Structural element for thermal insulation

Abstract

A structural element for thermal insulation between two building parts, particularly between a building (B) and a projecting external part (A), including an insulating body (2) to be arranged between the two building parts and including reinforcement elements in the form of at least tensile reinforcement elements (3), which in the installed state of the structural element (1) extend through it essentially horizontally and perpendicularly in reference to the essentially horizontal longitudinal extension of the insulating body, and respectively project in the horizontal direction beyond the insulating body and here can be connected to at least one (B) of the two building parts preferably made from concrete, with the tensile reinforcement elements (3) comprising an anchoring element (6, 16, 26, 36) in an area of at least one building part (B) surrounding its radial exterior, with the anchoring element at least including an anchoring bushing (6a, 16a, 26a, 36a) made from a concrete material and a profiling (6b, 16b, 26b, 36b), provided at the radial exterior of the anchoring bushing and projecting outwardly, particularly in the radial direction.

Claims

1. A structural element for thermal insulation between two building parts, the structural element comprising an insulating body (2) that is arrangeable between the two building parts and reinforcement elements including at least tensile reinforcement elements (3), which in an installed state of the structural element (1) extend through the insulating body (2), horizontally and perpendicularly to a horizontal longitudinal extension of the insulating body, and respectively project in a horizontal direction in reference to the insulating body and are connectable to at least one of the two building parts, with the tensile reinforcement elements (3) comprising an anchoring element (6, 16, 26, 36) surrounding a radial exterior thereof configured to be in proximity to the at least one of the two building parts, the anchoring element (6, 16, 26, 36) comprises at least one anchoring bushing (6a, 16a, 26a, 36a) composed of a concrete material and the anchoring element (6, 16, 26, 36) includes a profiling (6b, 16b, 26b, 36b) located on an outside thereof that is positioned on a radial exterior of the anchoring bushing, and configured to transfer a load between the tensile reinforcement element and one of the two building parts.

2. The structural element for thermal insulation according to claim 1, wherein the profiling (16b, 36b) comprises ribs that extend at least over a portion of a perimeter of the anchoring bushing (16a, 36a).

3. The structural element for thermal insulation according to claim 1, wherein the profiling (6b, 16b, 26b, 36b) extends only over an axial portion of the anchoring bushing (6a, 16a, 26a, 36a).

4. The structural element for thermal insulation according to claim 1, wherein the anchoring bushing (6a, 16a, 26a, 36a) is formed with a smooth wall on a radial outer surface at an edge area near the joint.

5. The structural element for thermal insulation according to claim 1, wherein the anchoring bushing (6a, 16a, 26a) has a cylindrical casing area.

6. The structural element for thermal insulation according to claim 1, wherein an external diameter of the anchoring bushing (6, 16, 26, 36) has a diameter of at least 1.5 times and maximally 5 times with respect to an external diameter of the tensile reinforcement element (3).

7. The structural element for thermal insulation according to claim 1, wherein the anchoring bushing (6a, 16a, 26a, 36a) extends only in an area of an abutting one of the building parts (B) and not into a joint between the two building parts (A, B).

8. The structural element for thermal insulation according to claim 1, wherein the profiling (6b, 26b) comprises a rod-shaped or wire material, which is least partially immersed into a clear external diameter of the anchoring bushing (6a, 26a) and projects partially from the clear external diameter of the anchoring bushing in a radial direction.

9. The structural element for thermal insulation according to claim 1, wherein the profiling (16b, 36b) forms a serrated projection in reference to a longitudinal section, having facial areas extending in a radial direction adapted to face a joint between the two building parts, and flanks extending tilted in reference to the radial direction and adapted to face away from the joint between the two building parts (A, B).

10. The structural element for thermal insulation according to claim 1, further comprising a connection reinforcement element (8), which extends in a vertical plane and is formed as a rectangular-shaped loop, and the connection reinforcement element is arranged adjacent to the anchoring bushing (36a).

11. The structural element for thermal insulation according to claim 1, further comprising at least one of compressive elements (5) or shearing force elements (4).

12. The structural element for thermal insulation according to claim 1, wherein the anchoring bushing (6a, 16a, 26a, 36a) is made from at least one of a curing or setting concrete material.

13. The structural element for thermal insulation according to claim 12, wherein the at least one of the curing or setting concrete material comprises at least one of: a reduced thermal conductivity in reference to cast-on-site concrete, a cement-containing concrete material, a fiber-reinforced concrete material, a high-strength or ultra-high strength concrete, a concrete-resin mixture, or a concrete-reaction resin mixture.

