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EP0127554A1 - Membrures pour structure spatiale portante - Google Patents

Membrures pour structure spatiale portante Download PDF

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Publication number
EP0127554A1
EP0127554A1 EP84420086A EP84420086A EP0127554A1 EP 0127554 A1 EP0127554 A1 EP 0127554A1 EP 84420086 A EP84420086 A EP 84420086A EP 84420086 A EP84420086 A EP 84420086A EP 0127554 A1 EP0127554 A1 EP 0127554A1
Authority
EP
European Patent Office
Prior art keywords
members
section
spatial structure
des
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84420086A
Other languages
German (de)
English (en)
Other versions
EP0127554B1 (fr
Inventor
Georges Chailleux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cegedur Societe de Transformation de lAluminium Pechiney SA
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8308543A external-priority patent/FR2546208B1/fr
Priority claimed from FR8406165A external-priority patent/FR2562989B1/fr
Application filed by Cegedur Societe de Transformation de lAluminium Pechiney SA filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Publication of EP0127554A1 publication Critical patent/EP0127554A1/fr
Application granted granted Critical
Publication of EP0127554B1 publication Critical patent/EP0127554B1/fr
Expired legal-status Critical Current

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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
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1927—Struts specially adapted therefor of essentially circular cross section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1933—Struts specially adapted therefor of polygonal, e.g. square, cross section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1936—Winged profiles, e.g. with a L-, T-, U- or X-shaped cross section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • E04B2001/196—Screw connections with axis parallel to the main axis of the strut
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1975—Frameworks where the struts are directly connected to each other, i.e. without interposed connecting nodes or plates
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E04C2003/0417—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts demountable
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0421—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0439—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the cross-section comprising open parts and hollow parts
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0447—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0469—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section triangular-shaped
    • 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
    • E04C2003/0495—Truss like structures composed of separate truss elements the truss elements being located in several non-parallel surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/34—Branched
    • Y10T403/341—Three or more radiating members
    • Y10T403/342—Polyhedral

Definitions

  • the invention relates to members constituting the elements of a bearing spatial structure.
  • Spatial structures are known such as scaffolding, floors, frames, domes, etc. which are constituted by its tubular members, fixed for example, by axial screwing on nodes by means of a piece or end piece welded to this frame and comprising a corresponding thread - see for example FR 2 452 628-.
  • This tip may have, depending on the case, a cylindrical or frustoconical shape.
  • the present invention solves these difficulties by using members whose cross section of any shape, includes a central circular channel, and at least one of the ends of which is tapered, in order to release said central channel, for example in a conical or pyramidal shape.
  • members whose cross section of any shape includes a central circular channel, and at least one of the ends of which is tapered, in order to release said central channel, for example in a conical or pyramidal shape.
  • the size in the vicinity of the nodes is limited, without having recourse to a specific piece added by welding or other connecting means, such as that described in FR 2 452 628.
  • This arrangement also facilitates braking of the axial fixing screw, once in place, by ovalization of the central channel on either side thereof, using a manual or pneumatic clamp, usable on site, by exerting pressure in two diametrically opposite zones thereof.
  • the members according to the invention can also serve as connecting ends to be fixed in a simple tubular profile whose internal profile is equal to the external profile of the member considered; these tips can be straight or be machined into a tapered shape; they are fixed in the simple tubular profile by welding, gluing or any other means; this process is however better suited to prefabricated structures in the factory.
  • the members may have a closed tubular shape, simple, circular or polygonal, or an open section comprising two or more longitudinal channels. It may be, for example, a box girder of rectangular section, comprising a channel at each angle or a star with several branches carrying a channel at each of its ends.
  • FIG. 1 represents a structure comprising a rectangular post (1) and horizontal members (2), each comprising four channels (3) located in each of the internal angles of the member of rectangular section.
  • the members (2) are fixed to the post (1) using screws (4) which engage in the channels (3) whose ends have been tapped.
  • FIG. 2 represents various sections of members having several longitudinal channels (3).
  • Figure 3 shows various sections of members having a single central channel (3).
  • Figures 4 and 5 show a frame according to the invention, having an axial channel (3) connected to the cylindrical outer tubular form (5) by four fins (6). The end of the latter has been chamfered in a cone so as to release the central channel (3).
  • the frame on the one hand has a reduced front surface and on the other hand, this allows the fixing screw to be braked, once in place, by exerting the forces represented by the arrows.
  • FIG. 6 represents a tapered connecting end piece (a) produced by removing part (a) of the frame (2) -figure 3-, which is fixed to the end of a circular cylindrical tube (7) by the weld bead (8).
  • Figure 7 shows a straight connecting end piece (b) made by removing part (b) of the frame (2) -figure 3- and fixed by gluing (9) at the end of a tube (7).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L'invention se rapporte à des membrures constituant les éléments (2) d'une structure spatiale portante. Ces membrures (2), qui ont une section droite quelconque, comportent un canal circulaire central (3) dégagé à au moins une extrémité en vue de sa fixation sur le noeud correspondant; dans une autre variante, les membrures (2) peuvent également comporter plusieurs canaux axiaux. Un élément de ces membrures peut être utilisé comme pièce de liaison intermédiaire entre une membrure tubulaire simple et un noeud de la structure.

