EP1932978A1 - Reinforcing element for absorbing forces in concreted slabs in the area of supporting elements - Google Patents

Abstract

The reinforced element (1) is made from steel. A clamp rod (3) is fixed at the base rod (2) in the form of a bracket. The clamp rod has two end regions (4,10), a middle region (7), two inclined regions (5,9) where two end regions are connected with the base rod. One of the inclined regions run away from the base rod while the other approaches towards the base rod and the middle region is at a distance from the base rod.

Description

The present invention relates to a reinforcing element for the absorption of forces in concrete slabs in the region of support elements, which reinforcing element is formed of reinforcing steel.

Furthermore, the invention relates to a reinforcement system for the absorption of forces in concrete slabs in the region of support elements, which is composed of a plurality of reinforcing elements.

In the area of supports for concrete floors and foundation slabs, precautions must be taken to be able to optimally initiate the supporting forces in the concrete slabs or foundation slabs, in particular for the absorption of so-called puncturing forces. For this purpose, various solutions have been proposed, for example, it is known to use in these areas so-called steel fungi. These steel mushrooms meet the requirements very well, but their disadvantage is that they are very expensive.

Furthermore, it is also known that in the area of the columns in the foundation plates or concrete floors so-called push baskets are inserted, which are formed of reinforcing steel. However, it has been shown that in such elements, the load is limited.

The object of the present invention is now to provide a reinforcing element for the absorption of forces in concrete slabs in the range of support elements, which can accommodate large loads and which can be easily and inexpensively manufactured.

According to the invention, the solution of this object is achieved in that at least one basic bar is fixed at least one bracket having a stirrup bar, which stirrup bar has a first end area which is connected to the base bar, a first oblique area which runs away from the base bar, a central area , which is spaced from the base bar, has a second sloping area tapering towards the base bar is, and has a second end portion which is connected to the basic rod.

As a result, a very simple and inexpensive to produce reinforcing element is obtained, which can initiate the support forces in an optimal manner in the concrete floor or in the foundation plate.

Advantageously, the central region of the bracket bar has a length which corresponds approximately to the width of the support element, resulting in a good power distribution.

Between the base rod and the first oblique region of the stirrup rod and between the base rod and the second oblique region of the stirrup rod, an angle is formed in each case, which amounts to approximately 25 ° to 45 °.

An advantageous embodiment of the invention is that the reinforcing element is formed from a base bar and two mutually parallel strap bars, and that the strap bars have a distance from each other, which corresponds approximately to the thickness of the base bar. As a result, a reinforcing element can be created that meets certain requirements in an optimal way.

The reinforcing element, in order to meet very specific requirements even better, are also designed so that this consists of two mutually parallel bars and three mutually parallel strap bars or three mutually parallel bars and two mutually parallel strap bars, that the strap bars each at a distance from each other have, which corresponds approximately to the thickness of a base bar, and that the base bars each have a distance from each other, which corresponds approximately to the thickness of a stirrup bar. As a result, the basic rods and stirrup rods can also be optimally interconnected.

Advantageously, the connection between the end regions of the stirrup rods with the basic rods by welding takes place, in addition still reinforcing elements can be used. As a result, the required strength of the joints is achieved.

Advantageously, the end portions of the basic rods are provided with anchoring elements, whereby these end portions of the basic rods are anchored in an optimal manner in the concrete floor or in the foundation plate. In a known manner can be attached as anchoring to the basic rods end plates or anchor heads, the end portions of the basic rods can also be provided with a turn, it is also conceivable to provide the basic rods with long end portions, resulting in a good anchorage in the concrete by the length the execution results.

The reinforcing elements are designed so that a reinforcement system for the absorption of forces in concrete ceilings or foundation plates in the area of support elements can be assembled from a plurality of reinforcing elements. In a support member whose cross-section has a width which corresponds approximately to the length, thereby several reinforcing elements can be used crosswise.

