EP2798133B1 - Panel for a system ceiling formwork, and a system ceiling formwork - Google Patents

Description

According to the preamble of claim 1, the present invention relates to a panel for system ceiling formwork, the panel comprising a frame framing a panel interior, the frame longitudinally extending parallel to a panel longitudinal direction, and two parallel to a panel transverse direction which is oriented perpendicular to the longitudinal direction of the panel, having extending and connected to the frame longitudinal sections frame cross sections, the panel comprises a grid, in particular a wire guard, the parallel to the longitudinal direction panel longitudinal bars and connected, parallel or inclined to the Panel transverse direction extending transverse struts or connected to the longitudinal struts cross struts, with parallel or inclined to the panel transverse direction oriented main extension direction, in particular along its entire length or in at least one longitudinal section, curved and / or, in particular one or more longitudinal sections, inclined to the main extension direction has.

A panel and a system slab formwork with panels is from the published patent application DE 10 2004 004 883 A1 the applicant known. Such panels and system slab formwork, which can also be referred to as slab formwork systems, serve in a manner known per se for the production of slab formwork onto which a concrete floor can be concreted. On the one hand, the system slab formwork comprises a supporting framework constructed of vertical supports and crossbeams which can be suspended from drop heads for vertical support. Depending on requirements, the formwork can in the form of so-called. Formwork panels, for example, directly on the top of the support grate, which is formed from oriented in different directions crossmember, laid and be attached to it, for example, with nails. Deviating from or proposing to supplement DE 10 2004 004 883 A1 a so-called slab formwork panel, which has a suspension on the drop heads and the cross members for support frame with a mounted on the top, closed formwork skin. The cross member, which is different depending on the design between main beams and sub-carriers, can be hung on the heads of the vertical supports and / or laterally on other main beams, so that a modular design is possible. The hanging is done by means of underside grooves on the cross members and on the panels, wherein the groove bottom a support surface for vertical Support on Einhakstegen the drop heads or on lateral Einhakrippen the main carrier forms. It should on the one hand for reasons of stability, a certain height of the cross member and panels are not exceeded, while on the other hand, the drop height or the drop height of the drop heads between the two lockable positions because of the high loads resting on it should be as low as possible. In the known and established in the market system slab formwork, the chosen Absenkweg the drop heads corresponds approximately to the profile height of the cross member and the slab formwork panels, which has proven to be beneficial and proven in practice. In order to be able to remove the known slab formwork panels in spite of these geometrical conditions after a certain hardening of the concrete floor at first still to support the concrete floor remaining vertical supports for at least partial decoating from below, suggests DE 10 2004 004 883 A1 pivotable engagement elements before.

More recently, such system ceiling formwork has been subject to additional requirements within the EU member states for harmonized health and safety legislation. These require on the one hand that the formwork panels or plywood on the support grid of cross beams, which is distinguished depending on the design between so-called main and secondary beams, may only be placed from above from above, if all columns in the support grid is less than 0, 3 meters, so that no one can crash through the support grid. This means that a conventional support grid, which has greater distances between cross members, for the laying of wood formwork panels (formwork skin) must not be committed. It is also required that an orderly stripping from a safe position from a scaffold below a cast steel concrete slab must be possible.

In addition, especially in the French market as smooth as possible, flat concrete ceiling soffits are required, which allow only a few, so far apart visible joints (seams) at the joints of the formwork parts. For example, in France are often used Finnish Schalhäute in the format 2.44 meters x 1.22 meters (= 3m ² ), compared to the DE 10 2004 004 883 A1 known ceiling formwork panels show significantly fewer joints. For such applications, therefore, not known from the above-mentioned publication cover slab panel is used, but Schalhäute the required size attached directly to the support grid, although the safe stripping of said format with about 30 kg individual weight is not unproblematic and compliance with the now For reasons of safety required distance between only 0.3 meters means the cross member great effort.

In the prior art is a generic panel WO 2010/108997 A1 known, which discloses all the features of the introductory part of claim 1 or 2.

WO 2011/057977 A1 Applicant discloses a side guard and side protection system. Out US 6,378,837 B1 is a reusable cement support frame known. EP 1 617 013 A1 discloses a horizontal formwork. US 3,045,786 A describes a formwork support beam for use in concrete structures. Out EP 0 511 921 A1 For example, a modular assembly of slab formwork posts and a method and formwork utilizing this assembly are known.

Against this background, the present invention has the object to provide an advantageous panel, which in particular for the purpose to meet requirements for safety at work easier, and in particular in the DE 10 2004 004 883 A1 known system slab formwork compatible and used in conjunction with it to achieve ceiling formwork.

The object is achieved according to claim 1 in conjunction with its characterizing features, that the frame at its two longitudinal ends or in the region of its two longitudinal ends each having at least one engagement member which is integrally formed by one of the frame cross sections, extending in the panel transverse direction extending and extending adjacent to each of a lower-side support surface of the frame in its cross-section perpendicular to or obliquely to one of the panel longitudinal direction and the panel transverse direction spanned geometric panel plane, in particular downwards, that the engagement element is an integral part of a frame outside , extending in the panel transverse direction side wall of the frame cross section and laterally extending in a panel transverse direction, downwardly open transverse groove bounds, the groove bottom forms the bottom support surface for supporting the panel on a slab formwork scaffolding, and that on d he in each case frame inside side wall of the two frame longitudinal sections extending in the panel longitudinal direction, open to the panel interior, undercut in cross-section longitudinal groove is formed that extends along both longitudinal edges of the grating one longitudinal strut, and that the cross struts with their two Ends ever engage in one of the two longitudinal grooves, so that in each case one of the two edge-side longitudinal struts of the grid is held laterally positively in the respective undercut hollow cross-sectional area of both longitudinal grooves.

In this way, an effective in panel width direction, high load clamping of the grid along its two longitudinal grids on the frame longitudinal sections is achieved, so that the grid can not be pushed out of the frame down even with a vertically acting thereon larger load. The main direction of extension of a transverse strut is understood to mean the direction of an imaginary straight connecting line between the two longitudinal ends of the transverse strut. Alternatively or in combination with the gripping of the grid on the frame longitudinal sections, gripping of the grid at the frame cross sections can be realized, whereby the same effects and advantages can be achieved.

According to the preamble of claim 2, the present invention relates to a panel for a system ceiling formwork, the panel comprising a frame framing a panel interior, the frame longitudinally extending parallel to a panel longitudinal direction, and two parallel to a panel transverse direction oriented perpendicular to the panel longitudinal direction, comprising frame cross sections extending and connected to the frame longitudinal sections, the panel comprising a grid, in particular a wire guard, the transverse struts parallel to and parallel to the panel transverse direction, parallel or inclined to the panel Panel longitudinally extending longitudinal struts or connected to the cross struts longitudinal struts, which are curved with parallel or inclined to the panel longitudinal direction oriented main direction, in particular along its entire length or in at least one longitudinal section, curved and / or, in particular in one or more longitudinal sections, extending inclined to the main extension direction.

The above-mentioned object is achieved according to claim 2 in conjunction with its characterizing features that the frame has at its two longitudinal ends or in the region of its two longitudinal ends in each case at least one engagement element which is integrally formed by each one of the frame cross sections, which in panel Transverse extending and adjacent to each of a lower-side support surface of the frame in its cross-section perpendicular to or obliquely to one of the panel longitudinal direction and the panel transverse direction spanned geometric panel plane, in particular downwards, that the engagement element is an integral part of frame outside, extending in the panel transverse direction side wall of the frame cross section and laterally extending in a panel transverse direction, downwardly open transverse groove bounds, the groove bottom forms the bottom support surface for supporting the panel on a slab formwork scaffolding, and d Ass is on the respective inside frame side wall of the two frame cross-sections extending in the panel transverse direction, open to the panel interior, in cross-section undercut transverse groove is formed that extends along both grating transverse edges each have a cross member, and that the longitudinal struts with engage each of its two ends in one of the two transverse grooves, so that in each case one of the two edge-side transverse struts of the grid is held in a form-fitting manner laterally in the respective undercut hollow cross-sectional area of both transverse grooves.

The main extension direction of a longitudinal strut is understood to be the direction of an imaginary straight connecting line between the longitudinal ends of the longitudinal strut. Suitably, the grid extends in the entire cross-section of the panel interior, which extends parallel to a panel plane which is spanned from the panel longitudinal direction with the panel transverse direction.

