EP2405070A2 - Steel beam for prefabricated floors - Google Patents

Steel beam for prefabricated floors Download PDF

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Publication number
EP2405070A2
EP2405070A2 EP11075119A EP11075119A EP2405070A2 EP 2405070 A2 EP2405070 A2 EP 2405070A2 EP 11075119 A EP11075119 A EP 11075119A EP 11075119 A EP11075119 A EP 11075119A EP 2405070 A2 EP2405070 A2 EP 2405070A2
Authority
EP
European Patent Office
Prior art keywords
web plate
steel beam
beam according
plate
reinforcement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11075119A
Other languages
German (de)
French (fr)
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EP2405070A3 (en
Inventor
Justus E.C.M. De Charro
Jan C.M. Van Berkel
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Deltastaal BV
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Deltastaal BV
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Publication date
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Publication of EP2405070A2 publication Critical patent/EP2405070A2/en
Publication of EP2405070A3 publication Critical patent/EP2405070A3/en
Withdrawn legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0434Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452H- or I-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/065Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web with special adaptations for the passage of cables or conduits through the web

Definitions

  • the invention relates to a steel beam for precast slabs according to the preamble of patent claim 1.
  • ceiling constructions In building construction, various methods are known for the construction of ceilings. In addition to pure wood or steel ceilings, ceiling constructions made of concrete are used in particular. For their preparation, for example, prefabricated, reinforced concrete precast ceilings are used, which are poured over after installation with in-situ concrete and connected to the carrier.
  • ceiling slabs are not laid on the upper flange of the steel girders, but the ceiling girders are arranged inside the slab, this is called flat steel slabs or even a slimfloor construction.
  • flat ceilings are only between about 20 and 30 cm high, and usually have a span between 6 and 9 m. Depending on the choice of ceiling panel types, however, spans between 3 and 10 m are possible.
  • prefabricated ceiling panels When using completely prefabricated ceiling panels (precast ceilings), the elements are placed on the bottom flange of the support. As steel beams become predominantly Double T-beam with widened bottom flange, Integrated Floor Beam (IFB), or with underfloor metal sheet, Slim Floor Beam (SFB), or also hat profiles.
  • IFB Integrated Floor Beam
  • FOB Slim Floor Beam
  • the invention is therefore based on the object to provide a steel beam for precast ceilings, which in particular has a high bending stiffness at low meter weight and allows easy connection of the precast ceiling to the carrier. Also, a fire protection coating should be easy to apply.
  • a carrier consisting of a lower flange and a web plate arranged thereon is used to solve this problem, in which the web plate is designed as a wave-shaped plate and is provided with a suitable for hooking with the reinforcement of the ceiling plate receiving device.
  • the steel beam according to the invention has significant advantages over the previously customary carriers.
  • the carrier is in this first embodiment, on the one hand inexpensive from standard steel components produced, he has by the waveform of the web plate between the straps high bending stiffness at low meter weight and can also be easily connected by an appropriate receiving device to the reinforcement of the precast ceiling.
  • the receiving device for the reinforcement can be designed according to the invention in various ways, and are adapted to the best solution for the construction task.
  • the receiving device may consist in the simplest form of introduced into the wave crests and valleys through holes into which the reinforcement of the ceiling plate can be hooked.
  • the receiving device consists of at least one respectively between the wave crests and valleys arranged and suitable for hooking with the reinforcement of the ceiling plate strut.
  • the receiving device can also consist of at least one each introduced into the wave crests and valleys through hole into which a suitable for hooking with the reinforcement of the ceiling plate strut can be introduced.
  • the struts are advantageous inserted into previously inserted aligned holes in the web plate inserted, so that they can be inserted when inserting the ceiling plate in the protruding from the precast ceiling reinforcement bracket in a simple manner.
  • two or more suitable for hooking with the reinforcement of the reinforced concrete slab struts are arranged so that a very intimate connection of the ceiling slab can be achieved on the carrier.
  • the shape of the web plate may have any wavy structure, for. B. also a trapezoidal shape. It is important in any case that the wave height and width is adapted to the static requirements of the carrier.
  • the wave-shaped web sheet itself can be cut, for example, as a strip from a corresponding wave plate or trapezoidal sheet or be bent accordingly from flat material.
  • the web plate can also be composed of welded together individual sheet metal parts.
  • the carrier may be provided in a second embodiment also with a top flange, which is divided as required or one-piece or longitudinally and provided with a gap on the web plate.
  • the gap between the two parts of the upper flange thereby improves the incorporation of the concrete when casting the carrier profile.
  • the web plate is advantageously arranged symmetrically to the central axis on the lower flange in a further embodiment of the invention.
  • the lower flange is at least as wide as the wave height of the web plate, so that a sufficiently large support for the ceiling plate is present.
  • the bottom flange may also be designed to be significantly wider in order to reduce the surface load on the bottom flange.
  • the individual components are welded together.
  • the web plate 2 is arranged symmetrically to the center axis of the web plate on the lower flange 1 and wider than the wave height of the web plate 2.
  • the upper flange 3 is integrally formed in this example and also symmetrically to the central axis of the web plate 2 thereon.
  • the wave crests and valleys of the web plate 2 are inventively provided with aligned through holes, in the horizontally offset two struts 4, 4 'are passed, can be hooked into the reinforcing bracket of a prefabricated ceiling, not shown here.
  • prefabricated ceiling is made so that they flush with the top edge of the carrier, d. H. flush with the upper flange 3. After hooking the reinforcement with the carrier, this is then cast with in-situ concrete to produce a composite.
  • FIG. 2 shows a variant of the carrier with a slotted top chord and a side end plate. The same components are marked with the same reference numbers.
  • the top flange 3, 3 ' consists of two parts, which is provided with a gap on the web plate 2, to facilitate casting with in-situ concrete and to ensure an intimate bond between the carrier and precast ceiling.
  • the carrier has laterally on the side opposite the ceiling connection side a cover plate 5, which projects at the level of applied screed, so that the carrier and applied screed flush.
  • end plate 5 serves as a lost formwork for the grouting of the carrier with in-situ concrete.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The steel girder has an under belt (1) utilized as a support, and a web plate (2) attached to the under belt. A ceiling slab is made of reinforced steel concrete and connected to the web plate, where the web plate is formed as a corrugated metallic sheet. The web plate is provided with a receiving device hooked with a reinforcement of the ceiling slab. The web plate is formed in trapezoidal shape and arranged symmetrical to the under belt. An upper belt (3) is connected with the web plate and divided in longitudinal direction.

