EP1669508A1 - Treillis d'armature pour béton armé - Google Patents

Treillis d'armature pour béton armé Download PDF

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Publication number
EP1669508A1
EP1669508A1 EP05026428A EP05026428A EP1669508A1 EP 1669508 A1 EP1669508 A1 EP 1669508A1 EP 05026428 A EP05026428 A EP 05026428A EP 05026428 A EP05026428 A EP 05026428A EP 1669508 A1 EP1669508 A1 EP 1669508A1
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EP
European Patent Office
Prior art keywords
wires
longitudinal
edge
reinforcing mat
central region
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Withdrawn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
EP05026428A
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German (de)
English (en)
Inventor
Klaus Dipl.-Ing. Ritter
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.)
AVI Alpenlaendische Veredelungs Industrie GmbH
Original Assignee
AVI Alpenlaendische Veredelungs Industrie GmbH
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 AVI Alpenlaendische Veredelungs Industrie GmbH filed Critical AVI Alpenlaendische Veredelungs Industrie GmbH
Publication of EP1669508A1 publication Critical patent/EP1669508A1/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Withdrawn legal-status Critical Current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
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/04—Mats

Definitions

  • the invention relates to a reinforcing mat for reinforced concrete, consisting of mutually perpendicular crossing and welded together at the crossing points longitudinal and transverse wires, wherein the projecting beyond the edge longitudinal wires Querdrahtendmaschine are bent back in the plane of the mat in the form of a loop to the edge longitudinal wires and welded to them.
  • a reinforcing mat of this type is used to reinforce flat surface structures in which forces are in two mutually perpendicular directions, i. in the longitudinal and transverse directions according to the intersecting wire coulters of the reinforcing mats, are to be transmitted.
  • the reinforcing mats are known in a variety of different configurations in order to be able to be adapted as well as possible to the great variety of reinforcing structures to be reinforced with different dimensions and especially different required steel cross-sections related to the reinforcement directions. Since the reinforced concrete parts to be reinforced regularly have a greater width than the reinforcing mats, the reinforcing mats must be laid side by side with overlap. Here, certain minimum overlaps for static reasons are required to ensure the power flow from reinforcing mat to reinforcing mat.
  • a reinforcing mat of the initially mentioned type is known in which the two outer longitudinal elements, the so-called edge elements, at each mat edge smaller center distance from one another than the other longitudinal elements.
  • the loop-shaped bent-back cross-wire end parts are welded to one of the two edge-longitudinal elements, preferably to the outer or to both edge-longitudinal elements, at each edge of the mat.
  • the two Randlteilsetti are arranged at a distance which is substantially smaller than the distance of the other longitudinal elements.
  • the distance between the inner longitudinal edge element and the adjacent longitudinal element of the inner region of the reinforcing mat is greater than the uniform mutual distance of the longitudinal elements in the inner region of the reinforcing mat.
  • the two edge elements have smaller cross-sectional areas than the other longitudinal elements in the interior of the reinforcing mat.
  • the reinforcing mat can also have for each mat edge an additional pair of edge elements whose mutual distance is smaller than the distance of the other longitudinal elements.
  • Square mesh reinforcement mats in the central area of the reinforcing mat as well as the material properties and surface finish of the wires of this reinforcing mat are not described.
  • a reinforcing mat of the initially mentioned type in which the two outer longitudinal elements, the so-called edge elements, at each mat edge smaller center distance from one another than the other longitudinal elements.
  • the loop-shaped bent back wire end parts are welded to the outer of the two edge elements.
  • the two edge elements are arranged at a distance which is substantially smaller than the distance of the other longitudinal elements.
  • the distance between the inner longitudinal edge element and the adjacent longitudinal element of the inner region of the reinforcing mat is greater than the uniform mutual distance of the longitudinal elements in the inner region of the reinforcing mat.
  • the two edge elements have smaller cross-sectional areas than the other longitudinal elements in the interior of the reinforcing mat. Reinforcement mats with several edge element pairs per mat edge are not described.
  • the object of the invention is to avoid the disadvantages of the known reinforcing mats and to provide a reinforcing mat of the introductory type, by appropriate choice of the shape and number of Randlijnsdrahtfinde per mat edge, the material properties of the wires of the reinforcing mat and the mesh shape in the central region of the reinforcing mat as far as possible all static reinforcement tasks and allows easy laying of the reinforcing mats.