Preferably, it is contemplated that the grid is held laterally in the panel transverse direction positively in longitudinal grooves of the two frame longitudinal sections and adjacent to the two frame transverse sections, wherein the frame longitudinal sections are arranged with respect to the panel longitudinal direction between the frame cross sections.

A preferred position of use for the production of the formwork for a reinforced concrete slab may be a layer which occupies the panel in a condition of use in which it bears against its two-sided engagement elements is suspended from the support frame of a system-slab formwork and in which the panel plane extends parallel or slightly inclined to a horizontal plane, wherein the engagement elements parallel or slightly obliquely to a perpendicular to the horizontal plane vertical direction down to a free longitudinal end point. In this respect, the example used to illustrate the preferred, for the production of formwork for a reinforced concrete slab use position can be one of various possible use layers, which is determined by the fact that the support surface is located on the respective frame cross section on the underside and the adjacent engagement element down extends. Instead of a preferred position of use could therefore also speak of an example considered, possible in use rotational position of the panel, in which the panel can be brought by rotation from other possible rotational positions. In the explanation of the panel but is not useful reference to any of the possible, but illustratively referred to the above-mentioned preferred position of use or rotational position, which means that the panel is considered by reference to the preferred position of use in this exemplary representation selected rotational position ,

A proposed panel provided with a grid according to the invention may also be referred to as a "mesh panel". The spacing remaining within the panel in the panel plane can be set sufficiently small by selecting a grid with a small mesh size in order to meet the requirements for work safety. If, when suspending the panels on a support structure, care is taken that the spacing between adjacent panels is less than 0.3 meters, a supporting framework covered with panels according to the invention can also be made by persons in accordance with the new safety regulations for laying formwork panels. The proposed grid affects surprisingly advantageous in two respects. On the one hand, a lighter panel weight is possible compared to a closed panel cover, on the other hand, the positive engagement of bars in the grooves causes a captive and non-destructive connection with high fall loads. For mounting, it is preferable to proceed in such a way that the wire protection grid is inserted into the grooves of the two opposing formwork beams before the frame longitudinal sections and the frame cross sections are firmly connected to one another, for example welded. If, for example, the frame transverse sections overlap the end faces of the longitudinal grooves after assembly, the grid is held captive in the longitudinal grooves and, if the grid extends on both longitudinal ends up to the frame cross sections, also immovably received. The lateral clamping of the grid in the longitudinal grooves thus offers, in addition to the high connection strength, also advantages with regard to simple assembly. The grid can be designed in particular with regard to the selected cross-section of the longitudinal and transverse struts and the intermediate distance of the longitudinal and transverse struts, as well as in terms of the selected material to endure high drop weights nondestructively. Preferably, an adaptation to the weight of a falling person of 100 kg is given.

There are numerous possibilities for the preferred development of the panel according to the invention. So there is the possibility that in a position of use, in particular in the preferred exemplary position of use described above, the panel on each of the two frame cross sections of the two at the top, or on the upper surface, parallel to the panel transverse direction extending edges of the frame outside Edge laterally below (ie in a direction perpendicular to the panel longitudinal direction and the panel transverse direction, which also serves as a panel height direction is referred to, lying deeper) of the frame inside edge extends. A so far expedient embodiment is seen in the fact that the frame cross sections each have a respect to the preferred position of use of the panel frame upper side, preferably in itself flat, surface extending sloping from its frame inside edge to its frame outside edge in the preferred position of use of the panel. In particular, it is also preferred in this context that the frame longitudinal sections are arranged with respect to the panel longitudinal direction between the frame cross sections. It is possible that each frame cross section is formed as a hollow profile carrier having a wall which extends parallel to the panel plane, and a wall which forms an acute angle with the panel plane, wherein the height of the frame cross section in a panel height direction perpendicular to the panel longitudinal direction and the panel transverse direction frame outside is lower than the frame inside. When the panel is in said preferred position of use, the wall parallel to the panel level is the bottom wall and the other wall is the top wall. As appropriate, it is also considered that the frame cross sections on the frame longitudinal sections frame upper side and / or frame underside with respect. The panel height direction adjacent flush. Even if, as is preferred, at least the profile height of the frame longitudinal sections corresponds at least approximately to the Absenkweg or the drop height of the drop heads, according to this at the frame cross sections to the longitudinal ends of the panels towards decreasing height, the panels after concreting and after the occurrence of a certain Solidification of the concrete floor are already removed from the support frame down, while the vertical supports should initially remain for further support of the concrete pavement. In this respect, reference is also made to the following description of the figures.

For the description of the panel, the terms frame upper side or top side and frame bottom side or bottom side are used in relation to this preferred position of use explained above. The terms also selected for the frame longitudinal sections and frame cross sections frame outside and outside denote their remote from the panel interior, so far on the frame outward side, while the names frame inside or inside the pointing to the panel interior or adjacent thereto, so far from the frame inward side.

The invention is characterized to the DE 10 2004 004 883 A1 known system slab formwork, which complements the familiar system slab formwork and simplifies compliance with new occupational safety requirements in applications. The panel of the invention may alternatively or in combination to the DE 10 2004 004 883 A1 known slab formwork panels are hung on the support frame of a system slab formwork. For this purpose, the lower-side engagement elements can be hooked either behind a so-called. Einhaksteg the drop head of a vertical support or behind a lateral Einhakrippe a cross member for vertical support. For the production of shuttering surfaces, in which visible formwork joints at the bottom of the concrete ceiling are permitted only in comparison to the dimensions of the conventional slab formwork panels longer distances, the panels according to the invention can now be used preferably.

The panel of the invention allows the required for reasons of safety orderly stripping from a secure position of a scaffold below the concrete ceiling at the same time stable, simple and robust construction. The at the longitudinal ends of the panel, ie in the area of his Support, compared to the longitudinal frame sections reduced height to support makes it possible that even in the panel according to the invention the height of serving for supporting the Schalthauttafeln frame longitudinal sections about the established in the market existing Absenkweg (also called drop height) correspond to the drop heads on the vertical supports can, without the swinging of the panels down the proposed by the cited published kinematics is required. This allows for advantageous simple and stable design compatibility with the previous system. Since the tops of cross beams, frame longitudinal sections of the panels and vertical supports when the drop heads for concreting are in their upper position to lie in a common plane, the other hand also predetermined height of Einhakstege and Einhakrippen also a certain height of the panels given in her the formwork wearing sections. After concreting and lowering the drop heads in their lower locking position, the panels can be removed only at first still serving to support the concrete floor vertical supports, if they can swing out down. Even if the height of the panels in the cladding-bearing sections corresponds to the lowering or fall height or even slightly larger, compared to a reduced height of the panels allows the supports at the longitudinal ends pivoting down and the removal of the panel. While in the known in the art ceiling formwork panels, the formwork supporting or forming surface is designed in a generally planar way in itself, the preferred embodiment described deviates from this conventional structure and thereby combines the aforementioned advantages. For example, with a fall travel of the drop heads of 100 mm, the height of the frame longitudinal sections measured from the bottom to the top can be 100 mm, while those from the bottom to the top at the frame cross sections In the area of the supports (ie in the area of the support surfaces and engagement elements) measured height, for example, is only 80 mm. The panel according to the invention may have the same dimensions in plan as the known slab formwork panel, which simplifies formwork planning, storage and logistics. In so far preferred dimensions of 1.7 meters x 0.45 meters in plan can be in a structure with aluminum profiles and, for example. With a galvanized steel wire mesh a weight of only about 14 kg reach, so that the panel still good of a individual person is able to handle.

It is also preferred that the frame transverse sections adjoin the frame longitudinal sections on the frame upper side and / or on the frame side flush (ie without height offset or without offset in a direction transverse to the panel plane). There is the possibility that the two frame longitudinal sections are two profiled beams extruded from one another, preferably extruded from aluminum or from an aluminum alloy, and at the two frame cross sections two transverse cross sections, preferably made of aluminum or of an aluminum cross section. Alloy extruded profile beam is. In this respect, it is preferred that the respective profile carriers have an unchanged cross-section along their entire length. With regard to the design and arrangement of the profile carriers, it is preferred that the cross-section of the frame longitudinal sections perpendicular to the longitudinal direction of the panels is overlapped in a panel longitudinally oriented projection view at least in an edge region adjacent to the panel interior or completely from the frame transverse sections. As a result, the grid can be held captive in the longitudinal grooves. It is considered appropriate that the frame cross sections adjoin end faces of the frame longitudinal sections and welded to the longitudinal ends of the frame longitudinal sections or otherwise are fixed, for example, a screw is conceivable. With regard to the frame cross sections, it is preferred that they are cross-sectionally closed single- or multi-chamber hollow profile carriers. With regard to the frame longitudinal sections, it is preferred that they are profiled beams having a hollow profile section closed at the cross section, whose side walls are extended up to side wall edges with respect to the use position over a ceiling wall and with the ceiling wall an upwardly open U-profile Form profile, in the interior of a preferably extending in the panel longitudinal wooden slat for attachment, preferably for nailing, is fixed by formwork. The wooden slat can be shot in the recess of the frame longitudinal sections, for example. With nails. It is possible that the frame outer side wall forms at its upper edge in the preferred position of use the frame outer side edge of the upper side or the upper surface of the frame cross section or passes into it.

