WO2010054491A1 - Poutre de bois lamellé ou abouté en biais précontrainte - Google Patents

Poutre de bois lamellé ou abouté en biais précontrainte Download PDF

Info

Publication number
WO2010054491A1
WO2010054491A1 PCT/CH2009/000352 CH2009000352W WO2010054491A1 WO 2010054491 A1 WO2010054491 A1 WO 2010054491A1 CH 2009000352 W CH2009000352 W CH 2009000352W WO 2010054491 A1 WO2010054491 A1 WO 2010054491A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
sbh
kvh
glued
reinforcing
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.)
Ceased
Application number
PCT/CH2009/000352
Other languages
German (de)
English (en)
Inventor
Josef Scherer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2010054491A1 publication Critical patent/WO2010054491A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • E04C3/18—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with metal or other reinforcements or tensioning members
    • E04C3/185—Synthetic reinforcements
    • 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
    • E04C3/122—Laminated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/085—Tensile members made of fiber reinforced plastics

Definitions

  • CFRP lamellae are glued flat to the underside of laminated wood beams or glued-on wood beams.
  • Layer board Hplz carrier (SBH carrier) form a laminate of several glued together continuous boards, each about 2 to 4 cm board thickness. You use several, up to 10 layers of boards. Since natural wood is always available in limited lengths of 3-5 m, beams are produced, for example, in a length of 8 m on the other hand also by finger-jointing. When a finger jointing is a longitudinal connection for extending moldings or frame timbers.
  • the profile strips or frame timbers are milled with a special milling tool, the finger joint cutter, at their ends.
  • the resulting wedge-shaped prongs of a workpiece engage in the same profile of the subsequent workpiece.
  • gluing and pressing the bumps a very durable longitudinal connection is produced.
  • Individual bars produced in this way are then glued together to form a so-called wedge-galvanized wood carrier (KVH carrier).
  • the bumps are in the glued single beam over the length of the KVH wearer consciously at different points.
  • CFRP blades are then glued flat to the underside of these KVH beams to increase its load capacity.
  • This object is firstly achieved by a glued laminated wood or Keilzinkholz carrier (SBH or KVH carrier) with at least one eccentrically glued on one side, under tension reinforcing band made of a fiber composite material, which is characterized in that the SBH or KVH- Carrier has a deflection due to the internal prestressing of the reinforcing band in a range between 1/1000 and 1/100 of the length of the SBH or KVH carrier before its load during its installation, and that the prestressing of the at least one reinforcing band in the carrier Longitudinal center is higher than its bias in the SBH or KVH carrier end sections.
  • SBH or KVH carrier Keilzinkholz carrier
  • the object is achieved by a method for producing a glued laminated wood or Keilzinkholz carrier (SBH or KVH carrier) with at least one glued-in reinforcing tape, which is characterized in that on the train to be loaded on the side of the SBH or KVH- carrier for each devisklebende reinforcing tape a section for receiving the teachingklebenden reinforcing tape is introduced and thereafter from the longitudinal center of the SBH or KVH carrier from each reinforcing tape simultaneously on the same parallel sections with from section to section degressive decreasing tension is solidified by means of adhesive with the SBH or KVH carrier.
  • SBH or KVH carrier Keilzinkholz carrier
  • a production facility for carrying out the method, consisting of a device for clamping one or more standing mutually parallel reinforcing bands and for generating any same tensile force of 2OkN to 18OkN per reinforcing band on both sides of the clamping
  • FIG. 1 An SBH carrier with reinforcing tape
  • FIG. 1 A KVH carrier with reinforcing tape
  • FIG. 3 shows an SBH or KVH carrier with a torn-off amplification band due to too high a bias voltage, for the sake of plausibility in an exaggerated representation of the tears;
  • FIG. 4 An SBH or KVH carrier with a single degressively prestressed reinforcing strip according to the invention, for the
  • Figure 5 a SBH or KVH carrier with three degressively biased, mutually parallel reinforcing bands according to the invention, in a perspective view;
  • FIG. 6 shows an SBH or KVH carrier with a degressively prestressed reinforcing band, in which the pretensioning force covers a possible bending moment in the SBH or KVH carrier;
  • Figure 7 A production plant for the production of SBH or KVZ carriers with two degressive prestressed reinforcing bands.
  • a layer board wood carrier (SBH carrier) 2 is shown in Figure 1. It consists of a plurality of layers of wooden boards 14, which are glued together and pressed together, so that a laminate is formed, which greatly increases the strength of such a carrier. In this case, 2 to 10 layers of such boards 14 are used, each with a thickness of 2 to 4 cm. On the lower side of the beam, a milling cut 3 was introduced, in which a reinforcing tape 1 was glued.
