EP0577096A1 - Lattice girder, specially for three-dimensional framework structures - Google Patents

Lattice girder, specially for three-dimensional framework structures Download PDF

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Publication number
EP0577096A1
EP0577096A1 EP93110429A EP93110429A EP0577096A1 EP 0577096 A1 EP0577096 A1 EP 0577096A1 EP 93110429 A EP93110429 A EP 93110429A EP 93110429 A EP93110429 A EP 93110429A EP 0577096 A1 EP0577096 A1 EP 0577096A1
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EP
European Patent Office
Prior art keywords
struts
profile bars
belt profile
lattice girder
lattice
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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.)
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EP93110429A
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German (de)
French (fr)
Inventor
Thomas Triebel
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Mero Raumstruktur GmbH and Co
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Mero Raumstruktur GmbH and Co
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Publication of EP0577096A1 publication Critical patent/EP0577096A1/en
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    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Definitions

  • the invention relates to a lattice girder, in particular for space trusses, with two belt profile bars which are connected to one another by struts arranged in a zigzag shape.
  • the invention has for its object to eliminate the above shortcomings and to provide a lattice girder whose individual parts can be economically connected to one another while avoiding welding work.
  • Embodiments of the invention are based on the Sub-claims emerge.
  • the strength of the connection of the struts to the belt profile bars is further improved if the central web of the struts carrying the two flanges has a thickness which practically corresponds to the width of the longitudinal slots in the belt profile bars or if, according to yet another embodiment of the invention, the width of the flanges the struts correspond to the width of the chamber in the belt profile bars.
  • the central web of the struts is preferably perforated or otherwise perforated, which advantageously saves weight on the lattice girders.
  • the lattice girder 10 shown in FIG. 1 has two belt profile bars 11 which are connected to one another by struts 13 of the same type.
  • a screw or clamp connection 14 is attached to both ends of each belt profile rod 11.
  • This connection 14 can be connected to node pieces or profile pieces (not shown), by means of which a number of such lattice girders 10 can be combined to form a spatial structure, as is used, for example, in trade fair and exhibition construction.
  • the struts 13 are of the same type, each consist of a profile with an I-shaped cross section and consequently have a central web 15 and two flanges 16.
  • These struts 13 are, for example, extruded profiles, preferably made of aluminum, which have a surface finish.
  • the belt profile bars 11 also preferably consist of extruded aluminum profiles and are also surface-finished. Furthermore, the belt profile bars 11 have, for example, a box-shaped hollow cross section and a longitudinal slot 18 is arranged in the center on one of their narrow sides. Below the longitudinal slot 18, each belt profile rod 11 contains a chamber 19 which extends continuously in the longitudinal direction and which is delimited, for example, inwardly by a transverse web 20. The I-shaped cross section of the webs 13 is adapted to the belt profile rods 11, which is important in connection with the connection of the struts 13 to the belt profile rods 11.
  • the ends of the struts 13 are cut at an oblique angle, for example in accordance with FIG. 2 at an angle of 43 ° to the main axis of the struts 13.
  • the two flanges 16 of the struts 13 are provided on both sides at each end of the struts 13 with slots 21, which are worked out parallel to the front ends of the struts 13 and at a constant distance from them (FIG. 2).
  • the slots 21 extend to the central web or to a depth at which the remaining center piece c is slightly narrower than the width of the longitudinal slot 18.
  • the height h of the slots 21 is only slightly greater than the thickness d of the legs 22 of the Belt profile bars 11, between which the longitudinal slot 18 extends. Its width practically corresponds to the thickness of the central web 15 of the struts 13, the dimension of the central piece c.
  • the distance A between the respective outer edge of the slots 21 and the respective front end of the struts 13 can correspond, for example, to the clear height H of the chamber 19.
  • the struts 13 are inserted to form the zigzag-shaped arrangement according to FIG. 1, one after the other, in the belt profile bars 11, reversed, and, as can be seen in FIG. 4, they lock each other by touching their ends, while the outermost struts 13 of the lattice girder 10 are fixed to the belt profile rods 11 by clamping screws or similar fastening means, not shown.
  • the belt profile bars 11 with a hollow box-shaped cross section can be replaced by bars with a different hollow cross section, for example by bars 11 'with a round hollow cross section (FIG. 5). These also have a longitudinal slot 18 'and a chamber 19' underneath, which is delimited, for example, inwardly by a transverse web 20 which extends in the longitudinal direction of the rod 11 '.
  • the slots 21 on the struts 13 are here to be designed in a correspondingly arcuate or tangential manner, so that the ends of the struts 13 can be inserted in a suitable manner into the longitudinal slots 18 'and chambers 19' of the belt profile bars 11 '.
  • the latter also consist, for example, of an extruded profile, preferably made of aluminum, and are also surface-finished.
  • the overall height of the lattice girders 10 can be changed in a simple manner.

