DK154162B

DK154162B - LAMELED, LIMITED TREATMENT

Info

Publication number: DK154162B
Application number: DK260182A
Authority: DK
Inventors: Paul-Henri Mathis
Original assignee: Mathis Paul Sa Ets
Priority date: 1981-06-23
Filing date: 1982-06-10
Publication date: 1988-10-17
Also published as: EP0069040B1; DK260182A; FR2508084B1; DK154162C; FR2508084A1; ATE26732T1; EP0069040A2; EP0069040A3; DE3276125D1

Abstract

1. A lamellated and glued wooden beam consisting of a superposition of wooden laminations (2, 2') of two different types defining between them cavities (1) or the like which have a random cross-section, the two edges of the first type of lamination (2) being squared whereas only one edge of the second type of lamination (2') is squared, the other edge being provided with an edge-sawing, characterised in that the cavities (1) result from the arrangement of two laminations (2) of the first type, with squared edges, the width of which is equal to the width of the beam, placed at each side of two laminations (2') of the second type with only one squared edge in such a manner that squared edges of the two types of lamination are aligned to form the lateral faces of the beam, and that the sawn edges of the laminations (2') of the second type are arranged facing one another inside the beam, the use of frusto-conical balks or rough timber for the construction of the laminations having the effect that the general direction of the cavities (1) is not parallel to said lateral faces of the beam.

Description

1 DK 154162 B1 DK 154162 B

Den foreliggende opfindelse angår et lamelleret, limet trselement af den i indledningen til krav 1 angivne art.The present invention relates to a laminated, glued wood element of the kind set forth in the preamble of claim 1.

Sådanne træelementer anvende som bjælker eller dragere i bygningskonstruktioner .Such wooden elements use as beams or supports in building structures.

5 Et træelement af denne art er kendt fra beskrivelsen til schweizisk patent nr. 175.272, hvori er foreslået en not- og federforbindelse af lameller, der afgrænser hulrum. Dette element er kostbart at fremstille og har ikke vundet indpas.A wood element of this kind is known from the specification of Swiss Patent No. 175,272, which proposes a groove and feather connection of slats defining cavities. This item is expensive to manufacture and has not won.

Fra beskrivelsen til fransk patent nr. 962.589 kendes træelementer, 10 der er fremstillet ved at dele en stamme i fire dele og samle dem med de barkkantede sider indad, men dette har vist sig vanskeligt i praksis.From the specification of French Patent No. 962,589, wood elements 10 are known which are made by dividing a stem into four parts and joining them with the bark-edged sides inward, but this has proved difficult in practice.

2 DK 154162 B2 DK 154162 B

Fra beskrivelsen til DE patent nr. 396738 kendes et forslag til en drager bestående af lodret stående brædder, der er anbragt således, at ikke afrettede kanter skjules, og at ikke afrettede brædder anvendes til forbindelse af de øvrige brædder. Der forudsættes anvendt brædder af 5 forskellig højde, der samles, eksempelvis ved sømning, så at genanvendelse af brædder er mulig, men det er ikke tilstræbt eller muligt at fremstille elementer med rektangulært tværsnt ved de i dette patentskrift indeholdte anvisninger.From the specification of DE patent no. 396738, a proposal is made for a carrier consisting of vertical standing boards arranged so that non-aligned edges are concealed and that non-aligned boards are used for connection of the other boards. Boards of 5 different heights are assumed to be assembled, for example by seaming, so that re-use of boards is possible, but it is not sought or possible to produce rectangular cross-section elements by the instructions contained in this patent.

Opfindelsen har til formål at anvise et træelement af den art, der er beskrevet i DE patentskrift nr. 396738, men som kan fremstilles med rekt-10 angulært tværsnit, og som har plane ydre overflader.The invention has for its object to provide a wooden element of the kind described in DE patent specification 396738, which can be made of rectangular cross-section and which has flat outer surfaces.

Træelementet ifølge opfindelsen er ejendommeligt ved det i den kendetegnende del af krav 1 anførte.The wood element according to the invention is characterized by the characterizing part of claim 1.

