EP2069581B1 - Reinforced concrete structure for a building, and method for the erection of such a structure - Google Patents

Abstract

The aim of the invention is to create a reinforced concrete structure that is used for placing a

Description

The invention relates to a reinforced concrete structure for a building, comprising at least one reinforced concrete base component and an outer component arranged on the at least one reinforced concrete base component. Moreover, the invention relates to a method for creating such a reinforced concrete structure.

Various attempts are known from the prior art to connect external components thermally separated to buildings. An example of this is the Isokorb ^® solution the company SCHÖCK be in all baskets (ie not separated in pressure and tension chord) is used. In other solutions, compression and tension straps are separated from each other and replaced by screw or the like.

The solutions known from the prior art have two significant disadvantages.

First, it is always necessary that a part of the construction is carried out in situ concrete. For example, a prefabricated reinforced concrete balcony is suspended by means of a connection, for example a SCHÖCK isocorben, into an in-situ concrete floor, an in-situ concrete lining or an in-situ concrete wall. Such a construction is exemplary in the Figures 1 and 2 displayed. On a reinforced concrete precast, here a reinforced concrete wall 1, a ceiling 2 is arranged, to which an external component, here a balcony plate 3, is attached. The ceiling 2 is made of in-situ concrete, so that the connecting iron 4, which connect the balcony slab 3 with the ceiling 2 at intervals of, for example, 10 cm, must be placed on the construction site in its final position. This requires a very accurate length of the screw connections, is therefore very expensive and often does not lead to optimal results.

If the ceiling 2 is not in cast-in-situ concrete, but essentially designed as precast reinforced concrete part (not shown), then a screwing provided on the balcony slab 3 connecting iron 4 must be carried out with provided in the ceiling 2 connecting elements, wherein for fixing the position of the connecting elements in the ceiling 2 again an in-situ concrete encapsulation is used. Again, this results in the above-mentioned disadvantages.

More detailed information about the Schöck Isolcorb Type S can be found in the document " Schöck Isokorb -Tecknische Information "(March 2010) on pages 151-155 , which can be accessed via the download section of the Schöck Gmblt website.

The preparation of a connection using a SCHÖCK Isokorbes in conjunction with the use of in-situ concrete is also associated with a relatively high time and cost, especially if the ceiling 2 has a large clearance height.

On the other hand, the arrangement of the external components to the building for design reasons, in particular due to the predetermined maximum distances of the connecting iron 4 to each other, limits. Exterior components can not be installed anywhere in the building. For example, in the stairwell area or when spanning large glass surfaces mounting using the above outlined solution is either not possible or very problematic, since the outer component when using only less connecting iron 4 in the side areas more or less "sags" in the middle.

The balcony plate 3 is in the described and in the Figures 1 and 2 shown construction on the ceiling 2. When using a SCHÖCK Isokorbes a directed into the balcony slab 3 bearing force acts as a tensile force Z next to an obliquely downward acting low suspension force Z1 and a retroactive in the ceiling bearing force as a compressive D. All forces act in the plane of the balcony slab third

it is essential that the compressive forces D are derived only in the plane of the balcony slab and by apposition. It is therefore a connection, which is resisted in the plane of the outer component.

An object of the present invention is to provide a reinforced concrete construction for the arrangement of an external component to a building, which is on the one hand structurally particularly simple and on the other hand particularly universally applicable.

This object is achieved by a Stahlbetonkonstrucktion according to claim 1 and a method according to claim 9. Thereafter, a reinforced concrete construction is provided with at least one reinforced concrete base member and arranged on the at least one reinforced concrete Basiabauteil outer member, wherein the outer member rests on a number of spaced apart and at least to the at least one reinforced concrete Basiisbauteil thermally separated connected reinforced concrete auxiliary components. The number of reinforced concrete auxiliary components and the at least one reinforced concrete base component are fatigued components.

The inventive method for creating a reinforced concrete structure for a building with at least one

The precast concrete base component and an external component arranged on the at least one reinforced concrete base component are characterized by the following steps: thermally separated connection of a number of spaced reinforced concrete auxiliary components to at least the at least one reinforced concrete base component, and placing the external component on the number of reinforced concrete components auxiliary components.

