CH702392A2 - Reinforcement device. - Google Patents

Abstract

A reinforcing device according to the invention has at least two stirrup spirals (20, 20 ') arranged substantially parallel next to one another with transverse sections (25) and longitudinal sections (27). Furthermore, this has a two-layer tensile reinforcement (11) comprising at least two rods arranged transversely to one another and a two-layer compression reinforcement (9) comprising at least two further rods arranged transversely to one another.

Description

The present invention relates to a reinforcement device and a method for producing a reinforcement device according to the invention.

Are known reinforcing devices for receiving punching forces in the form of reinforcement cages, so-called push baskets in connection with puncture fungi, so-called steel fungi. Furthermore, a reinforcing device with bent reinforcing bars in the punching basket is known from US Pat. No. 3,389,930 B1.

An object of the present invention was to provide a reinforcement device, which significantly reduces the punching risk, for example, the punching of a support by a flat ceiling or by a foundation plate.

According to the invention is proposed by a reinforcement device with the features of claim 1. Further, inventive embodiments will become apparent from the features of further claims 2-25.

An inventive reinforcement device has at least two weitgehenst parallel juxtaposed ironing spirals with transverse sections and longitudinal sections. Further, this has a two-layer tensile reinforcement of at least two rods arranged transversely to each other and a two-layer compression reinforcement of at least two further bars arranged transversely to one another. In each case, the first of the bars and the first of the further bars are arranged in each case between transverse sections substantially parallel to these aligned. Further, the second of the bars and the second of the further bars are arranged in the longitudinal direction at least between the ironing spirals and / or in the longitudinal direction within the ironing spiral. The ironing spiral surrounds the printed diagonal and thereby ensures that in several sections, which can be removed to the forces acting in the support area transverse forces.

An embodiment is that the longitudinal sections are formed inclined. The ironing spiral surrounds the printed diagonal and thereby ensures that in several sections, the lateral forces can be effectively removed.

Another embodiment is that the longitudinal sections have at least one pitch angle of about 40 ° to about 85 °. As a result, a particularly good absorption of lateral forces is achieved.

Another embodiment is that the first pitch angle about 55 ° to about 65 °, preferably about 60 ° and the second pitch angle about 70 ° to about 80 °, preferably about 75 °. Again, in turn, an effective absorption of the shear forces can be achieved.

Another embodiment is that the ironing spirals have two sections, such that a respective slope for the slope in the first section is about 50 mm and the further slope in the second section is about 100 mm. In turn, a particularly effective absorption of the transverse forces can be achieved. It is generally conceivable that the first section is formed with approximately half the pitch compared to the second section.

A further embodiment is that at least two ironing spirals are arranged opposite each other and / or approximately at right angles to each other, such that the respective last upper transverse section is arranged as close as possible to the respective respective last upper transverse section. As a result, the reinforcement device according to the invention can be laid as an inner, edge or corner support. This has the effect that transverse forces, which act on a flat ceiling or on a foundation slab of reinforced concrete, can be reliably absorbed even in the most diverse space geometries.

A further embodiment is that in each case two ironing spirals are arranged opposite to each other, so that the four ironing spirals together form a cross. As a result, the inventive reinforcement device arranged as an inner support, effectively absorb lateral forces.

Another embodiment is that two ironing spirals are arranged opposite to each other and the third ironing spiral protrudes approximately at right angles in the lateral direction of these two ironing spirals. As a result, the reinforcement device according to the invention arranged as edge support, effectively absorb lateral forces.

A further embodiment is that two ironing spirals are arranged approximately at right angles to each other. As a result, the reinforcement device according to the invention, arranged as a corner support, can effectively absorb lateral forces.

A further embodiment is that at least one reinforcement cage is formed, which is arranged along a longitudinal side of the ironing spiral or along longitudinal sides of the ironing spirals. As a result, the absorption of lateral forces can be ensured even better.