Herved opnås et træelement af den omhandlede art med særlig gode egenskaber, fordi de kontinuerlige fibres kvaliteter udnyttes bedst muligt. Dette skyldes, 15 at de barkkantede træemner har et særligt højt indhold af kontinuerlige fibre i forhold til de fuldkantede trælameller, hvor der ofte vil forekomme overskårne fibre. Desuden kan næsten hele rumfanget af de oprindelige stammer, der ofte er koniske, udnyttes, og der kan opnås et rektangulært tværsnit.This results in a wood element of the kind in question with particularly good properties, because the qualities of the continuous fibers are best utilized. This is because the bark-edged wood blanks have a particularly high content of continuous fibers compared to the full-edged wood blades, where often cut fibers will occur. In addition, almost the entire volume of the original cones, which are often tapered, can be utilized and a rectangular cross section can be obtained.

En lidt ændret løsning af opfindelsens opgave er den sammenhørende opfin-20 delse, som er karakteriseret i krav 2.A slightly modified solution of the invention is the related invention characterized in claim 2.

Herved opnås, at proportionerne af hulrummene udnyttes til at give træelementet det for den pågældende funktion nødvendige inertimoment, og der kan alligevel opnås et rektangulært tværsnit, endog et parallelepipedisk tværsnit.Hereby, the proportions of the voids are obtained to give the wood element the moment of inertia required for the function in question, and yet a rectangular cross section, even a parallelepipedic cross section, can be obtained.

Det omhandlede træelement kan med fordel udføres som anvist i den 25 kendetegnende del af krav 3, hvorved styrken forøges i forhold til træelementer, hvor denne anvisning ikke er fulgt.Advantageously, the wood element can be carried out as described in the characterizing part of claim 3, whereby the strength is increased in relation to wood elements, where this instruction is not followed.

Opfindelsen forklares i det følgende nærmere under henvisning til tegningen, hvor fig. 1 viser et tværsnit gennem et træelement ifølge opfindelsen, 30 fig. 2 set fra oven et snit gennem elementet i fig. 1, fig. 3 set fra oven udskæringen af elementets dele og fig. 4 en ændret udførelsesform for elementet ifølge opfindelsen.The invention will now be explained in more detail with reference to the drawing, in which 1 is a cross-section through a wooden element according to the invention; FIG. 2 is a plan view through the element of FIG. 1, FIG. 3 is a top view of the cut-out of the parts of the element and FIG. 4 shows a modified embodiment of the element according to the invention.

I fig. 1 er vist et tværsnit gennem et lamelleret, limet træelement, der er dannet ved samling af fuldkantede trælameller 2 og delvis ubearbejdede træ-35 emner 2', mellem hvilke der er dannet hulrum 1, der er afgrænset ved anbringelse af delene 2 og 2'på en sådan måde, at to lammeller 2, der har samme bredde som elementet, er anbragt på begge sider af to delvis ubearbejdede emner l\ derIn FIG. 1 is a cross-sectional view of a laminated, glued wood member formed by assembling full-edge wood laminates 2 and partially unworked wood members 2 ', between which cavities 1 are delimited by placement of portions 2 and 2' in such a way that two slats 2 having the same width as the element are arranged on both sides of two partially unworked parts

3 DK 154162 B3 DK 154162 B

kun har én retlinet rand, og således at de retlinede rande danner siderne af elementet.has only one rectangular border, and so that the rectangular edges form the sides of the element.

Fig. .2 og 3 illustrerer udskæringen og anbringelsen af delene til det omhandlede element. 3 betegner et bræt, der opskæres efter to parallelle linier 4 til dannelse af en fuldkantet lamelle A og to ikke afrettede lameller B og C. Disse dele danner en del af et elementt ved at dreje lamellen B om linien 4 og ved at gøre det samme med lamellen C og desuden dreje den 180°,FIG. .2 and 3 illustrate the cutting and placement of the parts for the element in question. 3 denotes a board which is cut along two parallel lines 4 to form a full-edge laminae A and two non-aligned laminae B and C. These parts form part of an element by rotating the laminae B about line 4 and by doing the same with the slat C and also turn it 180 °,

Dette gentages, indtil de ønskede dimensioner af elementet er opnået.This is repeated until the desired dimensions of the element are achieved.

I fig. 4 er vist en lidt ændret udførelsesform, der er udført efter samme princip.In FIG. 4 shows a slightly modified embodiment, which is carried out according to the same principle.

