SE537689C2 - Central junction between wooden structural elements and trusses - Google Patents

Central junction between wooden structural elements and trusses Download PDF

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Publication number
SE537689C2
SE537689C2 SE1351491A SE1351491A SE537689C2 SE 537689 C2 SE537689 C2 SE 537689C2 SE 1351491 A SE1351491 A SE 1351491A SE 1351491 A SE1351491 A SE 1351491A SE 537689 C2 SE537689 C2 SE 537689C2
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Sweden
Prior art keywords
fiber direction
screw
fiber
node according
structural element
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Application number
SE1351491A
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Swedish (sv)
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SE1351491A1 (en
Inventor
Greger Lindgren
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Martinson Group Ab
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Publication date
Application filed by Martinson Group Ab filed Critical Martinson Group Ab
Priority to SE1351491A priority Critical patent/SE537689C2/en
Priority to PCT/SE2014/051487 priority patent/WO2015088437A1/en
Priority to EP14870363.0A priority patent/EP3080362A4/en
Publication of SE1351491A1 publication Critical patent/SE1351491A1/en
Publication of SE537689C2 publication Critical patent/SE537689C2/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604Connections specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/16Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with apertured web, e.g. trusses
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604Connections specially adapted therefor
    • E04B2001/2652Details of nailing, screwing, or bolting
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00Roofs; Roof construction with regard to insulation
    • E04B7/02Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • E04B7/04Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs supported by horizontal beams or the equivalent resting on the walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D1/00Roof covering by making use of tiles, slates, shingles, or other small roofing elements

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

SAM MANDRAG FOreliggande uppfinning avser en knutpunkt mellan konstruktionselement av tra bestaende av ett konstruktionselement (1,2,11) med en forsta fiberriktning och ett konstruktionselement (3,3,3",13, 14) med en andra fiberriktning som är skild fra'n den fbrsta fiberriktningen, varvid ett flertal skruvforband (S,R) är anbringade far att farbinda konstruktionselementen och bilda en inbordes kontaktyta (M1,M2) kannetecknad av att skruvforbanden Jr anbringade i en sned vinkel a mot kontaktytan (M1,M2) samt att skruvforbanden Jr anbringade I riktning med en av fiberriktningarna. SUMMARY The present invention relates to a junction between structural elements of three consisting of a structural element (1,2,11) with a first fiber direction and a structural element (3,3,3 ", 13, 14) with a second fiber direction which is different from ' in the first fiber direction, a plurality of screw joints (S, R) being applied to connect the structural elements and forming an inboard contact surface (M1, M2), characterized in that the screw joints Jr are arranged at an oblique angle α to the contact surface (M1, M2) and that the screw joints Jr applied in the direction of one of the fiber directions.

Description

Knutpunkt mellan konstruktionselement av tra samt fackverk Foreliggande uppfinning avser en knutpunkt mellan konstruktionselement av tra samt fackverk innefattande sadan knutpunkt. The present invention relates to a junction between structural elements of wood and trusses comprising such a junction.

Vid sammanfogning av foretradesvis grovre konstruktionselement av tra (t.ex. balkar, limtrabalkar etc.) i en knutpunkt dar motande delar av konstruktionselementen uppvisar skilda fiberriktningar, dvs. dar fiberriktningarna ej är parallella, stalls stora krav p5 att knutpunkten t5I de krafter som uppst5r tillfoljd av belastningar p5 de ing5ende elementen i olika riktningar. Vid framstallningen av tyngre barande konstruktioner, sasom broar, takstolar och andra strukturer sker sammanfogningen idag vasentligen genom nyttjandet av spikpl5tar, inslitsade pl5tar, tandbrickor etc. Dessa losningar är b5de kostnadsoch materialkravande. Dessutom kravs anpassningar av ing5ende element och flera monteringssteg. Det har aven foreslagits att anvanda forspanda limforband for att sammanfoga knutpunkter av konstruktionselement uppvisande olika fiberriktningar. Det har dock visat sig att sadana limforband p5verkas negativt av t ex fuktig omgivning. When joining preferably coarser structural elements of wood (eg beams, glued wooden beams, etc.) in a junction where opposite parts of the structural elements have different fiber directions, ie. where the fiber directions are not parallel, great demands are made on the node to the forces arising due to loads on the constituent elements in different directions. In the production of heavier load-bearing structures, such as bridges, trusses and other structures, the joining today takes place essentially through the use of nail plates, slotted plates, tooth trays, etc. These solutions are both costly and material-intensive. In addition, adaptations of the included elements and several assembly steps are required. It has also been proposed to use prestressed adhesive joints to join nodes of structural elements having different fiber directions. However, it has been found that such adhesive dressings are negatively affected by, for example, humid environments.

Numera byggs alltfler stora lokaler i tramaterial. Det finns darfor behov att Oka rackvidden hos tyngre barande konstruktioner sasom takstolar. Darmed okar aven kraven p5 den lastupptagande formagan hos knutpunkterna i sadana konstruktioner. Dartill maste hansyn tas till brandsakerhet, monteringstid och monteringssvarighet samt kostnadsaspekter clarav. Nowadays, more and more large premises are being built in wooden materials. There is therefore a need to increase the rack width of heavier load-bearing structures such as trusses. Thus, the requirements p5 also increase the load-bearing shape of the nodes in such constructions. In addition, consideration must be given to fire safety, installation time and installation duration as well as cost aspects clarav.

