EP0072776A1 - Entretoise pour fixer une armature supérieure - Google Patents

Entretoise pour fixer une armature supérieure Download PDF

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Publication number
EP0072776A1
EP0072776A1 EP82810333A EP82810333A EP0072776A1 EP 0072776 A1 EP0072776 A1 EP 0072776A1 EP 82810333 A EP82810333 A EP 82810333A EP 82810333 A EP82810333 A EP 82810333A EP 0072776 A1 EP0072776 A1 EP 0072776A1
Authority
EP
European Patent Office
Prior art keywords
spacer
bars
longitudinal
reinforcement
spacer according
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.)
Granted
Application number
EP82810333A
Other languages
German (de)
English (en)
Other versions
EP0072776B1 (fr
Inventor
Horst Brehmer
Vladimir Vido
Hans Iseli
Wilhelm Michel
Anton Spring
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.)
Von Roll AG
Bossard and Staerkle AG
Original Assignee
Von Roll AG
Bossard and Staerkle AG
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 Von Roll AG, Bossard and Staerkle AG filed Critical Von Roll AG
Priority to AT82810333T priority Critical patent/ATE14033T1/de
Publication of EP0072776A1 publication Critical patent/EP0072776A1/fr
Application granted granted Critical
Publication of EP0072776B1 publication Critical patent/EP0072776B1/fr
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
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/205—Ladder or strip spacers
    • 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
    • E04C5/18—Spacers of metal or substantially of metal

Definitions

  • the present invention relates to an ab. stand holder according to the preamble of independent patent claim 1, and a use according to subclaim 9.
  • Surface reinforcements for reinforced concrete consist of two sets of reinforcing bars, which usually cross each other at right angles. In tensile structures, such reinforcements are laid both near the bottom and near the top in order to create optimal conditions for both the pressure area and the tension area.
  • reinforcement meshes are used more and more. These are factory-made reinforcements with orthogonal groups of bars welded to one another. If individual supports are used for spacing with such mats, about three supports per square meter of mat surface must be provided per mat with typical dimensions, namely 6 m long and 2.40 m wide, with 100 mm longitudinal bar spacing and 300 mm transverse bar spacing, i.e. approximately forty spacers per mat.
  • spacer baskets are again not manufactured in the factory, but on the building site and are particularly advantageous for reinforcements with individual bars because a reinforcement bar can be used directly as a support.
  • a reinforcing iron that can be used for the spacer has been described in CH-A 313.501. Accordingly, an iron wire is wound helically and the snakes thus formed are in pressed the desired shape having straight parts. When laying, the loops are pulled apart and each loop is connected to at least one rod.
  • This type of spacer basket also has to be manufactured on site and requires a lot of steel that is not required.
  • the new spacer should be nestable without loss of space and should be suitable both for laying on the lower formwork and for laying on the lower reinforcement mat.
  • the meandering loops are advantageously formed uniformly and each consist of three straight lines, which are arranged at angles of at least approximately 102 ° to one another. Furthermore, it has also proven to be advantageous if the meander half-loops are of different sizes, the shorter meander half-loop should be larger than the grid of the reinforcement plate so that they cannot fall onto the mesh. If, in particular, the cross bars, which are elongated on the one hand beyond the longitudinal bar, ver with feet at the free ends can be seen and the opposite ends are extended so far that they act as stops against bars of a reinforcement center, the proposed spacer can be used for both types of installation, namely on the formwork or on the lower reinforcement mat according to the use according to the independent claim 9 by simple rotation standing in the same tensile structure.
  • the spacer 10 consists of longitudinal bars 11, 12 bent in a meandering shape, which are held at a distance from one another by means of cross bars 13.
  • the cross bars are rigid by welding or gluing connected to the longitudinal bars 11, 12 and protrude the same on both sides by a certain length, as will be described further below.
  • the meandering loops are the same among themselves and consist of three straight sections that are arranged at an obtuse angle.
  • the meandering half-loops that arise when the meandering loops are halved in a perpendicular plane E in the longitudinal direction of the spacer have different widths.
  • the cross bars 13 determine the distance D between the two longitudinal bars 11, 12. If this distance D within the variable thickness of the lower mat 22 is approximately the same as the height F of the amplitude, the spacer can be rotated by 90 ° and always determines the same distance between lower and upper reinforcement.
  • the cross bars 13 protrude at one end 14 by the length of the feet 15 and twice the bar thickness of the reinforcement over the longitudinal bar 12 and on the other hand, the ends 16 of the cross bars 13 are extended so far that they serve as a stop, so that they are at hold the bars of the reinforcement mesh and the upper reinforcement mesh practically immovably with little play.
  • the angle between the straight sections of the meandering loops must be determined in such a way that the vertical side lengths F of the meandering loops are not opened by a load.
  • the weight of the upper reinforcement mat i.e. 15 kg / m 2 and the weight of a man, i.e. 80 kg, must be taken as the load. It has been shown that this condition is met at an angle of 102 °.
  • the reinforcement mat 22 consisting of orthogonally welded bars is supported on the formwork 20 by means of spacers 21 so that the reinforcement is at a distance from the formwork.
  • the spacer 10 according to FIG. 1 also stands on the formwork 20 with the feet 15 made of non-rusting material. This shows that the free length of the ends 14 of the cross bars 13 must be as long as the height of the spacer 21 and twice the thickness of the bars of the reinforcement mat 22.
  • the upper reinforcement mat 23 can only be displaced slightly .
  • the lower reinforcement mat 22 is also supported on spacers 21 which rest on the formwork 20.
  • the spacer 10 according to FIG. 1 lies on this reinforcement mat 22 with a straight section of a meander half-loop.
  • the upper reinforcement mat 23 lies on the other straight section of the meanders half loops on. It can also be seen from this arrangement that the shorter meander half-loop must be longer than the distance between two adjacent bars of the reinforcement mat 22, so that the spacer 10 lies evenly on the bars of the lower reinforcement mat 22.
  • the spacer can be rotated by 90 ° in an arrangement according to FIG. 2 for heating pipes, pipes for electrical lines or water installation pipes, so that it is shown on the lower reinforcement mat according to FIG. 3 22 rests. This means that complicated and expensive loops do not have to be made with the spacers for such installation work.
  • spacers can be nested and block as little space as possible during storage and transport.
  • two different types of spacers do not have to be kept in stock, rather a series of types is sufficient for all normal structural heights of tensile structures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Body Structure For Vehicles (AREA)
  • Tents Or Canopies (AREA)
EP82810333A 1981-08-14 1982-08-09 Entretoise pour fixer une armature supérieure Expired EP0072776B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82810333T ATE14033T1 (de) 1981-08-14 1982-08-09 Abstandhalter zur fixierung einer oberen bewehrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5281/81 1981-08-14
CH528181 1981-08-14

