EP3533946B1 - Élément d'armature - Google Patents

Élément d'armature Download PDF

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Publication number
EP3533946B1
EP3533946B1 EP19159904.2A EP19159904A EP3533946B1 EP 3533946 B1 EP3533946 B1 EP 3533946B1 EP 19159904 A EP19159904 A EP 19159904A EP 3533946 B1 EP3533946 B1 EP 3533946B1
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EP
European Patent Office
Prior art keywords
rod
legs
rods
transverse
longitudinal
Prior art date
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EP19159904.2A
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German (de)
English (en)
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EP3533946A1 (fr
Inventor
Piet OCKET
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Intersig NV
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Intersig NV
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Publication of EP3533946A1 publication Critical patent/EP3533946A1/fr
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
    • E04B1/165—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material with elongated load-supporting parts, cast in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors

Definitions

  • the present invention relates to reinforcement elements for limiting shear stresses and/or preventing punching failure in floors which are supported by a column, or vice versa.
  • reinforcement elements In order to prevent punching failure in floors which are supported by columns, reinforcement elements are used.
  • existing reinforcement elements do not have an optimum reinforcing function and/or require the use of a large amount of valuable construction materials.
  • EP2698484A1 relates to point-supported elements that comprise lattice beams which comprise lower chords and a continuous upper chord arranged with open spaces between one another and at least one serpentine diagonal strut section with upper and lower bent portions between each two successive diagonal struts, the bent portions being secured in securing points.
  • the diagonal struts are angled in the same manner upwards and in the direction of the support.
  • the diagonal strut nearest to the support is inclined at a steeper angle ( ⁇ ) ⁇ 90° relative to the lower chords, and the preceding diagonal strut further from the support is inclined at an angle, which is flatter by at least 10°, of 45° ⁇ ( ⁇ 2) ⁇ 90°.
  • a reinforcement element comprising a proximal end, a distal end, at least one transverse rod, and at least one longitudinal rod, wherein the at least one longitudinal rod comprises a top longitudinal rod, and wherein the at least one transverse rod is connected to the top longitudinal rod; wherein the at least one transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg; wherein both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end; and wherein the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod; and characterized in that the two outer legs at the proximal end of the at least one transverse rod are at least two consecutive slightly slanted legs.
  • the reinforcement element comprises two longitudinal rods, and one and only one transverse rod, the two longitudinal rods comprising a top longitudinal rod and a bottom longitudinal rod; wherein the transverse rod is connected to the top longitudinal rod and to the bottom longitudinal rod; wherein the transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg; wherein both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end; and wherein the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod; and characterized in that the two outer legs at the proximal end of the transverse rod are two consecutive slightly slanted legs.
  • the reinforcement element as described herein comprises two transverse rods, wherein both transverse rods are connected to the top longitudinal rod and/or to the bottom longitudinal rod; wherein each transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg; wherein both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end; and wherein the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod; and wherein the two outer legs at the proximal end of each transverse rod are at least two consecutive slightly slanted legs.
  • the two transverse rods are parallel to each other.
  • the reinforcement element furthermore comprises a support rod, the support rod comprising a perpendicular part and a parallel part, wherein the perpendicular part is at right angles to the longitudinal rods, and wherein the parallel part runs parallel to the longitudinal rods.
  • the transverse rod comprises several slightly slanted legs and several greatly slanted legs between the three consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side.
  • the transverse rod is bent in several locations in order to form top bends and bottom bends, wherein the top bends project above the top longitudinal rod, and optionally wherein the bottom bends project below the bottom longitudinal rod.
  • the transverse rod and/or the longitudinal rods are uninterrupted.
  • the longitudinal rods are mutually parallel within a margin of error of 1.0°.
  • the reinforcement element comprises two transverse rods, wherein both transverse rods are connected to the top longitudinal rod; wherein each transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg; wherein both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end; and wherein the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod; and wherein the two outer legs at the proximal end of each transverse rod are at least two consecutive slightly slanted legs.
  • the reinforcement element comprises at least three substantially parallel longitudinal rods; the longitudinal rods comprising a top longitudinal rod and two bottom longitudinal rods, wherein each bottom longitudinal rod is connected to the top longitudinal rod by means of a transverse rod.
  • each transverse rod comprises at least three slightly slanted legs and at least one greatly slanted leg; and the three outer legs at the proximal end of each transverse rod are three consecutive slightly slanted legs.
  • each transverse rod comprises several slightly slanted legs and several greatly slanted legs between the three consecutive slightly slanted legs at the proximal end and the distal end.
  • the transverse rods are bent at several locations in order to form top bends and bottom bends, wherein the top bends project above the top longitudinal rod, and optionally wherein the bottom bends project below the bottom longitudinal rods.
  • the transverse rods and/or the longitudinal rods are uninterrupted.
  • the longitudinal rods are mutually parallel within a margin of error of 1.0°.
  • the reinforcement element comprises a transition point between the proximal end and the distal end, wherein the reinforcement element comprises further slightly slanted legs and further greatly slanted legs between the transition point and the distal end, wherein the further slightly slanted legs and the further greatly slanted legs run obliquely upwards in the direction of the distal end, wherein the slightly slanted legs form an angle ⁇ with the bottom longitudinal rods which is greater than the angle ⁇ which the greatly slanted legs form with the bottom longitudinal rods, and wherein the three outermost legs at the distal end are three consecutive slightly slanted legs.
  • the greatly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than 40.0° and which is smaller than 75.0°; and the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is smaller than 90.0° and which is at least 5.0° greater than the angle ⁇ between the greatly slanted legs and the top longitudinal rod.
  • the at least two consecutive slightly slanted legs at the proximal end of the at least one transverse rod are mutually parallel within a margin of error of 1.0°.
  • all slightly slanted legs are mutually parallel within a margin of error of 1.0°; and all greatly slanted legs are mutually parallel within a margin of error of 1.0°.
  • the method comprises the following steps:
  • the method comprises the following steps:
  • At least three consecutive slightly slanted legs are formed when bending the transverse rods at the proximal end.
  • This invention furthermore provides a reinforcing structure for limiting shear stresses and/or for preventing punching failure in a concrete floor, wherein the reinforcing structure comprises at least two reinforcement elements as described herein, and wherein the at least two reinforcement elements are arranged virtually parallel or rotationally symmetrical.
  • the at least two reinforcement elements comprise two or more opposite reinforcement elements; and the proximal ends of the two opposite reinforcement elements are connected to each other via a bracket.
  • the reinforcing structure is embedded in a set cement-containing material.
  • the concrete floor rests on the column or the column rests on the concrete floor.
  • This invention furthermore provides the use of a reinforcement element as described herein for limiting shear stresses and/or for preventing punching failure in a concrete floor which rests on a column or in a concrete floor on which a column rests.
  • a measurable value such as a parameter, an amount, a time period, and the like
  • a measurable value such as a parameter, an amount, a time period, and the like
  • This invention provides a reinforcement element comprising a proximal end, a distal end, at least one transverse rod, and at least one longitudinal rod, wherein the at least one longitudinal rod comprises a top longitudinal rod, and wherein the at least one transverse rod is connected to the top longitudinal rod; wherein the at least one transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg; wherein both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end; and wherein the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod; and characterized in that the two outer legs at the proximal end of the at least one transverse rod are at least two consecutive slightly slanted legs.
