LU101699A1 - Wood / concrete composite component - Google Patents

Abstract

The invention relates to a wood / concrete composite component (1), in particular for large spans of over 8 meters. It is characteristic of the wood / concrete composite component (1) according to the invention that the composite component (1) has a lower chord (2) made of wood on which wooden webs (3, 4) protrude in the longitudinal direction of the lower chord (2), which protrude from one another are spaced so that the lower chord (2) and the spaced apart wooden webs (3, 4) have a U-shaped cross-sectional profile, that in the interior space formed by the U-shaped cross-sectional profile, a concrete web (5) oriented in the longitudinal direction of the lower chord (2) is arranged, and that an upper belt (2) made of wood rests on the wooden webs (3, 4) of the composite component (1). If the high load-bearing capacity of the wood / concrete composite component (1) according to the invention is to be additionally increased, at least one lower tension (6, 7) can be provided, which on both sides with its end regions on an upper flange (8) made of wood and in the one between the End areas of the at least one lower tension (6, 7) on the lower chord (2) is held. The components of the wood / concrete composite component (1) according to the invention made from wood can also be made from suitable wood-based materials and in particular from glued wood, such as glued laminated timber (BSH), cross laminated timber (BBH), laminated veneer lumber (LVL) or cross-glued single-layer panels (CLT) ) are produced (see Fig. 1)

Description

BL-5132 LU101699. Wood / concrete composite component; The invention relates to a wood / concrete composite component, in particular for large spans of over 8 meters. | It is already known to manufacture the ceilings of a building in a wood / concrete composite construction. A - wooden beam ceiling or a cross-laminated timber ceiling with a top; lying concrete slab made of in-situ concrete connected in such a way that the | Concrete slab the compressive force and the wooden substructure the | Pulling force takes over. These layers are sheared together using mouths, screws and special shear connectors. f The advantages of this wood / concrete composite construction are those in the | Compared to a wooden ceiling, higher load-bearing capacity - in addition, this wood / concrete composite construction is characterized by; building physics advantages in fire and noise protection as well.

by a very high horizontal rigidity of the ceiling for the bracing of the building. In contrast, the disadvantages of this previously known design are not insignificant. For the application of the concrete, the ceiling has to be poured over all floors like a usual filigree ceiling in a solid construction and harden for several days. In addition, by applying the concrete layer from in-situ concrete, a lot of water is in this. Ceiling structure introduced, which contradicts the dry wood construction. The sealing must therefore be carried out very carefully and is therefore complex. The reinforcement for the concrete slab must be stored and processed in the storeys, which further restricts the available space. Due to the usual solid design of the composite component, its cross-section cannot be used for the building services required today, which is why an LU101699 a additional suspended ceiling is necessary. ; You therefore also have prefabricated composite components | created, designed for example as a composite beam. are (cf.

DE-A-804036). The previously known composite girder has Ë a wooden upper and lower chord, which by a; Concrete footbridge are interconnected.

In order to rule out mutual displacements of the straps and the concrete web, the wooden straps are on their sides facing the concrete web. provided with mouths or the like depressions in which the concrete of the web engages.

The shear forces are mainly absorbed by the engagement of the concrete footbridge in the recesses of the wooden footbridges.

É The fundamental disadvantage of this previously known wood / concrete | Composite components, however, always lie within the limited span of these composite components, since, as in solid construction, spans over 8 meters are not possible without pre-tensioning, © because otherwise the bending of the composite components is too great and Ë the construction becomes uneconomical.

In addition, the formwork effort has a disadvantageous effect, since the cross-section | cannot be used as a finished raw ceiling. . With the multi-storey residential and commercial buildings | For the flexible floor plans required, however, a design of the floor slabs that is as free of beams and columns as possible and thus spans of over 8 meters is decisive for a | economic solution. ; 30th There is therefore the particular task of creating a wood / concrete composite component of the type mentioned, with | which the construction of a structure can be simplified and accelerated and with which, for example, a resilient | Floor slabs can also be designed with spans greater than 8 meters.

