DK3242983T3

DK3242983T3 - Framed-up panel-form element

Info

Publication number: DK3242983T3
Application number: DK16701908.2T
Authority: DK
Inventors: Werner Schneider
Original assignee: Peri Gmbh
Priority date: 2015-01-07
Filing date: 2016-01-07
Publication date: 2018-11-19
Also published as: DE102015200083A1; ES2693022T3; EP3242983A1; WO2016110539A1; CN107109852A; CN107109852B; EP3242983B1

Description

The invention relates to a frame-panel formwork element for producing concrete components, comprising a peripheral support frame and a form lining that is fastened to the support frame. The invention further relates to a formwork having a plurality of such frame-panel formwork elements.

In the construction field, concrete formwork elements for the production of concrete components, in particular walls or ceilings, made of in-situ concrete are used. During the production of the concrete components, the concrete formwork elements are in direct contact with the fresh concrete and determine the shape and surface structure of the finished concrete component. They must withstand the hydrostatic pressure of the initially liquid concrete and must suitably dissipate this pressure. In particular, in the production of high walls or pillars, the concrete pressure can reach very high values. This results in demanding requirements for strength and rigidity of the concrete formwork elements. Furthermore, the surface quality of the concrete is also determined substantially by the form lining adjacent to it, giving rise to further requirements relating to the concrete formwork elements during the production of exposed concrete components.

In a concrete formwork element configured as a frame-panel formwork element, the form lining and the support structure, i.e. the support frame, are combined into a preassembled unit. As a result, frame-panel formwork elements offer the advantage that they can be joined simply and quickly to one another in a modular manner in order to be able to produce concrete components of any dimensions. At the same time, they simplify the construction process since, for example, a plurality of interconnected frame-panel formwork elements can be jointly handled, which saves time and helps to avoid errors.

Frame-panel formwork elements are reusable concrete formwork elements, i.e. after the fresh concrete has set, they are removed from the concrete component (stripping out) and can be used for the production of further concrete components. In this respect they differ from so-called lost formwork elements which remain permanently on the concrete component and are therefore constructed in a different way.

The support frame of the frame-panel formwork elements available on the market can have somewhat costly struts and supports for the generally very thick form linings, in order to be able to withstand the load of the liquid concrete. In this case, the great thickness of the form lining is necessary so that, in regions arranged between the supporting elements, this lining can withstand the concrete pressure without deforming unacceptably or even breaking. Frame-panel formwork elements are therefore correspondingly heavy and expensive to produce. DE 10 2013 204 999 Al discloses a frame-panel formwork element in which the form lining has a low inherent rigidity (in particular, a form lining made of plastics material with a modulus of elasticity of less than 4000 MPa is provided). The peripheral support frame is formed of interconnected rectangular frame profiles. The support frame is additionally stiffened by stiffening profiles, i.e. longitudinal and transverse bars, to which the form lining is additionally firmly screwed. This design necessitates a high production expenditure, because the plurality of profiles must be fastened to the form lining and the frame elements. In order to achieve a sufficient stabilizing effect of the longitudinal and transverse bars, these bars must be connected at many points to the form lining, for example with screws or rivets. Because of the multiplicity of fastening points, replacement of a worn or damaged form lining is only possible with substantial expenditure of time and costs. Furthermore, due to the abutment of the edge regions of the longitudinal and transverse supports over a large surface area on the form lining, nailing of the form lining is hampered, since nails driven into the form lining from the front can only penetrate completely into those regions of the form lining in which the form lining does not abut any of the longitudinal or transverse bars of the support frame. Furthermore, the frame-panel formwork element has a substantial weight and is therefore difficult to handle. JP2006183313 A discloses a frame-panel formwork element according to the preamble of claim 1.

Object of the invention

Therefore the object of the invention is to provide a frame-panel formwork element for the production of concrete components with high rigidity and strength values which is overall simpler and more cost-effective to produce, and in which the form lining can be designed for further improved nailing and at the same time to be more compact. A further object of the invention is to provide a formwork with a plurality of such frame-panel formwork elements.