  • the reinforcement element is suitable for limiting shear stresses and/or preventing punching failure in a concrete floor.
  • the present reinforcement elements are being used in prefabricated concrete elements, also referred to as precast concrete slab floors or wide-slab floors.
  • a prefabricated concrete element is an unsupported system floor and consists of flat rectangular elements which are, for example 50 mm thick, made from prefabricated concrete with continuous lattice girders.
  • a prefabricated concrete element is placed on and/or around a column and the prefabricated concrete element comprises additional reinforcement in the form of additional reinforcement rods which are placed on top of the column around and on which the prefabricated concrete element rests, and which are placed between diametrically opposite reinforcement elements.
  • the reinforcement elements, the mat, and the additional reinforcement rods are embedded in concrete. Via this concrete, the forces on the top longitudinal rod are transmitted to the additional reinforcement rods which, in turn, transmit these forces to opposite reinforcement elements.
  • the additional reinforcement rods are connected to the diametrically opposite reinforcement elements.
  • the additional reinforcement rods are not connected to the diametrically opposite reinforcement elements.
  • the height of the bends is identical, that is to say the height of the projecting loops, smaller than or equal to the thickness of the mat which is situated on the reinforcement elements in a prefabricated concrete element.
  • the mat consists of one layer of rods. In some embodiments, the mat consists of two layers of rods. In some embodiments, the rods in the layers of rods have a thickness between 6.0 mm and 50.0 mm, or a thickness between 8.0 mm and 25.0 mm, or a thickness between 10.0 mm and 15.0 mm, or a thickness between 11.0 mm and 13.0 mm.
  • the prefabricated concrete element also comprises a net which is situated under the reinforcement elements.
  • the mat which is situated under the reinforcement elements is similar to the mat which has been described above and may have identical or different characteristics.
  • the reinforcement element has bends which project below the bottom longitudinal rod, or below the bottom longitudinal rods (see elsewhere in this text). In this case, the height of these bends is preferably smaller than or equal to the thickness of the mat which is situated under the reinforcement elements in the prefabricated concrete element.
  • the reinforcement element comprises a proximal end and a distal end.
  • the proximal end and the distal end are opposite ends of the reinforcement element.
  • the proximal end is placed, for example, adjacent to a point of support in a floor where the floor rests on a column.
  • the reinforcement element comprises at least one transverse rod and at least one longitudinal rod.
  • the at least one longitudinal rod comprises a top longitudinal rod, and the at least one transverse rod is connected to the top longitudinal rod, for example by means of welded connections.
  • the at least one transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg.
  • Both the slightly slanted legs and the greatly slanted legs run obliquely upwards in the direction of the proximal end.
  • the distance between a specific leg and the proximal end is smaller at the location of the top longitudinal rod than at some distance from the top longitudinal rod.
  • the reinforcement element comprises a top longitudinal rod and a bottom longitudinal rod.
  • the distance between a specific leg and the proximal end is smaller at the location of the top longitudinal rod than at the location of the bottom longitudinal rod.
  • Both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end.
  • the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod.
  • the slightly slanted legs form an angle with the top longitudinal rod which is greater than the angle which the greatly slanted legs form with the top longitudinal rod.
  • the two outer legs at the proximal end of the transverse rod are two consecutive slightly slanted legs.
  • the two outermost legs at the proximal end are slightly slanted legs.
  • the outermost legs at the proximal end are the legs which are situated closest to the proximal end of the reinforcement element.
  • the outermost legs at the proximal end are the last legs at the proximal end.
  • these two consecutive slightly slanted legs are followed by a greatly slanted leg in the direction of the distal end.
  • the two outer legs at the proximal end of the transverse rod are two consecutive slightly slanted legs, which are immediately followed by a greatly slanted leg towards the distal end.
  • these two consecutive slightly slanted legs are made of discontinuous pieces of steel wire. This facilitates the production of such reinforcement elements.
  • the production of the reinforcement elements may furthermore be facilitated by providing exactly three consecutive slightly slanted legs.
  • the three outer legs at the proximal end of the transverse rod thus are three consecutive slightly slanted legs which are immediately followed by a greatly slanted leg towards the distal end.
  • these three consecutive slightly slanted legs are made from a continuous steel wire. This facilitates the production of such reinforcement elements.
  • the at least one transverse rod comprises several slightly slanted legs and several greatly slanted legs between the at least two consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side.
  • the consecutive slightly slanted legs at the proximal end are followed by several slightly slanted legs and several greatly slanted legs. In this way, a reinforcement element of a certain length is obtained.
  • the at least one transverse rod comprises several legs consisting of alternately one slightly slanted leg and one greatly slanted leg, which are positioned between the at least two consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side.
  • the consecutive slightly slanted legs at the proximal end are alternately followed by one greatly slanted leg and one slightly slanted leg.
  • the greatly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than 40.0° and which is smaller than 75.0°.
  • the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is smaller than 90.0° and which is at least 5.0° greater than the angle ⁇ between the greatly slanted legs and the top longitudinal rod. This improves the mechanical properties of the present reinforcement elements.
  • the longitudinal rods are parallel.
  • the angle between the slightly slanted legs and the bottom longitudinal rods is equal to the angle between the slightly slanted legs and the top longitudinal rod.
  • the angle between the greatly slanted legs and the bottom longitudinal rods is then equal to the angle between the greatly slanted legs and the top longitudinal rod.
  • the angle ⁇ which the greatly slanted legs form with the top longitudinal rod is greater than 35.0° and smaller than 60.0°, or greater than 40.0° and smaller than 50.0°.
  • the angle ⁇ which the slightly slanted legs form with the top longitudinal rod is between 70.0° and 90.0°, or between 75.0° and 89.0°, or between 80.0° and 88.0°.
  • the angle between the slightly slanted legs and the top longitudinal rod is at least 10.0°, or 15.0°, or 20.0°, or 25.0°, or 30.0°, or 40.0°, or 50.0° greater than the angle between the greatly slanted legs and the top longitudinal rod.
  • the at least two consecutive slightly slanted legs at the proximal end of the at least one transverse rod are mutually parallel within a margin of error of 1.0°.
  • all slightly slanted legs are mutually parallel within a margin of error of 1.0°. Also, in these embodiments, preferably all greatly slanted legs are mutually parallel within a margin of error of 1.0°.
  • the at least one transverse rod and/or the at least one longitudinal rod have a diameter between 1.0 mm and 20.0 mm, for example a diameter of 2.0 to 18.0 mm, or a diameter of 3.0 mm to 16.0 mm, or a diameter of 4.0 to 14.0 mm, or a diameter of 5.0 mm to 13.0 mm, or a diameter of 6.0 to 12.0 mm. Larger diameters make the reinforcement elements stronger, but require the use of additional material. Smaller diameters make it possible to use less material, but result in reduced strength.
  • the longitudinal rods and the transverse rods are made of steel, carbon, or a composite material such as glass-fibre reinforcement (for example Vrod ® , Aslan ® , Combar ® ).
  • each transverse rod between the consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side, comprises several legs consisting of alternately one slightly slanted leg and one greatly slanted leg.
  • the consecutive slightly slanted legs at the proximal end are followed by alternately one greatly slanted leg and one slightly slanted leg.
