ES2857750T3 - Composite component with flat concrete precast part for the construction of car parks - Google Patents

Abstract

Composite component (1) for the construction of car parks: - with a flat precast concrete part (4), - having at least one textile reinforcement (24) of the net type, arranged at least partially inside the finished concrete part ( 4), - where the textile reinforcement (24) has arches of fibers (14), which protrude at least partially out of the precast concrete part (4), - with a beam element (2) to accommodate the at least one precast concrete piece (4), - with at least one composite material strip (6) to expel the forces absorbed by the at least one textile reinforcement (24), where the composite material strip (6) and the textile reinforcement (24) are functionally connected to each other for the transmission of force, - wherein the at least one strip of composite material (6) has a first lower section (8), which with the at least one beam element ( 2) configures a common contact surface and / or is firmly connected with the at least one beam element (2), - because the at least one strip of composite material (6) has a second section (10), arranged vertically offset from the first section (8) for accommodation of the textile reinforcement (24), - because the second upper section (10) of the composite material strip (6) has a plurality of projections (12), and is characterized in that - the projections (12) are configured in a undulating in vertical direction.

Description

DESCRIPTION

Composite component with flat concrete precast part for the construction of car parks

The invention relates to a flat concrete precast part for the construction of car parks according to the preamble of claim 1, as well as to a composite component for the construction of car parks according to the preamble of claim 2, as well as to its use. Today it is still very common to assemble concrete pieces, for example, for the construction of buildings or bridges, with steel construction pieces. These are inserted into the formwork, which is then finally filled with concrete. In this sense, it is a non-prestressed reinforcement, where the concrete absorbs the compression forces and the steel construction part absorbs the active traction forces. Due to the nature of concrete, steel construction parts founded on it are subject to corrosion, and consequently, over time, lose their ability to absorb tensile forces, leading to unwanted cracks and damage to the building. or the bridge. Therefore, expensive sanitation and conservation measures are necessary. In addition, the diameter of the steel construction parts, or also mesh, specify the wall thickness and corresponding concrete covers (distance of the surface of the concrete construction part with respect to the reinforcement) of the formwork, so that in this In this case, a large volume of concrete is always required for filling, which, in combination with the respective steel component, also leads to a high weight load on the building or bridge.

From EP 2894272 A2, mixed construction parts of the aforementioned type are known, in which the flat concrete finished parts are connected by outwardly protruding loops or meshes with shear connecting bolts, which are arranged along the element. beam. The individual shear connector bolts are independently and individually attached to the beam element.

Therefore, the objective of the present invention is to provide a composite component for the construction of parking lots, in which the connection between the beam element and the precast concrete part is improved.

This objective is achieved according to the characteristics of claim 1.

Before the description of the solution according to the invention according to claim 1, a precast flat concrete part for the construction of parking lots is initially described, which has at least one textile reinforcement of the net type, arranged at least partially inside the part. precast concrete, which has the function of completely absorbing the internal tensile stresses that act on the precast concrete part. This functionality is clarified by the following description of the configurations of the textile reinforcement.

The flat precast concrete part is advantageously configured as a roof concrete precast part and / or wall concrete precast part for the construction of car parks, more advantageously, the flat concrete precast part is configured as a concrete precast part of Building roof and / or precast concrete part of building wall and particularly advantageously the precast concrete part described in this case is configured as precast concrete part of parking roof and / or precast concrete part of parking wall . This has proven to be advantageous since the construction of car parks, which also includes car park floors, often has to be done quickly and cost-effectively, while at the same time imposing high requirements on stability, durability, practical utility and static. .

The finished, flat concrete parts described in this case are advantageously prefabricated at the factory and then on site at the construction site by means of frictional joining together and / or with the beam element, so that a joint is created. shear resistant. Additionally, it is advantageous to stabilize this functional connection additionally by means of force drag between the textile reinforcement of the precast concrete part and the composite strip, which is configured together with the beam element, by filling and curing with concrete. This results in a shear-resistant joint and a job-finished composite component.

The flat precast concrete part has at least one mesh-type textile reinforcement, which has a plurality of mesh-shaped through openings. The number and size of the meshes is adapted to the concrete used for the precast concrete part. The meshes of the textile reinforcement are configured in such a way that during filling with liquid, homogeneous concrete, its homogeneity is preserved, and no separation of the concrete components takes place. The textile reinforcement can also be understood in the sense that it is configured two-dimensional (biaxial) and / or three-dimensional (multiaxial and multilayer).

