EP0674067A1 - Panneau à cadre pour le coffrage de béton - Google Patents

Panneau à cadre pour le coffrage de béton Download PDF

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Publication number
EP0674067A1
EP0674067A1 EP94118146A EP94118146A EP0674067A1 EP 0674067 A1 EP0674067 A1 EP 0674067A1 EP 94118146 A EP94118146 A EP 94118146A EP 94118146 A EP94118146 A EP 94118146A EP 0674067 A1 EP0674067 A1 EP 0674067A1
Authority
EP
European Patent Office
Prior art keywords
frame
formwork
stiffening
girders
support
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Withdrawn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
EP94118146A
Other languages
German (de)
English (en)
Inventor
Niels Dipl.-Ing. Hollmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0674067A1 publication Critical patent/EP0674067A1/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Withdrawn legal-status Critical Current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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/023—Forming boards or similar elements with edge protection
    • E04G2009/025—Forming boards or similar elements with edge protection by a flange of the board's frame

Definitions

  • the invention relates to a frame formwork for concreting, constructed with outer frame beams that form a rectangle; inner stiffening beams which extend between two opposite frame beams; and a formwork panel attached to at least some of the beams.
  • the stiffening beams - viewed in cross-section - have a width that does not change significantly over their height.
  • the side of the relevant stiffening beam adjacent to the formwork panel forms the bearing surface for the formwork panel.
  • the mutual spacing of the stiffening girders and the thickness of the formwork panel are chosen so that no unduly large deformation of the formwork panel takes place under the concrete pressure during concreting.
  • the invention has for its object to make a frame formwork available in the statically more favorable support conditions for the formwork panel.
  • the frame formwork according to the invention is characterized in that at least some of the stiffening beams - viewed in cross section - each have two spaced-apart bearing surfaces for the formwork panel and that in the respective stiffening beam the area between the two bearing surfaces is set back relative to the bearing surfaces.
  • each stiffening beam designed in this way assumes the function of two stiffening beams in conventional frame formwork.
  • the frame formwork - designed for the same concrete pressure of preferably 60 to 80 kN / m2 - can be built with a lower overall weight. You can change the number of stiffeners per Reduce the unit of length of the frame formwork and / or work with a thinner formwork panel.
  • stiffening beams are preferably also applied to the frame beams running parallel to the stiffening beams.
  • all stiffening beams have the two spaced-apart bearing surfaces and the recessed area. It is very particularly preferred to design all the stiffening girders identically, in particular with regard to their cross-sectional shape.
  • the recessed area is formed as a connection between two support legs, each of which has one of the contact surfaces.
  • the two contact surfaces are coupled together despite their distance, and the connection counteracts any spreading tendency of the support legs.
  • the center distance of the two spaced support surfaces in the respective stiffening support is substantially equal to the center distance between one of its support surfaces and the next support support surface for the formwork panel.
  • the formwork is supported by the stiffening girders with essentially constant distances between the "support lines", which statically represents the best case.
  • the distance between the center of the inner bearing surface and the outer boundary is preferably made approximately half as large as the bearing surface-center distance for the stiffening girders with two spaced-apart bearing surfaces.
  • the spacing counteracts the tendency of the formwork panel edge to come up a little on the stiffening girder parallel to the girder.
  • the respective stiffening beams and / or the relevant frame beams - viewed in cross section - are each considerably wider on their side adjacent to the formwork panel than on their side away from the formwork panel. Roughly speaking, this can advantageously result in an essentially Y-shaped cross-sectional shape of the stiffening beams.
  • the frame girders parallel to the stiffening girders preferably have a cross-sectional shape which - roughly speaking - corresponds to the longitudinally halved cross-sectional shape of a stiffening girder.
  • the stiffening girders and / or the frame girders are preferably made of aluminum, preferably extruded aluminum profiles.
  • the term aluminum naturally also includes aluminum alloys. A particularly good ratio between weight and strength is achieved in the preferred embodiment as a single-chamber or multi-chamber hollow profile.
  • the frame formwork according to the invention can also be realized with steel girders.
  • the invention also makes available a frame formwork of the type mentioned in the introduction, in which mechanical connecting elements or adhesive connections are provided for the weld-free connection of the stiffening beams to the adjacent frame beams and / or the frame beams.
  • the sweat-free connection by means of mechanical connecting elements or adhesive connections brings with it a whole range of advantages which are very important in practice.
  • the required connections can be made conveniently, quickly and without creating dirt. If you ever need tools to create the connections, they are simple and inexpensive tools. Connection techniques are preferably used which result in connections which can later be detached again with little effort. This also applies to adhesive bonds, since you can work with adhesives that e.g. can be removed again by heating or with the help of solvents.
  • the girders can be used in finished, surface-treated or surface-protected form for the assembly of the frame formwork. Post-processing or surface post-treatment in the area of the connection points are unnecessary. Overall, the frame formwork can be produced much more efficiently.
