EP2253779A2 - Système de coffrage - Google Patents

Système de coffrage Download PDF

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Publication number
EP2253779A2
EP2253779A2 EP20100162489 EP10162489A EP2253779A2 EP 2253779 A2 EP2253779 A2 EP 2253779A2 EP 20100162489 EP20100162489 EP 20100162489 EP 10162489 A EP10162489 A EP 10162489A EP 2253779 A2 EP2253779 A2 EP 2253779A2
Authority
EP
European Patent Office
Prior art keywords
formwork
guy
metal
suspension
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Withdrawn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
EP20100162489
Other languages
German (de)
English (en)
Inventor
Helmut Gutzer
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.)
PECA Verbundtechnik GmbH
Original Assignee
PECA Verbundtechnik 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 PECA Verbundtechnik GmbH filed Critical PECA Verbundtechnik GmbH
Publication of EP2253779A2 publication Critical patent/EP2253779A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/365—Stop-end shutterings

Definitions

  • the present invention relates to a formwork system for concrete construction.
  • Concrete structures such as floor / ceiling tiles are often concreted in several sections. Reasons for this are, for example, the mixing of new concrete or a break in work between the casting of the individual sections.
  • the shuttering elements used for this purpose are usually made of steel and have larger dimensions, which leads to a high weight and corresponding difficulties in use on the construction site.
  • a formwork element in which the bars of the formwork carrier forming gridwork are arranged on both surfaces of an intermediate metal plate and welded thereto.
  • the formwork element causes an improved anchoring and reinforcement in the concrete and is particularly suitable for Abschalen connection surfaces to which a further concrete section is to be connected later.
  • the object of the invention is to provide a shuttering, which can be easily and quickly connected to the reinforcement of the concrete structure and yet securely fixed to the reinforcement.
  • the formwork system according to the invention for concrete construction comprises a formwork element and at least one suspension.
  • the formwork element is a planar formwork part aligned in the installed state essentially perpendicular to a reinforcement layer, with a front side facing the first concreting section and one facing the second Concreting section facing back.
  • the suspension comprises a guy element, a fastening device for fastening the guy element to the reinforcement layer and a tensioning device for fastening the guy element to the formwork element.
  • the anchoring element penetrates the planar formwork part and emerges from its rear side substantially perpendicular to the plane of the flat formwork part.
  • the clamping device surrounds the guy element in the rear region of the formwork part and fixes it firmly to the formwork element.
  • the formwork system according to the invention By means of the formwork system according to the invention, the welding previously required for fastening the suspension is completely avoided.
  • the attachment of the fastening device to the reinforcement layer and the fixing of the clamping device are associated with a much lower labor and time than the welding of the suspension to the reinforcement and the formwork element.
  • the formwork system according to the invention provides a good manageable and cost-effective shuttering available.
  • the clamping device can be removed from the rear side of the formwork element and subsequently reused.
  • the still at that time still linear guy element is initially performed at a favorable height by the flat formwork part.
  • the anchoring element is fastened by means of the fastening device to a reinforcement layer.
  • the guy element is bent at its exit point from the sheet-like formwork part so that it encloses approximately an angle of 90 ° with the plane of the formwork part.
  • the clamping device is inserted from the back of the formwork part forth on the anchoring element.
  • the attachment of the guy element takes place at the lower reinforcement layer of the concrete structure.
  • the present invention also includes embodiments in which the attachment to the upper reinforcement layer takes place.
  • the formwork system according to the invention is described below in connection with the construction of a floor / ceiling panel, but that the formwork system can also be used in the context of wall-floor / ceiling joints and wall-wall joints.
  • the guy element is a metal wire or a metal rod.
  • an optimum thickness of the metal wire or metal rod used as guy element can be selected. The higher the expected concrete pressure on the formwork element, the larger the diameter of the metal wire or metal rod must be dimensioned.
  • the planar formwork part has openings.
  • the openings of the sheet-like formwork part are advantageously large enough on the one hand to ensure a durable and stable connection of the concrete of the two contiguous concreting sections, but on the other hand are not so large that the concrete of the first concreting section can flow through the openings.
  • the flat formwork part consists of a metal grid constructed of transverse and longitudinal bars and a panel of expanded metal connected to the bars of the metal grid, the expanded metal bar being arranged between the transverse and longitudinal bars of the metal grid.
  • the cross bars of the metal grid are welded to the longitudinal bars of the metal grid at their crossing points.
  • the clamping device surrounds the guy element in the rear area of the formwork part and fixes it firmly to the formwork element. This fixation is done by a tensile load of the guy element.
  • the clamping device is supported on the back of the formwork element.
  • the expanded metal plate already has perforations, the size of which can be adapted to carry out a guy element in a simple manner by severing individual expanded metal webs.
  • the formwork elements have enough inherent stability and rigidity to not be deformed by the supporting jig.
  • the formwork element comprises at least two transverse bars as additional stiffening elements on the rear side of the flat formwork part.
