Composite column

Abstract

The invention relates to a composite column (1) for forming a load-bearing construction element for a structure, such as a multi-storey building, a hall or a bridge. The composite column (1) has a reinforcing body (2) which comprises a plurality of reinforcing rods (3) that extend in the column longitudinal direction. The reinforcing rods (3) are interconnected at a plurality of points in their longitudinal direction and are completely embedded in concrete (6). All the elements of the reinforcing body (2) are arranged within a space which is enclosed by a lateral surface (M) that surrounds the reinforcing rods (3). The design of the composite column (1) according to the invention makes it possible to provide columns which are very slim and at the same time have an extremely high load-bearing capacity.

Description

[0001] P192906PC00

[0002] 1

[0003] Composite support

[0004] TECHNICAL AREA

[0005] The invention relates to a composite support for forming a load-bearing structural element for a building according to the preamble of claim 1.

[0006] STATE OF THE ART

[0007] Prefabricated concrete columns have long been an important structural element in the construction of multi-story buildings, halls and bridges.

[0008] Such columns typically feature a reinforcement body with several steel reinforcing bars running lengthwise along the column, which are completely embedded in concrete. According to current best practices, the reinforcing bars must be restrained against buckling along their longitudinal direction by a specific number of stirrups.

[0009] To achieve sufficient fire resistance, corrosion resistance and bond strength, a minimum concrete cover as defined by standards must be maintained.

[0010] From an architectural point of view, there is an increasing need for concrete supports that are as slim as possible and at the same time extremely load-bearing, which can only be partially satisfied by the supports known today.

[0011] PRESENTATION OF THE INVENTION

[0012] The task therefore arises to provide a composite support that satisfies this need to a significantly greater extent.

[0013] This problem is solved by the subject matter of claim 1. P192906PC00

[0014] 2

[0015] This concerns a composite column for forming a load-bearing structural element for a building, such as a multi-story building, a hall or a bridge.

[0016] The composite column has a reinforcement body comprising several reinforcing bars running lengthwise along the column. The reinforcing bars are connected to each other at several points along their longitudinal axis and are completely embedded in concrete. The reinforcing bars are preferably made of steel. All elements of the reinforcement body are arranged within a space enclosed by an imaginary shell surface that encloses the reinforcing bars.

[0017] The inventive design of the composite column makes it possible to provide very slender and extremely load-bearing columns.

[0018] In a preferred embodiment of the composite column according to the invention, some or all of the reinforcing bars are directly welded together at several points along their longitudinal direction. In particular, if all reinforcing bars are directly welded together, this results in a particularly simple and compact structure of the reinforcement body, which enables extremely slender columns.

[0019] In another preferred embodiment of the composite column according to the invention, some of the reinforcing bars or all of the reinforcing bars are connected to each other at several points along their longitudinal direction via connecting elements.

[0020] There are also designs in which some or all of the reinforcing bars are directly welded together along their longitudinal direction at some points and connected via connecting elements at other points. P192906PC00

[0021] 3

[0022] In embodiments of the composite column according to the invention, in which reinforcing bars are connected to one another via connecting elements, it is preferred that the connecting elements are formed from sections of bar material and / or tube material, which are connected to the reinforcing bars by welding. Such connecting elements can be manufactured cost-effectively by cutting them to length from semi-finished material and securely and tightly connected to the reinforcing bars by welding.

[0023] It is further preferred that the longitudinal axes of the sections made of bar material and / or tube material run parallel in the longitudinal direction of the column and thus in the longitudinal direction of the reinforcing bars. Such an orientation of the connecting elements facilitates the simple manufacture of the reinforcement body and also allows for easy adjustment of the material-fit connection between the reinforcing bars and the connecting element, by adapting the axial length of the respective connecting element to the weld length required for the specific situation. This design also results in particularly shear-resistant reinforcement bodies.

[0024] It is advantageous if at least some or even all of the reinforcing bars in the reinforcement structure are identical. This significantly simplifies storage for the production of the columns and helps avoid errors in the manufacturing of the reinforcement structure.

[0025] It is also advantageous if at least some or even all of the reinforcing bars in the reinforcement structure are rod-shaped. Such reinforcing bars can be manufactured cost-effectively by cutting them to length from semi-finished material.

[0026] If the reinforcing bars of the reinforcement body have a profiled, in particular grooved, surface, a positive fit is created between the P192906PC00

[0027] 4

[0028] Reinforcing bars with the concrete surrounding them in the longitudinal direction of the reinforcing bars, which is preferred.

[0029] In another preferred embodiment of the composite column according to the invention, at least some or even all of the reinforcing bars of the reinforcement body run parallel to each other. Such columns typically have a cross-section that is constant along their longitudinal direction.

[0030] However, it is also possible for some or even all of the reinforcing bars of the reinforcement structure to not run parallel to each other over part or all of their longitudinal direction, e.g., diverging. Such columns typically have a cross-section that varies along their longitudinal direction.