LU101699; The inventive solution to this problem consists in the. Features of the applicable patent claim 1. The composite component according to the invention has a lower chord made of ° wood on which wooden webs i protrude in the longitudinal direction of the lower chord, which are spaced apart such that the] lower chord and the spaced-apart wooden webs a U- | have a shaped cross-sectional profile.

If here, a for example in connection with the lower chord and / or the | Wooden bridges, which is referred to as wood, also include suitable wood-based materials and | understood in particular glued wood, such as glued laminated timber (BSH), laminated veneer lumber (LVL or FSH) or | Cross laminated timber (BBH). An upper belt rests on the wooden webs of this composite component.

The top chord is also made of wood, with the. The term wood as well as suitable wood-based materials and especially glued wood, such as | Cross laminated timber (BBH), glued laminated timber (BSH), or. Laminated veneer lumber (LVL or VSH) should be understood.

The | For example, the upper chord made of cross laminated timber (BBH) is placed on the webs connected to the lower chord and | can be glued and / or screwed to the wooden bars.

The interior 3 of the wood / concrete composite component according to the invention, formed by the U-shaped cross-sectional profile, thus forms a mold cavity into which the concrete required for the concrete pier is introduced in the factory or alternatively on the construction site. without the need for a complex seal against | the wooden construction elements or a crack during assembly 0 would be required.

The for | conventional reinforced concrete reinforcement must be inserted into the concrete walkway,. before the concreting of the concrete walkway in due time, possibly also after the building has been completed:

Interior of the wood / concrete composite component according to the invention LU101699 | he follows.

This allows waiting for the concrete to harden | omitted, which would otherwise hinder construction progress. ] The concreting of the concrete walkway in the U-shaped cross-sectional profile of the | Composite component does not require a specialist company, but can be carried out by each company itself after: instruction.

For the production of the composite components according to the invention; no special work required, rather these can; Composite components also from a timber construction company itself. getting produced.

With the help of the | Composite component according to the invention now also in timber construction; Load capacities possible that would otherwise be achievable in solid construction; are.

Since the wood / concrete composite component according to the invention in | its interior has the concrete walkway as a supporting element, | are possible on floor slabs with spans ‘over 8 meters, A for example of 12 meters, as previously only possible with; With the help of prestressed concrete boards.

There is also | A fire protection REI 90 without fire protection cladding is possible and 'the technical building equipment is independent of the supporting structure: can be planned.

Although with the help of the wood / concrete | Composite component enables significantly larger spans | than was previously the case with the | Constructions was possible and although the wood-concrete composite component according to the invention has a high load-bearing capacity | characterized, which is comparable with the load-bearing capacity of solid ceilings 2, has a wooden with the help of the invention. Floor slab made of concrete composite components compared to | a quarter of the weight of a solid ceiling.

Thereby | due to the high proportion of wood in the wood / concrete | Composite component also a CO, reduction and an improved | Sustainability achieved .. With the help of the | Wood / concrete composite component is the creation of a | Structure simplified and accelerated, so that within | For example, a resilient floor slab, even with spans greater than 8 meters, can be implemented in a short time.

LU101699] The high load-bearing capacity of the wood / concrete composite component according to the invention is additionally favored if | at least one lower tension is provided, the end regions of which are attached to an upper belt made of wood on both sides | and in the section of the | located between the end regions at least one lower tension is held on the lower chord.

To | To limit the deflection, can in the inventive wood | / Concrete composite component at least one sub-tension provided | be that on both sides with their end areas at the top chord and in | the section of the | located between the end regions at least one lower tension is held on the lower chord.

There ; the generated by the at least one undervoltage | Pretensioning force in the upper belt of the inventive wooden | / Concrete composite component is introduced, the problem | of those that arise with the known prestressed constructions and especially with hollow pre-stressed concrete boards Marginal moments.

