DE102009028226A1 - Building element e.g. ridge roof, is designed such that intermediate space is formed between two slabs formed from concrete, where slabs are made gas-tight and intermediate space is bounded by peripheral seal - Google Patents

Abstract

The element is designed such that an intermediate space (3) is formed between a load-bearing slab (1) and another slab (2), where the slab is mounted parallel to the load-bearing slab. The slabs are formed from concrete. The slabs are made gas-tight and the intermediate space is bounded by a peripheral seal. A spacer is provided in the intermediate space to support the slab against the load-bearing slab. The seal includes a circumferential intermediate space wall (4) produced from gas-tight concrete or composite material. The element is constructed as a prefabricated element.

Description

The The invention relates to a concrete element according to the preamble of the claim 1. It also relates to a method for producing the concrete pavement using the concrete element.

A generic concrete element is from the EP 1 146 180 A1 known. It is a rigid concrete ceiling element, which can be installed without the provision of a Unterjochung over a large span. For the production of a concrete ceiling such concrete ceiling elements are placed randlich on walls and then poured over with concrete. The concrete ceiling elements can often be supported on the walls only on a marginal strip of 3 to 4 cm width. Especially with large spans of z. B. more than six meters because of the high weight the risk that the strength of the wall and / or the concrete ceiling element in the support area is not sufficient and there is a break.

task The invention is to the disadvantages of the prior art remove. It should be specified in particular a concrete element, with that without providing a Unterjochung concrete ceilings with a high Span can be produced safely.

These The object is achieved by the features of claims 1 and 10 solved. Expedient refinements result from the claims 2 to 9 and 11 to 13.

To According to the invention is a concrete element with a two opposing first and second side walls having provided concrete slab, on the upper side in parallel Arrangement to the first side walls made of concrete rigid support elements are molded, with terminal Sections of the support elements on both sides over the second side walls of the concrete slab protrude and a bottom of the concrete slab and a bottom of the protruding Portions of the support elements form a common plane. - In order to is an easy and inexpensive way to enlarge Support surface of the concrete elements provided on a wall. To increase the contact surface is according to the subject invention, a projecting portion the support elements proposed. This will be a special stable and break-proof laying of rigid concrete elements reached. The load acting on the wall is not only marginal, but also removed to central areas of the wall. This will be a marginal demolition of the wall or the concrete slab avoided. Apart from that, the supernatants allow terminal sections the preparation of a compound with corresponding sections of an opposing concrete element or with similar protruding sections, which may be provided on the wall on which the concrete element according to the invention supported becomes.

To an embodiment are end faces of the protruding portions smooth. The front sides can with the front sides the sections of the support elements of a further opposite Concrete ceiling element installed on joint or offset become.

Conveniently, is a reinforcing framework inside each support element intended. The Armierungsgerüst extends advantageously into the protruding sections. The provision of such Armierungsgerüste ensures a high bending stiffness of the concrete elements. It becomes a particularly strong connection of the protruding sections reached with the concrete slab.

To a further advantageous embodiment of the invention is provided in that at least the carrier elements are made of fiberglass concrete. Thus, the support member excellent rigidity be lent. This is especially true when in the carrier element In addition, a reinforcing skeleton is provided.

The Sections may be around 2 to 20 inches, preferably around 8 to 16 cm, extend beyond the second side wall.

In an upper side of the carrier elements are expediently at regular intervals recesses intended for insertion of a reinforcing grid. On other side walls the carrier elements can grooves for insertion be provided by shear plates. Furthermore, the support elements perpendicular to their longitudinal extent extending breakthroughs exhibit.

Especially can any projecting portion of a support element have a breakthrough. This allows insertion a clamping element in the protruding portions of two adjacent Concrete elements. With such a clamping element can adjacent Concrete elements are clamped together. In the clamping element For example, it can be a threaded bolt with nuts or Like. Act.

The apertures may have a rectangular, round, slit-like or triangular breakthrough surface. At least in part of the apertures, a partially delimiting surface may be formed by the top of the concrete slab. The aforementioned features are particularly useful in nigen connection with an applied on the concrete element in situ concrete layer.