  • SBH carrier layer board wood carrier
  • a finger-jointed timber support (KVH carrier) 2 is shown. It consists of a plurality of beam sections 15, which were first glued with their front sides. The end faces were prepared by wedge-shaped milled cut 16 for the gluing, hence the name wedge-zinc-wood carrier (KVH carrier). Beams of a plurality of such glued to the joints bar sections are then placed on each other in several layers and glued together and pressed together, so that a laminate is formed, which greatly increases the strength of such a carrier. Several layers of such composite beam sections are used. Depending on the number of layers one speaks of mono, duo, trio or multiblock profiles. On the lower side of the beam, a milling cut 3 was introduced, in which a reinforcing tape 1 was glued.
  • This SBH or KVH carrier 2 here contains a single reinforcing band 1 of very high bias voltage.
  • the SBH or KVH carrier 2 was provided with a longitudinal milling cut 3, which is only slightly wider than the thickness of the reinforcing strip 1.
  • Such a milling cut 3 has approximately a width of 1-8 mm, and a depth of at least 10 mm and a maximum of 100 mm. Therefore, the reinforcing tapes coming into this milling cut 3 pass through several wooden board plies.
  • the reinforcing tape 1 should just just fit into the milling cut 3, so neither pinch nor loosely lie in it.
  • the beam or SBH or KVH beam 2 was driven or slipped over its milling cut 3 over the prestressed reinforcing tape 1. Then, the gap between the reinforcing tape 1 and the milling cut 3 was pressed on both sides with an adhesive, for example, epoxy resin 4. Subsequently, the curing of the adhesive 4 under heat, whereby an intimate and extremely strong connection with the surrounding wood 5 was formed. All this was done under constant and constant bias of the reinforcing strip 1, which remained clamped with its two ends traction in a suitable device. Once the curing of the adhesive 4 is completed and the reinforcing tape 1 is potted accordingly, the bias of the reinforcing tape 1 can be solved.
  • an adhesive for example, epoxy resin 4.
  • the bias of the reinforcing strip 1 now has an effect on the SBH or KVH carrier 2.
  • the reinforcing tape 1 would like to contract very slightly inside the SBH or KVH carrier 2, but can not do so because of the non-positive encapsulation with the adhesive and the SBH or KVH carrier 2. It is the SBH or KVH carrier 2, which finally gives way. He first follows the slight contraction of the reinforcing tape 1 and because this is mounted only eccentrically, ie only on one of the long sides of the SBH or KVH support 2, this curves concavely around its side 6 with the in-lying reinforcement band 1. If the Reinforcement band 1 even slightly contracted, yet this contraction takes place uniformly over its entire length.
  • this tear-10 extends at a 5m long SBH or KVH beam 2 on both sides by about one meter.
  • the SBH or KVH carrier 2 While the SBH or KVH carrier 2 remains undamaged in a central region 7 and still acts in its interior the prestressed reinforcing strip 1 and forces it into a curvature as a result of the acting bias, the SBH or KVH carrier 2 runs at its ends in tangential sections 8 to the curvature, because in the end regions, the bias of the reinforcing strip 1 no longer acts.
  • the reinforcing strip 1 is there separated from the composite with the SBH or KVH carrier 2 because of the described tear.
  • the invention proceeds from this starting position one step further and creates a SBH or KVH carrier 2 of equal length and in the central region 7 equal or even higher bias voltage of the reinforcing strip 1, while avoiding a tearing of the reinforcing strip 1 in the End portions of the SBH or KVH carrier 2, as shown in Figure 4.
  • the key to this lies in the introduction of a degressive bias, starting from the longitudinal center or the central region 7 of the SBH or KVH carrier 2, where a maximum bias is allowed, which can easily be considerably larger than a previous constant bias over the entire SBH or KVH carrier length.
  • the reinforcing tape 1 is first biased to a maximum value, for example, up to 18OkN clamping force.
  • the SBH or KVH carrier 2 with its milling cut 3 is put over this prestressed reinforcing band 1.
  • Such a milling cut 3 has approximately a width of 1-8 mm, and a depth of at least 10 mm and a maximum of 100 mm. Therefore, the reinforcing tapes coming into this milling cut 3 pass through several wooden board plies.
  • a central region 7 of the milling cut 3 is encapsulated around the longitudinal center of the SBH or KVH carrier 2 with adhesive, for example with epoxy resin.
  • the adhesive is pressed into the milling cut 3 on both sides of the reinforcing strip 1.
  • this central region 7 of the milling cut 3 is exposed to the longitudinal center of the SBH or KVH carrier 2 of a heat source, for example blown with a hot air blower, which leads to more rapid curing of the adhesive in this area.
  • This middle or central section 7 around the longitudinal center of a 5 m long SBH or KVH carrier 2 may be, for example, 1 m in length.