A further embodiment is that it has at least two first reinforcing elements, wherein the reinforcing elements are each enclosed at least partially by the corresponding spiral bracket. This ensures reliable reception of the transverse forces acting on the flat ceiling or foundation plate in the area of the armature as well as the transverse forces acting in the area of the support.

A further embodiment is that the reinforcing elements arranged substantially parallel to one another have mutually different fanning angles, wherein the corresponding fanning angle is formed in each case at a diffraction point between a horizontal axis and an intermediate part projecting therefrom and wherein the reinforcing elements are respectively arranged within the ironing spiral , This ensures that the reinforcing elements protrude differently far into the respective spiral bracket and thus also have differently arranged anchoring points. This leads to a particularly good absorption of shear forces. It is also conceivable that in each case more than two reinforcing elements, each with different Auffächungswinkeln are arranged parallel to each other.

An embodiment is that the reinforcing elements have at one end in each case an anchor, from which the middle part of the respective reinforcing element projects obliquely upwards and flattening runs against a height. In this case, the middle part opens into a final part and the reinforcing elements are each arranged within the ironing spiral. As a result, the ductility properties are considerably improved, for example, in the case of an edge support arrangement of the reinforcement device according to the invention.

A further embodiment is that the reinforcing elements each have an armature at one end. In this case, protrudes from this anchor a first intermediate part of the reinforcing element obliquely upwards and runs flattening against a height. Another intermediate part connects in a mirror-like manner to the first intermediate part to a flattened part and protrudes obliquely downwards and opens into another anchor. As a result, the ductility properties are significantly improved, for example, in an inner support assembly of the inventive reinforcement device.

A further embodiment is that in addition to the first reinforcing elements, at least two further reinforcing elements are arranged crossing each other. In this case, the other reinforcing elements on more different from one another Auffächungswinkel. Thereby, a recording of lateral forces in different directions around a support in a flat ceiling or in a foundation plate is made possible.

Another embodiment is that the further reinforcing elements, the first reinforcing elements are arranged to intersect by approximately 90 °. As a result, the transverse forces acting on the flat ceiling or on the foundation plate are introduced particularly well.

Another embodiment is that the fanning angles are formed between about 10 ° to about 50 °, preferably about 25 ° to about 35 °. This leads to a particularly good absorption of shear forces.

Another embodiment is that the reinforcing elements of a high-alloy steel, preferably 17MnV7 exist. As a result, the ductility properties of the inventive reinforcement device are significantly improved.

A further embodiment is that the first reinforcing elements have different heights in comparison to the other reinforcing elements. This makes it possible that the reinforcing elements can be arranged crossed to each other, so that lateral forces of different directions can be reliably absorbed.

An embodiment is that in each case two of the reinforcing elements by means of at least one transverse connection, preferably in the form of at least one welded to the respective reinforcing element connecting rod, are connected to a shear reinforcement body. This allows easy mounting of the inventive reinforcement device on a construction site.

A further embodiment is that the reinforcing elements are each enclosed by at least one or more tension wires. As a result, the ductility properties of the reinforcement device according to the invention can be further improved.

Another embodiment is that the tension wires are arranged straight along the corresponding reinforcing elements or that the tension wires wrap around the respective reinforcing elements. This allows the tension wires to work particularly well as a slack reinforcement.

Another embodiment is a flat ceiling or a foundation plate, which is provided with a reinforcement device. As a result, lateral forces, for example, a reinforced flat slab (or foundation slab) made of reinforced concrete can be easily absorbed very reliably.

A further embodiment relates to a method for producing a reinforcement device according to the invention, the method comprising the following steps: Cold bending of at least one reinforcing element; and Applying the tension wires to the reinforcing element.

As a result, a reinforcement device according to the invention can be produced reliably and cost-effectively.

Yet another embodiment relates to a method for producing a reinforcing device according to the invention, the method comprising the following steps: Applying the tension wires to the reinforcement element; and Cold bending of the reinforcing element provided with the tension wires.

As a result, in turn reliable and cost-saving an inventive reinforcement device can be produced.