A defined bias is applied by the at least one undervoltage, whereby the composite cross-section of the wood / concrete | Composite component according to the calculations by the deflecting forces; ~ is increased ™ and therefore excessive.

By a ; Subsequent further pre-tensioning on the finished wood / concrete composite component, an exact adjustment of the composite components used for a floor slab can be achieved.

Such an undervoltage can be dispensed with if necessary | if the wood / concrete composite component according to the invention | should be used with a span of less than 8 meters | or if, even with larger spans, a particularly high | Resilience is not required. | In order to put the concrete required for concreting the concrete bridge into the | Interior formed by the U-shaped cross-sectional profile | To be able to fill in easily, it is advantageous if this consists of:

U-shaped LU101699 | formed by the lower chord and the wooden webs Cross-sectional profile is designed to be open at the top. | So that a space-saving use of the inventive. Wood / concrete composite components is also favored, A it is advantageous if in the U-shaped | Cross-sectional profile limited interior of the composite component. reinforcement is provided for the concrete walkway.

The reinforcement | therefore does not have to be stored on the floors and processed on the construction site itself.

In order to pass on the thrust and compressive forces acting on the wood / concrete composite component, it is advantageous if the concrete web forms a shear bond with the lower chord and / or the upper chord. . To the U-shaped cross-sectional profile formed from the lower chord and the wooden webs despite the on the wooden webs; The upper chord should be designed to be open at the top and, if necessary, to finish the | To be able to fill the concrete required of the concrete bridge into the interior of the concrete composite component, it is advantageous if at least one filling opening for filling in the upper flange; of the concrete forming the concrete web is provided. 2 Here, a preferred embodiment according to FIG The invention provides that the shear connection between the upper chord and the concrete web by means of the at least one filling opening. protruding concrete web is formed or supported.

Ë Additionally or instead it can be advantageous that the =. Shear connection between the lower chord and / or upper chord by means of A Kerven in the lower chord or

Upper chord is formed or supported by A.

The mouths in the lower and upper chords | are roughly in the same places of the lower and upper chords. provided and establish the shear connection between the concrete walkway | and the upper or lower wooden chord.

LU101699 | In order to attach the components of the wood / concrete composite component according to the invention to the; To be able to deliver to the construction site, and in order to additionally reduce the manufacturing effort for the completion of the wood / concrete) composite component according to the invention, it is! advantageous if the concrete walkway is made of in-situ concrete and / or: self-compacting concrete.

The completion of the wood / concrete composite component according to the invention at the construction site itself is favored if: the interior is designed as a casting mold for the concrete footbridge and if the interior space bounded by the lower flange and the wood webs is resolved at its front ends oriented transversely to the longitudinal extension of the composite component is.

Thus, the in-situ concrete must be poured into the interior space provided with the concrete reinforcement on the construction site, possibly only after the building has been completed, in order to | after the concrete has hardened, the | Train concrete walkway. | One with the help of the wood / concrete | The floor slab created with composite components can be Ë easily produced and integrated into the structure if | the upper chord protrudes over the cross-sectional profile formed by the lower chord and the wooden webs and if the | protruding end areas of the upper flange each have a support for | form the composite component.

The composite component must therefore be marked with | the protruding end areas of its upper chord | only on a paragraph of the | Structure can be placed in order by stringing several | such composite components to finish the required floor slab | without the need for a complex seal or a | Absprung would be required. |

A preferred embodiment according to the invention provides; that the at least one sub-tension as a steel rod; is formed, which is preferably made of a high-strength; Bar steel is made. ; A preferred further development according to the invention provides that / that the at least one lower tension on the upper chord on at least | one of its end regions by means of at least one; Support bracket, a bracket or similar anchor held | is.

By means of this anchor, designed for example as a steel bearing bracket, the desired pretensioning force is stored in the: upper flange of the wood / concrete composite component according to the invention, so that the problem of the known; There are no marginal moments occurring in prestressed structures.