It has turned out to be particularly advantageous to also arrange the net-type textile reinforcement flat inside the flat concrete precast piece, so that the reinforcing function is advantageously made possible within the entire surface of the concrete precast piece.

The textile reinforcement described in this case is used in the composite component described in this case with a flat concrete piece. By configuring the armor as a textile, most advantageously a plurality of fibers and / or fiber bundles, even more advantageously of a plurality of high-strength fibers and / or of fiber bundles formed by high-strength fibers, the wall thickness of the precast concrete part can be significantly reduced with respect to to precast reinforced concrete parts. Advantageously, the biaxial net-type textile reinforcement itself has a thickness of approximately <1.0 mm to approximately 50 mm and perfectly greater. Advantageously an overall thickness of the biaxial textile reinforcement is in the range of 1 mm to 6 mm. The thickness of the textile reinforcement is advantageously adapted in each case to the diameter and number of the fibers and / or fiber bundles used for the textile reinforcement.

Thus, it is conceivable, for example, that the textile reinforcement is made up of individual fibers, where it has at least one first type of fibers, for example longitudinal fibers, and at least one second type of fibers, where the second type of fibers is present. arranged at a predetermined angle with respect to the first type of fibers. In the simplest case, the second type of fibers is configured as transverse fibers, which are arranged perpendicular to the longitudinal fibers. The longitudinal fibers and transverse fibers each form a fiber layer. The joining of the two layers of fibers to each other can be carried out by known weave methods, such as satin weave, linen weave or the like. However, it is also possible that the fiber layers are joined by or additionally by a type of adhesion with chemical coatings or resins in force and / or form entrainment, similarly to in the welding of steel reinforcement mats.

This, of course, is not to be understood in a delimiting sense, so that it is also conceivable to arrange the second type of fibers at a predetermined angle of 30 °, 40 °, 50 °, 60 ° 70 ° 80 ° out of phase with respect to to the longitudinal fibers. By means of this oblique arrangement of the fibers and / or fiber bundles, an additional stability of the net-type textile reinforcement can be achieved.

Furthermore, for a greater absorption of force and stability of the textile reinforcement it is advantageous to provide at least the first and second type of fibers (filaments) as fiber bundles (spun or also called roving). By fiber bundles is to be understood advantageously a plurality of fibers, for example from 2 to 350,000. The fibers of the fiber bundles can be configured in their longitudinal course parallel to each other and / or twisted. By twisting, improved tensile force absorption can be achieved. It is also conceivable to wrap the fiber bundle at least one layer of fibers with additional fibers, thus improving the adhesion properties between textile reinforcement and concrete.

The concrete used for the flat precast concrete part according to the invention corresponds to DIN EN 206. Advantageously the concrete of the finished flat concrete parts with a maximum grain size of 16 mm has a grain size of 0.025 mm - 4.0mm in the range of about 36% -74% of the total grain composition, a grain size of> 4.0mm - 8.0mm in the range of about 14% - 24% of the composition of total grain, and a grain size of> 8.0 mm - 16.0 mm in the range of about 12% - 40% of the total grain composition.

Furthermore, a composition with a maximum grain size of 32.0 mm is also conceivable. In this sense, the concrete of the flat concrete finished pieces has a grain size of 0.025 mm - 4.0 mm in the range of approximately 23% - 65% of the total grain composition, a grain size of> 4, 0mm -8.0mm in the range of about 12% -15% of the total grain composition, a grain size of> 8.0mm -16.0mm in the range of about 12% -24% of the grain composition total, and a grain size of> 16.0mm - 32.0mm in the range of about 11% - 38% of the total grain composition.

An essential point of the flat precast concrete part resides in that the textile reinforcement can have arcs of fibers that protrude at least partially outside the precast concrete part.

The textile reinforcement, as described above, is arranged flat within the precast concrete part, although this is not to be understood as being limited to an individual textile reinforcement. Depending on the function of the precast concrete part and its material thickness, it is advantageous to provide several textile reinforcements. These can be arranged in the precast concrete part afterwards, for example, spaced parallel to each other. This is advantageous since the textile reinforcements arranged in the flat concrete precast part reinforce it, on the one hand, in a flat manner, and furthermore, through the arches of fibers that protrude at least partially on the sides above a part. of the precast concrete part, allow other functional connections, for example with a composite material strip, to also transfer the absorbed force from the precast concrete part and deflect them from the textile reinforcement. Consequently, the textile reinforcement is mainly internal, advantageously arranged essentially parallel to the base and / or cover surface of the flat precast concrete part. Depending on the configuration, it is conceivable to configure the fiber arches in such a way that they protrude above the edge of the base or roof surface, which is produced by an asymmetrical shape of the precast concrete part. The fiber arches are configured continuously from at least one fiber bundle and have at least one continuous opening.

