EP2336446A2 - Elément de coffrage articulé pour joints - Google Patents

Elément de coffrage articulé pour joints Download PDF

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Publication number
EP2336446A2
EP2336446A2 EP20100188922 EP10188922A EP2336446A2 EP 2336446 A2 EP2336446 A2 EP 2336446A2 EP 20100188922 EP20100188922 EP 20100188922 EP 10188922 A EP10188922 A EP 10188922A EP 2336446 A2 EP2336446 A2 EP 2336446A2
Authority
EP
European Patent Office
Prior art keywords
formwork
joint
support
elements
stiffening
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Withdrawn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
EP20100188922
Other languages
German (de)
English (en)
Inventor
Horst Frank
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 EP2336446A2 publication Critical patent/EP2336446A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges

Definitions

  • the present invention relates to a joint formwork element for concrete construction.
  • Concrete structures such as floor slabs 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 use of joint formwork elements as permanent formworks leads to easing of work and time savings on the construction site, since no additional work steps for the dismantling of the shuttering incurred and the concreting work for a subsequent concreting section can be started directly.
  • 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 improved anchoring and reinforcement in the concrete and is particularly suitable for Abschalen of connection surfaces, to which a further concreting section is to be connected later.
  • the formwork elements described must be securely fixed to the reinforcement of the respective concrete structure before concreting because the concreting permanently increasing concrete pressure must not lead to a displacement or even falling over of the formwork element. Usually, this fixation is done by a suspension consisting of welded to reinforcement and formwork element metal rods. Overall, the setting up and fixing of large sized Abschalettin are very laborious and therefore costly.
  • Angled formwork elements are for example from the DE 295 05 448 U1 or from the DE 94 00 337 U1 known. In both cases, they are edge formwork elements for concrete slabs that are not suitable as joint formwork elements. That from the DE 295 05 448 U1 known edge formwork element consists of an angled reinforcement mat and a formwork part, which is designed as a separate formwork panel. That from the DE 94 00 337 U1 Known edge formwork element also serves as insulation and consists of an angled reinforcement mat and an insulating body.
  • a disadvantage of angled formwork elements is their bulkiness and unwieldiness, which represent a major problem in particular during storage and transport.
  • the invention as characterized in the claims, the object of a simple and inexpensive storage and transportable joint formwork element to provide, which can be set up quickly and serves as a safe, stable shuttering of individual concreting sections.
  • the joint formwork element comprises at least one planar formwork part, at least one planar support for placement on a substrate and at least one anchoring element.
  • the formwork part consists of a flat, openwork formwork panel.
  • the anchoring element is arranged between formwork part and support and can be connected to these. According to the formwork part and supports are hinged together.
  • the formwork part and the support can be fixed relative to each other after setting up the support on a substrate in an angled position.
  • the joint formwork element is additionally stabilized solely by the weight of the concrete. A falling or slipping of the joint formwork element is prevented.
  • the bracing associated with the formwork part and the support enables safe and stable shuttering of individual concreting sections, since in turn it acts against the increasingly strong concrete pressure on the formwork part and thus prevents pushing away, bending or even folding the formwork part.
  • the articulated connection between formwork part and support brings in comparison with known angled formwork elements significant advantages. Due to the articulated connection storage and transport are in fact significantly simplified in the joint forming element according to the invention, since it is essentially flat, flat parts that can be stacked without problems and space saving, for example on pallets. This results in corresponding cost savings for storage, loading and transport. After delivery to the site formwork part and supports can be brought by means of the articulated connection without technical aids to the desired angled orientation.
  • the articulated connection allows both an aligned and thus flat arrangement as well as a plane-parallel arrangement of formwork part and support.
  • an aligned or a plane-parallel arrangement may be preferred.
  • one of the two hinge elements has a pin serving as a hinge pin and the second hinge element has a form-fitting bore to the bolt.
  • the bolt is passed through the bore and thus forms a hinge axis about which the formwork part can be pivoted relative to the support.
  • the bolt may be equipped with an external thread according to a particularly preferred embodiment of the present invention. In this case, it is possible to secure the bolt by a lock nut against slipping out of the hole.
  • formwork part and support each have two hinge elements.
  • formwork part and support each have two hinge elements.
  • one of the two hinge elements has at least one second bolt and the second Joint element at least a second, positive fit to the second bolt hole.
  • the second and also each further optional bolt has a smaller extent in the direction of the joint axis than the first bolt serving as the joint axis.
  • the formwork part can be pivoted relative to the support about the hinge axis as long as the additionally provided bolt is not in engagement with the corresponding bore of the second hinge element. If the additional bolt is guided through the bore, the formwork part and support are firmly locked relative to each other in a certain position.
  • the flat perforated formwork panel of the formwork part comprises a cross and longitudinal bars comprehensive grid mat and a welded between the transverse and longitudinal bars of the grid mat openwork sheet metal.
  • the perforated metal sheet is an expanded metal or a perforated metal sheet.
  • the cross bars of the metal grid are welded to the longitudinal bars of the metal grid at their crossing points.
  • the transverse and longitudinal bars of the grid mat are welded to the perforated metal sheet.
  • the openings are advantageously chosen on the one hand large enough that a durable and stable connection of the concrete of the two contiguous concreting sections is ensured by passing concrete vapors, but not so large that the concrete of the first concreting section can flow through the openings.