According to a further aspect, there is preferably the possibility that the frame-transverse side panel-side side wall of the frame cross-section extends with respect to the preferred position of use upper surface of the frame cross-section encloses an angle which is equal to or about 90 °. There is thus the possibility that the frame outer side wall is inclined in one direction, so that in the use position, the upper longitudinal edge of this side wall is further away from the panel interior than the lower longitudinal edge of this side wall. In other words, the length of the panel between the two outer frame side walls opposite the panel longitudinal edges can decrease from top to bottom in a position of use, in particular in the preferred position of use described by way of example, whereby the stripping or removal of panels can be simplified ,

There is also the possibility that the panel has at least one longitudinal intermediate carrier which extends parallel or inclined to the panel longitudinal direction and at its two longitudinal ends attached to one of the two frame cross sections, in particular welded, is, wherein the grid on the longitudinal intermediate carrier, in particular along its entire length, rests. According to this system, the grid clamped on two opposite inner sides of the frame, each in a longitudinal groove, is further stabilized. According to this, in particular central, support of the grid this can still withstand relatively higher transverse forces. In particular, there is the possibility that a longitudinal intermediate carrier, which extends, preferably in the center, between the two frame longitudinal sections, exerts on the two frame longitudinal sections positively held grid a transversely, preferably vertically, directed to the panel plane pressing force. In particular, the grille clamped to the opposing, undercut longitudinal grooves can thereby be given a certain prestress by this pressure or support force directed transversely to the panel plane, which can bring about a further stabilization. In the panel height direction perpendicular to the panel plane, the position of the longitudinal intermediate support may preferably be so be chosen that the cross struts of the grid according to the system of the grid on the longitudinal intermediate support curved or curved, so that the side facing away from the panel interior side of the transverse struts is convex. It is preferred that the frame longitudinal sections in each case a first, in particular (or in the preferred position of use) top side, in particular for supporting shuttering material and further in particular for releasable fixing of shuttering material, and a second, one in the panel longitudinal direction and to the panel transverse direction vertical panel height direction spaced, in particular (or in the preferred use position) underside surface, that the first surfaces of both longitudinal frame sections extend in a common first geometric reference plane and the second surfaces of both frame longitudinal sections in one of them common second geometric reference plane, wherein the frame longitudinal sections (with respect to their frame cross-section) are located completely between the first reference plane and the second reference plane. It is also preferred that in each case the longitudinal groove for the clamping of the grid is closer to the first reference plane than to the second reference plane at the frame longitudinal sections. In particular, in this context, there is the possibility that the position of the longitudinal intermediate support in the panel height direction is selected so that the grid, in particular its cross struts in the apex of its convex curvature, on the first reference plane side facing up to the first reference plane extends or extend beyond the first reference plane. In this respect, the apex of the convex curvature along the entire length of the grid (in panel longitudinal direction) can be just at the same height level as the upper sides of the longitudinal frame sections and thus a panel of formwork material (so-called formwork) placed on top of it in the preferred position of use of the panel. between the two frame longitudinal sections supported centrally from below. As a result of this embodiment can thus also the grid can be used to support the formwork joint. Alternatively or in combination, there is the possibility that the panel has one or more, preferably two, transverse intermediate carriers, each transverse intermediate carrier extending transversely, preferably perpendicularly, to the longitudinal intermediate carrier and fastened, in particular welded, to its two longitudinal ends on each of the two frame longitudinal sections , An expedient development provides that the longitudinal intermediate carrier bears against the transverse intermediate carrier or at the transverse intermediate carriers with respect to the panel height direction on its side facing away from the grid and / or is directly or indirectly connected thereto. In this embodiment, there is the possibility that the grid is supported on the longitudinal intermediate carrier, while the longitudinal intermediate carrier in turn is supported on one or more transverse intermediate carriers.

The invention further comprises a system slab formwork, comprising vertical supports, which carry on top a lockable thereto in at least two different height positions drop head, and comprising cross members which are supported on the drop heads, and panels, at its two opposite longitudinal ends of cross members and / or can be supported on drop heads in the vertical direction. Against the background of the prior art explained at the outset, the invention is therefore based on the object of advantageously developing such a system ceiling formwork.

The object is achieved according to the invention in conjunction with the features that the system ceiling formwork has one or more panels according to the invention according to one or more of claims 1 to 17. For possible developments, effects and advantages, reference is made to the preceding description. Such a system slab formwork can also be referred to as a slab formwork system. From the vertical supports and the cross beams, a support frame can first be constructed, to which the panels can subsequently be hung, preferably from below. Subsequently, the support frame in the area of the hinged panels committed at sufficiently small remaining distances between people and the formwork can be laid on top of it and fixed. As a carrier can out DE 10 2004 004 883 A1 known so-called. Main carrier and possibly additional so-called. Secondary carrier can be used. In the manner described in the publication, main carrier and, depending on the requirements, secondary carriers can be suspended with their longitudinal ends on drop heads or laterally on other main carriers. In a preferred embodiment, the dimensions of the cross member and the panels are tuned to the Absenkweg the drop heads that in a use state in which the drop heads are locked in the upper height position, the tops of the vertical supports, the cross member and the frame longitudinal sections of the panels in a common plane. Preferably, it is provided that cross beams have an upper side open receiving groove, in which a wooden slat for attachment, preferably for nailing, fixed by formwork, for example, shot down by means of nails, is. In a preferred state of use of the system slab formwork, it is provided that formwork panels are laid and fastened on a support structure supported by vertical supports and cross members supported on the support frame, the surface area of the individual formwork panels being larger, preferably one not necessarily integer multiples greater than the area of individual panels is. In this way, a concrete floor can be produced, at the lower visible surface formwork joints only in large or compared to the floor plan dimensions of the panels are larger distances. It is also preferred that a height of the frame longitudinal sections measured perpendicular to the panel plane the panel is equal to or greater than the Absenkweg (drop height) of the drop head from the upper to the lower lockable height position. In particular, it is preferred that the height of the frame longitudinal sections of the panels measured perpendicular to the panel plane corresponds, from the support surfaces to their upper side, to the height of the cross members from their support surfaces to their upper side.

The system ceiling formwork can in addition to panels according to the invention also one or more of DE 10 200 004 883 A1 comprise known slab formwork panels. As a result of the preferably identical dimensions in the plan view, compatibility with respect to the panel plane also advantageously results, which simplifies joint use. If required, the system slab formwork can also be supplemented by pass strips, as these are also presented in the cited patent application.