In a further advantageous embodiment, the textile reinforcement is formed by at least a first fiber layer and a second fiber layer, wherein the first fiber layer is formed from at least one transverse fiber bundle, which is arranged in a meander-shaped course in a first direction, and where the The second fiber layer is configured from a plurality of longitudinal fiber bundles arranged spaced apart from each other and the transverse fiber bundles are arranged in a direction other than the first direction, wherein the at least one transverse fiber bundle of the The first fiber layer is configured at least in areas facing the second fiber layer as laterally projecting fiber arcs. By arranging both layers of fibers, the network structure of the textile reinforcement is produced. Advantageously, both layers of fibers at their intersection points are bonded and fixed to each other, for example interlaced, knotted or glued with at least one plastic.

In addition to this flat net structure, the textile reinforcement has fiber arches on at least two sides. These can be configured alternating and / or continuous. The fiber arches during the reinforcement of the precast concrete part are arranged in such a way that they protrude at least partially, advantageously completely, from the cured precast concrete part and are configured without concrete. The net-like main piece of the textile reinforcement is then poured into the precast concrete piece and causes its flat reinforcement. On the other hand, the laterally projecting arches of fibers serve advantageously as connecting elements, with which other functional connections can be closed.

In a further advantageous embodiment, the textile reinforcement has a plurality of non-metallic fibers. In this sense, they are advantageously high-strength fibers with a high modulus of elasticity, advantageously in the range of 70,000 to 320,000 MPa. The fibers can be in the form of mineral fibers, such as, for example, glass fibers or wollastonite fibers. Furthermore, it is also conceivable to configure the fibers as carbon fibers, polymer fibers, polyolefin fibers, aramid fibers, basalt fibers, (non) oxidic ceramic fibers, such as, for example, composed of aluminum oxide or carbon carbide. silicon, natural fibers. Naturally this is not to be understood in a limiting sense, so that it is also conceivable to configure the respective fiber bundles with various types of the exposed high-strength fibers with high modulus of elasticity, for example with a mixture of aramid fibers-fibers of carbon or a mixture of glass fibers-carbon fibers, the percentage of carbon fibers being advantageously selected in the range of 5 percent by weight to 45 percent by weight.

In the simplest case the different types of fiber in a respective fiber bundle are statistically distributed in the fiber bundle. However, also for improved stability and tensile strength a controlled arrangement of a controlled arrangement of a core-shell structure has proven to be advantageous. In this case, the carbon fibers are configured as a core, which is surrounded by a second type of fiber as a cladding.

In a further advantageous embodiment of the precast concrete part, each fiber arch of the textile reinforcement has at least two fastening zones, in which the fiber arches of the first fiber layer are fixedly connected with fiber bundles longitudinal of the second fiber layer. This is advantageous for the individual determination and fixation of the size, diameter and / or contour of the fiber arches. By additional fixation in the clamping areas, the mesh structure of the textile reinforcement is reinforced and the absorption of force is improved. The clamping can be carried out, for example, by additional binder fibers, which fix the fiber arches at their intersection points with the second fiber layer to it. As an alternative or additionally, fixing by adhesion or coating, for example with a plastic and / or a silane-containing adhesive, is also conceivable. In order to improve the corrosion stability, the entire textile reinforcement can also be configured with such a coating. Advantageously, thermoplastic resins, such as, for example, epoxy resin or polyurethane resin, are used for the plastic coating. In addition, solvent-free or solvent-borne polymer dispersions can also be used.

Advantageously, the fiber arches of the textile reinforcement are configured as continuous loops. These loops can be produced particularly easily and simply by means of the meandering arrangement of the transverse fiber bundles. The continuous configuration ensures that with additional components, stable functional connections can also be established, in order to again evacuate the forces absorbed by it from the textile reinforcement.

