EP1795667A2 - Elément d'armature pour structures en béton armé, béton précontraint ou similaires - Google Patents

Elément d'armature pour structures en béton armé, béton précontraint ou similaires Download PDF

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Publication number
EP1795667A2
EP1795667A2 EP06024184A EP06024184A EP1795667A2 EP 1795667 A2 EP1795667 A2 EP 1795667A2 EP 06024184 A EP06024184 A EP 06024184A EP 06024184 A EP06024184 A EP 06024184A EP 1795667 A2 EP1795667 A2 EP 1795667A2
Authority
EP
European Patent Office
Prior art keywords
reinforcing element
reinforcing
element according
longitudinal axis
bars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06024184A
Other languages
German (de)
English (en)
Other versions
EP1795667A3 (fr
Inventor
Utz Dr-Ing Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
nolasoft Ingenieurgemeinschaft Ozbolt
Original Assignee
nolasoft Ingenieurgemeinschaft Ozbolt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by nolasoft Ingenieurgemeinschaft Ozbolt filed Critical nolasoft Ingenieurgemeinschaft Ozbolt
Publication of EP1795667A2 publication Critical patent/EP1795667A2/fr
Publication of EP1795667A3 publication Critical patent/EP1795667A3/fr
Withdrawn legal-status Critical Current

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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 [3D] extent, e.g. lattice girders
    • 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
    • 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 [3D] extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal

Definitions

  • the present invention relates to a reinforcing element for structures made of reinforced concrete, prestressed concrete or the like according to the preamble of claim 1.
  • Reinforcement arrangements generally distinguish between limp and prestressed reinforcement. Sleepy reinforcement has the advantage that it can be installed comparatively easily, since it requires no bias. However, the effectiveness of limp reinforcement is limited. In contrast, prestressed reinforcement usually has a higher effectiveness than sagging reinforcement, but this is associated with an increased effort, since the reinforcement must be pre-stressed before or after the curing of the surrounding concrete. Furthermore occur in prestressed reinforcement by time or temperature-dependent deformations of the concrete in the As a rule, loss of clamping force can affect the effectiveness of the reinforcement.
  • the invention is therefore an object of the invention to provide a reinforcing element for structures made of reinforced concrete, prestressed concrete or the like, which can be installed with little effort and at the same time allows a high load capacity of the structure.
  • the present invention is based on the idea to provide a reinforcing element with a prestressing-like bearing effect, without the reinforcing element having to be actively prestressed.
  • the invention provides that the reinforcing bars each extend spirally around a longitudinal axis, and that the reinforcing bars are each interwoven with at least one other reinforcing bar.
  • interwoven is to be understood as meaning that the reinforcing rods preferably intersect one another several times and can also pass over one another and one another in the manner of a fabric. It is not necessary that the reinforcing bars are non-positively connected (eg welded). Rather, there is a particularly advantageous structural behavior when the reinforcing bars can slide along each other at least at high loads.
  • the opposite "normal" (one-dimensional) reinforcement which is primarily used to absorb tensile forces in steel and prestressed concrete components, offers the following advantages.
  • this leads through their geometric arrangement to a "contraction" of the reinforcing element and thus to deflecting forces that press on the concrete surrounded by the reinforcing concrete or are in balance with the concrete.
  • This effect corresponds to a passive spatial bias, in which no external forces (preload) must be applied to the reinforcement.
  • the reinforcing rods extend in the context of the present invention, as mentioned above, spirally around a longitudinal axis. It is not to be understood spirally that the reinforcing bars must have a constant radius of curvature. Rather, the reinforcing element according to the invention, for example, in a cross section perpendicular to the longitudinal axis have a variety of forms. However, in the context of the present invention, it is preferred in terms of advantageous carrying behavior that the reinforcing element in the cross section perpendicular to the longitudinal axis circumscribes a substantially circular, oval or rectangular cross section.
  • the interwoven rebars may, in principle, intersect at any angle within the scope of the present invention.
  • a particularly pronounced Hooping effect of the concrete by the reinforcing element is obtained, however, when the woven reinforcing bars cross each other at an angle in the range of 10 ° to 80 °, preferably in the range of 20 ° to 70 ° according to a development of the present invention.
  • the reinforcing element according to the invention can in principle have a straight longitudinal axis, for example if it is to be used in linear or planar components such as beams, columns, plates or the like.
  • the longitudinal axis is curved according to an embodiment of the present invention.
  • the use of a curved reinforcing element allows, for example, in load introduction areas of flat components an advantageous structural behavior.
  • the reinforcing element according to an embodiment of the invention may be designed in the manner of a rounded or polygonal torus, which is preferably closed in itself. This results in a reinforcing element, which produces a Umschnürungs Koch not only in its interior, but also in the area surrounded by the torus, which brings a correspondingly advantageous structural behavior with it.
  • the number of interwoven rebars is not particularly limited in the present invention. However, a pronounced increase in the banding effect produced by the reinforcing element can be observed if the reinforcing element according to an embodiment of the present invention has at least four woven reinforcing bars.
  • Such ribbed reinforcing bars can also be used in the context of the present invention.
  • at least one of the interwoven reinforcing bars has a substantially smooth surface. This is because in the context of the present invention, a completely different support principle prevails than in conventional reinforcement.
  • a smooth surface of the reinforcing elements allows early and pronounced activation of the reinforcing elements under tensile stress with a correspondingly high strapping effect and advantageous load-bearing behavior.
  • the reinforcing bars may be known, smooth or ribbed concrete bars.
  • at least one of the reinforcing bars consists of a fiber composite material.
  • the reinforcing elements in the context of the present invention may also consist of other suitable materials.
  • the reinforcing element according to the invention can advantageously be combined both ex factory and on site at the construction site with other optionally conventional reinforcing elements. It is provided according to a development of the present invention that within the reinforcing element connecting elements, in particular S-hooks, are provided, which extend substantially perpendicular to the longitudinal axis. This results in a stiffening of the reinforcing element in the transverse direction, resulting in a further improved confinement of the concrete contained within the reinforcing element.
  • the reinforcing element may further comprise at least one longitudinal bar which extends substantially parallel to the longitudinal axis. This arrangement allows a improved anchoring of the reinforcing elements perpendicular to the longitudinal axis and gives the reinforcing element improved carrying properties under bending and compressive stresses.
  • the anchoring of the reinforcing element according to the invention in concrete can be done at its free ends in principle by observing conventional anchoring lengths.
  • at least one of the interwoven reinforcing bars in the region of at least one free end has a Enverank ceremoniesselement.
  • Such an end anchoring element may, for example, be headed bolts, head plates, welded cross bars or the like.
  • the reinforcing element according to the invention is suitable in principle for use in any type of structure made of reinforced concrete, prestressed concrete or the like.
  • the reinforcing element according to the invention has proved to be particularly advantageous as a transverse force reinforcement and / or tensile reinforcement in reinforced concrete or prestressed concrete structures.
  • the reinforcing element according to the invention can be used individually or in combination with other inventive or other reinforcing elements. It has proven to be advantageous in terms of the supporting behavior, if the at least one reinforcing element is connected to at least one adjacent reinforcing element by a reinforcing bar.