• Bereitstellen einer erfindungsgemäßen System-Deckenschalung, welche einzelne oder mehrere der zuvor beschriebenen Komponenten und Merkmale aufweist; Aufbau eines Traggerüsts (auch als Deckenschalungs-Gerüst bezeichnet) unter Verwendung von mehreren, mit je einem Fallkopf ausgestatteten Vertikalstützen und von mehreren Querträgern (Hauptträger und insbesondere Nebenträger), wobei zur vertikalen Abstützung Querträger an Fallköpfen und/ oder an anderen Querträgern eingehängt werden; Abstützung von einem oder mehreren der erfindungsgemäßen Paneele an dem Traggerüst, wobei die Paneele von einer unterhalb der Querträger befindlichen Position ausgehend zur vertikalen Abstützung an ihren beiden Längsenden an je einem Fallkopf oder an einem Querträger eingehängt werden, so dass sich die Paneel-Ebene, wenn sich die Fallköpfe in ihrer oberen Arretierposition befinden, parallel oder nur gering geneigt zu einer Horizontalebene erstreckt; Verlegen von Schalhauttafeln von oben auf den erfindungsgemäßen Paneelen; Fixieren der Schalhauttafeln auf erfindungsgemäßen Paneelen und/oder auf Querträgern insbesondere mittels Nägeln; Bereitstellung und Montage einer Stahl-Armierung für eine Stahlbetondecke; Vergießen von Beton auf die Schalhauttafeln und Einbettung der Armierung mit Beton; Nach einer Verfestigung des Betons Absenken der Fallköpfe in ihre untere Arretierposition, wodurch Querträger und erfindungsgemäße Paneele mit abgesenkt werden, wobei insbesondere ein Absenkweg der Fallköpfe von 100 mm gewählt wird, während benachbarte Vertikalstützen zur Abstützung der Betondecke zumindest zunächst stehen bleiben, anschließendes Anheben eines erfindungsgemäßen Paneels an seiner einen Längsseite um etwa den Absenkweg, bis es von unten an die Schalhaut anstößt, anschließendes seitliches Verschieben des Paneels in den Freiraum zwischen der Schalhaut und dem Querträger, insbesondere bis an das Rohr des Fallkopfes heran; Lösen des Eingriffselementes oder der Eingriffselemente an dem anderen bzw. gegenüberliegenden Längsende des erfindungsgemäßen Paneels von dem dortigen Fallkopf oder Querträger; Herabschwenken des besagten anderen bzw. gegenüberliegenden Längsendes des Paneels und Entnahme des Paneels nach unten.

  Fig. 1

  perspektivisch ein erfindungsgemäßes Paneel gemäß einem bevorzugten Ausführungsbeispiel;

  Fig. 2

  perspektivisch das Paneel gemäß Fig. 1 in einer anderen Betrachtungsrichtung;

  Fig. 3

  eine Seitenansicht des Paneels in Blickrichtung III gemäß Fig. 1;

  Fig. 4

  eine Ausschnittsvergrößerung zu Detail IV aus Fig. 3;

  Fig. 5

  eine Draufsicht auf das Paneel in Blickrichtung V gemäß Fig. 3;

  Fig. 6

  eine Schnittansicht entlang Schnittebene VI - VI aus Fig. 5;

  Fig. 7

  eine Ausschnittsvergrößerung von Detail VII aus Fig. 6;

  Fig. 8

  perspektivisch ein Vorratsgestell gemäß einem bevorzugten Ausführungsbeispiel mit darin aufgenommenen erfindungsgemäßen Paneelen gemäß den Fig. 1 - 7;

  Fig. 9

  eine Draufsicht in Blickrichtung IX aus Fig. 8;

  Fig. 10

  perspektivisch das Vorratsgestell ohne Paneele;

  Fig. 11

  perspektivisch einen bevorzugten Gebrauchszustand einer erfindungsgemäßen System-Deckenschalung mit erfindungsgemäßen Paneelen, jeweils gemäß einem bevorzugten Ausführungsbeispiel;

  Fig. 12

  einen nachfolgenden bevorzugten Gebrauchszustand der erfindungsgemäßen System-Deckenschalung mit den erfindungsgemäßen Paneelen gemäß einem bevorzugten Ausführungsbeispiel;

  Fig. 12a

  eine Draufsicht auf Detail XIIa in Fig. 12 in der angegebenen Blickrichtung,

  Fig. 13

  einen Teilschnitt entlang Schnittlinie XIII - XIII aus Fig. 12;

  Fig. 14

  einen Teilschnitt entlang Schnittlinie XIV - XIV aus Fig. 12, jedoch in einem nachfolgenden bevorzugten Gebrauchszustand, bei dem oberhalb der Schalhaut eine Stahlbetondecke hergestellt wurde;

  Fig. 15

  einen nachfolgenden bevorzugten Gebrauchszustand mit abgesenkten Fallköpfen; wobei dahinter liegende System-Komponenten zur Verbesserung der Übersicht nicht dargestellt sind;

  Fig. 16

  einen nachfolgenden Gebrauchszustand, bei dem das Paneel an seinem einen Längsende angehoben wurde;

  Fig. 17

  einen nachfolgenden Gebrauchszustand, bei dem das Paneel an dem zunächst angehobenen Längsende seitlich in den Zwischenraum zwischen Fallkopf und Schalhaut eingeschoben und auch an dem anderen Längsende von dem dortigen Querträger gelöst wurde;

  Fig. 18

  einen nachfolgenden bevorzugten Gebrauchszustand, bei welchem das Paneel mit dem unteren Längsende voran nach unten von der Schalhaut abgeschwenkt und entnommen wird;

  Fig. 19

  perspektivisch ein erfindungsgemäßes Paneel gemäß einem weiteren bevorzugten Ausführungsbeispiel;

  Fig. 20

  eine Draufsicht auf das in Fig. 19 gezeigte Paneel in dortiger Blickrichtung XX;

  Fig. 21

  das in Fig. 20 gezeigte Paneel in einem demgegenüber vergrößerten Teilschnitt entlang der Schnittlinie XXI - XXI und

  Fig. 22

  das in Fig. 20 gezeigte Paneel in einer demgegenüber vergrößerten Schnittansicht entlang der dortigen Schnittlinie XXII - XXII.

Also described here is a method or a use of the panel according to the invention and the system slab formwork according to the invention. The method may in particular comprise one or more of the following method steps:

• Providing a system slab formwork according to the invention comprising one or more of the components and features described above; Structure of a supporting framework (also referred to as a slab formwork scaffold) using a plurality of vertical supports equipped with a drop head and of a plurality of cross members (main beam and in particular secondary beam), wherein for vertical support cross beams are attached to drop heads and / or other cross beams; Support of one or more of the panels according to the invention on the support frame, wherein the panels are suspended from a located below the cross member position for vertical support at both longitudinal ends of each drop head or on a cross member, so that the panel level when the drop heads are in their upper locking position, extending parallel or only slightly inclined to a horizontal plane; Laying formwork panels from above on the panels according to the invention; Fixing the formwork panels on panels according to the invention and / or on cross members, in particular by means of nails; Provision and installation of a steel reinforcement for a reinforced concrete floor; Casting concrete on the formwork panels and embedding the reinforcement with concrete; After solidification of the concrete lowering the drop heads in their lower locking position, which cross beams and panels according to the invention are lowered, in particular a Absenkweg the drop heads of 100 mm is selected, while adjacent vertical supports for supporting the concrete cover at least initially remain, then lifting a invention Panel on its one longitudinal side to about the Absenkweg until it abuts the formwork from below, then lateral displacement of the panel in the space between the formwork skin and the cross member, in particular up to the tube of the drop head zoom; Releasing the engagement element or the engagement elements at the other or opposite longitudinal end of the panel according to the invention from the drop head or cross member there; Swiveling down said other or opposite longitudinal end of the panel and removing the panel down.

  Fig. 1

  in perspective, an inventive panel according to a preferred embodiment;

  Fig. 2

  in perspective the panel according to Fig. 1 in another viewing direction;

  Fig. 3

  a side view of the panel in the direction of III according to Fig. 1 ;

  Fig. 4

  a detail enlargement to detail IV from Fig. 3 ;

  Fig. 5

  a plan view of the panel in the direction V according to Fig. 3 ;

  Fig. 6

  a sectional view along sectional plane VI - VI off Fig. 5 ;

  Fig. 7

  an enlarged detail of detail VII Fig. 6 ;

  Fig. 8

  perspective view of a storage rack according to a preferred embodiment with therein received panels according to the invention Fig. 1-7 ;

  Fig. 9

  a plan view in the direction of IX Fig. 8 ;

  Fig. 10

  in perspective, the storage rack without panels;

  Fig. 11

  in perspective, a preferred state of use of a system-slab formwork according to the invention with panels according to the invention, each according to a preferred embodiment;

  Fig. 12

  a subsequent preferred state of use of the system-slab formwork according to the invention with the panels according to the invention according to a preferred embodiment;

  Fig. 12a

  a top view on detail XIIa in Fig. 12 in the specified direction,

  Fig. 13

  a partial section along section line XIII - XIII from Fig. 12 ;

  Fig. 14

  a partial section along section line XIV - XIV Fig. 12 but in a subsequent preferred state of use in which a reinforced concrete ceiling was made above the formwork;

  Fig. 15

  a subsequent preferred state of use with lowered drop heads; where underlying system components to improve the overview are not shown;

  Fig. 16

  a subsequent use state in which the panel has been raised at its one longitudinal end;

  Fig. 17

  a subsequent use state in which the panel is inserted laterally at the initially raised longitudinal end into the intermediate space between falling head and formwork skin and also at the other longitudinal end of the local cross member;

  Fig. 18

  a subsequent preferred state of use in which the panel is pivoted with the lower longitudinal end downwards from the formwork skin and removed;

  Fig. 19

  in perspective, an inventive panel according to another preferred embodiment;

  Fig. 20

  a top view of the in Fig. 19 shown panel in local line XX;

  Fig. 21

  this in Fig. 20 shown in a contrast enlarged partial section along the section line XXI - XXI and

  Fig. 22

  this in Fig. 20 shown in an enlarged contrast sectional view along the section line XXII - XXII.

