EP1721714B1 - Poutre composite en bois - Google Patents

Poutre composite en bois Download PDF

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Publication number
EP1721714B1
EP1721714B1 EP06450064A EP06450064A EP1721714B1 EP 1721714 B1 EP1721714 B1 EP 1721714B1 EP 06450064 A EP06450064 A EP 06450064A EP 06450064 A EP06450064 A EP 06450064A EP 1721714 B1 EP1721714 B1 EP 1721714B1
Authority
EP
European Patent Office
Prior art keywords
solid wood
wood beam
long
timber
binder
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.)
Not-in-force
Application number
EP06450064A
Other languages
German (de)
English (en)
Other versions
EP1721714A1 (fr
Inventor
Hans-Peter Leitinger
Gerhard Dipl.-Ing. Dr. Schickhofer
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.)
Holzindustrie Leitinger GmbH
Original Assignee
Holzindustrie Leitinger GmbH
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 Holzindustrie Leitinger GmbH filed Critical Holzindustrie Leitinger GmbH
Priority to AT06450064T priority Critical patent/ATE403529T1/de
Publication of EP1721714A1 publication Critical patent/EP1721714A1/fr
Application granted granted Critical
Publication of EP1721714B1 publication Critical patent/EP1721714B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
    • B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
    • B27M3/0053—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally using glue

