EP1606475B1 - Support de coffrage - Google Patents

Support de coffrage Download PDF

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Publication number
EP1606475B1
EP1606475B1 EP04705090A EP04705090A EP1606475B1 EP 1606475 B1 EP1606475 B1 EP 1606475B1 EP 04705090 A EP04705090 A EP 04705090A EP 04705090 A EP04705090 A EP 04705090A EP 1606475 B1 EP1606475 B1 EP 1606475B1
Authority
EP
European Patent Office
Prior art keywords
frame
recess
formwork
belt
filling material
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 - Lifetime
Application number
EP04705090A
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German (de)
English (en)
Other versions
EP1606475A1 (fr
Inventor
Johann Peneder
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.)
Doka Industrie GmbH
Original Assignee
Doka 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
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Application filed by Doka Industrie GmbH filed Critical Doka Industrie GmbH
Priority to SI200430250T priority Critical patent/SI1606475T1/sl
Publication of EP1606475A1 publication Critical patent/EP1606475A1/fr
Application granted granted Critical
Publication of EP1606475B1 publication Critical patent/EP1606475B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/18—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with metal or other reinforcements or tensioning members
    • E04C3/185—Synthetic reinforcements
    • 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
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms

Definitions

  • the present invention relates to a formwork support with a top flange and a bottom flange and a web connecting them, which consist essentially of wood, and a method for its preparation.
  • Shuttering of the type mentioned are widely used in construction.
  • the formwork beams are in construction site u. a. exposed to pronounced mechanical loads, in particular shock and impact stresses, such as those caused by a fall of the carrier of a scaffold or the like. There is the risk that the formwork beams are damaged in such a way that they no longer have sufficient dimensional stability or even carrying capacity.
  • the AT 403 305 B discloses a formwork support with a top flange and a bottom flange and at least one connecting web, wherein the end face of the top flange and the bottom flange a frontal protection is provided, which consists of a castable or sprayable plastic, directly by casting or injection molding is integrally formed on the upper belt or lower belt.
  • guards have been found to be quite capable of protecting the formwork beam from shock loads acting on the free beam end (i.e., in the beam longitudinal direction).
  • the most frequent impact stresses occur essentially transversely or obliquely to the longitudinal axis of the carrier, in particular when the carrier falls off a scaffold or the like.
  • a stress transversely or obliquely to the longitudinal direction of the impact is usually at an outer edge of the belt. Due to the usually I-shaped carrier cross-section in the belt end, particularly critical stresses occur transversely to the fiber direction in the form of a massive deformation and / or a splitting of the straps.
  • the present invention is based on the idea to protect the formwork support not only by means of outer baffle elements, but specifically designed the inner structure such that the deformation capability and hereby also the carrying capacity of the carrier are considerably increased.
  • a formwork support according to the invention with the features of claim 1 is provided.
  • the carrier still has a simple construction, since a known, generic carrier can be easily modified in the sense of the invention.
  • the at least one recess in the web is located adjacent to the upper flange and / or the lower flange. In this way, the critical transition region between web and strap can be particularly be effectively secured, so that in particular a splitting of the belt due to the initiated by the web pressure force can be effectively prevented.
  • the at least one recess in the upper flange and / or in the lower flange is located adjacent to the web.
  • the bridge is also relieved at the same time, as this is claimed in total uniformly and without voltage spikes, which increases its load capacity.
  • a particularly advantageous Tragyerhalten also results when the two aforementioned objectives are combined in such a way that the at least one recess extends from the web in the upper flange and / or the lower flange.
  • stress peaks in the transition region between web and straps can be completely eliminated, which significantly relieves both the straps and the web, so that overall the load capacity is significantly increased against jerky stresses.
  • a particularly effective damping behavior is achieved according to a development of the present invention in that the filling material substantially fills the at least one recess.
  • the recesses according to the invention can also be very advantageously combined with a forehead protector which at least partially covers an end face of the formwork support located in the end region.
  • a forehead protector which at least partially covers an end face of the formwork support located in the end region.
  • the end protection at least partially surrounds the end region of the formwork support, in order in this way also to carry the load Contribute the wearer in the transverse or oblique direction.