  • FIG. 5 shows a further variant of such a SBH or KVH carrier 2 reinforced with degressively prestressed reinforcing bands, in a perspective representation.
  • the three reinforcing tapes 1 are here standing parallel to each other along the underside of the beam.
  • the adhesive was pressed into the three milling cuts 3, first in the central region 7, and subsequently the curing of the adhesive took place by the action of heat in the central region until the curing of the adhesive in this central section 7 had been completed.
  • the bias of the three reinforcing tapes 1 was simultaneously and uniformly reduced, and the portions 8 adjoining the central portion 7 on both sides were filled with adhesive, and this was cured by the action of heat. This can be done at the same time for these two sections 8, or a section 8 after another, that is, the heat source is first recognized at one section 8 and after curing of the same at the other section 8. It is important to maintain the same bias of the reinforcing bands 1 for these two sections 8.
  • FIG. 6 shows a SBH or KVH carrier 3 with a degressively prestressed reinforcing band 1 with zones of different inner tensile elongation at break.
  • the bending moment 15 is shown, which adjusts itself with a uniform external load.
  • the beam bends the most.
  • the inner reinforcing band has different biases. In the central area as given here, for example, a bias of 12 tons, then to this area then on both sides per 8 tons and in the outer end of each 4 tons.
  • a degressive bias or such Gradientenverank ceremonies can be achieved by an adhesive variation by using different adhesives for different sections.
  • the simplest, and in most cases completely adequate, is to work with just two gradient levels. In the middle of the carrier, a high and in the outer regions of the carrier a reduced bias voltage is generated. While an epoxy adhesive with a high tensile elasticity modulus of 3-5'OOON / mm 2 is used in the middle of the support, the bonding is carried out at the end of the support with a PU adhesive.
  • the PU adhesive has an E-modulus of approx. 200-1 OOON / mm 2 .
  • the milled or milled grooves are therefore filled in the central area with epoxy adhesive, and in the outer areas with a PU adhesive to bond the uniformly prestressed reinforcing tapes with the Schichbrettholz carrier. If the reinforcing band is then relaxed, it can contract slightly into the end region in the PU adhesive there because of its lower rigidity, and this tension is not transferred to the end regions in a hard manner.
  • PU adhesive has only about 10% of the stiffness of an epoxy adhesive, and therefore so the glued in tension element can release tension. The degree of preload is therefore reduced in the end regions, so that tearing is avoided - and a gradient anchorage thus arises by itself.
  • FIG. 7 A very special construction of a SBH or KVH carrier is shown in FIG. 7, as well as the associated torque curve of such a three-field carrier.
  • a three-field beam can namely be biased over the supports and in the field in different directions.
  • the three-field carrier is composed of 3 carrier sections of 12 lengths each to a total length of 36 m. It consists of a total of 5 wooden components, which are coupled together on site, ie at the construction site. The crosspoints are set so that they are each in the range of a moment zero. Under these circumstances, a preload in the support and in the field areas is possible.
  • the prestressed wooden girders are prepared accordingly so that the bias is placed on the underside of the box when the individual girders are moved in the field and on the top above the girder.
  • FIG. 8 shows a production plant for the production of laminated wood beams glued or reinforced according to the invention.
  • the system includes a tensioning device for clamping one or more reinforcing straps so that they extend parallel to each other and their lateral edges each extend in a plane perpendicular to the belt plane.
  • the tension may be created so that the straps are stationarily clamped on one side, or held there, by being wrapped around an end anchor plate 11 so as to create a self-clamping action thereon.
  • the opposite discs 12 are rotatable by means of, for example, a hydraulic or a mechanical drive with high reduction.
  • the two drive pulleys 12 are preferably of the same diameter, so that identical tensile forces are generated with the same drives.
  • this bias reduction is made only on one side of the tensioning device, it naturally acts on both sides of the hardened central region 7 of the reinforcing bands. Now the milling cuts 3 following the central area 7 are pressed in the areas 8 with adhesive. Once this adhesive has cured, the bias is further reduced in the same way and the bonding of the reinforcing tapes in the milling cuts 3 in the end sections 9 can be made. As soon as there, too, the adhesive is completely cured by the action of heat, the bias can be completely canceled, causing the laminated wood support easily curved like an arch bridge upwards, but with a constant radius of curvature. The reinforcing tapes are cut off at the two ends of the laminated wood beam and it is then ready for installation in a building.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