Abstract

Known lattice girders comprise two flange profile bars which are connected to each other via a so-called lattice, the lattice being welded to the flange profile bars at the points where it is bent. In order to avoid this welding work, use is made of flange profile bars (11) which have mutually opposite longitudinal slots (18) and, located therebeneath, chambers (19) extending in the longitudinal direction. Instead of the prior-art lattice, use is made of individual sloping members (13) with an I-shaped cross-section which is adapted to the flange profile bars (11). The ends of the sloping members (13) are cut at an angle and parallel with respect to one another. The two flanges (16) of the sloping members (13) are provided, at both ends, with slots (21) on both sides and parallel to the ends of the sloping members (13). Consequently, the sloping members (13) can be pushed, in a fitting manner, into the longitudinal slots (18) and chamber (19) of the flange profile bars (11), in which they are then mutually at rest. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Gitterträger, insbesondere für Raumfachwerke, mit zwei Gurtprofilstäben, die durch zick-zack-förmig angeordnete Streben miteinander verbunden sind.The invention relates to a lattice girder, in particular for space trusses, with two belt profile bars which are connected to one another by struts arranged in a zigzag shape.

Bei einem bekannten derartigen Gitterträger (MEROFORM-Bauteile-Katalog Bausystem M 12 - D 433 MF 2.90) sind die zwei Gurtprofilstäbe durch eine sogen. Gitterschlange aus einem zick-zack-förmig gebogenem Rundstab miteinander verbunden. Dabei ist die Gitterschlange mit ihren Knickstellen an den beiden Gurtprofilstäben angeschweißt. Diese Befestigungsmethode hat den Nachteil, daß die Einzelteile des Gitterträgers nicht vor ihrer Verbindung miteinander oberflächenveredelt werden können, sondern nur der Gitterträger als Ganzes, was unwirtschaftlich ist. Bei den Schweißarbeiten würde sonst der Oberflächenüberzug beschädigt werden.In a known lattice girder of this type (MEROFORM component catalog construction system M 12 - D 433 MF 2.90), the two belt profile bars are separated by a so-called. Lattice snake connected by a zigzag-shaped round rod. The grid snake is welded with its kinks to the two belt profile bars. This fastening method has the disadvantage that the individual parts of the lattice girder cannot be surface-finished before they are connected to one another, but only the lattice girder as a whole, which is uneconomical. Otherwise the surface coating would be damaged during the welding work.

Der Erfindung liegt die Aufgabe zugrunde, die obigen Mängel zu beseitigen und einen Gitterträger zu schaffen, dessen Einzelteile unter Vermeidung von Schweißarbeiten wirtschaftlich miteinander verbunden werden können.The invention has for its object to eliminate the above shortcomings and to provide a lattice girder whose individual parts can be economically connected to one another while avoiding welding work.