Det i fig. 4 viste element er samlet skiftevis af en lamelle 2, der er fuldkantet eller ikke fuldkantet, og en ikke afrettet lamelle 2', hvilket giver mulighed for et valg af proportionerne af hulrummene 1 i forhold til lamellerne 2, 2'afhængig af deres forudsete funktion ved anvendelsen ved at forøge eller formindske overdækningen, idet dog foroven og forneden i elementet forudses anvendelse af fuldkantede lameller 2.The FIG. 4 is alternately assembled by a full-rim or non-full-rim lamella 2 and a non-lamellar lamella 2 ', which allows a choice of the proportions of the cavities 1 relative to the lamellae 2, 2', depending on their predicted function. in the use of increasing or decreasing the cover, however, the use of full-angled slats 2 is provided at the top and bottom of the element.

Herved opnås desuden, at de ikke afrettede lameller 2'kan anvendes i forholdsvis stor målestok.Hereby it is furthermore obtained that the non-executed slats 2 'can be used on a relatively large scale.

Lamellerne 2, 2'kan hensigtsmæssigt være fremstillet med yderzoner med kontinuitet af fibre, idet knaster holdes i midterzonen. Herved opnås en forbedring af bjælkens egenskaber, idet de sædvanlige træfejl kommer inden i de fremstillede elementer, hvor de ikke kan gøre så megen skade. Det er desuden ikke påkrævet at kassere så meget afrettet træ på grund af fejl.The slats 2, 2 'may conveniently be made with outer zones with continuity of fibers, keeping cams in the middle zone. This results in an improvement of the beam's properties, as the usual wood defects get inside the manufactured elements where they cannot do so much damage. Furthermore, it is not required to discard as much cut wood due to defects.

Hulrummene 1 kan tjene til fungicid, insekticid eller brandteknisk behandling, eller til passage af kabler, eller stålkabler eller andre ståldele til forbedring af egenskaberne.The cavities 1 can serve for fungicide, insecticide or fire engineering treatment, or for passage of cables, or steel cables or other steel parts to improve the properties.

Hulrummene 1 kan danne ventilationskanaler eller kanaler til fordeling af væske. Endelig kan hulrummene 1 være fyldt med isolerende masse eller brandslukkende materiale.The cavities 1 can form ventilation ducts or channels for distributing liquid. Finally, the cavities 1 may be filled with insulating pulp or fire-extinguishing material.

Ved det omhandlede træelement opnås en økonomisk konstruktion af en hvilken som helst længde og dimension, og det opnås ved næsten fuldstændig udnyttelse af hele rumfanget af de oprindelige stammer. Det er desuden muligt at anvende de ikke fuldkantede brædder. Selv med en kun middelkvalitet af træet opnås gode genskaber, idet de kontinuerlige fibres kvaliteter udnyttes bedst muligt.By the present wood element, an economical construction of any length and dimension is obtained, and this is achieved by almost complete utilization of the entire volume of the original stems. It is also possible to use the non-full boards. Even with only a medium grade of the wood, good properties are obtained, utilizing the qualities of continuous fibers to the best of their ability.

Vandret og lodret modstandsmoment er bedre end ved massive bjælker af samme materiale. Desuden er der mindre indre spændinger, fordi hulrum og fuldkantede brædder veksler.Horizontal and vertical resistance torque is better than with solid beams of the same material. Furthermore, there is less internal tension because voids and full-edged boards alternate.

Claims

1. A laminated, glued wood element made of full-edged wood slats (2) and partially unprocessed wood blanks (2 '), the raw edges of which face into voids (1), where these edges will not be seen so that the wood element has an outside view full-angled slats, characterized in that the cavities (1) are formed between two slats (2) of width equal to the width of the wooden element and two wooden blanks (2 ') with only one full-edged edge aligned with the full-edged edges of the slats (2) for forming the side surfaces of the wood member and with the unworked edges of the wood members (2 ') disposed in the interior of the wood member in such a way that the main direction 10 of the cavities (1) is inclined with respect to the side faces of the wood member.

2. Laminated, glued wood element made of full-edge wood slats (2) and partially unworked wood blanks (2 '), whose unworked edges face into cavities (1) where these edges will not be seen so that the wood element has an outside view full-angled slats, characterized in that the cavities (1) are formed by alternately disposing slats (2) and two wood blanks (2 ') in such a way that the full-edge edges of the slats (2) and wood blanks (2') form the side surfaces of the element, while the raw edges of the wood blanks (2 ') are disposed within the wood element in such a way that the proportions of the cavities (1) are selected depending on the predicted function of the element by increasing or decreasing the two-laminate cover ( 2), however, at the top and bottom of the element are fully angled slats (2).

Element according to any one of the preceding claims, characterized in that the slats (2) and the wood blanks (2 ') have edges having continuity 25 of fibers, the lugs being in the middle parts.