  • each transverse rod between the consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side, comprises several legs consisting of alternately one slightly slanted leg and several consecutive greatly slanted legs, for example 2, 3, or more consecutive greatly slanted legs.
  • the consecutive slightly slanted legs at the proximal end are followed by alternately several consecutive greatly slanted legs, for example 2, 3, or more consecutive greatly slanted legs, and one slightly slanted leg.
  • each transverse rod between the consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side, comprises several legs consisting of alternately one greatly slanted leg and several consecutive slightly slanted legs, for example 2, 3, or more consecutive slightly slanted legs.
  • the consecutive slightly slanted legs at the proximal end are followed by alternately one greatly slanted leg and several consecutive slightly slanted legs, for example 2, 3, or more consecutive slightly slanted legs.
  • each transverse rod between the consecutive slightly slanted legs at the proximal end on one side and the distal end on the other side, comprises several legs consisting of alternately several consecutive slightly slanted legs and several consecutive greatly slanted legs.
  • the consecutive slightly slanted legs at the proximal end are followed by alternately several consecutive greatly slanted legs and several consecutive slightly slanted legs.
  • the number of consecutive slanted legs is, for example, 2, 3, or more.
  • the reinforcement element comprises two longitudinal rods and one and only one transverse rod.
  • the reinforcement element in these embodiments comprises one transverse rod, and not more than one transverse rod.
  • the two longitudinal rods comprise a bottom longitudinal rod and a top longitudinal rod.
  • the transverse rod is connected to the top longitudinal rod and to the bottom longitudinal rod, for example by means of welded connections. In this way, the top longitudinal rod and the bottom longitudinal rod are connected to each other by means of the transverse rod.
  • the reinforcement element as described herein comprises two transverse rods, wherein both transverse rods are connected to the top longitudinal rod and/or to the bottom longitudinal rod; wherein each transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg; wherein both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end; and wherein the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod; and wherein the two outer legs at the proximal end of each transverse rod are at least two consecutive slightly slanted legs.
  • the two transverse rods are parallel to each other.
  • the transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg.
  • the reinforcement element comprises two and not more than two longitudinal rods: a top longitudinal rod and a bottom longitudinal rod.
  • the reinforcement element furthermore comprises a support rod.
  • the support rod comprises a perpendicular part and a parallel part.
  • the perpendicular part is at right angles to the longitudinal rods, for example within a margin of error of less than 10.0°, or less than 5.0°, or less than 1.0°, or less than 0.1°.
  • the parallel part is parallel to the longitudinal rods, for example within a margin of error of less than 10.0°, or less than 5.0°, or less than 1.0°, or less than 0.1°.
  • the support rod supports the reinforcement element, so that the reinforcement element can easily be put upright, for example during positioning.
  • the support rod is a branch of the bottom longitudinal rod. This simplifies the structure of the reinforcement element.
  • the support rod is a branch of the bottom longitudinal rod at the proximal end and the parallel part of the support rod is bent away from the proximal end and towards the distal end. Additionally or alternatively, a branch of the bottom longitudinal rod is bent at the distal end in order to form a support rod. In this case, the parallel part of the support rod is bent away from the distal end and towards the proximal end.
  • the support rod has a thickness which is equal to the thickness of the bottom longitudinal rod.
  • the reinforcement element comprises several support rods, for example, 2, 3, or 4 support rods. This may further simplify positioning of a reinforcement element.
  • the transverse rod comprises three consecutive slightly slanted legs at the proximal end.
  • the transverse rod is bent at several locations in order to form top bends and bottom bends.
  • the top bends project above the top longitudinal rod.
  • the fact that the top bends project above the top longitudinal rod results in an improved transmission of the forces from the transverse rods to the top longitudinal rod and to the material in which the reinforcement element is embedded. This increases the strength of floors in which the present reinforcement element is used.
  • the bends are formed as sectors of a circle and the diameter of the sectors of a circle is equal to at least 5 times the diameter of the transverse rod.
  • the bottom bends project below the bottom longitudinal rod.
  • the bottom bends project 0.5 to 5.0 cm, or 1 to 2.5 cm below the bottom longitudinal rods and/or the top bends project 0.5 to 10.0 cm, or 1 to 5 cm above the top longitudinal rods. If the bends project above or below a longitudinal rod over a distance which is greater than the average of the diameters of the longitudinal rod and the transverse rod, then an opening is formed between the longitudinal rod and the transverse rod.
  • the transverse rod intersects with the top longitudinal rod and/or the bottom longitudinal rod at two locations per bend.
  • the transverse rod is welded onto the longitudinal rods at the locations where the transverse rod intersects with the longitudinal rods.
  • the transverse rod is uninterrupted. In other words, in some embodiments, the transverse rod is continuous.
  • the longitudinal rods are uninterrupted. In other words, in some embodiments, the longitudinal rods are continuous.
  • both the transverse rod and the longitudinal rods are uninterrupted. In other words, in some embodiments, the longitudinal rods and the transverse rod are continuous.
  • the transverse rods are interrupted in the bends, where the bends project above the top longitudinal rod or below the bottom longitudinal rod.
  • the interrupted bends are formed as a hook. In this way, it is possible to achieve a simple connection with reinforcement mats and/or additional rods of the reinforcement.
  • the transverse rods are constructed as several individual rods. In other words, the transverse rods are constructed as separate rods. Each individual rod forms an individual leg. The individual legs are attached, preferably by welding, to the top longitudinal rod and the bottom longitudinal rod.
  • the longitudinal rods that is the top longitudinal rod and the bottom longitudinal rod, are mutually parallel within a margin of error of 1.0°. This improves the uniformity of the mechanical properties of the reinforcement element.
  • the reinforcement element comprises two transverse rods and at least one longitudinal rod, wherein the at least one longitudinal rod is a top longitudinal rod.
  • the reinforcement element in some embodiments, comprises two transverse rods and a top longitudinal rod. Both transverse rods are connected to the top longitudinal rod.
  • Each transverse rod comprises at least two slightly slanted legs and at least one greatly slanted leg. Both the slightly slanted legs and the at least one greatly slanted leg run obliquely upwards in the direction of the proximal end. In other words, both the greatly slanted legs and the slightly slanted legs are inclined in the direction of the proximal end.
  • the slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod.
  • the two outer legs at the proximal end of each transverse rod are at least two consecutive slightly slanted legs.
  • the two outer legs at the proximal end of each transverse rod are also the legs which are situated closest to the proximal end of the reinforcement element. In other words, the outermost legs at the proximal end are the last legs at the proximal end.
  • the reinforcement element comprises three longitudinal rods: a top longitudinal rod and two bottom longitudinal rods.
  • the three longitudinal rods are preferably arranged like the longitudinal ribs of a triangular prism.
  • the three longitudinal rods are uninterrupted.
  • the three longitudinal rods are preferably continuous.
  • the reinforcement element in some embodiments, comprises two transverse rods. Each transverse rod connects the top longitudinal rod to one of the bottom longitudinal rods.
  • a first transverse rod connects the top longitudinal rod to the first bottom longitudinal rod and a second transverse rod connects the top longitudinal rod to the second bottom longitudinal rod.
  • Each transverse rod is thus connected to the top longitudinal rod and one of the bottom longitudinal rods.
  • the bottom longitudinal rods may be connected either on the inner side or on the outer side of the transverse rods.