Advantageously, reinforcing elements with two different heights are used in this crosswise use, so that the reinforcing elements are inserted with a lesser height in the reinforcement elements with greater height. This allows these reinforcing elements are optimally assembled for a variety of applications.

In an advantageous manner, a rotating element is mounted in at least one intersection point in crossing reinforcing elements. As a result, reinforcement systems that consist of intersecting reinforcement elements and are pre-assembled, be merged for transport around the rotating elements, whereby the space requirement is low.

In a support element which has a length which is substantially greater than its width, a plurality of reinforcing elements can be used in an advantageous manner, which are parallel to each other and transverse to the longitudinal direction The support element are aligned, whereby an optimal reinforcement system, for example, for retaining walls is reached.

With these reinforcement elements assembled to reinforcement systems, the great advantage is achieved that the basic rods extend over the respective support body, and that these reinforcing elements can be optimally integrated into the upper and lower bending reinforcement layers of the concrete floor or foundation plate.

Embodiments of the present invention will now be described by way of example with reference to the accompanying drawings.

• Fig. 1 bis 3 in einer Ansicht, einer räumlichen Darstellung und einer Draufsicht ein erstes Ausführungsbeispiel eines Bewehrungselementes;
• Fig.4 und 5 in räumlicher Darstellung die Ausgestaltung der Verbindung zwischen den Bügelstäben und dem Grundstab;
• Fig. 6 in räumlicher Darstellung eine Teilansicht eines weiteren Ausführungsbeispiels eines Bewehrungselementes;
• Fig. 7 bis 9 in einer Ansicht, einer räumlichen Darstellung und einer Draufsicht ein aus zwei Bewehrungselementen gebildetes Kreuz;
• Fig. 10 bis 12 in einer Ansicht, einer räumlichen Darstellung und einer Draufsicht ein aus drei Bewehrungselementen gebildetes Kreuz;
• Fig. 13 bis 15 in einer Ansicht, einer räumlichen Darstellung und einer Draufsicht ein aus vier Bewehrungselementen gebildetes Kreuz;
• Fig. 16 und 17 in einer Ansicht und einer räumlichen Darstellung ein vormontiertes Kreuz aus zwei Bewehrungselementen;
• Fig. 18 eine räumliche Darstellung eines Drehelementes zur Verbindung von zwei Bewehrungselementen, im aufgeklappten Zustand;
• Fig. 19 eine räumliche Darstellung des Drehelementes gemäss Fig. 18, wobei die beiden miteinander verbundenen Bewehrungselemente für den Transport zusammengeklappt sind;
• Fig. 20 in räumlicher Darstellung das für den Transport zusammengeklappte Drehkreuz;
• Fig. 21 eine Draufsicht auf ein aus Bewehrungselementen gebildetes Kreuz, bei welchem zusätzliche Bewehrungskörbe eingesetzt sind; und
• Fig. 22 eine Draufsicht auf ein Stützelement, dessen Länge wesentlich grösser ist als dessen Breite, mit parallel zueinander in Reihe angeordneten Bewehrungselementen.

It shows

• Fig. 1 to 3 in a view, a spatial representation and a plan view of a first embodiment of a reinforcing element;
• 4 and 5 in a spatial representation, the configuration of the connection between the hanger bars and the base bar;
• Fig. 6 in a spatial representation of a partial view of another embodiment of a reinforcing element;
• Fig. 7 to 9 in a view, a spatial representation and a plan view of a two reinforcing elements formed cross;
• 10 to 12 in a view, a spatial representation and a plan view of a three reinforcing elements formed cross;
• Fig. 13 to 15 in a view, a spatial representation and a plan view of a four reinforcing elements formed cross;
• FIGS. 16 and 17 in a view and a spatial representation of a pre-assembled cross of two reinforcing elements;
• Fig. 18 a spatial representation of a rotary element for connecting two reinforcing elements, in the unfolded state;
• Fig. 19 a spatial representation of the rotary element according to Fig. 18 , wherein the two interconnected reinforcing elements are folded for transport;
• Fig. 20 in spatial representation, the turnstile folded up for transport;
• Fig. 21 a plan view of a formed of reinforcing elements cross, in which additional reinforcing cages are used; and
• Fig. 22 a plan view of a support member whose length is substantially greater than its width, with parallel to each other in series reinforcement elements.