In a further advantageous embodiment, the fiber bows are U-shaped and / or drop-shaped. The U-shaped configuration of the fiber arches represents the simplest embodiment. In this sense, each loop has two branches, with which it is fixed in the clamping areas on the adjacent longitudinal fiber bundle. Both branches are distanced from each other through a curved shaped base. Advantageously, the base and the longitudinal fiber bundle are arranged facing each other and are also spaced from one another by means of an opening. In particular, both branches are configured symmetrically to one another. For the best tensile load capacity, the branch length to base ratio is selected in the ratio of 1.5: 1; 2: 1; 2.5: 1; 3: 1; 3.5: 1; 4: 1; 4.5: 1; 5: 1; 5.5: 1; or 6: 1. Therefore the branch-base relationship also establishes the size of the opening, more advantageously its internal diameter. However, this is not to be understood in a delimiting sense, since branch-to-base relationships of 1: 1.5 are also conceivable; 1: 2; 1: 2.5; 1: 3; 1: 3.5; 1: 4; 1: 4.5; 1: 5; 1: 5.5 or 1: 6. All these relationships have in common that they configure a sufficiently large opening between branches, base and bundle of longitudinal fibers. Sizes for the minimum inside diameter of the U-shaped loops in the range of 0.5 to 12 cm have been found to be especially advantageous.

Also a geometry of the loops in the form of a drop is advantageous for a tensile load capacity and for avoiding cracks in the concreted state. In this case, the clamping areas of the respective fiber arch are arranged closer to each other, than is the case in the U-shaped design of the loops. The configuration of the loops as a double loop, for example in the form of a vertical "8" by crossing and fixing additional fiber bundles to avoid cracking and absorption of force, has also been found to be advantageous.

Advantageously, the at least one transverse fiber bundle, which has a meandering course, is configured as a continuous fiber bundle. If only one transverse fiber bundle is provided for the configuration of the fiber arches, then its meandering course always involves at least one defect point between two fiber arches. In the concreted state this means that, for example, a fiber arch is configured on the left side of the precast concrete part and at the same height, on the opposite right side it represents a defective point and vice versa. Consequently, an alternating succession of laterally protruding fiber arcs is produced.

If particularly high requirements are placed on the reinforcement, then a further advantageous embodiment of the precast concrete part provides a textile reinforcement, which instead of the defective points presents additional fiber arches, so that continuous rows of fibers are produced. fiber bows. For this purpose, a third additional fiber layer is provided, which is also arranged in a meander shape, but opposite the first fiber layer. By the opposite arrangement of the third fiber layer, which is also composed of fibers and / or at least one fiber bundle, the above-described defect points are filled in and a continuous row arrangement of fiber arcs is formed. Advantageously also these additional fiber arches of the third fiber row are in turn fixedly connected with longitudinal fiber bundles of the second fiber layer, for example glued, linked or knotted.

Consequently, the textile reinforcement described in this case, thanks to its net structure, as well as thanks to the special arrangement and / or configuration of the fiber arches, is perfectly adequate to completely absorb the tensile forces acting on the piece. precast concrete. The biaxial textile reinforcement described in this case is configured as the final anchor.

According to the present invention, the composite component for the construction of parking lots has at least one flat precast concrete part, as described above, wherein the concrete precast part has at least one net-type textile reinforcement, arranged at least partially inside the precast concrete part, wherein the textile reinforcement has arches of fibers that protrude at least partially outside the precast concrete part. Furthermore, the composite component has at least one beam element for accommodating the at least one precast concrete part. The beam element is arranged below the flat concrete precast, so that it is designed to rest on the beam element. The beam element serves for load evacuation, as well as for the evacuation of additional force from tensile stress forces, to prevent cracks and damage to the flat precast concrete part. In the simplest case, the beam element is configured as a C-shaped steel or concrete beam or as a double-T beam. Advantageously, the beam element is configured in such a way that two flat concrete finished pieces They are configured so that they can rest on it.

In particular, the textile reinforcement has the function of completely absorbing the internal tensile stresses acting on the precast concrete part.

An essential point of the composite component consists in that, in addition, it has a composite material strip to expel the forces absorbed by the at least one textile reinforcement, wherein the composite material strip and textile reinforcement are functionally connected to each other by means of grouting for bonding. transmission of force. By means of this functional connection between the composite strip and the textile reinforcement, it can be ensured that the tensile forces absorbed by the textile reinforcement are transferred to the composite material strip from the precast concrete part by pouring and consequently through the functional connection with the composite batten is removed from it completely towards the beam element. For this reason, the cooperation in drag form of the precast concrete part and beam called composite component is formed (beam and precast concrete part are adhered in force drag).

Advantageously, the composite strip is configured continuously, so that both an absorption of tensile force from the textile reinforcement which can be distributed better is allowed as well as a significantly improved evacuation of force towards the connecting element. beam. Furthermore, also the service life of composite slats of this type is significantly increased, since their material stress and force evacuation and force evacuation are clearly reduced by the fixed and / or one-piece configuration with the beam element. Consequently, the entire composite component becomes more stable and the formation of cracks in the concrete is minimized.

