EP0079761B1 - Poutrelle I pleine - Google Patents

Poutrelle I pleine Download PDF

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Publication number
EP0079761B1
EP0079761B1 EP19820306003 EP82306003A EP0079761B1 EP 0079761 B1 EP0079761 B1 EP 0079761B1 EP 19820306003 EP19820306003 EP 19820306003 EP 82306003 A EP82306003 A EP 82306003A EP 0079761 B1 EP0079761 B1 EP 0079761B1
Authority
EP
European Patent Office
Prior art keywords
girder
web
plies
wood
laminated
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.)
Expired
Application number
EP19820306003
Other languages
German (de)
English (en)
Other versions
EP0079761A1 (fr
Inventor
Matti Kairi
Markku Lehtonen
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.)
Metsaliiton Teollisuus Oy
Original Assignee
Metsaliiton Teollisuus Oy
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 Metsaliiton Teollisuus Oy filed Critical Metsaliiton Teollisuus Oy
Publication of EP0079761A1 publication Critical patent/EP0079761A1/fr
Application granted granted Critical
Publication of EP0079761B1 publication Critical patent/EP0079761B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the dimensioning factor is bending flexure (span 1 in Figure 1).
  • the dimensioning factor is bending stress (span 2, Figure 1), and in the opposite extreme, in which the load is great and the span is short, the dimensioning factor is shearing stress (span 3 in Figure 1).
  • DE-A-2334524 shows an I-section girder made of wood material. This has a web formed from three plies; two outer plies having their grain parallel to the web length and a single, thicker ply sandwiched between them which has its grain transverse to the web length. The web is finger-jointed into a length of solid timber forming at least a major part of one boom of the I-section.
  • the girder described in DE-A-2334524 is of relatively small size with a typical height of 200 mm and a web thickness of about 25-30 mm. Such a girder is intended for relatively short term use supporting moulds during building word with short bearing spans and large shear forces.
  • I-girders having a minimum web of 65 mm are prescribed for use in public areas in Finland.
  • the fire resistance of an I-girder according to the invention is at minimum 1/2 hour.
  • Figure 3 shows a known laminated-wood girder made in the shape of an I-profile, having a web u and booms p.
  • Figure 4A depicts a known I-girder, in which the web u is made of plywood and fitted between wide booms p.
  • Figure 4B for its part shows an also known box-structured plywood girder.
  • Figure 5 depicts one example of the dimensioning of a girder according to the invention.

Landscapes

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

Claims (3)

1. Support robuste en forme de I, caractérisé en ce que:
- le corps intermédiaire (u) du support est réalisé à partir d'un bois de construction continu contre-plaqué présentant un certain nombre de feuillets, dont une partie environ dix à soixante pour cent, et de préférence trente pour cent du total présente un grain orienté transversalement par rapport à la longueur du corps intermédiaire (u), le reste des feuillets présentant un grain orienté parallèlement à la longueur du corps intermédiaire (u);
- les longerons (p) du support sont réalisés en un bois de construction contreplaqué présentant un grain orienté parallèlement à la
• longueur du corps intermédiaire (u).
2. Support robuste en forme de I, réalisé en un matériau à base de bois comprenant un corps intermédiaire (u) caractérisé en ce qu'il est réalisé par un empilement d'une pluralité de feuillets de bois parmi lesquels, environ dix à soixante pour cent ont leur grain orienté transversalement par rapport à la direction longitudinale du support, les feuillets restants ayant leur grain orienté parallèlement à ladite direction et constituant avec les parties étroites (p) aux bords du corps intermédiaire, une saillie qui se projette audelà des faces du corps intermédiaire pour donner une section en forme de I, lesdites parties étroites (p) étant des empilements d'une pluralité de feuillets de bois ayant leur grain orienté parallèlement à ladite direction.
3. Support en forme de 1 en accord avec la revendication 1 ou 2, caractérisé en ce que le corps intermédiaire (u) présente au moins une épaisseur de soixante cinq millimètres.
EP19820306003 1981-11-18 1982-11-11 Poutrelle I pleine Expired EP0079761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI813663A FI62887C (fi) 1981-11-18 1981-11-18 Grov i-balk
FI813663 1981-11-18

Publications (2)

Publication Number Publication Date
EP0079761A1 EP0079761A1 (fr) 1983-05-25
EP0079761B1 true EP0079761B1 (fr) 1986-02-26

Family

ID=8514880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820306003 Expired EP0079761B1 (fr) 1981-11-18 1982-11-11 Poutrelle I pleine

Country Status (5)

Country Link
EP (1) EP0079761B1 (fr)
CA (1) CA1196169A (fr)
DE (1) DE3269471D1 (fr)
DK (1) DK511282A (fr)
FI (1) FI62887C (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669243A (en) * 1985-11-06 1987-06-02 Truswal Systems Corporation Fire protective system and method for a support structure
FR2599770B1 (fr) * 1986-06-09 1991-11-15 Jomard Daniel Portiques realises a partir de ctbx, debits de bois traditionnels et broches en tube
US5377472A (en) * 1992-02-06 1995-01-03 Terenzoni; Bob Timber system
US6173550B1 (en) 1993-03-24 2001-01-16 Daniel A. Tingley Wood I-beam conditioned reinforcement panel
US5974760A (en) * 1993-03-24 1999-11-02 Tingley; Daniel A. Wood I-beam with synthetic fiber reinforcement
AU4005597A (en) 1996-08-19 1998-03-06 Les Bois Laumar Inc. Steel-wood system
CA2192427C (fr) * 1996-08-19 2001-07-31 Marcel Leblanc Poutrelle en bois a renfort d'acier
FR2764622A1 (fr) * 1997-06-17 1998-12-18 Paul Henri Mathis Poutre composite armee a base de fibres vegetales
CA2353202C (fr) 2001-07-17 2009-01-06 Guildo Deschenes Poutre de bois en i
ES2964354T3 (es) 2020-06-05 2024-04-05 Phylem Structures Sl Sistema estructural de madera técnica

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1825643U (de) * 1960-11-22 1961-01-26 Wilhelm Poppensieker Fa Stegplatte aus mehreren abwechselnd mit sperrholzschichten zusammengeleimten schichten.
AT298013B (de) * 1970-01-12 1972-04-25 Oesterr Doka Schalung Kastenträger aus Holz
FR2367883A1 (fr) * 1976-10-12 1978-05-12 Uhalde Bernier Sa Perfectionnements aux procedes de fabrication de charpentes en materiaux ligneux, procede tcp
GB1514879A (en) * 1976-10-22 1978-06-21 Nickerson & Co Ltd W Joints in wooden structural elements
DE8033681U1 (de) * 1980-12-18 1981-05-27 Achberger GmbH & Co KG, Karl, 8903 Bobingen Vorrichtung zum abstuetzen von bauelementen, schalungen o.dgl.

Also Published As

Publication number Publication date
EP0079761A1 (fr) 1983-05-25
CA1196169A (fr) 1985-11-05
FI62887B (fi) 1982-11-30
DE3269471D1 (en) 1986-04-03
FI62887C (fi) 1983-12-05
DK511282A (da) 1983-05-19

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