkeit aufgrund des Vorhandenseins von Schlitzen von reduzierter Größe für den Durchtritt der Bewehrungen;
• • eine Einfachheit des Entfernens, welche zur Wiederverwertung zweier Halbkästen führt, welche Abfälle von relativ beachtlicher Größe darstellen und somit einfacher wiederzuverwerten und somit zu handhaben sind.

It can be seen from the foregoing that the box according to the invention of a reinforcement connection box has many advantages, of which in particular:

• An excellent ease of removal, as the zone to be cut is placed on the front wall of the box and thus easily accessible;
• Excellent rigidity due to the presence of the middle envelope, which forms a partition wall between the front and rear walls of the box, which increases the resistance to compression due to the pressure exerted by the concrete;
• • good tightness due to the presence of slits of reduced size for the passage of the reinforcements;
• A simplicity of removal which results in the recycling of two half-boxes representing wastes of relatively considerable size and thus easier to recycle and thus handle.

Claims (7)

Removable box of a reinforcement box for placing reinforcements for connection (45) between two concrete elements made by folding a sheet ( 1 ) of a foldable material and comprising: • a back wall provided with openings ( 20 ) for the passage of connection reinforcements ( 45 ) is pierced and intended to come in contact with the concrete; • a front wall ( 37 ), which two flaps ( 6 . 7 ) includes, which are turned towards each other; • two side walls ( 4 . 5 ), which the front ( 37 ) and rear walls, characterized in that the rear wall is an envelope ( 15 ), which is directed into the interior of the box, said envelope ( 15 ) an edge ( 14 ), which can be cut, which in the region of the front wall ( 37 ) between the flaps ( 6 . 7 ) of the latter, said edge after cutting being intended to facilitate the removal of said box. Box of reinforcing terminal box according to claim 1, characterized in that the envelope ( 15 ) Recesses ( 16 ) in the region of its edge ( 14 ) having. Box of reinforcing terminal box according to claim 1, characterized in that the envelope ( 15 ) Oblong holes ( 22 ), which openings ( 20 ) for the passage of each metallic reinforcement. Box of reinforcement box according to claims 2 and 3, characterized in that in the region of the edge ( 14 ) executed recesses ( 16 ) with the oblong holes ( 22 ) are connected, which the passage openings ( 20 ) connect the metallic reinforcements. Box of reinforcing terminal box according to claim 1, characterized in that it has an inside of the envelope ( 15 ), in the area of the edge ( 14 ) of this latter thread ( 32 ) intended to prevent tearing of the envelope ( 15 ) when removing the reinforcement connection box. Box of reinforcing terminal box according to claim 1, characterized in that it comprises two end flaps ensuring the closure of the reinforcing terminal box, each end flap being composed of several individual flaps ( 23 . 24 ) formed in the region of the envelope ( 15 ) of the rear surface are separated. Box of reinforcing terminal box according to claim 1, characterized in that it consists of two independent semi-arches ( 41 ), which in the region of their opposite edges ( 42 ) are firmly connected to form the edge of the envelope.