Description

  • L'invention se rapporte à des membrures constituant les éléments d'une structure spatiale portante.
  • On connaît des structures spatiales telles qu'échaufaudages, planchers, charpentes, dômes, etc... qui sont constituées par ses membrures tubulaires, fixées par exemple, par vissage axial sur des noeuds par l'intermédiaire d'une pièce ou embout soudé sur cette membrure et comportant un taraudage correspondant -voir par exemple FR 2 452 628-. Cet embout peut avoir suivant le cas une forme cylindrique ou tronconique.
  • Cette réalisation présente les inconvénients suivants :
    • - les opérations de soudage de l'embout taraudé à l'extrémité des tubes sont délicates et ne peuvent pas en général être exécutées sur chantier, avec une fiabilité suffisante,
    • - les dimensions de ces embouts, qui sont fonction des diamètres des tubes de membrure sont très variables ce qui exige un stock minimum pour réaliser tous les assemblages concernés,
    • - la longueur des tubes doit être fixée à l'avance en fonction de la distance exacte des noeuds à relier, avant fixation des embouts.
  • On connaît, par ailleurs, des structures spatiales constituées de membrures tubulaires de forme circulaire dont la fonction est de résister aux efforts longitudinaux de traction ou de compression (US 4 183 190).
    • - Cependant, dans la plupart des utilisations pratiques, les membrures supportent en plus des efforts axiaux, des efforts de flexion, souvent dans une direction préférentielle (par exemple verticale dans le cas de la pesanteur). Les profils, généralement autres que circulaires, présentant une forme et un moment d'inertie adaptés aux efforts subits, en vue d'une économie de matière, sont donc généralement utilisés.
    • - D'autre part, les liaisons de ces membrures sur les noeuds se font par l'intermédiaire d'une surface d'extrémité plane ou tout au moins d'une surface sphérique de projection égale à la section droite du tube cylindrique utilisé ; il en résulte un encombrement très important qui réduit le nombre et/ou la section unitaire des membrures utilisables, liées à un même noeud.
  • La présente invention résoud ces difficultés en utilisant des membrures dont la section droite de forme quelconque, comporte un canal circulaire central, et dont au moins une des extrémités est effilée, afin de dégager ledit canal central, par exemple selon une forme conique ou pyramidale. De cette façon, l'encombrement au voisinage des noeuds est limité, sans avoir recours à une pièce spécifique rapportée par soudage ou autre moyen de liaison, telle que celle décrite dans le FR 2 452 628.
  • Cette disposition facilite en outre le freinage de la vis axiale de fixation, une fois mise en place, par ovalisation du canal central de part et d'autre de celle-là, à l'aide d'une pince manuelle ou pneumatique, utilisable sur chantier, en exerçant une pression en deux zones diamétralement opposées de celui-ci.
  • Les membrures selon l'invention peuvent également servir d'embouts de liaison à fixer dans un profilé tubulaire simple dont le profil intérieur est égal au profil extérieur de la membrure considérée ; ces embouts peuvent être droits ou être usinés en une forme effilée ; ils sont fixés dans le profilé tubulaire simple par soudage, collage ou tout autre moyen ; ce procédé est cependant mieux adapté aux structures préfabriquées en usine.
  • Dans le cas de structures portantes, comportant des poteaux verticaux et des planchers horizontaux ou toitures, les membrures peuvent avoir une forme tubulaire fermée, simple, circulaire ou polygonale, ou une section ouverte comprenant deux canaux longitudinaux ou plus. Il peut s'agir, par exemple, d'une poutre caisson de section rectangulaire, comportant un canal à chaque angle ou d'une étoile à plusieurs branches portant un canal à chacune de ses extrémités.
  • Lorsque les membrures sont utilisées avec une coupe d'extrémité droite, leur mise en oeuvre sur chantier est très simple puisqu'il suffit :
    • - de couper le profilé à longueur,
    • - de tarauder le (ou les) canaux longitudinaux qu'il contient,
    • - de fixer le profilé sur le noeud à l'aide d'une (ou plusieurs) vis axiale(s).
    Dans certains cas, on peut même supprimer la deuxième étape en utilisant des vis auto-taraudeuses.
  • L'invention sera mieux comprise à l'aide des exemples suivants.
    • La figure 1 représente en perspective un assemblage d'un poteau vertical et de membrures horizontales selon l'invention.
    • La figure 2 représente des sections droites de diverses membrures selon l'invention, comportant plusieurs canaux axiaux.
    • La figure 3 représente une vue en bout des sections de diverses membrures selon l'invention, ne comportant qu'un canal central.
    • La figure 4 représente en perspective une membrure tubulaire dont la section droite est représentée à la figure 5.
    • Les figures 6 et 7 représentent une coupe axiale d'un embout de liaison réalisé avec les membrures selon l'invention et présentant une extrémité effilée selon l'invention (figure 5) ou une section droite (figure 6).
  • La figure 1 représente une structure comportant un poteau rectangulaire (1) et des membrures (2) horizontales, comportant chacune quatre canaux (3) situés dans chacun des angles internes de la membrure de section rectangulaire.
  • Les membrures (2) sont fixées au poteau (1) à l'aide de vis (4) qui s'engagent dans les canaux (3) dont les extrémités ont été taraudées.
  • La figure 2 représente diverses sections de membrures présentant plusieurs canaux longitudinaux (3).
  • La figure 3 représente diverses sections de membrures présentant un seul canal central (3). Dans le cas de la figure 3-1, les rainures longitudi- nales de la membrure (10) permettent la fixation de divers éléments de structure, tels que faux-plafonds, ou autres.
  • Les figures 4 et 5 représentent une membrure suivant l'invention, présentant un canal axial (3) relié à la forme tubulaire extérieure cylindrique (5) par quatre ailettes (6). L'extrémité de celle-ci a été chanfreinée en cône de manière à dégager le canal central (3). De ce fait, la membrure présente d'une part une surface frontale réduite et d'autre part, cela permet le freinage de la vis de fixation, une fois en place, en exerçant les efforts représentés par les flèches.
  • La figure 6 représente un embout de liaison effilé (a) réalisé par prélèvement de la partie (a) de la membrure (2) -figure 3-, qui est fixé à l'extrémité d'un tube cylindrique circulaire (7) par le cordon de soudure (8).
  • La figure 7 représente un embout de liaison droit (b) réalisé par prélèvement de la partie (b) de la membrure (2) -figure 3- et fixé par collage (9) à l'extrémité d'un tube (7).

