EP0434559A1 - Assembling by interlocking of two Z-profiles for the realization of a purlin, transom or floor support - Google Patents

Assembling by interlocking of two Z-profiles for the realization of a purlin, transom or floor support Download PDF

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Publication number
EP0434559A1
EP0434559A1 EP90403686A EP90403686A EP0434559A1 EP 0434559 A1 EP0434559 A1 EP 0434559A1 EP 90403686 A EP90403686 A EP 90403686A EP 90403686 A EP90403686 A EP 90403686A EP 0434559 A1 EP0434559 A1 EP 0434559A1
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EP
European Patent Office
Prior art keywords
profile
assembly
section
profiles
wing
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Application number
EP90403686A
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German (de)
French (fr)
Inventor
Jean Mouty
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PROFILCOMETUBE
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PROFILCOMETUBE
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Publication of EP0434559A1 publication Critical patent/EP0434559A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • E04B7/022—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames
    • E04B7/024—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames the trusses or frames supporting load-bearing purlins, e.g. braced purlins
    • 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
    • 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
    • E04C2003/0434—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 open cross-section free of enclosed cavities
    • 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
    • E04C2003/0482—Z- or S-shaped

Definitions

  • the present invention relates to an assembly of sections of bent sheet metal with a straight cross-section in Z, in particular for the production of a purlin intended to support a horizontal or substantially horizontal roof element, or for the production of a heald intended for support a vertical or substantially vertical cladding element, or else for the production of a profiled part constituting a floor support.
  • This assembly is carried out by interlocking two identical Z-section profiles, which each have two parallel flanges with one another and of different widths, formed at the level of the lateral wings which border the central core of the Z.
  • the first purlins, beams or other profiled parts intended to support a large-area construction element were profiles with a straight I-section, the common mechanical weakness of which is to have too much flexibility in bending.
  • the Z-section works on bending, the forces to which the said section is subjected acting transversely to its length.
  • the Z-section bends and deforms and then, unlike its neutral fiber, generally central, the length of which has not varied, the section fibers located on its concave side are shortened and are therefore subject to compression, while those located on its convex side are elongated.
  • the first of the two aforementioned techniques has the disadvantage of being very expensive, because of the additional manipulations that it involves for the laying of ivies, and the second technique, the most used, remains nevertheless insufficient to obtain absolute stability and avoid any spillage phenomenon.
  • purlins and stringers are long profiled parts also subjected to bending, which results in an arrow whose maximum height is located halfway between the two supports of each purlin.
  • each of said Z profiles comprises two longitudinal flanges joined by a core, said two flanges each being formed of a first wing which constitutes a return of the core and a second wing which constitutes a return of the first wing, said first two wings of each Z-section being parallel to each other and of different widths and such that that of the widest first wing is slightly greater than the width of the first wing the narrowest increased by twice the thickness of the sheet metal of the profile, so that the narrowest flange of a first Z-profile can fit into the widest flange of a second identical Z-profile in first section audit section.
  • the aim of the present invention is to remedy the aforementioned drawbacks, and for this purpose it proposes another type of assembly of Z-profiles for the production of a purlin or a heddle, assembly which, due to its shape, is stiff in torsion and therefore has excellent spill resistance.
  • the present invention therefore has for first object an assembly of sheet metal profiles folded with a straight cross section in Z, in particular for the production of a purlin, a stringer or a floor support, each of said Z profiles being of type comprising two longitudinal flanges joined by a core, said two flanges each being formed of a first wing which constitutes a return of the core and of a second wing which constitutes a return of the first wing, said first two wings of each Z-section being parallel to each other and of different widths and such as that of the widest first wing is slightly greater than the width of the first narrowest wing increased by twice the thickness of the sheet metal of the profile, so that the narrowest flange of a first Z-profile can fit into the most flange wide of a second identical Z-section in section to said first profile, said assembly being of the kind constituted by the joining by interlocking of their flanges of two identical Z-section profiles arranged head to tail, the narrow sole of each profile then being arranged substantially in the
  • each Z-shaped section of the assembly forms with the first wing of each of its two flanges a dihedral whose angle is equal to 90 °.
  • each Z-shaped section of the assembly forms with the first wing of each of its two flanges a dihedral whose angle is different from 90 °.
  • the webs of the two Z-shaped sections which constitute the assembly according to the invention can be joined over at least part of their height by spacers.
  • each spacer can be either a section with a U-shaped cross section which extends perpendicular to the direction general of the assembly, each wing of this U being made integral with the face of the core of a profile which is turned towards the core of the other profile, ie a tube of quadrangular section which extends perpendicularly to the general direction of assembly, two opposite walls of this tube being made integral with the webs of the two Z-profiles assembled, each joined wall being for this purpose applied against the face of the core of a profile which is turned towards the soul of the other profile.
  • each spacer can be a trapezoidal plate, each of the two short sides of which is extended by an inclined return of 90 ° on said plate, said two short sides belonging to a plane perpendicular to the general direction of assembly and each return of the plate being made integral with the face of the core of a profile which is turned towards the core on the other profile.
  • Each of the struts of the aforementioned kind can advantageously emerge from the assembly of the two recessed Z-shaped profiles and extend beyond the plane formed by the first wings of the two flanges, respectively narrow and wide, which are not fitted.
  • the assembly then preferably comprises several spacers of the aforementioned kind, arranged at substantially regular intervals, said spacers emerging from said assembly by a height which increases regularly from one end to the other of this assembly.
  • the lower (or inner) bearing faces of the assembly formed by the first wings, respectively narrow and wide, of the soles, respectively narrow and wide, which are not nested are joined over at least part of their length by a plate which extends continuously from one support face lower than the other.
  • each of the assemblies meeting the aforementioned characteristics may comprise means, such as self-tapping screws, for ensuring the connection of the two Z-profiles at the level of the first wings, respectively narrow and wide, of the two interlocked flanges.
  • means for ensuring the connection of the two nested soles can advantageously be provided for, simultaneously, securing the assembly to a roof, a cladding or a floor.
  • (1) has been designated as a whole a roof supported by different purlins corresponding to the known types, successively used, namely a purl (2 ) with a straight cross-section at I, a purlin (3) with a straight cross-section at Z, and a purlin (4), also with a straight cross-section at Z, connected to the two adjacent purlins by liernes (5) arranged in a cross.
  • the purlins (2, 3) and (4) mentioned above are based on supports (6) arranged transversely to the direction of each failure, at substantially regular intervals of the order of a few meters, the supports (6) consequently belonging to a plane generally parallel to the plane of the roof (1).
  • FIG. 2 a purlin with a Z-shaped cross section has been shown, the flanges of which are parallel to one another and of different widths, the profile being therefore asymmetrical to allow interlocking of several elementary purlins abutted at the level of each of the supports (6).
  • each elementary breakdown (7) in Z comprises two longitudinal flanges joined by a core (8), said two flanges each being formed of a first wing which constitutes a return of the core (8) and of a second wing which constitutes a return of the first wing, said first two wings being of different widths and such that that of the first wing (9) the widest is slightly greater than the width of the first wing (10) narrower increased double the thickness of the purlin sheet.
  • the second wing (11) of the wide sole (12) is advantageously higher than the second wing (13) of the narrow sole (14), and their difference in height is even advantageously greater than the thickness of the sheet of the purlin (7) so that, when two identical purlins (7) are arranged head to tail and nested by their soles (12, 14) as shown in FIG. 2, each of the two second wings (11) of the purlins thus assembled extends beyond the second wing (13) which is attached to it. The nesting is thus better assured and more aesthetic.
  • the overlap length of two successive purlins is generally of the order of 20% of the length of each purlin elementary, hence an obvious loss of material while, at the same time, the mechanical characteristics of the beam, and in particular its characteristic of torsional stiffness, are not improved.
  • FIG. 3 shows the purlin (15) according to the invention, obtained by assembling by interlocking two elementary profiles (16) with a Z-shaped cross section, of the type of those identified by (7) in FIG. 2.
  • each elementary section (16) comprises two longitudinal flanges joined by a core (17), said two flanges each being formed of a first wing which constitutes a return of the core and of a second wing which constitutes a return of the first wing, said two first wings, respectively (18, 19), being parallel to each other and of different widths and such that that of the first wing (18) the widest is slightly greater than the width of the first wing (19) narrowest increased by double the l 'thickness of the sheet metal of the profile (16).
  • Each elementary Z section (16) is therefore asymmetrical in principle.
  • the constituent assembly of the purlin (16) according to the invention constituted by the meeting by interlocking by their soles of two identical elementary profiles (16) arranged head to tail, the narrow sole (21) of each profile then being disposed substantially in the plane of the wide sole (22) of the other profile, is then characterized in that the narrow sole (21) of the first profile fitted into the wide sole (22) of the second profile has the opposite orientation to that of said wide sole of the second profile, in that the wide sole (22) of the first profile and the narrow sole (21) of the second profile are also of opposite orientation and separated from each other by at least a distance equal to the width of a first narrow wing (19) and in that the two profiles thus assembled head to tail face each other continuously and constitute an assembly having substantially the shape of an ⁇ .
  • the soles respectively narrow (21) and wide (22), are parallel to each other, with the additional condition that the narrow sole (21) can be fit into the wide sole (22) of another asymmetrical profile of the same shape and the same dimensions, the core (17) of each elementary profile (16) can form, with the first wing, respectively (18, 19), of each of its two soles a dihedral whose angle can be either equal to 90 ° ( Figures 3 to 9 and Figure 11), or different from 90 ° ( Figure 10).
  • the profiled purlin (15) according to the invention also having excellent resistance to bending, it is not necessary to create continuity on supports. Also, in the most frequent case where to support the roof it is necessary to produce a very long beam, necessarily obtained by abutment of several elementary purlins, the different elementary purlins (15) abutted are in contact, or even more simply close to the contact , at the level of each support (6). There is therefore no longer any unnecessary loss of material as in the case of the known assembly shown in FIG. 2.
  • the assemblies of FIGS. 3 to 11 are completed by the additional arrangement of means, such as self-tapping screws shown diagrammatically by the axis line (23), which ensure the connection of the two Z-shaped profiles (16) at the level of the first wings. , respectively narrow (19) and wide (18), of the two upper flanges (21) and (22) fitted together.
  • these connecting means shown diagrammatically by (23) of the two nested soles are provided for, simultaneously, securing the assembly to the roof (1), or, depending on, to a cladding or a floor.
  • the cores (17) of the two sections (16) which constitute said assembly are joined from place to place over at least part of their height by spacers.
  • each spacer can be a profile (24) with a U-shaped cross section which extends perpendicular to the general direction (25) of the assembly, each wing (26) of this U being made integral with the face of the core of a profile which faces the soul of the other profile, that is to say that the wings (26 ) are made integral with the faces (27) internal to the assembly.
  • the spacers (24) are secured to the purlin (15) can be done by any known means, for example by bolting or welding. This joining will however most often be done by bolting because the Z profiles (16) are generally profiled from a sheet of galvanized steel.
  • each spacer (24) can extend until it comes into contact with the edge (28) of the second wing (29) of the narrow sole (21).
  • the spacer can emerge from the assembly at (30), its projecting part being used for purposes which will be described later.
  • the spacer (31) is a tube of quadrangular section which also extends perpendicular to the general direction (25) of the assembly, two opposite walls of this tube, respectively (32) and (33), being made integral with the cores (17) of the two Z-sections (16) assembled, each wall (32, 33) secured being for this purpose applied against the internal face (27) of the core of a profile which is turned towards the core of the other profile.
  • Each spacer (31) can extend at its upper part up to the edge (28), against which it is then applied before fastening by bolting, and, at its lower part, it can emerge from the assembly and overflow from the failure (15) as indicated by (34).
  • the spacer (37) is advantageously designed in the form of a trapezoidal plate (38) each of whose two short sides, respectively (39) and (40), is extended by a return, respectively (41) and (42), inclined 90 ° on said plate, the two short sides (39) and (40) belonging to a plane perpendicular to the general direction (25) of the assembly and each return, respectively (41, 42) of the plate (38) being made integral with the internal face (27) of the core (35) of a profile (36) which faces the core (35) of the other profile (36).
  • the lower (or inner) support faces, respectively (43, 44), formed by the first wings, respectively wide (18) and narrow (19), soles, respectively wide (22) and narrow (21), which are not fitted together are joined over at least part of their length by one or more plates (45) which, each, extend continuously from one side d 'lower support (43) to the other (44).
  • Each plate (45) is bolted into the flanges (21) and (22), as indicated by the axis lines (46).
  • the lower bearing face (43) is normally located below the lower bearing face (44), the distance separating these two faces (43) and (44) being equal to the thickness of the sheet metal constituting each profile.
  • the spacers (24, 31, 37) can also be used by their projecting parts, respectively (30, 34) and (48), to give a slight inclination to the roof (1).
  • each breakdown (15) is braced or else impaled on spacers whose overhanging part is d 'a height which increases regularly from left to right.
  • spacers whose overhanging part is d 'a height which increases regularly from left to right.

