EP0080454B1 - Bewehrungsmatte für Stahlbeton - Google Patents

Bewehrungsmatte für Stahlbeton Download PDF

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Publication number
EP0080454B1
EP0080454B1 EP82890160A EP82890160A EP0080454B1 EP 0080454 B1 EP0080454 B1 EP 0080454B1 EP 82890160 A EP82890160 A EP 82890160A EP 82890160 A EP82890160 A EP 82890160A EP 0080454 B1 EP0080454 B1 EP 0080454B1
Authority
EP
European Patent Office
Prior art keywords
mat
longitudinal
wires
longitudinal wires
edge
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.)
Expired
Application number
EP82890160A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0080454A1 (de
Inventor
Gerhard Dipl.-Ing. Dr. Ritter
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25593316&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0080454(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from AT0500381A external-priority patent/AT377564B/de
Priority claimed from AT60882A external-priority patent/AT377565B/de
Application filed by AVI Alpenlaendische Veredelungs Industrie GmbH filed Critical AVI Alpenlaendische Veredelungs Industrie GmbH
Publication of EP0080454A1 publication Critical patent/EP0080454A1/de
Application granted granted Critical
Publication of EP0080454B1 publication Critical patent/EP0080454B1/de
Expired legal-status Critical Current

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Classifications

    • 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 reinforcement mat for reinforced concrete, consisting of intersecting longitudinal and transverse wires welded to one another at the point of intersection with an improved bond by embossing, ribbing or in some other way.
  • a reinforcement mat of this type known from DE-B No. 2315520, all the longitudinal elements have the same mutual axial spacings and at least some of the longitudinal elements are in the form of wire pairs with welded-on stiffening webs; the transverse wire end pieces can be bent back in the form of loops to the longitudinal edge elements for the purpose of stiffening the mat, the loops also being intended to enable the formation of force-fitting mat joints.
  • the purpose of this known mat design is either to increase the stiffness of the mat with a given steel effort for the cross wires or to decrease the steel effort for the cross wires with a given stiffness.
  • a load-bearing mat joint is to be formed in such a way that two mats are pushed together until their longitudinal edge elements come to lie next to one another and only the loops of each mat overlap the neighboring mat.
  • the fact that the longitudinal edge elements of the mats are formed as single wires and the other longitudinal elements as double wires prevents a line wire accumulation in the mat joint. In this way, i.e. H.
  • a load-bearing mat joint can also be achieved in a known manner by covering the mat edges by three stitches or four welding points.
  • AT-B No. 269434 deals with the task of bringing about simplifications and reductions compared to the previously common storage and list mats with a new reinforcement program.
  • four narrowed (and possibly thinner) longitudinal wires should be consistently the same width on each mat edge, at mutual distances that are the same for all mats, and inside the mat also in the same, but graded from mat to mat Clearances (possibly thicker) longitudinal wires must be arranged.
  • the cross wires are made as possible in the second case only extended so far beyond the longitudinal edge wires that a flawless welding at the wire crossing points is just still possible, while on the other hand a steel accumulation of four longitudinal wires each from two adjacent mats in the area of their overlap is accepted on each edge of the mat.
  • the invention is based on the object in the context of a new mat and laying pro grammes to form a reinforcement mesh of the type specified in the introduction in such a way that an optimal force transmission between the cross wires of adjacent meshes is ensured and reinforcement composed of meshes according to the invention can be adapted practically without material losses within wide limits to different structural dimensions in the cross-wire direction of the meshes.
  • mats according to the invention should be able to be produced while maintaining the width of standard mats on the mesh welding machines used for them.