A core idea of the invention is to use a reinforced concrete auxiliary component for mounting the outer component, on which the outer component can rest. The reinforced concrete auxiliary component is thermally separated from the reinforced concrete base component. A mechanical connection of the outer component with the reinforced concrete base component is no longer absolutely necessary. The reinforced concrete auxiliary component and the reinforced concrete base component are structural components.

The outer component can be a balcony slab, a support, a wall, a staircase, etc. The outer component is preferably a precast reinforced concrete part. All components can be completely manufactured in advance in the factory and only have to be screwed together on site.

Under a connection is understood in particular a secure connection of two components. A thermally isolated connection is understood in particular to mean a connection in which a minimum distance necessarily required for thermal insulation (preferably at least 8 centimeters in the current state of the art) is present between the two components to be connected, which is filled with high-quality insulation.

The Stahlbotgnkonstruktion invention is - compared with known solutions, such as a SCHÖCK Isokorb - structurally very simple. The possible uses of the invention

Reinforced concrete construction are unlimited and include civil engineering and civil engineering. With the help of the construction staircase areas, areas of elevator shafts and large-scale vertical glass surfaces or the like of external components can be easily spanned. Also, supports and walls can be placed on the cantilevered outer component, without resulting in bending of the outer component. Overall, significantly heavier and significantly more cantilevered exterior components can be used compared to the prior art. In addition, the time required for assembly compared to conventional solutions is significantly lower, which reduces the overall construction costs. In addition, the use of in-situ concrete is no longer mandatory.

Fig. 1

den Anschluß einer Balkonplatte an eine Ortbetondecke in einer Seitenansicht (schematisch, Stand der Technik),

Fig. 2

den Anschluß einer Balkonplatte an eine Ortbetondecke in einer Draufsicht (schematisch, Stand der Technik),

Fig. 3

den erfindungsgemäßen Anschluß einer Balkonplatte an zwei Stahlbetonstützen in einer Seitenansicht (schematisch),

Fig. 4

den erfindungsgemäßen Anschluß einer Balkonplatte an zwei Stahlbetonstützen in einer Draufsicht (schematisch),

Fig. 5

eine erste Ausführungsform der Erfindung in einer Seitenansicht,

Fig. 6

ein Detail aus Fig. 5 in einer Schnittdarstellung entlang der Linie A-A in Fig. 5,

Fig. 7

eine zweite Ausführungsform der Erfindung in einer Seitenansicht,

Fig. 8

eine dritte Ausführungsform der Erfindung in einer Seitenansicht,

Fig. 9

eine vierte Ausführungsform der Erfindung in einer Seitenansicht,

Fig. 10

eine Darstellung verschiedener alternativer Verbindungselemente.

Advantageous embodiments of the invention are specified in the dependent claims and are explained in more detail below in connection with embodiments of the invention with reference to the drawings. Hereby show:

Fig. 1

the connection of a balcony slab to a Ortbetondecke in a side view (schematically, prior art),

Fig. 2

the connection of a balcony slab to a Ortbetondecke in a plan view (schematically, prior art),

Fig. 3

the connection according to the invention of a balcony slab on two reinforced concrete columns in a side view (schematically),

Fig. 4

the connection according to the invention of a balcony slab on two reinforced concrete columns in a plan view (schematic),

Fig. 5

A first embodiment of the invention in a side view,

Fig. 6

a detail from Fig. 5 in a sectional view along the line AA in Fig. 5 .

Fig. 7

A second embodiment of the invention in a side view,

Fig. 8

A third embodiment of the invention in a side view

Fig. 9

A fourth embodiment of the invention in a side view,

Fig. 10

a representation of various alternative fasteners.

All figures show the invention only with its essential components. The same reference numerals correspond to elements of the same or comparable function.