Brief description of the invention

This object is achieved according to the invention by a frame-panel formwork element for production of concrete components with the features set out in claim 1 and also by a formwork according to claim 14.

Due to the support grid, which is frictionally connected to the support frame, it can be ensured that the form lining does not flex excessively under the pressure of the fresh concrete. In this case, the support grid spans an opening formed in the peripheral support frame. The form lining preferably rests against the entire surface of the support grid, on the support grid, and is supported on the rear side by the support grid.

As a result, even with a thickness of the support grid of less than half of the thickness of the support frame, a good supporting effect of the form lining is produced without the support grid having to be unnecessarily heavy for this purpose. The form lining can be made thinner overall by the integration according to the invention of a planar form lining support grid, which is thin relative to the support frame, into the frame-panel formwork element. This saves costs and weight. The latter is advantageous for the handling of the frame-panel formwork element. Furthermore, during the concreting operation, the support grid fastened to the support frame can absorb shear, tensile or compressive forces resulting from the fresh concrete pressure, so that the support frame itself can be made overall thinner and thus lighter. Moreover, due to the planar support of the form lining on the support grid, a material with a lower inherent rigidity can be used for the form lining. Therefore, in the frame-panel formwork element according to the invention, the material of the form lining can largely be selected freely without restrictions existing in conventional frame-panel formwork elements. In particular, the material of the form lining can be optimized with regard to its characteristics which influence the quality of the concrete component to be produced. In just the same way, increased attention can be paid to characteristics such as nailability, abrasion resistance or recyclability (purity of type of the form lining material) of the form lining.

In the present application, the support grid is understood to be a planar, substantially plate-like grid element with structural elements between which a plurality of mesh holes or through-passages/recesses are formed. In other words, the support grid can be understood in the sense of a grating.

The support grid comprises a plurality of structural elements which are in each case oriented along a first or a second direction and are spaced apart from one another, so that structural elements along the first direction cross structural elements along the second direction. The structural elements of the first and the second direction can cross according to the invention in such a way that the mesh holes or recesses between the structural elements in each case have internal angles between 30° and 90° or between 150° and 90°. The distances between adjacent structural elements of each direction, measured orthogonally to the structural elements, can be the same within the entire support grid. Furthermore, the distances between adjacent structural elements along both directions can be the same size.

Due to the support of the form lining on the support grid, the number of stiffening profiles (in particular longitudinal and/or transverse struts) of the support frame can be reduced or it is even possible to dispense with such stiffening profiles completely. As a result, an overall simpler and more cost-effective production of the frame-panel formwork element, as well as a reduced weight of the frame-panel formwork element, is possible. In the event of particularly high requirements with regard to the load bearing capacity and the torsion resistance of the frame-panel formwork element, the support frame can self-evidently have such stiffening profiles.

The support frame of the frame-panel formwork element can be formed in a manner which is known per se from peripherally arranged frame profiles or profiled elements. In particular, the support frame can comprise hollow profiles, which are interconnected, for example welded to one another, such as, for example, rectangular tubes. Furthermore, the profiled elements of the support frame serve in a manner which is known per se to be able to interconnect a plurality of frame-panel formwork elements. In this case, by the use of the support grid, it can be ensured that sufficient space remains on the peripheral support frame for the attachment of alignment couplers. Furthermore, the peripheral support frame acts as an edge protection for the form lining. The support frame can be made, for example, of steel, aluminum or also a composite fiber material.

The structural elements of the support grid preferably have a moderate thickness transversely to a longitudinal direction of the structural element which is significantly smaller than the thickness of the support grid, measured perpendicularly to the plane in which the support grid extends or which is spanned by the support grid. In this case, the thickness of the support grid corresponds to the (overall) height of the structural elements.

According to the invention, the thickness of the structural elements can in particular be less than half, preferably less than a quarter, of the height of the structural elements.