Syftet med foreliggande uppfinning är att mildra eller overvinna de brister som forekommer inom kand teknik och astadkomma en knutpunkt av konstruktionselement av tra som har god lastupptagningsform5ga, är tillforlitlig och medger stora konstruktionsrackvidder. The object of the present invention is to alleviate or overcome the shortcomings which occur in prior art and to provide a junction of structural elements of wood which have a good load-bearing design, are reliable and allow large structural ranges.

Detta syfte uppnas med en knutpunkt som uppvisar de i patentkravet 1 angivna sardragen. This object is achieved with a node which has the features set out in claim 1.

Den uppfinningsenliga knutpunkten medfor att storre belastning kan tas upp i knuten i jamforelse med om skruvforbanden är vinkelrat anordnade mot konstruktionselementen. I den uppfinningsenliga knutpunkten tillvaratas skruvforbandens form5ga att absorbera axiell belastning, i synnerhet om skruvforbanden är anordnade s5 att belastningen p5 konstruktionselementet och knuten paverkar skruvforbandet i dragriktning. Detta har fordelen att fackverk av konstruktionsmaterial i tra som sammanfogas med den uppfinningsenliga knutpunkten kan bara storre !aster och darmed ha storre rackvidder an tidigare. 1 Den uppfinningsenliga knutpunkten har aven fordelen att fackverket kan byggas i brandklassat material, är avsevart billigare och p5verkas inte av fuktig omgivning till skillnad fr5n fackverk med knutpunkter framstallda av forspanda limforband. The node according to the invention means that a greater load can be taken up in the node in comparison with whether the screw connections are arranged perpendicularly to the construction elements. In the node according to the invention, the shape of the screw joints is absorbed to absorb axial load, in particular if the screw joints are arranged so that the load on the construction element and the joint influences the screw joint in the pulling direction. This has the advantage that trusses of construction material in wood which are joined to the node according to the invention can only have larger elastomers and thus have larger rack widths than before. The node according to the invention also has the advantage that the truss can be built in fire-rated material, is considerably cheaper and is not affected by a damp environment, unlike trusses with nodes made of prestressed adhesive joints.

Ytterligare sardrag och fordelar med uppfinningen och dess utforingsformer kommer att framg5 av de osjalvstandiga patentkraven och den foljande detaljerade beskrivningen av foredragna utforingsformer av uppfinningen. Further features and advantages of the invention and its embodiments will become apparent from the dependent claims and the following detailed description of preferred embodiments of the invention.

I den foljande detaljerade beskrivningen av utforingsformerna har for tydlighet valts speciella uttryck och benamningar for ingaende delar. Dessa uttryck och benamningar skall saledes ej tolkas som begransningar for, utan som exempel in, uppfinningens skyddsomf5ng. In the following detailed description of the embodiments, particular terms and designations have not been clearly chosen for the integral parts. These terms and designations are thus not to be construed as limitations on, but as an example of, the scope of the invention.

Fig. la visar en sidovy en forsta utforingsform av uppfinningen. Fig. 1a shows a side view of a first embodiment of the invention.

Fig. lb visar hur skruvforbanden är anbringade i en genombruten sidovy av utforingsformen visad i fig. la. Fig. 1b shows how the screw connections are arranged in a perforated side view of the embodiment shown in Fig. 1a.

Fig. lc visar ett tvarsnitt genom knutpunkten visad i fig. la. Fig. 1c shows a cross section through the node shown in Fig. 1a.

Fig. id visar en vy ovanifran p5 knutpunken visad i fig. la. Fig. Id shows a top view of the node shown in Fig. 1a.

Fig. 2 visar ett fackverk av konstruktionselement av tra med knutpunkter enligt uppfinningen. Fig. 2 shows a truss of structural elements of wood with nodes according to the invention.

Fig. 3a visar langsg5ende snittvy av fackverket enligt figur 2. Fig. 3a shows a longitudinal sectional view of the truss according to Fig. 2.

Fig. 3b visar snitt A-A av fackverket enligt fig. 3a. Fig. 3b shows section A-A of the truss according to Fig. 3a.

Fig. 3c visar snitt B-B av fackverket enligt fig. 3.a Fig. 4 visar ett fackverk av konstruktionselement av tra med en annan utforingsform av en knutpunkt enligt uppfinning. Fig. 3c shows sections B-B of the truss according to Fig. 3.a Fig. 4 shows a truss of structural elements of wood with another embodiment of a node according to the invention.

BESKRIVNING AV UTFORINGSFORMER Fig. la-id visar en forsta utforingsform av en uppfinningsenlig knutpunkt mellan konstruktionselement av tra. Knutpunkten är avsedd att anvandas i exempelvis ett fackverk for en takstol eller liknande byggnadselement (se fig.2) Konstruktionselementen utgors av en trabalkar, foretradesvis limtrabalkar vars fiberriktning overensstammer med balkens landriktning. DESCRIPTION OF EMBODIMENTS Figs. 1a-id show a first embodiment of a node according to the invention between construction elements of tra. The junction is intended to be used in, for example, a truss for a truss or similar building elements (see Fig. 2). The construction elements consist of a beam of beams, preferably glued beams whose fiber direction corresponds to the land direction of the beam.