  • Screws, rivets, snap-in connector elements and the like are preferably used as mechanical connecting elements. It goes without saying that the mechanical connecting elements do not necessarily have to be separate connecting elements, but can at least partially be formed in one piece on the carriers.
  • the stiffening girders are in each case formed at both ends with at least one front-side recess which rests on a shoulder of the adjacent frame girder. This ensures an optimal derivation of the support forces from the stiffening beam in question onto the two adjacent frame beams. If the connection between the stiffening girder and the frame girder is made with mechanical connecting elements or with an adhesive connection, this connection is not burdened by the supporting forces. It goes without saying that there may also be several recesses at each end of the stiffening support and that these recesses may cooperate with several shoulders of the adjacent frame support.
  • stiffening girders which are less high and which rest at the ends with their undersides on a shoulder of an adjacent frame girder.
  • the rest end regions of the stiffening girders can be formed by separate components which are fastened to the main region of the stiffening girder concerned, preferably by means of the connecting screws between the adjacent frame support and the stiffening support.
  • the stiffening girders can have a shape on their end faces such that the end faces correspond to the profile course of the adjacent frame girder facing them. Such a shape of the end faces can be easily produced by milling.
  • the frame girders and / or the stiffening girders preferably have an undercut profile space on their side remote from the formwork panel. Below is a more detailed description of what this profile space can be used for.
  • the frame supports have a shoulder on the inside of their foot remote from the formwork panel, which shoulder can be engaged by a frame shutter connection lock.
  • the frame girders can be mitred at the corners of the frame formwork and then connected to one another.
  • a connection in the area of the corners by an impact between the end face of one frame support and the side face of the other frame support is also possible in principle.
  • the carriers have channels for receiving the screws, rivets, clamping pins, locking pins or the like, which extend in the longitudinal direction of the carrier.
  • Such channels can be easily produced, particularly in the case of extruded profiles.
  • formwork panel formwork panels usually have a thickness of around 18 to 21 mm.
  • formwork panels with a thickness of 10 to 14 mm are preferably used, a particularly preferred value being about 12 mm.
  • the distances between the support points of the Formwork panel are approximately 30 cm, in the case of the frame formwork according to the invention, this distance is preferably in the range from 12 to 20 cm, a particularly preferred value being approximately 15 cm.
  • frame formwork which contains one or more of the features specified in the dependent claims but does not have the characterizing feature of claim 1 represents new and inventive frame formwork. This is particularly true for frame formwork with the features of claim 2, 4, 5, 6, 8, very particularly 10, 11, 13, 14. Frame formwork with one or more of these features also have independent inventive meaning independently of claim 1.
  • the width of the stiffening beams according to the invention increases the connection base for the connection with the two adjacent frame beams in the area adjacent to the peeling board. In terms of strength, there are more favorable conditions for preventing deformation of the frame formwork in the manner of a parallelogram shift.
  • Another object of the invention is a peeling for concreting, characterized in that it has a first area, which is constructed with frame formwork, and a second area, which is constructed as a girder formwork; and that the first region and the second region adjoin one another without a jump in height.
  • the formwork should be bounded on the back by a continuous plane. This allows a simple and highly stable with continuous crossbars To create a transition connection between the two types of formwork.
  • the frame formwork of the first area are frame formwork according to the invention, as described above.
  • the frame peeling 2 shown in FIG. 1 essentially consists of two mutually parallel longitudinal frame members 4, two parallel frame members 6, nine stiffening members 8 and a formwork panel 10.
  • the frame members 4 and 6 are connected by corner connectors 12 to form a rectangular frame connected.
  • the stiffening girders 8 run parallel to the transverse frame girders 6 and divide the length of the frame formwork 2 into equal distances. With their two faces, they are Stiffening beam 8 each connected to the two longitudinal frame beams 4.
  • the frame formwork 2 can be designed in different sizes.
  • a typical range of dimensions measured in the direction of the longitudinal frame supports 4 is 150 to 300 cm
  • a typical range of the width measured in the direction of the transverse frame supports 6 is 60 to 120 cm.
  • longitudinal frame carrier and "transverse frame carrier” does not necessarily mean that the transverse frame carriers 6 are shorter than the longitudinal frame carriers 4.
  • the longitudinal frame support 4 In Fig. 3 you can see the structure of the longitudinal frame support 4 in detail. It is a three-chamber hollow profile made of aluminum, which is produced by extrusion.
  • the longitudinal frame carrier 4 At the top in FIG. 3 , the longitudinal frame carrier 4 has a support surface 12 for an edge region of the formwork panel 10, the support surface 12 being delimited on the outside by a protruding nose 14.
  • the frame support 4 At the bottom in FIG. 3 , that is to say on its side remote from the formwork panel 10, the frame support 4 has an undercut profile space 16 which is open at the bottom in the central region.
  • a stiffening beam 8 In Fig. 3 you can also see a stiffening beam 8 in side view.
  • the stiffening beam 8 is a two-chamber hollow profile, produced by extrusion from aluminum.
  • the cross-section of the stiffening support 8 has a shape that can be described as Y-shaped.
  • the stiffening support 8 has an undercut profile space 16 like the longitudinal frame support 4 described further above.
  • the stiffening support 8 On its side facing the formwork panel 10, the stiffening support 8 provides two support surfaces 18 for the formwork panel 10.
