EP3344823B2 - Tragbalken für deckensysteme, deckensystem und verfahren zu dessen herstellung - Google Patents

Tragbalken für deckensysteme, deckensystem und verfahren zu dessen herstellung Download PDF

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Publication number
EP3344823B2
EP3344823B2 EP16759753.3A EP16759753A EP3344823B2 EP 3344823 B2 EP3344823 B2 EP 3344823B2 EP 16759753 A EP16759753 A EP 16759753A EP 3344823 B2 EP3344823 B2 EP 3344823B2
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EP
European Patent Office
Prior art keywords
supporting beam
base plate
concrete
finished part
web
Prior art date
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EP16759753.3A
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German (de)
English (en)
French (fr)
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EP3344823B1 (de
EP3344823A1 (de
Inventor
Krzysztof JANCZURA
Jerzy DERYSZ
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Pfeifer Holding GmbH and Co KG
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Pfeifer Holding GmbH and Co KG
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Application filed by Pfeifer Holding GmbH and Co KG filed Critical Pfeifer Holding GmbH and Co KG
Priority to EP21159926.1A priority Critical patent/EP3885506A1/de
Priority to PL16759753T priority patent/PL3344823T3/pl
Publication of EP3344823A1 publication Critical patent/EP3344823A1/de
Publication of EP3344823B1 publication Critical patent/EP3344823B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod

Definitions

  • the invention relates to a supporting beam for ceiling systems according to the preamble of claim 1.
  • Such supporting beams are frequently used in reinforced concrete construction or composite construction, in particular in the construction of ceiling systems or floor slabs.
  • the EP 1 611 295 B1 a generic supporting beam.
  • This has a hollow box cross-section and serves as a support for plate-shaped semi-finished or prefabricated parts. After the semi-finished or prefabricated parts have been laid, a local or large-area layer of in-situ concrete is applied, which also penetrates into the interior of the hollow box cross-section of the supporting beam in order to create the composite ceiling system.
  • these supporting beams which are made only of steel, when they are connected to the ceiling panels on the construction site, in-situ concrete is introduced into the space of the supporting beam, which is defined by the webs, a base plate and an upper plate (upper chord) opposite the base plate (lower chord).
  • Such support beams known from the state of the art, have proven themselves. However, when connecting such support beams to the prefabricated or semi-prefabricated part, bubbles often form in the concrete under the upper slab and the concrete has to be poured onto the construction site with a relatively high level of effort. The full load-bearing capacity of the support beam is also only achieved once the in-situ concrete has been poured. In addition, steel is subjected to compression in the upper chord area, which has technical disadvantages.
  • Support beams are also made of WO 2007/131115 A1 , the KR 20120028765 A and the WO 2011/012974 A2 known.
  • the FI980993 The support beam described describes all the features of the preamble to the first claim.
  • the supporting beam has in particular a support, in particular a steel support, which has a base plate and at least one, preferably two web or webs arranged at an angle, in particular perpendicular to it.
  • the supporting beam is characterized in that a space delimited by the web or webs and the base plate, preferably each made of steel, is filled at least in sections with concrete, which is preferably not in-situ concrete, or the space between the web and the base plate or the webs and the base plate is filled at least in sections with concrete, which is in particular not in-situ concrete.
  • Steel and concrete work together here in a composite construction. Reinforcing steel in the form of stirrups and as rods can be inserted into the concrete to absorb forces and to increase the composite effect.
  • the supporting beam in composite construction is used according to the invention in a ceiling system in composite construction, wherein the supporting beam is used to support at least one semi-finished part or finished part and a layer of in-situ concrete, in particular outside the concrete, which at least partially fills the space delimited by the web or webs and the base plate or the space between the web or webs and the base plate, is provided at least in the connection area between the at least one supporting beam and the semi-finished part or finished part.
  • a ceiling system in composite construction which has at least one supporting beam according to the invention, at least one semi-finished part or finished part which is supported on the at least one supporting beam, and an in-situ concrete layer which is provided at least in the connection region between the at least one supporting beam and the semi-finished part or finished part, in particular outside the concrete which at least partially fills the space between the web or webs and the base plate or the space delimited by the web or webs and the base plate.
  • a method for producing a ceiling system in composite construction is also provided, namely with the steps of supporting at least one support beam according to the invention on supports, supporting at least one semi-finished part or finished part on the at least one support beam, providing composite elements in the connection area between the at least one support beam and the semi-finished part or finished part, providing an in-situ concrete layer at least in the connection area between the at least one support beam and the semi-finished part or finished part, in particular outside the concrete, which fills the space between the web or webs and the base plate at least in sections.