As in the FIGS. 3 and 4 shown, it is sufficient for mounting, for example, a balcony slab 3 when using a reinforced concrete construction according to the invention, if at a distance of one or a few meters reinforced concrete auxiliary components 10 are provided, which are thermally separated with the reinforced concrete base member 11. Instead of the abutment in the in Figures 1 and 2 illustrated state of the art solution is now a Auflagerung the auxiliary component 10 on the base member 11th

For the invention is essential that the Auflagerung from the plane of the balcony slab 3 is removed. Due to the thus achieved improved statics, the auxiliary components 10 can be arranged with significantly greater distances from each other than the known from the prior art connecting iron 4, so that even larger glass areas X or the like can be bridged. Preferably, the arrangement of the auxiliary components 10 in the area already existing supports 11 or walls, so that the attachment is possible even if the building is built throughout in a skeleton construction.

In the balcony plate 3 either no force at all, for example in the FIGS. 5 and 7 illustrated and described below in detail embodiments; In this case acts in the auxiliary member 10 in addition to a force acting in the direction of gravity, ie downward bearing force as compressive force D, and acting in the direction of the base member 11 bearing force as a small supporting force Dl directed from the base member 11 in the auxiliary member 10 bearing force as tensile force Z.

Or the tensile force Z 'acts in the balcony plate 3, so for example in the FIGS. 8 and 9 illustrated and described below in detail embodiments. In the auxiliary member 10 then act only the above-mentioned compressive forces D and D1. In FIG. 3 both cases are drawn, with either Z or Z 'present.

In contrast to the solutions known from the prior art, the pressure forces are thus discharged outside of the outer component 3 and by Auflagerung. It is therefore a thermally disconnected terminal, which is superimposed outside the plane of the outer member 3.

In the FIG. 5 a first variant of a thermally isolated connection is shown. As in the following figures, only a single auxiliary component 10 and its connection to a base member 11 is shown. In practice, at least two of these auxiliary components 10 are used for mounting an outer component 3.

The base member 11 is formed in the form of a reinforced concrete support and will be described in more detail below. The auxiliary member 10 is formed as a beam, so that the outer member (not shown) can rest securely on the auxiliary member 10. For example, the joist 10 may be a cantilever beam or a field beam. The load and shape of the beam 10 depends on the permissible load on the support 11.

Base member 11 and auxiliary member 10 are spaced from each other and form between them a gap 5, which serves to form the thermal separation between the base member 11 and auxiliary component 10 on the one hand and the base member 11 and outer member 3 on the other hand, as will be explained in more detail below.

In the region of the tension belt 20 (upper flange) of the lower beam 10, the connection to the base member 11 generally speaking by means of a constructive comparatively simple connection device, such as a screw or anchoring. This tensile forces are transmitted.

In the embodiment described here, the connection is carried out by means of a tie rod 10 arranged in the drawbar 30 by means of a thread and corresponding connecting elements (nuts, washers, etc.) in the intermediate space 5 between beam 10 and base member 11 with the in the gap. 5 protruding end plate of a mounting shoe 31 is connected, which rests in the base member 11. A side view and a plan view of the mounting shoe 31 shows FIG. 10 , The end plate of the mounting shoe 31 has to receive the tie rod 30 has a hole or a slot to compensate for assembly tolerances.

In the area of the pressure belt 21 (lower chord) of the beam 10, the connection to the base component 11 generally speaking takes place in that the beam 10 rests on the base member 11, so it is supported on this. This compressive forces are transmitted. This bearing of the underlay pressure belt 21 on the base member 11 is preferably carried out freely resting. But it can also be done depending on the application with the aid of a gearing (Verdornung) or screwing.

In the embodiment described here, the connection is made with the aid of a provided in the beam 10 printing frame 32 which is formed in the manner of a load-bearing triangle. By using a pressure frame 32 in the form of a load-bearing triangle, a particularly stable system is achieved in which no bending forces act in the frame. The use of a printing frame 32 allows the Targeted to intercept pressure forces and divert into the base member 11.

