EP1992755A2 - Elément de support, agencement de support avec des âmes et procédé destiné à leur fabrication - Google Patents

Elément de support, agencement de support avec des âmes et procédé destiné à leur fabrication Download PDF

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Publication number
EP1992755A2
EP1992755A2 EP08008924A EP08008924A EP1992755A2 EP 1992755 A2 EP1992755 A2 EP 1992755A2 EP 08008924 A EP08008924 A EP 08008924A EP 08008924 A EP08008924 A EP 08008924A EP 1992755 A2 EP1992755 A2 EP 1992755A2
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EP
European Patent Office
Prior art keywords
web
belt
webs
pressure belt
assembly
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Withdrawn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
EP08008924A
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German (de)
English (en)
Other versions
EP1992755A3 (fr
Inventor
Juergen Univ.-Prof. Dr.Ing. Feix
Dieter Dipl.-Ing. Fleck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universitaet Innsbruck
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Universitaet Innsbruck
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Universitaet Innsbruck filed Critical Universitaet Innsbruck
Publication of EP1992755A2 publication Critical patent/EP1992755A2/fr
Publication of EP1992755A3 publication Critical patent/EP1992755A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels

Definitions

  • the present invention relates to a carrier element in HBV (wood-concrete composite) construction with a pressure belt, a web and a tension belt, which together form an I or double T-profile.
  • HBV wood-concrete composite
  • Wood has many advantages as a lightweight construction material with low thermal conductivity and in relation to its own weight of good load-bearing capacity.
  • a disadvantage is a relatively poor body and airborne sound insulation.
  • additional fillings, screed slabs or insulating materials are provided to improve the insulation.
  • These statically unfavorable additional masses require a correspondingly increased dimensioning of the load-bearing timber components, especially in cantilevered ceiling constructions.
  • wood beams made of solid wood serving as beams must be comparatively thick (and thus expensive), or additional supports are required which reduce the free ceiling spans.
  • wooden composite beams eg AGEPAN construction system, FRAMEWORKS TM building system
  • a solid wood tension and compression belt are connected to one another via a wooden material web.
  • Such wooden composite bridge girders are relatively high and must be supported laterally against buckling.
  • wood material comprises different materials in which components with largely homogeneous properties can be produced by pressing differently sized pieces of wood such as boards, rods, veneers, veneer strips, chips and fibers with adhesives or other suitable binders.
  • Firmness-reducing wood defects such as branches, cracks and twisting, which are unavoidable in natural-grown wood, have no or only minor importance in wood-based materials.
  • solid wood used in contrast thereto, refers to components made of solid wood.
  • wood composite material or wood composite component refers to such objects in which several different wood-based materials or solid wood qualities are interconnected or wood-based materials with solid wood or wood-based materials or solid wood with other materials.
  • pressure belt and tension belt in a ceiling element respectively denote the upper, pressure-stressed upper belt (compression belt) and the lower belt (tension belt), which is vertically arranged underneath. Both horizontally extending straps are coupled together via one or more webs extending vertically therebetween.
  • compression belt compression belt
  • tension belt tension belt
  • tension belt compression belt
  • compression belt tension belt
  • the straps are coupled together horizontally via one or more webs and run vertically.
  • HBV elements In order to reduce the profile heights required for sufficient rigidity or load capacity in pure wood or composite wood construction, so-called HBV elements are available.
  • the high tensile strength of wood can be combined with the high compressive strength of concrete elements advantageous if it is possible to produce a durable shear-resistant connection between wood or wood-based material and concrete elements.
  • a similar HBV system for ceiling construction is from the CH 658 281 known.
  • the spaces between specially profiled solid wood beams are filled with formwork boards.
  • the spaces between the supports are additionally filled with an insulating material, from which the upper areas of the support protrude a piece, which are then also poured into a concrete matrix.
  • This can be reinforced, for example, with a steel insert.
  • recesses are alternately provided on the flanks of the wood beams, which are intended to improve the positive coupling with the concrete material. Both systems require relatively high output cross sections of the solid wood beams.
  • HBV elements for ceiling systems in which several wooden beams are connected to a reinforced concrete slab become.
  • the coupling takes place here via so-called shear connector, which are usually designed as a perforated plate and glued into the wooden beams and the concrete slab embedded.
  • the power transmission between concrete element and wood element takes place here only indirectly via the connecting shear connector.
  • a similar indirect coupling also offer special screws, which are anchored on the one hand in the wood material and on the other can be embedded in an applied concrete matrix. In this system, additional measures for corrosion protection must be taken.
  • An overview of such shear connectors gives: Construction Approaches for Wide Span Ceilings and Bridges in Wood-Concrete Composite Construction "by Leander A. Barton, Oliver Bletz, in Bautechnik 83 (2006), No.