  • the invention is initially based on the long-known fact that a local increase in the load-bearing capacity of a tensile structure is effective not only in the immediate area in which it is caused, but also affects both sides of this area up to a certain distance (so-called load-bearing plate areas). If, in some areas, more steel cross-sectional area per unit of width is concentrated in a tensile structure than in the other areas of the structure, the areas of greater reinforcement intensity take on part of the load of the areas of lower reinforcement intensity. In practical terms, this means that the reinforcement can be invoiced with a value that corresponds to the average of the reinforcement intensity of the heavily reinforced areas and the reinforcement intensity of the weakly reinforced areas.
  • the invention is based on the second finding that when several welding points are included in the force transmission path of a cross wire, the individual welding points of the relevant cross wire are involved in the force transmission to a greater extent, the greater the mutual distance between the longitudinal wires.
  • the object of the present invention is now achieved on the basis of the findings described by the combination of the features that the transverse wires protrude beyond the longitudinal longitudinal wires with transverse wire parts that are bent back in the mat plane in the direction of the longitudinal longitudinal wires, and that the longitudinal wires are symmetrical to the longitudinal central axis of the mat are arranged partly in larger and partly in smaller mutual distances, at least the major part of the longitudinal wires lying in the interior of the mat being at a greater mutual distance than the longitudinal edge wires, and two longitudinal wires arranged at a small mutual distance being provided on each mat edge.
  • the anchoring of the transverse wires in the concrete is improved in such a way that the formation of load-bearing impacts by overlapping the loops and the length of the loops and thus the cross-wire protrusions can be dimensioned so short that the length of the two longitudinal longitudinal wires of adjacent mats can be such that mesh mats according to the invention can also be produced in standard widths using conventional mesh welding machines.
  • the transfer of lateral force is not significantly impaired if one of the two welding points on the edge of the mat fails due to a manufacturing defect or subsequent damage to a mat.
  • this edge formation of the mat according to the invention minimizes the cross-wire sections lying next to one another in the overlapping area of adjacent mats and thus the losses of cross-wire material.
  • the arrangement of longitudinal wires in the interior of the mat symmetrically to the longitudinal center axis of the mat, partly in larger and partly in smaller mutual distances, also creates markings for the overlapping laying of adjacent mats.
  • the mats can be laid on the construction site quickly and thus efficiently without special aids in such a way that they can be easily adapted to the predetermined structure dimensions in the direction of the mat transverse wires.
  • the chosen form of installation always remains light even afterwards controllable because the transverse wire end parts bent back in the direction of the edge longitudinal wires form clearly recognizable irregularities in the finished mat arrangement, so that the distance along which the edges of adjacent mats overlap always remains easily measurable.
  • the transverse wire end pieces on each mat edge can be bent back at least up to the outermost edge longitudinal wire and welded to it.
  • each transverse wire end part bent back to a longitudinal edge wire is advantageously connected to the longitudinal edge wire by at least one tack weld, in order to ensure that the loop is not bent open during handling of the mat during transport and on the construction site, thereby at least functioning as a clear marking for the overlap widths neighboring mats would lose.
  • the small distances of the edge longitudinal wires should be equal to or less than half of the larger longitudinal wire distances.
  • the small distance of about 50 mm is chosen, because in this case with the presently stationary in use Gitterschweissma: machines a welding of the transverse wire to the two arranged in this spacing longitudinal wires is still possible by two separate electrodes. If one went down to a smaller welding point distance, then both welding points would have to be fed by a common electrode.