In the Fig. 1 to 3 a first embodiment of an inventive reinforcement element 1 is shown. This reinforcing element 1 consists of an elongated base rod 2, to which a respective first bracket bar 3 having the shape of a bracket and a second, the first bracket bar 3 corresponding bracket bar 3 'is attached. These two stirrup bars 3 and 3 'have a first end region 4, which is connected to the base bar 2 in each case. Subsequently, at this first end region 4, both stirrup rods 3 and 3 'comprise a first oblique region 5 which runs away from the base rod 2, specifically at an angle β1 which in the present embodiment is approximately 30 °. The first oblique region 5 is completed by a bend 6, which is formed so that the stirrup rods 3 and 3 'extend in the following central region 7 approximately parallel to the base bar 2. This middle region 7 is then completed by a further bend 8, whereby the bail bar 3, 3 'merges into a second inclined region 9, which is tapered to the base bar 2, and at an angle β2, which in the present embodiment also about 30 ° is. The second inclined region 9 of the two stirrup rods 3, 3 'terminates in the second end region 10, which in each case is in turn connected to the base rod 2.

The connection between the end portions 4 and 10 of the hanger bars 3, 3 'with the base bar 2 via welding. In order to be able to achieve an optimum connection here, reinforcing elements 11 can additionally be used, which will be described in detail later.

Like also from the Fig. 1 to 3 it can be seen, the base bar 2 is provided at its end with anchoring elements 12, which are formed in the illustrated embodiment of bending the end portions of the base bar 2, but these anchoring elements 12 could also be formed in a known manner from anchor heads, it is also conceivable that the end portions of the base bar 2 are extended, and that the anchoring in the concrete is achieved by the length of the base bar 2 in sufficient mass.

The base bar 2 and the stirrup bars 3 are formed of commercially available reinforcing steel, the diameter of these reinforcing bars being adapted to the intended use and the load, it is also conceivable to manufacture such reinforcing elements from stainless steel instead of reinforcing steel, if a corresponding application so requires, However, other suitable materials are also conceivable.

Out Fig. 1 it is apparent how the reinforcing element 1 can be used. Here, a support member 13 is shown schematically, which is to support a concrete plate 14. The reinforcing element 1 is used in such a way that the respective base bar 2 is adjacent to the supporting element 13, while the stirrup bars 3 face away from the supporting element 13. The base bar 2 can come to rest during installation, for example, to the height of the first lower bending reinforcement layers of the ceiling. The central region 7 of the reinforcement element 1 can then come to lie on the height of the fourth uppermost bending reinforcement layer of the ceiling. As a result, this reinforcing element 1 is optimally integrated into the bending reinforcement layers of the ceiling. The central region 7 has a length which corresponds approximately to the width of the support element 13.

Fig. 4 shows in a spatial representation the formation of a connection between the two hanger bars 3, 3 'and the base bar 2. The respective end region 4 of the hanger bars 3 and 3' is laterally welded to the base bar 2. For reinforcement are on the base bar 2 and on the hanger bars 3 and 3 'four short rod pieces 15 welded, which are each outwardly lying covered with a bridge element 16, which bridge element 16 with the hanger bars 3 and 3' is also welded. As a result, an optimal connection between the base bar 2 and hanger bars 3, 3 'is achieved, which can absorb the loads optimally. The opposite connection on the reinforcing element 1 is the same.

Fig. 5 shows another possibility of the connection between the hanger bars 3 and 3 'and the base bar 2. The hanger bars 3 and 3' are in turn laterally welded to their end portions 4 on the base bar 2, above a reinforcing plate is placed in the region of the end portions 4 of the hanger bars 3 and 3 'each have a recess 18, this reinforcing plate 17 is in turn welded to the base bar 2 and the hanger bars 3 and 3'. This also gives you an optimal connection.