The further side walls of the support elements can have a corrugation, with the crests of the waves perpendicular to the top of the concrete slab. The corrugation can be circumferential from the other side walls over the top of the support element. This feature is also used a particularly intimate connection with a cast in situ concrete layer.

To Another particularly advantageous embodiment is to the first and / or second side walls of the concrete slab at least provided from the top thereof extending recess. The recess can open into a slot-like recess. The slot-like recess runs parallel to the longitudinal edges the side wall. The walls of the slot-like recess are suitably formed of metal. It can on a side wall several each in a slot-like recess opening recesses be provided. At least a blanket the slot-like recess has with respect to a bottom the concrete slab on a uniform distance. When laying the Concrete elements are their side walls placed together, that the recesses face each other. This allows an insertion of a z. B. trained in the manner of a double wedge Justierelements in the opposite slot-like Recesses. The adjusting element can be clamped so that one raised the two adjacent concrete elements and thus a possible vertical offset of the undersides of the concrete elements is compensated.

To a particularly advantageous embodiment of the invention are the Carrier elements between the concrete slab and a parallel provided attached further concrete slab. The further concrete slab can be attached to the support elements. But it can Also be that the other concrete slab with other support elements is stiffened. In any case, between the concrete slab and the further concrete slab formed a cavity. A circumferential opening edge between the concrete slab and the other concrete slab can after a further embodiment, vacuum-tight and a closed between the concrete slab and the other concrete slab formed cavity be evacuated. Such a concrete element is characterized by a excellent thermal insulation ability. The vacuum-tight closure between the concrete slab and the other For example, concrete slab can pass through into the concrete slab and the other concrete slab cast in stainless steel sheets be made which are welded together. In this embodiment the concrete element can be used as wall or as ceiling or Roof element can be used.

To In another embodiment, the concrete element is a concrete ceiling element formed, wherein the concrete slab a concrete formwork panel is. Such a concrete ceiling element is used to produce a Concrete pavement cast with in-situ concrete on site.

To The invention further provides a method for Production of a concrete floor using an inventive Concrete ceiling element provided with the following steps.

Placing the concrete ceiling element on an upper side of a wall such that the protruding portions of the support elements and a marginal strip of the concrete shuttering plate and rest
Pouring the concrete ceiling element with concrete.

With the proposed method can easily produced under omission of any subjugation concrete ceilings become. The omission of a subjugation leads to a enormous time and cost savings in the production of concrete ceilings.

Of the marginal strip may have a width of 1 to 10 cm, preferably 2 to 5 cm. The placement of the marginal strip The concrete slab ensures that poured concrete does not flow between the wall and the concrete slab. The protruding portions of the support elements are expediently over the entire surface on the wall on. This ensures good load distribution.

To In another embodiment feature, the concrete elements become such Put on the sections next to from the top of the wall protruding reinforcing loops are arranged. This allows a full-surface laying the sections on the top. According to a further embodiment, first and second concrete elements so supported on a wall that the front sides of the Sections facing each other.

To an alternative embodiment, first and second concrete elements so supported on the wall that their protruding sections offset to each other. In this case, the protruding sections engage two opposing concrete elements into each other. This can advantageously continue the bearing surface be increased to the respective concrete elements on the wall.

To Another embodiment will be with their long sides contiguous concrete elements by means of the protruding Sections passed through clamping elements together braced. The tension of the adjacent concrete elements takes place while pouring the concrete. Because of the inventively proposed Tensioning of the concrete elements it comes also by the weight of the infused concrete is not an undesirable offset the concrete elements.

following An embodiment of the invention with reference to the drawing explained in more detail. Show it:

1 a top view of a concrete element,

2 a side view according to 1 .

3 a partial perspective view of the concrete element,

4 a side view of two supported on a wall concrete elements,

5 a top view of two other supported on a wall concrete elements,

6 a top view of two other supported on a wall concrete elements,

7 a top view of another concrete element,

8th a sectional view along the section line AA in 7 and

9 a sectional view through a carrier element.