  • the invention allows, as will be described in more detail later, mat designs which, in the case of overlapping mat laying, open up the possibility of calculating the steel accumulations in the overlapping areas as being evenly distributed, as well as mat designs which, given a given mat width, allow for a mat production by appropriate choice of the longitudinal wire spacing Easily adjustable and convertible multi-point lattice welding machines with a predetermined, uniform arrangement of the electrodes enable, and finally mat designs, which result in a largely uniform, related steel cross-section due to an edge-saving effect even with overlapping mats of large width and small overlap.
  • FIG. 1 shows longitudinal wires 5 with the inner area of the mat and longitudinal wires 3, 4 in the two edge areas.
  • the longitudinal wires in the interior are arranged at the same mutual distance a.
  • the mat is not completely drawn, rather n-1 longitudinal wires are omitted in the inner area, which was indicated by the distance " n - a" in the area of the symmetry axis of the mat.
  • the two longitudinal edge wires 3, 4 are arranged at a mutual spacing b which is substantially smaller than the mutual spacing a of the other longitudinal wires and is preferably approximately between 20 and 50 mm.
  • the transverse wires 1 are also arranged at the same mutual distance c, which, however, is generally greater than the distance a between the inner longitudinal wires.
  • the end parts 2 of the cross wires 1 are bent back at each mat edge symmetrically to the mat longitudinal axis X-X to form loops and are welded to the outermost edge longitudinal wire 3 at 11.
  • the loops can, however, also extend as far as the second longitudinal longitudinal wire 4 and can only be welded to this or to both longitudinal longitudinal wires 3, 4.
  • the mats can be turned alternately by 180 ° be stacked to save space, because then, as indicated in FIG. 1 with dashed lines, each cross wire 1 'of the turned mat in one plane next to a cross wire 1 of the non-turned Mat comes to rest and the loops 2 'of the cross wire 1' of the turned mat find space between a cross wire 1 and the loops 2 of the adjacent cross wire 1 of the non-turned mat.
  • the end parts 2 of the cross wires 1 can also be bent back in the form of round hooks (left mat edge) or L-hooks (right mat edge) in the direction of the longitudinal edge wires 3 and not welded to them.
  • FIG. 4 A special form of a mat according to the invention is shown in FIG. 4.
  • This mat in which the transverse wire end parts 2 are led back, for example, to the longitudinal edge wires 3 and can be connected to them by a tack weld at 11, also has two arranged on both sides of the longitudinal central axis XX , a separation point creating longitudinal wires 7, 8 still two groups of two longitudinal wires 12, 13 and 14, 15 arranged at a small distance.
  • the longitudinal wires 12, 13 lie approximately in a quarter of the mat width, the longitudinal wires 14, 15 approximately in a third of the mat width.
  • mats of this type can be adapted by suitable selection of the laying form in small increments within very wide limits to different structural dimensions.
  • the two mats are laid in such a way that the longitudinal wires 4a, 4b of the edge shares of longitudinal wires 3a, 4a and 3b, 4b, which are arranged at a small mutual spacing, touch one another.
  • the mats cover the largest possible board width.
  • the mutually facing edges of both mats remain clearly recognizable by the loop wire end portions 2a, 2b which are bent over in a loop.
  • the longitudinal wires 4a, 4b lie next to longitudinal wires 13b, 13a.
  • the two mats now cover one another by about a quarter of their width, so that the area reinforced by the mats has become narrower than in the case of FIG. 5.
  • a larger steel cross-sectional area compared to the case according to FIG. 5 can be taken into account, so that practically no material losses occur.
  • FIG. 7 A further form of laying is shown in FIG. 7, according to which the longitudinal wires 4a, 4b now come to lie next to the longitudinal wires 15b, 15a.
  • the mats overlap each other by 1 f 3 of their width and therefore cover an even narrower section of the structure.