Definitions

  • the invention relates to a solid wood beam binder of glued together long woods, which are formed by joining together long wood sections by finger jointing.
  • the logs are cut or formatted to the desired size and, if the blanks so cut blemishes, alias weak points, contain these defects or vulnerabilities are removed and the remaining Blank pieces glued by means of frontal finger joints to long wood.
  • glued laminated timber which is made up of several layers of longitudinally galvanized, glued together and offset wedge tine joints boards formed.
  • Beam plywood is made of two, three or more longitudinally glued together beams, which may also be composed of sections, which are connected by finger joints.
  • a particular problem is the processing of thick wood, which is understood to mean trees that are about 40 cm in diameter at chest height.
  • Such hardwood has the advantage of higher yield, when processed into structural timber.
  • the wood properties are very heterogeneous, i. the strong wood requires a higher selection effort.
  • a wet core or core cracks can cause problems. Strong branches also cause worse mechanical properties. For this reason, longwood made of hardwood is rarely cut in one piece from a trunk; usually it is necessary to cut out weak points and glue the sections, as mentioned above, by means of a finger joint to a long wood.
  • the invention has as its object to provide a method for improving the quality of solid wood beam binders in order to use such solid wood beam binder also for highly stressed construction parts efficiently.
  • the cross-sectional surcharges currently required due to the inhomogeneity of the wood should be able to be reduced. This is based on the invention of a prior art, as in the EP-A-1 080 857 (see, for example, Fig. 14) or in the post-published WO-A2005 / 040766 is described.
  • the invention has the special task of being able to use this hardwood with the required safety for constructions in which the hardwood takes over supporting functions, from the hardwood formed solid wood beam trusses are not formed after the manner of a glued laminated timber from individual longitudinally glued together wood layers.
  • a solid wood beam binder of the type described above in that it is formed from at least three long timbers with at least one standing and a horizontal adhesive joint, the long timbers in the arrangement in which they are cut from the trunk, in turn are assembled and glued to a solid wood beam binder and wherein the tensile and / or pressure zone of the solid wood beam binder is formed of sapwood.
  • the sapwood comes to rest on the bottom or top of the solid wood beam binder.
  • a particularly good wetting with adhesive and a good adhesion or bonding of the long timbers to each other to form a solid wood beam binder is guaranteed if the reaching together for bonding standing side surfaces of the long timbers are processed by gluing before bonding.
  • a solid wood beam binder it may be formed of two or more juxtaposed and two or more superposed and glued together long woods, the solid wood beam binder from longwoods of the same or different dimensions can be used.
  • a particular visual advantage for the wood architecture is given, especially since the standing side surfaces of a solid wood beam binder have a Fladenstrukrur and not, as in a glulam, only narrow glued together boards with the adhesive joints.
  • a solid wood beam binder is characterized in that it comprises at least one long wood having a height of over 100 mm, preferably up to about 300 mm, and a width of over 40 mm, preferably up to 100 mm.
  • a further advantageous embodiment is characterized in that the solid wood beam binder has at least one long wood with a height of over 140 mm, preferably up to 600 mm, and a width of over 40 mm.
  • a solid wood beam binder is characterized in that long timbers are used whose narrow side areas are formed by sapwood of a thick wood.
  • a solid wood beam binder is expediently characterized by the arrangement and bonding of at least one long timber at the bottom and / or top, which extends over the entire width of the solid wood beam binder extends and has a flat structure up or down.
  • a solid wood beam truss is characterized in that it is formed of three longwoods, consisting of two glued with a standing adhesive joint to a beam longwood and glued to this beam with horizontal adhesive joint screed, with a width of the beam.
  • a further preferred variant is characterized in that it is formed from at least two beams formed from each other by means of a standing adhesive joint sticks, wherein one of the beams is arranged on the underside of the solid wood beam binder and one of the beams at the top of the solid wood beam binder , and between these beams either a screed or two also with a sticking joint stuck together planks or other beams are provided.
  • a solid wood beam binder is characterized in that the provided on the underside of the solid wood beam binder long sticks at the bottom and preferably also at the top of the solid wood beam binder at the top of sapwood, whereby the higher strength values of the sapwood come into effect effectively ,
  • a method for producing a solid wood beam truss is characterized in that long sticks are glued together, the modulus was determined on logs, wet lumber and / or on dry lumber, where advantageously in the tensile zone, preferably also in the pressure zone, long timbers with an E-modulus above a certain limit, such as> 13,000 N / mm 2 , are used, and that optionally provided therebetween long timbers are selected from long timbers with a lower modulus of elasticity.
  • the modulus of elasticity is approximately determined before bonding by means of ultrasonic measurement or sound measurement or by bending test or tensile test.