14. The structural element for thermal insulation according to claim 1, wherein the tensile reinforcement element (3) and the anchoring bushing (6a, 16a, 26a, 36a) are connected to each other with at least one of a form-fitting, force-fitting, or material-to-material connection.

15. The structural element for thermal insulation according to claim 14, wherein the anchoring bushing (6a, 16a, 26a, 36a) is affixed to the tensile reinforcement element (3) by at least one of wrapping or casting the tensile reinforcement element (3) with a material of the anchoring bushing (6a, 16a, 26a, 36a).

16. A building structure comprising two building parts that are formed of concrete, and the structural element for thermal insulation according to claim 1 located between and structurally connecting the two building parts.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Additional features and advantages of the present invention are discernible from the following description of exemplary embodiments based on the drawings; which show:

(2) FIGS. 1A-1C a detail of a structural element for thermal insulation according to the invention in a schematic top view (in FIG. 1A), in a side view partially sectioned along the plane H-H of FIG. 1A (in FIG. 1B), and an enlarged detail of the area J of FIG. 1B (in FIG. 1C);

(3) FIGS. 2A-2C a detail of an alternative structural element for thermal insulation according to the invention in a schematic top view (FIG. 2A), in a side view partially sectioned along the plane G-G of FIG. 2A (FIG. 2B), and in an enlarged detail (FIG. 2C);

(4) FIGS. 3A-3E a detail of another structural element for thermal insulation according to the invention in a schematic top view (FIG. 3A), in a side view partially sectioned along the plane G-G of FIG. 3A (FIG. 3B), in a vertical section along the plane J-J of FIG. 3A (FIG. 3C), in an enlarged detail of the area K of FIG. 3C (FIG. 3d), and in an enlarged detail of the area H of FIG. 3A (FIG. 3E); and

(5) FIG. 4 a structural element for thermal insulation according to the invention in a partially sectioned side view.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(6) FIG. 4 shows a structural element for thermal insulation 1 with a cubic insulating body 2, which is provided to be arranged in a joint of building parts, remaining between two concrete building parts (not shown here, with their position only being indicated by the reference characters A, B), and distancing these two concrete building parts A, B from each other in a thermally insulating fashion. The insulating body 2 is assembled from several parts, in order to allow the installation of reinforcement elements in the form of tensile rods 3, in the form of shearing force rods 4, and in the form of compressive elements 5. The arrangement of the reinforcement elements occurs in a manner known and common in prior art, namely by arranging the tensile reinforcement elements 3 in the upper area of the insulating body 2, extending in the installed state in the horizontal direction and serving to transfer tensile force between the building parts A, B, connected to the structural element for thermal insulation, and for this purpose anchored in these building parts.

(7) In the lower section, the so-called pressure zone of the insulating body 2, the compressive elements 5 are arranged, namely also in the horizontal direction of extension, with them however abstaining from projecting beyond the insulating body 2. Finally, shearing force rods 4 are also provided which extend in the area of the insulating body 2 tilted in reference to the horizontal, and matching the stress to be compensated by the reinforcement elements of the structural element for thermal insulation, extend from the pressure zone at one side of the insulating body diagonally downwards into the pressure zone on the other side of the insulating body, in order to here extend angled upwards in the direction of the tensile zones and then, after another angling, parallel to the tensile reinforcement elements.

(8) The tensile reinforcement elements 3 are now essential for the present invention, one of which, namely the tensile rod 3 in FIG. 4, is discernible primarily at the left side of the insulating body 2, while this tensile rod is indicated in the proximity of the insulating body 2 and on the right side only schematically with its external contours. Here, at the right side of the insulating body 2 in the proximity of the building part B, the tensile rod 3 comprises an anchoring element 6 surrounding it at its radial exterior. This element has, on the one hand, an anchoring bushing 6a and on the other hand a profiling 6b, provided at the radial exterior of the anchoring bushing 6a and projecting radially towards the outside. While the anchoring bushing 6a is made from a high-strength concrete, which shows better thermal conductivity, i.e. better thermal insulating features than the tensile rod 3 made from stainless steel, the profiling 6b is made from wire loops, which are immersed with half of their cross-section, namely with their interior, in the anchoring bushing 6a, while they project with the other half of the cross-section, namely with their radial exterior, from the anchoring bushing 6a and this way enter into a positive bonding with the concrete of the building part B.