  • the loop-shaped transverse wire end parts 2a, 2b can also be clearly seen here, with the aid of which the boundaries of the individual mats remain recognizable even in the installed mat assembly.
  • FIGS. 5 to 7 the laying forms of FIGS. 5 to 7 are repeated, but the left mat is severed along its axis of symmetry X-X. According to FIG. 10, the mats laid in the manner shown there thus cover a structure width that is only slightly larger than that which can be covered by a single mat.
  • the mat shown in FIG. 11 is largely similar to that shown in FIG. 3. Since it is not possible to build up any mat widths with as small and large mutual wire spacing as possible in such a way that the large wire spacings are always the same, integer multiples of the small wire spacings, but the standard mat widths used in the individual countries are selected on the basis of very different aspects. It may be expedient to separate the two coulters 3, 4 and 9, 10 arranged on each mat edge by longitudinal wires arranged at a small mutual distance b, as shown in FIG. 11, by a distance e which is greater than the mutual Distance a of the longitudinal wires 5 in the interior of the mat.
  • the loop-shaped transverse wire end pieces 2 protrude on both sides by 50 mm over the longitudinal edge wire 3
  • the small mutual distances b between the longitudinal wires 3 and 4 or 9 and 10 are also 50 mm and the mutual distances a between the inner longitudinal wires 5 are each 150 mm
  • the longitudinal wires 4 and 10 are then at a mutual distance of 150 mm and the mat corresponds to that shown in FIG. 3.
  • the mats are to be 2050 mm wide, as is customary, for example, in Switzerland, then it is no longer possible to build up the mats with small distances b of consistently 50 mm and large distances a of consistently 150 mm.
  • a distance b of 50 mm can be provided between the longitudinal wires 3, 4 and 9, 10 and an edge projection of 50 mm can also be provided for the loops.
  • the wish to produce all mats with the permitted maximum width for reasons of economy of the mat transport can be taken into account in that the longitudinal wires 5 in the interior of the mats according to FIG. 12 (apart from those possibly according to FIG. 4 to facilitate division of the mats) Mat provided longitudinal wires 7, 8 in the middle of the mats) at the same mutual distance a and two longitudinal wires 4, 5a are arranged at a mutual distance e near each mat edge, which is greater than the mutual distance b of the longitudinal longitudinal wires 3, 4 and deviates from the mutual distance a of the longitudinal wires 5 in the interior of the mat.
  • This measure and a further embodiment of the invention, explained with reference to FIGS. 13 and 14, can also achieve a better uniformity of the steel cross-section in the association of overlapping laid mats.
  • the local steel accumulations caused by the edge overlaps may usually only be billed as evenly distributed according to national regulations if the edge areas of adjacent mats overlap so far that the distance between the left boundary of the overlap area and the right edge a mat from the right boundary of the overlap area on the left edge of the same mat is equal to or less than a prescribed limit. In all those cases in which the edges of adjacent mats overlap less, the excess steel would be lost in the overlap area.
  • the distance e of the wire 4 from the wire 10 and possibly also the distance of the wire 9 from the wire 5 adjacent to it Mat area are enlarged.
  • these measures can reduce the steel cross-sectional area at the edge of a mat to such an extent that If two adjacent mats overlap in such a way that only the wires 3, 4 of their edge wire coulters overlap, there is an at least approximately uniform distribution of the steel cross-section over the entire reinforced area, which is equal to the steel cross-section in the interior of the mat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wire Processing (AREA)
  • Carpets (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Laminated Bodies (AREA)
EP82890160A 1981-11-20 1982-11-03 Bewehrungsmatte für Stahlbeton Expired EP0080454B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT5003/81 1981-11-20
AT0500381A AT377564B (de) 1981-11-20 1981-11-20 Bewehrungsmatte fuer stahlbeton
AT60882A AT377565B (de) 1982-02-17 1982-02-17 Bewehrungsmatte fuer stahlbeton
AT608/82 1982-02-17