Fig. 6 shows the one half of another embodiment of a reinforcing element 1. This embodiment is in turn composed of the basic bars 2 and bar members 3, which are formed identically, as those according to the first embodiment. In this case, three basic bars 2, 2 ', 2 "are used, to which two stirrup bars 3, 3' are fastened, in which case the end areas 4 of the stirrup bars 3, 3 'extend between the basic bars 2, 2', 2", so that stirrup bars 3, 3 ', 3 "and basic bars 2, 2' each have a corresponding distance from one another. To strengthen the connection, rod pieces 15 can again be inserted and welded to the corresponding bars.

Of course, other combinations are possible, for example, three stirrup rods and two basic rods could be used, the basic rods would extend between the respective stirrup bars and the rods in turn would have the appropriate distance from each other. Of course, other combinations are possible, depending on the application and the loads to be transmitted.

The Fig. 7 to 9 show a first embodiment of a reinforcement system 19, which consists of two reinforcing elements 1, as to the Fig. 1 to 3 have been described. Here, a first reinforcing element 1 is arranged crosswise to a second reinforcing element 1 '. The second reinforcing element 1 'has a lower height relative to the first reinforcing element 1 between the base bar 2 and the central area 7, so that the second reinforcing element 1' can be inserted into the first reinforcing element 1. This reinforcement system 19 comes when inserted into the concrete floor 14, as in Fig. 7 is shown, between the first and fourth reinforcement layer, that is to lie on the height of the second and third reinforcement system of the ceiling, so that this system 19 is optimally integrated into the bending reinforcement layers of the ceiling.

From the 10 to 12 a further embodiment of a reinforcement system 19 can be seen, this embodiment is composed of a first reinforcing element 1, in which transversely to two second reinforcing elements 1 ', at a distance from each other, are inserted transversely. The location of this embodiment of a reinforcement system 19 in the supported by the support member 13 ceiling 14, as shown in Fig. 10 is shown in the same manner as in the previous embodiment. How out Fig. 12 it can be seen, this reinforcement system 19 is suitable with a first reinforcing element 1 and two reinforcing elements 1 'arranged transversely thereto, in particular for supports 13 which have a rectangular shape.

Another embodiment of a reinforcement system 19 is shown in FIGS Fig. 13 to 15 shown. In this reinforcement system 19, two parallel aligned first reinforcing elements 1 are used, in which two second reinforcing elements 1 'are inserted transversely thereto. The position and arrangement in the ceiling 14 is carried out in the same manner as in the previous embodiments, so that an optimal integration in the first to fourth bending reinforcement layer of the ceiling is achieved here. such Reinforcement systems can be used in particular for support elements 13, which have a greater width and length, as in Fig. 15 can be seen and which larger loads have to take over.

In the FIGS. 16 and 17 shows the embodiment of a reinforcement system 19, which corresponds to that in the Fig. 7 to 9 has been described. This reinforcement system 19 can be delivered in the preassembled state. For this purpose, a rotary member 20 is mounted in the upper intersection of the two reinforcing elements 1 and 1 ', which will be described in detail below. Like from the FIGS. 18 and 19 As can be seen, the rotary member 20 consists of an upper cap 21 and a lower cap 22 which comprise the respective stirrup rods 3, 3 "of the first reinforcing element 1 and the second reinforcing element 1 ' This screw 23 can be loosened, the first reinforcing element 1 and the second reinforcing element 1 'can then be folded around the axis of this screw 23, as shown in particular Fig. 20 it can be seen, these preassembled reinforcement systems 19 can thus be transported to save space in this folded position and opened at the site and fixed by tightening the screw 23 in the unfolded position.