Gemäß der Erfindung wird obige Aufgabe dadurch gelöst, daß

  • a) die Gurtprofilstäbe einander gegenüberliegende Längsschlitze und darunter sich in Längsrichtung erstreckende Kammern und die Streben einen den Gurtprofilstäben angepaßten I-förmigen Querschnitt aufweisen,
  • b) die Stirnenden der Streben, je nach deren Neigung zu den Gurtprofilstäben, schiefwinkelig zugeschnitten sind und
  • c) die zwei Flansche der Streben an beiden Endbereichen beidseitig parallel zu den Stirnenden der Streben und in einem solchen Abstand von den Stirnenden geschlitzt sind, daß die Streben passend in die Längsschlitze und Kammern der Gurtprofilstäbe einschiebbar sind, wobei sich die Streben in den Gurtprofilstäben gegenseitig arretieren. Durch die Erfindung erfolgt somit unter Vermeidung von Schweißarbeiten eine einfache und zuverlässige Befestigung der Streben in den Gurtprofilstäben.
    Die Neigung der Streben zu den Gurtprofilstäben und damit die Gesamthöhe des Gitterträgers können einfach dadurch variiert werden, daß der Winkel, unter dem die Stirnenden der Streben zu deren Hauptachsen zugeschnitten sind, verändert wird. Die Gurtprofilstäbe können beispielsweise sowohl einen kastenförmigen, als auch runden hohlen Querschnitt aufweisen. Der Arbeitsaufwand für den Zuschnitt der Stirnenden und die Schlitzung der Flansche an den Streben ist verhältnismäßig gering, was auch für den Zusammenbau der Streben mit den beiden Gurtprofilstäben gilt.
According to the invention the above object is achieved in that
  • a) the belt profile bars have opposing longitudinal slots and underneath them extend in the longitudinal direction and the struts have an I-shaped cross section adapted to the belt profile bars,
  • b) the ends of the struts, depending on their inclination to the belt profile bars, are cut at an oblique angle and
  • c) the two flanges of the struts are slotted on both sides parallel to the front ends of the struts and at such a distance from the front ends that the struts can be inserted in the longitudinal slots and chambers of the belt profile bars, the struts mutually in the belt profile bars lock. The invention thus enables simple and reliable fastening of the struts in the belt profile bars while avoiding welding work.
    The inclination of the struts to the belt profile bars and thus the total height of the lattice girder can be varied simply by changing the angle at which the ends of the struts are cut to their main axes. The belt profile bars can, for example, have both a box-shaped and a round hollow cross section. The work involved in cutting the ends and slitting the flanges on the struts is relatively low, which also applies to the assembly of the struts with the two belt profile bars.

Augestaltungen der Erfindung gehen aus den Unteransprüchen hervor. So wird die Festigkeit der Verbindung der Streben mit den Gurtprofilstäben weiter verbessert, wenn der die zwei Flansche tragende Mittelsteg der Streben eine Dicke aufweist, die praktisch der Breite der Längsschlitze in den Gurtprofilstäben entspricht oder wenn nach noch einer weiteren Ausführungsform der Erfindung die Breite der Flansche der Streben der Breite der Kammer in den Gurtprofilstäben entspricht.Embodiments of the invention are based on the Sub-claims emerge. Thus, the strength of the connection of the struts to the belt profile bars is further improved if the central web of the struts carrying the two flanges has a thickness which practically corresponds to the width of the longitudinal slots in the belt profile bars or if, according to yet another embodiment of the invention, the width of the flanges the struts correspond to the width of the chamber in the belt profile bars.

Nach noch einer weiteren Ausgestaltung der Erfindung ist der Mittelsteg der Streben vorzugsweise gelocht oder anderweitig perforiert, wodurch man vorteilhaft eine Gewichtseinsparung bei den Gitterträgern erzielt.According to yet another embodiment of the invention, the central web of the struts is preferably perforated or otherwise perforated, which advantageously saves weight on the lattice girders.

Noch eine Ausbildung der Erfindung geht aus dem Anspruch 4 hervor.Another embodiment of the invention is set out in claim 4.