Description

Die Erfindung betrifft einen Stahlträger für Fertigteildecken gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a steel beam for precast slabs according to the preamble of patent claim 1.

Im Hochbau sind für die Ausbildung von Decken verschiedene Methoden bekannt. Neben reinen Holz- oder Stahldecken finden insbesondere Deckenkonstruktionen aus Beton Verwendung. Zu deren Herstellung werden beispielsweise vorgefertigte, bewehrte Beton-Fertigteildecken verwendet, die nach dem Einbau mit Ortbeton übergossen und mit dem Träger verbunden werden.In building construction, various methods are known for the construction of ceilings. In addition to pure wood or steel ceilings, ceiling constructions made of concrete are used in particular. For their preparation, for example, prefabricated, reinforced concrete precast ceilings are used, which are poured over after installation with in-situ concrete and connected to the carrier.

Bekannt sind auch betonbasierte Deckensysteme, wie konventionell eingeschalte Decken, die komplett auf der Baustelle mit Ortbeton vergossen werden oder auch Systeme mit Trapezblechschalung, die zwischen den Profilen als verlorene Schalung verbleibt. Wichtig ist, dass der Kontaktbereich zwischen Profil und Beton vergossen ist, um eine Verbundwirkung hinsichtlich eines optimalen Tragverhaltens zu erzielen.Also known are concrete-based ceiling systems, such as conventionally suspended ceilings, which are completely cast on site with in-situ concrete or systems with trapezoidal sheet metal formwork, which remains between the profiles as a lost formwork. It is important that the contact area between the profile and concrete is potted in order to achieve a composite effect in terms of optimum structural behavior.