Knutpunkten bildas av tv5 horisontella balkar 1,2 med en forsta fiberriktning, och en vinklad balk 3 med en andra fiberriktning som är skild fr5n den forsta fiberriktningen. Den horisontella balken kan vara en del av en Over- eller underram i ett fackverk, och den vinklade balken representerar en strava som sannnnanbinder rannarna i ett sAclant fackverk . Vinkeln nnellan den forsta fiberriktningen och den 2 andra fiberriktningen skiljer sig med en vinkel 13, ar 13 är mellan 0 och 900, foretradesvis mellan 30° och 70°. Vinken 13 valjs och anpassas efter knutpunktens placering i fackverket. The node is formed by two horizontal beams 1,2 with a first fiber direction, and an angled beam 3 with a second fiber direction which is different from the first fiber direction. The horizontal beam can be part of an over- or sub-frame in a truss, and the angled beam represents a beam that binds the gutters in a sAclant truss. The angle between the first fiber direction and the 2 second fiber direction differs by an angle 13, ar 13 is between 0 and 900, preferably between 30 ° and 70 °. Angle 13 is selected and adapted to the location of the node in the truss.

De tv5 horisontella balkarna 1,2 är parallellt anordnade med langsidorna 1.2 och 2.1 motst5ende varandra. Den vinklade balken 3 har en balkande 3.3 som är anordnad mellan de tv5 horisontella balkarnas langsidor och anligger sa att inbordes kontaktytor Ml. M2 bildas mellan den vinklade balkens ena langssida 3.1 och I5ngsidan 1.2 respektive den vinklade balkens andra langssida 3.2 langsidan 2.1. The two horizontal beams 1,2 are arranged in parallel with the long sides 1.2 and 2.1 opposite each other. The angled beam 3 has a beam 3.3 which is arranged between the long sides of the tv5 horizontal beams and abuts so that contact surfaces M1 are embedded. M2 is formed between one longitudinal side 3.1 of the angled beam and the longitudinal side 1.2 and the other longitudinal side 3.2 of the angled beam, respectively the long side 2.1.

Knutpunkten är vidare forsedd med ett flertal skruvforband S(1) -S(n), R(1)-R(n) som anbringas genom att skruvas genom en av de horisontella trabalkarna 1,2 med den forsta fiberriktningen och atminstone delvis genom den vinklade trabalken 3 med den andra fiberriktningen. Skruvforbanden S(1) - S(n), R(1)- R(n) forbinder darmed trabalkarna som anligger mot varandra langs den bildade kontaktytan. Skruvforbanden är distribuerade over ytan sa att belastningen blir jamnt fordelad over hela knutpunkten. Skruvforbanden kan forsankas i den horisontella trabalken, eller vara inskruvade utan forsankning. The node is further provided with a plurality of screw joints S (1) -S (n), R (1) -R (n) which are applied by screwing through one of the horizontal trabeams 1,2 with the first fiber direction and at least partly through the angled the beam 3 with the other fiber direction. The screw connections S (1) - S (n), R (1) - R (n) thereby connect the traverse beams which abut each other along the formed contact surface. The screw connections are distributed over the surface so that the load is evenly distributed over the entire node. The screw connections can be countersunk in the horizontal beam, or be screwed in without countersinking.

I det foljande beskrivs for enkelhets skull ett enskilt skruvforband, men beskrivningen är avsedd att galla ett flertal skruvforband anbringade p5 likartat sat i knutpunkten s5som visas i figurerna. In the following, for the sake of simplicity, an individual screw joint is described, but the description is intended to bile a plurality of screw joints applied to a similar set in the node as shown in the figures.

Den vinklade balken i fig. la-d belastas med en tryckkraft FT ned5t langs fiberriktningen. Fig. la-d visar att skruvforbandet, skruven S, skruvas in i en sned vinkel a mot kontaktytan M1 ( se fig. 1d). Vinkeln a motsvarar vinkeln mellan kontaktytan och skruven. Motsvarande vinkel a upptrader mellan skruven S och ytan hos den horisontella balkens I5ngsida 1.1. The angled beam in Figs. 1a-d is loaded with a compressive force FT down along the fiber direction. Figs. 1a-d show that the screw connection, screw S, is screwed in at an oblique angle α towards the contact surface M1 (see Fig. 1d). The angle α corresponds to the angle between the contact surface and the screw. The corresponding angle α occurs between the screw S and the surface of the longitudinal side 1.1 of the horizontal beam.