With reference to the FIGS. 1 to 7 First, an inventive panel 1 is presented according to a first preferred embodiment. The panel 1 is for a system ceiling formwork 2 (see FIGS. 11 to 18 ), or corresponding panels 1 can form components of such a system slab formwork 2. The panel 1 comprises a frame 3, which in the example has a rectangular layout. The frame 3 comprises two mutually parallel and parallel to a panel longitudinal direction L extending frame longitudinal sections 4 and two mutually parallel spaced and parallel to a panel transverse direction Q extending frame cross sections 5. The panel transverse direction Q extends perpendicular to the panel Longitudinal direction L and clamped together with her a so-called. Panel level as a geometric or imaginary reference plane. The panel plane is indicated by dashed lines in the figures and designated by the reference symbol E. With regard to the panel longitudinal direction L, the frame longitudinal sections 4 are arranged between the two frame cross sections 5. For this purpose, a frame cross section 5 is set against each pair of mutually aligned end faces of the frame longitudinal sections 4. In the four frame corners thus formed, the frame longitudinal sections 4 are welded to the frame cross sections 5 in a manner not shown in the figures. In the example, two transverse supports 6 each extending in the transverse direction Q of the panel are additionally inserted between the frame longitudinal sections 4 and welded thereto for stabilization. The transverse supports 6 thus extend through the panel interior 11, which is bounded by the frame 3. The panel 1 extends in the longitudinal direction between its two longitudinal ends 7, its dimensions in the example in the panel longitudinal direction being 1.7 meters and in the panel transverse direction 0.45 meters. It is understood that deviating dimensions are possible.

In the foregoing and following features of the panel 1 will be described in relation to a preferred position of use, so far, for example, to be able to assign the terms top side and bottom side. This preferred position of use of the panels 1 is, for example. In FIG. 3 and in the Figures 11 . 12 shown, wherein the plane defined by the panel longitudinal direction with the panel transverse direction geometric, ie imaginary panel plane parallel to a horizontal plane in the Figures 11 . 12 also parallel to a horizontal footprint of a support frame 17 extends.

The FIGS. 1 to 7 It can be seen that each frame cross section 5 integrally formed at its associated longitudinal end 7 a strip-shaped engagement element 8, which is adjacent to a lower in the use position support surface 9 of the frame cross section 5 with respect to the panel level E almost vertically down to a free Longitudinal edge 10 extends. How special FIG. 4 illustrated, extending in the said preferred position of use of the panel 1 on the frame cross section 5 of the two at its top 12 and 15 parallel to the panel transverse direction Q extending edges 13,14 of the frame outer side edge 14 below the frame inside edge 13. Die Specification below means that the edge 14 extends deeper than the edge 13 with respect to a panel height direction H perpendicular to the panel plane E in said operating position of the panel 1. The edges 13 and 14 extend parallel to each other. This embodiment is provided at both frame cross sections 5, wherein, as FIG. 3 illustrated with respect to one of the panel transverse direction Q and the panel height direction H spanned geometric center plane M is given a center-symmetrical configuration. In the example, each frame cross section 5 each has a respect to the preferred position of use of the panel 1 frame top, in-plan surface 15, which extends from its inner frame edge 13 to its frame outer edge 14 continuously linearly sloping. Especially FIG. 4 illustrates that the frame cross sections 5 to the frame longitudinal sections 4 frame top and frame underside flush, ie, without offset in panel height direction H, adjacent.

In the selected embodiment, the panel 1, a grid 16, which is intended as a wire-made and galvanized in the example protective grid to prevent the falling of persons and objects of a covered with panels 1 according to the invention support frame system slab formwork 2. The grille 16 in this example extends in the entire cross-section of the panel interior 11 parallel to the panel plane E. It comprises a plurality of panel struts longitudinally L extending parallel to one another and a plurality of parallel to the panel -Querrichtung Q extending, mutually parallel spaced transverse struts 18. As particularly in connection with the FIGS. 6, 7 becomes clear, it is provided that on the respective inside frame side wall 19 of the two frame longitudinal sections 4 in the preferred position of use upper side wall edge 20 extending in the panel longitudinal direction L, to the panel interior 11 side or laterally in the panel transverse direction Q open, in its cross section undercut longitudinal groove 21 is formed. The grid 16 is mounted or arranged in such a way that its transverse struts 18 each engage with its two ends 22 in one of the two longitudinal grooves 21, so that in the respective undercut hollow section area 23 both longitudinal grooves 21 each one of the two edge-side longitudinal struts 17 of the grid 16 laterally or in the panel transverse direction Q positively behind the undercut causing, parallel spaced to the side wall 19 oriented undercut wall 58 is held.

The FIGS. 3, 4 and 6, 7 make it clear that the two frame longitudinal sections 4 are each one, so a total of two mutually cross-sectional profile carrier 4 'and the two frame cross sections 5 by one, so a total of two cross-section different, but again cross-sectional profile carrier 5' is. FIG. 2 3, it can be seen that the cross-section of the frame longitudinal sections 4, which is perpendicular to the longitudinal direction of the panel L, is almost completely overlapped by the frame cross-sections 5 in a projection view oriented in the longitudinal direction of the panel L. Each frame cross section 5 is formed by a closed hollow profile carrier 5 ', which in the example is a multi-chamber hollow profile carrier. FIG. 4 shows that the profile carrier 5 'has a surface 15 forming upper side wall 24, a bottom wall 25, a frame inside side wall 26 and a frame outer side wall 27. The top wall 24 closes in the plane defined by the panel longitudinal direction L and the panel height direction H, in FIG FIG. 4 shown cross-sectional plane with the panel plane E or with a horizontal plane an acute angle α a, which in the example is about 7 °. The underside wall 25 extends parallel to the panel plane E. Thus, in the panel longitudinal direction L towards the longitudinal end 7, a linearly decreasing overall height of the hollow profile 5 'results. The frame inside side wall 26 extends perpendicular to the panel plane E. The frame outside side wall 27 includes with the top wall 24 an angle β, which in the example is about 93 °. It follows that the side wall 27 with the panel height direction H encloses an angle γ, which in the example about 4 ° is such that the upper edge 28 of the side wall 27 measured parallel to the panel plane E has a greater distance from the side wall 26 than the lower free longitudinal edge 10 which is formed on the rectilinear extension of the side wall 27 extending engagement element 8. It is understood that the selected angles are exemplary. Between the lower-side wall 25 and the upper-side wall 24, three diagonal walls 29 extend in a zigzag-shaped manner in the cross section, so that four hollow chambers 30 are formed.

In the example, each frame cross section 5 each comprises an engagement element 8 which extends in the panel transverse direction Q along the entire length of the frame cross section 5. As already mentioned, the engagement element 8 is an integral part of the frame outer side, extending in the panel-transverse direction Q side wall 27. The strip-shaped engaging element 8 edges laterally in a panel transverse direction Q extending, in the preferred position of use of the panel 1 downwardly open transverse groove 31 whose Slot bottom 32 forms a bottom support surface 33 for supporting the panel 1 on a slab formwork scaffolding. The transverse groove 31 is thus bounded by an angled portion of the wall 25 and by the wall 27 and the engagement member 8.