Die Erfindung wird anschließend anhand der Zeichnungen eines Ausführungsbeispiels erläutert. Es zeigen :

  • Figur 1 eine Schrägansicht eines Gitterträgers mit zwei Gurtprofilstäben, die erfindungsgemäß durch Streben miteinander verbunden sind;
  • Figur 2 eine Seitenansicht von einem Endabschnitt einer der Streben, die der Gitterträger der Figur 1 aufweist;
  • Figur 3 eine Schrägansicht eines Endabschnitts je eines Gurtprofilstabes und einer Strebe vor dem Einschieben derselben in diesen Gurtprofilstab;
  • Figur 4 einen vergrößerten Ausschnitt aus dem Gitterträger der Figur 1 und
  • Figur 5 eine Querschnittsansicht vor einem runden hohlen Gurtprofilstab, der gleichfalls für die erfindungsgemäße Herstellung eines Gitterträgers geeignet ist.
The invention is subsequently explained on the basis of the drawings of an exemplary embodiment. Show it :
  • Figure 1 is an oblique view of a lattice girder with two belt profile bars, which are connected to each other by struts according to the invention;
  • Figure 2 is a side view of an end portion of one of the struts that the lattice girder of Figure 1 has;
  • FIG. 3 shows an oblique view of an end section of a belt profile bar and a strut before the same is inserted into this belt profile bar;
  • Figure 4 shows an enlarged section of the lattice girder of Figure 1 and
  • Figure 5 is a cross-sectional view in front of a round hollow Gurtprofilstab, which is also suitable for the manufacture of a lattice girder according to the invention.

Der in Figur 1 gezeigte Gitterträger 10 weist zwei Gurtprofilstäbe 11 auf, die durch gleichartige Streben 13 miteinander verbunden sind. An beiden Enden eines jeden Gurtprofilstabes 11 ist ein Schraub- oder Klemmanschluß 14 angebracht. Dieser Anschluß 14 kann mit Knotenstücken oder Profilstücken verbunden werden (nicht gezeigt), durch welche eine Reihe solcher Gitterträger 10 zu einer Raumstruktur zusammengefügt werden können, wie sie beispielsweise im Messe- und Ausstellungsbau Anwendung findet.The lattice girder 10 shown in FIG. 1 has two belt profile bars 11 which are connected to one another by struts 13 of the same type. A screw or clamp connection 14 is attached to both ends of each belt profile rod 11. This connection 14 can be connected to node pieces or profile pieces (not shown), by means of which a number of such lattice girders 10 can be combined to form a spatial structure, as is used, for example, in trade fair and exhibition construction.

Die Streben 13 sind, wie schon oben erwähnt, gleichartig, bestehen jeweils aus einem Profil mit I-förmigem Querschnitt und weisen demzufolge einen Mittelsteg 15 und zwei Flansche 16 auf. Es handelt sich bei diesen Streben 13 um beispielsweise Strangpreßprofile, vorzugsweise aus Aluminium, die oberflächenverendelt sind.As already mentioned above, the struts 13 are of the same type, each consist of a profile with an I-shaped cross section and consequently have a central web 15 and two flanges 16. These struts 13 are, for example, extruded profiles, preferably made of aluminum, which have a surface finish.

Die Gurtprofilstäbe 11 bestehen gleichfalls vorzugsweise aus Strangpreßprofilen aus Aluminium und sind auch oberflächenveredelt. Ferner weisen die Gurtprofilstäbe 11 beispielsweise einen kastenförmigen hohlen Querschnitt auf und an einer ihrer Schmalseiten ist ein Längschlitz 18 mittig angeordnet. Unterhalb des Längsschlitzes 18 enthält jeder Gurtprofilstab 11 eine sich durchgehend in Längsrichtung erstreckende Kammer 19, welche beispielsweise nach innen durch einen Quersteg 20 begrenzt ist. Der I-förmige Querschnitt der Steben 13 ist den Gurtprofilstäben 11 angepaßt, was im Zusammenhang mit der Verbindung der Streben 13 mit den Gurtprofilstäben 11 von Bedeutung ist.The belt profile bars 11 also preferably consist of extruded aluminum profiles and are also surface-finished. Furthermore, the belt profile bars 11 have, for example, a box-shaped hollow cross section and a longitudinal slot 18 is arranged in the center on one of their narrow sides. Below the longitudinal slot 18, each belt profile rod 11 contains a chamber 19 which extends continuously in the longitudinal direction and which is delimited, for example, inwardly by a transverse web 20. The I-shaped cross section of the webs 13 is adapted to the belt profile rods 11, which is important in connection with the connection of the struts 13 to the belt profile rods 11.

