Steel installation component for buildings for replacing a predetermined region of a reinforced concrete component provided for load-bearing

Abstract

Steel installation parts can replace predetermined regions of reinforced concrete components provided for receiving loads, in particular reinforced concrete beams. The steel installation parts can be arranged in a less dense construction without losing bearing capacity, in order to create space for technical installation elements such as lines, cables and channels.

Claims

1. A support construct (24), comprising a steel installation component (1) non-positively connected to a reinforced concrete component (25), wherein the steel installation component (1) comprises a profile (16) for being covered with concrete for passing on transverse forces to a top side (6) of a recess support (5), the recess support (5) comprising two connecting faces (4) spaced apart from one another in a longitudinal direction, the top side (6), a lower side (7), a front side (8), and back side (9), each distinct from the two connecting faces (4), a steel strip (12) having wide sides (13), a support opening (10) leading from the front side (8) to the back side (9) for passing through installation elements, the support opening (10) being delimited by the two connecting faces (4), the top side (6), and by one of the wide sides (13) of the steel strip (12), and a shear brace (21) for transmitting transverse forces arranged on at least one of the connecting faces (4) provided for being covered with concrete, the shear brace (21) having wide sides (22) that are oriented parallel to the longitudinal direction of the recess support (5) and parallel to a shortest connecting distance between the top side (6) and the lower side (7), and a bearing plate (17), to which the top side (6) belongs, which projects under the profile (16) and is provided for supporting a building (A), wherein the steel installation component (1) completely or partly replaces the reinforced concrete component (25) in a region (2), in which an effect of relatively low transverse forces is provided and the reinforced concrete component (25) is brought up in the longitudinal direction of the recess support (5) as far as to the connecting faces (4).

2. The support construct (24) according to claim 1, wherein the top side (6) of the recess support (5) or the bearing plate (17) of the profile (16) terminates flush with the reinforced concrete component (25).

3. The support construct (24) according to claim 1, wherein the lower side (7) of the recess support (5) terminate flush with the reinforced concrete component (25).

4. The support construct (24) according to claim 1, wherein the lower side (7) of the recess support (5) is supported on a reduced cross-section (26) of the reinforced concrete component (25).

5. The support construct (24) according to claim 1, wherein the top side (6) or the recess support (5) lies against a reduced cross-section (26) of the reinforced concrete component (25).

6. The support construct (24) according to claim 4, wherein reinforcing bars (26) of the reduced cross-section (25) are arranged continuously in the longitudinal direction of the recess support (5).

7. The support construct (24) according to claim 5, wherein reinforcing bars (26) of the reduced cross-section are arranged continuously in the longitudinal direction of the recess support (5).

8. The support construct (24) according to claim 1, wherein the steel strip (12) extends longitudinally beyond the two connecting faces (4).

9. The support construct (24) according to claim 1, wherein the support opening (10) is rectangular.

10. The support construct (24) according to claim 1, wherein the support opening (10) is subdivided into separate portions (14) by one or more braces (15) running between the top side (6) and the lower side (7), wherein an extension of the one or more braces (15) in the longitudinal direction of the recess support (5) is shorter than a height (h) of the support opening (10).

11. The support construct (24) according to claim 1, wherein the profile (16) is formed beam-like as T-profile or as double T-profile and arranged parallel to the longitudinal direction of the recess support (5).

12. The support construct (24) according to claim 1, wherein the profile (16) comprises holes (18) which are provided for being penetrated by reinforcing bars (26) transversely to the longitudinal direction of the recess support (5).

13. The support construct (24) according to claim 8, wherein the steel installation component (1), further comprises an extension (20) of the recess support (5) in the longitudinal direction on the lower side (7), which is configured as continuation of the steel strip (13) beyond a plane of a connecting face (4).

14. The support construct (24) according to claim 1, wherein the shear brace (21) is formed as a shear plate with transversely projecting bolts (19) arranged on one or both sides with welded-on shear studs, or as shear key.

15. The support construct (24) according to claim 1, wherein the shear brace (21) and the profile (16) are rigidly connected to one another.

16. The support construct (24) according to claim 15, wherein the shear brace (21), the steel strip (12), and the profile (16) enclose the recess support (5).

17. The support construct (24) according to claim 1, wherein the steel installation component (1), further comprises reinforcing bar portions (23) arranged parallel to the longitudinal orientation of the recess support (5) on at least one of the connecting faces (4) for connecting steel reinforcements of the reinforced concrete component (3).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a steel installation component in a front view.

(2) FIG. 2 shows obliquely from below a support construct of the steel installation component.

(3) FIG. 3 shows the support construct similar to FIG. 2 obliquely from below.

(4) FIG. 4 shows an embodiment of the support construct below the ceiling of the building obliquely from below.

(5) FIG. 5 shows an embodiment of the support construct below the ceiling of the building obliquely from below.

(6) FIG. 6 shows a part of the embodiment shown in FIG. 5 without concrete.

(7) FIG. 7 shows a part of the steel installation component.

