Connection device and method for producing same

Abstract

The invention relates to a connection device, having a receiving component, in particular a wooden body, which has at least one elongate retaining recess which is arranged so as to run elongately substantially perpendicularly to a surface of the receiving component, and having an attached component comprising substantially a concrete element, and having a composite panel means which has a plurality of elongate, in particular rounded, openings, wherein the openings are higher than they are long, in particular have a length <= approx. 0.9 times the height, wherein the arrangement is provided such that the openings in the composite panel means in a longitudinal direction are in particular offset in the height direction, wherein the composite panel means is introduced into the retaining recess in the wood body down to a predefined depth and is arranged correspondingly down to a predefined depth in the concrete element, wherein the depth for incorporating the composite panel means in the concrete element is greater than the depth for incorporating the composite panel means in the wood body, in particular approx. 25% greater.

Description

Connecting device and method for manufacturing The invention relates to a connecting device, comprising a receiving component, in particular a wooden body, according to the preamble of claim 1 and a method for manufacturing a connecting device according to the preamble of claim 10. Connection devices between receiving components in the form of wooden bodies and a concrete element are known. A disadvantage is that, due to differing coefficients of thermal expansion of the joined materials and differing load-bearing properties, the connection is at risk of loosening. In particular, wooden bodies in the form of sawn or finished goods tend to undergo cross-sectional changes due to climate fluctuations. The object of the present invention is therefore to provide a safe and reliable connection device, even under, for example, different material properties. The problem is solved by a connecting device comprising a receiving component, in particular a wooden body, which has at least one elongated retaining recess that is arranged elongately, essentially perpendicular to a surface of the receiving component, and an attached component comprising essentially a concrete element, and a composite panel element having a plurality of elongated, in particular rounded, openings, wherein the openings have a height greater than their length, in particular a length <= 0.9 * height, wherein the arrangement is provided such that the openings in the composite panel element are offset in a longitudinal direction, in particular in the vertical direction, wherein the composite panel element is inserted into the retaining recess in the wooden body to a predetermined depth and is correspondingly arranged to a predetermined depth in the concrete element.where the depth for embedding the composite panel material in the concrete element is greater than the depth for embedding the composite panel material in the wooden body, in particular 25% greater. The invention provides a very stiff yet ductile connection, particularly between wood and concrete. The connection device can be manufactured quickly and allows for a lighter composite structure due to its reduced embedment in the wood. The tensile stiffness in the vertical direction is greater than in the longitudinal direction, thus generating a clamping force within the concrete element. This greater embedment height in the concrete element results in a stronger bond between the composite panel and the concrete than between the wood and the wood. To further enhance this strong bond, the composite panel end can be provided with a chamfer to improve anchorage in the concrete. The invention enables a high-performance connection, particularly more efficient material utilization of the composite panel, improved shear stiffness and load-bearing capacity, and reliable failure prediction.The connection allows for more efficient use of the grout, especially since the anchorage in the wood is less than in the concrete. This is because the openings in the composite panel are not oval but essentially taller than they are long. The roughness of the openings in the composite panel's core is advantageous, further enhancing the bond. This also improves the load-bearing capacity and ductility of the composite panel. It is advantageous if the height of the openings is >= approximately 0.1* height of the composite panel center, in particular approximately 8 - 10 mm. It is advantageous if the length of the composite panel element is at least approximately twice the height, in particular if the height is >= approximately 90 mm. It is advantageous if the area of ​​the openings comprises approximately 50% of the total surface area of ​​the composite panel. This increases the bonding effect and allows for ideal ductility of the composite panel. It is advantageous if the depth of the elongated retaining recess for integrating the composite panel material into the wooden body is approximately 40 mm. It is advantageous if the thickness of the composite panel material is approximately 2-3 mm. It is advantageous if several composite plate elements are inserted into the retaining recess in the wooden body, in particular if two and / or more composite plate elements are arranged in parallel retaining recesses, so that the composite plate elements in the concrete element are at least slightly interlocked. Advantageously, at least composite plate elements are embedded in a retaining recess in the wood and arranged slightly interlocked in the concrete to avoid a predetermined breaking point, i.e., a crack in