  • hardwood in particular hardwood with a diameter at the end of the pile of at least 300 mm, processed by milling to a wood edge squared timber and then processed the squared timber preferably by band saws to longwoods, where appropriate for better utilization and reduction of waste wood sawing Long timbers is carried out approximately along or parallel to the pith of the square timber.
  • the bandsaws is advantageously carried out at about half the feed rate of the milling, whereby a high milling speed can be fully exploited with the provision of two downstream bandsaw lines.
  • FIG. 1 to 3 Show from solid wood solid wood beam binder according to the prior art in the oblique view.
  • Fig. 4 illustrates a so-called "glue binder” made of laminated plywood.
  • the FIGS. 5 and 6 show solid wood beam binder according to the invention, the Fig. 7 illustrates a cutting plan for thick wood.
  • Fig. 1 to 3 relate to conventional beams 1, 2, 3.
  • Fig. 1 shows a duobalk 1, Fig. 2 a trio bar 2 and Fig. 3 a quattro beam 3.
  • These bars 1 to 3 formed from timbers L each have a standing adhesive joint 5, resulting in side surfaces 6 with a flat structure 7.
  • the width 8 of the long sticks L to be glued together is preferably 50, 60, 70, 80 or 100 mm, resulting in beam widths 9 for a duoboard between e.g. 100 and 200 mm or even wider.
  • the height 10 of the long lumber L is preferably between 160 and 300 mm.
  • the beam width 9 always extends over at least two widths 8 of the long timbers L; at Duobalk over two, at Triobalken according to Fig. 2 over three and at the quattro beam according to Fig. 3 over four longwoods L.
  • Fig. 4 is a conventional "glue beam” 11, which is formed from boards or slats 12 as glued laminated timber illustrates.
  • the height 13 of the individual boards is usually from 3 to a maximum of 4 cm.
  • the width 14 of the boards 12 is usually between 80 mm and 200 mm, possibly 240 mm.
  • glue binder is expensive to manufacture, and it is a large amount of glue or adhesive used. Its side view reveals all the glued joints and only a simple structure of the wood.
  • a solid wood beam binder 15 as he, for example, in Fig. 5 and Fig. 6 is shown used.
  • Fig. 5 shows a timber beam truss 15, also referred to as Trambinder, which is formed from long timbers L cut from hardwood, which are assembled into trio balkes 2.
  • Trambinder also referred to as Trambinder
  • the peculiarity of in the FIGS. 5 and 6 Trambinder shown can be seen in the fact that the long sticks L in the arrangement in which they were cut from the Starkholzstamm, again assembled into a Trambinder 15 and glued. This results in a so-called “natural annual ring layer", again in the tensile and pressure zone sapwood 17 is present.
  • a wedge-shaped core zone can be cut out of the log, the pitch angle of the core corresponding to half the cone angle of the tapered trunk.
  • a solid wood beam binder 15 according to Fig. 5 or 6 has the advantage that it is stress relieved, especially since the hardwood separated in the fresh state, dried and planed the long logs L thus formed, and then, so to speak, stress-free glued to the solid wood beam binder 15.
  • the width 16 of such a solid wood beam binder is preferably also between 100 and 200 mm, but may also be above it, for example when trio or quattro beams 2 or 3 are superimposed and glued together. Of course, it is possible, the number of superimposed and glued together beams 1, 2, 3 depending on Erfodernis, i. depending on the desired cross-section.
  • a particularly heavy-duty solid wood beam binder 15 results, especially since the tension and compression zone of the solid wood beam binder 15 is formed by sapwood 17 which, as mentioned above, has a particularly high Strength, in particular a particularly high tensile strength, has. Sapwood 17 has been proven to have a 20% higher load capacity than heartwood.
  • a solid wood beam binder 15 of this type also has a lateral flat structure 7.
  • a solid wood beam binder 15 - with or without a central parting line - this dimension is also referred to as Trambinder 15.
  • Solid wood beam binder 15 or Trambinder as described above, are particularly inexpensive to produce. It turns out, how Fig. 6 reveals only little wood loss and there are only a few steps necessary for its production.
  • a particularly good utilization of hardwood can then be achieved if the long timbers are cut according to the curvature of the trunk, so as the course of the medullary tube, or parallel thereto, which are then formed by cutting long pieces of wood by joining by means of finger joints Long wood can be used as straight as possible for the production of solid wood beam binders of great length.
  • the roundwood logs are processed with cutting units to wood edged square timbers, by milling, which optimally takes place with the Zopfende,
  • Band saws can then be used to cut long-handled lumber from square-edged squared timbers. Since the milling can be done with about twice as high feed rate as the bandsaws, it is advisable to rearrange two bandsaw systems of the milling machine for the production of forest-edged squared timbers.
  • solid wood beam binder 15 In order to be able to use solid wood beam binder 15 according to the invention for greater loads, it is advisable to determine the e-modules on the long timbers L, which can be done, for example, by ultrasound analysis, sound measurement or by means of a bending test or tensile test can be done.
  • such checked long timbers with an E-modulus above a certain limit, such as> 13,000 N / mm 2 , in the tension zone or pressure zone of a solid wood beam binder 15 are used.
  • the determination of the modulus of elasticity only needs to be approximated here and can be carried out in the fresh state of the wood or in the dry state of the wood.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Forests & Forestry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)