Bei der Herstellung der Decken ist es bekannt, diese z. B. als Trägerdecke auszuführen, bei der die Deckenplatte auf dem Obergurt des Trägers aufliegt. Diese Konstruktion hat jedoch den Nachteil einer vergleichsweise großen Bauhöhe und ist daher in vielen Fällen unwirtschaftlich.In the production of blankets, it is known that z. B. perform as a carrier ceiling, in which the ceiling plate rests on the upper flange of the wearer. However, this construction has the disadvantage of a comparatively large height and is therefore uneconomical in many cases.

Werden die Deckenplatten nicht auf dem Obergurt der Stahlträger aufgelegt, sondern der Deckenträger innerhalb der Decke angeordnet, spricht man von Stahlflachdecken oder auch von einer Slimfloor-Bauweise. Gegenüber den ca. 40 bis 50 cm hohen Trägerdecken sind Flachdecken nur zwischen ca. 20 und 30 cm hoch, und haben üblicherweise eine Spannweite zwischen 6 und 9 m. Je nach Wahl der Deckenplattentypen sind jedoch auch Spannweiten zwischen 3 und 10 m möglich.If the ceiling slabs are not laid on the upper flange of the steel girders, but the ceiling girders are arranged inside the slab, this is called flat steel slabs or even a slimfloor construction. Compared to the approximately 40 to 50 cm high ceiling beams flat ceilings are only between about 20 and 30 cm high, and usually have a span between 6 and 9 m. Depending on the choice of ceiling panel types, however, spans between 3 and 10 m are possible.

Beim Einsatz von vollständig vorgefertigten Deckenplatten (Fertigteildecken) werden die Elemente auf den Untergurt des Trägers aufgelegt. Als Stahlträger werden überwiegend Doppel-T-Träger mit verbreitertem Untergurt, Integrated Floor Beam (IFB), oder mit untergeschweißtem Blech, Slim Floor Beam (SFB), oder auch Hutprofile eingesetzt.When using completely prefabricated ceiling panels (precast ceilings), the elements are placed on the bottom flange of the support. As steel beams become predominantly Double T-beam with widened bottom flange, Integrated Floor Beam (IFB), or with underfloor metal sheet, Slim Floor Beam (SFB), or also hat profiles.

Nachteile der bekannten Träger sind zum Einen die im Einbauzustand zu geringe Biegesteifigkeit und die aufwändige Anbindung der Deckenplatten, beispielsweise über Anschweißen von Kopfbolzendübeln. Bei Hutprofilen besteht außerdem der Nachteil, dass der Brandschutz innenseitig nur schwer herstellbar ist und die Auflagerlast der Deckenplatte exzentrisch zur Mittelachse des Profils angreift, wodurch zusätzlich Torsionsmomente entstehen, die bei der statischen Bemessung berücksichtigt werden müssen.Disadvantages of the known carriers are on the one hand in the installed state too low flexural rigidity and the complex connection of the ceiling panels, for example by welding head bolt dowels. In Hutprofilen also has the disadvantage that the fire protection is difficult to produce on the inside and the bearing load of the ceiling plate eccentrically attacks the central axis of the profile, which in addition Torsionsmomente arise, which must be considered in the static design.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Stahlträger für Fertigteildecken anzugeben, der insbesondere eine hohe Biegesteifigkeit bei geringem Metergewicht aufweist und einen einfachen Anschluss der Fertigteildecke an den Träger erlaubt. Ebenfalls soll eine Brandschutzbeschichtung einfach aufzubringen sein.The invention is therefore based on the object to provide a steel beam for precast ceilings, which in particular has a high bending stiffness at low meter weight and allows easy connection of the precast ceiling to the carrier. Also, a fire protection coating should be easy to apply.