I fig. lb visas att skruvforbandet är inskruvat i riktning med en av fiberriktningarna, namligen den vinklade balkens fiberriktning. Skruven skruvas armed in i den horisontella balken med en vinkel a mot kontaktytan M1 och sa att skruvens axiella riktning vasentligen sammanfaller med den vinklade balkens fiberriktning och darmed aven i lastens riktning. Fordelen med detta är att vid belastning langs den vinklade balkens fiberriktning upptas lasten i skruvens axiella riktning. I detta fall är skruven S riktad snett ned5t i riktning med den andra fiberriktningen genom den horisontella balken och delvis genom den vinklade balken. Darmed astadkoms att den axiella belastningen , tryckkraften FT, riktad neclat i langdriktningen p5 den vinklade balken, dragbelastar skruvforbandet i skruvens axiella riktning. Fig. 1b shows that the screw joint is screwed in the direction of one of the fiber directions, namely the fiber direction of the angled beam. The screw is screwed into the horizontal beam at an angle α to the contact surface M1 and said that the axial direction of the screw substantially coincides with the fiber direction of the angled beam and thus also in the direction of the load. The advantage of this is that when loading along the fiber direction of the angled beam, the load is received in the axial direction of the screw. In this case, the screw S is directed obliquely downwards in the direction of the other fiber direction through the horizontal beam and partly through the angled beam. Thereby it is achieved that the axial load, the compressive force FT, directed neclat in the longitudinal direction p5 the angled beam, tensile loads the screw joint in the axial direction of the screw.

Den uppfinningsenliga knutpunkten kan darmed absorbera storre !aster, vilket medlar att en takstol som är sammanfogad p5 detta satt kan konstrueras med en storre rackvidd. 3 Av naturliga skal kan inte skruvens axelriktning helt sammanfalla med den vinklade balkens riktning, men till skillnad fran om skruvforbandet yore vinkelratt anbringat mot kontaktytan M1 innebar den uppfinningsenliga knutpunkten att skruvforbandets lastupptagningsformaga i axiell riktning utnyttjas och kan belastas i hogre grad. The node according to the invention can thus absorb larger elastomers, which means that a roof truss which is joined in this way can be constructed with a larger rack width. Of natural shells, the axial direction of the screw cannot completely coincide with the direction of the angled beam, but unlike the screw joint yore perpendicularly mounted to the contact surface M1, the node according to the invention meant that the load bearing capacity of the screw joint is used in axial direction and can be loaded to a greater degree.

Skruvarna kan vara helgangade eller delvis gangade. Skruvforbandet kan vara anbringat sa att skruvhuvudet anligger ytan av langsidan pa den horisontella balken eller vara forsankt. Antalet skruvforband valjs och anpassas till beraknad belastning pa knutpunkten. The screws can be fully threaded or partially threaded. The screw connection can be arranged so that the screw head abuts the surface of the long side of the horizontal beam or be countersunk. The number of screw connections is selected and adapted to the calculated load at the node.

I en annan utforingsform (visas i fig. 2, den vanstra knuten K.2) anbringas skruvforbanden S(1) -S(n), R(1)-R(n), i riktning med den vinklade balkens 3" fiberriktning sa att istallet en axiell belastning riktad uppat utmed langden pa den vinklade balken, dvs en dragkraft FD, dragbelastar skruvforbanden i skruvarnas axiella riktning. Skruvforbanden anbringas med vinkeln a mot kontaktytorna Ml, M2 samt riktade i lastens FD riktning, i detta fall i uppatgaende riktning och vasentligen i den vinklade balkens fiberriktning i figuren. In another embodiment (shown in Fig. 2, the left knot K.2), the screw joints S (1) -S (n), R (1) -R (n) are applied, in the direction of the fiber direction of the angled beam 3 "sa. instead of an axial load directed upwards along the length of the angled beam, ie a tensile force FD, tensile loads the screw joints in the axial direction of the screws. substantially in the fiber direction of the angled beam in the figure.

I ytterligare en annan utforingsform (ej visad i figur) kan skruvforbandet anbringas i riktning med den vinklade balkens fiberriktning sa att en axiell belastning, en dragkraft riktad uppat utmed langden pa den vinklade balken tryckbelastar skruvforbandet i skruvens axialled. Skruvforbandet anbringas cla motsatt lastens riktning, i sadant fall i nedatgaende riktning och vasentligen i den vinklade balkens fiberriktning i figuren. In yet another embodiment (not shown in the figure) the screw joint can be applied in the direction of the fiber direction of the angled beam so that an axial load, a tensile force directed upwards along the length of the angled beam pressurizes the screw joint in the axial direction of the screw. The screw connection is applied cla opposite the direction of the load, in such a case in the downward direction and essentially in the fiber direction of the angled beam in the figure.

For att skruven S(1)—S(n) skall belastas i skruvens axialriktning i knutpunkten bör vinkeln a mellan skruvens axialriktning och kontaktytan M1 valjas att vara mellan 0 och 70° fran ytan, foretradesvis mellan 0 och 40°. Om vinkeln a är mycket liten begransas antalet skruvar som kan anbringas i knutpunkten vilket reducerar lastupptagningen. Om vinkeln Jr stor avtar den onskade effekten att lasten langs den vinklade stravan skall tas upp i skruvens axiella riktning. In order for the screw S (1) —S (n) to be loaded in the axial direction of the screw at the node, the angle a between the axial direction of the screw and the contact surface M1 should be chosen to be between 0 and 70 ° from the surface, preferably between 0 and 40 °. If the angle α is very small, the number of screws that can be fitted in the node is limited, which reduces the load absorption. If the angle Jr is large, the desired effect decreases that the load along the angled strut should be taken up in the axial direction of the screw.