In Fig. 21 a reinforcement system 19 is shown, which is formed from a first reinforcing element 1 and a second reinforcing element 1 ', as have been previously described, which form a cross. This reinforcement system is arranged centrally on the support element 13. In the corner areas of this support member 13 and between the reinforcing elements 1 and 1 'can be used as additional reinforcement or reinforcement cages 24, which have the known structure of reinforcing steel. It is also conceivable that 24 anchor anchors are used instead of the reinforcement cages.

Fig. 22 shows a plan view of a support member 13 which has a substantially greater length than width. This can be, for example, a retaining wall. Advantageously, in the plate to be supported a Row of first reinforcing elements 1 are used, which are spaced apart and aligned parallel to each other. This gives you an optimal support here.

The reinforcing elements, as described above, can be combined in various ways, depending on the load to be absorbed, but also on the cross-sectional shape of the support element. It is particularly advantageous in this case that these reinforcing elements, which form the respective desired reinforcement system, in the region of the support element are each continuous, which allows optimal load bearing.

Claims (11)

Reinforcing element for the absorption of forces in concrete slabs (14) in the region of supporting elements (13), which reinforcing element (1) is formed of reinforcing steel, characterized in that at least one basic rod (2) has at least one bracket having the shape of a bracket ( 3), which stirrup bar (3) has a first end area (4) connected to the base bar (2), a first inclined area (5) running away from the base bar (2), a central area (7), which is spaced from the base bar (2), a second inclined area (9) tapering towards the base bar (2) and a second end area (10) connected to the base bar (2). Reinforcing element according to claim 1, characterized in that the central region (7) of the bracket bar (3) has a length which corresponds approximately to the width of the support element (13). Reinforcing element according to claim 1 or 2, characterized in that between the base rod (2) and the first oblique region (5) of the hanger bar (3) and between the base bar (2) and the second inclined region (9) of the hanger bar (3) each one Angle (β1, β2) is formed, which is in each case about 25 ° to 45 °. Reinforcing element according to one of claims 1 to 3, characterized in that it consists of a base bar (2) and two mutually parallel strap bars (3, 3 ') is formed, and that the stirrup rods (3, 3') at a distance from each other, the about the thickness of the base bar (2) corresponds. Reinforcing element according to one of claims 1 to 3, characterized in that this consists of two mutually parallel basic bars (2, 2 ') and three mutually parallel strap bars (3, 3', 3 ") or three mutually parallel basic bars (2, 2 ', 2 ") and two parallel bar members (2, 2 ') is that the stirrup rods (3, 3', 3 ") each have a distance from one another which corresponds approximately to the thickness of a base bar (2), and that the basic bars (2, 2 ', 2") each have a distance from each other, which corresponds approximately to the thickness of a hanger bar (3). Reinforcement element according to one of claims 1 to 5, characterized in that the connection between the end regions (4, 10) of the stirrup rods (3, 3 ', 3 ") with the basic rods (2, 2', 2") is effected by welding, using reinforcing elements (11). Reinforcing element according to one of claims 1 to 6, characterized in that the end regions of the basic rods (2, 2 ', 2 ") are provided with anchoring elements (12). Reinforcing system for absorbing forces in concrete foundation slabs or slabs of supporting elements, composed of a plurality of reinforcing elements (1) according to one of claims 1 to 7, characterized in that in a support element (13) whose cross-section has a width which is about the length corresponds, a plurality of reinforcing elements (1, 1 ') are crosswise used. Reinforcement system according to claim 8, characterized in that in a criss-crossing use reinforcing elements (1, 1 ') with two different heights are used, so that the reinforcing elements (1') with a lower height in the reinforcing elements (1) are inserted with greater height. Reinforcement system according to claim 9, characterized in that at intersecting reinforcement elements (1, 1 ') in at least one intersection point, a rotary member (20) is mounted. Reinforcement system for the absorption of forces in concrete floors or ceilings in the area of supporting elements, composed of a plurality of reinforcing elements (1) according to one of claims 1 to 7, characterized in that in a support element (13) having a length has, which is substantially larger than its width, a plurality of reinforcing elements (1) are used, which are aligned parallel to each other and transversely to the longitudinal direction of the support element (13).

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