Embodiments of the present invention will be explained in more detail below with reference to figures. Show it <Tb> FIG. 1 <sep> a conventional punching reinforcement; <Tb> FIG. 2 <sep> schematically, a side section of a reinforcement device according to the invention; <Tb> FIG. 3 <sep> schematically, a side section through reinforcing elements; <Tb> FIG. 4 <sep> schematically, an enlarged partial section according to FIG. 3; <Tb> FIG. 5 <sep> schematically, further reinforcement elements; <Tb> FIG. Fig. 6 schematically shows a cross-section of a reinforcing element provided with tension wires; <Tb> FIG. 7a to b <sep> schematically, another inventive reinforcement device; <Tb> FIG. 8a to b <sep> schematic, still another inventive reinforcement device; and <Tb> FIG. 9a to c <sep> schematically, Innenstützen-, Randstützen- or Eckstützenanordnungen a reinforcement device according to the invention. <Tb> FIG. 10 <sep> schematically, a perspective view of a reinforcement cage

In Fig. 1, a conventional punching shear reinforcement, as described in US 3,385,093 B1, shown.

In Fig. 2 is a schematic side view of an inventive reinforcement device, which is arranged in a flat ceiling 1 with a support 3. The flat ceiling 1 can also represent a foundation plate. The flat ceiling 1 has a lower and upper rod-shaped reinforcing steel reinforcement 5, 7, wherein the lower reinforcing steel reinforcement 5 forms a compression reinforcement 9 and the upper reinforcing steel reinforcement 7 is a tensile reinforcement 11. The pressure reinforcement 9 is orthogonal two-ply with a first layer 13 and a The second layer 15. The tensile reinforcement 11 is also formed orthogonal two-ply with a third layer 17 and a fourth layer 19. The layers 13, 15, 17, 19 are each made of rods, for example of a metal such as steel. Further, from Fig. 2Bügelspiralen 20, 20 can be seen. In each case two bow spirals 20, 20 are arranged substantially parallel to one another and form a pair 23. Two of the pairs face each other frontally and the third pair 23 projects approximately at right angles therefrom. Further, from Fig. 2, transverse sections 25 and longitudinal sections 27 of the spiral spirals 20, 20 can be seen. The longitudinal sections 27 shown in the foreground, starting from a horizontal axis A1, each have a first pitch angle γ1 of approximately 60 °. The longitudinal sections 27 shown in the background each have a pitch angle γ2 starting from an axis A1 of about 75 °.