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  • Architecture (AREA)
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  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The present invention relates to an assembly, by interlocking, of two profiles (16) made from folded metal sheet and having a Z-shaped cross-section, each comprising two longitudinal flanges (21, 22) which are joined by a web (17), the said two flanges each being formed from a first foot (18, 19) which constitutes a return of the web and from a second foot (29) which constitutes a return of the first foot, the said two first feet (18, 19) of each Z-profile being parallel to each other and of different widths, such that the narrower flange (21) of a first Z-profile can fit into the wider flange (22) of a second Z-profile which is identical in cross-section to the said first profile. The said assembly, of the type constituted by the joining, by interlocking of their flanges, of two identical profiles (16, 36) having a Z-shaped cross-section which are disposed head to tail, the narrow flange (21) of each profile then being substantially disposed in the plane of the wide flange (22) of the other profile, is characterised in that the narrow flange (21) of the first profile fitted into the wide flange (22) of the second profile is of reverse orientation to that of the said wide flange of the second profile, in that the wide flange (22) of the first profile and the narrow flange (21) of the second profile are also of reverse orientation and are separated from each other by a distance at least equal to the width of a first narrow foot (19) and in that the two profiles thus assembled head to tail face each other continuously and constitute an assembly having substantially the shape of a OMEGA . Application especially to the production of a purlin (15) for the support of a roof (1). <IMAGE>

Description

La présente invention est relative à un assemblage de profilés en tôle métallique pliée à section droite en Z, notamment pour la réalisation d'une panne destinée à supporter un élément de toiture horizontal ou sensiblement horizontal, ou pour la réalisation d'une lisse destinée à supporter un élément de bardage vertical ou sensiblement vertical, ou encore pour la réalisation d'une pièce profilée constituant un support de plancher.The present invention relates to an assembly of sections of bent sheet metal with a straight cross-section in Z, in particular for the production of a purlin intended to support a horizontal or substantially horizontal roof element, or for the production of a heald intended for support a vertical or substantially vertical cladding element, or else for the production of a profiled part constituting a floor support.

Cet assemblage est réalisé par emboîtement de deux profilés à section en Z identiques et qui présentent chacun deux semelles parallèles entre elles et de largeurs différentes, formées au niveau des ailes latérales qui bordent l'âme centrale du Z.This assembly is carried out by interlocking two identical Z-section profiles, which each have two parallel flanges with one another and of different widths, formed at the level of the lateral wings which border the central core of the Z.