DETAILED DESCRIPTION

(8) FIG. 1 shows the steel installation component (1) in the front view. Here, the recess support (5) comprises on its lower side (7) a steel strip (12), which as extension (20) is run beyond the planes of the connecting faces (4). On the top side (6) of the recess support (5) a beam-like profile (16) for passing on the transverse forces is arranged, which comprises holes (18), which are provided for being penetrated by reinforcing bars (FIG. 3, Number 26). Reinforcing bar portions (23) each are welded onto the extensions (20) which, represented as a thickening of the reinforcing bar portions (23), can be connected by means of a bolted connection to the reinforcement of the reinforced concrete component (FIG. 3, Number 3). On the connecting faces (4), shear braces (21) each formed as shear plates are arranged, which with their wide sides (22) are oriented parallel to the longitudinal direction of the recess support (5) and to the shortest connecting distance between the top (6) and the lower sides (7), i.e. here parallel to the front (8) or back side (9) of the recess support (5), and are welded to the profile (16) so that the recess support (5), with the exception of its lower side (7), is enclosed frame-like. Bolts (19), here formed as shear studs, project out of the shear braces (21), out of the figure plane in the direction of the viewer. They are arranged on both sides transversely to the shear braces (21) and welded to these. Here, the recess support (5) comprises a support opening (10) which through braces (15) is subdivided into separate portions (14) and between top (6) and lower sides (7) of the recess support (5) has a height (h) that is greater than the distance of the support opening (10) to the connecting faces (4). The support opening (10) is delimited at its lower edge (11) by one of the wide sides (13) of the steel strip (12).

(9) FIG. 2 shows obliquely from below the support construct (24) of the steel installation component (1) and the, here, beam-like reinforced concrete component (3) under the ceiling of a building (A). In the middle region (2) of the reinforced concrete component (3) the reinforced concrete is completely replaced by the steel installation component (1), which terminates flush with the reinforced concrete component (3) at the top and bottom. Here, the steel strip (12) of the steel installation component (1) is exposed in the region (2) of low transverse forces, to tensile forces resulting from the positive global moment and functions as a tension strip. Here, the support opening (10) is divided by two braces (15) into three portions (14). The concrete of the reinforced concrete component (3) in each case is brought up as far as to the connecting faces (4) and the front sides of the extensions (20) of the steel strip (12), whose lower wide side (13) is noticeable from below. Relative to the overall extent of the recess support (5), the support opening (10) with its portions (14) here is so large that a lot of space is available for the installation elements and at the same time comparatively little steel is installed since the distance of the support opening (10) to the connecting faces (4) is short relative to the height (h) of the support opening (10).

(10) FIG. 3 shows the support construct (24) similar to FIG. 2 obliquely from below with the difference that the reinforced concrete component (3) and the ceiling of the building (A) are partly shown transparently so that the reinforcing bars (26) are noticeable, which are connected to the steel installation component (1) parallel to the longitudinal orientation of the recess support (5) over the reinforcing bar portions (23) and are passed through the holes (18) of the profile (16) transversely to the longitudinal orientation of the recess support (5), which profile is formed beam-like here and on its own or combined with the ceiling absorbs the local moments and forms the compression flange for the global moment.

(11) FIG. 4 shows an embodiment of the support construct (24) below the ceiling of the building (A) obliquely from below, in which the reinforced concrete component (3) in the region (2) is only in part replaced by the steel installation component (1) and the reinforced concrete component (3) above the top side (6) is configured continuously with reduced cross-section (25).

(12) FIG. 5 shows an embodiment of the support construct (24) below the ceiling of the building (A) obliquely from below, in which the reinforced concrete component (3) in the region (2) is replaced only in part by the steel installation component (1) and the reinforced concrete component (3) below the lower side (7) is configured continuously with reduced cross-section (25).

(13) FIG. 6 shows a part of the embodiment shown in FIG. 5 without concrete, so that the continuous reinforcing bars (26) of the reinforced concrete component (FIG. 5, Number 3) running through below the lower side (7) are visible.

(14) FIG. 7 shows a part of the steel installation component (1), in which the shear brace (21) is configured as a shear key. Here, the profile (16) configured beam-like is supported on the bearing plate (17). Here, the reinforcing bar portions (23) welded onto the extension (20) on the connecting face (4) are also shown.

LEGEND

(15) 1 Steel installation component 2 Predetermined region 3 Reinforced concrete component 4 Connecting face 5 Recess support 6 Top side of the recess support 7 Lower side of the recess support 8 Front side of the recess support 9 Back side of the recess support 10 Support opening 11 Edge of the support opening 12 Steel strip 13 Wide sides of the steel strip 14 Portion of the support opening 15 Bracing 16 Profile for passing on the transverse forces 17 Bearing plate 18 Holes for reinforcing bars 19 Bolts 20 Extension 21 Shear brace 22 Wide sides of the shear brace 23 Reinforcement bar portions 24 Support construct 25 Reduced cross-section of the reinforced concrete component 26 Reinforcing bars A Building h Height of the support opening