Such an anchor also makes it possible to lay the composite component according to the invention by means of the end regions Ë provided on the upper chords and serving as supports.

Therefore, lintels and joists into the ceiling | integrated and, in contrast to the ‘usual wood and wood-concrete composite ceilings, can be made flush with the ceiling without any effort. | An embodiment is preferred in which the composite component | has at least two sub-voltages connected to at least | one of their end regions are held by means of a common anchor. | A particularly advantageous development according to the invention | provides that the composite component has at least one transverse to the | Oriented longitudinal extension of the composite component and the | Wooden walkways and the concrete walkway of the composite component | having penetrating installation channel.

There are also | several installation channels in the | Composite component possible without static disadvantages.

With the help of these LU101699 installation ducts, which are integrated in the composite component according to the invention, the ceiling space between the upper flange and; Lower chord for installations of the building services in longitudinal and | Cross direction fully usable.

In the case of a completed with the aid of the composite components according to the invention; Floor ceiling can therefore be dispensed with an elaborate, suspended ceiling.

A particularly advantageous embodiment according to the;

The invention provides that by means of several, 1l & ngsseite! adjoining composite components a building ceiling | can be produced. ; Developments according to the invention result from:

the following description of an exemplary embodiment according to the invention in conjunction with the claims and)

the drawing.

The invention is based on a; preferred embodiment described in more detail. ;

It shows:] FIG. 1 a wood / concrete composite component shown in a perspective side view, with à

With the help of several |

Composite components easily create a floor | can be produced:

FIG. 2 shows the composite component from FIG. 1 in a cross section,

3 shows the composite component from FIGS. 1 and 2 in one | Longitudinal section, with the composite component in Fig. 3 | resting on both sides on a building shoulder or the like | and with the protruding |

End areas of an upper flange of the composite component as]

Serve supports, and |

LU101699 | 4 shows the composite component from FIGS. 1 to 3 in one. Top view of the top chord, with the top chord in.

Area one through the lower chord and the | Wooden webs connecting the lower chord to the upper chord | formed interior is shown transparent. .

In FIGS. 1 to 4, a wood / concrete composite component 1 is shown in) different views. With the help of several Ë such, longitudinally adjoining composite components: the floor slabs in ’a multi-storey residential building or commercial building can be created quickly and easily. 5 The wood / concrete composite component shown here is characterized by a high load capacity, even with large spans of over 8 meters ÿ. The composite component 1 has a lower chord 2 made of E glued laminated timber. On this lower chord 2 stand in | Longitudinal direction of the lower chord 2 wooden webs 3, 4 in front of the | are spaced from each other so that the lower chord 2 and the 7 spaced apart wooden webs 3, 4 form a U-shaped | Have cross-sectional profile. The one by the U-shaped | Cross-sectional profile formed interior forms a cavity in: which the concrete required for a concrete walkway 5 in the factory or 5 alternatively on the construction site can be introduced without. that an elaborate seal against the wooden structural elements; 2, 3 and 4 or a crack of the composite component 1 during assembly 2 is required. In the interior formed by the lower chord 2} and the wooden webs 3, 4 there are also two | Undervoltage 6, 7 provided, which on both sides with their É end regions on an upper belt 8 and in the one between the | End areas of the lower voltages 6, 7 on the | Lower chord 2 are held. , The lower chord 2 forms the U-shaped LU101699 | open towards the top by screwing and / or gluing | to the wooden webs 3, 4 Cross-sectional profile.

In the U-shaped and the interior of the; The cross-sectional profile forming the composite component 1 is inserted into a conventional reinforced concrete reinforcement.

In the U-shaped cross-sectional profile are the two, the undervoltage 6, 7 | forming steel bars in the form shown so installed, | that after completion of the composite component 1 this | Undervoltages 6, 7 can be prestressed in such a way that a calculated over-elevation of the composite component 1 | adjusts.