Furthermore, the average thickness of the structural elements of the support grid can preferably be less than the distance between two adjacent structural elements along a common direction. The distance between two adjacent structural elements is typically more than five times, preferably more than ten times as great as the average thickness of the structural elements.

From the point of view of production technology, the structural elements can be advantageously configured as a solid material. The structural elements can have, for example, a round, polygonal, in particular rectangular or also elliptical or oval cross section.

According to a preferred embodiment of the frame-panel formwork element, the support grid can in particular be constructed integrally. Such a support grid is cost-effective to produce and at the same time can be implemented with a high load bearing capacity.

Alternatively, the support grid can comprise structural elements which are clamped or welded to one another. In this case the structural elements can be configured in particular as flat profiles.

The form lining of the frame-panel formwork element according to the invention can also consist of any suitable material or material composite. In particular, it can be produced, for example, from wood, a wood-based material, a multiplex plate or a plastics material, in particular a fiber-reinforced plastics material, or from a multi-ply plastics material laminate. It will be understood that the form lining can be coated on the front side in a known manner, in order to simplify the stripping out of the frame-panel formwork element or to improve the surface quality of the concrete components to be produced.

The form lining is preferably releasably fastened to the support frame in order to be able to replace it simply and cost-effectively in the event of wear or damage. Furthermore, the form lining can also be adapted thereby, if required, to the desired concrete surface quality or structure. In the present case, a releasable fastening is understood to be a fastening in which, when the fastening is released, in any case the fastening means, such as for example screws or rivets, are damaged or destroyed, whereas the components connected to the fastening means, in this case in particular the form lining, the support frame and the support grid, are not damaged.

According to a preferred embodiment of the frame-panel formwork element, the support grid is fastened peripherally on the support frame. Therefore, in this case, the support grid is fastened (in particular directly) to all peripheral frame profiles or profiled elements of the support frame. As a result, a particularly stiff and reliable connection of the support grid to the support frame can be achieved. Thus the form lining is also supported particularly well. Furthermore, the support frame can be stiffened by the support grid itself. The profiled elements of the support frame can in each case be produced with a smaller cross section or with a smaller wall thickness. This offers further advantages with regard to costs and weight.

According to one embodiment of the invention, the support grid can be fastened to inner wall portions of the support frame. In this case, a front face of the support grid is preferably oriented flush with the front face of the support frame or of the profiled element thereof. As a result, a step-free and planar bearing surface for the form lining can be provided by the support frame and the support grid. The form lining is then supported by a first part-region on the support frame and by a second part-region on the support grid. It will be understood that the profiled elements of the support frame can be provided with a (raised) profiled edge which engages over the form lining peripherally, i.e. laterally, for protection, in order to counteract damage to the front edge of the form lining during transport as well as during use of the frame-panel formwork element on a building site.

The support grid can advantageously be glued or welded firmly to the inner wall portion. Due to the abutment of the support grid on inner wall portions of the support frame, it is possible to simplify the positioning of the support grid during the production of the frame-panel formwork element. Alternatively, the support grid can be screwed on the support frame or riveted thereto.

According to the invention, the support grid can be interlockingly secured to the support frame. The support grid can then be installed particularly simply. The correct positioning of the support grid on the support frame during fitting of the frame-panel formwork element is simplified by the interlocking arrangement. In particular, in this embodiment, it is only necessary to ensure that a front face of the support grid is produced precisely and secured in a correct orientation on the support frame, so that the support of the form lining is guaranteed. In the plane in which the support grid extends, there can be a certain clearance, for instance in the order of magnitude of half a mesh size, relative to the support frame, without the function of the frame-panel formwork element being restricted as a result.

According to a preferred further embodiment of the invention, the support grid is arranged so as to be held clamped between the form lining and the support frame. In this case, the support grid is fixed between the form lining and abutment elements arranged or formed on the support frame. This simplifies the fitting of the frame-panel formwork element, as the support grid can be secured without additional expenditure during fastening of the form lining on the support frame.