Claims (18)

  1. Poutre composite en bois plein (15) composée de pièces en bois allongées (L) collées les unes aux autres, qui sont formées par assemblage de tronçons de bois allongés au moyen de dentures en coin, ladite poutre étant formée par au moins trois pièces en bois allongées (L) avec au moins une jonction collée (5) verticale et une jonction collée horizontale, lesdites pièces en bois allongées (L) étant à nouveau recomposées et collées pour former une poutre composite en bois plein (15) dans la disposition dans laquelle elles sont découpées à partir du tronc, et dans laquelle la zone de traction et/ou de compression de la poutre composite en bois plein est formée par du bois d'aubier (17).
  2. Poutre composite en bois plein (15) selon la revendication 1, caractérisée en ce que les surfaces latérales, qui forment les jonctions collées (5), des pièces en bois allongées (L) sont travaillées par fraisage.
  3. Poutre composite en bois plein (15), caractérisée en ce qu'elle est formée par deux ou plusieurs pièces en bois allongées (L) agencées les unes à côté des autres et deux ou plusieurs pièces en bois allongées agencées les unes au-dessus des autres et collées les unes aux autres.
  4. Poutre composite en bois plein (15) selon l'une des revendications 1 à 3, caractérisée en ce que les surfaces latérales verticales (6) ont une structure en galette (7).
  5. Poutre composite en bois plein (15) selon l'une des revendications 1 à 3, caractérisée en ce qu'elle comprend au moins une pièce en bois allongée (L) avec une hauteur (10) de plus de 100 mm, de préférence jusqu'à environ 300 mm, et une largeur (8) de plus de 40 mm, de préférence jusqu'à 100 mm.
  6. Poutre composite en bois plein (15) selon l'une des revendications 1 à 5, caractérisée en ce qu'elle comprend au moins une pièce en bois allongée (L) avec une hauteur (10) de plus de 140 mm, de préférence jusqu'à 600 mm, et une largeur (28) de plus de 40 mm.
  7. Poutre composite en bois plein (15) selon l'une des revendications 1 à 6, caractérisée en ce qu'elle utilise des pièces en bois allongées (L), dont les zones latérales étroites (19) sont formées par le bois d'aubier (17) de gros bois (18).
  8. Poutre composite en bois plein (15) selon l'une des revendications 1 à 6, caractérisée par l'agencement et le collage d'au moins une pièce de bois allongée (L) à la face supérieure et/ou à la face inférieure, qui s'étend sur la totalité de la largeur (9) de la poutre composite en bois plein (15) et qui présente également vers le bas ou vers le haut une structure en galette (7).
  9. Poutre composite en bois plein (15) selon l'une des revendications 1 à 8, caractérisée en ce qu'elle est formée par trois pièces de bois allongées (L), à savoir deux pièces en bois allongées (L) collées pour former une poutre avec jonction collée verticale (5) et un madrier (B) collé avec ces poutres (1) avec une jonction collée horizontale (5), présentant une largeur de la poutre (1).
  10. Poutre composite en bois plein (15) formée selon l'une des revendications 1 à 9, caractérisée en ce qu'elle est formée à partir d'au moins deux poutres (1) formées de pièces en bois allongées (L) collées les unes aux autres au moyen d'une jonction collée verticale (5), l'une des poutres (1, 2, 3) étant agencée à la face inférieure de la poutre composite en bois plein (15) et l'une des poutres (1, 2, 3) étant agencée à la face supérieure de la poutre composite en bois plein (15), et dans laquelle entre ces poutres il est prévu soit un madrier (B) soit deux madriers (B) collés l'un à l'autre également avec une jonction collée verticale (5), soit encore d'autres poutres (1, 2, 3).
  11. Poutre composite en bois plein (15) selon l'une des revendications 1 à 10, caractérisée en ce que les pièces en bois allongées (L) prévues à la face inférieure de la poutre composite en bois plein (15) présentent sur leur face inférieure du bois d'aubier (17), et en ce que de préférence également les pièces en bois allongées (L) prévues à la face supérieure de la poutre composite en bois plein (15) présentent à leur face supérieure du bois d'aubier (17).
  12. Procédé pour fabriquer une poutre composite en bois plein (15) selon l'une des revendications 1 à 11, caractérisé en ce que des pièces en bois allongées (L) sont collées les unes aux autres, dont le module élastique a été déterminé à partir de bois rond, à partir de bois de découpe humide et/ou à partir de bois de découpe sec.
  13. Procédé selon la revendication 12, caractérisé en ce que dans la zone en traction, et de préférence aussi dans la zone en compression, on utilise des pièces en bois allongées (L) avec un module d'élasticité supérieur à une valeur limite déterminé, comme > 13.000N/mm2, et en ce que les pièces en bois allongées (L) prévues éventuellement entre celles-ci sont choisies à partir de pièces en bois allongées (L) avec un module d'élasticité plus faible.
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce que le module d'élasticité avant le collage est déterminé de façon approximative par mesure aux ultrasons ou par mesure sonique, ou au moyen d'un test de flexion ou d'un test en traction.
  15. Procédé selon l'une des revendications 12 à 14, caractérisé en ce que l'on usine du gros bois, en particulier du gros bois avec un diamètre à l'extrémité supérieure d'au moins 300 mm, par fraisage pour former du bois équarri à arêtes brutes, et en ce que le bois équarri est usiné pour former les pièces en bois allongés (L), de préférence par sciage à la scie à ruban.
  16. Procédé selon la revendication 15, caractérisé en ce que le sciage pour former les pièces en bois allongées (L) est exécuté approximativement le long de ou parallèlement aux canaux à moelle du bois équarri.
  17. Procédé selon la revendication 15 ou 16, caractérisé en ce que le sciage à la scie à ruban est exécuté approximativement à la moitié de la vitesse d'avance du fraisage.
  18. Utilisation d'une poutre composite en bois plein selon l'une des revendications 1 à 11, à titre d'élément de mur ou, dans un agencement couché, à titre d'élément de plafond.
EP06450064A 2005-05-02 2006-05-02 Poutre composite en bois Not-in-force EP1721714B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT06450064T ATE403529T1 (de) 2005-05-02 2006-05-02 Balkenbinder aus holz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0029005U AT8982U1 (de) 2005-05-02 2005-05-02 Balkenbinder aus holz