[0031] In another preferred embodiment of the composite column, end plates, preferably made of steel, are arranged at its ends and are connected to some or all of the reinforcing bars, advantageously by welding. This provides defined interfaces for adjoining load-bearing components of a building to be formed with the columns and ensures a controlled force transfer into the reinforcement body of the columns.

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Further embodiments, advantages, and applications of the invention will become apparent from the dependent claims and from the following description with reference to the figures. These figures show:

[0034] Fig. 1a shows a side view of a first composite support according to the invention;

[0035] Fig. 1b shows the reinforcement body and the end plates of the composite column from Fig. 1a;

[0036] Fig. 1c shows a section along line AA.

[0037] Fig. 1a; P192906PC00

[0038] 5

[0039] Fig. 2a shows a side view of a second composite support according to the invention;

[0040] Fig. 2b shows the reinforcement body and the end plates of the composite column from Fig. 2a;

[0041] Fig. 2c shows a section along line BB from Fig. 2a;

[0042] Fig. 3a shows a side view of a third composite support according to the invention;

[0043] Fig. 3b shows the reinforcement body and the end plates of the composite column from Fig. 3a;

[0044] Fig. 3c shows a section along line CC from Fig. 3a.

[0045] Fig. 4a shows a side view of a fourth composite support according to the invention;

[0046] Fig. 4b shows the reinforcement body of the composite column from Fig. 4a; and

[0047] Fig. 4c shows a section along line DD from Fig. 4a.

[0048] WAYS TO IMPLEMENT THE INVENTION

[0049] Figures 1a and 1c show a first composite column 1 according to the invention, once in side view (Fig. 1a) and once in section along line AA in Fig. 1a (Fig. 1c). Fig. 1b shows a side view of the reinforcement body 2 of the composite column from Fig. 1a with the end plates 7 arranged thereon.

[0050] As can be seen, the reinforcement body 2 comprises four identical, parallel steel reinforcing bars 3 running in the longitudinal direction of the column, which are arranged at a uniform distance from each other.

[0051] The reinforcing bars 3 have a grooved surface to create a positive connection with the surrounding concrete 6 in the longitudinal direction of the reinforcing bars 3.

[0052] Centrally located between the reinforcing bars 3, a multitude of identical pipe sections are arranged at regular intervals along the longitudinal direction of the support 1.

[0053] 6 sections 4 (standard connecting elements) to which the reinforcing bars 3 are connected via welds 8. The welds 8 each run over the entire length of the pipe sections 4. For the sake of clarity, not all reinforcing bars 3 and welds 8 are provided with reference numbers.

[0054] The reinforcing bars 3 of the reinforcement body 2 are welded at their ends to the end plates 7 of the support 1.

[0055] As can be seen from the dashed line, which shows the course of an imaginary cladding surface M enclosing the reinforcing bars 3, all elements of the reinforcement body 2, namely the reinforcing bars 3 and the pipe sections 4, are arranged within the space enclosed by this cladding surface M.

[0056] The entire reinforcement body 2 is completely embedded in concrete 6, with a defined minimum concrete cover thickness.

[0057] Figures 2a and 2c show a second composite column 1 according to the invention, once in side view (Fig. 2a) and once in section along line BB in Fig. 2a (Fig. 2c). Fig. 2b shows a side view of the reinforcement body 2 of the composite column from Fig. 2a with the end plates 7 arranged thereon.

[0058] This second composite support according to the invention

[0059] Figure 1 differs from that shown in Figures 1a-1c only in that, instead of the pipe sections arranged centrally between the reinforcing bars 3, a plurality of identical sections made of round bar material 5 (connecting elements according to the claim) are arranged between each pair of reinforcing bars 3 along the longitudinal direction of the support 1, to which the reinforcing bars 3 are connected by welds 8. The welds 8 each extend over the entire length of the sections 5. For the sake of clarity, P192906PC00

[0060] 7 all reinforcing bars 3, sections 5 and welds 8 are provided with reference numbers.

[0061] As can be seen from the dashed line, which shows the course of an imaginary lateral surface M enclosing the reinforcing bars 3, all elements of the reinforcement body 2, namely the reinforcing bars 3 and the sections made of round bar material 5, are arranged within the space enclosed by this lateral surface M.

[0062] Figures 3a and 3c show a third composite column 1 according to the invention, once in a side view (Fig. 3a) and once in section along line CC in Fig. 3a (Fig. 3c). Fig. 3b shows a side view of the reinforcement body 2 of the composite column from Fig. 3a with the end plates 7 arranged thereon.

[0063] This third composite column 1 according to the invention differs from the columns shown in Figures 1a-1c and 1a-1c in that no pipe sections or sections of bar material are present as connecting elements between the reinforcing bars 3. The reinforcing bars 3 are directly connected to one another by a plurality of welds 8 spaced apart from each other in the longitudinal direction of the column 1.

[0064] For the sake of clarity, not all reinforcing bars 3 and welds 8 are provided with reference numbers.