In the described embodiment, the respective support surface 9 of an imaginary grid surface, which is spanned by the grid 16, spaced in the panel height direction H and directed away from the grid surface, and the respective engagement member 8 extends (see. Fig. 4 ) in its cross section perpendicular to the panel transverse direction Q at an acute angle inclined to the panel height direction H (alternatively, an extension parallel to the panel height direction H would be possible) and from the grid surface along which the mesh 16 extends , directed away to its free longitudinal end 10. This means that when the panel 1 is viewed in a position in which the grid 16 is held in the region of the upper sidewall edge of frame longitudinal sections 4 and / or frame cross sections 5, the support surfaces 9 are located on the frame cross section 5 on the underside and the engagement elements 8 extend downwards. In the described embodiment, the respective engagement element 8 thus also extends from the surface 15 of the frame cross-section 5, which forms an acute angle with the panel plane 8, directed away from its free longitudinal end. Along the wall 25 which is parallel to the panel plane E, the underside of the frame cross section 5 also extends parallel to the panel plane E. The engagement element 8 laterally borders a transverse groove 31 extending in the panel transverse direction. On the side opposite the engagement element 8 the transverse groove 31 bounded by an angled portion of the wall 25.

The frame longitudinal sections 4 are each a profile support 4 ', which has a hollow profile section closed in cross-section 34, the side walls 19, 35 with respect to the preferred position of use of the panel 1 over a top wall 36 also integrally up to side wall edges 20, 37 are extended. In this upper region, the side walls 19, 35 with the top wall 36 in the preferred position of use upwardly open U-profile profile 38 which is integrally connected to the hollow profile section 34 and in its open from above the interior 39 a in the longitudinal direction panel L extending wooden bar 40 for nailing of formwork skin (see. FIG. 12 ) is firmly recorded.

In the FIGS. 8 to 10 a storage rack 41 is shown, which is suitable for space-saving storage of a plurality of panels 1 according to the invention. It includes four corner posts 42, which are a ground-level horizontal frame 43 carry and have in the region of their upper longitudinal ends hooks 44 for the attack of lifting means.

With reference to the FIGS. 11 to 18 a system slab formwork 2 according to the invention is described according to a preferred embodiment with reference to various preferred conditions of use, which arise during a preferred method for use. FIG. 11 shows a built in the example of nine vertical supports 45 and twelve cross members 46 support frame 47, which is placed on a flat footprint and on which for the production of a slab already individual panel 1 according to the invention, which in the example previously described with reference to the FIGS. 1 to 7 correspond to panels 1 described are hung. Each vertical support 45 carries at its upper longitudinal end a so-called drop head 48, which is slidably received in the vertical direction on the vertical support and releasably arrestable in two different height positions whose distance is referred to as the lowering travel or the drop height. The vertical supports 45 with their drop heads 48 and selected in the example as a cross member 46 so-called. Main carrier are constructive and in their operation DE 10 2004 004 883 A1 known, so that reference is made to avoid repetition on the local description and the local disclosure is fully incorporated in the present application. The cross member 46 have at their two longitudinal ends in the position of use each lower side groove 49, which can be hooked on one of the four per drop head provided, hooking in use position upwardly Einhakstegen 50 for vertical support (see. FIG. 12a ). Each drop head 48 has four hooking webs 50 oriented in orthogonal directions, so that a maximum of four cross beams 46 can be connected to them in a star shape. Each cross member 46 has on both longitudinal sides each extending in its longitudinal direction upwardly pointing Einhakrippe 51, along the further cross member 46 and / or panels 2 by means of the underside thereof Transverse grooves 31 or by means of their engagement elements 8 and support surfaces 33 can be suspended for vertical support. At the in FIG. 11 shown support frame 47 comprises the first formed from the drop heads 48 and cross members 46 upper support grid four quadrants on which cross member 46 at a distance of more than 0.3 meters opposite, so that the support grid before hanging panels 1 for laying formwork panels not be committed by persons. In order to create a walkable substructure for the formwork panels, FIG. 11 already mounted on one of the four quadrants three panels 1 according to the invention at its two longitudinal ends 7 on opposite cross members 46, so that their panel plane E extends parallel to the footprint of the support frame 47. The mesh size of the grid 46 and the spacing between adjacent panels 1 is in each case selected to be smaller than the maximum permissible intermediate distance of 0.3 meters for accessibility. FIG. 12 shows a later state of use, in which all quadrants of the framework 47 have been filled in a corresponding manner with panels 1, so that the construction formed may now be committed in compliance with the occupational safety regulations of persons for the laying of formwork panels 52. As indicated, the formwork panels 52 can be fixed by means of nails 53 on wooden slats 40 in the frame longitudinal sections 4 and on wooden slats 54 in the cross members 46. In FIG. 12 All fall heads 48 are in their upper of the two possible height positions. In this case, the upper sides of the vertical supports 45, the cross member 46 and the frame longitudinal sections 4 of the panels 1 extend in a common plane, so that they can wear the formwork panels 52 together.

This is also from FIG. 14 illustrates, where there is already a concrete cover 55, which may have a (not shown in the figures) armor was made on the formwork panels 52. Based on this at the in FIG. 15 shown subsequent use state lowered all the drop heads 48 from its upper to its lower lockable altitude, the designated A lowering path in the example is 100 mm. The top surface 56 of the vertical supports 45 maintains its height and continues to support the formwork panels 52. FIG. 15 also shows that the height X of the frame longitudinal sections 4 of the panels 1 in the example is about the same as the Absenkweg A of the drop head 48. With Y is the slightly lower height, measured from the support surfaces 9 of the frame cross sections 5 to the top 57 of the frame longitudinal sections 4, respectively. In the example, this height Y corresponds to the height measured at the cross members 46 analogously from the local support surfaces in the grooves 49 to the top of the cross member 46.

The FIGS. 15 to 18 show a preferred procedure by means of which the panels 1 can be removed from an operator standing between the vertical supports 45 for stripping down. In FIG. 16 For this purpose, the panel 1 at its one (left in the direction of view) longitudinal end 7 was raised to contact with the formwork panel 52, wherein the engagement member 8 was released at the opposite longitudinal end 7 by slightly lifting just out of engagement behind the Einhakrippe 51. FIG. 17 shows that the panel 1 with its comparatively higher longitudinal end 7 in this orientation, although its height in the region of the frame longitudinal sections 4 corresponds to the Absenkweg of the drop head, due to its flattened longitudinal ends laterally in the space between the cross member 46 and the formwork panel 52 can be moved 52 until this longitudinal end 7 abuts the tube of the drop head 48. This makes it possible, the equipped with the grid panel (also referred to as "mesh panel") also move out of the opposite support and leave there unilaterally for removal or pivot down, as in FIG. 18 is shown.

With reference to the FIGS. 19 to 22 an inventive panel 1 is presented according to a further preferred embodiment. Here, the design and arrangement of the frame longitudinal sections 4 and the frame cross sections 5 corresponds to the reference to the FIGS. 1 ff described embodiment. The two frame longitudinal sections 4 each have a first surface 59 for support and releasable fixation of (not with Pictured) formwork material, such as. Shuttering panels. At the diametrically opposite cross-sectional side, each frame longitudinal section 4 has a second surface 60, which is thus spaced from the first surface 59 in the panel height direction H. The two said first surfaces 59 of the frame longitudinal sections 4 extend in an imaginary first geometric reference plane B ₁ common to them, and the two mentioned second surfaces 60 of the two longitudinal frame sections 4 extend in an imaginary second geometric reference plane B ₂ common to them. In particular FIG. 22 clarifies, extend the frame longitudinal sections 4 and the frame cross sections 5 total, ie with their cross-sections completely, between the two reference planes B ₁ and B _second At each frame transverse section 5, an engagement element 8 is integrally formed at the respective longitudinal end 7 of the frame 3, which is adjacent to a support surface 9 of the frame cross section 5 in its cross section perpendicular to the panel plane E to its free longitudinal end 10 'in the direction of the second Reference plane B ₂ extends. The two frame longitudinal sections 4 are in turn arranged with respect to the panel longitudinal direction L between the two frame cross sections 5. At each of the two frame transverse sections 5, the frame outer side edge 61 of which is at the first reference plane B ₁ facing surface 61 in the direction of the second reference plane B ₂ spaced from the first reference plane B ₁ , wherein the distance is designated by a. On the other hand, the frame inner side edge 62 of the surface 15 extends in the example in the first reference plane B ₁ . The extending between the edges 61 and 62 Surface 15 is flat. The surface 63 of the frame cross members 5, which adjoins the second surface 60 of the frame longitudinal sections 4, extends parallel to the panel plane E. When viewed in the panel longitudinal direction L, a frame edge 61 results from the frame inner side edge 62 to the frame outer side edge 61 decreasing height, based on the panel height direction H. In the FIGS. 19 to 22 the panel 1 is in a preferred position of use chosen as an example for the description, in which the panel plane E oriented parallel to the reference planes B ₁ and B ₂ extends parallel to a horizontal plane, the surfaces 15 and 59 pointing upwards and wherein the support surfaces 9 are directed downward. In this preferred position of use, the panel by means of its support surfaces 9 from above eg. On vertical supports and / or hinged cross members of a system-slab formwork are supported and to form a shuttering on its underside horizontal concrete floor formwork material (so-called formwork) deposited on the surface 59 and in particular to be fixed on it.