Publications (2)

Publication Number Publication Date
EP0080454A1 EP0080454A1 (de) 1983-06-01
EP0080454B1 true EP0080454B1 (de) 1985-08-14

Family

ID=25593316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82890160A Expired EP0080454B1 (de) 1981-11-20 1982-11-03 Bewehrungsmatte für Stahlbeton

Country Status (14)

Country Link
US (1) US4539787A (el)
EP (1) EP0080454B1 (el)
AU (1) AU552907B2 (el)
CA (1) CA1181255A (el)
DE (1) DE3265453D1 (el)
ES (1) ES277115Y (el)
FI (1) FI72571C (el)
GR (1) GR77737B (el)
HU (1) HU186996B (el)
MX (1) MX158436A (el)
NO (1) NO157832C (el)
PT (1) PT75785B (el)
SG (1) SG69985G (el)
YU (1) YU43141B (el)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU649985B2 (en) * 1989-12-22 1994-06-09 Aquila Steel Company Limited A prefabricated reinforcement system
AT405663B (de) * 1991-03-22 1999-10-25 Wendl Dipl Ing Erwin Verfahren zur herstellung eines streifenförmigen gitterelements
US5487251A (en) * 1994-05-06 1996-01-30 Independent Concrete Pipe Apparatus and method for reinforcing cast structures
AT411279B (de) * 2000-11-08 2003-11-25 Avi Alpenlaendische Vered Bewehrungsmatte für stahlbeton
US6820387B2 (en) * 2001-08-13 2004-11-23 Abraham Sacks Self-stiffened welded wire lath assembly
US20050055953A1 (en) * 2001-08-13 2005-03-17 Abraham Sacks Self-stiffened welded wire lath assembly
FI20055546A (fi) * 2005-10-10 2007-04-11 Tammet Oy Lujiteverkko
US20110131905A1 (en) * 2009-12-07 2011-06-09 Paul Aumuller Cementitious deck or roof panels and modular building construction
US8720142B2 (en) * 2012-08-23 2014-05-13 Sacks Industrial Corporation Stabilized lath and method of manufacture
US9708816B2 (en) 2014-05-30 2017-07-18 Sacks Industrial Corporation Stucco lath and method of manufacture
US9752323B2 (en) 2015-07-29 2017-09-05 Sacks Industrial Corporation Light-weight metal stud and method of manufacture
US9797142B1 (en) 2016-09-09 2017-10-24 Sacks Industrial Corporation Lath device, assembly and method
JP7055465B2 (ja) 2017-08-14 2022-04-18 ストラクタ ワイヤー ユーエルシー 可変長金属スタッド
US11351593B2 (en) 2018-09-14 2022-06-07 Structa Wire Ulc Expanded metal formed using rotary blades and rotary blades to form such

Family Cites Families (13)

* 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
FR646020A (fr) * 1927-12-21 1928-11-06 Tendeur freineur de ruban ou fils métalliques utilisés pour cercler des tuyaux, ballots, caisses ou autres objets
FR686206A (fr) * 1929-12-06 1930-07-23 Nouveau procédé de construction de parois en ciment rigoureusement étanches aux liquides et aux gaz
NL112135C (el) * 1957-09-05
BE622037A (el) * 1961-09-04
US3302360A (en) * 1963-01-09 1967-02-07 Bjerking Sven-Erik Method of reinforcing concrete floors and the like, and a reinforcing element therefor
CH421453A (de) * 1963-04-03 1966-09-30 Baustahlgewebe Gmbh Aus Baustahlmatten bestehende Bewehrung für Bauteile aus Beton
FR1369366A (fr) * 1963-04-10 1964-08-14 A V I Alpenlandische Veredelun Treillis soudé en acier
DE1484116C3 (de) * 1963-07-08 1975-12-04 Bau-Stahlgewebe Gmbh, 4000 Duesseldorf Bewehrungsmattenreihe
DE1812865C3 (de) * 1968-12-05 1975-12-04 Schyndel, Agnes Van, 4041 Stuerzelberg Bewehrung fur flächige Betonbauteile
DE1484252A1 (de) * 1964-11-30 1969-02-13 Hufnagl Walter Bewehrungsmatte
DE2315520B1 (de) * 1973-03-28 1974-03-14 Rehm, Galtus,*Prof. Dr.-Ing., 8000 München Betonstahlmatte mit laengsstaeben bzw. -draehten hoher streckgrenze und guter verbundeigenschaften
DE2350866C3 (de) * 1973-10-10 1979-12-13 Rehm, Gallus, Prof. Dr.-Ing., 8000 Muenchen Betonstahlmatte

Also Published As

Publication number Publication date
FI72571C (fi) 1987-06-08
ES277115Y (es) 1985-07-16
NO157832B (no) 1988-02-15
MX158436A (es) 1989-01-31
NO823772L (no) 1983-05-24
HU186996B (en) 1985-10-28
ES277115U (es) 1985-01-01
PT75785A (de) 1982-12-01
DE3265453D1 (en) 1985-09-19
CA1181255A (en) 1985-01-22
YU43141B (en) 1989-04-30
FI72571B (fi) 1987-02-27
YU259282A (en) 1984-10-31
PT75785B (de) 1985-01-25
GR77737B (el) 1984-09-25
NO157832C (no) 1988-05-25
FI823861L (fi) 1983-05-21
FI823861A0 (fi) 1982-11-10
EP0080454A1 (de) 1983-06-01
SG69985G (en) 1987-10-23
AU9065182A (en) 1983-05-26
AU552907B2 (en) 1986-06-26
US4539787A (en) 1985-09-10

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