The top chord 8 | is on the wooden webs 3, 4 placed, which is preferably made of cross-laminated timber.

The upper belt 8 is glued and / or screwed to the wooden webs 3, 4.

In the upper flange 8 there is at least one filling opening 9 and preferably several filling openings 9, which are used for the introduction of the for the concrete web 5 | required concrete.

The concrete required for the concrete web 5 is poured into the mold cavity formed by the interior space with a U-shaped cross-section in such a way that the | Concrete web 5 after hardening also in the at least one | Filler opening 9 engages.

The filling openings | 9 after the concrete required for the concrete bridge 5 has hardened | partially the shear connection between the concrete web 5 and the | Upper chord 8.

In addition, in the upper belt 8 and in the lower belt 2 there are, for example, 4 cm deep and approximately 25 cm long mouths or | the same wells provided on the upper belt 8 and on | Lower chord 2 are arranged approximately at comparable locations.

The arrangement of the cocks 10 | and the filling openings 9 is preferably | provided according to the static load on the composite component 1.

A simple transport of the composite component 1 to | Construction site and the simple and rapid assembly of a floor slab with the aid of the composite components 1 is made easy if the concrete web 5 provided in the composite components 1 is made of | In-situ concrete and / or made of self-compacting concrete; is.

For this purpose, the interior of the composite component 1 is as'

Mold or promnest formed for the concrete pier 5.

To get the | y101699 | Sealing of the cavity serving as the concrete pier 5; To facilitate the interior, is the interior bounded by the lower chord 2 and Aie wooden webs 3, 4 at its transverse to;

Longitudinal extension of the composite component 1 oriented a front ends formed closed. |

In Figs. 1 and 3 it can be seen that the upper chord 8 ‘over | that formed by the lower chord 2 and the wooden webs 3, 4:

Cross-sectional profile protrudes and that the protruding. End regions of the upper chord 8 each form a support for the / composite component 1.

For this purpose, the end areas of the upper flange 8, which serve as supports, each rest on a shoulder 12, 13 provided on the walls of the building. |

In FIGS. 1, 2 and 4 it can be seen that the undervoltage |

6, 7 are held on the upper belt 8 at their end regions by means of a 'catch, a support bracket or the like anchor 14'.

The two undervoltage 6, 7 are on;

their end regions in each case by means of a common anchor 14 held.

The designed as steel bars and made of high-strength | Undervoltages 6, 7 produced by bar steels are in the | Anchors 14 anchored and secured.

The anchors 14 are in | Open cutouts on the edge, also used as supports'

Serving end regions of the upper belt 8 held.

The . Composite component 1 can be installed in the factory or on the construction site without further support and without | further cracks are concreted.

The filling openings 9 on the top side provided in the upper belt 8;

It is possible, the composite cross section of the composite component 1 ê after the hardening of the concrete required for the concrete web 5; to tension again to such a well-defined one; to obtain additional elevation of the composite component 1. : This exaggeration can be interpreted in such a way that the |

Dead weight of the composite component 1 caused deflection in} Bf

13 | the center of the field is eliminated. LU101699: Since the interior space, essentially formed by the lower flange 2 and the wooden webs ° 3, 4, is the mold cavity for the concrete web 5 | forms, only a small amount of water is produced. By ; The composite component 1 can also obtain its high proportion of wood from | are manufactured by a timber construction company, whereby for | the concreting of the concrete web 5 in the composite component 1 none | Specialist company is required, but can be carried out by each 2 company itself after instruction. Since no complex: sealing required. is and there is a spray of the. Composite component 1 during assembly and curing of the | Concrete web 5 is not required, is the one for mounting the | Composite component 1 required little space at the construction site. Since the reinforcement required for the concrete web 5 can already be inserted into the interior of the composite component 1,. can be an additional reinforcement on site at the construction site; avoid. Since the concreting of the concrete footbridge 5 can also take place after the building has been completed and there is waiting.

the hardening of the concrete walkway 5 is omitted, the construction progress is not hindered. \ E Since the pre-tensioning force of the under-tensioning 6, 7 by means of the anchors 14, 15 designed as a steel bearing bracket are introduced into the upper flange 8, the known | marginal moments occur in prestressed structures. By | the anchors 14, 15 | formed here as a steel bearing bracket can the composite component 1 at the end regions of the upper chord 8; be placed on both sides. This can cause falls and.

