Element for thermal insulation

Abstract

An element for thermal insulation between two building parts, including an insulating body to be arranged between the two building parts and reinforcement elements in the form of at least tensile elements, extending in the installed state of the element essentially horizontally and perpendicularly to the essentially horizontal extension of the insulating body through said body, and respectively projecting in the horizontal direction from the insulating body and here allowing a connection to one of the two building parts preferably made from concrete. The tensile reinforcement elements are formed as multi-part composite elements such that at least in the area of the insulating body they exhibit a central section projecting from the insulating body and at least partially being made from fiber-reinforced synthetic material. The tensile reinforcement elements have in an area outside the insulating body at least one anchoring section with geometric and/or material characteristics at least partially deviating from the central section, with the anchoring section being connected to the central section in a connection area. The connection area is arranged distanced from the insulating body. The central section is made from a cylindrical rod-shaped and/or tubular material and is provided on its radial exterior, at least in an area between the insulating body and the connection area, with an essentially smooth wall.

Claims

1. An element for thermal insulation between two building parts, comprising an insulating body (2) adapted to be arranged between the two building parts, reinforcement elements comprising at least tensile reinforcement elements (3), which in an installed state of the element (1) extend horizontally and extend perpendicularly to a horizontal extension of the insulating body through said body, and each said tensile reinforcement element projects in a horizontal direction from the insulating body and here is adapted to be connected to one of the two building parts, the tensile reinforcement elements (3) are embodied as multi-part composite elements and, at least in an area of the insulating body (2), comprise a central section (3a) which projects from the insulating body and is made at least partially from a fiber reinforced synthetic material, and in an area outside the insulating body (2), comprise at least one anchoring section (3b) with at least one of geometric or material characteristics at least partially deviating from the central section (3a), that is connected in a connection area (3h) to the central section (3a), the connection area (3h) being arranged distanced from the insulating body, and the central section (3a) is made, at least in the connection area (3h), from a tubular material and has on a radial exterior thereof, at least in an area between the insulating body (2) and the connection area (3h), an essentially smooth wall, wherein the anchoring section (3b) and the corresponding central section (3a) are fixed to each other in the connection area (3h) in at least one of a form-fitting, force-fitting, or material-to-material fashion, and an interior anchor inserted into the central section as a welding aid for the central section, and the insertion of the interior anchor in the central section occurs during production of the central section.

2. The element for thermal insulation according to claim 1, wherein the at least one anchoring section (3b) of the tensile reinforcement element (3) is connected at a free end of the corresponding central section (3a), is arranged aligned to the central section (3a), and in the installed state of the element (1) essentially extending horizontally.

3. The element for thermal insulation according claim 2, wherein the at least one anchoring section comprises two of the anchoring sections, with one of the anchoring sections being located at each respective free end of the central section (3a) of the tensile reinforcement element.

4. The element for thermal insulation according to claim 1, wherein the anchoring section (3b) of the tensile reinforcement elements (3) is made from steel.

5. The element for thermal insulation according to claim 1, wherein the central section (3a) of the tensile reinforcement elements (3) is made from fiberglass-reinforced synthetic material.

6. The element for thermal insulation according to claim 1, wherein at least one of the anchoring section (3b) of the tensile reinforcement elements (3) or the central section (3a) of the tensile reinforcement elements (3) is made from at least one of a rod-shaped or tubular material.

7. The element for thermal insulation according to claim 1, wherein the anchoring section (3b) of the tensile reinforcement elements (3) comprises at an exterior thereof a profiling projecting radially outwardly relative to the central section (3a).

8. The element for thermal insulation according to claim 1, wherein a mutual fixation of the anchoring section (3b) and the corresponding central section (3a) comprises at least one of a sleeve connection (3e), an adhesion, or a threaded connection.

9. The element for thermal insulation according to claim 1, wherein a mutual fixation of the anchoring section of the tensile reinforcement elements and the corresponding central section occurs via a welded connection to the interior anchor.

10. The element for thermal insulation according to claim 1, wherein the connection area (3h) in the installed state has a horizontal distance (L.sub.1) from the insulating body (2) which is at least equivalent to and maximally five times a size of a diameter (d.sub.M) of the central section (3a).

11. The element for thermal insulation according to claim 1, wherein the connection area (3h) in the installed state has a length (L.sub.2) in the horizontal direction, which is at least twice and maximally ten times a size of a diameter (d.sub.V) of the anchoring section (3b).

12. The element for thermal insulation according to claim 1, wherein the anchoring section (3b) in the installed state extends, starting from the connection area (3h), in the horizontal direction over a length (L.sub.3), which is at least twenty times a size of the diameter (d.sub.V) of the anchoring section (3b).

13. The element for thermal insulation according to claim 1, further comprising at least one of compression elements (5) or lateral force elements (4).

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, in which

(2) FIG. 1 shows an element for thermal insulation according to the invention in a schematic and partially cross-sectioned side view; and

(3) FIGS. 2 to 6 show various exemplary variants for the mutual fixation of the central section made from a fiber-reinforced synthetic material and an anchoring section made from rebar.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(4) FIG. 1 shows an element for thermal insulation 1 with a multi-part cuboid-shaped insulating body 2, which is provided for an arrangement in a building joint remaining between two concrete building parts (which are not shown here, but with their position being indicated by the reference characters A, B) for the purpose of separating these to 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 lateral force rods 4, and in the form of compression elements 5.

(5) The arrangement of the reinforcement elements occurs in a manner known from prior art and common, namely by arranging the tensile reinforcement elements 3 in the upper area of the insulating body 2, which in the installed state extend in the horizontal direction and serve for the transfer of tensile forces between the two building parts A, B connected to the element for thermal insulation and for this purpose are anchored in these building parts.