  • the end protection is formed integrally with the filling material of at least one recess.
  • the filling material and / or the forehead protection is formed by a plastic material which is preferably sprayed or poured.
  • a plastic material allows on the one hand advantageous damping properties and on the other hand a simple, fast and cost-effective production process of the formwork support according to the invention.
  • the plastic material is PUR, in particular polyurethane-based polyether-based and polyester-based resin. These materials can be processed in high-pressure or low-pressure processes and are therefore also ideal for pouring in at comparatively low pressures. Furthermore, they have also proved to be advantageous due to the excellent damping properties. Furthermore, the PUR can be advantageously filled with additives such as glass fiber, talc, etc.
  • TPE thermoplastic elastomers
  • TPE-S based on styrene-ethylene-butadiene-styrene
  • TPE-V based on EDM / polypropylene
  • TPE-U based on polyurethane
  • the filling material and / or the forehead protection can also be applied individually or integrally as a semi-finished part (s), for example by means of adhesive or the like.
  • the present invention provides that the forehead protection and / or the filling material has at least one reinforcing element, which is preferably made of steel, aluminum or fiber-reinforced plastic.
  • the formwork support according to the invention additional strength can be imparted without affecting the advantageous deformation properties, so that the load capacity of the wearer can be further increased in shock-like stresses.
  • the reinforcing elements are formed by rings which engage around the upper flange and / or the lower flange in particular. In this way, the straps are reliably secured against splitting in transverse or oblique stress.
  • the present invention provides a method of manufacturing a formwork beam according to claim 13.
  • the inventive method allows an industrially feasible and thus economical production of a novel formwork support, which has a significantly improved load capacity at impact load, in particular in the transverse direction and oblique direction, respectively.
  • casting the filler over injection molding has the advantage that lower pressures are used. As a result, the seal between a casting or injection mold and the outer contour of the support end is simplified.
  • the fixed connection of the web to the upper and lower belt takes place before the introduction of the at least one recess. This means that the preparation of the carrier itself from the introduction of the Recesses can be decoupled, so that any carrier can be subsequently provided with the required or advantageous for the individual application recesses.
  • the at least one recess is sawn or milled from one end face of the web and / or the at least one belt. Thanks to this measure, the at least one recess can be made in a particularly simple manner, and in particular can also be easily introduced to already finished carriers.
  • the method provides that a forehead protector is applied which at least partially covers an end face of the form carrier which is located in the end region, wherein it is particularly preferred for the filling material and / or the forehead protector, in particular integrally, to be applied by spraying or spraying Pouring on a plastic material will be applied.
  • a forehead protector is applied which at least partially covers an end face of the form carrier which is located in the end region, wherein it is particularly preferred for the filling material and / or the forehead protector, in particular integrally, to be applied by spraying or spraying Pouring on a plastic material will be applied.
  • filler material and / or the forehead protection individually or integrally as a semi-finished part (s), for example by means of adhesive or the like.
  • FIGs 1 and 2 show schematically a first embodiment of a formwork support 1 according to the invention.
  • the formwork support 1 comprises a top flange 2, a bottom flange 4 and a connecting web 6, all of which consist essentially of wood.
  • the web 6 may be a solid web or, for example, a truss structure or the like.
  • the straps 2, 4 each have a recess 8 in an end region 1 'of the carrier 1 which extends from the end face 1 "of the form carrier 1 into the straps 2, 4.
  • the recesses 8 are in the present embodiment arranged such that they are each adjacent to the web 6, that is adjacent thereto, but it is also possible according to the invention that the recesses 8 extend into the web 6 or are provided only in the web 6, in which case an arrangement of the recesses adjacent to the straps 2, 4 is preferred.
  • the recesses 8 each have a filling material 10, which has shock-absorbing properties and in the present embodiment, the recesses 8 substantially fills. Although a large filling of the recesses 8 is preferred, embodiments with cavities or recesses in the filler 10 are possible. In addition, it is According to the invention, the filling material 10 has at least one width of the overlap (Ü) in the web transverse direction between the web 6 and the grooves 2,4.
  • the formwork support 1 is provided with a forehead protection 12, which as best seen in FIG. 2 b) is formed integrally with the filling material 10.