Les premières pannes, lisses ou autres pièces profilées destinées à supporter un élément de construction de grande surface ont été des profilés à section droite en I, dont la faiblesse mécanique commune est de présenter une trop grande souplesse en flexion.The first purlins, beams or other profiled parts intended to support a large-area construction element were profiles with a straight I-section, the common mechanical weakness of which is to have too much flexibility in bending.

Progressivement, et surtout lorsque les charges à supporter sont importantes, les architectes et entrepreneurs de bâtiment public ont substitué à ces profilés en I des profilés à section droite en Z, à fin d'augmenter la raideur en flexion et de réduire les phénomènes de torsion sous charge de gravité.Gradually, and especially when the loads to be supported are high, the architects and contractors of public buildings have replaced these I-sections with cross-sectional sections in Z, in order to increase the bending stiffness and reduce the torsional phenomena. under gravity load.

Tous ces profilés, qu'ils soient en I ou en Z, sont disposés d'une seule longueur, en reposant sur des appuis intermédiaires ou, en cas de trop grandes longueurs, formés par l'aboutement de plusieurs profilés élémentaires dont au moins les deux extrémités de chacun reposent sur des appuis.All these sections, whether I or Z, are arranged in a single length, resting on intermediate supports or, in the case of excessively long lengths, formed by the abutment of several elementary sections of which at least the two ends of each rest on supports.

En supportant la charge entre ces deux appuis, le profilé en Z travaille à la flexion, les forces auxquelles est soumis ledit profilé s'exerçant transversalement à sa longueur.By supporting the load between these two supports, the Z-section works on bending, the forces to which the said section is subjected acting transversely to its length.

En d'autres termes, sous l'action de la charge, le profilé en Z fléchit et se déforme et alors, à l'inverse de sa fibre neutre, généralement centrale, dont la longueur n'a pas varié, les fibres du profilé situées de son côté concave se sont raccourcies et sont donc soumises à une compression, tandis que celles situées de son côté convexe se sont allongées.In other words, under the action of the load, the Z-section bends and deforms and then, unlike its neutral fiber, generally central, the length of which has not varied, the section fibers located on its concave side are shortened and are therefore subject to compression, while those located on its convex side are elongated.

Comme dans toutes les pièces profilées soumises à une compression, la semelle comprimée du profilé en Z a tendance à se dérober dans un plan perpendiculaire à la contrainte. Ce changement de forme dans une direction différente de celle des forces de sollicitation, et qui ne peut se faire dans le plan de grande inertie du profilé, se traduit par un flambement latéral du profilé entraînant celui-ci en déversement. Il en est notamment ainsi pour les pannes qui supportent une toiture ou des éléments de toiture.As in all profiled parts subjected to compression, the compressed sole of the Z-profile tends to slip away in a plane perpendicular to the stress. This change in shape in a direction different from that of the stressing forces, and which cannot be done in the plane high inertia of the profile, results in a lateral buckling of the profile causing it to spill. This is particularly the case for purlins that support a roof or roof elements.

Pour éviter un tel déversement, soit encore pour donner davantage de raideur en torsion à cette panne profilée en Z, on sait qu'il existe deux techniques:

  • a) on crée des liens entre deux pannes voisines, au moyen de barres métalliques appelées liernes, disposées le plus souvent deux par deux en croisillon, ou
  • b) on encastre chaque panne dans l'élément de couverture à porter, au moyen de vis autotaraudeuses.
To avoid such a spill, or even to give more torsional stiffness to this Z-shaped failure, we know that there are two techniques:
  • a) links are created between two neighboring purlins, by means of metal bars called liernes, most often arranged in pairs in a cross, or
  • b) each breakdown is embedded in the covering element to be worn, by means of self-tapping screws.

La première des deux techniques précitées a pour inconvénient d'être très onéreuse, du fait des manipulations complémentaires qu'elle implique pour la pose des liernes, et la seconde technique, la plus employée, reste malgré tout insuffisante pour obtenir une stabilité absolue et éviter tout phénomène de déversement.The first of the two aforementioned techniques has the disadvantage of being very expensive, because of the additional manipulations that it involves for the laying of ivies, and the second technique, the most used, remains nevertheless insufficient to obtain absolute stability and avoid any spillage phenomenon.

D'une manière plus générale, on sait aussi que pour éviter le déversement d'une pièce profilée supportant une charge, on peut améliorer son inertie de torsion, c'est-à-dire sa capacité à résister à un moment de torsion, en agissant sur sa forme et en lui donnant une section aussi proche que possible de la section tubulaire. Il est en effet bien connu que c'est le tube qui présente la meilleure raideur propre. C'est donc selon une section voisine d'une section tubulaire que les pannes et les lisses devraient idéalement être conçues.More generally, we also know that to avoid the spillage of a profiled part carrying a load, we can improve its torsional inertia, that is to say its ability to withstand a torsional moment, by acting on its shape and giving it a section as close as possible to the tubular section. It is indeed well known that it is the tube which has the best own stiffness. It is therefore along a section close to a tubular section that the purlins and beams should ideally be designed.

Par ailleurs, les pannes et les lisses, mais plus particulièrement les pannes, sont des pièces profilées longues soumises également à une flexion, qui se traduit par une flèche dont la hauteur maximale se situe à mi-distance des deux appuis de chaque panne.Furthermore, purlins and stringers, but more particularly purlins, are long profiled parts also subjected to bending, which results in an arrow whose maximum height is located halfway between the two supports of each purlin.

On sait que, compte tenu des faibles charges que ces pannes et lisses ont à supporter (légèreté des couvertures, poussières et neige, vent, par exemple), la condition la plus contraignante que ces pannes et lisses ont à respecter est la limitation due à la flèche maximale imposée par les règlements et qui, sous les charges normales de service, est généralement de 1/200 de la portée.We know that, given the low loads that these purlins and beams have to bear (lightness of the covers, dust and snow, wind, for example), the most restrictive condition that these purlins and beams have to respect is the limitation due to the maximum deflection imposed by the regulations and which, under normal service loads, is generally 1/200 of the span.

Pour réduire la flèche d'une panne ou d'une lisse, les constructeurs utilisent deux moyens:

  • en fabriquant des profilés plus raides, c'est-à-dire des profilés de plus grandes hauteurs, et en ayant recours de préférence au profilage à froid de tôles minces (par exemple des profilés de 140 à 300 mm de hauteur, réalisés en tôle de 1,5 à 3 mm d'épaisseur),
  • en créant une continuité des profilés au niveau de chacun des appuis, soit par éclissage au moyen d'éclisses intérieures ou extérieures aux profilés à abouter lorsque ceux-ci sont d'une section autre que en Z, soit par emboîtement des semelles formées au niveau des ailes latérales lorsque les profilés à abouter sont à section en Z.
To reduce the deflection of a breakdown or a boom, manufacturers use two means:
  • by manufacturing stiffer profiles, that is to say profiles of greater heights, and preferably using cold profiling of thin sheets (for example profiles 140 to 300 mm high, made of sheet metal 1.5 to 3 mm thick),
  • by creating a continuity of the profiles at each of the supports, either by splicing by means of internal or external splices to the profiles to be abutted when these are of a section other than in Z, or by interlocking of the flanges formed at the level of the lateral wings when the profiles to be abutted are with Z section.