(9) Due to the fact that the tensile rod 3 is also provided with exterior ribs, the anchoring bushing 6a also enters into a positive connection with the tensile rod 3.

(10) It is discernible from the structural form according to FIG. 4 that the anchoring bushing 6a ends flush with the face of the building part B, facing the insulating body 2, and starting there it extends over a relatively short axial length L (measured perpendicular in reference to the longitudinal extension of the insulating body 2 in the horizontal direction) into the building part B. The tensile rod 3 also exhibits in the proximity of the building part B the same axial length L. If the tensile rod 3 extended into the building part B without the anchoring element 6 comprising the anchoring bushing 6a and the profiling 6b, it would require considerably greater axial length L, which can frequently lead to difficult installation problems.

(11) Alternative embodiments of an anchoring element for a structural element for thermal insulation according to the invention are shown schematically in FIGS. 1A-C, 2A-C, and 3A-E. Here, only one insulating body 2, a building part B abutting thereto, a tensile reinforcement element extending in the horizontal direction in the form of a tensile rod 3, and an anchoring element 16 (FIGS. 1A-C), 26 (FIGS. 2A-C), and/or 36 (FIGS. 3A-E) are shown.

(12) The anchoring element 16 according to FIGS. 1A-C comprises an anchoring bushing 16a with an integrated profiling 16b on its radial exterior, i.e. the profiling is made here not from a separate component, but is provided in the form of serrated ribs in the casing area of the anchoring bushing 16a. The profiling 16b begins here not directly at the front edge of the building part B, adjacent to the insulating body 2; rather the anchoring bushing 16a has first a smooth-walled casing area such that the profiling, entering into a positive connection with the concrete of the abutting building part B, begins only after 30% of the axial length L.

(13) As is discernible from the detail J of FIG. 1C, the anchoring bushing 16a shows at its end, facing the insulating body 2, on the radial interior a retrace and/or a recess 16c, which ensures that the tensile rod 3, when leaving the anchoring bushing and entering the insulating body, is not subjected to any abrupt change in stiffness of its radial anchoring, which would lead to material fatigue in this transitional area. By the recess 16c the exit area is slightly moved out of the bushing 16a in the axial direction into the building part B such that a rather continuous transition of stiffness is provided in the area from the bushing to the insulating body.

(14) The embodiment according to FIGS. 2A-C differs in reference thereto primarily such that the anchoring element 26, in addition to an anchoring bushing 26a, has on its radial exterior a profiling 26b, which is made from helically extending circumferential loops made from a wire material. As was already the case in the exemplary embodiment shown in FIG. 4, here too the hoops 26b are embedded partially in the anchoring bushing 26a and project with a second part beyond the anchoring bushing and/or its clear exterior diameter in the radial direction towards the outside in order to here enter into a positive bond with the concrete of the building part B.

(15) In the embodiments according to FIG. 4 an anchoring element 36 is used that shows an anchoring bushing 36a, which is very similar to the anchoring bushing 16a of FIGS. 1A-C, with the only difference that the anchoring bushing 36a comprises on its top a flattening 36d in the form of a segment of a circle, by which above the anchoring bushing more space can remain available for the concrete material of the building part B, here therefore the concrete coverage can be greater than is the case in a cylindrical exterior form of the anchoring bushing of prior art.

(16) FIG. 4 finally shows a loop-shaped structural reinforcement 8, which is made from a reinforcement rod arranged bent into a rectangular form and arranged essentially in a vertical plane. Here it is discernible that the area of the anchoring bushing 36a provided with the profiling 36b only extends in the axial direction behind the area in which the legs of the reinforcement 8 of the building part, extending in the vertical direction, overlaps the anchoring bushing 36a.

(17) In summary, the present invention offers the advantage to provide a structural element for thermal insulation with tensile reinforcement elements, which require a considerably reduced anchoring length and this way can be used primarily when in the abutting building part only little space is available in the horizontal direction for anchoring the tensile reinforcement element.

LIST OF REFERENCE CHARACTERS

(18) 1structural element for thermal insulation 2insulating body 3tensile rod and/or tensile reinforcement element 4shearing force rod 5compressive element 6, 16, 26, 36anchoring element 6a, 16a, 26a, 36aanchoring bushing 6b, 16b, 26b, 36bprofiling 6c, 16c, 26c, 36crecess at the radial interior of the anchoring bushing 36dflattened section of the anchoring bushing 8connection reinforcement Abuilding part Bbuilding part Laxial length by which the tensile reinforcement element 3 projects into the building part B