Wie besonders aus den Figuren 2, 3 und 4 zu sehen ist, sind die Stirnenden der Streben 13 schiefwinkelig zugeschnitten, beispielsweise entsprechend Figur 2 unter einem Winkel von 43o zur Hauptachse der Streben 13. Dadurch werden die Neigung der Streben 13 zu den Gurtprofilstäben 11 und die Bauhöhe des Gitterträgers 10 vorbestimmt. Die beiden Flansche 16 der Streben 13 sind beidseitig an jedem Ende der Streben 13 mit Schlitzen 21 versehen, welche parallel zu den Stirnenden der Streben 13 und in konstantem Abstand von diesen ausgearbeitet sind (Figur 2). Die Schlitze 21 erstrecken sich bis zum Mittelsteg oder bis zu einer solchen Tiefe, bei der das verbleibende Mittelstück c geringfügig schmaler ist, als die Breite des Längsschlitzes 18. Die Höhe h der Schlitze 21 ist nur geringfügig größer als die Dicke d der Schenkel 22 der Gurtprofilstäbe 11, zwischen welchen sich der Längsschlitz 18 erstreckt. Dessen Breite entspricht praktisch der Dicke des Mittelstegs 15 der Streben 13 dem Maß des Mittelstücks c. Der Abstand A der jeweils äußeren Kante der Schlitze 21 zum jeweiligen Stirnende der Streben 13 kann beispielsweise der lichten Höhe H der Kammer 19 entsprechen. Aufgrund obiger Maßnahmen und dieser Bemessungen ist es daher möglich, die Streben 13 mit beiden Enden passend in die Längsschlitze 18 und Kammern 19 der beiden Gurtprofilstäbe 11 einzuschieben, wobei die Schenkel 22 in die Schlitze 21 eintreten und die Stirnenden der Streben 13 am Quersteg 20 auch aufsitzen können. Die Breite b der Flansche 16 ist nur geringfügig kleiner als die lichte Breite der Kammer 19.As can be seen particularly from FIGS. 2, 3 and 4, the ends of the struts 13 are cut at an oblique angle, for example in accordance with FIG. 2 at an angle of 43 ° to the main axis of the struts 13. As a result, the inclination of the struts 13 to the belt profile bars 11 and predetermined the height of the lattice girder 10. The two flanges 16 of the struts 13 are provided on both sides at each end of the struts 13 with slots 21, which are worked out parallel to the front ends of the struts 13 and at a constant distance from them (FIG. 2). The slots 21 extend to the central web or to a depth at which the remaining center piece c is slightly narrower than the width of the longitudinal slot 18. The height h of the slots 21 is only slightly greater than the thickness d of the legs 22 of the Belt profile bars 11, between which the longitudinal slot 18 extends. Its width practically corresponds to the thickness of the central web 15 of the struts 13, the dimension of the central piece c. The distance A between the respective outer edge of the slots 21 and the respective front end of the struts 13 can correspond, for example, to the clear height H of the chamber 19. Due to the above measures and these dimensions, it is therefore possible to insert the struts 13 with both ends into the longitudinal slots 18 and chambers 19 of the two belt profile rods 11, the legs 22 entering the slots 21 and the ends of the struts 13 on the crosspiece 20 as well can sit on. The width b of the flanges 16 is only slightly smaller than the clear width of the chamber 19.