La poutre de bois lamellé ou abouté en biais (2) comprend au moins une bande de renforcement (1) en matériau renforcé par des fibres, collée de manière excentrée d'un côté, sous effort de traction. Elle subit avant sa charge une flexion en raison de la précontrainte interne de la bande de renforcement (1). Cette flexion représente 1/1000 à 1/300 de la longueur L du support (2) parce que la précontrainte de la bande de renforcement (1) au milieu de la longueur (7) de la poutre est supérieure à celle des parties d'extrémité de la poutre. Le procédé de fabrication se déroule de telle manière qu'une découpe pour la réception de la bande de renforcement (1) soit effectuée sur le côté de la poutre auquel il faut appliquer un effort de traction pour chaque bande de renforcement à coller. Ensuite, en partant du milieu de la longueur de la poutre, chaque bande de renforcement est fixée au moyen d'adhésif à la poutre de bois lamellé ou abouté en biais au-dessus des mêmes sections parallèles avec un effort de traction diminuant de section en section. L'installation de production est constituée d'un dispositif pour monter les bandes de renforcement s'étendant parallèlement entre elles et pour produire un effort de traction de 20 kN à 180 kN sur une partie restant libre d'au moins 4 mètres de long.
PCT/CH2009/000352 2008-11-17 2009-11-06 Poutre de bois lamellé ou abouté en biais précontrainte Ceased WO2010054491A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1788/08 2008-11-17
CH17882008A CH699945A2 (de) 2008-11-17 2008-11-17 Vorgespannte Schichtbrettholz- oder keilverzinkte Holz-Träger