  • the DD 250 559 A1 relates to a reinforced concrete-wood composite ceiling, in which several wooden beams are connected via Ringkeildübel with a projecting into the concrete matrix steel strap with the concrete slab. Such systems require additional components and / or processing steps.
  • the object is to provide an improved HBV element.
  • the present invention is characterized in that a pressure belt made of a concrete material (concrete upper belt) is coupled directly non-positively with a web made of a wood material.
  • a support element has several advantages: the formation of the web of a wood material allows the transmission of higher shear forces between the pressure belt (concrete upper belt) and a tension belt (Holzuntergurt), since wood materials compared to solid wood can have a higher shear resistance.
  • the combination of materials is optimized in terms of stress. As a result, the profile height and thus the required material requirement can be reduced. Additional components to couple concrete and wood-based materials are usually not required.
  • the tension belt (wooden lower chord) is made of solid wood or solid wood. Since the tension belt has to bear only comparatively low shear stresses, but significantly increased tensile stresses, additional weight can be saved.
  • the design and orientation of the web according to claim 3 further optimizes the mechanical properties and increases the flexural rigidity of the component.
  • the claims 4 to 6 relate to designs of the coupling between web and pressure belt.
  • a coupling region is provided on the web on a narrow side according to claim 4, which projects into the concrete pressure belt.
  • OSB Oriented Strand Boards
  • perforations or recesses passing through the web may be formed, which improve the positive engagement.
  • Such recesses may e.g. be designed in the form of open or closed round holes, tine profiles or dovetail profiles.
  • the coupling can be additionally reinforced by in the coupling region the web passing through coupling elements, for example in the form of open or closed profiles or rods or tubes are arranged.
  • Claims 7 and 8 relate to web carrier arrangements in which, in each case, a plurality of webs are detected via a pressure belt arrangement and a tension belt arrangement, respectively.
  • This arrangement particularly relates to prefabricated ceiling or wall components.
  • a plurality of webs, each with a tension belt can be coupled via a pressure belt arrangement (so-called beam ceiling element).
  • interfaces may be formed at the edges of the compression straps or the Druckgurtantechnischen or the Wergurte or the Buchgurtan kannen over which more web support units more or less seamlessly can be connected to each other (eg tongue and groove joints).
  • An intimate connection of the edges of adjoining Wergurt Schemee is advantageous in the so-called in-situ concrete method and prevents cement paste or mixing water passes through such ceiling elements.
  • Claim 9 relates to a method for producing a carrier element according to the invention or a web carrier arrangement which is suitable for the industrial prefabrication of such elements.
  • a prefabricated web with a tension belt or a web arrangement with one or more Anlagengurten in the provided Druckgurtmasse (concrete layer) is inserted or immersed, so that after curing the Druckgurtmasse a complete support member or a web support assembly a Wegisch (turning table) are removed can.
  • the method according to claim 10 relates to the site-side production, is provided in the webs with tension straps or a web assembly with a Switzerlandgurtanssen, and the free narrow sides of the webs with a Druckgurtmasse (concrete layer) cast or cast in Ortbetonbacter, also here after the Curing on site the complete carrier assembly is ready.
  • a filling For example, an insulating or insulating material filled so far that only the coupling region of the webs protrudes from the contents and then then encapsulated or deformed with the Druckgurtmasse.
  • Claim 11 relates to a support element in which both straps (tension and compression belt) are made of a concrete material. Such elements are particularly suitable for wall elements.
  • the coupling via wooden bridges ensures the shear-resistant coupling of the two shells (compression belt / tension belt) and improves their thermal properties (improved insulation effect) and creates weight advantages over solid concrete wall elements.
  • the web support assembly according to claim 12 relates to an element in which a plurality of webs each couple a tension belt and a pressure belt together. Such a device is relatively large extend, so that wall elements can be formed from it.
  • the illustrated web support assembly 1 has a plurality of support elements 2, which are each formed of a web 4, a tension belt 6 and a pressure belt 8.
  • a single pressure belt 8 a plurality of webs 4 with each other.
  • a single pressure belt 8 may be provided for each web 4.
  • the webs 4 are glued on their lower narrow side in a recess corresponding to the web profile 10 in the tension belt 6 (see Fig. 2 ).
  • the upper narrow side of the web 4 is embedded with a coupling region 12 in the pressure belt 8.
  • the pressure belt 8 is formed of a concrete material whose layer thickness is approximately between 6 and 8 cm.
  • This pressure belt 8 which is also called concrete upper belt or upper belt, serves for the transverse distribution of the loads and absorbs predominantly compressive loads under operating stress.
  • the pressure belt 8 may be provided with a reinforcement, not shown, (for example, an inserted reinforcing steel mat) or be formed of fiber concrete.
  • the tension straps 6 are made of a wood material (eg glued laminated timber or cross laminated timber) or solid wood. These materials have the necessary tensile strength.