Die Streben 13 werden zur Ausbildung der zick-zack-förmigen Anordnung gemaß Figur 1 nacheinander seitenverkehrt in die Gurtprofilstäbe 11 eingeschoben, wobei sie sich, wie aus Figur 4 hervorgeht, durch Berührung an ihren Stirnenden gegenseitig arretieren, während die jeweils äußersten Streben 13 des Gitterträgers 10 durch nicht gezeigte Klemmschrauben oder ähnliche Befestigungsmittel an den Gurtprofilstäben 11 festgesetzt sind.The struts 13 are inserted to form the zigzag-shaped arrangement according to FIG. 1, one after the other, in the belt profile bars 11, reversed, and, as can be seen in FIG. 4, they lock each other by touching their ends, while the outermost struts 13 of the lattice girder 10 are fixed to the belt profile rods 11 by clamping screws or similar fastening means, not shown.

Die Gurtprofilstäbe 11 mit hohlkastenförmigem Querschnitt können durch Stäbe mit anderem hohlen Querschnitt ersetzt werden, beispielsweise durch Stäbe 11' mit rundem hohlem Querschnitt (Figur 5). Diese weisen gleichfalls einen Längsschlitz 18' und eine darunter liegende Kammer 19' auf, die beispielsweise nach innen durch einen sich in Längsrichtung des Stabes 11' erstreckenden Quersteg 20 begrenzt ist. Die Schlitze 21 an den Streben 13 sind hier entsprechend bogenförmig oder tangential auszubilden, damit sich die Enden der Streben 13 in die Längsschlitze 18' und Kammern 19' der Gurtprofilstäbe 11' passsend einschieben lassen. Letztere bestehen zum Beispiel auch aus einem Strangpreßprofil aus vorzugsweise Aluminium und sind auch oberflächenveredelt.The belt profile bars 11 with a hollow box-shaped cross section can be replaced by bars with a different hollow cross section, for example by bars 11 'with a round hollow cross section (FIG. 5). These also have a longitudinal slot 18 'and a chamber 19' underneath, which is delimited, for example, inwardly by a transverse web 20 which extends in the longitudinal direction of the rod 11 '. The slots 21 on the struts 13 are here to be designed in a correspondingly arcuate or tangential manner, so that the ends of the struts 13 can be inserted in a suitable manner into the longitudinal slots 18 'and chambers 19' of the belt profile bars 11 '. The latter also consist, for example, of an extruded profile, preferably made of aluminum, and are also surface-finished.

Durch Veränderung des Neigungswinkels der Stirnenden der Streben 13 zu deren Hauptachse kann, wie bereits erwähnt, auf einfache Weise die Bauhöhe der Gitterträger 10 verändert werden.By changing the angle of inclination of the ends of the struts 13 to their main axis, as already mentioned, the overall height of the lattice girders 10 can be changed in a simple manner.

Claims (5)