  • the support surfaces 18 extend in a strip shape perpendicular to the Drawing plane of FIG. 4 .
  • the front side of the stiffening support 8 located at the top in FIG. 4 is set back a bit relative to the bearing surfaces and forms a recessed area 19.
  • the cross-sectional shape of the cross-frame support 6 corresponds - with the exception of the differences to be described - essentially to a longitudinally cut half of the stiffening support 8.
  • One of the differences is that the cross-frame support 6 on its side adjacent to the formwork panel 10 in its side shown in FIG. 4 left, ie outer, area has a support surface 20 for the formwork panel 10, which is delimited on the outside by a protruding nose 22.
  • the foot of the transverse frame support 6, that is to say its most distant area from the formwork panel 10, protrudes inwards so that a shoulder 24 is formed there. Otherwise, the foot is designed as in the case of the longitudinal Frame beams 4 and the stiffening beams 8, ie with an undercut profile space 16.
  • the stiffening beam 8 has on each of its end faces 26, specifically in the area furthest from the formwork panel 10, a square or rectangular recess 28 in the side view of FIG. 3 . With the horizontal surface of the recess 28 in FIG. 3 , the stiffening support 8 rests on a shoulder 30, which is formed on the inside at the foot of the relevant longitudinal frame support 4.
  • forces acting on the formwork panel 10 from top to bottom which correspond to the concrete pressure, can be positively derived into the frame of the frame formwork 2 via the stiffening girders 8 and the described recess 28-shoulder 30-support.
  • FIG. 4 one can see the 4 measured distances in the direction of the longitudinal frame support, in which the shuttering panel 10 by the transverse frame beam 6 and the stiffening support 8 is supported.
  • the formwork panel 10 is screwed to these supports 6, 8.
  • the distance between the two contact surfaces 18 is the distance a.
  • the distance also a again measured from center to center of the bearing surfaces 18,32 respectively of screw hole to screw hole.
  • the distance between the left, lateral, outer boundary surface 23 and the center of the right support surface is 20 a / 2.
  • the formwork panel 10 is e.g. made of multi-layer glued wood and can have a plastic layer on its concrete side. It could also consist of fiber-reinforced plastic or plastic with a honeycomb structure core. Rubber sealing strips are arranged between the lugs 14 and 22 and the outer boundary surface of the formwork panel 10.
  • Each stiffening beam 8 is screwed on the end face to the two longitudinal frame beams 4 to which it adjoins.
  • screw-in channels 34 which are open for manufacturing reasons on a small part of this circumference, have been molded on during extrusion at four points.
  • screws 36 are screwed in the transverse direction through the respective longitudinal frame support 4 into the screw-in channels 34.
  • the outside of the relevant longitudinal frame carrier 4 is in Compared to the head area and the foot area slightly set back so that there is space for the heads of the screws 36.
  • the end faces of the cross frame members 6 can be designed in the same shape as the end faces 26 of the stiffening members 8, and the cross frame members 6 can be screwed to the longitudinal frame members 4 in a manner analogous to that of the stiffening members 8.
  • the open end faces of the longitudinal frame supports 4 can be closed with inserted plastic caps.
  • FIG. 6 A possible embodiment of a corner connector is shown in Fig. 6 .
  • the corner connector 12 roughly speaking, the shape of a cuboidal aluminum block.
  • the surface 38 of the corner connector 12 is provided for contact with the end face of a longitudinal frame support 4.
  • Another surface 40, which extends at right angles to the surface 38, of the corner connector 12 is provided for abutment against the end face of a transverse frame support 6. It is understood that the end faces of the frame supports 6, 8 are formed by flat surfaces.
  • screw holes 42 open, which are arranged according to the arrangement of screw channels 44 in the longitudinal frame members 4 and of screw channels 46 in the transverse frame members 6.
  • the screw-in channels 44, 46 are designed like the screw-in channels 34 of the stiffening girders 8.
  • the screw holes 42 extend at right angles to the surfaces 38 and 40 through the corner connector 12 so that screws can be inserted from the outside thereof.
  • Countersunk holes are provided on the outer sides around the screw holes 42 so that there is space for the screw heads.
  • material areas could protrude from the surfaces 38 and 40, which protrude into the profile chambers of the transverse frame girders 6 and the longitudinal frame girders 4 and thus provide a more stable, positive fit Anchoring. 6 that the corner connector has a nose 44 running around the corner to continue the lugs 14 and 22 of the frame supports 4 and 6.
  • the beams 4, 6, 8 can alternatively also be formed as a profile bent from sheet metal.
  • FIG. 7 shows a section of a formwork for concreting, partly in section.
  • Carrier formwork essentially consists of a formwork panel 54, which is normally much larger and somewhat thicker than the formwork panel 10 in frame formwork 2, and formwork girders 56, which are fastened to the back of the formwork panel 54 and run parallel to one another and support the latter.
  • H the frame formwork 2 and the subsequent girder formwork have the same height H, that is to say they are delimited on the back by a common, imaginary plane. It is thus possible to connect the frame formwork 2 and the subsequent girder formwork to one another with a common crossbeam 58 at the transition shown.
  • Fig. 7 also illustrates that one can use the undercut profile spaces 16 described above, which are also present in the formwork beams 56, for attaching the cross bar 58 with the aid of screw bolts 60 which have a hammer head for insertion into the undercut profile spaces . It should also be mentioned that formwork accessories, such as inclined supports and the like, can also be attached using these undercut profile spaces.
  • Connection locks for the aligned connection of adjacent frame formwork 2 can behind the shoulder 30 of the longitudinal frame beams 4 or reach behind the shoulder 24 of the cross frame support 6.