Pour permettre ce type d'emboîtement de deux profilés en Z aboutés, chacun desdits profilés en Z comprend deux semelles longitudinales réunies par une âme, lesdites deux semelles étant chacune formées d'une première aile qui constitue un retour de l'âme et d'une seconde aile qui constitue un retour de la première aile, lesdites deux premières ailes de chaque profilé en Z étant parallèles entre elles et de largeurs différentes et telles que celle de la première aile la plus large est légèrement supérieure à la largeur de la première aile la plus étroite augmentée du double de l'épaisseur de la tôle du profilé, de sorte que la semelle la plus étroite d'un premier profilé en Z puisse s'emboîter dans la semelle la plus large d'un second profilé en Z identique en section audit premier profilé.To allow this type of interlocking of two butted Z profiles, each of said Z profiles comprises two longitudinal flanges joined by a core, said two flanges each being formed of a first wing which constitutes a return of the core and a second wing which constitutes a return of the first wing, said first two wings of each Z-section being parallel to each other and of different widths and such that that of the widest first wing is slightly greater than the width of the first wing the narrowest increased by twice the thickness of the sheet metal of the profile, so that the narrowest flange of a first Z-profile can fit into the widest flange of a second identical Z-profile in first section audit section.

En disposant tête-bêche deux profilés en Z du type précité, et en les emboîtant par leurs deux semelles simultanément, avec accolement de leurs âmes, on peut créer une continuité de tels profilés pour constituer une poutre de grande longueur, lesdits profilés étant alors emboîtés au niveau de chaque appui sur une longueur d'environ 20% de la longueur de chaque profilé. Du fait de l'emboîtement de chaque semelle la moins large dans la semelle la plus large du profilé voisin, il y a formation sur chaque face, respectivement inférieure et supérieure, de la poutre constituée des profilés en Z ainsi emboîtés une alternance de semelles larges et de semelles étroites.By arranging head to tail two Z-shaped profiles of the aforementioned type, and by fitting them together with their two flanges simultaneously, with their souls joined together, it is possible to create a continuity of such profiles to constitute a very long beam, said profiles then being nested at each support over a length of approximately 20% of the length of each profile. Due to the nesting of each narrower flange in the wider flange of the neighboring profile, there is formation on each face, respectively lower and upper, of the beam consisting of the Z profiles thus nested alternating wide flanges and narrow soles.

Ce type d'emboîtement, décrit par exemple dans le brevet GB-A-1.534.297, présente toutefois des inconvénients qui sont de deux ordres:

  • la résistance de la poutre au déversement n'est pas améliorée, puisque la forme de la poutre n'est pas modifiée fondamentalement, et l'excès de matière, de l'ordre de 20%, du fait du recouvrement des profilés en Z emboîtés l'un dans l'autre au niveau de chaque appui, n'est donc d'aucune incidence sensible à l'égard de la résistance au déversement de la poutre ainsi constituée.
This type of nesting, described for example in patent GB-A-1,534,297, however has drawbacks which are of two kinds:
  • the resistance of the beam to spillage is not improved, since the shape of the beam is not fundamentally modified, and the excess material, of the order of 20%, due to the overlapping of the nested Z-profiles one inside the other at each support, is therefore of no appreciable effect with regard to the spill resistance of the beam thus formed.

La présente invention a pour but de remédier aux inconvénients précités, et à cet effet elle propose un autre type d'assemblage de profilés en Z pour la réalisation d'une panne ou d'une lisse, assemblage qui, du fait de sa forme, est raide en torsion, donc d'une excellente résistance au déversement.The aim of the present invention is to remedy the aforementioned drawbacks, and for this purpose it proposes another type of assembly of Z-profiles for the production of a purlin or a heddle, assembly which, due to its shape, is stiff in torsion and therefore has excellent spill resistance.

La présente invention a donc pour premier objet un assemblage de profilés en tôle métallique pliée à section droite en Z, notamment pour la réalisation d'une panne, d'une lisse ou d'un support de plancher, chacun desdits profilés en Z étant du type comprenant deux semelles longitudinales réunies par une âme, lesdites deux semelles étant chacune formées d'une première aile qui constitue un retour de l'âme et d'une seconde aile qui constitue un retour de la première aile, lesdites deux premières ailes de chaque profilé en Z étant parallèles entre elles et de largeurs différentes et telles que celle de la première aile la plus large est légèrement supérieure à la largeur de la première aile la plus étroite augmentée du double de l'épaisseur de la tôle du profilé, de sorte que la semelle la plus étroite d'un premier profilé en Z puisse s'emboîter dans la semelle la plus large d'un second profilé en Z identique en section audit premier profilé, ledit assemblage étant du genre constitué par la réunion par emboîtement de leurs semelles de deux profilés à section en Z identiques disposés tête-bêche, la semelle étroite de chaque profilé étant alors disposée sensiblement dans le plan de la semelle large de l'autre profilé, et étant caractérisé en ce que la semelle étroite (21) du premier profilé emboîtée dans la semelle large (22) du second profilé est d'orientation inverse de celle de ladite semelle large du second profilé, en ce que la semelle large (22) du premier profilé et la semelle étroite (21) du second profilé sont également d'orientation inverse et séparées l'une de l'autre d'une distance au moins égale à la largeur d'une première aile étroite (19) et en ce que les deux profilés ainsi assemblés tête-bêche se font face continûment et constituent un assemblage ayant sensiblement la forme d'un Ω. Cette forme en Ω, pour être très proche d'une forme tubulaire, est la garantie d'une excellente raideur en torsion et par suite d'une excellente résistance au déversement.The present invention therefore has for first object an assembly of sheet metal profiles folded with a straight cross section in Z, in particular for the production of a purlin, a stringer or a floor support, each of said Z profiles being of type comprising two longitudinal flanges joined by a core, said two flanges each being formed of a first wing which constitutes a return of the core and of a second wing which constitutes a return of the first wing, said first two wings of each Z-section being parallel to each other and of different widths and such as that of the widest first wing is slightly greater than the width of the first narrowest wing increased by twice the thickness of the sheet metal of the profile, so that the narrowest flange of a first Z-profile can fit into the most flange wide of a second identical Z-section in section to said first profile, said assembly being of the kind constituted by the joining by interlocking of their flanges of two identical Z-section profiles arranged head to tail, the narrow sole of each profile then being arranged substantially in the plane of the wide sole of the other profile, and being characterized in that the narrow sole (21) of the first profile fitted into the lar sole ge (22) of the second profile is in reverse orientation to that of said wide sole of the second profile, in that the wide sole (22) of the first profile and the narrow sole (21) of the second profile are also of reverse orientation and separated from each other by a distance at least equal to the width of a first narrow wing (19) and in that the two profiles thus assembled head to tail face each other continuously and constitute an assembly having substantially the shape of an Ω. This Ω shape, to be very close to a tubular shape, is the guarantee of excellent torsional stiffness and therefore excellent resistance to spillage.

Dans une première variante de réalisation, l'âme de chaque profilé en Z de l'assemblage forme avec la première aile de chacune de ses deux semelles un dièdre dont l'angle est égal à 90°.In a first alternative embodiment, the core of each Z-shaped section of the assembly forms with the first wing of each of its two flanges a dihedral whose angle is equal to 90 °.

Dans une seconde variante de réalisation, l'âme de chaque profilé en Z de l'assemblage forme avec la première aile de chacune de ses deux semelles un dièdre dont l'angle est différent de 90°.In a second alternative embodiment, the core of each Z-shaped section of the assembly forms with the first wing of each of its two flanges a dihedral whose angle is different from 90 °.

Avantageusement, les âmes des deux profilés en Z qui constituent l'assemblage selon l'invention peuvent être réunies sur au moins une partie de leur hauteur par des entretoises.Advantageously, the webs of the two Z-shaped sections which constitute the assembly according to the invention can be joined over at least part of their height by spacers.