The arms of the printing frame 32 protrude into the intermediate space 5 between the base 10 and the base component 11 in order to rest there on a compression belt console 33, which projects into the intermediate space 5 and is arranged in the base component 11. Instead of in FIG. 5 shown simple console 33 may also be a support pocket, a console 34 with threaded sleeve or an anchor plate 35 may be provided with threaded sleeve for the pressure belt 21, cf. FIG. 10 , It is particularly advantageous if the anchor plate 35 has horizontal toothing grooves.

The use of a pressure frame 32 in the region of the pressure belt 21 of the undercarriage 10 is not absolutely necessary. If only comparatively low loads have to be borne, instead of the pressure frame 32, a simple steel profile 36 in the form of a pressure flap, a compression bar or a pressure profile, as exemplified in FIG FIG. 10 pictured to be used. Also, the construction of the printing frame 32 from the in FIG. 5 deviate from the pictured form.

The distance between the connection of the draw-train belt 20 and the Auflagerung the beam tension belt 21 is not fixed, but can be chosen depending on the load and the local construction conditions.

In the intermediate space 5 between beam 10 and base member 11, an insulating material 6 is arranged throughout, see. FIG. 3 , This is in the FIGS. 5 to 9 just for reasons the clarity not shown consistently. Which type of insulating material 6 is used, is known in the art and therefore not part of the present invention.

The base member 11 is a reinforced concrete support. The construction of such a reinforced concrete support is in FIG. 6 shown. Shown are in addition to the mounting shoes 31, the Längsbewährungen 50 of the support 11 and the bracket 51. Alternatively, it may be in the base member 11 is also a reinforced concrete wall or the like.

In FIG. 7 is a further embodiment of the invention shown in which the connection of the beam 10 is made to the base member 11 in a modified manner. Instead of the tension rod 30, a beam shoe 37 is provided in the region of the tension belt 20 of the beam 10, the end plate, which may be provided to compensate for assembly tolerances again with a hole or slot, does not protrude into the gap 5 between the base 10 and base member 11, but terminates with the beam 10, wherein the beam shoe 37 is arranged in a recess 7 provided for this purpose in the beam 10. On the side of the base member 11 a reinforcement screw 38 is provided with sleeve, to which a transition piece 39 with two-sided threads can be connected, which establishes the connection to the beam shoe 37 by means of appropriate fasteners (nuts, washers, etc.).

In the region of the pressure belt 21 of the beam 10, in turn, a pressure frame 32 is provided. This is in the base member 11 but not in this case on a console 33. Instead, for the pressure belt 21 is a inside the Base member 11 arranged Auflagertasche 40 is provided. Alternatively to the in FIG. 7 also shown bearing bag 41 can be used with threaded sleeve for the pressure belt 21, see FIG. 10 ,

At the in FIGS. 5 to 7 illustrated embodiments of the invention, the entire construction, but in any case the reinforced concrete auxiliary components 10 and the reinforced concrete base member 11 free of in situ concrete and / or Ortbetonverguß. In other words, these are prefabricated components. The ancillary components, in this case the joists 10, can - as far as the pressure belt 21 is concerned - but also be designed as semi-finished parts. The tension belt 20 of the auxiliary components can then be carried out by the customer in situ concrete.

Another embodiment of the invention is in FIG. 8 shown. Unlike in the embodiments described above, the connection is now not only between the beam 10 and a precast formed as a base member 11. Instead, the beam 10 with both the base member 11, as well as with an in-situ concrete component, here one on the base member 11 arranged Ortbetondecke 12, connected.

In the region of the tension belt 20 of the beam 10, a tension rod 42 is provided for this purpose, which projects beyond the gap 5 between the beam 10 and the base member 11 and is embedded in the Ortbetondecke 12. In the region of the pressure belt 21 of the beam 10 is, as in FIG. 6 , a pressure frame 32 is provided, which cooperates with a bracket 33 on the side of the base member 11. Again, depending on the load to be included, instead of the console 33 again Support bag 40 can be used. The pull rod 42 can be designed with or without thread.