  • a particularly preferred example of a structure, in which the reinforcing element according to the invention can be used, is a so-called flat ceiling, ie a non-conductor construction in which the ceiling rests directly on the supports.
  • a particularly critical area of such constructions is the transitional area between the ceiling and the support, where due to the concentrated introduction of force there is the danger of a so-called puncturing.
  • a variety of different reinforcing elements has been developed, such as inclined rods, head bolts, Stahlkrägen etc.
  • the reinforcing element according to the invention offers here a solution to significantly increase the carrying capacity of a flat ceiling in the ceiling-column connection in a simple and efficient manner.
  • the reinforcing element can be arranged between the respective bending reinforcing layers, which results in a particularly simple and rapid production process, which clearly stands out from the known production methods.
  • the longitudinal axis of the at least one reinforcing element extends substantially parallel to the plane of the flat ceiling. Furthermore, there is a particularly concentrated stress state and thus an increased carrying capacity, when the at least one reinforcing element extends annularly around the respective support.
  • concrete is provided within the at least one reinforcing element at least in sections, which contains swelling cement.
  • swelling cement By providing swelling cement, the effect of a "passive" prestressing discussed above is particularly pronounced, since the reinforcing element is put into a prestressed state without the application of external forces by the swelling cement, thus giving it a tightening effect already in the unloaded state of the structure.
  • the reinforcing element according to the invention can in principle be produced on the construction site or at any desired location. However, it has proven to be particularly economical and simple if the reinforcing element is manufactured at the factory ("by the meter") and cut to the desired length before installation (for example on the construction site).
  • Fig. 1 shows schematically various perspective views of a reinforcing element 1 as a preferred embodiment of the present invention.
  • the reinforcing element 1 is used for reinforcement of a variety of structures made of reinforced concrete, prestressed concrete or the like and comprises in the present embodiment, five reinforcing bars 2. These reinforcing bars 2 each extend spirally about an imaginary longitudinal axis 4 schematically shown in Fig. 1. In this case, the reinforcing bars 2 are interwoven with each other, i. in the manner of a fabric mutually superimposed and under each other.
  • the reinforcing element 1 shown in FIG. 1 circumscribes a substantially circular cross section in a cross section perpendicular to the longitudinal axis 4 in the present embodiment.
  • the cross-sectional shape of the reinforcing element according to the invention is not limited thereto, but also other types such as oval or rectangular are possible.
  • the interwoven reinforcing bars 2 cross each other at an angle ⁇ , which illustrates in Fig. 1 below is.
  • the crossing angle ⁇ in the present embodiment is about 60 ° and should preferably be in any case in a range of 10 ° to 80 °, particularly preferably 20 ° to 70 °.
  • the reinforcing bars 2 may in principle be any shaped bars made of any suitable material. In the present embodiment, however, the reinforcing bars 2 are formed of reinforcing steel having a substantially smooth (at least not ribbed) surface.
  • Fig. 2 schematically shows perspective views of a reinforcing element 1 according to a second embodiment of the present invention.
  • This differs from the embodiment shown in Fig. 1 on the one hand by the higher number of (six) reinforcing bars 2, but in particular by the fact that the longitudinal axis (not explicitly shown in Fig. 2) is curved in this embodiment.
  • the reinforcing element may be formed as a partial or complete (self-contained) torus.
  • this torus does not have to be circular, but may for example also be square or polygonal executed.
  • FIG. 4 A fourth preferred embodiment of the reinforcing element according to the invention is shown schematically in FIG. 4. This is characterized in that inside the reinforcing element 1 connecting elements 6 are provided, which in the present embodiment have the shape of S-hooks (see above in Fig. 4). In this case, as can be seen below in FIG. 4, the S-hooks extend essentially perpendicular to the longitudinal axis (which extends substantially perpendicular to the plane of the drawing in FIG. 4 below) and thus reinforce the reinforcing element in the transverse direction.
  • Fig. 5 shows a perspective view of a fifth preferred embodiment of the reinforcing element according to the invention.
  • This is characterized in that in the present embodiment, it has two longitudinal bars 8, which extend substantially parallel to the longitudinal axis (not shown here) of the reinforcing element 1.
  • These reinforcing bars may also be smooth or possibly also ribbed reinforcing bars.
  • the longitudinal bars 8 are arranged on the outer circumference of the reinforcing element 1. It is also possible within the scope of the present invention to provide the longitudinal bars 8 in the interior of the mutually interwoven reinforcing bars 2 (see Fig. 5 below).
  • FIG. 6 schematically shows a perspective view of a sixth embodiment of the present invention, in which a plurality of reinforcing elements 1 are connected to each other by a connecting rod 9.
  • the connecting rod may also be conventional reinforcing bars.
  • a flat steel element 9 is used as a connecting rod.
  • the reinforcing element according to the invention can be used in a wide variety of types of structures.
  • a first application example is shown in Fig. 7, which illustrates a reinforced concrete support 10 (see Fig. 7 below) reinforced with a corresponding reinforcing element 1 (see above in Fig. 7).
  • FIG. 8 A further, particularly advantageous embodiment of a framework to be produced in the context of the present invention is illustrated in FIG. 8.
  • structure 10 is a so-called flat ceiling, ie a blanket that rests directly on supports 12 without beams or the like.
  • Fig. 8 shows below a partial section of a flat ceiling, along Symmetryeachsen was cut through the support 12 therethrough.
  • the position of the reinforcing elements 1 within the flat ceiling are shown in Fig. 8 below by the part-annular recesses shown there.
  • the reinforcing elements 1 themselves are shown in FIG. 8 at the top, together with two bending reinforcement layers 14.
  • the reinforcing elements 1 extend substantially parallel to the plane of the flat ceiling and substantially annular or annular segment around the support 12 around are arranged. In the context of the present invention, however, a variety of other reinforcement arrangements are possible in which the reinforcing elements 1 are arranged, for example, as a plurality of rectilinear pieces in the region of the support.
  • FIG. 9 shows a bending beam 10 which is provided with two reinforcing elements 1.
  • the reinforcing element 1 according to the invention acts both as a bending and as a transverse force reinforcement.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP06024184.1A 2005-12-06 2006-11-22 Elément d'armature pour structures en béton armé, béton précontraint ou similaires Withdrawn EP1795667A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520019077 DE202005019077U1 (de) 2005-12-06 2005-12-06 Bewehrungselement für Tragwerke aus Stahlbeton, Spannbeton od.dgl.