Claims (5)

1°/ Membrure pour structure spatiale réticulée (2), de section droite de forme extérieure quelconque et comportant un seul canal (3), dans sa zone centrale, caractérisée en ce qu'au moins l'une de ses extrémités est effilée de manière à dégager ledit canal central.
2°/ Utilisation d'une section droite courant de la membrure selon la revendication 1, pour constituer un embout de liaison entre une membrure tubulaire simple et un noeud de la structure.
3°/ Utilisation de l'extrémité de la membrure selon la revendication 1, pour constituer un embout de liaison entre une membrure tubulaire simple et un noeud de la structure.
4°/ Membrure pour structure spatiale réticulée, caractérisée en ce qu'elle comporte au moins deux canaux longitudinaux (3).
5°/ Membrure selon l'une des revendications 1 ou 4, caractérisée en ce que sa surface extérieure comporte une ou plusieurs rainures longitudinales (10).
EP84420086A 1983-05-17 1984-05-14 Membrures pour structure spatiale portante Expired EP0127554B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8308543A FR2546208B1 (fr) 1983-05-17 1983-05-17 Membrures pour structure spatiale reticulee
FR8308543 1983-05-17
FR8406165 1984-04-16
FR8406165A FR2562989B1 (fr) 1984-04-16 1984-04-16 Membrures pour structures portantes a canal axial

Publications (2)

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EP0127554A1 true EP0127554A1 (fr) 1984-12-05
EP0127554B1 EP0127554B1 (fr) 1987-05-06

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EP84420086A Expired EP0127554B1 (fr) 1983-05-17 1984-05-14 Membrures pour structure spatiale portante

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EP (1) EP0127554B1 (fr)
DE (1) DE3463537D1 (fr)

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DE4307920A1 (de) * 1993-03-12 1994-09-15 Zeller Plastik Koehn Graebner Profil-System
JP5811946B2 (ja) * 2012-05-16 2015-11-11 株式会社オートネットワーク技術研究所 ワイヤハーネス
EP3728100B1 (fr) 2017-12-19 2023-09-06 3M Innovative Properties Company Bossoir d'espace confiné
GB201800400D0 (en) * 2018-01-10 2018-02-21 Modular Walling Systems Ltd Structural components

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Also Published As

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DE3463537D1 (en) 1987-06-11
EP0127554B1 (fr) 1987-05-06
US4674256A (en) 1987-06-23

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