Det är fordelaktigt att skruvforbanden S(1)-S(n) och de motstaende skruvforbanden R(1)-R(n) är inskruvade sa att motstaende skruvar pa vardera sida om den vinklade balken 3 är distribuerade med en liten forskjutning for att undvika att skruvforbanden S(1)-S(n) och de motstaende skruvforbanden R(1)-R(n) mots i den vinklade balken. It is advantageous that the screw connections S (1) -S (n) and the opposite screw connections R (1) -R (n) are screwed in so that opposite screws on each side of the angled beam 3 are distributed with a small displacement to avoid that the screw connections S (1) -S (n) and the opposite screw connections R (1) -R (n) are opposite in the angled beam.

I fig. 1c och fig. 1d visas vidare att skruvforbanden S(1)-S(n), R(1)-R(n) är inskruvade delvis genom den vinklade balken 3 med den andra fiberriktningen. Beroende pa hur vinkeln a valjs, skruvens langd samt lasten som skall absorberas av knutpunkten kan skruvforbanden skruvas in genom hela den vinklade balken 3. 4 I fig. lc och fig.ld visas att ett flertal skruvforband S(1)-S(n), R(1)-R(n) Jr inskruvade i respektive horisontell balk 1,2 med den forsta fiberriktningen och delvis genom den vinklade balken 3. In Fig. 1c and Fig. 1d it is further shown that the screw connections S (1) -S (n), R (1) -R (n) are screwed in partly through the angled beam 3 with the other fiber direction. Depending on how the angle is chosen, the length of the screw and the load to be absorbed by the node, the screw joints can be screwed in through the entire angled beam 3. 4 In Figs. 1c and Fig. 1 it is shown that a plurality of screw joints S (1) -S (n) , R (1) -R (n) Jr screwed into the respective horizontal beam 1,2 with the first fiber direction and partly through the angled beam 3.

Skruvforbanden S(1)-S(n) och motst5ende skruvforband R(1)-R(n) är vinklade vinkeln a mot kontaktytan M1 respektive kontaktytan M2 och Jr vasentligen riktade langs med fiberriktningen hos den vinklade balkens fiberriktning som beskrivits ovan. Vid belastning av den vinklade balken langsmed dess fiberriktning samverkar skruvforbanden S(1)-S(n) med de motst5ende skruvforbanden R(1)-R(n) R(1) for att absorbera och ta upp lasten. The screw connections S (1) -S (n) and opposite screw connections R (1) -R (n) are angled at an angle α to the contact surface M1 and the contact surface M2 and Jr, respectively, substantially directed along the fiber direction of the fiber direction of the angled beam as described above. When loading the angled beam along its fiber direction, the screw joints S (1) -S (n) cooperate with the opposite screw joints R (1) -R (n) R (1) to absorb and absorb the load.

En annan utforingsform av knutpunkten enligt uppfinningen innefattar att knutpunkten är ytterligare forstarkt genom att sammanfoga de horisontella balkarna 1,2 med den vinklade balken 3 genom att limma ihop de inbordes kontaktytorna M1 och M2 for bildande av en limfog innan inskruvning av skruvforbanden i knutpunkten. Detta kan vara fordelaktigt i vissa applikationer nar omgivning och konstruktionselement medger det. Another embodiment of the node according to the invention comprises that the node is further reinforced by joining the horizontal beams 1,2 with the angled beam 3 by gluing the inboard contact surfaces M1 and M2 together to form an adhesive joint before screwing the screw joints into the node. This can be advantageous in some applications when the environment and design elements allow it.

Fig. 2 visar en del av ett fackverk 10 av konstruktionselement av tra. Fackverket innefattar tv5 knutpunkter K1, K2 enligt uppfinningen. I figuren visas att knutpunkterna Kl, K2 är anordnade direkt bredvid varandra genom att de vinklade balkarnas 3',3" andar 3.3', 3.3" Jr utformade att anligga mot varandra och bildar en inbordes kontaktyta M3. Knutpunkten K1 med den vinklade balken 3' är sammanfogad for att absorbera en tryckkraft FT som är belastar den vinklade balkens 3'. Skruvforbanden S(1)-S(n) och R(1)-R(n) är darfor inskruvade i snett ned5tgaende riktning i balken 3'. Knutpunkten K2 med den vinklade balken 3" är sammanfogad for att absorbera en dragkraft FD som belastar den vinklade balkens 3". Skruvforbanden S(1)-S(n) och R(1)-R(n) är darfor inskruvade i snett uppkg5ende riktning i balken 3". Fig. 2 shows a part of a truss 10 of structural elements of tra. The truss comprises tv5 nodes K1, K2 according to the invention. The figure shows that the nodes K1, K2 are arranged directly next to each other in that the angles 3.3 ', 3.3 "Jr of the angled beams 3', 3" are designed to abut each other and form an inboard contact surface M3. The node K1 with the angled beam 3 'is joined to absorb a compressive force FT which is loaded on the angled beam 3'. The screw connections S (1) -S (n) and R (1) -R (n) are therefore screwed in an oblique downward direction in the beam 3 '. The node K2 with the angled beam 3 "is joined to absorb a tensile force FD which loads the angled beam 3". The screw connections S (1) -S (n) and R (1) -R (n) are therefore screwed in an obliquely upward direction in the beam 3 ".