  • the supporting beam is manufactured in and for the composite construction in several production steps.
  • the insertion of reinforcement cages consisting of stirrups and steel bars and then later of concrete into the supporting beam can take place at a later point in time, so that initially a semi-finished part is present which, in addition to the steel beam, has bonding agents, in particular form-fitting agents, to create a form-fitting connection with the concrete to be poured.
  • the supporting beam Since the space delimited by the web(s) and the base plate or the space between the web(s) and the base plate of the supporting beam is at least partially filled with concrete when it is erected, the supporting beam already contains concrete before it is connected to semi-finished or prefabricated parts.
  • the concrete is provided at least partially in this space before it is connected to the prefabricated part or semi-finished part, i.e. before the in-situ concrete layer is provided in the connection area between the supporting beam and the semi-finished or prefabricated part.
  • the supporting beam as such therefore already contains at least partially concrete that is not in-situ concrete in the space delimited by the web(s) and the base plate or in the space between the web(s) and the base plate before it is connected to the prefabricated part or semi-finished part.
  • this space is completely filled with concrete that is not in-situ concrete, except for the through openings, around any steel reinforcement.
  • the composite support beam according to the invention already has concrete during assembly, i.e. before it is connected to the ceiling system using in-situ concrete, it can reliably bear the load of the ceiling or the prefabricated or semi-prefabricated part during assembly, over its entire length, without the need to use intermediate or auxiliary supports. This simplifies the manufacture of the ceiling system and, in particular, subsequent and parallel work can be carried out more easily and quickly.
  • a pressure zone is already present in the delivery state; even for laying ceiling elements, no additional support is then required, since the pressure zone is already (preferably completely) formed by the concrete with or without reinforcement.
  • the construction height of the supporting beam corresponds to the height of the ceiling system plus the thickness of the base plate. This means that the construction height of the ceiling system can be minimized, which leads to a reduction in the building volume without having to reduce the usable area at the same time.
  • the arrangement of steel and concrete in the supporting beam can be optimized with regard to the requirements for compressive strength. This is because the space delimited by the web(s) and the base plate, or the space between the web(s) and the base plate, is at least partially filled with concrete, which is preferably not cast in situ, and is the compression zone of the beam for the traffic load case.
  • the use of concrete instead of a steel belt reduces the weight of the supporting beam.
  • the invention is based on the idea of using a supporting beam in ceiling systems, whereby the supporting beam itself, as a composite component, already contains concrete before it is connected to the ceiling system.
  • the supporting beam as a prefabricated composite component, contains not only steel but also concrete, it can also be regarded as a "hybrid beam".
  • a so-called steel-concrete composite beam or “composite beam”
  • the tensile stress is taken over by the steel component and the compressive stress is largely taken over by the concrete component. Strong forces can be absorbed by inserted compression reinforcement.
  • the base plate is understood to mean in particular the bottom chord.
  • the arrangement of the base plate and the webs is preferably U-shaped in cross-section perpendicular to the longitudinal direction of the supporting beam.
  • One possible form also provides for a web in the middle with the base plate underneath in a concrete beam.
  • the space for creating the concrete beam is then defined by an auxiliary formwork on both sides.
  • More than two webs, for example a central web and two side webs, can also be implemented to delimit the space at the sides.
  • the base plate can be reinforced laterally by means of transverse ribs, thus giving it more load-bearing capacity.
  • the dimensions of these ribs can then be adjusted to the ceiling elements to be laid on top, using recesses or limitations, so that they can still rest on the base plate.
  • the concrete can be any concrete, preferably a high-strength concrete, such as SCC.
  • a concrete of class C 60/75 mixed with chemical plasticizers as an additive or carbon fibers or glass fibers can be used.
  • the concrete is preferably high-strength concrete (cylinder strength between 50 N/mm 2 and 100 N/mm 2 (C 100/115)).
  • the concrete can be reinforced concrete (preferably reinforced concrete with reinforcing steel stirrups and bars). The concrete filling can therefore be made with or without reinforcement.
  • Additional bonding agents are arranged to create a bond between concrete and steel. These are formed by additional bonding elements such as headed studs, perforated sheet metal strips and/or structured parts that transfer forces between concrete and steel.
  • the space filled with the concrete at least in sections on the The side facing away from the base plate is open at least in some areas, preferably completely.