  • the thickness of the transverse and longitudinal bars of the metal grid and the distance of the transverse and longitudinal bars can be made to each other.
  • the flat formwork part and the planar support preferably enclose an angle of 80 ° to 100 °, in particular preferably an angle of approximately 90 ° with one another.
  • formwork part and supports can be moved locally by means of the articulated connection against each other, so that the formwork part is preferably aligned substantially perpendicular to the support resting on the ground. This ensures optimal shuttering of a first concreting section.
  • the conditions for the concreting of a second concreting section are optimally prepared and thus guarantees a perfect connection of the second concreting section.
  • the joint formwork element is designed and set up as a shuttering for underwater concrete construction.
  • the support consists of a flat, preferably from a perforated formwork panel.
  • the joint formwork element according to the invention considerable advantages. Due to the usually lack of lower reinforcement layer in this type of concreting a fixation of formwork parts to the reinforcement is not possible.
  • the joint formwork element according to the invention can be easily placed on a substrate in its desired position.
  • the subsoil of underwater concrete works is usually muddy or muddy, but also stones in the mud or silt can be present.
  • a flat formwork board as a support provides sufficient stability in this type of surface.
  • the sludge or mud passes through the openings, which leads to a kind of "suction" of the support on the substrate and thus to stabilization of the joint formwork element
  • An additional, further stabilization results during the concreting work during casting of the concrete by the overlay and the concomitant weighting of the support with concrete.
  • the joint formwork element is designed and set up as shuttering for the concrete construction for the production of floor slabs.
  • a perforated material preferably consists of a reinforcing mat.
  • a reinforcement mat can be attached to an existing bottom reinforcement layer commonly used to create floor slabs.
  • the joint formwork element according to the invention is thereby stably stabilized so that it can withstand the occurring concreting pressure. During the concreting work, the concrete runs through the support into the lower reinforcement layer of the floor slab.
  • a reinforcing mat as a support material can be saved, which leads to a cost savings and on the other to weight savings.
  • the latter has a particularly advantageous effect on transport and especially on the handling when used on the construction site.
  • the formwork part has at least one vertical stiffening element on its side facing the first concreting section. It proves to be particularly useful when vertical stiffening elements are used for stabilization to counteract a bending or kinking of the formwork parts. Especially during the concreting work by the steadily increasing concreting pressure such stabilization by stiffening elements is of particular advantage.
  • the formwork part preferably has on its side facing the first concreting section at least one vertical stiffening element and on its side facing the second concreting section at least one horizontal one Stiffening element on.
  • the formwork parts generally have a dimension of about 130 cm by 130 cm. Accordingly, the flat, preferably perforated shuttering panels are dimensioned in these orders of magnitude. It proves to be particularly useful for underwater concrete construction when both vertical and horizontal stiffening elements are used for stabilization to counteract bending or kinking of the formwork parts.
  • the number of vertical and horizontal stiffening elements can be adjusted. For reasons of material savings, it may be useful to choose thin formwork panels with larger openings and at the same time to attach a plurality of stiffening elements.
  • the support has on its surface facing away from the surface at least one stiffening element.
  • stiffening elements are factory attached to the formwork parts, preferably by welding.
  • lattice girders are used as stiffening elements, but it is also possible to use simple metal bars or bars, metal strips or steel angles as stiffening elements.
  • Particular preference is given to using pyramidal lattice girders as vertical stiffening elements of the formwork part and as stiffening elements of the support.
  • the vertical stiffening elements of the formwork part and the stiffening elements of the support come to rest on each other.
  • a horizontal stiffening elements of the formwork part preferably single-layer, flat lattice girders are used.
  • the horizontal stiffening elements protrude into the second concreting section at the same time.
  • the stiffening elements "grab" into the concrete and lead to a firm connection of both concreting sections. This ensures an optimal and stable connection of both concreting sections.
  • the guy element is formed by a pull rod or by a pull rope. Particularly useful is the use of a pull rope as guying element. Due to the flexibility of the pull rope, it is possible to complete the joint formwork element at the factory with all connections between the guy element and the formwork part or support and convert it into a compact, plane-parallel shape for storage and transport.
  • the vertical stiffening element of the formwork part and the stiffening element of the support are firmly connected to the guy element.
  • the guy element For the connection of any kind of hooks, eyes or tabs in question.
  • a particularly simple way of attaching the guy element to the stiffening element is to insert a shackle, that is to say a substantially U-shaped profile which surrounds at least part of the fastening element.
  • a metal rod of the stiffening element is guided by the U-shaped profile and in this way the stiffening element firmly connected to the guy element.
  • the stiffening element is screwed to the guy element.
  • a metal or steel strip or angle provided with corresponding bores is preferably fastened, preferably welded, to the ends of the anchoring element and to the stiffening elements. Through the holes screws are guided and countered by means of a threaded nut.
  • the guy element itself can be flattened at the ends and provided with corresponding holes.
  • the anchoring element is provided with a thread, which screwed to fasten the guy element on the stiffening element with the stiffening element attached to the sheet metal or steel strip or angle becomes.
  • 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.
  • the anchoring element can in turn be guided through the corresponding holes of the sheet metal or steel strip or angle, countered by means of a threaded nut and thus be firmly connected to the stiffening element.
  • a threaded nut can be welded in alignment with the bores to the sheet metal or steel strips or angles. In this case, the guy is passed through the holes and bolted to the welded nut.