Diese Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst. Vorteilhafte Weiterbildungen sind jeweils Gegenstand von Unteransprüchen.This object is achieved with the features of claim 1. Advantageous developments are the subject of dependent claims.

Nach der Lehre der Erfindung wird zur Lösung dieser Aufgabe ein Träger bestehend aus einem Untergurt und einem darauf angeordneten Stegblech verwendet, bei dem das Stegblech als wellenförmiges Blech ausgeführt ist und mit einer zum Verhaken mit der Bewehrung der Deckenplatte geeigneten Aufnahmevorrichtung versehen ist.According to the teachings of the invention, a carrier consisting of a lower flange and a web plate arranged thereon is used to solve this problem, in which the web plate is designed as a wave-shaped plate and is provided with a suitable for hooking with the reinforcement of the ceiling plate receiving device.

Der erfindungsgemäße Stahlträger weist gegenüber den bislang üblichen Trägern wesentliche Vorteile auf. Der Träger ist in dieser ersten Ausführungsform einerseits kostengünstig aus Standard-Stahlbauelementen herstellbar, er weist durch die Wellenform des Stegbleches zwischen den Gurten eine hohe Biegesteifigkeit bei geringem Metergewicht auf und kann zudem durch eine entsprechende Aufnahmevorrichtung einfach an die Bewehrung der Fertigteildecke angeschlossen werden.The steel beam according to the invention has significant advantages over the previously customary carriers. The carrier is in this first embodiment, on the one hand inexpensive from standard steel components produced, he has by the waveform of the web plate between the straps high bending stiffness at low meter weight and can also be easily connected by an appropriate receiving device to the reinforcement of the precast ceiling.

Die Aufnahmevorrichtung für die Bewehrung kann erfindungsgemäß auf verschiedene Weise ausgestaltet sein, und so an die für die Bauaufgabe beste Lösung angepasst werden.The receiving device for the reinforcement can be designed according to the invention in various ways, and are adapted to the best solution for the construction task.

Die Aufnahmevorrichtung kann in der einfachsten Form aus in die Wellenberge und -täler eingebrachten Durchgangslöchern bestehen, in die die Bewehrung der Deckenplatte eingehakt werden kann.The receiving device may consist in the simplest form of introduced into the wave crests and valleys through holes into which the reinforcement of the ceiling plate can be hooked.

Alternativ besteht die Aufnahmevorrichtung aus mindestens einer jeweils zwischen den Wellenbergen und -tälern angeordneten und zum Verhaken mit der Bewehrung der Deckenplatte geeigneten Strebe.Alternatively, the receiving device consists of at least one respectively between the wave crests and valleys arranged and suitable for hooking with the reinforcement of the ceiling plate strut.

Erfindungsgemäß kann die Aufnahmevorrichtung auch aus mindestens je einem in die Wellenberge und -täler eingebrachten Durchgangsloch bestehen, in das eine zum Verhaken mit der Bewehrung der Deckenplatte geeignete Strebe eingeführt werden kann.According to the invention, the receiving device can also consist of at least one each introduced into the wave crests and valleys through hole into which a suitable for hooking with the reinforcement of the ceiling plate strut can be introduced.

Die Streben sind dazu vorteilhaft in vorher eingebrachte fluchtende Löcher im Stegblech einschiebbar angeordnet, so dass diese beim Einlegen der Deckenplatte in die aus der Fertigteildecke herausragenden Bewehrungsbügel auf einfache Weise eingeschoben werden können.The struts are advantageous inserted into previously inserted aligned holes in the web plate inserted, so that they can be inserted when inserting the ceiling plate in the protruding from the precast ceiling reinforcement bracket in a simple manner.