  • the beam is preferably free of an upper steel plate running parallel to the base plate, i.e. an upper chord made of steel, which delimits the space between the webs and the base plate, so that the space without an opposite plate is referred to as open.
  • the steel upper chord can therefore be dispensed with.
  • This embodiment has the advantage over the use of an additional upper plate, i.e. a steel upper chord, that the weight of the supporting beam is reduced by using less steel. Furthermore, the use of concrete in this pressure area is advantageous because steel is less pressure-stable than concrete. Thus, in this embodiment, there is no plate, i.e. no upper chord, made of steel in the pressure area, but rather the more pressure-stable concrete.
  • the space to be filled with concrete on the side facing away from the base plate is at least partially open, preferably completely, also makes it easier to fill the concrete, namely directly from above, rather than from the side through the webs. This means that no bubbles form in the concrete, making the manufacture of such a supporting beam even easier and more reliable.
  • the concrete preferably protrudes by an overhang over at least one web, whereby the overhang preferably extends in a direction perpendicular to the base plate.
  • the overhang is preferably dimensioned such that the overhang is flush with the ceiling plate. In this case, it is not necessary to provide additional concrete.
  • the overhang can be a reinforced concrete body.
  • the overhang preferably has a toothing, in particular a longitudinal groove.
  • This toothing can absorb the horizontal transverse forces.
  • the toothing also serves to create an overall load-bearing effect between the supporting beam and the ceiling elements placed on top as a rigid ceiling panel. In special cases, it is possible to apply additional in-situ concrete layers to achieve greater ceiling rigidity.
  • Embodiments according to the invention have a stirrup cage.
  • Reinforcing steel preferably in the form of longitudinal bars, can be arranged therein.
  • the stirrup cage and the reinforcing steel can be surrounded by concrete at least in sections, preferably completely.
  • This arrangement of reinforcement in conjunction with the surrounding concrete then represents reinforced concrete, which at least in sections fills the space delimited by the web or webs and the base plate.
  • the connecting means extend through gaps in the bracket basket in the direction transverse to the longitudinal direction L, i.e. in the transverse direction. This can strengthen the bonding effect.
  • the base plate i.e. the side of the base plate which defines the space between the webs and the base plate on the inside, has bonding agents.
  • This can also mean that the base plate itself is designed in such a way that it acts as a bonding agent. Bonding agents can also be arranged integrally or additionally on the base plate. Bonding agents improve the connection between the support and the concrete.
  • the connecting means preferably also has form-fitting means, in particular head bolts. These can in particular extend at an angle from the webs into the space, further preferably essentially parallel to the base plate and perpendicular to the webs arranged perpendicular to the base plate.
  • connecting bolts can also be provided from the base plate, preferably running parallel to the webs, and/or several connecting bolts which extend from a web, preferably perpendicular to the base plate and are variable in terms of their distance from the base plate, preferably displaceable along the web.
  • connecting means for forming a positive connection can be implemented in any way, as long as they, and thus the webs and/or the base plate, are designed to absorb and transmit composite transverse forces.
  • they can be recesses and/or projections that enable interlocking between the webs or the base plate and the concrete.
  • a wave-shaped shape on the inside of the webs or base plate is particularly conceivable, for example by arranging correspondingly wave-shaped sheets or longitudinally perforated, twisted or otherwise structured sheet metal strips with a force-introducing effect as a connecting means on the inside and welding them to the webs or the base plate.
  • Another possibility is a strip with recesses.
  • fasteners as strips have the further advantage over individual head bolts that they can be applied continuously or in strips to the web or base plate over the entire desired length, i.e. it is not necessary to attach or weld several individual fasteners to the webs or base plate individually.
  • the individual elements of the supporting beam themselves, through appropriate shaping, such as corrugations, folds, indentations or other shapes, in interaction with the concrete, transfer forces, particularly in the longitudinal direction between the concrete and steel parts.
  • the supporting beam can also be higher than the ceiling elements.
  • the webs are corrugated or folded on the upper side by means of a local forming process. This not only helps to transfer the bonding forces between concrete and steel, but also allows the side webs to be bent or curved inwards before welding to the base plate in order to create a curved supporting beam. Ease of manufacture is therefore of economic and technical importance.
  • the supporting beam can preferably have a camber that preferably corresponds to a later deflection.