(6) In the lower section, the so-called compression zone of the insulating body 2, the compression elements 5 are arranged, namely also in the horizontal direction of extension, with them however not projecting from the insulating body 2. Finally, lateral force rods 4 are provided, which are positioned in the area of the insulating body 2 in an inclined fashion in reference to the horizontal and extend from the reinforcement elements of the element for thermal insulation diagonally downwards, matching the stress to be compensated, from the tensile zone on one side of the insulating body to the compression zone on the other size of the insulating body, in order to here extend vertically in the direction of the tensile zones angled upwards and then, after another angle, parallel to the tensile reinforcement elements.

(7) The tensile reinforcement elements 3 are essential for the present invention, with FIG. 1 showing a tubular central section 3a made from a fiber reinforced synthetic material which extends in the area of the insulating body 2 in the horizontal direction and projects slightly in the horizontal direction at both sides of the insulating body, namely by an axial length L.sub.1+L.sub.2 and in this projecting area, in the installed state, is arranged in the area of the adjacent building parts A, B. The length L.sub.2 indicates the area in which the central section 3a and the anchoring section 3b overlap and here form a connection area 3h, with the diameter of the central area d.sub.M being greater than the diameter of the anchoring area d.sub.V, and thus it encompasses the central area of the anchoring section.

(8) The length L.sub.1 in turn represents the axial distance of the connection area 3h from the insulating body 2. And the length L.sub.3 states the length by which the anchoring section 3b, starting from the connection area 3b and/or the face of the central area 3a, extends into the building part A. FIG. 1 shows not the full length of the anchoring section 3a and thus the size of the length L.sub.3 in FIG. 1 is not equivalent to the overall length of the anchoring section 3b, either.

(9) The tensile reinforcement element 3 of FIG. 1 additionally comprises rod-shaped anchoring sections 3b made from rebar, which are inserted into the tubular material of the central section and fixated here.

(10) Suitable examples for the mutual fixation of the central section and the anchoring section are discernible from FIGS. 2 to 6, which shall be explained in greater detail in the following:

(11) FIG. 2 shows the insertion of the anchoring section 3b into a cylindrical bore 3c of the central section 3a. The mutual connection of the central section and the anchoring section can occur for example by a press-fit connection and/or supported by the additional use of adhesives, in order to generate an actually stable connection, which is capable to transfer tensile forces. The axial length in which the anchoring section 3b and the central section 3b overlap is indicated with the reference character L.sub.2, both in FIG. 1 as well as in FIG. 2, and is equivalent to the axial length of the connection area 3h.

(12) FIG. 3 shows a variant thereof, in which the free end 3d of the anchoring section 3b, inserted in the free end and the tubular material of the central section 3a, is provided on its exterior with a profiling, which allow adhesive, mortar, or similar connection means to have more space to enter into a positive connection to the profiling in order to improve and/or ensure the mutual connection.

(13) In FIG. 4 the free end 3d of the anchoring section 3b is provided with an external thread and penetrates the cylindrical opening 3c of the central section 3a, which opening 3c in turn shows an internal thread and this way allows the threaded connection of the anchoring section 3b and the central section 3a.

(14) FIGS. 5 and 6 show finally two sleeve joints, thus the mutual fixation of anchoring section 3b and the central section 3a with a sleeve being interposed, which comprise at their two mutually opposite sides two bores 3f, 3g aligned to each other, with the two bores however being arranged in the sleeve such that they show no mutual connection. One bore 3g is therefore provided to receive the free end 3d of the anchoring section 3b, either via a simple plug-in connection or with the additional use of adhesives or other connection means. On the other side of the sleeve 3e finally a bore 3f is provided, into which the free end 3h of the central section 3a is inserted and fixed here, for example via a press-fit connection, plug-in connection, or adhesion.

(15) As discernible from FIG. 1, the central section 3a extends with its synthetic material far beyond the insulating body and allows therefore the anchoring sections 3b, made from rebar, to be connected to the central section 3a in an area, which is not at risk for corrosion. This way the advantages according to the invention can be yielded, namely in the area of the insulating body allowing the use of the particularly advantageous synthetic material of the central section, which is primarily characterized in the better costs compared to stainless steel and a particularly poor thermal conductivity. And additionally in the area outside the insulating body, finally in the area of the building parts, the anchoring areas can be made from rebar which has similar temperature expansion coefficients as the surrounding concrete of the building parts, and thus can enter into an optimal connection to the concrete, by which the tensile force can be transferred from the concrete to the tensile reinforcement element and vice versa, without here the otherwise developing destructions occurring due to excessive relative movements.

(16) In summary, the present invention provides the advantage to provide an element for thermal insulation which comprises tensile reinforcement elements in the form of multi-part composite elements, comprising a central section made from fiber-reinforced synthetic material on the one side and at least an anchoring section made from steel and particularly rebar, on the other side. This way, the various materials can be used precisely according to their characteristics and advantages, which was not possible in this way in prior art.

LIST OF REFERENCE CHARACTERS

(17) 1element for thermal insulation 2insulating body 3tensile rods 3acentral section 3banchoring sections 3ccylindrical opening of the central section 3a 3dfree end of the anchoring section 3b 3esleeve 3fbore in the sleeve 3e for the anchoring section 3b 3gbore in the sleeve 3e for the central section 3a 3hconnection area 4lateral force rods 5pressure elements Aconcrete building part Bconcrete building part d.sub.Mdiameter of the central section d.sub.Vdiameter of the anchoring section L.sub.1axial distance of the connection area 3h from the insulating body L.sub.2length of the connection area 3h in the axial direction L.sub.3size the anchoring rod section extends from the connection area 3g into the building part A and/or B