The support grid can be welded, screwed, riveted and/or bonded to the support frame according to the invention. Thus a reliable connection of the support grid and support frame is guaranteed, which can be implemented in a simple manner during the production of the frame-panel formwork element.

The majority of the form lining can be designed to be opaque. In particular, more than 70%, preferably more than 90%, of the surface spanned by the form lining can be designed to be opaque. Particularly preferably, the form lining is designed to be completely opaque.

Alternatively or in addition, the majority of the surface spanned by the form lining can be impermeable to water. In particular more than 70%, preferably more than 90%, of the surface spanned by the form lining can be impermeable to water. Particularly preferably, the form lining is completely impermeable to water.

The support grid can be formed in particular of crossed structural elements which are interconnected by integral bonding. As a result, a particularly great rigidity and strength of the support grid is achieved.

From the point of view of manufacturing technology, the support grid is preferably designed as an expanded grid. The expanded grid can consist in particular of steel or aluminum, i.e. can be formed by an expanded metal. In this case, the mesh holes of the grid-like material produced from panels or strips are not braided or welded. The expanded metal can have, for example, diamond mesh holes, hexagonal mesh holes or square mesh holes. Such an expanded grid or expanded metal is available on the market, cost-effectively pre-assembled.

Furthermore, the supporting or expanded grid can also be made of plastics material. A fiber reinforced plastics material, for example a fiberglass reinforced plastics material, is suitable as the plastics material. With these materials, on the one hand, the necessary stability of the support grid can be achieved, without in this case unnecessarily increasing the weight of the frame-panel formwork element. On the other hand, as a result, the frame-panel formwork element offers advantages when used in corrosive environments. According to a particularly preferred further embodiment of the invention, the aforementioned structural elements of the support grid have a cross section that tapers at least partially towards the form lining. As a result, only a small proportion of the surface of rear side of the form lining is in direct contact with the support grid, while the stability of the support grid and thus its supporting effect are maintained. The nailability of the form lining is improved by the locally very limited contact of the support grid and the form lining. When nails or screws, which are respectively driven or screwed into the form lining, and penetrate it, from the front for fastening of accessories, encounter the support grid, they can be guided by the oblique sides (= lateral flanks) of the structural elements into the free spaces formed by the mesh holes of the support grid.

According to the invention, the support grid has a maximum mesh size which is smaller than a width of a profiled element of the peripheral support frame. In this case, the width of the profiled element is measured perpendicular to a longitudinal direction of the profiled element and in parallel with the plane of the form lining. The support of the form lining is particularly consistent in this case. Furthermore, the structural elements can be thinner, since the mechanical stability of the support grid is ensured by the greater number of structural elements. As a result, the nailability or the screwability of the form lining can be even further improved.

The support grid can have two or even more surface regions which differ from one another by their maximum mesh size. In this case, the maximum mesh size of the individual surface regions is preferably geared to the fresh concrete pressure load on the surface region or on the form lining surface region supported thereon, which pressure load is to be expected in each case during operational use of the frame-panel formwork element, in order to thus ensure sufficiently support of the form lining.

In a particularly preferred embodiment of a frame-panel formwork element, the form lining can be fastened to the support grid and to the support frame from the rear by screws projecting through the support grid. In this case, the screws preferably do not project out of the form lining on the front side. The fastening of the form lining is possible particularly simply due to this type of screw connection. In this case, the support grid can be secured to the support frame, as explained above. In particular, the screws can be supported directly on the rear side on the support grid for fastening of the form lining. In this case, the support grid can be welded, for example, to the support frame. Alternatively, abutment elements can be provided, on which the support grid abuts at the front. On the rear side of these abutment elements, the screws can then be supported and can engage in the form lining through the abutment elements, so that the form lining, support grid and support frame are firmly interconnected. Furthermore, the screw connection at the rear by screws that do not protrude through the form lining makes possible a planar form lining front face without imperfections, so that the visual impression of quality of the produced concrete components is improved. The support frame of the frame-panel formwork element can consist substantially only of peripherally arranged profiled elements, i.e. the support frame has no further longitudinal or transverse bars which span an opening formed in the support frame. In this case, the support grid only spans the opening formed in/by the support frame. As a result, the frame-panel formwork element can be a lightweight construction and at the same time the production of the frame-panel formwork element is further simplified. This embodiment of the frame-panel formwork element is suitable in particular for smaller overall sizes, in which the peripheral support frame is already stabilized sufficiently by the support grid fastened thereto.