Fig. 3a visar en langsg5ende snittvy av fackverket, dar det tydligare franng5r att skruvforbanden Jr inskruvade i riktning med de vinklade balkarna 3' och 3". Fig. 3b visar snitt A-A av fackverket enligt fig. 3a, dar knutpunkten K1 Jr tryckbelastad langs balken 3' och skruvarna Jr armed skruvade med vinkel a mot kontaktytan Ml, M2 snett ned5t i riktning mot kontaktytan M3. Fig. 3c visar snitt B-B av fackverket enligt fig. 3a dar knutpunkten K2 Jr dragbelastad langs balken 3" och skruvarna är riktade med vinkel a mot kontaktytan Ml, M2 och snett uppat i balkens 3" fiberriktning p5 motsvarande sat. Fig. 3a shows a longitudinal sectional view of the truss, where it is clearer that the screw connections Jr are screwed in in the direction of the angled beams 3 'and 3 ". Fig. 3b shows section AA of the truss according to Fig. 3a, where the node K1 Jr is pressurized along the beam 3 'and the screws Jr armed screwed at an angle a to the contact surface M1, M2 obliquely downwards in the direction of the contact surface M3. Fig. 3c shows section BB of the truss according to Fig. 3a where the node K2 Jr is tensile loaded along the beam 3 "and the screws are directed at an angle a towards the contact surface M1, M2 and obliquely upwards in the 3 "fiber direction p5 of the beam corresponding to sat.

Fig. 4 visar en del av ett fackverk 20 av konstruktionselement av tra med en annan utforingsform av den uppfinningsenliga knutpunkten. Detta fackverk 20 innefattar knutpunkterna P1 och P2. Fig. 4 shows a part of a truss 20 of structural elements of tra with another embodiment of the node according to the invention. This truss 20 comprises the nodes P1 and P2.

Knutpunkten P1 bestar av ett konstruktionselement 11., aven kallad ramdel, med en forsta fiberriktning och tv5 konstruktionselement 13,14 med en andra fiberriktning som är skild fr5n den forsta fiberriktningen. I denna utforingsform av den uppfinningsenliga knutpunkten utgors de tva konstruktionselementen 13 ,14 av balkar, aven benamnda stravor, med en andra fiberriktning som är vinklad med vinkel p mot det horisontella konstruktionselementet 11 med den forsta fiberriktningen. The node P1 consists of a structural element 11, also called a frame part, with a first fiber direction and two structural elements 13, 14 with a second fiber direction which is different from the first fiber direction. In this embodiment of the node according to the invention, the two construction elements 13, 14 consist of beams, also called struts, with a second fiber direction which is angled at an angle p to the horizontal construction element 11 with the first fiber direction.

Ett flertal skruvforband S(1)-S(n), R(1)-R(n)är anbringade genom konstruktionselementen 13,14 med den andra fiberriktningen och atminstone delvis genom konstruktionselementet 11 med den forsta fiberriktningen for att forbinda konstruktionselementen och bilda en inbordes kontaktytor M1 och M2 mellan konstruktionselementen. Skruvforbanden är anbringade i en sned vinkel a mot kontaktytorna M1,M2. A plurality of screw joints S (1) -S (n), R (1) -R (n) are applied through the structural members 13, 14 with the second fiber direction and at least partially through the structural member 11 with the first fibrous direction to connect the structural members and form a contact surfaces M1 and M2 are embedded between the construction elements. The screw connections are arranged at an oblique angle α towards the contact surfaces M1, M2.

I knutpunkten P1 är skruvforbanden anbringade i riktning med fiberriktningen hos de vinklade balkarna 13,14 for att 5stadkomma att en axiell last p5 en vinklad balk 13,14 belastar skruvforbandet i skruvens axiella riktning. Knutpunkten P1 belastas av en axiell last, en tryckkraft FT, riktad neat i langdriktningen p5 den vinklade balken. I detta fall är darfor skruvarna S riktade snett neat i riktning med den andra fiberriktningen genom den vinklade balken13 och delvis genom den horisontella balken 11. Darmed 5stadkoms att den axiella belastningen, tryckkraften FT, dragbelastar skruvforbandet i skruvens axiella riktning. At the node P1, the screw connections are arranged in the direction of the fiber direction of the angled beams 13,14 in order to cause an axial load p5 of an angled beam 13,14 to load the screw connection in the axial direction of the screw. The node P1 is loaded by an axial load, a compressive force FT, directed neatly in the longitudinal direction p5 of the angled beam. In this case, therefore, the screws S are directed obliquely neatly in the direction of the second fiber direction through the angled beam 13 and partly through the horizontal beam 11. This ensures that the axial load, the compressive force FT, tensile loads the screw joint in the axial direction of the screw.