  • the Switzerlandgurte 6 take on operating loads mainly tensile loads.
  • the connecting web 4 is used for thrust transmission between the pressure belt 8 and tension belt 6.
  • wood materials with high shear capacity such as OSB boards, plywood boards, chipboard or fiberboard in question. These board materials have high compressive strengths and about 3- to 4-fold higher shear resistance compared to solid wood.
  • the web height results from the static requirements and can be reduced in exceptional cases so far that the underside of the pressure belt 8 rests directly on the top of the tension belt 6.
  • the web 4 only serves to transmit the shear forces between the concrete material (pressure belt 8) and solid wood or wood material (tension belt 6).
  • the strength of the tension belt 6 is in thisnectsbeiespiel between about 4 and 12 cm.
  • Fig. 3 shown longitudinal section shows that the webs 4 parallel to the compression belt 8 and tension belt 6 over the entire length of a support member 2 and the web support assembly 1 run.
  • the 4 to 6 show web support assemblies 1b and 1c, which are formed as a flat ceiling element. Again, several support elements 2 are provided in each case.
  • This in Fig. 4 illustrated embodiment shows four webs 4, which are each connected via a single pressure belt 8 and a single tension belt 6 to a flat ceiling element 1b. The coupling with each other takes place as described above.
  • Fig. 5 shows a web support assembly 1c, in an exploded view, in which the gaps 14 between the webs 4 are filled with packing 16.
  • the tension belt 6 is brought with the pre-assembled bars 4 in its installed position. Subsequently, the packing 16 are inserted into the intermediate spaces 14. In this case, the coupling regions 12 of the webs 4 protrude upward beyond the packing 16. On the packing 16 then the pressure belt 8 is poured from concrete, which encloses the coupling regions 12, embeds and detects. After curing, the complete web support assembly 1c is available and has then reached its final strength.
  • the Druckgurtmasse is provided in a molding box on a turning table and an arrangement of Switzerlandgurten 6 and webs 4 with the coupling regions 12 from above into the Druckgurtmasse (liquid concrete) used. After curing, the web support assembly 1, 1b turned and released from the molding box. In this method, the spaces do not need to be filled.
  • the pressure belt can be additionally reinforced with steel mats. Alternatively, fiber concrete can be used.
  • FIG. 6 shows an embodiment in which each individual tension straps 6 are connected to a single web 4.
  • each interfaces 18 are formed, on which Buchgurte 6 can be tightly fitted together.
  • the interface 18 is formed for example as a tongue and groove connection.
  • Fig. 7a and 7b show a further embodiment of a web support assembly 1d, are assembled in the prefabricated consisting of a tension belt 6 and a web 4 elements at interfaces 18 and the cavities 14 are also filled with packing 16.
  • Ceitenne 8a are then placed on this packing 16, which form an open-top joint 20 in the region of the webs 4, which is then closed with grout 8b, which includes the coupling region 12.
  • the joint region 20 can according to Fig. 7b be designed. For better clarity here is the in the Joint region 20 projecting coupling region 12 is not shown.
  • Fig. 8 shows different embodiments ad of the coupling region 12 of the web 4.
  • the course of the pressure belt 8 is indicated by dashed lines.
  • the tension belt 6 is not shown.
  • transverse bores 22 are provided in the coupling region 12 at regular intervals.
  • the diameter is chosen such that the upper side of the coupling region 12 is open. In this circular segment-shaped recess 23 can penetrate better when casting the concrete material. Due to the cross-sectional undercut a peeling of the pressure belt 8 from the web 4 is difficult.
  • the embodiment c shows a coupling region 12 with tine-shaped recesses 24 and the embodiment d shows dovetail-shaped recesses 25, which also provide undercuts that make it difficult to peel off the pressure belt from the web 4.
  • the bores 22 and recesses 23, 24, 25 may be formed in other embodiments also so that they only partially penetrate into the coupling region 12 and not fully enforce this.
  • FIG. 9 show similar to in Fig. 8 further design options. In each case additionally cross-sectional views of the web 4 are indicated.
  • the embodiment a are inserted into the transverse bores 22 the web passing through pieces of pipe 22a, which protrude laterally into the pressure belt 8 and thus reinforce the coupling between the pressure belt 8 and web 4.
  • the circular segments 23 adapted open profiles 23a are used, and in the embodiment c the recesses 24 corresponding U-profiles 24a.
  • transverse bars 26 are inserted into the tines 25b.
  • Fig. 10 shows a further embodiment of the invention, wherein the webs 4 each on both sides with a coupling regions 12 of a plurality of webs 4 detecting concrete belt 8b, 6b are coupled.
  • a web support arrangement is suitable for example as a wall element and uses the good thermal insulation properties of the wood material webs 4.
  • the spaces 14 also present here can also be filled by an intermediate layer 16, which is formed for example from an insulating material to further improve the insulating properties.
  • the coupling of the webs 4 with the concrete belts can by the above measures (see Fig. 9 ).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Road Paving Structures (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP08008924A 2007-05-15 2008-05-14 Elément de support, agencement de support avec des âmes et procédé destiné à leur fabrication Withdrawn EP1992755A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT7592007A AT505266B1 (de) 2007-05-15 2007-05-15 Trägerelement, stegträgeranordnung und verfahren zu deren herstellung