  • the reinforcement element comprises at least three substantially parallel longitudinal rods; the longitudinal rods comprising a top longitudinal rod and two bottom longitudinal rods, wherein each bottom longitudinal rod is connected to the top longitudinal rod by means of a transverse rod.
  • the longitudinal rods are mutually parallel within a margin of error of 1.0°. This improves the uniformity of the mechanical properties of the reinforcement element.
  • the distance between the top longitudinal rod and the first bottom longitudinal rod is equal to the distance between the top longitudinal rod and the second bottom longitudinal rod.
  • the cross section of the reinforcement element is an isosceles triangle in these embodiments. Due to their symmetrical structure, such reinforcement elements have improved mechanical properties.
  • each transverse rod comprises at least two consecutive slightly slanted legs at the proximal end.
  • the number of slightly slanted legs at the proximal end is odd, for example equal to 3, 5, 7, 9, or more.
  • each transverse rod comprises at least three slightly slanted legs and at least one greatly slanted leg.
  • the three outer legs at the proximal end of each transverse rod are three consecutive slightly slanted legs.
  • each transverse rod at the proximal end ends in at least two slightly slanted legs, preferably an odd number of slightly slanted legs, more preferably three slightly slanted legs.
  • the at least two outer legs at the proximal end are at least two consecutive slightly slanted legs.
  • an odd number of outer legs at the proximal end is an odd number of slightly slanted legs.
  • the three outer legs at the proximal end are at least three consecutive slightly slanted legs.
  • the transverse rods are bent at several locations at the location of the bottom longitudinal rods and the top longitudinal rod in order to form bends - bottom bends at the location of the bottom longitudinal rods and top bends at the location of the top longitudinal rod. More preferably, the top bends project above the top longitudinal rod and/or the bottom bends project below the bottom longitudinal rods. Because the top bends project above the top longitudinal rod, the forces of the transverse rods are transmitted to the top longitudinal rod and to the concrete in a more efficient way. This increases the strength of floors in which the present reinforcing structure is used.
  • the bottom bends project 0.0 to 7.0 cm, or 0.5 to 2.5 cm below the bottom longitudinal rods and/or the top bends project 0 to 7.0 cm, or 0.5 to 2.5 cm above the top longitudinal rods. If the bends project below or above longitudinal rods over a distance which is greater than the average of the diameters of the longitudinal rods and the transverse rods, then an opening is formed between the longitudinal rods and the transverse rods.
  • the transverse rods intersect with these in two positions per bend.
  • the transverse rods are welded onto the longitudinal rods at the locations where the transverse rods intersect with the longitudinal rods.
  • the transverse rods and/or the longitudinal rods are uninterrupted. In other words, in some embodiments, the transverse rods and/or the longitudinal rods are continuous. This facilitates the structure of the reinforcement elements and provides a good mechanical strength.
  • the transverse rods are interrupted in the bends, where the bends project above the top longitudinal rod or below a bottom longitudinal rod.
  • the interrupted bends are formed as a hook. In this way, it is possible to achieve a simple connection with reinforcement mats and/or additional rods of the reinforcement.
  • the transverse rods are provided as several individual rods. In other words, the transverse rods are provided as separate rods. Each individual rod forms an individual leg, and wherein the individual legs are attached, preferably by welding, to the top longitudinal rod and one of the bottom longitudinal rods.
  • the longitudinal rods are mutually parallel within a margin of error of 1.0°.
  • the reinforcement element comprises a transition point between the proximal end and the distal end. Between the transition point and the proximal end, the reinforcement element has a structure as described above. Between the transition point and the distal end, the reinforcement element has a structure which is the mirror image of the structure between the transition point and the proximal end. In other words: between the transition point and the distal end, both the slightly slanted legs and the greatly slanted legs run obliquely upwards in the direction of the distal end. The slightly slanted legs form an angle ⁇ with the top longitudinal rod which is greater than the angle ⁇ which the greatly slanted legs form with the top longitudinal rod.
  • the angle ⁇ is preferably equal to said angle ⁇ which the slightly slanted legs form with the top longitudinal rod between the transition point and the proximal end.
  • the angle ⁇ is preferably equal to the angle ⁇ which the greatly slanted legs form with the top longitudinal rod between the transition point and the proximal end.
  • the three outer legs at the distal end are three consecutive slightly slanted legs. In other words, the transverse rods at the distal end are bent in order to form three consecutive slightly slanted legs.
  • Such a reinforcement element is particularly useful if a floor has to be reinforced in the vicinity of two columns. After all, by laying a reinforcement element in accordance with this example between the columns, the resistance to punching failure is increased around the two columns simultaneously.
  • the at least two consecutive slightly slanted legs at the proximal end of the at least one transverse rod are mutually parallel within a margin of error of 1.0°.
  • all slightly slanted legs are mutually parallel within a margin of error of 1.0°; and/or all greatly slanted legs are mutually parallel within a margin of error of 1.0°.
  • This invention furthermore provides a method for producing a reinforcement element.
  • the reinforcement element is a reinforcement element as described herein.
  • the method comprises the following steps:
  • This invention furthermore provides a further method for producing a reinforcement element as described above.
  • the method comprises providing two longitudinal rods and a transverse rod.
  • the two longitudinal rods comprise a top longitudinal rod and a bottom longitudinal rod.
  • the transverse rod, the bottom longitudinal rod, and the top longitudinal rod comprise a proximal end and a distal end.
  • the distal and proximal ends of the transverse rods and the longitudinal rods correspond to the ends which are positioned at the distal and the proximal end of the reinforcement element, respectively.
  • the transverse rod is bent at the proximal end in order to form at least two consecutive slightly slanted legs.
  • the transverse rod is bent in order to form at least one greatly slanted leg and optionally in order to form one or several slightly slanted legs.
  • the transverse rod is bent further towards the distal end with respect to the at least two consecutive slightly slanted legs in order alternately to form one greatly slanted leg and one slightly slanted leg. How exactly the transverse rod is bent depends on the desired configuration of the reinforcement element.
  • the bending of the transverse rod is preferably performed consecutively. In other words, the bending of the transverse rod is preferably carried out bend by bend.
  • transverse rod is also attached to the top longitudinal rod and to the bottom longitudinal rod, for example by means of welding.
  • the bottom longitudinal rod and the top longitudinal rod are attached to each other with the help of the transverse rod.
  • the transverse rod is welded to the longitudinal rods at the locations where the transverse rod intersects with a longitudinal rod.
  • all bends in the transverse rod are bent first, before the transverse rod is attached to the longitudinal rods.
  • the method furthermore comprises bending a support rod.
  • the support rod is a branch of the bottom longitudinal rod.
  • the support rod and the bottom longitudinal rod are preferably made from one and the same rod.
  • the support rod comprises a perpendicular part and a parallel part.
  • the perpendicular part is bent, so that it is at right angles to the longitudinal rods, for example within a margin of error of less than 10.0°, or less than 5.0°, or less than 1.0°, or less than 0.1°.
  • the parallel part is bent, so that it is parallel to the longitudinal rods, for example within a margin of error of less than 10.0°, or less than 5.0°, or less than 1.0°, or less than 0.1°.
  • This invention furthermore provides an alternative method for producing a reinforcement element as provided herein which comprises the following steps:
  • the method comprises providing three longitudinal rods and two transverse rods.