Dans le premier cas où l'âme de chaque profilé en Z forme avec ses premières ailes un dièdre dont l'angle est égal à 90°, chaque entretoise peut être soit un profilé à section droite en U qui s'étend perpendiculairement à la direction générale de l'assemblage, chaque aile de ce U étant rendue solidaire de la face de l'âme d'un profilé qui est tournée vers l'âme de l'autre profilé, soit un tube de section quadrangulaire qui s'étend perpendiculairement à la direction générale de l'assemblage, deux parois opposées de ce tube étant rendues solidaires des âmes des deux profilés en Z assemblés, chaque paroi solidarisée étant à cette fin appliquée contre la face de l'âme d'un profilé qui est tournée vers l'âme de l'autre profilé.In the first case where the core of each Z-section forms with its first wings a dihedral whose angle is equal to 90 °, each spacer can be either a section with a U-shaped cross section which extends perpendicular to the direction general of the assembly, each wing of this U being made integral with the face of the core of a profile which is turned towards the core of the other profile, ie a tube of quadrangular section which extends perpendicularly to the general direction of assembly, two opposite walls of this tube being made integral with the webs of the two Z-profiles assembled, each joined wall being for this purpose applied against the face of the core of a profile which is turned towards the soul of the other profile.

Dans le second cas où l'âme de chaque profilé en Z forme avec ses premières ailes un dièdre dont l'angle est différent de 90°, chaque entretoise peut être une plaque trapézoïdale dont chacun des deux petits côtés est prolongé par un retour incliné de 90° sur ladite plaque, lesdits deux petits côtés appartenant à un plan perpendiculaire à la direction générale de l'assemblage et chaque retour de la plaque étant rendu solidaire de la face de l'âme d'un profilé qui est tournée vers l'âme de l'autre profilé.In the second case where the core of each Z-section forms with its first wings a dihedral whose angle is different from 90 °, each spacer can be a trapezoidal plate, each of the two short sides of which is extended by an inclined return of 90 ° on said plate, said two short sides belonging to a plane perpendicular to the general direction of assembly and each return of the plate being made integral with the face of the core of a profile which is turned towards the core on the other profile.

Chacune des entretoises du genre précité peut avantageusement émerger de l'assemblage des deux profilés en Z encastrés et s'étendre au-delà du plan formé par les premières ailes des deux semelles, respectivement étroite et large, qui ne sont pas emboîtées. L'assemblage comporte alors de préférence plusieurs entretoises du genre précité, disposées à intervalles sensiblement réguliers, lesdites entretoises émergeant dudit assemblage d'une hauteur qui augmente régulièrement d'une extrémité à l'autre de cet assemblage.Each of the struts of the aforementioned kind can advantageously emerge from the assembly of the two recessed Z-shaped profiles and extend beyond the plane formed by the first wings of the two flanges, respectively narrow and wide, which are not fitted. The assembly then preferably comprises several spacers of the aforementioned kind, arranged at substantially regular intervals, said spacers emerging from said assembly by a height which increases regularly from one end to the other of this assembly.

Selon une autre construction, techniquement équivalente aux entretoises, les faces d'appui inférieur (ou intérieur) de l'assemblage, formées par les premières ailes, respectivement étroite et large, des semelles, respectivement étroite et large, qui ne sont pas emboîtées sont réunies sur au moins une partie de leur longueur par une plaque qui s'étend continûment d'une face d'appui inférieur à l'autre.According to another construction, technically equivalent to the spacers, the lower (or inner) bearing faces of the assembly, formed by the first wings, respectively narrow and wide, of the soles, respectively narrow and wide, which are not nested are joined over at least part of their length by a plate which extends continuously from one support face lower than the other.

Selon une autre application privilégiée, chacun des assemblages répondant aux caractéristiques précitées peut comporter des moyens, telles des vis autotaraudeuses, pour assurer la liaison des deux profilés en Z au niveau des premières ailes, respectivement étroite et large, des deux semelles emboîtées. Ces moyens assurant la liaison des deux semelles emboîtées peuvent avantageusement être prévus pour, simultanément, assurer la solidarisation de l'assemblage à une toiture, à un bardage ou à un plancher.According to another preferred application, each of the assemblies meeting the aforementioned characteristics may comprise means, such as self-tapping screws, for ensuring the connection of the two Z-profiles at the level of the first wings, respectively narrow and wide, of the two interlocked flanges. These means ensuring the connection of the two nested soles can advantageously be provided for, simultaneously, securing the assembly to a roof, a cladding or a floor.

On comprendra bien les avantages de l'invention, ainsi que certaines autres de ses caractéristiques, à la lecture du complément de description qui va suivre et en référence aux dessins annexés qui font partie intégrante de cette description, lesdits dessins représentant notamment, à titre d'exemples purement illustratifs et non limitatifs, divers modes de réalisation préférés de ladite invention.The advantages of the invention, as well as certain other of its characteristics, will be clearly understood on reading the additional description which follows and with reference to the appended drawings which form an integral part of this description, said drawings representing in particular, by way of purely illustrative and nonlimiting examples, various preferred embodiments of said invention.

Sur ces dessins:

  • la figure 1 représente schématiquement, en coupes transversales, des pannes profilées classiques, respectivement à section droite en I, en Z, et en Z réunies par des liernes, qui supportent une toiture de bâtiment,
  • la figure 2 représente en perspective un assemblage de deux pannes profilées à section droite en Z encastrées par emboîtement en bout l'une de l'autre, avec accolement de leurs âmes, un tel assemblage de pannes en Z, qui constitue la continuité sur appuis évoquée précédemment, étant le seul mode d'association par encastrement de deux profilés en Z connu à ce jour,
  • la figure 3 représente en coupe transversale l'assemblage selon l'invention,
  • les figures 4 et 5 représentent, respectivement en coupe transversale et en vue de dessous, l'assemblage de la figure 3 complété d'entretoises à section droite en U,
  • les figures 6 et 7 représentent, respectivement en coupe transversale et en vue de dessous, l'assemblage de la figure 3 complété d'entretoises formées chacune par un tube de section quadrangulaire,
  • les figures 8 et 9 représentent, respectivement en coupe transversale et en vue de dessous, l'assemblage de la figure 3 doté de plaques qui assurent la réunion de ses faces d'appui inférieur formées par les premières ailes des semelles qui ne sont pas emboîtées,
  • la figure 10 représente, en coupe transversale, un autre assemblage selon l'invention dans lequel l'âme de chaque profilé en Z forme avec la première aile de chacune de ses deux semelles un dièdre dont l'angle est différent de 90°, cet assemblage étant complété d'entretoises constituées par des plaques trapézoïdales, et
  • la figure 11 représente schématiquement, en coupe transversale, un ensemble de plusieurs pannes, ou cours de pannes, assemblées conformément à l'invention et dotées chacune d'entretoises de hauteurs différentes grâce auxquelles on peut supporter une toiture légèrement inclinée sur l'horizontale.
In these drawings:
  • FIG. 1 schematically represents, in transverse sections, conventional profiled purlins, respectively with cross section in I, in Z, and in Z joined by liernes, which support a building roof,
  • FIG. 2 shows in perspective an assembly of two profiled purlins with a straight Z-shaped section embedded by interlocking at the end one from the other, with their souls joined together, such an assembly of Z purlins, which constitutes the continuity on supports mentioned above, being the only mode of association by embedding of two Z profiles known to date,
  • FIG. 3 represents in cross section the assembly according to the invention,
  • FIGS. 4 and 5 represent, respectively in cross section and in bottom view, the assembly of FIG. 3 completed with spacers with a U-shaped cross section,
  • FIGS. 6 and 7 represent, respectively in cross section and in bottom view, the assembly of FIG. 3 completed with spacers each formed by a tube of quadrangular section,
  • Figures 8 and 9 show, respectively in cross section and in bottom view, the assembly of Figure 3 provided with plates which ensure the meeting of its lower bearing faces formed by the first wings of the soles which are not fitted ,
  • FIG. 10 shows, in cross section, another assembly according to the invention in which the core of each Z-shaped section forms with the first wing of each of its two flanges a dihedral whose angle is different from 90 °, this assembly being completed with spacers constituted by trapezoidal plates, and
  • FIG. 11 schematically represents, in cross section, a set of several purlins, or courses of purlins, assembled in accordance with the invention and each provided with spacers of different heights thanks to which a roof can be supported slightly inclined on the horizontal.