Beams in the with the help of such composite components 1 | manufactured ceilings integrated and in contrast to usual | Wood and wood-concrete composite ceilings flush with the ceiling without any effort | are executed. In Figure 3 it can be seen that the | Composite component 1 at least one and preferably at least | two, transversely to the longitudinal extension of the composite component 1 |

14 A oriented and the wooden walkways 3, 4 and the concrete walkway 5 of the LU101699. Has composite component 1 penetrating installation channels 16 ÿ. The integration of these installation channels 16 in the | Composite component 1 is possible without static disadvantages. Due to the already in the composite component 1 according to the invention | integrated installation channels 16 and through the remaining between the Ë wooden webs 3, 4 of adjacent composite components 1 | Interstices opens up the possibility of these; Ceiling cavities between upper chord 8 and lower chord 2 for 4 installations of the building services in the longitudinal and transverse direction of the | Full use of the floor slab. Thus, on a complex,. suspended ceiling can be dispensed with. A preferred use of the composite component 1 shown here provides that several. composite components 1 abutting one another along the length of a © building ceiling can be produced. With the help of the composite component 1, floor slabs with spans over 8 meters and, for example, 12 | Meters. This is used in the composite component 1 | integrated concrete footbridge 5 as a supporting footbridge To limit the.

‘Deflection of the composite component 1 is determined with the help of the | Undervoltage 6, 7 reached a bias. The prestress applied by the 0 undervoltage 6, 7, through which the composite cross-section according to the calculations in the sequence of; Deflection forces are pushed up, can be repeated again after the concrete web 5 has hardened, in order to achieve an exact adjustment | of all composite components 1 used for the floor slab to P reach. The concreting of the | Concrete footbridge 5 can follow not only in the factory, but also on the construction site without sprouting during assembly. Several installation channels 16 | are in the composite component 1 planned, which will integrate the building services into the | Much simplify the ceiling. The | Composite component 1 allows significantly larger spans of over 8 meters than was previously possible with the LU101699 | in timber construction available constructions was the case.

A high | Load capacity achieved, the composite component 1 only about; a quarter of the weight of a comparable solid ceiling. having.

Due to the high proportion of wood in its wooden elements 2, 3, | 4 and 8, a CO, reduction and an improved | Achieve sustainability.

Since only a little water is required and since the composite component 1 can be additionally stiffened by the under-tensions 6, 7, only the slightest deformations are to be expected.

The construction height of the floor slab formed from several such composite components 1. can - contrary to known statements - both in the longitudinal direction of the composite components 1 and transversely thereto, also | can be used subsequently for the building services.

The composite component 1 shown here makes it possible to achieve load-bearing capacities that are comparable to those of the solid construction | are comparable.

Spans are also possible, which | were previously only achievable with prestressed concrete boards.

The floor slab created with the help of such composite components 1 is characterized by a high level of fire protection without | an additional fire protection cladding would be necessary.

The TGA can be planned independently of the structure.

Through the | significantly lower load of the 1. The floor slab created enables significant savings to be made on the beams and foundations in the basement or the | Reach underground car parks.