In Fig. 3 is a side section through reinforcing elements 29, 31, 33 and 35 and a reinforcing cage 37 is shown schematically. The reinforcing elements 29, 31, 33 and 35 are formed in the form of bent reinforcing bars and consist for example of a high-alloy steel, such as a material 17MnV7 (which corresponds approximately to a material no. 1.0870). The use of the material 17MnV7 fulfills the requirements of the standard EN 10080: 2005 on the composition (C ≤ 0.24, S ≤ 0.055, P ≤ 0.055, N ≤ 0.014, Cu ≤ 0.85). The requirements according to the same standard for the carbon equivalent (weldability) are also met (C_eq ≤ 0.52). The reinforcing baskets 37 and the reinforcing bars 29, 31, 33 and 35 for absorbing transverse forces, which can lead to a failure of a punching of the flat ceiling 1, are between layers 13, 15, which a pressure reinforcement 9 or layers 17, 19 , Which form a tensile reinforcement 11, arranged. The first reinforcing elements 29, 31 shown in FIG. 3 are arranged approximately orthogonally offset from the further reinforcing elements 33, 35. As can be seen from FIG. 3, the reinforcing elements 29, 31 each have a bent end 39, 39, 51, 51 on each side. The bent ends 39, 39, 51, 51 each form an armature 41, 41, 49, 49. The anchors 41, 41, 49, 49 are each arranged within the corresponding reinforcing cage 37. Starting from the upwardly open bent ends 39, 39, these respectively open into corresponding intermediate parts 43, 43 which initially run parallel along a further axis A2 and then extend obliquely upwards in a flattening manner to a height H2. Subsequent to flattened parts 45, 45 of the corresponding intermediate parts 43, 43 further intermediate parts 47, 47 are mirror-inverted. These protrude obliquely downwards from the flattened parts 45, 45 and open into a further armature 49, 49, respectively into further ends 51, 51. 3zwei different from each other fanning angle α1, β1. seen. These fanning angles α1, β1 are respectively formed at a diffraction point 52, 52 between the horizontal axis A2 and the intermediate part 43, 43, 47, 47 beveled therefrom. Next, the reinforcing elements 29, 31, 33 and 35 on Abbeugungsstellen 54, 54. These deflection points 54, 54 are formed between each of the flattened portions 45, 45 and the obliquely downwardly extending portions of the intermediate portions 45, 45, 47, 47. In this case, the deflection points 54, 54 are aligned such that a width B of the support 3 corresponds approximately to a width of the corresponding flattened portion 45, 45. In other words, the deflection points 54, 54 do not protrude beyond the width B of the support 3. The fan angle α1 in Fig. 3 is about 25 ° and the fan angle β1 is about 35 °. The fanning angle α1 is formed starting from the axis A2 between the intermediate part 43 guided parallel along the axis A2 and an upwardly projecting section of the intermediate part 43 of the reinforcing element 29. The fan-out angle β1 is formed starting from the axis A2 between the intermediate part 43 guided parallel along the axis A2 and an upwardly projecting section of the intermediate part 43 of the reinforcing element 31. This ensures that the armatures 41, 49 of the reinforcing element 29 and the armatures 41, 49 of the reinforcing element 31 are formed differently far to an edge side of the reinforcing cage 37 out. The armatures 41, 41 and 49, 49, which are offset in parallel with respect to one another, are arranged inside the reinforcing cage 37. The reinforcing elements 33, 35 are arranged below the reinforcing elements 29, 31 guided transversely to these. Next, in Fig. 3, a partial section A can be seen, which will be further explained below.

Fig. 4 shows schematically the enlarged partial section A according to FIG. 3. Here, the intermediate part 43 of the reinforcing element 29 and the intermediate part 43 of the reinforcing element 31 is shown. Further, the different fan angles α1, β1 are shown. A wave-shaped wave element 53 of the reinforcement cage 37 is connected to further wave elements (not shown in FIG. 4) via cross bars 55, for example via welding points. The shaft member 53, respectively. The shaft elements and the cross bars 55 together form the reinforcement cage 37. Further, from Fig. 4, the first layer 13, which consists of the lower rod-shaped reinforcing steel reinforcement 5 and the second layer 15 in the form of metal rods can be seen. These together form the pressure reinforcement 9. The metal rods of the second layer 15 are arranged with their longitudinal axis transversely to the lower rod-shaped reinforcing steel reinforcement 5. The third layer 17, which are arranged with its longitudinal axis transversely to the fourth layer 19 and the fourth layer 19 of the upper rod-shaped reinforcing steel reinforcement 7 form the tensile reinforcement 11th Further, from Fig. 4, the reinforcing element 33 can be seen, which is offset by approximately 90 ° to the other reinforcing elements 29, 31 is arranged. In this case, the reinforcing element 33 extends below the reinforcing elements 29, 31 and in this case has the height H1.