In the in the 1 to 3 shown concrete element are on a concrete slab 1 in parallel arrangement to the longitudinal walls L made of concrete support elements 2 a glove. The carrier elements 2 are at their two ends on transverse walls Q of the concrete slab 1 with a distance A out. The distance A is usually 3 to 6 cm. A bottom U _{S of} the concrete slab 1 and sub-sides U _T of beyond the transverse walls Q protruding portions X of the support elements 2 lie in the same plane. In the concrete slab 1 a reinforcement (not shown here) may be provided. Likewise, in the carrier elements 2 Armierungsgerüste be provided, which extend expediently into the over the transverse walls Q protruding portions X.

As in particular from 3 clearly shows are end faces S of the protruding portions X of the support elements 2 smooth. Side walls S _T and the tops O _{T of} the support elements 2 have a corrugation 3 on, which is formed circumferentially. The carrier elements 2 also have first breakthroughs 4 with a triangular breakthrough cross section. The first breakthroughs 4 are, inter alia, through the top O _{S of} the concrete slab 1 limited. The carrier elements 2 also have second breakthroughs 5 which are cylindrical.

From the top O _{S of} the concrete slab 1 extend in the longitudinal walls L recesses 6 towards the bottom U _S. The recesses 6 lead into slit-like recesses 7 , The slits of the slot-like recesses 7 run parallel to the top O _S. A depth of the slots is greater than a depth of the recesses 6 , For all slit-like recesses 7 are their ceilings D at the same distance A _D to the bottom U _{S of} the concrete slab 1 arranged. The ceilings D, possibly also the other walls, the slot-like recesses 7 are made of metal. These can be the slot-like recesses 7 for example, by inserting a suitable metal box when pouring the concrete slab 1 getting produced. On the side walls S _{T of} the support elements 2 are also vertical grooves 8th intended. The vertical grooves 8th are arranged so that they are the vertical grooves 8th an adjacent support element 2 are opposite. This allows insertion of (not shown here) thrust plates in the vertical grooves 8th , At the top O _{T of} the support elements 2 are also recesses 9 , which allow an insertion of reinforcing bars. Their depth is suitably between 3 and 6 cm.

In 4 For example, a wall W with a top O _{W is} shown. On the top O _W two concrete elements are supported. The concrete elements lie with a marginal strip R _S of here designed as concrete formwork panel concrete slab 1 on the top O _W on the wall W up. A width of the peripheral strip R _S is at least 2 to 5 cm, preferably 3 cm. From the concrete slab 1 are also the sections X of the support elements 2 with a distance A of 3 to 6, preferably 4 cm, forth. The proposed edition of the concrete element on the top O _{W of} the wall W ensures adequate load transfer. Canceling the wall W or the concrete element is safely avoided. Apart from that, with the proposed edition, an undesirable outflow of concrete into a region below the top O _{W of} the wall W is avoided.

5 shows two more concrete ceiling elements, which are supported marginally on the wall W. In this case, the protruding portions X are staggered, that is, the end faces S of each protruding portion X are in the vicinity the transverse wall Q of the opposite concrete element. With this arrangement, a particularly large bearing surface on the wall W can be achieved for each of the concrete elements.

At the in 6 shown embodiment, for the sake of clarity, only two concrete elements are shown, which lie with their longitudinal walls L together and are supported on the wall W. A tensioning element 10 , For example, a threaded rod is here provided by the inside protruding portions X second recesses 5 passed. The tensioning element 10 braces the adjacent concrete elements with each other. The second breakthroughs 5 can be configured here, for example, in the form of elongated holes. If opposing (not shown here) further concrete elements are arranged offset with their protruding portions X, the clamping element 10 also the second recesses 5 the staggered arranged further protruding portions (not shown here) pass through.

The 7 and 8th show another concrete element. The further concrete element is made of two concrete sub-elements, which are similar to that in the 1 to 3 shown concrete element. A lower concrete sub-element with a concrete slab 1 and cast-on support elements 2 has protruding portions X. An upper concrete part element has another concrete slab 1' with cast on it further support elements 2 ' on. Other protruding portions are denoted by the reference X '. The concrete sub-elements are arranged opposite each other so that their upper sides O _S , O _S 'are opposite to each other. The carrier elements 2 . 2 ' are offset from each other. A formed between the concrete sub-elements cavity H is circumferentially with a in the concrete slab 1 . 1' as well as the carrier elements 2 . 2 ' overlying or fitted sealing element, for. B. a cast stainless steel sheet 11 , vacuum sealed. The stainless steel sheet 11 may have a (not shown here) valve for evacuating the cavity H. That in the 7 and 8th shown further concrete element is suitable as a wall as well as ceiling or roof element.