Deviating from the first embodiment shown, the in the FIGS. 19 to 22 Panel 1 shown a longitudinal intermediate member 64 which extends parallel to the panel longitudinal direction L and at its two longitudinal ends 65 to each one of the two frame cross sections 5 (in a manner not shown in the figures) is welded and to which the grid 16 rests continuously between the two frame cross sections 5. FIG. 22 shows that the longitudinal intermediate support 64 is a pipe section with an oval cross-section. With regard to the panel transverse direction Q, the longitudinal intermediate carrier 64 is arranged centrally between the two frame longitudinal sections 4. In the panel height direction H, the position of the longitudinal intermediate support 64 is selected so that it bears against the central longitudinal strut 17 of the grille 16 and thereby exerts a slight compressive force on the grille 16. according to this system or transmitted compressive force, the otherwise or without this force rectilinear transverse struts 18 of the grating 16 are slightly bent, whereby the cross struts 18 in the example along its entire length between the two longitudinal grooves 21 in the longitudinal grooves 22 are curved or curved. In FIG. 22 is denoted by 66 the so-called. Main extension direction of the transverse struts 18, which is predetermined for each cross member by an imaginary straight connecting line between the two longitudinal ends 22 of the cross member 18. The main extension direction 66 runs parallel to the panel transverse direction Q, as in the first embodiment. However, FIG FIG. 22 differing from the first embodiment, that the transverse struts 18 between the two longitudinal ends 22 not straight, but curved and thus extend in their course slightly different from the imaginary straight connecting line between the longitudinal ends 22. According to the transverse force transmitted by the longitudinal intermediate support 64, the transverse struts 18 are convexly curved on the side facing away from the longitudinal intermediate support 64. FIG. 22 also shows that at the frame longitudinal sections 4, the respective longitudinal groove 21 in panel height direction H is closer to the first reference plane B ₁ than at the second reference plane B ₂ and that the grid 16 and its crossbars 18 in the apex 67 of the convex curvature on the first reference plane B ₁ side facing up to the first reference plane B ₁ extends or extend without protruding above the reference level _B1. According to this embodiment, the grid 16 for supporting a (in the FIGS. 19 to 22 not shown with) formwork joint impact. Furthermore, it is provided that the panel 1 has two transverse intermediate support 68. These are also each a pipe section with an oval pipe cross-section. Each transverse intermediate support 68 extends perpendicular to the longitudinal intermediate support 64 and is welded at its two longitudinal ends 69 to one of the two frame longitudinal sections in a manner not shown in more detail in the figures. The longitudinal intermediate support 64 is supported with respect to the panel height direction H on its side facing away from the grid 16 on the two transverse intermediate carriers 68 from.

The frame cross sections 5 each have one to the one panel side facing first page 70, each with a frame outside edge 71 and a frame inside edge 72. Insofar is ever a frame inside edge 72 on each of the frame cross sections 5. The two frame inside edges 72 in turn span the geometric already mentioned first reference plane B ₁ . Furthermore, the two frame transverse sections 5 each have a second side 73 facing the other or the opposite panel side, each having a frame outside edge 74 and a frame inside edge 75. In the example, the two frame inside edges 75, one each at each one of the frame cross sections 5, together also the already mentioned reference plane B ₂ . This reference plane is also spanned by the two frame outer edges 74, one of which is located on each one of the two frame cross sections 5. Out FIG. 21 It is clear that at each of the two frame cross sections 5, the frame outer side edge 71 of the first side 70 is spaced in the direction of the second reference plane B ₂ from the first reference plane B ₁ , said distance measured in the panel height direction H is designated by a.

Claims (21)