Gitterträger, insbesondere für Raumfachwerke, mit zwei Gurtprofilstäben, die durch zick-zack-förmig angeordnete Streben miteinander verbunden sind, dadurch gekennzeichnet, daß a) die Gurtprofilstäbe (11) einander gegenüberliegende Längsschlitze (18) und darunter sich in Längsrichtung erstreckende Kammern (19) und die Streben (13) einen den Gurtprofilstäben (11) angepaßten I-förmigen Querschnitt aufweisen, b) die Stirnenden der Streben (13), je nach deren Neigung zu den Gurtprofilstäben (11) schiefwinkelig zugeschnitten sind und c) die zwei Flansche (16) der Streben (13) an beiden Endbereichen beidseitig parallel zu den Stirnenden der Streben (13) und in einem solchen Abstand von den Stirnenden geschlitzt sind (Schlitze 21), daß die Streben (13) passend in die Längsschlitze (18) und Kammern (19) der Gurtprofilstäbe (11) einschiebbar sind, wobei sich die Streben (13) in den Gurtprofilstäben (11) gegenseitig arretieren. Lattice girder, in particular for trusses, with two belt profile bars which are connected to one another by struts arranged in a zigzag shape, characterized in that a) the belt profile bars (11) opposing longitudinal slots (18) and underneath them extending in the longitudinal direction chambers (19) and the struts (13) have an I-shaped cross section adapted to the belt profile bars (11), b) the ends of the struts (13), depending on their inclination to the belt profile bars (11) are cut obliquely and c) the two flanges (16) of the struts (13) are slotted at both end regions on both sides parallel to the ends of the struts (13) and at such a distance from the ends (slots 21) that the struts (13) fit into the Longitudinal slots (18) and chambers (19) of the belt profile bars (11) can be inserted, the struts (13) locking each other in the belt profile bars (11). Gitterträger nach Anspruch 1, dadurch gekennzeichnet, daß der die zwei Flansche (16) tragende Mittelsteg (15) der Streben (13) eine Dicke aufweist, die praktisch der Breite der Längsschlitze (18) in den Gurtprofilstäben (11) entspricht.Lattice girder according to claim 1, characterized in that the central web (15) of the struts (13) carrying the two flanges (16) has a thickness which practically corresponds to the width of the longitudinal slots (18) in the belt profile bars (11). Gitterträger nach Anspruch 1, dadurch gekennzeichnet, daß die Breite (b) der Flansche (16) der Streben (13) der Breite der Kammern (19) in den Gurtprofilstäben (11) entspricht.Lattice girder according to claim 1, characterized in that the width (b) of the flanges (16) of the struts (13) corresponds to the width of the chambers (19) in the belt profile bars (11). Gitterträger nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der Mittelsteg (15) der Streben (13) gelocht oder anderweitig perforiert ist.Lattice girder according to claim 1, 2 or 3, characterized in that the central web (15) of the struts (13) is perforated or otherwise perforated. Gitterträger nach Anspruch 1, dadurch gekennzeichnet, daß die Gurtprofilstäbe (11) einen kastenförmigen oder runden hohlen Querschnitt aufweisen und die dem Längsschlitz (18) gegenüberliegende Kammer (19) nach innen durch einen Quersteg (20) begrenzt ist.Lattice girder according to claim 1, characterized in that the belt profile bars (11) have a box-shaped or round hollow cross-section and the chamber (19) opposite the longitudinal slot (18) is delimited inwards by a transverse web (20).
EP93110429A 1992-06-30 1993-06-30 Lattice girder, specially for three-dimensional framework structures Withdrawn EP0577096A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4221387A DE4221387C2 (en) 1992-06-30 1992-06-30 Lattice girders, especially for trusses
DE4221387 1992-06-30

Publications (1)

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EP0577096A1 true EP0577096A1 (en) 1994-01-05

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EP93110429A Withdrawn EP0577096A1 (en) 1992-06-30 1993-06-30 Lattice girder, specially for three-dimensional framework structures

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US (1) US5437136A (en)
EP (1) EP0577096A1 (en)
DE (1) DE4221387C2 (en)

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FR2731246A1 (en) * 1995-03-02 1996-09-06 Secalt LATTICE BEAM, PARTICULARLY TO FORM A SUSPENDED GATEWAY HOLDER
DE10301254B3 (en) * 2003-01-13 2004-08-05 Lamellenfenster Produktions- Und Vertriebsgesellschaft Mbh Eurolam Static sub-structure supporting fascia panels for exhibition display or stage scenery, pavilion, balcony construction or staircase
WO2009083638A2 (en) * 2007-12-28 2009-07-09 Rautaruukki Oyj Method for manufacturing a load-bearing steel structure of a building, and a load-bearing steel structure of a building
CN103348066A (en) * 2011-02-07 2013-10-09 正八技术有限公司 Mechanical joint device for grid support beam
US20210010280A1 (en) * 2018-03-20 2021-01-14 Peri Gmbh Formwork support comprising a hollow profile web, stiffened by an internal framework, as a flange connector