In a further advantageous embodiment, the functional connection between the composite strip and the textile reinforcement is configured in such a way that the textile reinforcement of the precast concrete part has arches of fibers. which protrude at least partially outward through the concrete precast, which are guided at least partially, advantageously completely, around the composite material strip. This is advantageous since by arranging the fiber arches, advantageously the projecting loops of the textile reinforcement, these can be guided at least partially over and / or around the composite material strip, so that there is therefore functional bonding (adherence). The fiber arches surround the composite strip continuously, so that the absorption of force by the composite material strip takes place more continuously and safely than is known from the state of the art. Break points of the composite batten are also avoided, so that a long-lasting and reliable transfer of force is always carried out through the composite batten to the beam element. Furthermore, in particular in the case of long beam element lengths or curved beam elements, it is advantageous to arrange several composite and / or interrupted slats, which are arranged close to one another, for example.

According to the invention, the at least one strip of composite material has a first lower section, which with the at least one beam element forms a common contact surface and / or is fixedly and / or connected in one piece with the at least one beam element. This first lower section of the composite material strip represents the connecting piece of the composite material strip with the support element. In the simplest case, the composite strip is made of sheet steel and is fixedly welded to the at least one beam element. Material thicknesses of the composite slat in the range of 3mm to 20mm have been found to be advantageous. This ensures sufficient stability with a low space requirement. Furthermore, it is also conceivable that the composite strip is made of other metallic, ceramic or plastic materials. In addition to welding, it is also conceivable to bond or clinch additional components of the composite component described in this case.

In addition, however, it is also conceivable that composite beam and batten element are already designed and manufactured in one piece, so that welding seams or other fastening connections can be completely dispensed with. Advantageously, the first lower section of the composite material strip is configured as a stabilizing and force-transmitting base section. It can have a parallelepiped shape, a trapezoidal shape or similar geometric configurations. In particular, by means of a large contact surface of the composite batten and common beam element, a good transfer of base section force to the beam element is achieved. The plinth section is configured continuously.

Additionally, according to the invention, the at least one strip of composite material has a second section arranged vertically offset from the first section for housing the textile reinforcement. Both sections make up the one-piece composite batten. The second section is therefore arranged above the first section and serves to accommodate the textile reinforcement, most advantageously the arches of fibers protruding from the textile reinforcement, which rise above the covering surface and / or or the base of the precast concrete part. Consequently, the corresponding functional connection can be successfully configured between the composite material strip and the textile reinforcement for the elimination of tensile stresses outside the precast concrete part.

For this, in addition according to the invention it has proved to be particularly advantageous when the second upper section of the composite material strip has a plurality of projections. In the simplest case, the projections are configured as elevations, through which the arcs of fibers of the textile reinforcement, more advantageously the loops of the textile reinforcement, can be translated and / or positioned above and by means of the projections and / or or corresponding protrusions can be kept in a translated and / or overhead position and a functional connection is consequently configured.

It has been found to be especially advantageous when the fiber bows are configured such that they can be translated through the composite batten and / or placed on top. In the simplest embodiment, the fiber arches of the textile reinforcement are advantageously configured in size and / or contour. Each fiber arch is advantageously designed as a loop and therefore has at least one continuous opening. In this case, the diameter of the opening of each of the fiber arches is configured larger than the external diameter of the projections, so that each fiber arch can be guided and / or loosely positioned through the respective projection.

In a further embodiment it is conceivable to configure the fiber arches even in their variable size and / or contours, in such a way that the fiber arches with their respective aperture can be positioned at least partially overhead through the composite material strip and therefore they can be attached to it. The term "can be placed overhead" is to be understood advantageously as the narrow guiding of a fiber arch along a projection, optionally also widening the fiber arch, so that the fiber arch is then held in the region of the decrease in material.

In the simplest embodiment, the projections are arranged vertically oriented. This ensures that fiber arches can be guided easily and quickly through the projections on site, without requiring special equipment or high force requirements. Consequently, the precast concrete part is particularly easy to place and then cast as a composite component.

In a further advantageous embodiment, the projections in a first zone have a smaller diameter than in a second end zone. As already stated above, the projections advantageously extend vertically upwards, and are therefore arranged with their first end fixed in the lower section of the composite material slat or formed in one piece with it. The second, free end of the projections is arranged facing each other. In order to now achieve an improved fixation of the fiber arches, more advantageously, of the loops, the projections have at least a decrease in material in a first zone, which is advantageously shaped by the perimeter. For this reason, after the arches of fibers protruding at least partially on the sides of the precast concrete part have been successfully placed above and / or translated, they can no longer slide backwards or separate from the projections in such a way. involuntary.