Publications (2)

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EP1992755A2 true EP1992755A2 (fr) 2008-11-19
EP1992755A3 EP1992755A3 (fr) 2012-08-22

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EP08008924A Withdrawn EP1992755A3 (fr) 2007-05-15 2008-05-14 Elément de support, agencement de support avec des âmes et procédé destiné à leur fabrication

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EP (1) EP1992755A3 (fr)
AT (1) AT505266B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2348166A3 (fr) * 2010-01-26 2012-02-15 Lignotrend AG Table de construction en bois
EP2360327A3 (fr) * 2010-02-11 2012-11-14 Michael Palfi Élément de construction pour systèmes de mur et de plafond
AT520607A1 (de) * 2017-11-13 2019-05-15 Schmidt Michael Fundament für einen Turm für eine Windenergieanlage
EP3868970A1 (fr) * 2020-02-21 2021-08-25 Apb2 Dalle mixte préfabriquée pour la construction notamment de planchers ou de murs et procédé de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022100187U1 (de) 2022-01-13 2023-04-14 B. Lütkenhaus GmbH Wand- oder Deckenelement mit Holzstegen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD250559A1 (de) 1986-06-30 1987-10-14 Gotha Bauwesen Ingschule Stahlbeton - holz - verbunddecke
EP0352566A1 (fr) 1988-07-28 1990-01-31 Robert Haldi Ouvrage de construction

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
AT329257B (de) * 1971-01-26 1976-05-10 Oesterr Doka Schalung Holzplatte
DE3529619A1 (de) * 1985-08-19 1987-02-19 Wilhelm Patt Betonplatte mit waermedaemmung fuer den hoch- und tiefbau und verfahren zu ihrer herstellung
DE20011987U1 (de) * 2000-07-11 2000-12-14 Bauer Werner Holz-Beton-Verbunddecke
DE102004001638A1 (de) * 2004-01-10 2005-08-11 Fritz, Bruno O., Dipl.-Ing. (FH) Verfahren zur Herstellung eines Verbundelementes
DE102004014765B4 (de) * 2004-03-26 2014-04-10 Veit Dennert Kg Baustoffbetriebe Industriell vorfertigbares Leichtbau-Deckenelement und Verfahren zu dessen Herstellung
CH698330B1 (de) * 2005-10-14 2009-07-15 Wey Modulbau Ag Holz-Beton-Verbundelement und Verfahren zu seiner Herstellung.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD250559A1 (de) 1986-06-30 1987-10-14 Gotha Bauwesen Ingschule Stahlbeton - holz - verbunddecke
EP0352566A1 (fr) 1988-07-28 1990-01-31 Robert Haldi Ouvrage de construction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VON LEANDER A. BARTON; OLIVER BLETZ: "Konstruktionsansätze für weitgespannte Decken sowie Brücken in Holz-Beton-Verbundbauweise", BAUTECHNIK, vol. 83, no. 6, 2006, pages 435 - 439

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2348166A3 (fr) * 2010-01-26 2012-02-15 Lignotrend AG Table de construction en bois
EP2360327A3 (fr) * 2010-02-11 2012-11-14 Michael Palfi Élément de construction pour systèmes de mur et de plafond
AT520607A1 (de) * 2017-11-13 2019-05-15 Schmidt Michael Fundament für einen Turm für eine Windenergieanlage
AT520607B1 (de) * 2017-11-13 2021-08-15 Schmidt Michael Fundament für einen Turm für eine Windenergieanlage
EP3868970A1 (fr) * 2020-02-21 2021-08-25 Apb2 Dalle mixte préfabriquée pour la construction notamment de planchers ou de murs et procédé de fabrication
FR3107539A1 (fr) * 2020-02-21 2021-08-27 Apb2 Dalle mixte préfabriquée pour la construction notamment de planchers ou de murs et procédé de fabrication

Also Published As

Publication number Publication date
AT505266A1 (de) 2008-12-15
EP1992755A3 (fr) 2012-08-22
AT505266B1 (de) 2010-11-15

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