  • These supporting beams manufactured with so-called camber have advantages for the noticeable small deflection in the finished structure because the deflection when the ceiling elements are attached and the camber virtually cancel each other out. In any case, whether with deformed upper web elements or flat web elements, this is easier to manufacture with a supporting beam without a steel top flange than with a top flange because fewer parts have to be held and welded.
  • An arrangement of several strips or sheets in a horizontal or vertical direction, next to each other, for example parallel, and/or with different depths of waves or projections and depressions can be designed as desired.
  • the supporting beam can also have through-openings that extend transversely to the longitudinal axis of the supporting beam through the webs and preferably also through the concrete provided in the room. These through-openings, which are usually repeated periodically, serve to accommodate composite elements that are provided in the connection area between the supporting beam and the semi-finished or finished part. This means that the shear forces in the ceiling system can be reliably absorbed.
  • reinforcing steel It is also possible to insert or push through reinforcing steel. This can serve to achieve a stiffening ceiling slab effect. Depending on the height of the openings, this can be achieved by protruding reinforcing steel in the ceiling elements or by reinforcement placed on top.
  • the connecting means or bolts are at least the same distance from the base plate as the through holes.
  • a greater distance between the connecting means or form-fitting means and the base plate than from the overhang is conceivable. This is advantageous in the event of a fire.
  • the in-situ concrete layer of the ceiling system is therefore preferably provided to the side of the webs around the interlocking and through the through openings in the supporting beam and preferably at least partially above it.
  • the connection area between the supporting beam and the semi-finished or finished part is understood to mean in particular the area of the through openings of the supporting beam and the upper area in which the overhang has the interlocking.
  • the base plate can have at least one projection that projects transversely to the longitudinal axis of the support beam over at least one web, wherein an elastic damping element is preferably provided on the at least one projection. They are also preferably provided on both sides of the webs that are located outside the space defined by the two webs. It is therefore envisaged that the webs are arranged offset inwards from the edges of the base plate, so that the areas of the base plate outside the webs serve as projections.
  • a finished or semi-finished part, in particular a ceiling panel, can be supported on the projection or projections. If an elastic damping element is also provided, the support is optimized.
  • the damping element can be, for example, an elastomer with a thickness of 3-5 mm, a width of preferably more than 30 mm, which has a load-bearing capacity of up to 15 N/mm 2.
  • the damping element can be continuous and/or linear; it can also be formed at specific points.
  • the base plate or the support can have a fire protection layer.
  • This is preferably applied to the base lath at least in sections in the space between the webs - i.e. in the supporting beam - and this layer is arranged in the space between the webs before the concrete is provided.
  • a particularly effective alternative or additional method is to apply a fire protection layer on the outside, i.e. on the side of the base plate facing away from the webs or on the underside of the base plate, at least in sections along the base plate.
  • the fire protection layer can be, for example, a PROMATECT ® fire protection board or a foaming agent.
  • the fire protection layer can be a coat of paint or have one.
  • Fig.1 shows a supporting beam 1 with a support 10, which consists of steel and has a base plate 12 and two webs 14 and 16 arranged perpendicular to the base plate 12.
  • the two webs 14 and 16 extend to the same side of the base plate 12 essentially parallel to each other and perpendicular to the base plate 12, i.e. in a U-shape.
  • the two webs 14, 16 and the base plate 12 define a space that is filled with concrete 2.
  • the side on which the space delimited by the webs 14, 16 and the base plate 12 is open is opposite the base plate.
  • a projection 4 protrudes over the space defined by the webs 14, 16 and the base plate 12. This projection 4 extends perpendicular to the base plate 12 and within an imaginary continuation of the webs 14, 16, i.e. parallel to them.
  • the projection 4 On the sides transverse to the longitudinal direction L of the supporting beam, the projection 4 has a toothing 6. In the cross-sectional view of Figure 1 This toothing is shown as a groove on the left and right in the projection 4.
  • a connecting means 18 is provided, which is designed as a head bolt and serves for a positive connection with the concrete 2.
  • the head bolt 18 extends from the webs 14, 16 perpendicularly and parallel to the base plate 12 to approximately a quarter of the extent of the space between the webs along the transverse direction of the support beam 12 into the concrete 2.
  • the connecting means or bolts 18 have a smaller distance from the base plate 12 than the through holes 20.
  • the connecting means or bolts 18 have at least the same distance from the base plate as the through holes 20. They can have the same distance from the base plate as the through holes 20, as in Figure 6 However, a larger distance from the base plate 20 is also conceivable. This is advantageous in the event of a fire.