As the shape of the projections, it has proven to be particularly advantageous when the projections are mushroom-shaped. This is advantageous since the material decrease is then configured below an enlarged clearance of the projection. The free end is rounded and / or shaped with rounded edges, so that easy fitting and / or placement over the fiber arches on the projections is allowed. The material taper arranged below the rounded free end of the projections serves for the corresponding fixing of the fiber arches to the projections of the composite material strip. Therefore a downward sliding or separation of the fiber arches from the projections is prevented.

The projections are configured undulating in the vertical direction. Advantageously, the undulation is designed as an S-curve course. This S-curve course of the projections in the vertical direction protects the material in particular, since the rounded, undulating course prevents fiber breaks during assembly. However, this S-curve course offers sufficient functional connection for the evacuation of forces from the textile reinforcement to the composite strip.

In a further advantageous embodiment, at least one fiber arch of the textile reinforcement is associated with each projection. This is advantageous since the best possible force evacuation is thereby made possible under the best possible functional connection. This, however, is not to be understood in a delimiting sense, so that it is also conceivable, in particular in three-dimensional textile reinforcements, that more than one fiber arch are associated with each projection, for example two or three fiber arches arranged one on top of the other. . Therefore the functional connection and the transmission of force can be more noticeably strengthened and reduced, or even a crack formation prevented.

The flat precast concrete part described in this case advantageously has on at least two sides the projecting arches of fibers formed by the textile reinforcement. The composite batten is firmly configured with the beam and / or one-piece element and has the projections extending vertically upward.

On the work, the beam element with a composite material strip arranged on it is now initially envisaged. On the girder element, for example a steel girder or the concrete girder, at least one precast concrete part is supported in the middle. In particular, in this regard, it is necessary that the protruding fiber arches of the textile reinforcement are guided through the protrusions of the composite material strip, and consequently, a functional connection is configured. Subsequently, the area of composite batten and fiber arches can be filled in or else an additional precast concrete part, as just described, is supported by the other free half of the beam element and the fiber arches are arranged around of the projections. Advantageously, then both finished concrete pieces together with the composite material batten and / or the beam element are filled and joined by force dragging.

In a further advantageous embodiment, the fiber arches of the textile reinforcement are arranged in recesses in the precast concrete part. In addition to the simple exemplary embodiment that only the fiber arches protrude at the sides of the precast concrete part, it has proven to be particularly advantageous for the construction of car parks to arrange the fiber arches in recesses of the precast concrete part. . Advantageously, the recesses are open flat on one side, advantageously on the lower side. Consequently, the overlay and / or translation of the fiber arches from above towards the underlying composite batten can always be ensured.

In this special embodiment, the base surface of the precast concrete part, which is supported at least partially on the beam element, is therefore shaped shorter in sections than the roof surface, which covers and covers the surface of base in the area of the recesses. Exactly in the free space produced by this, the arches of fibers are arranged protruding. Depending on the force absorption, it is conceivable that the precast concrete part has at least two recesses, each recess extending as a lateral channel with arches of fibers arranged in it. This is of course not to be understood in a delimiting sense, so that it is also conceivable that at least projecting fiber arches are arranged on the front sides of the precast concrete part as well. These can also be provided in corresponding recesses.

It has been found to be particularly advantageous if the recesses in the grouting and / or filling with liquid concrete or other filler material, for example plastic or asphalt, are designed with self-ventilation. To this end, the recesses have at least one oblique plane, which is designed to rise towards the free edge of the precast concrete part. For the configuration of the composite part, it is necessary to fill the recesses of the precast concrete part, for example with liquid concrete, to create the necessary drag force between the precast concrete part and the beam element.

The filler material is loaded into the recesses, so these are sealed from below by the beam element. The filler material fills the recess from the bottom up and thus also connects the composite strip with the fiber bows. The oblique plane forms the covering region of the respective recess, so that the liquid filling material is slowly guided along the oblique plane and the recess is filled without air inclusions. Consequently, on filling, excess air volume may rise along the oblique plane and be evacuated successfully.

Advantageously, the oblique plane of the recess has a slope in the range of 0.5 ° to 10 °, more advantageously in the range of 3 ° to 6 °. For filling the recesses, lateral formwork elements can also be provided, which limit the flow of filling material and allow a flush finish of the composite component.

For this, already in the manufacture of the precast concrete part, formwork elements and / or molding parts are provided, which are filled with liquid concrete, to configure the precast concrete part correspondingly formed with recesses and oblique plane configured in this.