Dans toute la description qui va suivre, l'assemblage réalisé conformément à l'invention va être définie dans son application en tant que support de toiture, chaque assemblage de profilés étant alors défini par le terme de "panne".In all the description which follows, the assembly produced in accordance with the invention will be defined in its application as a roofing support, each assembly of profiles then being defined by the term "breakdown".

Il est bien clair toutefois que la présente invention s'applique également sans modification à deux autres applications, celle consistant à supporter un bardage ou paroi verticale et celle consistant à supporter un plancher, l'assemblage dans le premier des deux cas précités se définissant alors par le terme de "lisse".It is however clear that the present invention also applies without modification to two other applications, that of supporting a vertical cladding or wall and that of supporting a floor, the assembly in the first of the two aforementioned cases being defined then by the term "smooth".

En se référant aux dessins, et en premier lieu à la figure 1, on voit que l'on a désigné par (1) dans son ensemble une toiture soutenue par différentes pannes correspondant aux types connus, successivement utilisés, à savoir une panne (2) à section droite en I, une panne (3) à section droite en Z, et une panne (4), également à section droite en Z, reliée aux deux pannes voisines par des liernes (5) disposées en croisillon.Referring to the drawings, and first of all in FIG. 1, it can be seen that (1) has been designated as a whole a roof supported by different purlins corresponding to the known types, successively used, namely a purl (2 ) with a straight cross-section at I, a purlin (3) with a straight cross-section at Z, and a purlin (4), also with a straight cross-section at Z, connected to the two adjacent purlins by liernes (5) arranged in a cross.

Les pannes (2, 3) et (4) précitées reposent sur des appuis (6) disposés transversalement à la direction de chaque panne, à intervalles sensiblement réguliers de l'ordre de quelques mètres, les appuis (6) appartenant en conséquence à un plan généralement parallèle au plan de la toiture (1).The purlins (2, 3) and (4) mentioned above are based on supports (6) arranged transversely to the direction of each failure, at substantially regular intervals of the order of a few meters, the supports (6) consequently belonging to a plane generally parallel to the plane of the roof (1).

A l'aide de cette figure 1, on comprend la raison qui fait que l'on préfère utiliser une panne (3) en Z plutôt qu'une panne (2) en I, la composante verticale (F) de la charge appliquée auxdites pannes qui passe par la ligne longitudinale médiane, respectivement (2a) et (3a), de la semelle supérieure (ou extérieure), respectivement (2b) et (3b), passant aussi par le centre de gravité (G) de la panne (3) en Z, ou à proximité de ce centre de gravité, et en étant nécessairement fort éloignée lorsqu'elle s'applique sur la panne (2) en I.Using this figure 1, we understand the reason why we prefer to use a purlin (3) in Z rather than a purlin (2) in I, the vertical component (F) of the load applied to said purlins passing through the median longitudinal line, respectively (2a) and (3a), of the upper (or outer) sole, respectively (2b) and (3b), also passing through the center of gravity (G) of the purlin ( 3) in Z, or close to this center of gravity, and being necessarily far away when it applies to the fault (2) in I.

En se référant maintenant à la figure 2, il a été représenté une panne à section droite en Z dont les semelles sont parallèles entre elles et de largeurs différentes, le profil étant de ce fait dissymétrique pour permettre un emboîtement de plusieurs pannes élémentaires aboutées au niveau de chacun des appuis (6). A cette fin, chaque panne élémentaire (7) en Z comprend deux semelles longitudinales réunies par une âme (8), lesdites deux semelles étant chacune formées d'une première aile qui constitue un retour de l'âme (8) et d'une seconde aile qui constitue un retour de la première aile, lesdites deux premières ailes étant de largeurs différentes et telles que celle de la première aile (9) la plus large est légèrement supérieure à la largeur de la première aile (10) la plus étroite augmentée du double de l'épaisseur de la tôle de la panne. La seconde aile (11) de la semelle large (12) est avantageusement plus haute que la seconde aile (13) de la semelle étroite (14), et leur différence de hauteur est même avantageusement supérieure à l'épaisseur de la tôle de la panne (7) de façon que, lorsque deux pannes (7) identiques sont disposées tête-bêche et emboîtées par leurs semelles (12, 14) ainsi qu'il est représenté à la figure 2, chacune des deux secondes ailes (11) des pannes ainsi assemblées déborde la seconde aile (13) qui lui est accolée. L'emboîtement est ainsi mieux assuré et plus esthétique.Referring now to FIG. 2, a purlin with a Z-shaped cross section has been shown, the flanges of which are parallel to one another and of different widths, the profile being therefore asymmetrical to allow interlocking of several elementary purlins abutted at the level of each of the supports (6). To this end, each elementary breakdown (7) in Z comprises two longitudinal flanges joined by a core (8), said two flanges each being formed of a first wing which constitutes a return of the core (8) and of a second wing which constitutes a return of the first wing, said first two wings being of different widths and such that that of the first wing (9) the widest is slightly greater than the width of the first wing (10) narrower increased double the thickness of the purlin sheet. The second wing (11) of the wide sole (12) is advantageously higher than the second wing (13) of the narrow sole (14), and their difference in height is even advantageously greater than the thickness of the sheet of the purlin (7) so that, when two identical purlins (7) are arranged head to tail and nested by their soles (12, 14) as shown in FIG. 2, each of the two second wings (11) of the purlins thus assembled extends beyond the second wing (13) which is attached to it. The nesting is thus better assured and more aesthetic.

Dans la construction de la poutre en Z formée de plusieurs pannes élémentaires (7) aboutées ainsi qu'il vient d'être décrit, la longueur de recouvrement de deux pannes successives est généralement de l'ordre de 20% de la longueur de chaque panne élémentaire, d'où une perte évidente de matière alors que, dans le même temps, les caractéristiques mécaniques de la poutre, et notamment sa caractéristique de raideur en torsion, ne sont pas améliorées.In the construction of the Z-beam formed by several elementary purlins (7) abutted as just described, the overlap length of two successive purlins is generally of the order of 20% of the length of each purlin elementary, hence an obvious loss of material while, at the same time, the mechanical characteristics of the beam, and in particular its characteristic of torsional stiffness, are not improved.

Il a été représenté à la figure 3 la panne (15) selon l'invention, obtenue par assemblage par emboîtement de deux profilés élémentaires (16) à section droite en Z, du type de ceux repérés par (7) sur la figure 2.FIG. 3 shows the purlin (15) according to the invention, obtained by assembling by interlocking two elementary profiles (16) with a Z-shaped cross section, of the type of those identified by (7) in FIG. 2.

Autrement dit, chaque profilé élémentaire (16) comprend deux semelles longitudinales réunies par une âme (17), lesdites deux semelles étant chacune formées d'une première aile qui constitue un retour de l'âme et d'une seconde aile qui constitue un retour de la première aile, lesdites deux premières ailes, respectivement (18, 19), étant parallèles entre elles et de largeurs différentes et telles que celle de la première aile (18) la plus large est légèrement supérieure à la largeur de la première aile (19) la plus étroite augmentée du double de l'épaisseur de la tôle du profilé (16). Chaque profilé élémentaire en Z (16) est donc par principe dissymétrique.In other words, each elementary section (16) comprises two longitudinal flanges joined by a core (17), said two flanges each being formed of a first wing which constitutes a return of the core and of a second wing which constitutes a return of the first wing, said two first wings, respectively (18, 19), being parallel to each other and of different widths and such that that of the first wing (18) the widest is slightly greater than the width of the first wing (19) narrowest increased by double the l 'thickness of the sheet metal of the profile (16). Each elementary Z section (16) is therefore asymmetrical in principle.