  • the crossbars increase the stability and rigidity of the formwork element.
  • the clamping device is supported on the additional transverse rods, which is why in this case the force exerted on the formwork element force can be selected larger.
  • the formwork element preferably comprises a lattice girder attached to the rear side of the flat formwork part as a further stiffening element.
  • a lattice girder By a lattice girder, the stability and rigidity of the formwork element is further enhanced.
  • the tensioning device is supported in this case either on the lattice girder or on the additional transverse bars.
  • a fastening device which is particularly easy to attach for fastening the guy element to the reinforcement layer consists of a shackle, that is to say a substantially U-shaped profile which surrounds at least part of the reinforcement.
  • a metal rod of the reinforcement is guided by the U-shaped profile and in this way the reinforcement firmly connected to the guying element.
  • the guy element is provided with a thread, which is screwed to fasten the guy element to the reinforcement layer with the fastening device.
  • the guy element itself can be provided with a thread or, alternatively, a threaded rod can be welded to the guy element. The welding of the threaded rod is already made at the factory, which is why no welding process on the site is required in this embodiment.
  • the anchoring element can be guided through corresponding holes of the fastening device, countered by means of a threaded nut and thus firmly connected to the fastening device.
  • the fastening device can also be provided with a complementary to the external thread of the guying element internal thread and screw in this way guy and fastening device.
  • a threaded nut can be welded in alignment with the holes in the fastening device. In this case, the guy element is guided through the holes of the fastening device and screwed to the threaded nut welded to the fastening device.
  • the formwork system comprises several suspensions.
  • the formwork system comprises several suspensions.
  • Several suspensions may be required both in the direction of the vertical extent of the formwork element as well as in the direction of the horizontal extent of the formwork element.
  • a first guy element preferably strikes the formwork element at a height of about 20 cm. Particularly preferred in addition per 80 cm vertical extension of the sheet-like formwork part a further suspension is provided. In a fitting dimension of the formwork element of about 2 m so three suspensions are required for secure fixation of the formwork element. The installation dimension of the formwork element corresponds to the distance between the lower and upper reinforcement.
  • the anchoring elements penetrate the formwork part at heights of around 20 cm, around 1 m and around 1.80 m.
  • such an arrangement of a plurality of clamping elements tensioned one above the other can also be required to be arranged several times next to each other, depending on the horizontal extent of the concrete structure.
  • the FIG. 1 shows a vertical section through a bottom plate. Shown are the lower reinforcement layer 6, the upper reinforcement layer 16, a formwork element 1 and two suspensions 2.
  • the formwork element 1 comprises the planar formwork part 3 with a front facing the first concreting BA1 and a second concreting BA2 facing back.
  • the sheet-like formwork part 3 consists of a cross-14 and longitudinal bars 15 constructed metal grid (see FIG. 3 ) and an expanded metal sheet 17 connected to the bars of the metal grid.
  • transverse and longitudinal bars for example, bars made of structural steel can be used, as they are also used for reinforcing mats or the like.
  • the sheet 17 of expanded metal is disposed between the transverse 14 and the longitudinal bars 15 of the metal grid.
  • a lattice girder 8 is attached as an additional stiffening element.
  • the formwork system also comprises two suspensions 2, which are identical except for the length of the respective guy elements 4.
  • a fastening device 5 is used to fasten the guy element 4 to the form element 1, a tensioning device 7 is used.
  • two suspensions 2 are required for secure fixation of the formwork element.
  • the installation dimension of the formwork element 1 corresponds to the distance between the lower and upper reinforcement.
  • a first suspension meets about 20 cm above the lower reinforcement layer on the flat formwork part 3.
  • the second suspension is attached about 80 cm above the first suspension to the formwork element 1.
  • Both anchoring elements 4 meet at an angle of about 45 ° on the surface Formwork part 3, penetrate the formwork part 3 and exit at an angle of about 90 ° to the back of the formwork part 3 from this.
  • the fastening device 5 is composed of a U-profile 9, a welded to the guy 4 threaded rod 10 and a threaded nut 11 together.
  • the U-profile 9 surrounds a rod 12 of the lower reinforcement.
  • the two legs of the U-profile 9 have holes through which the threaded rod 10 is guided. With the help of a threaded nut 11 of threaded threaded rod 10 and thus the guy 4 is firmly connected to the U-profile 9 and thus the lower reinforcement 6.
  • FIG. 3 is shown enlarged the range of attachment of the suspension 2 to the formwork element 1.
  • the anchoring element 4 penetrates the planar formwork part 3 and exits from the rear side of the formwork part 3 at an angle of approximately 90 ° to the plane of the flat formwork part 3 therefrom.
  • the turnbuckle used as a clamping device 7 surrounds the guy element 4.
  • the turnbuckle is a formwork clamping device which is unlocked by actuation of the turnbuckle lever 13, then brought to the shuttering element 1 and finally by releasing the turnbuckle lever 13 fixed to the guy element 4 is fixed.
  • two additional transverse bars 18 are mounted for further stiffening of the formwork element.
  • the turnbuckle 7 is supported on the rear side of the formwork part 3 on the additional transverse bars 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP20100162489 2009-05-12 2010-05-11 Système de coffrage Withdrawn EP2253779A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009004804U DE202009004804U1 (de) 2009-05-12 2009-05-12 Schalungssystem