Furthermore, it is advantageous to configure recesses in the shape of a trapezoid, extending outwards or inwards. As a result, filling can be carried out significantly faster. Depending on its configuration, furthermore, the forces acting on the composite component can be introduced, or conversely eliminated, from the composite batten towards the composite component, for example a precast concrete part element. In a further advantageous embodiment, the textile reinforcement is designed as a high-performance textile reinforcement, which is particularly suitable for the construction of car parks.

Furthermore, it has been found to be advantageous to use the composite component described in this case as a concrete wall plate, and / or concrete ceiling plate in the construction of parking lots, building construction, bridge construction or civil engineering and building in general. . Furthermore, a use of the precast concrete part as a component of concrete wall plates and / or roof plates is also advantageous in the construction of parking lots, building construction, bridge construction or civil engineering and building in general. Convenient aspects emerge from the following description associated with the drawing.

In this sense, they show:

Figure 1 a side sectional view of a part of a composite component;

Figure 2 is a schematic top view of a precast concrete part with a loop of the textile reinforcement, a strip of composite material and a notch; and

Figure 3 an additional side sectional view of a composite component.

Figure 1 shows a side sectional view of a composite component 1 assembled, but not yet final filled. The precast concrete part 4 is designed to rest on the beam element 2. The beam element 2 is designed in the simplest case as a zero beam or concrete beam.

On the beam element 2 in its longitudinal extension the composite material strip 6 is fixedly arranged, for example welded with a weld bead 29 or is already provided in one piece with the beam element 2. The composite material strip 6 It has a first, lower section 8, which is designed to be firmly connected to the beam element 2. This lower section 8 is designed as a continuous base section and serves for the transmission of force to the beam element 2.

In the vertical direction, offset from the first, lower section 8, the composite material strip 6 has a second upper section 10, which has a plurality of projections 12 extending vertically upwards. The projections 12 are arranged spaced from each other, advantageously equidistant to allow uniform force absorption.

Furthermore, the spacing of the projections 12 from one another is sufficient such that the arches of fibers 14 of the textile reinforcement can be guided between the projections 12. So that the arches of fibers 14 can also establish a connection functional corresponding to the projections 12, the projections 12 have a material decrease 16, to which a free end 18 enlarged in diameter is attached. In a particularly advantageous manner, this side view shows the undulating course 20 of the projections, advantageously in the form of an S. For this reason, the arches of fibers 14 can be guided particularly easily through the material fattening of the upper free end 18, to later, below this free end 18 in the decrease of material 16 after filling, for example with liquid concrete or mortar to establish the functional connection and to maintain it sufficiently. Advantageously, the arches of fibers 14 hook the free ends 18 underneath. For the configuration of the finished composite component 1, advantageously to configure the force drag between the composite material strip and fiber arches 14, the recesses 26 are filled with liquid filler material, for example concrete, which is then cured and allows drag force between the composite strip 6 and the precast concrete part 4 or the fiber arches 14. Only by means of this filling and the force-drag connection that is thereby formed between the precast concrete part 4 and the beam 2 do the forces in the Precast concrete part 4 and beam 2 through the composite batten 6 and loops 14 are brought to internal equilibrium and inserted into the textile reinforcement 24 or removed. As a result, cracks and damage to the precast concrete part 4 and consequently also to the entire building can be avoided almost completely.

In figure 2 a corresponding schematic top view of a composite component 1 is shown, in which the same construction parts are indicated as in figure 1 with the same references.

In this case in an enlarged, schematic view, it can be distinguished that the fiber arches 14 of the textile reinforcement 24 completely surround the composite material strip 6 or its projections 12. For a simplified representation only a fiber arch 14 is shown, which is disposed at a sufficient distance from the projection 12, to be loosely guided therethrough. This is of course just a realization example. Furthermore, it is also conceivable that the fiber arch 14 runs directly along the projection 12 and forms a common, surrounding contact surface therewith (not shown).

Furthermore, in this exemplary embodiment, it can also be seen that the fiber arches 14 are arranged in recesses 26, which must then be filled or filled, for example with liquid concrete, for the force transfer. The recesses 26 are designed as interrupted in this embodiment, so that only one fiber arch 14 is arranged in each recess 26. The shape of the recesses 26 is trapezoidal and extends outwardly. This, in addition to the oblique cover plane of the recess (not shown), is for self-ventilation of the recess 26, which is further promoted by the trapezoidal shape and air bubbles can more easily escape from the filling material. Furthermore, the compression forces due to the advantageous trapezoidal configuration of the recess resulting from the effect of the form-drag connection of both construction parts, namely precast concrete part 4 and beam 2, can be better introduced or eliminated from beam 2 towards the precast concrete part.