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US5664393A (en) * 1996-08-01 1997-09-09 Veilleux; Robert Structural wooden joist
DE19714996C2 (en) * 1997-04-10 2001-01-25 Octanorm Vertriebs Gmbh Lattice girders for the production of mobile buildings
EP1079039A1 (en) 1999-08-24 2001-02-28 M. Patrick Gobert Supporting structure and dismantlable truss members
ITMI20011721A1 (en) * 2001-08-03 2003-02-03 Severino Dona RETICULAR ARCHITRAVE
US20090272054A1 (en) * 2008-04-30 2009-11-05 Swain Jr Guillermo Pvc wall frame system
US20120324827A1 (en) * 2011-06-25 2012-12-27 James Forero Bracing system for reinforcing beams
AU2011232748B2 (en) * 2011-10-05 2016-05-26 Danpal Australia Pty Limited Truss System
US20140311829A1 (en) * 2013-04-23 2014-10-23 DDI, Inc. Tree stand
US20190343109A1 (en) * 2017-04-17 2019-11-14 Doran Ray Bittner Tree stand
CA3004659A1 (en) * 2018-05-11 2019-11-11 Thomas Chizek Structural support system
GB2588159B (en) * 2019-10-10 2024-01-03 James Hardie Frank An improved truss system
NL2026265B1 (en) * 2020-08-13 2022-04-13 Sixty82 B V Truss system as well as a ladder element and connecting frame for use therein
CN113787351B (en) * 2021-10-19 2022-07-19 常州机电职业技术学院 Welding machine for zigzag truss

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US1935758A (en) * 1929-03-27 1933-11-21 Gabriel Steel Company Truss
US3104454A (en) * 1959-09-28 1963-09-24 Mc Graw Edison Co Method of making structural members
US3129493A (en) * 1961-06-20 1964-04-21 Charles Davis Ltd Methods for the manufacture of lightweight structural members
US3656270A (en) * 1970-02-18 1972-04-18 United State Steel Corp Structural member
FR2226523A1 (en) * 1973-04-18 1974-11-15 Viessmann Hans
AT328695B (en) * 1974-03-04 1976-04-12 Farzad Taghi Dr LIGHT STRUCTURAL STRUCTURAL MADE OF THIN STEEL PLATE
GB2248645A (en) * 1990-10-12 1992-04-15 Alan Brookes Associates Truss

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731246A1 (en) * 1995-03-02 1996-09-06 Secalt LATTICE BEAM, PARTICULARLY TO FORM A SUSPENDED GATEWAY HOLDER
WO1996027060A1 (en) * 1995-03-02 1996-09-06 Societe D'etude Et De Construction D'appareils De Levage Et De Traction (Secalt S.A.) Lattice girder, in particular for forming a load-bearing guardrail on a suspended walkway
DE10301254B3 (en) * 2003-01-13 2004-08-05 Lamellenfenster Produktions- Und Vertriebsgesellschaft Mbh Eurolam Static sub-structure supporting fascia panels for exhibition display or stage scenery, pavilion, balcony construction or staircase
WO2009083638A2 (en) * 2007-12-28 2009-07-09 Rautaruukki Oyj Method for manufacturing a load-bearing steel structure of a building, and a load-bearing steel structure of a building
WO2009083638A3 (en) * 2007-12-28 2009-08-27 Rautaruukki Oyj Method for manufacturing a load-bearing steel structure of a building, and a load-bearing steel structure of a building
CN103348066A (en) * 2011-02-07 2013-10-09 正八技术有限公司 Mechanical joint device for grid support beam
CN103348066B (en) * 2011-02-07 2016-03-23 正八技术有限公司 Mechanical joint device for grid support beam
US20210010280A1 (en) * 2018-03-20 2021-01-14 Peri Gmbh Formwork support comprising a hollow profile web, stiffened by an internal framework, as a flange connector
US11585104B2 (en) * 2018-03-20 2023-02-21 Peri Se Formwork support comprising a hollow profile web, stiffened by an internal framework, as a flange connector

Also Published As

Publication number Publication date
DE4221387C2 (en) 1996-02-29
US5437136A (en) 1995-08-01
DE4221387A1 (en) 1994-01-05

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