In einer vorteilhaften Weiterbildung der Erfindung sind jeweils zwischen den Wellentälern und -bergen horizontal oder vertikal versetzt, zwei oder mehr zum Verhaken mit der Bewehrung der Stahlbetonplatte geeignete Streben angeordnet, so dass eine sehr innige Anbindung der Deckenplatte an den Träger erreicht werden kann.In an advantageous development of the invention, horizontally or vertically offset between the troughs and -events, two or more suitable for hooking with the reinforcement of the reinforced concrete slab struts are arranged so that a very intimate connection of the ceiling slab can be achieved on the carrier.

Die Form des Stegbleches kann eine beliebige wellenförmige Struktur aufweisen, z. B. auch eine Trapezform. Wichtig ist in jedem Fall, dass die Wellenhöhe und -breite den statischen Erfordernissen an den Träger angepasst wird.The shape of the web plate may have any wavy structure, for. B. also a trapezoidal shape. It is important in any case that the wave height and width is adapted to the static requirements of the carrier.

Das wellenförmige Stegblech selbst kann beispielsweise als Streifen aus einer entsprechenden Wellenplatte oder Trapezblech geschnitten oder aus Flachmaterial entsprechend gebogen sein. Um die Anpassbarkeit an unterschiedliche statische Erfordernisse (z. B. Bauhöhe und -breite) zu gewährleisten, kann das Stegblech aber auch aus zusammengeschweißten einzelnen Blechteilen zusammengesetzt sein.The wave-shaped web sheet itself can be cut, for example, as a strip from a corresponding wave plate or trapezoidal sheet or be bent accordingly from flat material. To adaptability to different static However, to ensure requirements (eg height and width), the web plate can also be composed of welded together individual sheet metal parts.

Wenn es die statische Bemessung erfordert und ein deutlich höherer Biegewiderstand erzielt werden muss, kann der Träger in einer zweiten Ausführungsform auch mit einem Obergurt versehen sein, der je nach Erfordernis einteilig oder in Längsrichtung geteilt und mit einem Spalt versehen auf dem Stegblech angeordnet ist. Der Spalt zwischen den beiden Teilen des Obergurtes verbessert dabei die Einbringung des Betons beim Vergießen des Trägerprofils.If it requires the static design and a much higher bending resistance must be achieved, the carrier may be provided in a second embodiment also with a top flange, which is divided as required or one-piece or longitudinally and provided with a gap on the web plate. The gap between the two parts of the upper flange thereby improves the incorporation of the concrete when casting the carrier profile.

Gegenüber Hutprofilen besteht ein weiterer Vorteil darin, dass bei mittiger Anordnung des Stegbleches auf dem Untergurt eine exzentrische Krafteinleitung durch die Deckenplatte und damit die Entstehung von Torsionsmomenten weitestgehend vermieden und damit die statische Bemessung günstiger wird.Compared with hat profiles, another advantage is that with central arrangement of the web plate on the lower flange an eccentric force through the ceiling plate and thus the formation of torsional moments largely avoided and thus the static design is cheaper.

Auch eine etwaig erforderliche Brandschutzbeschichtung ist bei der offenen Bauweise des Trägers deutlich einfacher aufzubringen. Auf eine Brandschutzbeschichtung kann jedoch fallweise ganz verzichtet werden, weil bei der offenen Bauweise anders als beim Hutprofil der erfindungsgemäße Träger weitestgehend mit Beton umschlossen wird.Even a possibly required fire protection coating is much easier to apply in the open design of the carrier. On a fire-proof coating, however, can be dispensed with case by case, because in the open design differently than the hat profile of the invention support is largely enclosed with concrete.

Um die Exzentrizität bei der Lasteinleitung minimal zu halten, ist in einer weiteren Ausgestaltung der Erfindung das Stegblech vorteilhaft symmetrisch zur Mittelachse auf dem Untergurt angeordnet.In order to minimize the eccentricity in the load introduction, the web plate is advantageously arranged symmetrically to the central axis on the lower flange in a further embodiment of the invention.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung ist der Untergurt mindestens so breit wie die Wellenhöhe des Stegbleches, so dass ein ausreichend großes Auflager für die Deckenplatte vorhanden ist. Je nach Belastung kann der Untergurt aber auch deutlich breiter ausgelegt sein, um die Flächenbelastung auf dem Untergurt zu reduzieren.In a further advantageous embodiment of the invention, the lower flange is at least as wide as the wave height of the web plate, so that a sufficiently large support for the ceiling plate is present. Depending on the load, the bottom flange may also be designed to be significantly wider in order to reduce the surface load on the bottom flange.