Finally, figure 3 also shows a schematic side view of a part of a composite component 1, where also in this case the same references correspond to the same construction parts and are not explained again.

In this sense it can be seen that on the beam element 2 are fixedly arranged at least one, in this case two strips of compound 6, welded for example with a weld bead 29. Around the joining compound strips 6 or their second upper section 10 the fiber arches are guided. In this exemplary embodiment, the precast concrete part 4 has two textile reinforcements 24, which are advantageously arranged in parallel and spaced from one another in the precast concrete part 4 in a flat manner. In particular, in figure 3 it can be seen that only a textile reinforcement 24 establishes a functional connection with the composite material strip 6, while the additional textile reinforcement 24 is arranged above the first textile reinforcement 24 completely inside the piece. precast concrete 4 and serves for simple reinforcement of concrete.

So that the shape dragging can now also be carried out successfully, on site, on site, initially the fiber arches 14 are guided over the projections 12 of the composite material strip 6 and / or positioned in the reverse direction. In order to now make a force entrainment possible, this functional connection must be correspondingly filled with, for example, liquid concrete. This can be done, for example, by means of a formwork element that laterally limits the recess 26 (not shown).

As an alternative, it is also conceivable to arrange in axial symmetry with respect to the first precast concrete part 4 shown in this case, an additional precast concrete part 4 in the free half of the beam element 2. Advantageously, then the recesses 26 of both finished parts of concrete 4 arranged in a joint are arranged facing each other, so that a filling with liquid concrete from above can be carried out through the joint and the recesses 26 can be filled with liquid concrete in correspondence with self-ventilation. Therefore, the desired force drag is configured.

If the free space of the recess 26, in which the projections 12 as well as the fiber arches 24 are arranged, is now filled with liquid concrete, thus advantageously along the oblique plane 28 air can be evacuated from the recess 26 outwards , so that unwanted air bubbles are prevented from forming in the concrete. By Consequently, a clearly improved force drag can be created for the absorption of compressive forces.

All the features disclosed in the application documents are claimed as essential to the invention, provided that they are novel individually or in combination with respect to the state of the art.

List of references

1 Composite component

2 Beam element

4 Precast concrete part

6 Joining strip

8 First section, lower

10 Second upper section

12 outgoing

14 Fiber bow

16 Material reduction

18 Free end

20 S-curve course

22 Molded part

24 Textile armor

26 Cut-out

28 Oblique plane

29 Joint between composite strip and beam element, in this case weld seam

Claims (8)

1. Composite component (1) for the construction of car parks: - with a flat precast concrete part (4), - having at least one textile reinforcement (24) of the net type, arranged at least partially inside the finished piece of concrete (4), - where the textile reinforcement (24) has arches of fibers (14), which protrude at least partially out of the precast concrete part (4), - with a beam element (2) to house the at least one precast concrete part (4), - with at least one strip of composite material (6) to expel the forces absorbed by the at least one textile reinforcement ( 24), where the composite material strip (6) and the textile reinforcement (24) are functionally connected to each other for the transmission of force, - wherein the at least one strip of composite material (6) has a first lower section (8), which with the at least one beam element (2) forms a common contact surface and / or is fixedly connected to it. minus one beam element (2), - because the at least one strip of composite material (6) has a second section (10), arranged vertically offset from the first section (8) for housing the textile reinforcement (24), - because the second upper section (10) of the composite material strip (6) has a plurality of projections (12), and is characterized in that - the projections (12) are configured in an undulating manner in the vertical direction. 2. Composite component according to claim 1, characterized by what the functional connection between the composite material strip (6) and the textile reinforcement (24) is configured in such a way that the textile reinforcement (24) has arches of fibers (14), which protrude at least partially outwards through the prefabricated part of concrete (4), which are guided at least partially around the composite material strip (6). 3. Composite component according to claims 1 or 2, characterized by what the projections (12) are arranged vertically oriented. Composite component according to one of claims 1 to 3, characterized by what The projections (12) in a first zone have a smaller diameter than in a second free end zone (18). 5. Composite component according to claim 4, characterized by what the projections (12) are mushroom shaped. Composite component according to one of claims 1 to 5, characterized by what At least one fiber arch (14) of the textile reinforcement (24) is associated with each projection (12). Composite component according to one of claims 1 to 6, characterized by what The fiber arches (14) of the textile reinforcement (24) are arranged in recesses (26) of the precast concrete part (4). 8. Composite component according to claim 7, characterized by what the recesses (26) in the joint are configured with self-ventilation.