It will be understood that the support frame can have, in addition to the support grid, at least one transversely and/or longitudinally extending stiffening profile (preferably a hollow profile). In this case, the stiffening profile can be formed as a hollow profile in a manner corresponding to the profiled elements or can have a profile cross section corresponding to the profiled elements. As a result, the load bearing capacity of the frame-panel formwork element can be further increased. This can be necessary in particular in the case of greater dimensions of the frame-panel formwork element. An additionally stiffened frame-panel formwork element is also suitable particularly for the production of concrete components which exert a substantial concrete pressure on the form lining, or if particularly high requirements are imposed on the dimensional stability of the concrete component to be produced.

Furthermore, the object according to the invention is achieved by a formwork for producing a stationary concrete structure, the formwork having at least two previously described frame-panel formwork elements arranged adjacent to one another.

Further advantages of the invention are disclosed by the description and the drawings. Fikewise, the features referred to above and the further features set out here can each be used according to the invention alone or several can be used in any combinations. The embodiments shown and described should not be understood as a definitive listing, but rather as examples for explanation of the invention.

The invention is explained in greater detail below with reference to exemplary embodiments illustrated in the drawings. In the drawings:

Figure 1 shows, in a view from the form lining, a frame-panel formwork element having a form lining shown partially broken away, a support frame arranged so as to lie below it, and a support grid for the form lining fastened to the support frame;

Figure 2 shows a sectional representation of the frame-panel formwork element according to Figure 1 with the support grid fastened to inner wall portions of the support frame;

Figure 3 shows a view from the rear of the frame-panel formwork element, wherein the form lining and the support grid are screwed to abutment elements arranged on the support frame; Figure 4 shows a sectional representation of the frame-panel formwork element according to Figure 3;

Figure 5 shows the support grid of a frame-panel formwork element according to Figures 1 and 2 with tapering structural elements, the narrow faces of the structural elements abutting the form lining; and

Figure 6 shows a formwork with a plurality of frame-panel formwork elements.

Figure 1 shows a frame-panel formwork element 10 with a peripheral support frame 12 and a form lining 14 that is fastened to the support frame in a view from the form lining. The form lining 14 is shown partially broken away in Figure 1, in order to reveal the components lying behind it. In principle, the frame-panel formwork element 10 can be used for wall or ceiling formworks.

The support frame 12 is formed of individual profiled elements 16 (= frame profiles) which are permanently interconnected at the ends 18 thereof facing one another. The profiled elements 16 are in each case designed as hollow profiles and can in particular be welded to one another. The support frame 12 can have, in addition to the profiled elements 16 arranged on the edge, one or more stiffening profiles that are arranged so as to extend transversely or longitudinally, as indicated in Figure 1 by a broken line (not designated). Such stiffening profiles can, for example, have a cross section corresponding to the profiled elements 16 of the support frame 12 and, like them, can in each case be formed as a hollow profile.

The support frame 12 has an opening 20 which is delimited peripherally by the individual profiled elements 16 of the support frame 12. A support grid 22 for the form lining 14 is arranged in the region between the profiled element 16 of the peripheral support frame 12. The support grid 22 covers the opening 20 of the support frame 12. At the rear, the form lining 14 abuts a front face 24 of the profiled elements 16 of the peripheral support frame 12 as well as the support grid 22 and is supported thereon. The form lining 14 can be fastened releasably, in particular screwed, to the support frame 12 in a manner not illustrated in greater detail. It will be understood that the form lining 14 can also be riveted firmly to the support frame 12.