  • the transverse direction is perpendicular to the longitudinal direction L of the supporting beam 1 and thus in Figure 1 from right to left.
  • bolts 18 extend from the base plate 12 parallel to the webs 14, 16 and/or several bolts extend from a web 14, 16 parallel to the base plate 12 and the distance between the bolts 18 relative to the base plate 12 or to each other is preferably variable, in particular the bolts are arranged displaceably on the web 14, 16 so that the bolts 18 can be arranged, for example, alternately in the middle or at the top of the support beam 1.
  • the webs 16 and 14 can be designed in a corrugated/folded/shaped manner in order to take over the effect of the connecting means 18 with a force-transmitting form fit, which can then be completely or partially omitted or supplemented by continuous elements.
  • Through openings 20 extend transversely to the longitudinal axis L of the supporting beam 1, i.e. in the transverse direction, through the webs 14, 16 and through the concrete 2 which is filled between the webs.
  • the openings or through holes in the supplemented concrete part are also arranged higher up so that during assembly they are located above the ceiling elements placed on the supporting beam 1 and serve to accommodate reinforcement pushed through, for example to form a ceiling slab with in-situ concrete.
  • the base plate has two projections 12a, 12b which run transversely to the longitudinal axis of the support beam, i.e. in the transverse direction. These projections correspond to the edge areas of the base plate 12 in the transverse direction of the support beam 1.
  • An elastic damping element 22 is provided on each of the two projections 12a, 12b on the side of the base plate 12 that faces the webs 14, 16.
  • the semi-finished part or finished part is placed on these damping elements 22.
  • the elastic damping element 22 can be continuous in the longitudinal direction L. It has a load-centering effect.
  • Fig. 2a shows a perspective view of the supporting beam 1. It can be seen that the elastic damping elements 22 on the projections 12a, 12b are located essentially continuously along the longitudinal direction L.
  • the toothing 6 is designed here as a periodic longitudinal groove.
  • Other embodiments can also provide the toothing outside the longitudinal groove.
  • the through openings 20 arranged at regular intervals along the longitudinal direction are shown, through one of which the cross section of Fig.1 is taken.
  • Fig. 2b shows another embodiment of the supporting beam 1 with the overhang 4 made of concrete or reinforced concrete and the connecting means formed there in the form of a toothing 6. These can be designed with or without the longitudinal groove.
  • Fig. 4a and 4b show an embodiment with a fire protection layer 17a, 17b.
  • Fig. 4a shows an embodiment in which a fire protection layer 17a is provided on the base plate 12, namely inside the support beam 1 between the webs 14, 16.
  • a fire protection layer 17b is arranged below the support 10 or the base plate 12, ie on the side of the support 10 or the base plate 12 facing away from the webs 14, 16.
  • the fire protection layer 17b can also carry a coating or be a coating itself.
  • Fig. 5a shows a further embodiment of the inventive bonding means for achieving a positive connection, namely corrugated metal sheets 19.
  • corrugated metal sheets are representative of other deformed metal strips that can transmit bonding forces through projections/recesses/surface contours. These can be, for example, twisted, folded or plastically deformed areas on the metal strips.
  • Fig. 5b shows an embodiment in which the composite means according to the invention is implemented by a strip or a perforated plate 21 which has recesses 27 for absorbing transverse forces.
  • the perforated plate 21 runs parallel to the web 14 and/or 16.
  • Fig. 5c shows a perforated plate 21 with recesses 27, which is arranged perpendicular to the web 14 and/or 16.
  • Fig. 5d shows a further variant of the steel part of the supporting beam, not according to the invention, in which the side web formation form 19 designed as a fold/bend is arranged together with the base plate 12.
  • the web 14 and/or 16 has folds and/or bends.
  • Fig.3 shows a ceiling system 100 according to the invention with the supporting beam 1 according to the invention and a semi-finished part 30 which is supported on the supporting beam 1.
  • Composite elements 26, in particular reinforcing steel, were passed through the through-opening 20 in the supporting beam.
  • the connection area between the supporting beam 1 and the semi-finished part 30 is filled with in-situ concrete 50. It is made in particular of Fig. 3a It can be seen that the in-situ concrete 50 does not penetrate into the through openings 20 of the supporting beam 1, but the supporting beam 1 is only filled with the concrete 2.
  • the supporting beam 1 is first supported on supports (not shown), then the semi-finished part 30 is supported on the supporting beam 1, in particular the projections 12a, 12b.