Publications (2)

Publication Number Publication Date
EP0072776A1 true EP0072776A1 (fr) 1983-02-23
EP0072776B1 EP0072776B1 (fr) 1985-06-26

Family

ID=4290962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810333A Expired EP0072776B1 (fr) 1981-08-14 1982-08-09 Entretoise pour fixer une armature supérieure

Country Status (3)

Country Link
EP (1) EP0072776B1 (fr)
AT (1) ATE14033T1 (fr)
DE (1) DE3264424D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004105A1 (fr) * 1985-01-02 1986-07-17 Per Hofman Organe de positionnement
DE4018632A1 (de) * 1989-08-04 1991-02-14 Polytherm Vertriebsgesellschaf Bewehrungskorb fuer betonboeden oder betondecken
DE10213456A1 (de) * 2002-03-26 2003-10-16 Exte Extrudertechnik Gmbh Unterstützungsteil zur Lagesicherung eines Bewehrungselements
DE102014117103A1 (de) * 2014-11-21 2016-05-25 Transportbeton Sudbrack GmbH Abstandhaltersystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH486617A (de) * 1968-12-13 1970-02-28 Bachmann Ag F & L Distanzhalter für Beton-Armierungen, insbesondere Armierungsnetze
DE2214532A1 (de) * 1972-03-24 1973-10-04 Uth Geb Schneider Dorothea Abstandhalter fuer bewehrungsmittel
DE2634120A1 (de) * 1976-07-29 1978-02-02 Geb Schneider Dorothea Uth Sichtbeton-abstandhalter als stuetzbewehrung
DE2805971A1 (de) * 1978-02-13 1979-08-16 Geb Schneider Dorothea Uth Abstandhalter fuer den stahlbetonbau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH486617A (de) * 1968-12-13 1970-02-28 Bachmann Ag F & L Distanzhalter für Beton-Armierungen, insbesondere Armierungsnetze
DE2214532A1 (de) * 1972-03-24 1973-10-04 Uth Geb Schneider Dorothea Abstandhalter fuer bewehrungsmittel
DE2634120A1 (de) * 1976-07-29 1978-02-02 Geb Schneider Dorothea Uth Sichtbeton-abstandhalter als stuetzbewehrung
DE2805971A1 (de) * 1978-02-13 1979-08-16 Geb Schneider Dorothea Uth Abstandhalter fuer den stahlbetonbau

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004105A1 (fr) * 1985-01-02 1986-07-17 Per Hofman Organe de positionnement
DE4018632A1 (de) * 1989-08-04 1991-02-14 Polytherm Vertriebsgesellschaf Bewehrungskorb fuer betonboeden oder betondecken
DE10213456A1 (de) * 2002-03-26 2003-10-16 Exte Extrudertechnik Gmbh Unterstützungsteil zur Lagesicherung eines Bewehrungselements
DE102014117103A1 (de) * 2014-11-21 2016-05-25 Transportbeton Sudbrack GmbH Abstandhaltersystem

Also Published As

Publication number Publication date
DE3264424D1 (en) 1985-08-01
ATE14033T1 (de) 1985-07-15
EP0072776B1 (fr) 1985-06-26

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