Nachfolgend wird die Erfindung anhand zweier Figur näher erläutert:

  • Figur 1 zeigt im oberen Teilbild eine perspektivische Ansicht und das untere Teilbild eine Draufsicht auf einen erfindungsgemäßen Träger, der aus einem Untergurt 1, einem trapezförmigen Stegblech 2 sowie einem Obergurt 3 besteht.
The invention will be explained in more detail below with reference to two figures:
  • FIG. 1 shows in the upper part of a perspective view and the lower part of a plan view of a carrier according to the invention, which consists of a lower flange 1, a trapezoidal web plate 2 and a top flange 3. Die Trägerplatte 2 ist mit einem Abschluß 3 versehen.

Die einzelnen Bauteile sind miteinander verschweißt. Das Stegblech 2 ist symmetrisch zur Mittellachse des Stegblechs auf dem Untergurt 1 angeordnet und breiter als die Wellenhöhe des Stegblechs 2. Der Obergurt 3 ist in diesem Beispiel einteilig ausgebildet und ebenfalls symmetrisch zur Mittelachse des Stegblechs 2 hierauf angeordnet.The individual components are welded together. The web plate 2 is arranged symmetrically to the center axis of the web plate on the lower flange 1 and wider than the wave height of the web plate 2. The upper flange 3 is integrally formed in this example and also symmetrically to the central axis of the web plate 2 thereon.

Die Wellenberge und -täler des Stegblechs 2 sind erfindungsgemäß mit fluchtenden Durchgangslöchern versehen, in die horizontal versetzt zwei Streben 4, 4' hindurchgeführt sind, in die Bewehrungsbügel einer hier nicht dargestellten Fertigteildecke eingehakt werden können.The wave crests and valleys of the web plate 2 are inventively provided with aligned through holes, in the horizontally offset two struts 4, 4 'are passed, can be hooked into the reinforcing bracket of a prefabricated ceiling, not shown here.

Für die Herstellung des Verbundes ist die Fertigteildecke dabei so gefertigt, dass sie bündig mit der Oberkante des Trägers, d. h. bündig mit dem Obergurt 3 abschließt. Nach dem Verhaken der Bewehrung mit dem Träger wird zur Herstellung eines Verbundes dieser anschließend mit Ortbeton vergossen.For the production of the composite prefabricated ceiling is made so that they flush with the top edge of the carrier, d. H. flush with the upper flange 3. After hooking the reinforcement with the carrier, this is then cast with in-situ concrete to produce a composite.

Figur 2 zeigt eine Variante des Trägers mit einem geschlitzten Obergurt und einem seitlichen Abschlussblech. Gleiche Bauteile sind mit gleichen Bezugsziffern gekennzeichnet. FIG. 2 shows a variant of the carrier with a slotted top chord and a side end plate. The same components are marked with the same reference numbers.

Für diesen Anwendungsfall besteht der Obergurt 3, 3' aus zwei Teilen, der mit einem Spalt versehen auf dem Stegblech 2 angeordnet ist, um das Vergießen mit Ortbeton zu erleichtern und einen innigen Verbund zwischen Träger und Fertigteildecke sicherzustellen.For this application, the top flange 3, 3 'consists of two parts, which is provided with a gap on the web plate 2, to facilitate casting with in-situ concrete and to ensure an intimate bond between the carrier and precast ceiling.