  • a pull rope is used, which is attached to the edge side, the hinge axis facing away portion of a stiffening element of the support.
  • the pull rope can be looped around a reinforcement located under the support.
  • a perforated sheet metal strip is provided in the edge-side region of a vertical stiffening element of the formwork part which faces away from the joint axis.
  • the pull rope is fastened by means of a loop formed at the end of the pull rope and a screw in a hole of the perforated plate strip.
  • tie rods are used as tie-down elements
  • the joint formwork elements can not be completely pre-assembled at the production site with all connections between tie-down element and formwork part or support, since the joint form elements are then in an angled, unfavorable form for transport. But very easily can be bolted to the construction site, the guy elements, which is associated with a much lower labor and time than a possible welding.
  • tension rods can already be factory-bolted to one side, ie either on the formwork part or on the support. An aligned alignment of formwork part and support for storage and transport is still possible in this case.
  • the unilaterally attached tension rods are merely deposited on the joint formwork element. At the place of use, all tension rods are already in their corresponding position and only one screw connection has to be closed per tension rod, which leads to corresponding time savings.
  • the joint formwork element has at least one marginal connection element for connecting a plurality of joint formwork elements.
  • a plurality of joint formwork elements according to the invention can be connected to one another in alignment, so that the formwork parts are in alignment, aligned in one plane and thus define a formwork level.
  • fasteners for example, brackets, hooks and eyes, joining parts for a snap connection or fittings come into question.
  • marginal fasteners sheet metal or steel strips or angles are used with corresponding holes for a screw.
  • the invention also includes a joint form consisting of at least two of the above-described joint formwork elements, which are firmly connected to each other by the marginal connecting elements, preferably screwed.
  • a joint formwork element consisting of at least two of the above-described joint formwork elements, which are firmly connected to each other by the marginal connecting elements, preferably screwed.
  • several, at least two joint formwork elements according to the invention are connected to one another by the marginal connecting elements in such a way that the formwork parts are aligned, lying in one plane and thus defining a formwork level.
  • a joint formwork for concrete slabs of any size and dimension can be constructed.
  • a screw is here again associated with a much lower labor and time than a possible welding.
  • the joint formwork element according to the invention or the joint formwork provides an easily manageable and cost-effective shuttering available.
  • FIG. 1 shows a perspective view of a joint forming element according to the invention 1 for concrete construction, consisting of a two-dimensional formwork part 2, a flat bearing 3 for placement on a substrate and two guy elements. 4
  • the formwork part 2 has a height h s in a range of 80 cm to 130 cm, in the present example a height h s of about 130 cm and a width b s in a range of 80 cm to 130 cm, in the present example, a width b s from around 130 cm up.
  • the formwork part 2 has a side facing the first concreting section BA1 1 and a side facing the second concreting section BA2, and is aligned at an angle to the support 3.
  • Formwork part 2 and 3 supports a substantially right angle ⁇ .
  • Formwork part 2 and 3 supports are connected to each other via an articulated connection 5.
  • the articulated connection 5 is in the FIGS. 2A and 2B shown in detail and will be described below in connection with these figures.
  • the formwork part 2 comprises a flat, openwork formwork panel 7, which in the specific embodiment consists of a grid mat formed of transverse and longitudinal bars and an expanded sheet metal arranged between the transverse and longitudinal bars and connected thereto.
  • first concreting BA1 1 side facing the formwork part 2 vertical stiffening elements 12a are formed. In the specific embodiment, these are pyramidal lattice girders.
  • second concreting BA2 facing side of the formwork part 2 formed as a single-layer lattice girder horizontal stiffening elements 12b are provided.
  • the support 3 has a height h A in a range of 80 cm to 100 cm, in the present example, a height h A of about 100 cm and a width b A in a range of 80 cm to 130 cm, in the present example, a width b A from about 130 cm up.
  • the support 3 consists of a flat, perforated formwork panel 8, namely a formed of transverse and longitudinal bars grid mat and arranged between the transverse and longitudinal bars and connected to these expanded sheet metal.
  • the joint formwork element 1 is designed and set up as shuttering for underwater concrete construction.
  • the support 3 has pyramidal lattice girders as stiffening elements 12 on the upper side remote from the substrate.
  • the guy elements 4 are tension cables.
  • the traction cables have a length of about 120 cm, are arranged between formwork part 2 and support 3 and fixedly connected to the vertical stiffening elements 12a of the formwork part 2 and the stiffening elements 12 of the support 3.
  • marginal screw-fasteners may be provided for connecting a plurality of joint formwork elements 1.
  • the fasteners are metal strips with corresponding holes that are fixed by welding marginally on the formwork part 2 and 3 on the support.
  • first joint element 5A has a pin 6 serving as a hinge axis with external thread and two further, shorter in the direction of the hinge pin 9 bolts.
  • FIG. 2B the second joint element 5B is shown, the three to the bolts 6, 9 of the first joint element 5A form-fitting holes 10, 11 has.
  • the bolt 6 is guided through the bore 10 and in this way forms a hinge axis about which the formwork part 2 can be pivoted relative to the support 3.
  • the bolt 6 is secured by a lock nut against slipping out of the bore 10.
  • the joint element 5A has two further bolts 9 and the second joint element 5B two further, to the pin 9 positively locking holes 11.
  • the formwork part 2 can be pivoted relative to the support 3 about the hinge axis, as long as the additionally provided bolts 9 are not engaged with the corresponding holes 11 of the second hinge element are located. If the additional bolts 9 are guided through the bores 11, shuttering part 2 and supports 3 are firmly locked relative to each other.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP20100188922 2009-12-16 2010-10-26 Elément de coffrage articulé pour joints Withdrawn EP2336446A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009014872U DE202009014872U1 (de) 2009-12-16 2009-12-16 Fugenschalungselement