Publications (2)

Publication Number Publication Date
EP1795667A2 true EP1795667A2 (fr) 2007-06-13
EP1795667A3 EP1795667A3 (fr) 2013-06-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06024184.1A Withdrawn EP1795667A3 (fr) 2005-12-06 2006-11-22 Elément d'armature pour structures en béton armé, béton précontraint ou similaires

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EP (1) EP1795667A3 (fr)
DE (1) DE202005019077U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020256559A1 (fr) * 2019-06-20 2020-12-24 Engelman Christopher Bernard Hendrik Poutre de support dotée d'un ferraillage

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008012547U1 (de) * 2008-09-23 2010-02-11 Ancotech Ag Anordnung zum Bewehren eines Betonbauwerkes gegen Durchstanzen im Bereich der Auflage eines Deckenelementes auf einer Stütze sowie Durchstanzbewehrungselement hierfür
DE102015106294A1 (de) * 2015-04-23 2016-10-27 Schöck Bauteile GmbH Vorrichtung und Verfahren zur Wärmeentkopplung von betonierten Gebäudeteilen
EP3705657B1 (fr) 2019-03-05 2022-06-22 CarboCon GmbH Structure de renfort textile pour un composant, procédé de fabrication pour une structure de renfort, composant et pièce semi-finie
DE102019105493A1 (de) * 2019-03-05 2020-09-10 CarboCon GmbH Textile Bewehrungsstruktur für ein Bauteil, Herstellungsverfahren für eine Bewehrungsstruktur, Bauteil und Halbfertigteil
DE102019126608B4 (de) 2019-10-02 2022-12-22 Technische Universität Dresden Stützvorrichtung und Verfahren zur Herstellung einer textilen Querkraftbewehrung und Betonbauteil
DE102024100572A1 (de) * 2024-01-10 2025-07-10 Carbon 360 GmbH Textiles, nichtmetallisches Bewehrungselement, Verfahren zur Herstellung hiervon und Formkörperträger zur Verwendung dabei, sowie Bauteil, Halbfertigteil, Fertigteil und deren Verwendung

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CH103836A (de) * 1923-01-18 1924-03-01 Int Siegwartbalken Ges Armierung für röhrenförmige Betonkörper.
DE829784C (de) * 1949-10-20 1952-01-28 Viktor Kupferschmid Dr Ing Zugfeste und biegungsfeste Verbindung von Stahlbeton-Fertigteilen
GB1465620A (en) * 1974-06-15 1977-02-23 Stressed Pipe Res Inc Reinforcing cages for concrete pipes
DE2646272A1 (de) * 1976-10-14 1978-04-20 Dyckerhoff & Widmann Ag Verwendung einer zylindermantelfoermigen bewehrungseinheit zur herstellung eines rohrfoermigen hohlkoerpers aus spannbeton
AT378217B (de) * 1983-03-21 1985-07-10 Avi Alpenlaendische Vered Schubbewehrungselement
DK0414485T3 (da) * 1989-08-21 1993-12-20 Square Grip Ltd Armering af forskydningshoved
SE467788B (sv) * 1989-12-04 1992-09-14 Paalgruppen Geomekan Ab Saett att tillverka armering foer betongelement, foeretraedesvis betongpaalar, armering och stoettorgan ingaaende i dylik samt betongelement med dylik armering
CH691608A5 (de) * 1996-08-28 2001-08-31 Sacac Hergiswil Ag Rohr- und/oder stabförmige faserverstärkte Konstruktionen.
EP0928859A1 (fr) * 1998-01-13 1999-07-14 Pecon AG Armature de cisaillement
JP2004520539A (ja) * 2000-07-28 2004-07-08 ブリガム・ヤング・ユニバーシティ 等トラス構造体
US20050055933A1 (en) * 2003-09-03 2005-03-17 Dow Richard M. Woven metallic reinforcement and method of fabricating same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020256559A1 (fr) * 2019-06-20 2020-12-24 Engelman Christopher Bernard Hendrik Poutre de support dotée d'un ferraillage

Also Published As

Publication number Publication date
DE202005019077U1 (de) 2007-04-19
EP1795667A3 (fr) 2013-06-12

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