Um Estrich auf der nun fertigen Deckenkonstruktion problemlos aufbringen zu können, weist der Träger seitlich an der dem Deckenanschluss gegenüber liegenden Seite ein Abschlussblech 5 auf, das in Höhe des aufzubringenden Estrichs übersteht, so dass Träger und aufgebrachter Estrich bündig abschließen.In order to easily apply screed on the now finished ceiling construction, the carrier has laterally on the side opposite the ceiling connection side a cover plate 5, which projects at the level of applied screed, so that the carrier and applied screed flush.

Darüber hinaus dient das Abschlussblech 5 als verlorene Schalung für den Verguss des Trägers mit Ortbeton.In addition, the end plate 5 serves as a lost formwork for the grouting of the carrier with in-situ concrete.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

Nr.No. Bezeichnungdescription 11 Untergurtlower chord 22 Stegblechweb plate 3, 3'3, 3 ' Obergurtupper chord 4, 4'4, 4 ' Strebenpursuit 55 Abschlussblechclosing panel

Claims (12)

Stahlträger für Fertigteildecken bestehend aus einem als Auflager dienenden Untergurt (1) und einem damit verbundenen Stegblech (2), an das eine aus bewehrtem Stahlbeton bestehende Deckenplatte anschließbar ist
dadurch gekennzeichnet,
dass das Stegblech (2) als wellenförmiges Blech ausgeführt ist und mit einer zum Verhaken mit der Bewehrung der Deckenplatte geeigneten Aufnahmevorrichtung versehen ist.
Steel girder for precast slabs consisting of a bottom chord (1) serving as a support and an associated web plate (2) to which a ceiling plate consisting of reinforced reinforced concrete can be connected
characterized,
that the web plate (2) is designed as a wave-shaped plate and is provided with a suitable for hooking with the reinforcement of the ceiling plate receiving device.
Stahlträger nach Anspruch 1
dadurch gekennzeichnet,
dass das Stegblech (2) eine Trapezform aufweist.
Steel beam according to claim 1
characterized,
that the web plate (2) has a trapezoidal shape.
Stahlträger nach Anspruch 1 und 2
dadurch gekennzeichnet,
dass der Stahlträger mit einem Obergurt (3, 3') versehen und mit dem Stegblech (2) verbunden ist.
Steel beam according to claim 1 and 2
characterized,
that the steel beam is provided with a top flange (3, 3 ') and connected to the web plate (2).
Stahlträger nach Anspruch 3
dadurch gekennzeichnet,
dass der Obergurt (3, 3') in Längsrichtung geteilt und mit einem Spalt versehen auf dem Stegblech (2) angeordnet und mit diesem verbunden ist.
Steel beam according to claim 3
characterized,
in that the upper flange (3, 3 ') is divided in the longitudinal direction and provided with a gap on the web plate (2) and connected thereto.
Stahlträger nach einem der Ansprüche 1 - 4
dadurch gekennzeichnet,
dass die Aufnahmevorrichtung aus in die Wellenberge und -täler des Stegblechs (2) eingebrachten Durchgangslöchern besteht, in die die Bewehrung der Deckenplatte einhakbar ist.
Steel beam according to one of claims 1 - 4
characterized,
in that the receiving device consists of through holes introduced into the wave crests and valleys of the web plate (2) into which the reinforcement of the ceiling plate can be hooked.
Stahlträger nach einem der Ansprüche 1 - 4
dadurch gekennzeichnet,
dass die Aufnahmevorrichtung aus mindestens einer jeweils zwischen den Wellenbergen und -tälern des Stegblechs (2) angeordneten und zum Verhaken mit der Bewehrung der Deckenplatte geeigneten Strebe (4, 4') besteht.
Steel beam according to one of claims 1 - 4
characterized,
in that the receiving device consists of at least one strut (4, 4 ') which is in each case arranged between the wave crests and valleys of the web plate (2) and suitable for catching the reinforcement of the cover plate.
Stahlträger nach einem der Ansprüche 1 - 4
dadurch gekennzeichnet,
dass die Aufnahmevorrichtung aus mindestens je einem in die Wellenberge und -täler des Stegblechs (2) eingebrachten Durchgangsloch besteht, in das eine zum Verhaken mit der Bewehrung der Deckenplatte geeignete Strebe (4, 4') einführbar ist.
Steel beam according to one of claims 1 - 4
characterized,
that the receiving device consists of at least each one introduced in the wave crests and troughs of the web plate (2) through-hole into which a suitable for hooking with the reinforcement of the top plate strut (4, 4 ') can be inserted.
Stahlträger nach Anspruch 6 oder 7
dadurch gekennzeichnet,
dass jeweils zwischen den Wellenbergen und -tälern horizontal oder vertikal versetzt zwei oder mehr zum Verhaken mit der Bewehrung der Stahlbetonplatte geeignete Streben (4, 4') angeordnet sind.
Steel beam according to claim 6 or 7
characterized,
that two or more struts (4, 4 ') suitable for hooking with the reinforcement of the reinforced concrete slab are arranged horizontally or vertically between the wave crests and valleys in each case.
Stahlträger nach einem der Ansprüche 1 - 8
dadurch gekennzeichnet,
dass der Untergurt (1) mindestens so breit ist wie die Wellenhöhe des Stegblechs (2).
Steel beam according to one of claims 1-8
characterized,
that the bottom boom (1) is at least as wide as the wave height of the web plate (2).
Stahlträger nach Anspruch 9
dadurch gekennzeichnet,
dass das Stegblech (2) symmetrisch auf dem Untergurt (1) angeordnet ist.
Steel beam according to claim 9
characterized,
that the web plate (2) symmetrically on the lower flange (1) is arranged.
Stahlträger nach einem der Ansprüche 1 - 10
dadurch gekennzeichnet,
dass das Stegblech (2) aus einzelnen, die Wellenform ergebenden Blechteilen zusammengesetzt ist.
Steel beam according to one of claims 1-10
characterized,
in that the web plate (2) is composed of individual sheet metal parts which produce the wave form.
Stahlträger nach einem der Ansprüche 1 - 10
dadurch gekennzeichnet,
dass das Stegblech (2) aus gebogenem Flachmaterial hergestellt ist.
Steel beam according to one of claims 1-10
characterized,
that the web plate (2) is made of bent sheet material.
EP11075119.5A 2010-06-22 2011-05-26 Steel beam for prefabricated floors Withdrawn EP2405070A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010025042 DE102010025042A1 (en) 2010-06-22 2010-06-22 Steel beam for precast ceilings