  • the frontal protection 12 covers an end face 1 "located in the end region 1 'of the formwork support 1, at least in sections.
  • the frontal protection 12 may also completely cover the end face 1 "of the formwork support 1.
  • the forehead protection 12 in the present embodiment also surrounds the side surfaces of the upper flange 2 and the lower flange 4.
  • the filling material 10 and the end protection 12 are each formed of a shock-absorbing material, in particular a thermoplastic elastomer (TPE), preferably TPE-S (based on styrene-ethylene-butadiene-styrene), TPE-V (based EDM / polypropylene) of TPE-U (polyurethane-based), a rubber, preferably an EPDM rubber, or a PUR, preferably a polyether-based or polyester-based PUR casting resin.
  • TPE thermoplastic elastomer
  • TPE-S based on styrene-ethylene-butadiene-styrene
  • TPE-V based EDM / polypropylene
  • TPE-U polyurethane-based
  • a rubber preferably an EPDM rubber
  • PUR preferably a polyether-based or polyester-based PUR casting resin.
  • the formwork support 1 with the shock-absorbing material 10 in the recesses 8 of the formwork 1 receives an excellent load capacity for impact or sudden stresses, which is significantly increased in particular in transverse or oblique direction of the carrier over conventional carriers.
  • This is achieved, inter alia, by; that thanks to the shock-absorbing filling material, so to speak, an internal suspension of the carrier is achieved, so that it can escape excessive stress peaks in the event of impact or sudden stresses due to deformation.
  • the carrier still has a simple construction, and in particular requires no elaborate reinforcements such as steel bolts, steel caps or the like.
  • the formwork support 1 described can be produced, for example, as follows. First, a top flange 2, a Bottom belt 4 and a web 6, which consist essentially of wood, connected together to form a formwork support. Alternatively, it can also be assumed directly from a commercially available formwork support, which has a top flange 2, a bottom flange 4 and a web 6. Subsequently, in the present exemplary embodiment, the recesses 8 are sawed or milled into the web 6 from the end face 1 "of the formwork support 1. The filling material 10 is then introduced into the recesses 8 in each case.
  • Fig. 3 shows schematically a second preferred embodiment of the formwork support 1 according to the invention. Identical or corresponding components are in each case provided with the same reference symbols in FIGS. 2 and 3, and a repeated description of these components is therefore unnecessary.
  • the embodiment shown in Fig. 3 differs from the first embodiment initially in that the forehead protection 12 as such is not made in one piece, but has two straps respectively associated portions which are integral with the filling material 10 of the recesses 8, and above also has a middle, the web associated portion 12 '.
  • This arrangement has the advantage that in the area of the belts 2, 4 or the web 6 each material can be used as a forehead protection, which is tailored to the particular requirements.
  • the forehead protection in the present embodiment more precisely, the portions 12 associated with the straps 2, 4, respectively, a reinforcing element 14, which also extends into the provided in the recesses 8 reinforcing material 10.
  • the reinforcing elements 14 are formed in the present embodiment by rings which surround the free end portions of the straps 2, 4, respectively.
  • the reinforcing elements 14 may in principle be arranged at any desired location within the end protection 12 and / or the filling material 10. However, in view of a particularly good effectiveness of the reinforcing elements 14, it is advantageous that the reinforcing elements or rings 14 directly surround the free ends of the straps 2, 4, i. abut directly against these, and are surrounded shock-absorbing to the outside of the filler 10 and / or the frontal protection 12.
  • the reinforcing elements 14 are preferably made of steel, aluminum or fiber-reinforced plastic. Instead of rings, other reinforcing elements may also be used, for example strips of wood, wood-based materials, metal, plastic or fiber materials, which are arranged so as to reinforce the belt-wood transversely or obliquely to the fiber direction in the region of the belt ends.
  • the production of the second embodiment of the formwork support 1 according to the invention shown in FIG. 3 also corresponds in principle to that of the first embodiment. It is too Note that the reinforcing elements 14 are preferably pushed after the introduction of the recesses 8 on the ends of the straps 2, 4, to then inject the plastic material for the filling material 10 and the forehead protection 12 integrally or stepwise or to pour. As a result, no separate attachment of the reinforcing elements 14 is required at the strap ends, since the fasteners are included during the ejection or pouring of the plastic material and connected to the strap ends.
  • the filling material 10 and the end protection 12 are connected to the formwork support 1 by gluing or comparable techniques.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Building Environments (AREA)
  • Vibration Dampers (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (16)