Since load-bearing inner walls can be saved due to the large achievable spans, the 2 building constructed with the help of the composite components 1 is characterized by maximum flexibility. 0

Claims (17)

16 | Claims LU101699 | 1. Wood / concrete composite component (1), especially for large | Spans of over 8 meters, characterized by | that the composite component (1) has a lower flange (2) made of wood | has, on which in the longitudinal direction of the lower chord (2) | Wooden webs (3, 4) protrude from each other | are spaced apart that the lower chord (2) and the | spaced apart wooden webs (3, 4) a U-shaped | Have cross-sectional profile that in the U- | shaped cross-sectional profile formed in an interior; Longitudinal direction of the lower chord (2) oriented concrete web | (5) is arranged, and that on the wooden webs (3, 4) of the; Composite component (1) rests an upper belt (8) made of wood. ; 2. Composite component according to claim 1, characterized in that; that at least one lower tension (6, 7) is provided, which is held on both sides with its end regions on the upper flange (8) and in the section E of the at least one lower tension (6, 7) on the lower flange (2) A between the end regions is. 3. Composite component according to claim 1 or 2, characterized | marked that the from the lower chord (2) and the | Wooden webs (3, 4) formed U-shaped cross-sectional profile is designed to be open at the top. 4. Composite component according to one of claims 1 to 3, characterized in that the upper belt (8) is connected to the wooden webs (3, 4), preferably screwed and / or; glued, is. É. 5. Composite component according to one of claims 1 to 4, characterized in that in the interior of the U-shaped cross-sectional profile delimited, eee it Composite component (1) reinforcement (11) for the concrete walkway LU101699 | (5) is provided. | 6. Composite component according to one of claims 1 to 5, characterized | marked that the concrete web (5) with the lower chord | (2) and / or the top flange (8) forms a shear assembly. | 7. Composite component according to one of claims 1 to 6, characterized in that in the upper flange (8) at least one | Fin filling opening (9) for filling in the concrete bridge (5) | forming concrete is provided. | 8. Composite component according to one of claims 1 to 7, characterized in that the shear connection between the upper chord | (8) and concrete bridge (5) by means of the at least one | Fin filling opening (9) formed projecting concrete web (5) | or is supported. 9. composite component according to one of claims 1 to 8, thereby | characterized in that the shear connection between lower chord (2) and / or upper chord (8) is formed or supported by means of mouths in the lower chord (2) or upper chord (8) | is. | 10. Composite component according to one of claims 1 to 9, characterized in that the concrete web (5) is made of in-situ concrete and / or of self-compacting concrete. 11. Composite component according to one of claims 1 to 10, characterized | characterized in that the interior is designed as a mold for the concrete bridge (5) and that the through the. Lower chord (2) and the wooden webs (3, 4) delimited the interior space | at its transverse to the longitudinal extension of the composite component | (1) oriented front end is closed. | . 12. Composite component according to one of claims 1 to 11, characterized LU101699 | marked that the upper belt (8) over the by the | Lower chord (2) and the wooden webs (3, 4) formed | Cross-sectional profile protrudes and that the protruding | End area of the upper flange (8) each have a support for the | Form composite component (1). | 13. Composite component according to one of claims 1 to 12, characterized | characterized in that the at least one lower tension (6, | 7) is designed as a steel rod, which is preferably made of | a high-strength steel bar is made. | 14. Composite component according to one of claims 1 to 13, characterized | characterized in that the at least one lower tension (6, | 7) on the upper belt (8) at at least one of its end regions. is held by means of a support bracket, a lug or 0 the like anchor (14, 15). 0 15. Composite component according to one of claims 1 to 14, characterized in that the composite component (1) has at least two sub-voltages (6, 7) which are held at at least one of their end regions by means of a common anchor (14, 15). ‘ 16. Composite component according to one of claims 1 to 15, characterized in that; characterized in that the composite component (1) at least one transversely to the longitudinal extension of the composite component (1). oriented and penetrating the wooden webs (3, 4) and the concrete web (5) of the composite component (1) | Has installation channel (16). 17. Composite component according to one of claims 1 to 16, characterized. characterized in that a structural ceiling or floor ceiling can be produced by means of several composite components (1) abutting one another along the length a. j "0e -