The support grid 22 prevents the form lining 14 from flexing more than is permissible under a concrete pressure acting on the form lining 14 during operational use of the frame-panel formwork element 10. As a result, in the design and selection of material for the form lining 14, attention does not have to be paid primarily to ensuring the greatest possible rigidity and strength of the form lining, so that the form lining withstands the concrete pressure without planar support. In fact, the material characteristics of the form lining are designed specifically for the nailability, the surface structure, strippability, weight, recyclability (purity of type), wear resistance or abrasion resistance thereof. In particular, the form lining 14 can be designed to be thinner overall and thus lighter and more cost-effective.

As shown in Figure 1, the support grid 22 is formed by a plurality of crossed structural elements 26. As a result, a plurality of mesh holes 28 is formed between the structural elements 26. The mesh holes 28 can be rhomboid, as shown in Figure 1, or can have a different shape, for example a square, hexagonal or also rounded shape. The individual mesh holes of the support grid have a first angle al with al > 90° and a second angle a2 with a2 < 90°.

The structural elements 26 of the support grid 22 can be interconnected by integral bonding at their crossing points 30, in order to achieve a high load bearing capacity of the support grid 22 .

The support grid 22 can be formed integrally as an expanded grid made of metal, in particular aluminum, or of plastics material. Thus, in the first-mentioned case, the expanded grid is formed as a so-called expanded metal. In the case where the expanded grid is made of plastics material or a plastics compound material, the frame-panel formwork element 10 can be implemented with an even lower weight.

The mesh holes 28 of the support grid 22 have a uniform maximum mesh size MW, which is smaller than the (uniform) width BP of the profiled elements 16 of the peripheral support frame 12. As a result, a uniform support for the form lining 14 can be achieved. If required, the support grid can also have mesh holes or surface regions with a different maximum mesh size MW.

It will be understood that in a manner known per se, the frame-panel formwork element 10 can have holes for anchor bars (not shown) to pass through.

Figure 2 shows a sectional representation of a detail of the frame-panel formwork element 10 according to Figure 1. In the illustrated exemplary embodiment, the support grid 22 abuts inner wall portions 32 of all four profiled elements 16 of the peripheral support frame 12 and is in each case welded thereto. As a result, the support grid 22 is arranged so as to be held (stretched) like a net between the profiled elements 16 of the support frame. Alternatively or in addition, the support grid 22 can also be screwed or riveted to the profiled elements 16 of the support frame 12 or also bonded to the profiled elements 16.

The support grid 22 is oriented flush with the front faces 24 of the profiled elements 16 of the peripheral support frame 12 in the direction of an axis 34 of the frame-panel formwork element 10 oriented orthogonally to the form lining 14, in order to, jointly with the support frame 12, thus enable a step-free and planar abutment of the form lining 14. For reasons of weight, the profiled elements 16 are designed as hollow profiles and have a rectangular cross section.

The thickness DS of the support grid 22 in each case is less than half of the thickness DT of the support frame 12. In the present case, the thickness DS of the support grid 22 is less than one quarter of the thickness DT of the support frame 12. The thickness DS of the support grid 22 can also be even smaller and, for example, can be less than one eighth of the thickness DT of the support frame 12. This thickness DS of the support grid 22 is sufficient in order to ensure the required supporting effect for the form lining 14. As a result, at the same time, there is still sufficient free space remaining on the inner wall portions 32 of the profiled elements 16 in order to be able to interconnect a plurality of frame-panel formwork elements 10, for example for forming walls, with the aid of alignment couplers (not illustrated) or the like. It will be understood that, in a manner known per se, for this purpose the support frame can have undercuts for the alignment couplers or recesses for other connecting means (not shown).