Publications (1)

Publication Number Publication Date
EP2253779A2 true EP2253779A2 (fr) 2010-11-24

Family

ID=42359450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100162489 Withdrawn EP2253779A2 (fr) 2009-05-12 2010-05-11 Système de coffrage

Country Status (2)

Country Link
EP (1) EP2253779A2 (fr)
DE (1) DE202009004804U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021104831A1 (de) 2021-03-01 2022-09-01 Fwr Solutions Gmbh Dehnfugenschalung mit Spannvorrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013220854A1 (de) * 2013-10-15 2015-04-16 Fwr Solutions Gmbh Schalung für den Betonbau
DE102016217430B4 (de) 2016-09-13 2022-09-22 Fwr Solutions Gmbh Dehnfugenschalung
DE102017216383A1 (de) 2017-09-15 2019-03-21 Fwr Solutions Gmbh Verlorene schalung für den betonbau
DE202017007465U1 (de) 2017-09-15 2021-09-28 Fwr Solutions Gmbh Verlorene Schalung für den Betonbau

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507054A1 (fr) 1991-04-05 1992-10-07 Peca-Verbundtechnik Gmbh Elément de coffrage
EP1132545A2 (fr) 2000-03-09 2001-09-12 Willibald Fischer Matériel de coffrage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH646751A5 (de) * 1980-05-01 1984-12-14 Pawe Ag Verwendung von aus streckmetall oder aus blech mit aufgerauhter oberflaeche bestehenden profilelementen bei der betonierung eines bauwerkes.
AU3621595A (en) * 1994-09-27 1996-04-19 Lesa Systems Limited Method and apparatus for forming adjacent floor slabs
ATE531864T1 (de) * 2002-11-21 2011-11-15 Ankaba Ag Abschalungsplatte sowie verfahren zu ihrer herstellung und befestigung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507054A1 (fr) 1991-04-05 1992-10-07 Peca-Verbundtechnik Gmbh Elément de coffrage
EP1132545A2 (fr) 2000-03-09 2001-09-12 Willibald Fischer Matériel de coffrage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021104831A1 (de) 2021-03-01 2022-09-01 Fwr Solutions Gmbh Dehnfugenschalung mit Spannvorrichtung
EP4053351A1 (fr) * 2021-03-01 2022-09-07 FWR Solutions GmbH Coffrage pour joints de dilatation pourvu de dispositif de serrage

Also Published As

Publication number Publication date
DE202009004804U1 (de) 2010-10-14

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