Publications (1)

Publication Number Publication Date
WO2010054491A1 true WO2010054491A1 (fr) 2010-05-20

Family

ID=41665527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2009/000352 Ceased WO2010054491A1 (fr) 2008-11-17 2009-11-06 Poutre de bois lamellé ou abouté en biais précontrainte

Country Status (2)

Country Link
CH (1) CH699945A2 (fr)
WO (1) WO2010054491A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012044173A1 (fr) * 2010-09-29 2012-04-05 Arne Vaslag Poutre compacte précontrainte et son procédé de production
BE1019343A3 (fr) * 2010-05-21 2012-06-05 Haute Ecole Leonard De Vinci Produit de construction a base de bambou ou de bois de haute performance et procede de fabrication.
CN102794807A (zh) * 2012-09-03 2012-11-28 许文胜 一种建筑用预应力秸秆木方的生产方法
FR3012497A1 (fr) * 2013-10-30 2015-05-01 Lefevre M Procede de renforcement d'un element de construction en bois par assemblage d'un module de renfort mis en post-tension
CN109898714A (zh) * 2019-04-02 2019-06-18 上海应用技术大学 纤维片材混凝土双向叠合板密拼连接结构及实施方法
FR3091886A1 (fr) * 2019-01-21 2020-07-24 Josselin Guicherd Dispositif de liaison destiné à réaliser une liaison entre des éléments de constructions adjacents entre eux
CN111719774A (zh) * 2020-07-15 2020-09-29 广东海洋大学 预制装配式拓补受弯构件及其制作方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451639A1 (de) * 1974-10-30 1976-05-06 Hans Binker Verfahren zur erhoehung der festigkeit von hoelzern und anderen baustoffen
FR2691993A1 (fr) * 1992-06-03 1993-12-10 Caillaud Michel Poutres composées à membrures renforcées.
DE19742210A1 (de) * 1997-09-24 1999-03-25 Goehler Bernhard Dipl Ing Verfahren und bandförmiges Zugglied zur Ertüchtigung und/oder Sanierung von Stahlbeton- oder Spannbeton-Tragwerken sowie Vorrichtung zur Durchführung des Vefahrens
WO2000017465A1 (fr) * 1998-09-22 2000-03-30 Ernst Buchacher Liants de colle a bois renforces par des fibres de carbones
US6050047A (en) * 1996-04-12 2000-04-18 Borden Chemical, Inc. Reinforced composite wooden structural member and associated method
US6464811B1 (en) * 1998-02-26 2002-10-15 Eidgenössiche Materialprüfungs-und Forschungsanstalt EMPA Method and device for applying pretensed tension-proof reinforcing strips to a construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451639A1 (de) * 1974-10-30 1976-05-06 Hans Binker Verfahren zur erhoehung der festigkeit von hoelzern und anderen baustoffen
FR2691993A1 (fr) * 1992-06-03 1993-12-10 Caillaud Michel Poutres composées à membrures renforcées.
US6050047A (en) * 1996-04-12 2000-04-18 Borden Chemical, Inc. Reinforced composite wooden structural member and associated method
DE19742210A1 (de) * 1997-09-24 1999-03-25 Goehler Bernhard Dipl Ing Verfahren und bandförmiges Zugglied zur Ertüchtigung und/oder Sanierung von Stahlbeton- oder Spannbeton-Tragwerken sowie Vorrichtung zur Durchführung des Vefahrens
US6464811B1 (en) * 1998-02-26 2002-10-15 Eidgenössiche Materialprüfungs-und Forschungsanstalt EMPA Method and device for applying pretensed tension-proof reinforcing strips to a construction
WO2000017465A1 (fr) * 1998-09-22 2000-03-30 Ernst Buchacher Liants de colle a bois renforces par des fibres de carbones