Knutpunkten P2 belastas pa motsatt sat av en axiellt riktad dragkraft ED riktad uppat utmed langden pa den vinklade balken 13', 14', dvs, kraften dragbelastar skruvforbanden i skruvarnas axiella riktning som är inskruvade snett uppat med en vinkel a mot kontaktytan M1 eller M2 genom de vinklade balkarna13' och 14' och delvis genom den horisontella balken 11. The node P2 is loaded on the opposite set by an axially directed tensile force ED directed upwards along the length of the angled beam 13 ', 14', i.e., the force tensile loads the screw joints in the axial direction of the screws which are screwed obliquely upwards at an angle a to the contact surface M1 or M2. the angled beams 13 'and 14' and partly through the horizontal beam 11.

Genom att sammanfoga fackverket med den uppfinningsenliga knutpunkten bade vid drag och tryckbelastade knutpunkter astadkoms att fackverkets lastupptagningsformaga &car vilket medger storre konstruktionsrackvidder. Dessutom är den uppfinningsenliga knutpunkten enkel och tidsbesparande vid montering och darmed kostnadseffektiv. 6 By joining the truss with the node according to the invention, both at tensile and pressure-loaded nodes, it is achieved that the truss' load-bearing capacity & car, which allows greater construction ranges. In addition, the node according to the invention is simple and time-saving during assembly and thus cost-effective. 6

Claims (10)

PATE NTKRAVPATE NTKRAV 1. Knutpunkt mellan konstruktionselement av tra bestaende av ett konstruktionselement (1,2,11) med en forsta fiberriktning och ett konstruktionselement (3,3',3",13, 14) med en andra fiberriktning som är skild fran den forsta fiberriktningen, varvid ett flertal skruvforband (S,R) är anbringade for att forbinda konstruktionselementen och bilda en inbordes kontaktyta (M1,M2), dar skruvforbanden är anbringade i en sned vinkel a mot kontaktytan (M1,M2) samt att skruvforbanden är anbringade i riktning med en av fiberriktningarna, kännetecknad av att en kontaktyta (M1, M2) bildas mellan en I6ngsida hos konstruktionselementet med den forsta fiberriktningen och en langsida hos konstruktionselementet med den andra fiberriktningen, att skruvforbanden är anbringade genom hela konstruktionselementet (1,2,11) med den forsta fiberriktningen och 6tminstone delvis genom konstruktionselementet (3,3',3",13,14) med den andra fiberriktningen, samt att skruvforbanden är anbringade i riktning med den andra fiberriktningen sA att en axiellt riktad last (Fd,FT) konstruktionselementet (3,3',3",13,14) med den andra fiberriktningen belastar skruvforbanden i skruvarnas axiella riktning.A node between structural elements of three consisting of a structural element (1,2,11) with a first fiber direction and a structural element (3,3 ', 3 ", 13, 14) with a second fiber direction which is different from the first fiber direction, a plurality of screw connections (S, R) are arranged to connect the construction elements and form an inboard contact surface (M1, M2), the screw connections being arranged at an oblique angle α to the contact surface (M1, M2) and the screw connections being applied in the direction of one of the fiber directions, characterized in that a contact surface (M1, M2) is formed between a long side of the construction element with the first fiber direction and a long side of the construction element with the second fiber direction, that the screw connections are applied through the entire construction element (1,2,11) with the first fiber direction and at least partially through the structural member (3,3 ', 3 ", 13,14) with the second fiber direction, and that the screw connections are applied in the direction of the second fiber direction. in the direction sA that an axially directed load (Fd, FT) the structural element (3,3 ', 3 ", 13,14) with the other fiber direction loads the screw joints in the axial direction of the screws. 2. Knutpunkt enligt krav 1 varvid skruvforbanden är anbringade i riktning med den andra fiberriktningen sa att en axiellt riktad last (Fd,FT) pa konstruktionselementet 14)med den andra fiberriktningen dragbelastar skruvforbanden i skruvarnas axiella riktning.Node according to claim 1, wherein the screw joints are arranged in the direction of the second fiber direction so that an axially directed load (Fd, FT) on the construction element 14) with the second fiber direction loads the screw joints in the axial direction of the screws. 3. Knutpunkt enligt krav 1 eller 2 varvid skruvforbanden Jr anbringade i riktning med den andra fiberriktningen sA att en axiellt riktad last (Fd,FT) pA konstruktionselementet (3,3',3",13, 14) med den andra fiberriktningen tryckbelastar skruvfOrbanden i skruvarnas axiella riktning.Node according to claim 1 or 2, wherein the screw joints Jr are arranged in the direction of the second fiber direction so that an axially directed load (Fd, FT) on the structural element (3,3 ', 3 ", 13, 14) with the second fiber direction pressurizes the screw joints. in the axial direction of the screws. 4. Knutpunkt enligt na'got av tidigare krav varvid vinkeln a är mellan 0 och 700 mot kontaktytan (M1,M2), foretradesvis mellan 0 och 40°.Node according to any one of the preceding claims, wherein the angle α is between 0 and 700 towards the contact surface (M1, M2), preferably between 0 and 40 °. 5. Knutpunkt enligt n5got av tidigare krav varvid den forsta fiberriktningen och den andra fiberriktningen skiljer sig med en vinkel [3, dar 13 är mellan 0 och 90°, foretradesvis mellan 30° och 700 .Node according to any one of the preceding claims, wherein the first fiber direction and the second fiber direction differ by an angle [3, where 13 is between 0 and 90 °, preferably between 30 ° and 700 °. 6. Knutpunkt enligt nagot av tidigare krav, dar skruvforbanden är anbringade genom hela konstruktionselementet (3,3',3",13,14) med den andra fiberriktningen och atminstone delvis genom konstruktionselementet (1,2,11) med den forsta fiberriktningen.Node according to any one of the preceding claims, wherein the screw connections are applied through the entire structural element (3,3 ', 3 ", 13,14) with the second fiber direction and at least partially through the structural element (1,2,11) with the first fiber direction. 7. Knutpunkt enligt nagot av tidigare krav dar ett konstruktionselement (1,2) med den forsta fiberriktningen är anordnad pa respektive langsida av konstruktionselementet (3,3',3") med den andra fiberriktning och att ett flertal skruvforband (S,R) är anbringade pa vardera konstruktionselement (1,2) med den forsta fiberriktningen och att skruvforbanden (S,R) samverkande absorberar axiell belastning pa konstruktionselementet (3,3%3") med den andra fiberriktningen. 7Node according to any one of the preceding claims, wherein a structural element (1,2) with the first fiber direction is arranged on the respective long side of the structural element (3,3 ', 3 ") with the second fiber direction and that a plurality of screw joints (S, R) are mounted on each structural member (1,2) with the first fiber direction and that the screw joints (S, R) cooperatively absorb axial load on the structural member (3.3% 3 ") with the second fiber direction. 7 8. Knutpunkt enligt nagot av tidigare krav dar ett konstruktionselement (13,14) med den andra fiberriktningen är anordnad pa respektive langsida av konstruktionselementet (11) med den forsta fiberriktningen och att ett flertal skruvforband (S,R) är anbringade pa vardera konstruktionselement (13,14) med den andra fiberriktningen och att skruvforbanden (S,R) samverkande absorberar axiell belastning pa konstruktionselementen (13,14) med den andra fiberriktningen.Node according to any one of the preceding claims, wherein a structural element (13, 14) with the second fiber direction is arranged on the respective long side of the structural element (11) with the first fiber direction and that a plurality of screw joints (S, R) are arranged on each structural element ( 13,14) with the second fiber direction and that the screw joints (S, R) cooperatively absorb axial load on the structural elements (13,14) with the other fiber direction. 9. Knutpunkt enligt nagot av tidigare krav, dar kontaktytan (M1,M2) är hoplimmad bildande en limfog.Node according to any one of the preceding claims, wherein the contact surface (M1, M2) is glued together to form an adhesive joint. 10. Fackverk av konstruktionselement av tra innefattande en knutpunkt enligt nagot av tidigare krav. -- 8 1/ DI ft .0 6 6 9 PO 6 6 9 6 6 / 66 / Ft fn 3bF19 Tvl Fi3 r1 11Trusses of wooden structural elements comprising a node according to any one of the preceding claims. - 8 1 / DI ft .0 6 6 9 PO 6 6 9 6 6/66 / Ft fn 3bF19 Tvl Fi3 r1 11
SE1351491A 2013-12-12 2013-12-12 Central junction between wooden structural elements and trusses SE537689C2 (en)