  • the invention relates to a reinforcing mat for reinforced concrete, consisting of mutually perpendicular crossing and welded together at the intersections longitudinal and transverse wires, wherein the over the edge longitudinal wires projecting transverse wire end parts in the plane of the mat in the form of a loop bent back to the edge longitudinal wires and welded thereto, thereby characterized in that the reinforcing mat has a central region and two edge regions, each having at least one pair of parallel edge longitudinal wires, and that all the wires of the reinforcing mat consist of hot rolled material of high ductility.
  • the high ductility of the wires is determined by a uniform elongation of at least 5% or by tempering the wires from the rolling heat or alternatively by micro-alloying of the material.
  • the longitudinal and lateral longitudinal wires and / or the transverse wires of the reinforcing mat are subjected to stretching in the longitudinal direction as an additional cold deformation prior to welding.
  • all the wires of the reinforcing mat have a ribbed surface.
  • the wires of the reinforcing mat additionally have at least one longitudinal rib running in the wire direction.
  • the reinforcing mat is further characterized in that the edge regions of the reinforcing mat each have a pair of longitudinal edge, consisting of an inner and an outer longitudinal edge wire, the center distance of the longitudinal edge wires is smaller than the axial distance of the longitudinal wires in the central region of the reinforcing mat and the Axial distance of the inner edge wires of the edge longitudinal wire pairs of the adjacent longitudinal wires of the central region is preferably greater than the axial distance of the longitudinal wires in the central region of the reinforcing mat.
  • the edge regions of the reinforcing mat each have two edge longitudinal wire pairs, each consisting of an inner and an outer longitudinal edge wire, wherein the axial distance of the edge longitudinal wires of the inner Randlticiansdrahtcrues and the center distance of the edge longitudinal wires of the outer Randlticiansdrahtcrues each smaller than the axial distance of the longitudinal wires in the central region the reinforcing mat are that the center distance of the inner edge longitudinal wires of the inner edge longitudinal wire pairs of the adjacent longitudinal wires of the central region is preferably greater than the axial spacing of the longitudinal wires in the central region of the reinforcing mat and that the center distance of the inner edge wires of the outer edge longitudinal wire pairs of the adjacent outer peripheral longitudinal wires of the inner edge pair longitudinal preferably greater than the axial distance of the longitudinal wires in the central region of the reinforcing mat.
  • FIG. 1a shows a plan view of a reinforcing mat according to the invention with rectangular meshes in the central region of the reinforcing mat
  • FIG. 1b a side view of the reinforcing mat according to FIG. 1a in the direction of the longitudinal wires
  • FIG. 1c a side view of the reinforcing mat as shown in Figure 1a in the direction of the transverse wires.
  • 2a, 2b, 2c a reinforcement mat according to FIGS. 1a, 1b, 1c, but with square meshes in the central region of the reinforcing mat
  • Figs. 3a, 3b, 3c to Fig. 8a, 8b, 8c further embodiments of reinforcing mats according to the invention.
  • the reinforcing mat shown in Fig. 1a has a central region Z and a respective edge region R to both longitudinal sides of the reinforcing mat.
  • the reinforcing mat has in the central region Z parallel longitudinal wires 1, which are arranged with the same mutual axial distance a, the so-called longitudinal wire pitch, wherein the axial distances a are measured in each case from the wire center to the wire center and 150 mm in this embodiment.
  • the central region Z of the reinforcing mat is bounded by an outer longitudinal wire 1 '.
  • the edge regions R each consist of an inner edge longitudinal wire pair P1 and an outer edge longitudinal wire pair P2.
  • the inner longitudinal edge pairs PI each consist of an inner longitudinal edge wire 2 and a parallel, outer longitudinal edge wire 3, wherein the longitudinal edge wires 2, 3 parallel to the longitudinal wires 1, 1 'and have a mutual distance d, which is substantially smaller than the longitudinal wire pitch a and in the exemplary embodiment, for example, 50 mm, but in the context of the invention may also be in the range between 20 and 50 mm.
  • the inner longitudinal edge wires 2 are arranged by the adjacent outer longitudinal wire 1 'of the central region Z in each case at a center distance b which is greater than the longitudinal wire pitch a of the longitudinal wires 1, 1' in the central region Z and in this embodiment, for example 200 mm.
  • the outer longitudinal edge pairs P2 each consist of an inner longitudinal edge wire 4 and a parallel, outer longitudinal edge wire 5, wherein the longitudinal edge wires 4, 5 parallel to the longitudinal wires 1, 1 'and have a mutual distance e, the essential is smaller than the longitudinal wire pitch a and in the exemplary embodiment, for example, 50 mm, but in the context of the invention may also be in the range between 20 and 50 mm.
  • the inner longitudinal edge wires 4 are arranged from the adjacent outer longitudinal edge wire 3 of the inner longitudinal edge pair P1 in each case at a center distance c which is greater than the longitudinal wire pitch a of the longitudinal wires 1, 1 'in the central region Z and in this embodiment, for example 200 mm.