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1019343A3 (fr) * 2010-05-21 2012-06-05 Haute Ecole Leonard De Vinci Produit de construction a base de bambou ou de bois de haute performance et procede de fabrication.
WO2012044173A1 (fr) * 2010-09-29 2012-04-05 Arne Vaslag Poutre compacte précontrainte et son procédé de production
CN102794807A (zh) * 2012-09-03 2012-11-28 许文胜 一种建筑用预应力秸秆木方的生产方法
CN102794807B (zh) * 2012-09-03 2014-12-03 许文胜 一种建筑用预应力秸秆木方的生产方法
FR3012497A1 (fr) * 2013-10-30 2015-05-01 Lefevre M Procede de renforcement d'un element de construction en bois par assemblage d'un module de renfort mis en post-tension
EP2868829A1 (fr) * 2013-10-30 2015-05-06 M Lefevre Procédé de renforcement d'un élément de construction en bois par assemblage d'un module de renfort mis en post-tension
FR3091886A1 (fr) * 2019-01-21 2020-07-24 Josselin Guicherd Dispositif de liaison destiné à réaliser une liaison entre des éléments de constructions adjacents entre eux
WO2020152155A1 (fr) * 2019-01-21 2020-07-30 Guicherd Josselin Dispositif de liaison destine a realiser une liaison entre des elements de constructions adjacents entre eux
CN109898714A (zh) * 2019-04-02 2019-06-18 上海应用技术大学 纤维片材混凝土双向叠合板密拼连接结构及实施方法
CN111719774A (zh) * 2020-07-15 2020-09-29 广东海洋大学 预制装配式拓补受弯构件及其制作方法

Also Published As

Publication number Publication date
CH699945A2 (de) 2010-05-31

Similar Documents

Publication Publication Date Title
EP2227605B1 (fr) Procédé de production d'un assemblage longitudinal pour composants en bois, et composant en bois correspondant
WO2010054491A1 (fr) Poutre de bois lamellé ou abouté en biais précontrainte
EP2997197B1 (fr) Procédé pour précontraindre un ouvrage en acier ainsi qu'ouvrage en acier ainsi précontraint
EP2808287B1 (fr) Procédé et dispositif pour le transport d'un mur de briques préfabriqué
EP1007809A1 (fr) Dispositif de renfort pour structures porteuses
DE2320213A1 (de) Bauplatte
EP1301669A1 (fr) Element de construction autoporteur et porteur de charge
DE2922797A1 (de) Verbundtraeger
EP2988910B1 (fr) Piece de construction, procede pour lier des elements en bois, programme
EP1058761B1 (fr) Procede et dispositif pour appliquer des bandes de renforcement pretendues, resistant a la traction sur des constructions
DE1252578B (de) Behalter wie Gehäuse mit mehrschichtiger Wandung
CH660392A5 (de) Schalungstraeger aus holz sowie verfahren zur herstellung eines derartigen holz-schalungstraegers.
WO1999032738A1 (fr) Armature pour surfaces d'elements constitutifs ou de batiments
EP1841930B1 (fr) Element de type support compose de parties individuelles, et procede et dispositif pour le realiser
DE2242329A1 (de) Traeger mit i-querschnitt und verfahren zu dessen herstellung
EP3612687A1 (fr) Poutre en treillis destinée au secteur de la construction et procédé de fabrication d'une telle poutre en treillis
DE102014119610A1 (de) Segmentierter Mast oder Stütze
AT316833B (de) Verfahren zum biegefesten Verbinden der Montagestoßenden zweier oder mehrerer Tragglieder einer Holzleimbaukonstruktion sowie Stahllamelle zur Durchführung des Verfahren
EP3105389A1 (fr) Poutre en bois
DE102019200046B3 (de) Spannbeton-Holz-Verbundplatte, insbesondere zum Einsatz als Gebäude-Decken- oder Wandplatte, und Verfahren zu deren Herstellung
DE4437570C2 (de) Verfahren zur Herstellung eines Bauwerks, insbesondere eines Gebäudes oder einer Brücke
EP0550803B1 (fr) Procédé d'assemblage de pièces en bois
EP2157271B1 (fr) Ebauche de porte et procédé de fabrication d'une ébauche de porte
DE1849463U (de) Schalungssatz aus schalungskoerpern und verbindungselementen.
EP4606968A1 (fr) Construction de poutre en bois lamellé-collé et procédé de fabrication de la structure de poutre en bois lamellé-collé

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09756128

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 08.09.2011)

122 Ep: pct application non-entry in european phase

Ref document number: 09756128

Country of ref document: EP

Kind code of ref document: A1