Figure 3 shows a rear view of a further frame-panel formwork element 10, in which the form lining 14 is screwed to the support frame 12 through the support grid 22. The support frame 12 has abutment elements 36 for the support grid 22. The abutment elements 36 are fastened to the support frame 12, but can also be formed by the support frame 12. In this case the abutment elements 36 are designed, for example, as angled profiles welded on the support frame 12. Screws 38, which extend through the abutment elements 36 and the support grid 22 and engage with their free end in the form lining 14, serve for common fastening of the support grid 22 and the form lining 14 on the support frame 12. It will be understood that a plurality of such screws 38 must be arranged spaced apart from one another in the peripheral direction of the support grid 22 in order to fasten the support grid 22 on all sides to the support frame 12.

Figure 4 shows a detail of the frame-panel formwork element 10 according to Figure 3 in cross section. The screws 38 are supported, for example, with the rear side of their screw heads 40 on the abutment element 36 and extend through holes 42 in the abutment elements 36 as well as the support grid 22 and engage on the rear side in the form lining 14.

The length (not designated) of the screws 38 is in each case selected in such a way that the screws 38 do not completely penetrate the form lining 14. In this way it is ensured that the surface 44 of the form lining 14 has no imperfections caused by protruding screws 38 (or rivets in the case of alternative fastening). As a result, concrete components of the highest exposed concrete quality can be produced with the frame-panel formwork element 10 according to the invention.

As shown in Figure 4, the support grid 22 directly abuts the front face 24 of the support frame 12 or of the profiled elements 16 thereof. By the action of force of the screws 38 engaging in the form lining 14, the support grid 22 is clamped to the support frame 12 or is secured to the support frame 12 via the form lining 14.

According to an exemplary embodiment not illustrated in greater detail in the drawing, with the screw connection at the rear, the support grid 22 can also be arranged completely inside the opening 20 formed in the support frame 12 (similar to the exemplary embodiment illustrated in Figure 2), so that on the outside the support grid 22 borders on the inner wall portions 32 of the profiled elements 16 of the support frame 12. The form lining 14 is then pressed onto the support frame 12 by the screws 38. In this case, the support grid 16 is secured interlockingly between the form lining 14, inner wall portions 32 of the support frame 12 and the abutment element 36. On the other hand, in the installation situation illustrated in Figure 4, the form fit is limited to a direction perpendicular to the plane of the form lining 14. In the plane of the form lining 14, the fixing takes place by frictional connection on the basis of the pretensioning of the screws 38.

Figure 5 shows a view of a detail of the contact situation between the form lining 14 and the support grid 22, showing how this can be implemented in the frame-panel formwork elements 10 explained above in connection with Figures 1 to 4.

The structural elements 26 of the support grid 22 have a cross section that tapers along the axis 34 of the frame-panel formwork element 10 in the direction of the form lining 14. Therefore the structural elements 26 have lateral flanks 46 that are arranged so that they extend obliquely relative to one another. The lateral flanks 46 can be arranged in particular so as to extend obliquely relative to one another at a flank angle β of 90°< β < 30° on the form lining side. As a result, with the same stability of the support grid 22 by comparison with non-tapering structural elements 26, a comparatively small surface area of the form lining is in direct contact with contact and support surfaces 48 of the structural elements 26 of the support grid 22. This improves the nailability of the form lining 14. Thus, as a result, nails driven in or screws screwed in from the front into the form lining 14 are less likely to encounter a structural element 26 of the support grid 22 abutting the form lining 14. Furthermore, the nails/screws from the oblique sides or lateral flanks 46 of the structural elements 26 can be guided reliably into the mesh holes 28 of the support grid 16. If the structural elements 26 are narrow enough at the end in the direction of the form lining 14, i.e. the bearing surfaces 48 of the structural element 26 for the form lining 14 are sufficiently narrow, even nails that directly encounter an individual structural element 26 from the front are deflected on the lateral flanks 46 and are guided into the mesh holes of the support grid 22, if the nails—as is usual in practice—are driven slightly obliquely into the form lining 14. It will be understood that with regard to the nailability of the form lining 14, the structural elements 26 also have another suitable cross-sectional shape, in particular with convex shaped lateral flanks 46.