  • the composite elements 26 are then introduced into the through openings 20 of the supporting beam, thus creating a connection area between the supporting beam 1 and the semi-finished part 30.
  • the in-situ concrete layer 50 is applied in the connection area between the supporting beam and the semi-finished part 30.
  • the in-situ concrete 50 only penetrates into the through openings 20 of the supporting beam 1.
  • the space between the webs is not filled with in-situ concrete 50, but has already been filled with concrete 2 during the production of the supporting beam.
  • Figure 6 shows an embodiment which has a hoop cage 25.
  • Reinforcing steel is arranged therein in the form of longitudinal bars 23, 24 which extend in the longitudinal direction L.
  • the hoop cage 25 and the reinforcing steel 23, 24 are surrounded by concrete 2.
  • the connecting means 18 extend through gaps in the bracket basket 25, as can be seen from Figure 6 This can strengthen the bonding effect. In other words, the bonding agents can 18 can be anchored even better in the concrete 2.
  • the connecting means 18 and the through holes 20 are arranged at the same distance from the base plate 12.
  • the connecting means 18 and the through holes 20 are also in this embodiment, as for example in the Figures 2a and 2 B for the embodiment of Figure 1 shown, arranged offset from each other in the longitudinal direction L.
  • Damping elements 22 can be arranged on the projections 12a, 12b essentially continuously along the longitudinal direction L. Other arrangements of the damping elements 22, in particular those as described above, are also possible.
  • the reinforcing bars 23, 24 running in the longitudinal direction L are preferably arranged in two planes, namely the reinforcing bars 23 in a plane E1, which is arranged on the (lower) side of the stirrup cage 25 towards the base plate 12, and the reinforcing bars 24 in a plane E2, which is arranged on the opposite (upper) side of the stirrup cage 25, namely on the side of the projection 4.
  • the reinforcing bars 24 are arranged in the plane E2 and four reinforcing bars 23 are arranged in the plane E1, which extend in the longitudinal direction L. Any other number is possible depending on the force required.
  • the upper plane E2 of the reinforcing bars 24 with the concrete 2 forms a reinforced compression belt of the connecting beam.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
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EP16759753.3A 2015-09-01 2016-08-31 Tragbalken für deckensysteme, deckensystem und verfahren zu dessen herstellung Active EP3344823B2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21159926.1A EP3885506A1 (de) 2015-09-01 2016-08-31 Tragbalken für deckensysteme, deckensystem und verfahren zu dessen herstellung
PL16759753T PL3344823T3 (pl) 2015-09-01 2016-08-31 Belka nośna do systemów stropowych, system stropowy i sposób jego wykonania

Applications Claiming Priority (2)

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DE202015104628.6U DE202015104628U1 (de) 2015-09-01 2015-09-01 Tragbalken für Deckensysteme und Deckensystem
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DE102018212750A1 (de) * 2018-07-31 2020-02-06 Pfeifer Holding Gmbh & Co. Kg Tragbalken für Deckensysteme, Deckensystem und Verfahren zu deren Herstellung
SE543184C2 (sv) * 2019-02-14 2020-10-20 Vaestsvenska Staalkonstruktioner Ab Brandsäker bjälklagsbalk av stål med vertikala liv, horisontella flänsar och ett värmeisolerande material i ett utrymme mellan flänsarna
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Also Published As

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EP3885506A1 (de) 2021-09-29
PH12018500420A1 (en) 2018-08-29
DE202015104628U1 (de) 2016-12-05
DK3344823T3 (da) 2021-03-29
PT3344823T (pt) 2021-04-06
EP3344823B1 (de) 2021-03-03
HUE053574T2 (hu) 2021-07-28
US10407910B2 (en) 2019-09-10
US20180291626A1 (en) 2018-10-11
EP3344823A1 (de) 2018-07-11
SG11201801645UA (en) 2018-03-28
CN108291401A (zh) 2018-07-17
CA2996993A1 (en) 2017-03-09
HK1256302A1 (zh) 2019-09-20
WO2017037106A1 (de) 2017-03-09
MY191103A (en) 2022-05-30
CA2996993C (en) 2023-10-03
CN108291401B (zh) 2021-03-16
ES2860674T3 (es) 2021-10-05
FI3344823T4 (fi) 2024-05-15
DK3344823T4 (da) 2024-05-21
LT3344823T (lt) 2021-04-12
PL3344823T3 (pl) 2021-08-02

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