FIG. 9 Finally, shows a further embodiment of the invention, in which on the side of the building next to the base member 11 also a Ortbetondecke 12 is involved in the construction. In this case, this embodiment differs from the embodiment described above in that the beam 10 merely serves as a pressure belt 21, while the outer component resting on the beam 10, in this case the balcony board 3, assumes the function of the tension belt 20. While in the area of the pressure belt 21, the same design measures are provided both on the side of the undercarriage 10, and on the side of the base component 11, as they are already in, for example, already FIG. 7 are shown, a conventional connection 43 is provided in the region of the tension belt 10, which connects the balcony slab 3 with the Ortbetondecke 12.

The conventional connection may be, for example, an ISOKORB from SCHÖCK or an Iso element from HALFEN-DEHA. In this embodiment of the invention, the advantages of the raised bed support of the present invention are combined with the advantages of conventional terminal solutions.

For all embodiments, it is particularly advantageous if at least the parts of the connecting elements (arms of the pressure frame 32, tie rods 30, brackets 33, etc.), which protrude from the concrete components and protrude into the intermediate space 5, are made of stainless steel , This can prevent premature aging of the connection elements by corrosion.

The embodiments described above and the connection and connection elements used therein can be combined. All in the description, the following claims and the drawings illustrated features may be essential to the invention both individually and in any combination.

LIST OF REFERENCE NUMBERS

1

Reinforced concrete wall

2

blanket

3

balcony slab

4

connection iron

5

gap

6

insulating material

7

recess

8th

(free)

9

(free)

10

Auxiliary component, beam

11

Base component, support

12

Ortbetondecke

20

Tension Strap

21

compression chord

30

tension rod

31

mounting shoe

32

printing frame

33

console

34

console

35

anchor plate

36

profile

37

joist hanger

38

screw

39

Transition piece

40

Auflagertasche

41

Auflagertasche

42

tension rod

43

conventional connection

Claims (9)

1. A reinforced concrete structure for a building, comprising at least one reinforced concrete base component (11), comprising an outer component (3) arranged on the at least one reinforced concrete base component (11) and comprising a number of reinforced concrete auxiliary components (10) spaced apart from one another and connected at least to the at least one reinforced concrete base part (11) in a thermally isolated manner, on which reinforced concrete auxiliary components the outer component (3) rests, characterised in that the number of reinforced concrete auxiliary components (10) as well as the at least one reinforced concrete base component (11) are precast elements.
2. The reinforced concrete structure according to claim 1, characterised by bearing the number of reinforced concrete auxiliary components (10) on the at least one reinforced concrete base component (11).
3. The reinforced concrete structure according to claim 2, characterised in that the bearing does not occur in the plane of the outer component (3).
4. The reinforced concrete structure according to any one of claims 1 to 3, characterised in that the number of reinforced concrete auxiliary components (10) each comprise a pressure frame (32) for bearing on the at least one reinforced concrete base component (11).
5. The reinforced concrete structure according to claim 4, characterised in that the pressure frame (32) forms a load transferring triangle.
6. The reinforced concrete structure according to any one of claims 1 to 5, characterised in that the at least one reinforced concrete base component (11) and the number of reinforced concrete auxiliary components (10) are spaced apart from one another.
7. The reinforced concrete structure according to claim 6, characterised in that the distance (5) between the at least one reinforced concrete base component (11) and the number of reinforced concrete auxiliary components (10) is filled with an insulating material (6).
8. The reinforced concrete structure according to any one of claims 1 to 7, characterised in that the number of reinforced concrete auxiliary components (10) or the outer component (3) is/are connected to at least one in-situ concrete component (12) in a thermally isolated manner, said in-situ concrete component being arranged on the at least one reinforced concrete base component (11).
9. A method for constructing a reinforced concrete structure for a building, comprising at least one reinforced concrete base component (11) and an outer component (3) arranged on the at least one reinforced concrete base component (11), characterised by the following steps:

   - thermally isolated connection of a number of mutually spaced reinforced concrete auxiliary components (10) to at least the at least one reinforced concrete base component (11), and

   - placement of the outer component (3) on the number of reinforced concrete auxiliary components (10).

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