  1. Support de coffrage (1), comprenant une semelle supérieure (3) et une semelle inférieure (4) et une âme (6) reliant celles-ci, formées essentiellement en bois, où
    l'âme (6) et/ou au moins l'une des semelles (2, 4) présente (nt), au moins dans une zone d'extrémité (1') du support, au moins un évidement (8) qui, dans le cas d'une semelle (2, 4), est placé au moins dans la zone d'un recouvrement (U) de l'âme (6) ainsi que de façon limitrophe à l'âme (6), où le au moins un évidement (8) est muni d'un matériau de remplissage (10) présentant des propriété d'amortissement des chocs.
  2. Support de coffrage selon la revendication 1, caractérisé en ce que le au moins un évidement (8) ménagé dans la nervure (6) est placé au voisinage de la semelle supérieure (2) et/ou de la semelle inférieure (4).
  3. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce que le au moins un évidement (10) s'étend de l'âme, jusque dans la semelle supérieure (2) et/ou la semelle inférieure (4).
  4. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce que le matériau de remplissage (10) remplit pratiquement le au moins un évidement (8).
  5. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce qu'il présente au moins une protection frontale (12), couvrant, au moins par tronçons, une face frontale 1") placée dans la zone d'extrémité (1') du support de coffrage (1).
  6. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce que la protection frontale (12) est formée d'une seule pièce avec le matériau de remplissage (10) d'au moins un évidement (8).
  7. Support de coffrage selon la revendication 5 ou 6, caractérisé en ce que la protection frontale (12) entoure au moins partiellement la zone d'extrémité.
  8. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce que le matériau de remplissage (10) et/ou la protection frontale (12) est/sont formé(s) par un matériau synthétique, de préférence appliqué par projection ou par moulage.
  9. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce que le matériau de remplissage (10) et/ou la protection frontale (12) présente un matériau caoutchouc, un élastomère thermoplastique ou un PUR.
  10. Support de coffrage selon l'une des revendications précédentes, caractérisé en ce que le matériau de remplissage (10) et/ou la protection frontale (12) présente(nt) au moins un élément de renforcement (14), fabriqué de préférence en acier, en aluminium ou en matière synthétique renforcée par des fibres.
  11. Support de coffrage selon la revendication 10, caractérisé en ce que le au moins un élément de renforcement (14) est formé par une bague, qui, de préférence, entoure la semelle supérieure (2) et/ou la semelle inférieure (4).
  12. Procédé de fabrication d'un support de coffrage (1) formé essentiellement de bois, avec une semelle supérieure (2) et une semelle inférieure (4) et une âme (6) reliant celles-ci, le procédé présentant les étapes suivantes :
    fabrication d'une liaison rigide entre l'âme (6) ainsi que la semelle supérieure (2) et la semelle inférieure (4), pour former un support de coffrage (1),
    introduction d'au moins un évidement (8) dans l'âme (6) et/ou au moins une des semelles (2, 4), au moins dans une zone d'extrémité (1') du support de coffrage (1), qui, dans le cas d'une semelle (2, 4), est placé au moins dans la zone d'un recouvrement (U) de l'âme (8), ainsi que de façon limitrophe à l'âme (6), et
    introduction d'un matériau de remplissage (10), ayant des propriétés amortissant les chocs, dans le au moins un évidement (8).
  13. Procédé selon la revendication 12, caractérisé en ce que la liaison rigide de l'âme (6) à la semelle supérieure et inférieure (2, 4) s'effectue avant l'introduction du au moins évidement (8).
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce que le au moins un évidement (8) est obtenu par usinage à partir d'une face frontale de l'âme (6) et/ou de la au moins une semelle (2, 4), par creusement par sciage ou par fraisage.
  15. Procédé selon au moins l'une des revendications 12 à 14, caractérisé en ce qu'en outre est appliquée une protection frontale (12) qui couvre, au moins par tronçons, une face frontale (1'), placée dans la zone d'extrémité (1"), du support de coffrage (1).
  16. Procédé selon l'une des revendications 12 à 15, caractérisé en ce que le matériau de remplissage (10) et/ou la protection frontale (12) est/sont appliqué(s) par projection, ou moulage d'un matériau synthétique.
EP04705090A 2003-02-11 2004-01-26 Support de coffrage Expired - Lifetime EP1606475B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200430250T SI1606475T1 (sl) 2003-02-11 2004-01-26 Nosilec opaĺ˝a