Fig. 5 shows schematically further reinforcing elements 57, 59 in the form of bent half-iron. The runner-like reinforcing elements 57, 59 are provided with respective bent ends 61, 61. The ends 61, 61, which are bent open at the top, respectively open into a middle part 63, 63 running parallel to the lower reinforcing bar reinforcement 5, which respectively opens into a leg 65, 65 protruding upwards on the one hand and into a parallel to the other, respectively lower rod-shaped reinforcing steel reinforcement 5 extending further leg 67, 67 opens. In this case, the legs 65, 65 and the other legs 67, 67 are each connected to one another via a closure part 69, 69. The runner-like reinforcing elements 57, 59 are aligned with their end parts 69, 69 to a wall 71, so that the inventive reinforcing device is suitable for an arrangement with an edge support 73. The reinforcing elements 57, 59 are arranged within the reinforcing cage 37, while the respective bent end 61, 61 is also disposed within the reinforcing cage 37. Further, from Fig. 5, further different fan angles α2 and β2 are shown. The fan angle α2 is formed between the two legs 65 and 67. The fan angle β2 is formed between the legs 65 and 67. The fan-out angle β2 is larger compared to the fan-out angle α2. The reinforcing elements 57, 59 are connected to each other via connecting rods 75 and thereby form a shear reinforcement body. Next, the pressure reinforcement 9 with its first layer 13 and its second layer 15 and the tension reinforcement 11 with its third layer 17 and its fourth layer 19 can be seen from Fig. 5.

Fig. 6 shows schematically a cross section of the clamping wires 77 provided with reinforcing element 29. Here, the clamping wires 77 surround a core 79 of the reinforcing element 29. Of course, the reinforcing elements shown in the remaining figures can be provided if necessary so.

Fig. 7a-b show schematically, another inventive reinforcement device. In this case, in Figure 7a ironing spirals 20 and four reinforcing elements 29, 31, 33, 35 are shown. In this case, the bow spirals 20, 20 surround the corresponding reinforcing element 29, 31, 33, 35, such that substantially each of the intermediate part 43, 43 or further intermediate part 47, 47 is enclosed by the corresponding bow spiral 20, 20. The armatures 41, 41 protrude freely from the ironing spiral 20. Two bow spirals 20, 20 form a pair 23, as already explained above. Further, pitch angles γ1, γ2 are shown, which are each between an even further horizontal axis A3 and a longitudinal section 27 shown in the foreground, respectively, and a longitudinal section 27 shown in the background be formed. In this case, the reinforcing elements 29, 31, the lower height H2 compared to a height H1 of the other reinforcing elements 33, 35. Fig. 7b shows in perspective view four pairs 23 of ironing spirals 20, 20, which are arranged so that they form a cross shape. The respective last upper transverse section 81 of the ironing spiral 20 is in each case arranged as close as possible to the corresponding adjacent last upper transverse section 81 of the adjacent ironing spiral 20. For better clarity, the compression and tension reinforcement are not shown in FIGS. 7a and 7b.

8a to b show schematically a still further inventive reinforcing device with further ironing spirals 21, 21st As can be seen from FIG. 8a, these ironing spirals 21, 21 each have a section Cl with a pitch of the ironing spiral of approximately 50 mm and a further section C2 with a pitch 24 of the ironing spiral of approximately 100 mm. Next transverse sections 25 and longitudinal sections 27 of the spiral spirals 21, 21 are shown. Fig. 8b shows a perspective view of four pairs 23 of ironing spirals 21, 21, which are arranged so that they form a cross shape. The respective last upper transverse section 82 of the bow-type spiral 21 is in each case arranged as close as possible to the corresponding adjacent last upper transverse section 82 of the adjacent bow-type spiral 21. For better clarity, the compression and tension reinforcement are not shown in FIGS. 8a and 8b. It is conceivable to combine the reinforcement device according to the invention as required with further reinforcement elements or spring elements or further reinforcing baskets (not shown in FIGS. 8a, 8b).

Fig. 9a-c show schematically each an inner support, Randstützen- or Eckstützenanordnung 83, 85, 87 of an inventive reinforcement device. For example, the inner support assembly 83 of FIG. 9a has four reinforcing baskets 37 disposed about a central support 89. The example four ironing spirals 20, 20 or 21, 21 and the possibly existing reinforcing elements 29, 31 and the other reinforcing elements 33, 35 are arranged crossed to each other. Further, the reinforcing baskets 37 are arranged on a respective longitudinal side 93 of the spiral iron 20. The reinforcing baskets 37 are, for example, of a conventional type. The edge support assembly 85 of FIG. 9b shows an edge support 91 with, for example, two pairs 23, 23 of bowing spirals 20, 20 and, for example, two reinforcing baskets 37. The edge support 91 is arranged in the vicinity of the wall 71. Ironing spirals 20, 20 or 20, 21 and / or runner-like reinforcing elements 57, 59 are arranged on a short side to the wall 71 between the reinforcement cages 37. Along the wall 71 along further reinforcing spirals 20, 20 or 21, 21 and / or reinforcing elements 29, 31, 33, 35 are arranged. The Eckstützenanordnung 87 of FIG. 9c shows in a wall corner 95 a corner support 97, over which a reinforcement cage 37 is arranged. This reinforcing cage 37 is bordered on two sides by the spiral spirals 20, 20 or 21, 21 and / or reinforcing elements 57, 59.