  • the transverse rods and the longitudinal rods have a proximal end and a distal end.
  • the distal and proximal ends of the transverse rods and the longitudinal rods correspond to the ends which are positioned at the distal and proximal end of the reinforcement element, respectively.
  • the transverse rods are bent in order to form three consecutive slightly slanted legs.
  • the transverse rods are bent in order to form at least one greatly slanted leg and optionally one or more slightly slanted legs, preferably in order to form both slightly slanted legs and greatly slanted legs. How exactly the transverse rods are bent depends on the desired appearance of the reinforcement element.
  • the method furthermore comprises the step of attaching each bottom longitudinal rod to the top longitudinal rod with the help of one of the transverse rods.
  • the method comprises the step of fastening the transverse rods to the longitudinal rods.
  • Each transverse rod is fastened to the top longitudinal rod and to one of the bottom longitudinal rods.
  • the transverse rods are fastened to the longitudinal rods by means of welding.
  • the transverse rods are welded to the longitudinal rods at the locations where the transverse rods intersect with the longitudinal rods.
  • all bends in the transverse rods are bent first, before fastening the transverse rods to the longitudinal rods. However, it is also possible to alternate one or several bends and one or several fastening operations with one another.
  • the method comprises the steps:
  • At least three consecutive slightly slanted legs are formed when bending the transverse rods at the proximal end.
  • the transverse rods are bent in order alternately to form one slightly slanted leg and one greatly slanted leg. In some embodiments, the transverse rods are bent in order alternately to form one slightly slanted leg and several consecutive greatly slanted legs. In some embodiments, the transverse rods are bent in order alternately to form one greatly slanted leg and several consecutive slightly slanted legs. In some embodiments, the transverse rods are bent in order alternately to form several consecutive slightly slanted legs and several consecutive greatly slanted legs. The number of consecutive slanted legs is, for example, 3. The bending of the transverse rods is preferably performed consecutively, that is bend by bend.
  • This invention furthermore provides a reinforcing structure for limiting shear stresses and/or for limiting punching failure in a concrete floor.
  • the reinforcing structure comprises at least two reinforcement elements as provided herein.
  • the at least two reinforcement elements are preferably arranged virtually parallel or rotationally symmetrical. If the reinforcement elements are arranged rotationally symmetrical, then the reinforcement elements are preferably arranged rotationally symmetrical around a point of support.
  • a point of support is a point where a floor rests on a column or where a column rests on a floor.
  • the at least two reinforcement elements are arranged radially and/or rotationally symmetrical around a central point.
  • the central point corresponds to a point where the concrete floor is supported by a column or where the column rests on the concrete floor.
  • the reinforcing structure comprises more than two reinforcement elements, such as 3, 4, 5, 6, 8, 10, 20, 30, or more reinforcement elements.
  • the proximal ends of the at least two reinforcement elements are closer to the central point.
  • the distance between the proximal ends of the reinforcement elements and the central point is smaller than the distance between the distal ends of the reinforcement elements and the central point.
  • the proximal ends of opposite reinforcement elements are connected to each other via a bracket.
  • a bracket is a tool for connecting opposite reinforcement elements.
  • the bracket is made from a steel rod by means of 1 or more, for example 2, bending operations.
  • Opposite reinforcement elements are reinforcement elements which have been rotated around the central point through an angle of 180.0°, within a margin of error of 60.0°, or 50.0°, or 40.0°, or 30.0°, or 20.0°, or 10.0°, or 5.0°, or 1.0°, or 0.1°.
  • the bracket comprises an inwardly bent end, an outwardly bent end, and an elongate inner part.
  • the bracket is attached to two opposite reinforcement elements by means of the inwardly bent end and the outwardly bent end.
  • an object is understood to be “elongate” if the length of that object is longer than twice the width of that object; preferably the length is longer than three times, four times or five times the width of the object.
  • the bracket is connected to the proximal end of the opposite reinforcement elements by means of a mechanical connection.
  • the length of the elongate inner part corresponds to the length between the opposite reinforcement elements.
  • the inwardly bent end is an end of the bracket where the bracket is bent through an angle of between 100.0° and 170.0°, for example an angle of between 120.0° and 160.0°, or between 120.0° and 145°, or between 145.0° and 160.0°.
  • the inwardly bent end has a length of between 10.0 cm and 30.0 cm.
  • the outwardly bent end is the end of the bracket which is opposite to the inwardly bent end.
  • the outwardly bent end is bent through an angle of between 10.0° and 80.0°, for example between 30.0° and 60.0°, or between 30.0° and 45.0°, or between 45.0° and 60.0°.
  • the proximal ends of opposite reinforcement elements are connected to each other by connecting the top longitudinal rods to each other, for example by allowing the top longitudinal rod to continue as described herein.
  • the opposite reinforcement elements share the same top longitudinal rod.
  • the reinforcing structure furthermore comprises a top reinforcing layer and a bottom reinforcing layer.
  • the top reinforcing layer and the bottom reinforcing layer comprise one or several reinforcement mats. At least two reinforcement elements are arranged between the top reinforcing layer and the bottom reinforcing layer.
  • This invention furthermore provides a floor comprising a reinforcing structure as described above.
  • the floor is a concrete floor.
  • the reinforcing structure is embedded in a material containing set cement.
  • the material containing set cement is concrete.
  • This invention furthermore provides a building comprising one or several columns and a floor as described above.
  • the floor rests on the one or several columns.
  • one or several columns may also rest on the floor.
  • Each column is placed below or above a central point around which the reinforcement elements are arranged.
  • This invention furthermore provides the use of a reinforcement element as provided herein for limiting shear stresses and/or for preventing punching failure in a concrete floor which rests on a column or in a concrete floor on which a column rests.
  • Fig. 1 A-C
  • Fig. 2 Fig. 3
  • a reinforcement element 100
  • the reinforcement element (100) comprises a proximal end (110) and a distal end (120).
  • the proximal end (110) and the distal end (120) are situated at opposite ends of the reinforcement element (100).
  • the reinforcement element (100) is placed in a concrete floor, with the proximal end (110) adjacent to a point where the concrete floor rests on a column.
  • Fig. 1 (A-C), Fig. 2 and Fig. 3 (A-B) show a side view of a reinforcement element (100) in the vicinity of the proximal end (110).
  • Fig. 4 shows a top view of the reinforcement element (100) in the vicinity of the proximal end (110).
  • Fig. 5 shows a side view of the reinforcement element (100) in the vicinity of the distal end (120).
  • Fig. 6 (A-E) shows a front view of the reinforcement element (100) looking at the proximal end (110).
  • a rear view of the reinforcement element (100) looking at the distal end (120) looks similar.
  • the reinforcement element comprises a top longitudinal rod (210), optionally two bottom longitudinal rods (220), and two transverse rods (300).
  • the longitudinal rods (210,220) run in the length direction of the reinforcement element (100).
  • Each transverse rod (300) meanders between the top longitudinal rod (210) and optionally a bottom longitudinal rod (220) in order to form legs (310,320). Between consecutive legs (310,320), the transverse rods (300) are bent in order to form bends (330,340): top bends (330) and bottom bends (340).
  • Each bottom bend (340) projects below one of the bottom longitudinal rods (220).
  • Each top bend (330) projects above the top longitudinal rod (210).