1. Panel (1) for a system ceiling formwork (2), the panel (1) comprising a frame (3) which frames a panel inner space (11), has two longitudinal frame portions (4) which extend in parallel with a longitudinal direction (L) of the panel and has two transverse frame portions (5) which are connected to the longitudinal frame portions (4) and extend in parallel with a transverse direction (Q) of the panel, which direction is oriented perpendicularly to the longitudinal direction (L) of the panel, the panel (1) comprising a lattice (16), in particular a protective wire grating, which has longitudinal braces (17) which extend in parallel with the longitudinal direction (L) of the panel and transverse braces (18) which are connected thereto, are in parallel with or inclined with respect to the transverse direction (Q) of the panel or transverse braces (18) which are connected to the longitudinal braces (17) and extend in a curved manner in a main extension direction, which is oriented in parallel with or in an inclined manner with respect to the transverse direction (Q) of the panel, in particular along the entire length thereof or in at least one longitudinal portion and/or extend in an inclined manner with respect to the main extension direction, in particular in one or more longitudinal portions, characterised in that the frame (3) has, at its two longitudinal ends (7) or in the region of its two longitudinal ends (7), in each case at least one engagement element (8) which is formed in one piece from one of the transverse frame portions (5) in each case, extends in the transverse direction (Q) of the panel and extends, in particular downwards, in a manner adjacent to each lower bracing surface (9) of the frame (3), in its cross section, perpendicularly to or obliquely with respect to a geometric panel plane (E) which is spanned by the longitudinal direction (L) of the panel and the transverse direction (Q) of the panel, in that the engagement element (8) is an integral component of a side wall (27) of the transverse frame portion (5), which wall extends in the transverse direction (Q) of the panel and is on the outside of the frame and laterally borders a transverse groove (31) which is open at the bottom and extends in the transverse direction (Q) of the panel, the groove base (32) of which groove forms the lower bracing surface (9, 33) for bracing the panel (1) on a ceiling formwork, and in that, on the side wall (19) of the two longitudinal frame portions (4) which is on the inside of the frame in each case, a longitudinal groove (21) is formed which is undercut in its cross section, is open towards the panel inner space (11) and extends in the longitudinal direction (L) of the panel, in that a longitudinal brace (17) extends along each of the two longitudinal lattice borders, and in that the transverse braces (18), by the two ends (22) thereof, each engage in one of the two longitudinal grooves (21) so that each one of the two border-side longitudinal braces (17) of the lattice (16) is laterally retained in an interlocking manner in the relevant undercut hollow cross-sectional region (23) of the two longitudinal grooves (21).
2. Panel (1) for a system ceiling formwork (2), the panel (1) comprising a frame (3) which frames a panel inner space (11), has two longitudinal frame portions (4) which extend in parallel with a longitudinal direction (L) of the panel and has two transverse frame portions (5) which are connected to the longitudinal frame portions (4) and extend in parallel with a transverse direction (Q) of the panel, which direction is oriented perpendicularly to the longitudinal direction (L) of the panel, the panel (1) comprising a lattice (16), in particular a protective wire grating, which has transverse braces (18) which extend in parallel with the transverse direction (Q) of the panel and longitudinal braces (17) which are connected thereto, are in parallel with or inclined with respect to the longitudinal direction (L) of the panel or longitudinal braces (17) which are connected to the transverse braces (18) and extend in a curved manner in a main extension direction, which is oriented in parallel with or in an inclined manner with respect to the longitudinal direction (L) of the panel, in particular along the entire length thereof or in at least one longitudinal portion and/or extend in an inclined manner with respect to the main extension direction, in particular in one or more longitudinal portions, characterised in that the frame (3) has, at its two longitudinal ends (7) or in the region of its two longitudinal ends (7), in each case at least one engagement element (8) which is formed in one piece from one of the transverse frame portions (5) in each case, extends in the transverse direction (Q) of the panel and extends, in particular downwards, in a manner adjacent to each lower bracing surface (9) of the frame (3), in its cross section, perpendicularly to or obliquely with respect to a geometric panel plane (E) which is spanned by the longitudinal direction (L) of the panel and the transverse direction (Q) of the panel, in that the engagement element (8) is an integral component of a side wall (27) of the transverse frame portion (5), which wall extends in the transverse direction (Q) of the panel and is on the outside of the frame and laterally borders a transverse groove (31) which is open at the bottom and extends in the transverse direction (Q) of the panel, the groove base (32) of which groove forms the lower bracing surface (9, 33) for bracing the panel (1) on a ceiling formwork, and in that, on the side wall of the two transverse frame portions (5) which is on the inside of the frame in each case, a transverse groove is formed which is undercut in its cross section, is open towards the panel inner space (11) and extends in the transverse direction (Q) of the panel, in that a transverse brace (18) extends along each of the two transverse lattice borders, and in that the longitudinal braces (17), by the two ends thereof, each engage in one of the two transverse grooves so that each one of the two border-side transverse braces (18) of the lattice (16) is laterally retained in an interlocking manner in the relevant undercut hollow cross-sectional region of the two transverse grooves.
3. Panel (1) according to one or both of the preceding claims, characterised in that the lattice (16) is retained, in the transverse direction (Q) of the panel, in an interlocking manner in longitudinal grooves (21) of the two longitudinal frame portions (4) and adjoins the two transverse frame portions (5), the longitudinal frame portions (4) being arranged between the transverse frame portions (5) in the longitudinal direction (L) of the panel.
4. Panel (1) according to one or more of the preceding claims, characterised in that, on each of the two transverse frame portions (5), from their two borders (13, 14) which extend in parallel with the transverse direction (Q) of the panel on the upper side (12), the border (14) on the outside of the frame extends so as to lie lower than the border (13) on the inside of the frame, it being provided in particular that the transverse frame portions (5) each have a surface (15) which is on the upper side of the frame, in particular is planar, and extends from the border (13) thereof on the inside of the frame to the border (14) thereof on the outside of the frame in a sloping manner.
5. Panel (1) according to one or more of the preceding claims, characterised in that the two longitudinal frame portions (4) are two beams (4') which are identical to one another in cross section and are extruded in particular from aluminium or from an aluminium alloy, and the two transverse frame portions (5) are two beams (5') which are different in cross section from the longitudinal frame portions but are identical to one another in cross section and are extruded in particular from aluminium or from an aluminium alloy.
6. Panel (1) according to one or more of the preceding claims, characterised in that the cross section of the longitudinal frame portions (4) which is perpendicular to the longitudinal direction (L) of the panel is overlapped by the transverse frame portions (5) completely or at least in a border region which adjoins the panel inner space, in a projected view which is oriented in the longitudinal direction (L) of the panel.
7. Panel (1) according to one or more of the preceding claims, characterised in that the transverse frame portions (5) adjoin end faces of the longitudinal frame portions (4) and are welded to the longitudinal ends of the longitudinal frame portions (4).
8. Panel (1) according to one or more of the preceding claims, characterised in that the transverse frame portions (5) are hollow beams (5') having a closed cross section, in particular multi-chamber hollow beams.
9. Panel (1) according to one or more of the preceding claims, characterised in that each transverse frame portion (5) has at least one engagement element (8) which extends in along the entire length of the transverse frame portion (5) in the transverse direction (Q) of the panel.
10. Panel (1) according to one or more of the preceding claims, characterised in that the side wall (27) of the transverse frame portion (5), which wall is on the outside of the frame and extends in the transverse direction (Q) of the panel, encloses an angle β with the upper surface (15) of the transverse frame portion (5) which is approximately 90° or equal thereto.
11. Panel (1) according to one or more of the preceding claims, characterised in that the longitudinal frame portions (4) are beams (4') which have a hollow profiled portion (34) having a closed cross section, the side walls (19, 35) of which are extended upwards across a covering wall (36) as far as side-wall borders (20, 37) and form, together with the covering wall (36), a U-shaped profile (38) which is open at the top, in the inner space (39) of which, in particular, a wooden slat (40) which extends in the longitudinal direction (L) of the panel and is intended for fastening, in particular for nailing, the formwork shell is fixed thereto.
12. Panel (1) according to one or more of the preceding claims, characterised in that the panel (1) has at least one longitudinal intermediate beam (64) which extends in parallel with or in an inclined manner with respect to the longitudinal direction (L) of the panel and is fastened, in particular welded, at the two longitudinal ends (65) thereof, to one of the two transverse frame portions (5) in each case, the lattice (16) adjoining the longitudinal intermediate beam (64), in particular along the entire length thereof.
13. Panel (1) according to one or more of the preceding claims, characterised in that a longitudinal intermediate beam (64) which extends, in particular centrally, between the two longitudinal frame portions (4) applies a compressive force, which is directed transversely, in particular perpendicularly, to the panel plane (E), to the lattice (16), which is retained in an interlocking manner on the two longitudinal frame portions (4).
14. Panel (1) according to one or both of the preceding claims 12 and 13, characterised in that the transverse braces (18) of the lattice (16), as a result of the lattice (16) resting on the longitudinal intermediate beam (64), extend in a curved manner, and therefore the side of the transverse braces which faces away from the panel inner space is curved in a convex manner.
15. Panel (1) according to one or more of the preceding claims, characterised in that the longitudinal frame portions (4) each have a first, in particular upper-side, surface (59), particularly for placing formwork material and more particularly for detachably fixing formwork material, and a second, in particular lower-side, surface (60) which is at a spacing from the first surface in a vertical direction (H) of the panel which is perpendicular to the longitudinal direction (L) of the panel and to the transverse direction (Q) of the panel, in that the first surfaces (59) of the two longitudinal frame portions (4) extend in a common first geometric reference plane (B₁) and the second surfaces (60) of the two longitudinal frame portions (4) extend in a common second geometric reference plane (B₂), the longitudinal frame portions (4) being located in their entirety between the first reference plane (B₁) and the second reference plane (B₂), in that, on the longitudinal frame portions (4), the longitudinal groove (21) is in each case located nearer to the first reference plane (B₁) than to the second reference plane (B₂) and in that the lattice (16), in particular the transverse braces (18) thereof in the apex (67) of the convex curvature, extends or extend, respectively, on the side facing the first reference plane (B₁) as far as the first reference plane (B₁), without projecting therebeyond.
16. Panel (1) according to one or more of claims 12 to 14, characterised in that the panel (1) has one or more, in particular two, transverse intermediate beams (68), each transverse intermediate beam (68) extending transversely, in particular perpendicularly, to the longitudinal intermediate beam (64) and being fastened, in particular welded, at the two longitudinal ends (69) thereof, to one of the two longitudinal frame portions (4) in each case.
17. Panel (1) according to claim 16, characterised in that the longitudinal intermediate beam (64), in the vertical direction (H) of the panel on the side thereof which faces away from the lattice (16), rests on the transverse intermediate beam (68) or on the transverse intermediate beams (68) and/or is directly or indirectly connected thereto.
18. System ceiling formwork (2), comprising vertical supports (45) which support a drophead (48) which can be locked thereto in at least two different vertical positions, and crossbeams (46) which can be supported on the dropheads (48), and panels (1) which can be supported, at two opposite longitudinal ends (7), on crossbeams (46) which extend at a spacing from one another and/or on dropheads (48) which are at a spacing from one another, characterised in that the system ceiling formwork (2) comprises at least panels (1) according to one or more of the preceding claims.
19. System ceiling formwork (2) according to the preceding claim, characterised in that, in a state of use in which the dropheads (48) are locked in the upper vertical position, the upper sides of the vertical supports (45), the crossbeams (46) and at least the longitudinal frame portions (4) of the panels (1) lie in a common plane, it being provided in particular that crossbeams (46) have a receiving groove which is open on the top side and in which a wooden slat (54) for fastening, in particular for nailing, the formwork shell is fixed.
20. System ceiling formwork (2) according to one or more of claims 18 and 19, characterised in that formwork shell panels (52) are laid on and fastened to a supporting structure (47) which is formed from vertical supports (45) and from crossbeams (46) supported thereon and laid on and fastened to panels (1) which are supported on the supporting structure (47), the area of individual formwork shell panels (52) being greater, in particular by an integer multiple or a multiple which is not an integer, than the area of individual panels (1).
21. System ceiling formwork (2) according to one or more of claims 18 to 20, characterised in that the height (X) of the longitudinal frame portions (4) of the panels (1), which is measured perpendicularly to the panel plane (E), is the same as or greater than the lowering range of the drophead (48) from the upper into the lower lockable vertical position and/or in that the height (Y) of the longitudinal frame portions (4) of the panels (1), which is measured perpendicularly to the panel plane (E), from the bracing surfaces (9) to the upper side (57) thereof corresponds to the height of the crossbeams (46) from the bracing surface thereof to the upper side thereof.

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