9 shows a sectional view through a carrier element 2 , A reinforcing framework 12 has a joist 13 and two upper courses 14 on. The Oberzüge 14 extend in the vicinity of a top O _{T of} the support element. The beam 13 lies outside the carrier element 2 , It is located at the concrete element inside the concrete slab cast on it 1 ,

LIST OF REFERENCE NUMBERS

1, 1'

Concrete formwork panel

2, 2 '

support element

3

curl

4

first breakthrough

5

second breakthrough

6

recess

7

slot-like recess

8th

groove

9

depression

10

clamping element

11

stainless steel sheet

12

Armierungsgerüst

13

Beam

14

top pull

A

distance

D

blanket

Q

partition

L

longitudinal wall

S

front

W

wall

OS

top the concrete formwork panel

US

bottom the concrete formwork panel

OT

top the carrier element

UT

bottom the carrier element

ST

Side wall the carrier element

RS

edge-side strip

BS

width of the marginal strip

OW

top the Wall

AD

distance between ceiling D and underside US

X, X '

protruding section

H

cavity

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1146180 A1 [0002]

Claims (13)

Concrete element with a concrete slab having two opposing first (L) and second side walls (Q) ( 1 ), on the upper side (O _S ) in parallel arrangement to the first side walls (L) made of concrete rigid support members ( 2 ) are molded, characterized in that terminal portions (X, X ') of the support elements ( 2 ) on both sides of the second side walls (Q) of the concrete slab ( 1 ) and that a bottom (U _S ) of the concrete slab ( 1 ) and a bottom (U _T ) of the protruding portions (X, X ') of the support elements ( 2 ) form a common plane. Concrete element according to claim 1, wherein end faces (S) the protruding portions (X, X ') are smooth. Concrete element according to one of the preceding claims, wherein inside each support element ( 2 ) a reinforcing framework ( 12 ) is provided, which extends into the protruding portions (X, X '). Concrete element according to one of the preceding claims, wherein at least the carrier elements ( 2 ) are made of glass fiber reinforced concrete. Concrete element according to one of the preceding claims, the sections being from 2 to 20 cm, preferably from 8 to 16 cm, beyond the second side walls (Q) extend. Concrete element according to one of the preceding claims, each protruding section (X, X ') of a carrier element ( 2 ) a breakthrough ( 4 . 5 ) having. Concrete element according to one of the preceding claims, wherein the support elements ( 2 ) between the concrete slab ( 1 ) and a parallel attached further concrete slab ( 1' ) are provided. Concrete element according to one of the preceding claims, wherein a peripheral opening edge between the concrete slab ( 1 ) and the further concrete slab ( 1' ) vacuum sealed and a between the concrete slab ( 1 ) and the further concrete slab ( 1' ) formed cavity (H) is evacuated. Concrete element according to one of claims 1 to 6, wherein it is designed as a concrete ceiling element, wherein the concrete slab ( 1 ) is a concrete formwork panel. Method for producing a concrete pavement using a concrete ceiling element according to claim 9, comprising the following steps: placing the concrete ceiling element on an upper side (O _W ) of a wall (W) in such a way that the protruding sections of the supporting elements ( 2 ) and a marginal strip (R _S ) of the concrete formwork panel ( 1 ) and pour over the concrete ceiling element with concrete. Method according to claim 10, wherein the concrete ceiling elements are placed in such a way that the protruding sections (X) are next to reinforcing loops protruding from the top (O _W ) of the wall (W) ( 10 ) are arranged. The method of claim 10 or 11, wherein first and second concrete ceiling elements so supported on a wall (W) be that the end faces (S) of the protruding sections (X) are opposed to each other, or that their protruding Sections (X) are offset from one another. Method according to one of claims 10 to 12, wherein with their longitudinal sides (L) contiguous concrete ceiling elements by means of the projecting portions (X) guided through clamping elements 10 be tense.

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