Fig. 10 shows schematically, a perspective view of the reinforcing cage 37. As already shown in Fig. 4, the shaft member 53 is connected to other shaft elements 53 via cross bars 55 and together form the reinforcement cage 37. The cross bars 55 are by means of welding points the wave elements 53, 53 applied.

Claims (25)

1. Reinforcement device with at least two weitgehst weitstest parallel juxtaposed ironing spirals (20; 20; 21; 21) with transverse sections (25) and longitudinal sections (27; 27; 27; 27), and a two-ply Tensile reinforcement (11; 11) of at least two bars arranged transversely to one another and a two-layered pressure reinforcement (9; 9) of at least two further bars arranged transversely to one another, whereby in each case the first of the bars and the first of the further bars respectively between transverse sections (25; 25) is arranged substantially parallel to these and the second of the bars and the second of the further bars in the longitudinal direction at least between the ironing spirals (20; 20; 21; 21) and / or in the longitudinal direction within the ironing spirals (20; 20; 21; 21) are arranged. 2. Reinforcing device according to claim 1, wherein the longitudinal sections (27; 27; 27; 27) are inclined. A reinforcing apparatus according to claim 1 or 2, wherein the longitudinal portions (27; 27; 27; 27) have at least one pitch angle (γ1; γ2) of about 40 ° to about 85 °. A reinforcing apparatus according to claim 3, wherein said first pitch angle (γ1) is about 55 ° to about 65 °, preferably about 60 °, and said second pitch angle (γ2) is about 70 ° to about 80 °, preferably about 75 °. A reinforcing device according to claim 3 or 4, wherein the stirrup spirals (20; 20; 21; 21) have two sections (C1; C2) such that a respective pitch (22; 24) for the pitch (22) in the first Section (C1) about 50 mm and the further slope (24) in the second section (C2) is about 100 mm. 6. Reinforcing device according to one of claims 1 to 5, wherein at least two stirrup spirals (20; 20; 21; 21) are arranged opposite one another and / or approximately at right angles to each other such that the respective last upper transverse section (81; 81) as close as possible to the respective respective last upper transverse section (81, 81) is arranged. A reinforcing device according to any one of claims 1 to 6, wherein each two stirrup spirals (20; 20; 21; 21) are opposed to each other such that the four stirrup spirals (20; 20; 21; 21) together form a cross form. A reinforcing device according to any one of claims 1 to 7, wherein two stirrup spirals (20; 20; 21; 21) are disposed opposite each other and the third stirrup coil (20) is approximately perpendicular in the lateral direction of these two stirrup spirals (20; 20) ; 21; 21) protrudes. 9. Reinforcing device according to one of claims 1 to 8, wherein two bow spirals (20; 20; 21; 21) are arranged approximately at right angles to each other. 10. Reinforcing device according to one of claims 1 to 9, having at least one reinforcing cage (37), which along a longitudinal side (93) of the ironing spiral (20; 20; 21; 21) or along longitudinal sides of the ironing spirals (20; 21). 11. Reinforcing device according to one of claims 1 to 10, having at least two first reinforcing elements (29; 31; 57), wherein the reinforcing elements (29; 31; 57; 59) are each supported by the corresponding ironing spiral (20; 20; 21; ) are at least partially enclosed. 12. Reinforcing device according to claim 11, wherein the reinforcing elements (29; 31) arranged essentially parallel to each other have different fan angles (α1; α2; β1; β2), wherein the corresponding fan angle (α1; α2; β1; β2) respectively at one Diffraction point (52; 52) is formed between a horizontal axis (A1; A2; A3) and an intermediate part (43; 47; 63) protruding therefrom, and wherein the reinforcing elements (29; 31) are each arranged inside the ironing spiral (20; 21, 21) are arranged. 