Publications (1)

Publication Number Publication Date
EP2336446A2 true EP2336446A2 (fr) 2011-06-22

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ID=43297019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100188922 Withdrawn EP2336446A2 (fr) 2009-12-16 2010-10-26 Elément de coffrage articulé pour joints

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EP (1) EP2336446A2 (fr)
DE (1) DE202009014872U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016217430B4 (de) * 2016-09-13 2022-09-22 Fwr Solutions Gmbh Dehnfugenschalung
DE102020109531B3 (de) 2020-04-06 2021-07-29 Max Frank GmbH & Co. Kommanditgesellschaft Schalungssystem

Citations (4)

* 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
DE9400337U1 (de) 1994-01-11 1994-02-24 Eberle, Bernd, 72661 Grafenberg Deckenrandschalungselement
DE29505448U1 (de) 1995-03-30 1995-07-27 Construmat Ag, Hegnau-Volketswil Randschalungselement
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
US5817247A (en) * 1996-12-27 1998-10-06 Colatruglio; Timothy Wall supporting
DE202006019268U1 (de) * 2006-12-21 2007-05-24 Altrad Baumann Gmbh Stützvorrichtung, insbesondere Abschalhalter
DE202008015883U1 (de) * 2008-12-01 2009-04-02 Fwr Solutions Gmbh Schalung mit Rückverankerungseinrichtung

Patent Citations (4)

* 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
DE9400337U1 (de) 1994-01-11 1994-02-24 Eberle, Bernd, 72661 Grafenberg Deckenrandschalungselement
DE29505448U1 (de) 1995-03-30 1995-07-27 Construmat Ag, Hegnau-Volketswil Randschalungselement
EP1132545A2 (fr) 2000-03-09 2001-09-12 Willibald Fischer Matériel de coffrage

Also Published As

Publication number Publication date
DE202009014872U1 (de) 2011-04-28

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