[0065] As can be seen from the dashed line, which shows the course of an imaginary lateral surface M enclosing the reinforcing bars 3, all elements of the reinforcement body 2, namely the reinforcing bars 3, are arranged within the space enclosed by this lateral surface M.

[0066] Figures 4a and 4c show a fourth composite column 1 according to the invention, once in side view (Fig. 4a) and once in section along line DD in Fig. 4a (Fig. 4c). Fig. 4b shows a P192906PC00

[0067] 8

[0068] Side view of the reinforcement body 2 of the composite column 1 from Fig. 4a.

[0069] This fourth composite column according to the invention has a similar structural design in cross-section to the column shown in Figures 1a-1c, except that the reinforcement body 2 here comprises eight identical steel reinforcing bars 3 running parallel in the longitudinal direction of the column, forming four pairs of reinforcing bars. Between these pairs, a plurality of identical pipe sections 4 (connecting elements according to the claim) are arranged at regular intervals along the longitudinal direction of the column 1. The reinforcing bars 3 are connected to these pipe sections 4 by means of welds 8. The welds 8 also extend over the entire length of each pipe section 4. For the sake of clarity, not all reinforcing bars 3, pipe sections 4, and welds 8 are provided with reference numerals.

[0070] In contrast to the previously described composite columns according to Figures 1a-1c, 2a-2c and 3a-3c, this composite column 1 has no end plates. At the upper end of the column 1, the reinforcing bars 3 of the reinforcement body 2 project beyond the end face of the column 1, so that they can be connected to and embedded in concrete with other reinforcement elements, e.g., a concrete slab, when constructing a structure with the column 1. At the lower end, positioning dowels 9 project beyond the end face of the column 1, with which the column 1 can be positively locked into a defined installation position during installation.

[0071] As can be seen from the dashed line, which shows the course of an imaginary cladding surface M enclosing the reinforcing bars 3, all elements of the reinforcement body 2, namely the reinforcing bars 3 and the pipe sections 4, are arranged within the space enclosed by this cladding surface M. P192906PC00

[0072] 5 The entire reinforcement body 2 is completely embedded in concrete 6 , with a defined minimum concrete cover thickness .

[0073] While preferred embodiments of the invention are described in the present application, it should be clearly pointed out that the invention is not limited to these and can also be carried out in other ways within the scope of the following claims. In particular, it should be noted that the composite supports according to the invention can accommodate all possible transverse

[0074] They can have 15 different cut shapes, e.g. round, oval, rectangular, hexagonal.

Claims

P192906PC00 10 PATENT CLAIMS 1. Composite column (1) for forming a load-bearing structural element for a building, comprising a reinforcement body (2) comprising several reinforcing bars (3) extending in the longitudinal direction of the column, in particular made of steel, which are connected to each other at several points along their longitudinal direction and are completely embedded in concrete (6), characterized in that all elements (3, 4, 5) of the reinforcement body (2) are arranged within a space which is enclosed by a cladding surface (M) surrounding the reinforcing bars (3).

2. Composite column (1) according to claim 1, wherein some of the reinforcing bars (3) or all of the reinforcing bars (3) are directly connected to each other at several points along their longitudinal direction by welding.

3. Composite column (1) according to one of the preceding claims, wherein a part of the reinforcing bars (3) or all reinforcing bars (3) are connected to each other at several points along their longitudinal direction via connecting elements (4, 5).

4. Composite support (1) according to claim 3, wherein the connecting elements (4, 5) are formed from sections of bar material and / or tube material which are connected to the reinforcing bars (3) by welding.

5. Composite support (1) according to claim 4, wherein the longitudinal axes of the sections made of bar material and / or tube material run parallel in the longitudinal direction of the support.

6. Composite column (1) according to one of the preceding claims, wherein at least a part of the reinforcement- P192906PC00 11 reinforcing bars (3) of the reinforcing body (2) are identically designed, and in particular, wherein all reinforcing bars (3) of the reinforcing body (2) are identically designed.

7. Composite column (1) according to one of the preceding claims, wherein at least a part of the reinforcing bars (3) of the reinforcing body (2) are rod-shaped, and in particular, wherein all reinforcing bars (3) of the reinforcing body (2) are rod-shaped.

8. Composite column (1) according to one of the preceding claims, wherein at least a part of the reinforcing bars (3) of the reinforcing body (2) run parallel to each other, and in particular, wherein all reinforcing bars (3) of the reinforcing body (2) run parallel to each other.

9. Composite column (1) according to one of the preceding claims, wherein part or all of the reinforcing bars (3) of the reinforcing body (2) have a profiled, in particular grooved, surface to create a positive connection with the surrounding concrete (6) in the longitudinal direction of the reinforcing bars (2).

10. Composite column (1) according to one of the preceding claims, wherein end plates (7) are arranged at the ends of the column, in particular made of steel, which are connected to a part of the reinforcing bars (3) or all of the reinforcing bars (3), in particular by welding.

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