13. Reinforcing device according to one of claims 11 to 12, wherein the reinforcing elements (57; 59) each have an armature at one end (61; 61) from which the middle part (63; 63) of the respective reinforcing element (57; 59 protruding obliquely upward and flattening against a height (Hl; H2) and wherein the middle part (63; 63) opens into a closure part (69; 69) and wherein the reinforcing elements (57; 59) in each case within the ironing spiral ( 20, 20, 21, 21) are arranged. 14. Reinforcing device according to one of claims 1 to 13, wherein the reinforcing elements (29; 31) at one end (39; 39) each have an armature (41; 41) from which a first intermediate part (43; 43) of the reinforcing element (29; 31) protrudes obliquely upwards and flattening against a height (H2) and another intermediate part (47; 47) projecting in a mirror-like manner to the first intermediate part (43; 43) to a flattened part (45; 45) adjoins and projects obliquely downward and opens into another anchor (49; 49). 15. Reinforcing device according to one of claims 11 to 14, wherein in addition to the first reinforcing elements (29; 31; 57), at least two further reinforcing elements (33; 35; 59), the first reinforcing elements (29; 31; 57) are arranged crossing each other and wherein the further reinforcing elements (33; 35; 59) have further different fan angles (α1; α2; β1; β2) from each other. 16. Reinforcing device according to claim 11, characterized in that the further reinforcing elements (33; 35; 59) are arranged to intersect the first reinforcing elements (29; 31; 57) by approximately 90 °. A reinforcing apparatus according to claim 12 or claim 15, wherein the fan angles (α1; α2; β1; β2) are formed to be about 10 ° to about 50 °, preferably about 25 ° to about 35 °. A reinforcing device according to any one of claims 11 to 17, wherein the reinforcing elements (29; 31; 33; 35; 57; 59) are made of a high alloy steel such as 17MnV7. 19. Reinforcing device according to one of claims 11 to 18, characterized in that the first reinforcing elements (29; 31; 57; 59) have different heights (H1; H2) compared to the further reinforcing elements (33; 35). 20. Reinforcing device according to one of claims 11 to 19, characterized in that in each case two of the reinforcing elements (29; 31; 33; 35; 57; 59) by means of at least one transverse connection, preferably in the form of at least one of the respective reinforcing element (29; 33; 35; 57; 59) of the welded connecting rod (75) are connected to a shear reinforcement body. 21. Reinforcing device according to one of claims 11 to 20, characterized in that the reinforcing elements (29; 31; 33; 35; 57; 59) are each enclosed by at least one or more tensioning wires (77). A reinforcing device according to any one of claims 11 to 21, wherein the tensioning wires (77) are arranged straight along the respective reinforcing elements (29; 31; 33; 35; 57; 59) or that the tensioning wires (77) engage the respective reinforcing elements (29; 31, 33, 35, 57, 59). 23. A flat ceiling (1) or a foundation plate, which is provided with a reinforcement device according to one of claims 1 to 22. 24. A method for producing a reinforcement device according to the invention according to one of claims 11 to 23, the method comprising the following steps: Cold bending of at least one reinforcing element (29; 31; 33; 35; 57; 59); and - Applying the tension wires (77) on the reinforcing element (29; 31; 33; 35; 57; 59). 25. A method for producing a reinforcement device according to the invention according to one of claims 11 to 23, the method comprising the following steps: - applying the tension wires (77) to the reinforcing element (29; 31; 33; 35; 57; 59); and Cold bending of the reinforcing element (29; 31; 33; 35; 57; 59) provided with the tensioning wires (77).