  • the transverse rods (300) intersect with the longitudinal rods (210,220) at the location of the bends (330,340). At the position where the transverse rods (300) intersect with the longitudinal rods (210,220), the transverse rods (300) are welded onto the longitudinal rods (210,220).
  • Each transverse rod comprises slightly slanted legs (310) and greatly slanted legs (320). Both the slightly slanted legs (310) and the greatly slanted legs (320) slant in the direction of the proximal end (110) of the reinforcement element (100).
  • the slightly slanted legs (310) form an angle ⁇ with the longitudinal rods (210,220) which equals 85°.
  • the greatly slanted legs (320) form an angle ⁇ with the longitudinal rods (210,220) which equals 55°. Because the longitudinal rods are parallel, the angle between the slightly slanted legs and the bottom longitudinal rods is equal to the angle between the slightly slanted legs and the top longitudinal rod. Also, the angle between the greatly slanted legs and the bottom longitudinal rods is equal to the angle between the greatly slanted legs and the top longitudinal rod.
  • the longitudinal rods (210,220) and the transverse rods (300) are bent in order to form at least two and preferably three consecutive slightly slanted legs (311).
  • At least two, and preferably three, consecutive slightly slanted legs (311) limit shear stresses and/or increase the resistance to punching failure of a concrete floor in which the reinforcement element (100) is fitted.
  • the at least two, and preferably three, consecutive slightly slanted legs (311) are parallel to each other.
  • the mutual distance between the three consecutive slightly slanted legs (311) is approximately 3 to 5 times the diameter of the legs.
  • each transverse rod (300) is bent in order alternately to form greatly slanted legs (320) and slightly slanted legs (310).
  • each transverse rod (300) ends in a greatly slanted leg (320).
  • each transverse rod (300) is welded onto a bottom longitudinal rod (220).
  • FIG. 7 shows different embodiments of the present reinforcement elements (100) which are identical to the embodiment of the first example, except that the transverse rods (300) are bent in different ways between the three consecutive slightly slanted legs (311) at the proximal end (110) on one side and the distal end (120) on the other side.
  • the transverse rods (300) are bent over the entire length of the reinforcement element (100) in order alternately to form three consecutive slightly slanted legs (311) and three consecutive greatly slanted legs (321).
  • the transverse rods (300) are bent between the three consecutive slightly slanted legs (311) at the proximal end (110) on one side and the distal end (120) on the other side in order alternately to form three consecutive greatly slanted legs (321) and one slightly slanted leg (310).
  • transverse rods (300) are bent over the entire length of the reinforcement element (100), in order alternately to form three consecutive slightly slanted legs (311) and one greatly slanted leg (320).
  • Fig. 10A shows a top view of an arrangement of four reinforcement elements (100) according to Example 1 in a concrete floor which is supported by a column (600).
  • Fig. 10B shows a top view of an arrangement of six reinforcement elements (100) according to Example 1 in a concrete floor which is supported by a column (600).
  • Fig. 11A and Fig. 11B show a side view of the arrangement of reinforcement elements (100).
  • only two diametrically opposite reinforcement elements (100) are shown. However, in practice, typically more reinforcement elements are used.
  • the reinforcement elements (100) are placed around the column (600) with their proximal end (110) adjacent to the column (600).
  • An optional bracket (500) is provided which is fastened to the proximal ends (110) of diametrically opposite reinforcement elements (100).
  • the bracket (500) is a bent steel wire which spans the column (600).
  • the bracket (500) comprises bent ends (510) and an elongate inner part (530).
  • the diametrically opposite reinforcement elements (100) are connected to each other by their proximal ends (110). This connection is brought about by weaving the ends (510) of the bracket (500) between a transverse rod (300) and the top longitudinal rod (210) of the reinforcement elements (100).
  • the reinforcement elements (100) are positioned linearly around the column (600).
  • the reinforcement elements (100) may optionally be connected to each other by means of a bracket (500), as illustrated in Fig. 11A , or by allowing the top longitudinal rod to continue (600), as is illustrated in Fig. 11B .
  • Fig. 12 shows a reinforcement element (100) in which the structure of the reinforcement element (100) is mirrored around a transition point (130) which is situated in the centre of the reinforcement element (100), between the proximal end (110) and the distal end (120).
  • the reinforcement element has a structure which is identical to the structure described in Example 1: both the slightly slanted legs (310) and the greatly slanted legs (320) run obliquely upwards in the direction of the proximal end (110) and, at the proximal end (110), the transverse rods (300) are bent in order to form three consecutive slightly slanted legs (311).
  • the reinforcement element (100) has a structure which is the mirror image of the structure between the transition point (130) and the proximal end: both the slightly slanted legs (315) and the greatly slanted legs (325) run obliquely upwards in the direction of the distal end (120).
  • the slightly slanted legs form an angle ⁇ with the bottom longitudinal rods which is greater than the angle ⁇ which the greatly slanted legs form with the bottom longitudinal rods.
  • the angle ⁇ is equal to said angle ⁇ which the slightly slanted legs form with the bottom longitudinal rods between the transition point (130) and the proximal end (110).
  • the angle ⁇ is equal to the angle ⁇ which the greatly slanted legs (320) form with the bottom longitudinal rods (220) between the transition point (130) and the proximal end (110).
  • the three outer legs at the distal end (120) are three consecutive slightly slanted legs (316).
  • the transverse rods (300) at the distal end (120) are bent in order to form three consecutive slightly slanted legs (316).
  • a reinforcement element (100) according to the present example is particularly useful if a floor is to be reinforced in the vicinity of two columns. After all, by laying a reinforcement element (100) according to this example between the columns, the resistance to punching failure is increased simultaneously around the two columns.
  • Fig. 13 shows a reinforcement element (100) whose proximal ends are connected to each other.
  • FIG. 14 This figure shows four views of a reinforcement element (100) in panels a) to d).
  • panels a), b), c), and d) show a side view, a front view, a top view and a perspective view of the reinforcement element (100), respectively.
  • the reinforcement element (100) comprises a proximal end (110) and a distal end (120).
  • the proximal end (110) and the distal end (120) are situated at opposite ends of the reinforcement element (100).
  • the reinforcement element (100) is placed in a concrete floor, with the proximal end (110) adjacent to a point where the concrete floor rests on a column.
  • the reinforcement element comprises a top longitudinal rod (210), a bottom longitudinal rod (220) and a transverse rod (300).
  • the longitudinal rods (210,220) run in the length direction of the reinforcement element (100).
  • the transverse rod (300) meanders between the top longitudinal rod (210) and the bottom longitudinal rod (220) in order to form legs (310,320). Between consecutive legs (310), the transverse rod (300) is bent in order to form bends (330,340): top bends (330) and bottom bends (340). Each bottom bend (340) projects below the bottom longitudinal rod (220). Each top bend (330) projects above the top longitudinal rod (210). In this way, the transverse rod (300) intersects with the longitudinal rods (210,220) at the location of the bends (330,340). At the position where the transverse rod (300) intersects with the longitudinal rods (210,220), the transverse rod (300) is welded onto the longitudinal rods (210,220).
  • the transverse rod (300) comprises slightly slanted legs (310) and greatly slanted legs (320). Both the slightly slanted legs (310) and the greatly slanted legs (320) slant in the direction of the proximal end (110) of the reinforcement element (100).
  • the slightly slanted legs (310) form an angle ⁇ with the longitudinal rods (210,220) which equals 85°.