  • the transverse wires 6 are in the respective grid intersection points 8 with the longitudinal wires 1, 1 'and in the grid intersection points 9, 9'; 10, 11 with the associated longitudinal edge wires 2, 3; 4, 5 welded.
  • the ends of the edge loops 7 are also welded in the points of intersection 11 'with the associated outer peripheral longitudinal wire 5 of the outer longitudinal edge pair P2.
  • the distance f of the outer edge of the edge loop 7 from the center of the outer longitudinal edge wire 5 is preferably 50 mm, but at least four to six times the diameter of the transverse wire 6.
  • the diameter of the edge loop 7 is selected such that when installed in reinforced concrete, the permissible Concrete compressions in the curvature region of the edge loop 7 are not exceeded.
  • edge loops 7 it is within the scope of the invention also possible to bend the edge loops 7 at each mat edge in opposite directions to each other back. It is also possible within the scope of the invention to guide the edge loops 7 as far as the inner longitudinal edge wire 4 of the outer longitudinal edge pair P2 and to additionally weld them to this longitudinal edge wire 4.
  • each reinforcement in the direction of the transverse wires 6 must be composed of several, juxtaposed reinforcement mats to accommodate the different dimensions of the to be reinforced tensile structure.
  • the formation of the edge loops 7 is achieved together with the narrow position of the edge wires 4, 5 of the outer Randlticiansdrahtcrues P2 that in the overlapping joint of two reinforcing mats, the two welds of lying in front of the loop parts of each transverse wire with the two outer edge wires 4, 5 due to their small mutual distance c almost uniformly participate in the power transmission and thus that the load per spot weld is reduced.
  • the edge loops 7 additionally improve the anchoring of overlapping reinforcing mats in the overlap shock and allow less overlap. Since the edge loops 7 make it very clear the position of the reinforcing mat edges in the composite of several reinforcing mats, the actual coverage area is precisely defined and the laying arrangement of the reinforcing mats is easily controllable at any time on the construction site.
  • the edge loops 7 also improve the handling of the reinforcing mats during stacking, loading and laying. When pulling off individual reinforcement mats from the pile and moving the reinforcement mats on the formwork, a skewing of the transverse wire ends is avoided.
  • the reinforcing mats can also be laid so that the inner longitudinal edge wire 4 of the outer longitudinal edge pair P2 of one reinforcing mat comes to lie next to the inner longitudinal edge wire 2 of the inner longitudinal edge pair P1 of the adjacent reinforcing mat.
  • the covered slab width of the structure is lower than in the first described laying form by the reinforcing mats, so that an adaptation to different widths of the supporting structure to be reinforced is possible.
  • the transverse wire pitch g of the transverse wires 6 is greater than the longitudinal wire pitch a of the longitudinal wires 1, 1 'in the central region Z, so that in this embodiment the longitudinal and transverse wires 1, 1'; 6 in the central region Z of the reinforcing mat mesh 12 with rectangular shape limit.
  • the sum of all the center distances a, b, c, d and e and the loop projections e gives the total width of the reinforcement mat, the total width is selectable, but in most applications is 2400 mm.
  • the diameters of the longitudinal edge wires 2, 3, 4, 5 are selected smaller than the diameter of the longitudinal wires 1, 1 'in the central region Z.
  • the diameters of the transverse wires 6 are selected smaller than the diameter or at most equal to the diameter of the longitudinal wires 1, 1 'in the central region Z.
  • the diameters of all wires 2, 3, 4, 5 of the reinforcing mat are selectable and are preferably in the range of 3 to 14 mm.
  • the surface of the wires 1, 1 ', 2, 3, 4, 5, 6 is preferably provided with a ribbing in order to increase the adhesion of the reinforcing mat in the concrete.
  • the ribbing consists of several, but at least two rows of inclined ribs, which extend in the wire longitudinal direction and are distributed uniformly around the circumference of the wire.
  • the ribbing either be incorporated into the surface of the wires as so-called deep ribbing or project beyond the surface of the wires as so-called high ribbing.
  • the shape of the ribbing is selectable and may have any cross-sectional shape.
  • All wires 1, 1 ', 2, 3, 4, 5, 6 of the reinforcing mat according to the invention are made of hot-rolled material of high ductility, by tempering the wires 1, 1', 2, 3, 4, 5, 6 of the hot-rolled material from the Walzhitze arises.
  • the high ductility is defined by an even expansion of at least 5%.
  • the hot rolled material is manufactured in standard integer diameters of 6, 8, 9, 10 and 12 mm.