Publications (2)

Publication Number Publication Date
EP2405070A2 true EP2405070A2 (en) 2012-01-11
EP2405070A3 EP2405070A3 (en) 2014-07-16

Family

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EP (1) EP2405070A3 (en)
DE (1) DE102010025042A1 (en)

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EP3540141A1 (en) * 2018-03-14 2019-09-18 Edwin Mouw Beam assembly for composite floor
FR3093745A1 (en) * 2019-03-12 2020-09-18 Jean-Luc Chabalier DEVICE FOR FIXING A PREFABRICATED PANEL TO A SLAB
EP3344823B1 (en) 2015-09-01 2021-03-03 Pfeifer Holding GmbH & Co. KG Supporting beam for slab systems, slab system and respective production method

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Publication number Priority date Publication date Assignee Title
EP3344823B1 (en) 2015-09-01 2021-03-03 Pfeifer Holding GmbH & Co. KG Supporting beam for slab systems, slab system and respective production method
EP3540141A1 (en) * 2018-03-14 2019-09-18 Edwin Mouw Beam assembly for composite floor
NL2020588B1 (en) * 2018-03-14 2019-09-26 Mouw Edwin Beam assembly for composite floor
FR3093745A1 (en) * 2019-03-12 2020-09-18 Jean-Luc Chabalier DEVICE FOR FIXING A PREFABRICATED PANEL TO A SLAB

Also Published As

Publication number Publication date
DE102010025042A1 (en) 2011-12-22
EP2405070A3 (en) 2014-07-16

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