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10305613A DE10305613B4 (de) 2003-02-11 2003-02-11 Schalungsträger
DE10305613 2003-02-11
PCT/EP2004/000621 WO2004072408A1 (fr) 2003-02-11 2004-01-26 Support de coffrage

Publications (2)

Publication Number Publication Date
EP1606475A1 EP1606475A1 (fr) 2005-12-21
EP1606475B1 true EP1606475B1 (fr) 2007-02-28

Family

ID=32841634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04705090A Expired - Lifetime EP1606475B1 (fr) 2003-02-11 2004-01-26 Support de coffrage

Country Status (14)

Country Link
US (1) US8225580B2 (fr)
EP (1) EP1606475B1 (fr)
CN (1) CN100374672C (fr)
AT (1) ATE355433T1 (fr)
BR (1) BRPI0407391B8 (fr)
CA (1) CA2518788C (fr)
DE (2) DE10305613B4 (fr)
ES (1) ES2282844T3 (fr)
HK (1) HK1087451A1 (fr)
PL (1) PL212657B1 (fr)
RU (1) RU2320836C2 (fr)
SI (1) SI1606475T1 (fr)
UA (1) UA83024C2 (fr)
WO (1) WO2004072408A1 (fr)

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DE102008059817A1 (de) * 2008-12-01 2010-06-02 Peri Gmbh Holzträger für den Baubereich
US8910455B2 (en) * 2010-03-19 2014-12-16 Weihong Yang Composite I-beam member
US8820033B2 (en) * 2010-03-19 2014-09-02 Weihong Yang Steel and wood composite structure with metal jacket wood studs and rods
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EP2730720A1 (fr) 2012-11-09 2014-05-14 Pfeifer Holz GmbH & Co KG Support de coffrage
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US6158190A (en) * 1999-03-29 2000-12-12 East Ohio Machinery Insulated composite steel member
CN2360494Y (zh) * 1999-04-09 2000-01-26 于爽英 高强木工字梁
DE19962964A1 (de) * 1999-12-24 2001-07-05 Wilfried Ensinger Voll- oder Hohlkammerkunststoffprofile
EP1309448A1 (fr) * 2000-06-09 2003-05-14 The Dow Chemical Company Composite thermoplastique renforce par des fibres colle sur du bois
US7634891B2 (en) * 2004-09-09 2009-12-22 Kazak Composites, Inc. Hybrid beam and stanchion incorporating hybrid beam
US8011165B2 (en) * 2006-06-07 2011-09-06 Integritect Consulting, Inc. Composite assembly with saturated bonding mass and process of reinforced attachment

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US8225580B2 (en) 2012-07-24
EP1606475A1 (fr) 2005-12-21
HK1087451A1 (en) 2006-10-13
RU2005128286A (ru) 2006-02-27
US20060070339A1 (en) 2006-04-06
DE502004003040D1 (de) 2007-04-12
BRPI0407391A (pt) 2006-02-07
BRPI0407391B1 (pt) 2017-03-14
PL376662A1 (pl) 2006-01-09
DE10305613B4 (de) 2006-11-09
RU2320836C2 (ru) 2008-03-27
ES2282844T3 (es) 2007-10-16
CN100374672C (zh) 2008-03-12
CA2518788A1 (fr) 2004-08-26
WO2004072408A1 (fr) 2004-08-26
CA2518788C (fr) 2011-06-14
SI1606475T1 (sl) 2007-06-30
PL212657B1 (pl) 2012-11-30
CN1748067A (zh) 2006-03-15
BRPI0407391B8 (pt) 2017-03-28
ATE355433T1 (de) 2006-03-15
UA83024C2 (en) 2008-06-10
DE10305613A1 (de) 2004-09-09

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