  • all wires 1, 1 ', 2, 3, 4, 5, 6 of the reinforcing mat according to the invention also consist of hot-rolled material, which is additionally subjected to a cold working in a further step and thereby obtains better mechanical and technological properties.
  • the cold working preferably consists of a recovery of the hot rolled material.
  • the wire is not descaled before stretching, but the brittle scale layer bursts during the stretching process and falls down.
  • the cold deformation may alternatively consist of a work hardening by rolling and / or drawing. In this manufacturing method, the wire is descaled before the cold working, so that the annihilating during welding of the longitudinal and transverse wires scale layer is removed.
  • the preparation of the reinforcing mat according to the invention takes place in multi-point mesh welding systems, which after the electric Resistance method work.
  • the longitudinal wires 1, 1 'and the longitudinal edge wires 2, 3, 4, 5 can be supplied in the context of the invention in the form of prefabricated, straight bars of the mesh welding system or deducted from an endless strand of material.
  • the transverse wires 6 are drawn off from an endless strand of material, which is present depending on the diameter and material properties of the transverse wires 6 in the form of wound coils or annular coils or rings.
  • the transverse wires 6 are then straightened and then fed to the mesh welding machine.
  • the second, in Figs. 2a, 2b, 2c illustrated embodiment of a reinforcing mat differs from the embodiment according to FIGS. 1a, 1b, 1c, characterized in that the center distances g 'of the transverse wires 6 equal to the axial distances a of the longitudinal wires 1, 1' are in the central region Z, so that the longitudinal wires 1, 1 'in the central region Z with the transverse wires 6 square meshes 13 limit.
  • the longitudinal wires 1, 1 'and the longitudinal edge wires 2, 3, 4, 5 project beyond the outer transverse wires 6 of the reinforcing mat around the longitudinal wire projections h', which in this embodiment amount to 75 mm.
  • FIGS. 3a, 3b, 3c another embodiment of a reinforcing mat is shown in plan view and in two side views.
  • the reinforcing mat shown in FIGS. 3a, 3b, 3c differs from the reinforcing mat shown in FIGS. 1a, 1b, 1c in that the center distances a 'in the central region Z are 100 mm.
  • FIGS. 4a, 4b, 4c show a further exemplary embodiment of a reinforcing mat in plan view and in two side views.
  • the illustrated in Figs. 4a, 4b, 4c Rebar mat differs from the exemplary embodiment illustrated in FIGS. 3 a, 3 b, 3 c in that the center distances g 'of the transverse wires 6 are equal to the center distances a of the longitudinal wires 1, 1' in the central region Z, so that the longitudinal wires 1, 1 'in FIG Central area Z with the cross wires 6 square mesh 13 limit.
  • the longitudinal wires 1, 1 'and the longitudinal edge wires 2, 3, 4, 5 project beyond the outer transverse wires 6 of the reinforcing mat around the longitudinal wire projections h', which in this embodiment amount to 75 mm.
  • FIGS. 5a, 5b, 5c show in plan view and in two side views a further exemplary embodiment of a reinforcing mat according to the invention.
  • the reinforcing mat shown in FIGS. 5a, 5b, 5c differs from the embodiment shown in FIGS. 1a, 1b, 1c in that no inner longitudinal edge pair P1, but only the outer longitudinal pair P2 are present on both sides of the reinforcing mat.
  • the central region Z of the reinforcing mat is widened accordingly.
  • an axial spacing c of the longitudinal edge wires 4, 5 of the outer longitudinal edge pair P2 of 200 mm is also selected, since on the one hand an edge saving effect is to be achieved and, on the other hand, no longitudinal wire accumulation but rather uniform distribution of the longitudinal wires in the overlap area should result.
  • the center distances c of the longitudinal edge wires 4, 5 of the outer longitudinal edge pair P2 can also be selected equal to the center distances a of the longitudinal wires 1, 1 'in the central region Z of the reinforcing mat 1.
  • FIGS. 6a, 6b, 6c differs from the exemplary embodiment according to FIGS. 5a, 5b, 5c in that the center distances g 'of the transverse wires 6 are equal to the center distances a of the longitudinal wires 1, 1' in the central area Z are so that the longitudinal wires 1, 1 'in the central region Z with the transverse wires 6 square meshes 13 limit.
  • the longitudinal wires 1, 1 'and the longitudinal edge wires 4, 5 project beyond the outer transverse wires 6 of the reinforcing mat around the longitudinal wire projections h', which in this embodiment amount to 75 mm.
  • FIGS. 7a, 7b, 7c another embodiment of a reinforcing mat is shown in plan view and in two side views.