the concrete element. For better bonding, it is advantageous if the composite plate elements are not placed in a line. It is advantageous if the composite panel material in the concrete element has a chamfer at one end. It is advantageous if the composite plate material is fixed in the receiving component with a bonding compound, in particular a potting compound, in particular a lignin-based adhesive, in particular the composite plate material has a passage for filling bonding compound into a space, in particular into a deepest area of ​​the elongated retaining recess, wherein the bonding compound is to be filled before and / or after the insertion of the composite plate material into the elongated retaining recess of the receiving component. The intermediate layer at the interface between the composite material and the composite compound allows for decoupling of the adjacent materials without affecting their load-bearing capacity. This permits changes in the shape of the receiving component, for example, a wooden body, without significantly weakening the mechanical bond between the composite body and the composite compound. Simultaneously, this decoupling allows for changes in the cross-sectional area of ​​the composite and wooden body unit, achieved through adhesion of the composite compound to the wood. This ensures a reliable and long-lasting connection, even without an adhesive bond between the composite compound and the composite body. The intermediate layer at least partially eliminates the mechanical bond between the composite compound and the composite body.This shifts the center of gravity of the composite body deeper into the wood, thus reducing the risk of splitting the wood material. The openings create a mechanical interlocking or doweling in the form of a dowel-like retaining bridge between the composite panel material and the composite compound, and conversely, adhesion between the composite compound and the wood body. The problem is further solved by a method for manufacturing a connecting device, comprising a receiving component, in particular a wooden body, into which at least one elongated retaining recess is provided, which is provided extending elongately, essentially perpendicular to a surface of the receiving component, wherein a component comprising essentially a concrete element is arranged on the receiving component, and a composite panel element is inserted, which has a plurality of elongated, in particular rounded, openings, wherein the openings have a greater height than length, in particular a length <= about 0.9 * height, wherein the arrangement is designed such that the openings in the composite panel element are offset in a longitudinal direction, in particular in the vertical direction.wherein the composite material is inserted into the retaining recess in the wooden body to a predetermined depth and correspondingly arranged to a predetermined depth in the concrete element, wherein the depth for embedding the composite material in the concrete element is greater than the depth for embedding the composite material in the wooden body, in particular about 25% greater. It is advantageous if the composite material is introduced through a passage into a space between the composite body and the retaining recess, wherein displaced air escapes from the space, in particular through an outlet. Manufacturing allows for faster production due to reduced embedding in wood and lighter composite structures. A sustainable bond is achieved through increased bonding efficiency, particularly through the use of lignin-based adhesives. Further features and advantages of the invention will become apparent from the claims and the following description, in which exemplary embodiments of the subject matter of the invention are explained in more detail in conjunction with the drawings. They show: Fig. 1 shows a connecting device according to the invention and Fig. 2 shows a composite panel material. Fig. 1 shows a connecting device 22 with an exemplary retaining recess 3 with a receiving component 1, in particular a wooden body 2, which has at least one elongated retaining recess 3, which is arranged elongately perpendicular to a surface 7 of the receiving component 1, and an attached component 4 comprising essentially a concrete element 5, and with a composite panel means 6, which has a plurality of elongated, in particular rounded, openings 8, wherein the openings 8 have a greater height 9 than length 10, as in Fig.2 shown, in particular a length 10 <= about 0.9 * height 9, wherein the arrangement is provided such that the openings 8 in the composite panel means 6 are offset in a longitudinal direction 17, in particular in the vertical direction 18, wherein the composite panel means 6 is inserted into the retaining recess 3 in the wooden body 2 to a predetermined depth 12 and correspondingly is arranged to a predetermined depth 13 in the concrete element 5, wherein the depth 13 for embedding the composite panel means 6 in the concrete element 5 is greater than the depth 12 for embedding the composite panel means 6 in the wooden body 2, in particular about 25% greater. Fig. 2 shows a composite panel means 6 according to the invention with offset openings 8, wherein the proportion of the area 19 of the openings 8 is about 50% of the large area 20 of the composite panel means 6. REFERENCE MARK LIST 1 component 2 wooden bodies 3 Retaining recess 4 components 5 concrete elements 6 Composite Panel Materials 7 Surface 8 Opening 9 Height Opening 10 Length Opening 11 Height composite panel medium 12 Depth of integration 13 Depth 14 Length composite panel medium 15 End 16 Composite mass 17 Longitudinal direction 18 Altitude 19 area 20 large area 21 Thickness 22 Connecting device