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  • 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)
EP94118146A 1993-11-19 1994-11-17 Panneau à cadre pour le coffrage de béton Withdrawn EP0674067A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4339554A DE4339554A1 (de) 1993-11-19 1993-11-19 Rahmenschalung für das Betonieren
DE4339554 1993-11-19

Publications (1)

Publication Number Publication Date
EP0674067A1 true EP0674067A1 (fr) 1995-09-27

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ID=6503007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118146A Withdrawn EP0674067A1 (fr) 1993-11-19 1994-11-17 Panneau à cadre pour le coffrage de béton

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EP (1) EP0674067A1 (fr)
DE (1) DE4339554A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507384B4 (de) * 1995-03-03 2011-08-11 Friedr. Ischebeck GmbH, 58256 Rahmenschalungs-Elemente
ATE187794T1 (de) * 1995-03-31 2000-01-15 Plettac Ag Rahmen für eine schaltafel
DE102019107433A1 (de) * 2019-03-22 2020-09-24 Peri Gmbh Tragstruktur für ein Schalungspaneel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382559A1 (fr) * 1977-03-02 1978-09-29 Guernut Tahmazian Yves Banche de coffrage
EP0062420A1 (fr) * 1981-03-27 1982-10-13 Aluma Systems Incorporated Coffrage pour constructions en béton
EP0369129A1 (fr) * 1988-11-12 1990-05-23 Maier, Josef Panneau de coffrage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE905029A (nl) * 1986-07-02 1986-11-03 Cometal Nv Bekistingspaneel, evenals spangereedschap, sleutelmoer en langsdrager hierbij aangewend.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382559A1 (fr) * 1977-03-02 1978-09-29 Guernut Tahmazian Yves Banche de coffrage
EP0062420A1 (fr) * 1981-03-27 1982-10-13 Aluma Systems Incorporated Coffrage pour constructions en béton
EP0369129A1 (fr) * 1988-11-12 1990-05-23 Maier, Josef Panneau de coffrage

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Publication number Publication date
DE4339554A1 (de) 1995-05-24

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