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Application Number Priority Date Filing Date Title
SE1351491A SE537689C2 (en) 2013-12-12 2013-12-12 Central junction between wooden structural elements and trusses
PCT/SE2014/051487 WO2015088437A1 (en) 2013-12-12 2014-12-11 Interconnection between construction elements of wood and truss structure
EP14870363.0A EP3080362A4 (en) 2013-12-12 2014-12-11 Interconnection between construction elements of wood and truss structure

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SE1351491A SE537689C2 (en) 2013-12-12 2013-12-12 Central junction between wooden structural elements and trusses

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE706759C (en) * 1937-06-16 1941-06-05 Samuel Voss Wood connection with metal screws
US4376362A (en) * 1979-02-21 1983-03-15 Steel Web Corporation Truss employing both metallic and non-metallic webs
WO1998057005A1 (en) * 1997-06-09 1998-12-17 Sfs Industrie Holding Ag Coupling purlin consisting of two or more wooden beams adjoining and overlapping each other longitudinally, as well as fastening element for joining two overlapping end areas of wooden beams for use as a coupling purlin
DE20003705U1 (en) * 2000-02-29 2001-07-12 Sfs Ind Holding Ag Heerbrugg Connection of two wooden beams that adjoin one another at least approximately at right angles
SE518698C2 (en) * 2001-03-26 2002-11-05 Martinsons Trae Ab Nodes between structural elements of wood
DE202008002697U1 (en) * 2008-02-26 2009-07-02 Abc Verbindungstechnik Gmbh & Co. Kg Connection for wooden beam constructions
DE102008027873B4 (en) * 2008-06-11 2010-05-12 Heinz Wieland Connection of two wooden beams

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SE1351491A1 (en) 2015-06-13
EP3080362A4 (en) 2017-04-19
WO2015088437A1 (en) 2015-06-18

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