L'assemblage constitutif de la panne (16) selon l'invention, constitué par la réunion par emboîtement par leurs semelles de deux profilés élémentaires identiques (16) disposés tête-bêche, la semelle étroite (21) de chaque profilé étant alors disposée sensiblement dans le plan de la semelle large (22) de l'autre profilé, est alors caractérisé en ce que la semelle étroite (21) du premier profilé emboîtée dans la semelle large (22) du second profilé est d'orientation inverse de celle de ladite semelle large du second profilé, en ce que la semelle large (22) du premier profilé et la semelle étroite (21) du second profilé sont également d'orientation inverse et séparées l'une de l'autre d'une distance au moins égale à la largeur d'une première aile étroite (19) et en ce que les deux profilés ainsi assemblés tête-bêche se font face continûment et constituent un assemblage ayant sensiblement la forme d'un Ω.The constituent assembly of the purlin (16) according to the invention, constituted by the meeting by interlocking by their soles of two identical elementary profiles (16) arranged head to tail, the narrow sole (21) of each profile then being disposed substantially in the plane of the wide sole (22) of the other profile, is then characterized in that the narrow sole (21) of the first profile fitted into the wide sole (22) of the second profile has the opposite orientation to that of said wide sole of the second profile, in that the wide sole (22) of the first profile and the narrow sole (21) of the second profile are also of opposite orientation and separated from each other by at least a distance equal to the width of a first narrow wing (19) and in that the two profiles thus assembled head to tail face each other continuously and constitute an assembly having substantially the shape of an Ω.

Cette section droite en Ω est extrêmement proche d'une section tubulaire. La raideur de la panne (15) est donc excellente, et en tout état de cause nettement supérieure à la raideur de la poutre (7), et de ce fait la panne (15) présente une exceptionnelle résistance au déversement.This straight section in Ω is extremely close to a tubular section. The stiffness of the purlin (15) is therefore excellent, and in any event significantly greater than the stiffness of the beam (7), and therefore the purlin (15) has exceptional resistance to spillage.

Puisque, pour constituer la panne (15) selon l'invention, il suffit que les semelles, respectivement étroite (21) et large (22), soient parallèles entre elles, avec la condition supplémentaire que la semelle étroite (21) puisse s'emboîter dans la semelle large (22) d'un autre profilé dissymétrique de même forme et de mêmes dimensions, l'âme (17) de chaque profilé élémentaire (16) peut former avec la première aile, respectivement (18, 19), de chacune de ses deux semelles un dièdre dont l'angle peut être soit égal à 90° (figures 3 à 9 et figure 11), soit différent de 90° (figure 10).Since, to constitute the purlin (15) according to the invention, it suffices that the soles, respectively narrow (21) and wide (22), are parallel to each other, with the additional condition that the narrow sole (21) can be fit into the wide sole (22) of another asymmetrical profile of the same shape and the same dimensions, the core (17) of each elementary profile (16) can form, with the first wing, respectively (18, 19), of each of its two soles a dihedral whose angle can be either equal to 90 ° (Figures 3 to 9 and Figure 11), or different from 90 ° (Figure 10).

La panne profilée (15) selon l'invention présentant également une excellente résistance à la flexion, il n'est pas nécessaire de créer une continuité sur appuis. Aussi, dans le cas le plus fréquent où pour soutenir la toiture il faut réaliser une poutre de très grande longueur, obtenue nécessairement par aboutement de plusieurs pannes élémentaires, les différentes pannes élémentaires (15) aboutées sont en contact, voire plus simplement proches du contact, au niveau de chaque appui (6). Il n'y a donc plus de pertes inutiles de matière comme dans le cas de l'assemblage connu représenté à la figure 2.The profiled purlin (15) according to the invention also having excellent resistance to bending, it is not necessary to create continuity on supports. Also, in the most frequent case where to support the roof it is necessary to produce a very long beam, necessarily obtained by abutment of several elementary purlins, the different elementary purlins (15) abutted are in contact, or even more simply close to the contact , at the level of each support (6). There is therefore no longer any unnecessary loss of material as in the case of the known assembly shown in FIG. 2.

Avantageusement, les assemblages des figures 3 à 11 sont parachevés par la disposition complémentaire de moyens, telles des vis autotaraudeuses schématisées par le trait d'axe (23), qui assurent la liaison des deux profilés en Z (16) au niveau des premières ailes, respectivement étroite (19) et large (18), des deux semelles supérieures (21) et (22) emboîtées. De préférence, ces moyens de liaison schématisés par (23) des deux semelles emboîtées sont prévus pour, simultanément, assurer la solidarisation de l'assemblage à la toiture (1), ou, selon, à un bardage ou à un plancher.Advantageously, the assemblies of FIGS. 3 to 11 are completed by the additional arrangement of means, such as self-tapping screws shown diagrammatically by the axis line (23), which ensure the connection of the two Z-shaped profiles (16) at the level of the first wings. , respectively narrow (19) and wide (18), of the two upper flanges (21) and (22) fitted together. Preferably, these connecting means shown diagrammatically by (23) of the two nested soles are provided for, simultaneously, securing the assembly to the roof (1), or, depending on, to a cladding or a floor.

Toujours dans le même souci d'améliorer l'assemblage, les âmes (17) des deux profilés (16) qui constituent ledit assemblage sont réunies de place en place sur au moins une partie de leur hauteur par des entretoises.Still with the same concern of improving the assembly, the cores (17) of the two sections (16) which constitute said assembly are joined from place to place over at least part of their height by spacers.

Comme indiqué aux figures 4 et 5, où les âmes (17) des profilés (16) sont parallèles, chaque entretoise peut être un profilé (24) à section droite en U qui s'étend perpendiculairement à la direction générale (25) de l'assemblage, chaque aile (26) de ce U étant rendue solidaire de la face de l'âme d'un profilé qui est tournée vers l'âme de l'autre profilé, c'est-à-dire que les ailes (26) sont rendues solidaires des faces (27) internes à l'assemblage.As shown in Figures 4 and 5, where the webs (17) of the profiles (16) are parallel, each spacer can be a profile (24) with a U-shaped cross section which extends perpendicular to the general direction (25) of the assembly, each wing (26) of this U being made integral with the face of the core of a profile which faces the soul of the other profile, that is to say that the wings (26 ) are made integral with the faces (27) internal to the assembly.

La solidarisation des entretoises (24) à la panne (15) peut se faire par tous moyens connus, par exemple par boulonnages ou par soudures. Cette solidarisation se fera toutefois le plus souvent par boulonnages car les profils en Z (16) sont généralement profilés à partir d'une tôle d'acier galvanisé.The spacers (24) are secured to the purlin (15) can be done by any known means, for example by bolting or welding. This joining will however most often be done by bolting because the Z profiles (16) are generally profiled from a sheet of galvanized steel.

A sa partie supérieure, chaque entretoise (24) peut s'étendre jusqu'à venir au contact du chant (28) de la seconde aile (29) de la semelle étroite (21).At its upper part, each spacer (24) can extend until it comes into contact with the edge (28) of the second wing (29) of the narrow sole (21).

A sa partie inférieure, l'entretoise peut émerger de l'assemblage en (30), sa partie débordante étant utilisée à des fins qui seront décrites ultérieurement.At its lower part, the spacer can emerge from the assembly at (30), its projecting part being used for purposes which will be described later.

Dans la variante de construction représentée aux figures 6 et 7, l'entretoise (31) est un tube de section quadrangulaire qui s'étend également perpendiculairement à la direction générale (25) de l'assemblage, deux parois opposées de ce tube, respectivement (32) et (33), étant rendues solidaires des âmes (17) des deux profilés en Z (16) assemblés, chaque paroi (32, 33) solidarisée étant à cette fin appliquée contre la face interne (27) de l'âme d'un profilé qui est tournée vers l'âme de l'autre profilé.In the construction variant shown in FIGS. 6 and 7, the spacer (31) is a tube of quadrangular section which also extends perpendicular to the general direction (25) of the assembly, two opposite walls of this tube, respectively (32) and (33), being made integral with the cores (17) of the two Z-sections (16) assembled, each wall (32, 33) secured being for this purpose applied against the internal face (27) of the core of a profile which is turned towards the core of the other profile.