  • the greatly slanted legs (320) form an angle ⁇ with the longitudinal rods (210,220) which equals 55°. Because the longitudinal rods are parallel, the angle between the slightly slanted legs and the bottom longitudinal rod is equal to the angle between the slightly slanted legs and the top longitudinal rod. Also, the angle between the greatly slanted legs and the bottom longitudinal rod is equal to the angle between the greatly slanted legs and the top longitudinal rod.
  • the longitudinal rods (210,220) and the transverse rod (300) end at both the proximal end (110) and the distal end (120).
  • the transverse rod (300) ends in particular at the location of the top longitudinal rod (210).
  • the transverse rod ends at the location of the bottom longitudinal rod (220).
  • the transverse rod (300) is bent in order to form at least two consecutive slightly slanted legs (311).
  • the at least two consecutive slightly slanted legs (311) limit shear stresses and/or increase the resistance to punching failure of a concrete floor in which the reinforcement element (100) is fitted.
  • the at least two consecutive slightly slanted legs (311) are parallel to each other.
  • the mutual distance between the at least two consecutive slightly slanted legs (311) is approximately 3 to 5 times the diameter of the legs.
  • greatly slanted legs (320) and slightly slanted legs (310) alternate.
  • the transverse rod (300) is bent in order alternately to form greatly slanted legs (320) and slightly slanted legs (310).
  • the transverse rod (300) ends with a greatly slanted leg (320).
  • the transverse rod (300) is welded onto the bottom longitudinal rod (220).
  • a branch of the bottom longitudinal rod (220) is bent at the proximal end (110) in order to form a support rod (400).
  • the support rod (400) comprises a perpendicular part (410) and a parallel part (420).
  • the perpendicular part (410) is at right angles to the longitudinal rods (210,220).
  • the parallel part (420) is parallel to the longitudinal rods (210,220) and is bent away from the proximal end (110) and towards the distal end (120).
  • a branch of the bottom longitudinal rod is bent at the distal end in order to form a support rod. In this case, the parallel part of the support rod is bent away from the distal end and towards the proximal end.
  • Fig. 18 shows the reinforcement element according to Fig. 14 wherein the reinforcement element comprises two transverse rods.
  • FIG. 15 This figure comprises three panels a), b), and c), and shows how two reinforcement elements (101, 102), a first reinforcement element (101) and a second reinforcement element (102), have been positioned one behind the other.
  • FIG. 16 This figure comprises three panels a), b), and c), and shows how different reinforcement elements (103, 104, 105) have been positioned next to one another in order to form a stack (140).
  • Fig. 17 shows a side view of an arrangement of reinforcement elements (100). For the sake of clarity, only two diametrically opposite reinforcement elements (100) are shown. A mat (not shown) lies over the reinforcement elements (100). Depending on the expected load on the column, it may be useful to provide additional reinforcement. In the case of a relatively high load, additional reinforcement rods (not shown) may be provided on top of and over the column (400). These additional reinforcement rods do not necessarily have to be connected to the reinforcement elements (100). The reinforcement elements (100), the mat and the additional reinforcement rods are embedded in concrete. Via this concrete, the forces acting on the top longitudinal rod are transmitted to the additional reinforcement rods, which in turn transmit these forces to opposite reinforcement elements (400).

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Claims (15)

  1. Élément d'armature (100) comprenant une extrémité proximale (110), une extrémité distale (120), au moins une barre transversale (300), et au moins une barre longitudinale (210, 220), l'au moins une barre longitudinale (210, 220) comprenant une barre longitudinale supérieure (210), et l'au moins une barre transversale (300) étant raccordée à la barre longitudinale supérieure (210) ;
    - l'au moins une barre transversale (300) comprenant au moins deux membres légèrement inclinés (310) et au moins un membre fortement incliné (320) ; à la fois les membres légèrement inclinés (310) et l'au moins un membre fortement incliné (320) s'étendant obliquement vers le haut dans la direction de l'extrémité proximale (110) ; et les membres légèrement inclinés (310) formant un angle α avec la barre longitudinale supérieure (210) qui est supérieur à l'angle β que les membres fortement inclinés (320) forment avec la barre longitudinale supérieure (210) ;
    - et caractérisé en ce que les deux membres extérieurs au niveau de l'extrémité proximale de l'au moins une barre transversale (300) sont au moins deux membres légèrement inclinés consécutifs (311).
  2. Élément d'armature (100) selon la revendication 1, comprenant deux barres longitudinales (210, 220), et une seule barre transversale (300), les deux barres longitudinales (210, 220) comprenant la barre longitudinale supérieure (210) et une barre longitudinale inférieure (220),
    - dans lequel la barre transversale (300) est raccordée à la barre longitudinale supérieure (210) et à la barre longitudinale inférieure (220) ;
    l'élément d'armature comprenant, éventuellement, une barre de support (400), la barre de support comprenant une partie perpendiculaire (410) et une partie parallèle (420), la partie perpendiculaire (410) étant à angle droit par rapport aux barres longitudinales (210, 220), et la partie parallèle (420) s'étendant parallèlement aux barres longitudinales (210, 220).
  3. Élément d'armature (100) selon la revendication 1 ou 2, dans lequel la barre transversale (300) comprend plusieurs membres légèrement inclinés (310) et plusieurs membres fortement inclinés (320) entre trois membres légèrement inclinés consécutifs (311) au niveau de l'extrémité proximale (110) d'un côté et de l'extrémité distale (120) de l'autre côté ;
    éventuellement dans lequel la barre transversale (300) est coudée à plusieurs endroits afin de former des coudes supérieurs (330) et des coudes inférieurs (340), dans lequel les coudes supérieurs (330) font saillie au-dessus de la barre longitudinale supérieure (210), et éventuellement dans lequel les coudes inférieurs (340) font saillie en dessous de la barre longitudinale inférieure (220).
  4. Élément d'armature (100) selon la revendication 2 ou 3, dans lequel la barre transversale (300) et/ou les barres longitudinales (210, 220) sont ininterrompues ; éventuellement dans lequel les barres longitudinales (210, 220) sont mutuellement parallèles avec une marge d'erreur de 1,0°.
  5. Élément d'armature (100) selon la revendication 1, comprenant deux barres transversales (300), dans lequel les deux barres transversales (300) sont raccordées à la barre longitudinale supérieure (210) ;
    - dans lequel chaque barre transversale (300) comprend au moins deux membres légèrement inclinés (310) et au moins un membre fortement incliné (320) ; dans lequel à la fois les membres légèrement inclinés (310) et l'au moins un membre fortement incliné (320) s'étendent obliquement vers le haut dans la direction de l'extrémité proximale (110) ; et dans lequel les membres légèrement inclinés (310) forment un angle α avec la barre longitudinale supérieure (210) qui est supérieur à l'angle β que les membres fortement inclinés (320) forment avec la barre longitudinale supérieure (210) ;
    - et dans lequel les deux membres extérieurs au niveau de l'extrémité proximale de chaque barre transversale (300) sont au moins deux membres légèrement inclinés consécutifs (311) ;
    comprenant éventuellement au moins trois barres longitudinales (210, 220) sensiblement parallèles; les barres longitudinales (210, 220) comprenant une barre longitudinale supérieure (210) et deux barres longitudinales inférieures (220), dans lequel chaque barre longitudinale inférieure (220) est raccordée à la barre longitudinale supérieure (210) par le biais d'une barre transversale (300).