Claims

1. Connecting device (22), comprising a receiving component (1), in particular a wooden body (2) having at least one elongated retaining recess (3) extending elongately, substantially perpendicular to a surface (7) of the receiving component (1), and an attached component (4) comprising substantially a concrete element (5), and a composite panel means (6) having a plurality of elongate, in particular rounded, openings (8), wherein the openings (8) have a greater height (9) than length (10), in particular a length (10) <= approximately 0.9 * height (9), wherein the arrangement is provided such that the openings (8) in the composite panel means (6) are offset in a longitudinal direction (17), in particular in a vertical direction (18), wherein the composite panel means (6) is inserted into the retaining recess (3) in the wooden body (2) to a predetermined depth (12) and correspondingly to a predetermined depth (13) in the concrete element (5). is arranged, wherein the depth (13) for embedding the composite panel means (6) in the concrete element (5) is greater than the depth (12) for embedding the composite panel means (6) in the wooden body (2), in particular about 25% greater.

2. Connecting device according to claim 1, characterized in that the height (9) of the openings is >= approximately 0.1 * height (11) of the composite plate means (6), in particular approximately 8 - 10 mm3. Connecting device according to one of claims 1 to 2, characterized in that a length (14) of the composite plate means (6) is at least about twice as large as the height (11), in particular the height (11) is >= about 90 mm.

4. Connecting device according to one of claims 1 to 3, characterized in that the proportion of the area (19) of the openings (8) is approximately 50% of the large area (20) of the composite plate means (6).

5. Connecting device according to one of claims 1 to 4, characterized in that the depth (12) of the elongated retaining recess (3) for integrating the composite panel means (6) into the wooden body (2) is approximately 40 mm.

6. Connecting device according to one of claims 1 to 5, characterized in that the thickness (21) of the composite plate means (6) is approximately 2-3 mm.

7. Connecting device according to one of claims 1 to 6, characterized in that several composite plate means (6) are inserted into the retaining recess (3) in the wooden body (2), in particular two and / or more composite plate means (6) are arranged in parallel retaining recesses (3) so that the composite plate means (6) are arranged at least slightly interlocked in the concrete element (5).

8. Connecting device according to one of claims 1 to 7, characterized in that the composite plate means (6) has a chamfer at one end (15) in the concrete element (5).

9. Connecting device according to one of claims 1 to 8, characterized in that the composite plate means (6) is fixed in the receiving component (1) with a composite compound (16), in particular a potting compound, in particular a lignin-based adhesive, in particular the composite plate means (6) has a passage for filling composite compound (16) into an intermediate space, in particular into a deepest area of ​​the elongated retaining recess (3), wherein the composite compound (16) is to be filled before and / or after the insertion of the composite plate means (6) into the elongated retaining recess (3) of the receiving component (1).

10. Method for manufacturing a connecting device (22) comprising a receiving component (1), in particular a wooden body (2), into which at least one elongated retaining recess (3) is provided, the recess being provided extending elongately, substantially perpendicular to a surface (7) of the receiving component (1), wherein a component (4) comprising substantially a concrete element (5) is arranged against the receiving component (1), and a composite panel element (6) is inserted, the composite panel element having a plurality of elongated, in particular rounded, openings (8), the openings (8) having a greater height (9) than length (10), in particular a length (10) ≤ approximately 0.9 * height (9), the arrangement being designed such that the openings (8) in the composite panel element (6) are offset in a longitudinal direction (17), in particular in a vertical direction (18), the composite panel element (6) being inserted into the retaining recess (3) in the wooden body (2) to a predetermined depth (12). and is arranged correspondingly to a predetermined depth (13) in the concrete element (5), wherein the depth (13) for embedding the composite panel means (6) in the concrete element (5) is greater than the depth (12) for embedding the composite panel means (6) in the wooden body (2), in particular about 25% greater.

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