The structural elements 26 are all constructed in the form of bars and have an average thickness DE which is (significantly) smaller than the thickness (structural height) DS of the support grid 22. The average thickness DE can be, as is the case in Figure 5, about a third of DS or also less. DE is preferably less than a quarter of DS. The distance between two adjacent structural elements 26 can be, for example, three to twenty times the average thickness DE of the structural elements 20. In this way a high stability of the support grid 16 is achieved relative to the weight of the support grid 22. The nailability of the form lining 14 through narrow structural elements 26 of the support grid 22 is also improved.

Figure 6 shows a formwork 50 with a plurality of previously described frame-panel formwork elements 10. The frame-panel formwork elements 10 can be interconnected by at least one assembly lock (not shown) of the formwork 50. Portions of the support frames 12 of the frame-panel formwork elements 10 abut one another directly.

The frame-panel formwork element 10 according to the invention can be designed to be lighter overall due to the use of the support grid 22, and as a result can be handled more easily in practice. Furthermore, the support frame 12 as well as the form lining 14 can be produced overall with a lesser use of material, i.e. in each case with a reduced wall thickness than was hitherto possible.

Claims

A frame panel formwork element (10) for the manufacture of concrete components, with a support frame (12) at the periphery and with a formwork liner (14) fixed to the support frame (12), the support frame (12) and the formwork liner (14) being assembled to a pre-mounted unit, a support lattice (22) being secured immediately to the support frame (12) by friction, which support lattice rear of the formwork liner (14) abuts and is supported, the support lattice being in the form of a flat, plate-shaped lattice element with structural elements between which there is a plurality of holes, and the thickness (DS) of the support grating (22) constitutes a maximum of half the thickness (DT) of the support frame (12), characterized in that the peripheral support frame (12) has profile elements (16) having a width (BP) ), and the support grid (22) has a maximum mesh width (MW), the maximum mesh width (MW) being less than the width (BP) of the profile elements (16).

The frame panel formwork element according to claim 1, characterized in that the support grating (22) is fixed in the peripheral support frame (12).

Frame panel formwork element according to claim 1 or 2, characterized in that the support grating (22) is fixed to the inner wall section of the support frame (12).

Frame panel formwork element according to one of the preceding claims, characterized in that the support grating (22) is fixed to engage the support frame (12).

Frame panel formwork element according to claim 4, characterized in that the support grating (22) is positioned between the formwork liner (14) and the supporting frame (12).

Frame panel formwork element according to one of claims 1 to 3, characterized in that the support grating (22) is welded, screwed, riveted and / or glued together with the support frame (12).

Frame panel formwork element according to one of the preceding claims, characterized in that the formwork liner (14) is made opaque.

Frame panel formwork element according to one of the preceding claims, characterized in that the formwork liner (14) is made of water-impermeable.

Frame panel formwork element according to one of the preceding claims, characterized in that the support grating (22) is made of steel, aluminum or a plastic material.

Frame panel formwork element according to one of the preceding claims, characterized in that the support grating (22) is formed of crossed structural elements (26) which are integrally connected to each other.

Frame panel formwork element according to one of the preceding claims, characterized in that the support grating (22) is made of an extruded metal.

Frame panel formwork element according to one of the preceding claims, characterized in that the structural elements (26) of the support grille (22) in their cross-section at least partially tapering towards the formwork liner (14).

Frame panel formwork element according to one of the preceding claims, characterized in that the formwork liner (14) is fixed to the support grating (22) and to the support frame (12) with screws (38) extending through the support grating (22).

Formwork (50) for producing a stationary concrete element, the formwork (50) having a plurality of frame panel formwork elements (10) according to one of claims 1 to 13 located side by side.