Publications (2)

Publication Number Publication Date
EP1721714A1 EP1721714A1 (fr) 2006-11-15
EP1721714B1 true EP1721714B1 (fr) 2008-08-06

Family

ID=36763261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06450064A Not-in-force EP1721714B1 (fr) 2005-05-02 2006-05-02 Poutre composite en bois

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EP (1) EP1721714B1 (fr)
AT (2) AT8982U1 (fr)
DE (1) DE502006001262D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT10624U1 (de) * 2008-02-04 2009-07-15 Holzindustrie Leitinger Ges M Vollholz-balkenbinder
SI2090413T1 (sl) 2008-02-14 2012-05-31 Geistlich Soehne Ag Lepljen lameliran tram
DE102009006971B4 (de) * 2009-01-30 2011-01-20 Fritz Egger Gmbh & Co. Verfahren zur Herstellung eines BSH-Lamellenträgers
AT11958U1 (de) * 2010-09-07 2011-08-15 Hans-Peter Ing Leitinger Verfahren zur verarbeitung von roh-rundholz und keilverzinkte holzverbundprodukte
EP2574436A1 (fr) * 2011-09-29 2013-04-03 Ludwik Olczyk Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1258456A (fr) * 1969-03-27 1971-12-30
US3580760A (en) * 1969-05-29 1971-05-25 Us Agriculture Process of making laminated wood product utilizing modulus of elasticity measurement
US5896723A (en) * 1995-06-21 1999-04-27 Sing; Peter Laminated wood structural units
DE19728259A1 (de) * 1997-06-25 1999-01-07 Fries Petra Herstellung eines Holzbalkens aus Rundholzkernbohlen
DE19936312A1 (de) * 1999-08-02 2001-04-19 Hofer C O Bidac Gmbh Srl Bernh Verfahren zum Zerteilen eines Naturrohstoffkörpers
EP1080857A2 (fr) * 1999-09-02 2001-03-07 Ensio Kuisma Bois lamellé collé et procédé de sciage de bois
WO2005040766A1 (fr) * 2003-10-27 2005-05-06 Holzindustrie Leitinger Gesellschaft M.B.H. Procede d'assurance de la qualite de bois de construction

Also Published As

Publication number Publication date
ATE403529T1 (de) 2008-08-15
DE502006001262D1 (de) 2008-09-18
EP1721714A1 (fr) 2006-11-15
AT8982U1 (de) 2007-03-15

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