  6. Élément d'armature (100) selon la revendication 5, dans lequel chaque barre transversale (300) comprend au moins trois membres légèrement inclinés (310) et au moins un membre fortement incliné (320) ; et dans lequel les trois membres extérieurs au niveau de l'extrémité proximale de chaque barre transversale (300) sont trois membres légèrement inclinés consécutifs (311), éventuellement dans lequel chaque barre transversale (300) comprend plusieurs membres légèrement inclinés (310) et plusieurs membres fortement inclinés (320) entre les trois membres légèrement inclinés consécutifs (311) au niveau de l'extrémité proximale (110) et de l'extrémité distale (120).
  7. Élément d'armature (100) selon la revendication 5 ou 6, dans lequel les barres transversales (300) sont coudées à plusieurs endroits afin de former des coudes supérieurs (330) et des coudes inférieurs (340), dans lequel les coudes supérieurs (330) font saillie au-dessus de la barre longitudinale supérieure (210), et éventuellement dans lequel les coudes inférieurs (340) font saillie en dessous des barres longitudinales inférieures (220).
  8. Élément d'armature (100) selon la revendication 6 ou 7, dans lequel les barres transversales (300) et/ou les barres longitudinales (210, 220) sont ininterrompues ; éventuellement dans lequel les barres longitudinales sont mutuellement parallèles avec une marge d'erreur de 1,0°.
  9. Élément d'armature (100) selon l'une quelconque des revendications 1 à 8, l'élément d'armature comprenant un point de transition (130) entre l'extrémité proximale (110) et l'extrémité distale (120), l'élément d'armature (100) comprenant des membres légèrement inclinés supplémentaires (315) et des membres fortement inclinés supplémentaires (325) entre le point de transition (130) et l'extrémité distale (120), les membres légèrement inclinés supplémentaires (315) et les membres fortement inclinés supplémentaires (325) s'étendant obliquement vers le haut dans la direction de l'extrémité distale (120), les membres légèrement inclinés (310) formant un angle α avec les barres longitudinales inférieures (220) qui est supérieur à l'angle β que les membres fortement inclinés (320) forment avec les barres longitudinales inférieures (220), et les trois membres extérieurs extrêmes au niveau de l'extrémité distale (120) étant trois membres légèrement inclinés consécutifs (316).
  10. Élément d'armature (100) selon l'une quelconque des revendications 1 à 9,
    - dans lequel les membres fortement inclinés (320) forment un angle β avec la barre longitudinale supérieure (210) qui est supérieur à 40,0° et qui est inférieur à 75,0° ; et
    - dans lequel les membres légèrement inclinés (310) forment un angle α avec la barre longitudinale supérieure (210) qui est inférieur à 90,0° et qui est supérieur d'au moins 5,0° à l'angle β entre les membres fortement inclinés (320) et la barre longitudinale supérieure (210).
  11. Élément d'armature (100) selon l'une quelconque des revendications 1 à 10, dans lequel les au moins deux membres légèrement inclinés consécutifs (311) au niveau de l'extrémité proximale (110) de l'au moins une barre transversale (300) sont mutuellement parallèles avec une marge d'erreur de 1,0° ;
    éventuellement dans lequel tous les membres légèrement inclinés (310) sont mutuellement parallèles avec une marge d'erreur de 1,0° ; et dans lequel tous les membres fortement inclinés (310) sont mutuellement parallèles avec une marge d'erreur de 1,0°.
  12. Procédé de production d'un élément d'armature (100) selon l'une quelconque des revendications précédentes, le procédé comprenant les étapes suivantes :
    - préparer au moins une barre longitudinale (210, 220) et au moins une barre transversale (300), l'au moins une barre transversale (300) et l'au moins une barre longitudinale (210, 220) comprenant chacune une extrémité proximale et une extrémité distale et l'au moins une barre longitudinale (210, 220) comprenant une barre longitudinale supérieure (220) ;
    - couder l'au moins une barre transversale (300) au niveau de l'extrémité proximale afin de former au moins deux membres légèrement inclinés consécutifs (311) ;
    - plus avant dans la direction de l'extrémité distale par rapport aux au moins deux membres légèrement inclinés consécutifs (311), couder l'au moins une barre transversale (300) afin de former au moins un membre fortement incliné (320) et éventuellement un ou plusieurs membres légèrement inclinés (310) ;
    - attacher la barre transversale à la barre longitudinale supérieure (210).
  13. Procédé de production d'un élément d'armature (100) selon la revendication 12, le procédé comprenant les étapes suivantes :
    - préparer, en outre, une barre longitudinale inférieure (220) comprenant une extrémité proximale et une extrémité distale ;
    - attacher, en outre, la barre transversale à la barre longitudinale inférieure (220), de façon à attacher ainsi la barre longitudinale inférieure (220) à la barre longitudinale supérieure (210) à l'aide de la barre transversale (300).
  14. Procédé selon la revendication 12, comprenant les étapes suivantes :
    - préparer une barre transversale supplémentaire (300), la barre transversale supplémentaire (300) comprenant une extrémité proximale et une extrémité distale ;
    - couder la barre transversale supplémentaire (300) au niveau de l'extrémité proximale afin de former au moins deux membres légèrement inclinés consécutifs (311) ;
    - plus avant dans la direction de l'extrémité distale par rapport aux au moins deux membres légèrement inclinés consécutifs (311), couder la barre transversale supplémentaire (300) afin de former au moins un membre fortement incliné (320) et éventuellement un ou plusieurs membres légèrement inclinés (310) ;
    - attacher la barre transversale supplémentaire (300) à la barre longitudinale supérieure (210).
  15. Utilisation d'un élément d'armature selon l'une quelconque des revendications 1 à 11 pour limiter des efforts tranchants et/ou empêcher une rupture par poinçonnement dans un plancher en béton qui repose sur une colonne ou dans un plancher en béton sur lequel repose une colonne.
EP19159904.2A 2018-03-01 2019-02-28 Élément d'armature Active EP3533946B1 (fr)

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BE2018/5121A BE1026060B1 (nl) 2018-03-01 2018-03-01 Versterkingselement
BE2018/5732A BE1025767B1 (nl) 2018-03-01 2018-10-23 Versterkingselement

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EP3533946B1 true EP3533946B1 (fr) 2023-02-22

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300436A (en) * 1995-05-04 1996-11-06 Univ Sheffield Shear reinforcement for reinforced concrete

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702392A2 (de) * 2009-12-03 2011-06-15 Fischer Rista Ag Bewehrungsvorrichtung.
PL2698484T3 (pl) * 2012-08-13 2015-03-31 Filigran Traegersysteme Gmbh & Co Kg Podparty punktowo strop betonowy płaski lub z elementów
RU2637668C1 (ru) * 2016-07-04 2017-12-06 Федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" (СамГТУ) Арматурный каркас для многопролетных железобетонных балок

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300436A (en) * 1995-05-04 1996-11-06 Univ Sheffield Shear reinforcement for reinforced concrete

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EP3533946A1 (fr) 2019-09-04
BE1025767B1 (nl) 2019-07-03
BE1026060B1 (nl) 2019-10-01
BE1026060A1 (nl) 2019-09-25

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