  • the reinforcement mat shown in FIGS. 7a, 7b, 7c differs from the reinforcement mat shown in FIGS. 5a, 5b, 5c in that the center distances a 'in the central region Z are 100 mm.
  • FIGS. 8a, 8b, 8c show a further exemplary embodiment of a reinforcing mat in plan view and in two side views.
  • the reinforcing mat shown in FIGS. 8a, 8b, 8c differs from the embodiment shown in FIGS. 7a, 7b, 7c in that the center distances g 'of the transverse wires 6 are equal to the center distances a of Longitudinal wires 1, 1 'are in the central region Z, so that the longitudinal wires 1, 1' in the central region Z with the transverse wires 6 square mesh 13 limit.
  • the longitudinal wires 1, 1 'and the longitudinal edge wires 4, 5 project beyond the outer transverse wires 6 of the reinforcing mat around the longitudinal wire projections h', which in this embodiment amount to 75 mm.
  • FIGS. 2a, 2b, 2c to 8a, 8b, 8c also correspond to the material nature and method of manufacture of the wires 1, 1 ', 2, 3, 4, 5, 6 with respect to the wire diameter, the wire surface and the manufacture the reinforcing mats the detailed embodiment described in FIGS. 1a, 1b, 1c. This also applies to the advantages of the edge loops 7 described.
  • the illustrated embodiments can be modified variously, in particular in terms of the design of the reinforcing mat within the scope of the general inventive concept;
  • the technological material properties of the longitudinal and longitudinal side wires 1, 1 ', 2, 3, 4, 5 and the technological material properties of the transverse wires 6 are different and / or produced by different methods.
EP05026428A 2004-12-10 2005-12-03 Treillis d'armature pour béton armé Withdrawn EP1669508A1 (fr)

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AT9022004 2004-12-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2130989A1 (fr) * 2008-06-02 2009-12-09 AVI Alpenländische Veredelungs-Industrie Gesellschaft m.b.H. Treillis d'armature pour béton armé avec au moins une partie de débordement
ES2363324A1 (es) * 2009-11-20 2011-07-29 Bupre, S.L. Pieza aligerada de tapa para arquetas y canalizaciones y tapa formada por las mismas.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB204497A (en) * 1922-09-05 1923-10-04 British Reinforced Concrete Eng Co Ltd Improvements in or relating to wire fabric reinforcements for the concrete foundations of roadways, tramways and the like
GB1058863A (en) * 1964-09-17 1967-02-15 Baustahlgewebe Gmbh Method of producing a ribbed reinforcing bar for concrete
DE1509015A1 (de) * 1964-08-01 1969-07-03 Moell Dipl Ing Friedrich Wilhe Bewehrungsmatte fuer Stahlbeton
US4096680A (en) * 1976-05-07 1978-06-27 Firma Avi Alpenlandische Veredelungs- Industrie Gesellschaft Mbh. Reinforcement grid for steel concrete construction
AT377565B (de) * 1982-02-17 1985-04-10 Alpenlaendische Veredelungsind Bewehrungsmatte fuer stahlbeton
AT411279B (de) * 2000-11-08 2003-11-25 Avi Alpenlaendische Vered Bewehrungsmatte für stahlbeton

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB204497A (en) * 1922-09-05 1923-10-04 British Reinforced Concrete Eng Co Ltd Improvements in or relating to wire fabric reinforcements for the concrete foundations of roadways, tramways and the like
DE1509015A1 (de) * 1964-08-01 1969-07-03 Moell Dipl Ing Friedrich Wilhe Bewehrungsmatte fuer Stahlbeton
GB1058863A (en) * 1964-09-17 1967-02-15 Baustahlgewebe Gmbh Method of producing a ribbed reinforcing bar for concrete
US4096680A (en) * 1976-05-07 1978-06-27 Firma Avi Alpenlandische Veredelungs- Industrie Gesellschaft Mbh. Reinforcement grid for steel concrete construction
AT377565B (de) * 1982-02-17 1985-04-10 Alpenlaendische Veredelungsind Bewehrungsmatte fuer stahlbeton
AT411279B (de) * 2000-11-08 2003-11-25 Avi Alpenlaendische Vered Bewehrungsmatte für stahlbeton

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2130989A1 (fr) * 2008-06-02 2009-12-09 AVI Alpenländische Veredelungs-Industrie Gesellschaft m.b.H. Treillis d'armature pour béton armé avec au moins une partie de débordement
ES2363324A1 (es) * 2009-11-20 2011-07-29 Bupre, S.L. Pieza aligerada de tapa para arquetas y canalizaciones y tapa formada por las mismas.

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