Chaque entretoise (31) peut s'étendre à sa partie supérieure jusqu'au chant (28), contre lequel elle est alors appliquée avant solidarisation par boulonnages, et, à sa partie inférieure, elle peut émerger de l'assemblage et déborder de la panne (15) comme il est indiqué par (34).Each spacer (31) can extend at its upper part up to the edge (28), against which it is then applied before fastening by bolting, and, at its lower part, it can emerge from the assembly and overflow from the failure (15) as indicated by (34).

Dans la construction représentée à la figure 10, dans laquelle l'âme (35) de chaque profilé en Z (36) forme avec la première aile de chacune de ses deux semelles un dièdre dont l'angle est supérieur à 90°, l'entretoise (37) est avantageusement conçue sous la forme d'une plaque trapézoïdale (38) dont chacun des deux petits côtés, respectivement (39) et (40), est prolongé par un retour, respectivement (41) et (42), incliné de 90° sur ladite plaque, les deux petits côtés (39) et (40) appartenant à un plan perpendiculaire à la direction générale (25) de l'assemblage et chaque retour, respectivement (41, 42) de la plaque (38) étant rendu solidaire de la face interne (27) de l'âme (35) d'un profilé (36) qui est tournée vers l'âme (35) de l'autre profilé (36).In the construction shown in FIG. 10, in which the core (35) of each Z-shaped section (36) forms with the first wing of each of its two flanges a dihedral whose angle is greater than 90 °, the spacer (37) is advantageously designed in the form of a trapezoidal plate (38) each of whose two short sides, respectively (39) and (40), is extended by a return, respectively (41) and (42), inclined 90 ° on said plate, the two short sides (39) and (40) belonging to a plane perpendicular to the general direction (25) of the assembly and each return, respectively (41, 42) of the plate (38) being made integral with the internal face (27) of the core (35) of a profile (36) which faces the core (35) of the other profile (36).

Selon encore une autre construction d'entretoise représentée aux figures 8 et 9, les faces d'appui inférieur (ou intérieur), respectivement (43, 44), formées par les premières ailes, respectivement large (18) et étroite (19), des semelles, respectivement large (22) et étroite (21), qui ne sont pas emboîtées sont réunies sur au moins une partie de leur longueur par une ou plusieurs plaques (45) qui, chacune, s'étendent continûment d'une face d'appui inférieur (43) à l'autre (44). Chaque plaque (45) est boulonnée dans les semelles (21) et (22), comme indiqué par les traits d'axe (46).According to yet another spacer construction shown in FIGS. 8 and 9, the lower (or inner) support faces, respectively (43, 44), formed by the first wings, respectively wide (18) and narrow (19), soles, respectively wide (22) and narrow (21), which are not fitted together are joined over at least part of their length by one or more plates (45) which, each, extend continuously from one side d 'lower support (43) to the other (44). Each plate (45) is bolted into the flanges (21) and (22), as indicated by the axis lines (46).

Dans la mesure où les profils emboîtés (16) (ou 36) sont de sections identiques, la face d'appui inférieur (43) est située normalement en dessous de la face d'appui inférieur (44), la distance séparant ces deux faces (43) et (44) étant égale à l'épaisseur de la tôle constitutive de chaque profilé. Au niveau de chaque appui (6), on peut donc avantageusement disposer une cale (47) sous la face d'appui (44), de façon que les deux semelles inférieures (21) et (22) de la panne (15) soient alors exactement de même niveau.Insofar as the nested profiles (16) (or 36) are of identical sections, the lower bearing face (43) is normally located below the lower bearing face (44), the distance separating these two faces (43) and (44) being equal to the thickness of the sheet metal constituting each profile. At each support (6), it is therefore advantageous to have a shim (47) under the support face (44), so that the two lower flanges (21) and (22) of the purlin (15) are then exactly the same level.

Les entretoises (24, 31, 37) peuvent être également utilisées par leurs parties en débord, respectivement (30, 34) et (48), pour donner une légère inclinaison à la toiture (1).The spacers (24, 31, 37) can also be used by their projecting parts, respectively (30, 34) and (48), to give a slight inclination to the roof (1).

Ainsi, en prenant pour illustration le cours de pannes (15) représenté à la figure 11, il suffit que, de la gauche vers la droite, chaque panne (15) soit entretoisée ou encore empalée sur des entretoises dont la partie en débord est d'une hauteur qui augmente régulièrement de la gauche vers la droite. Plutôt que d'appliquer les extrémités basses des entretoises (30, 34, 48) sur les appuis (6), on peut aussi utiliser des cales (49) dont la hauteur augmente régulièrement de la gauche vers la droite.Thus, taking as an illustration the course of breakdowns (15) represented in FIG. 11, it suffices that, from left to right, each breakdown (15) is braced or else impaled on spacers whose overhanging part is d 'a height which increases regularly from left to right. Rather than applying the lower ends of the spacers (30, 34, 48) to the supports (6), it is also possible to use shims (49) whose height increases regularly from left to right.

Enfin, on peut aussi donner longitudinalement une légère inclinaison à chaque panne (15) en utilisant des entretoises du type précité (24, 31, 37), lesdites entretoises, disposées à intervalles sensiblement réguliers le long de chaque panne (15) émergeant dudit assemblage d'une hauteur qui augmente régulièrement d'une extrémité à l'autre de cet assemblage.Finally, it is also possible to give a slight inclination longitudinally to each breakdown (15) using spacers of the aforementioned type (24, 31, 37), said spacers, arranged at substantially regular intervals along each breakdown (15) emerging from said assembly. of a height which increases regularly from one end to the other of this assembly.

Les entretoises (24, 31, 37) peuvent ainsi remplir trois fonctions:

  • elles liaisonnent entre eux les deux profilés, respectivement (16, 36);
  • elles constituent des diaphragmes de torsion au sein de chaque panne (15);
  • et enfin elles permettent l'attache de la panne sur ses appuis (6).
The spacers (24, 31, 37) can thus fulfill three functions:
  • they link together the two sections, respectively (16, 36);
  • they constitute torsion diaphragms within each breakdown (15);
  • and finally they allow the attachment of the tip on its supports (6).

Naturellement, l'invention n'est pas limitée aux modes d'application non plus qu'aux modes de réalisation qui ont été décrits ci-dessus et l'on peut concevoir diverses variantes sans sortir pour autant du cadre de ladite invention.Naturally, the invention is not limited to the modes of application any more than to the embodiments which have been described above and it is possible to conceive various variants without departing from the scope of said invention.

Claims (12)

Assemblage de profilés en tôle métallique pliée à section droite en Z, notamment pour la réalisation d'une panne (15), d'une lisse ou d'un support de plancher, chacun desdits profilés (16, 36) en Z comprenant deux semelles longitudinales (21, 22) réunies par une âme (17, 35), lesdites deux semelles étant chacune formées d'une première aile (18, 19) qui constitue un retour de l'âme et d'une seconde aile (29) qui constitue un retour de la première aile, lesdites deux premières ailes (18, 19) de chaque profilé en Z étant parallèles entre elles et de largeurs différentes et telles que celle de la première aile (18) la plus large est légèrement supérieure à la largeur de la première aile (19) la plus étroite augmentée du double de l'épaisseur de la tôle du profilé (16, 36), de sorte que la semelle la plus étroite (21) d'un premier profilé en Z puisse s'emboîter dans la semelle la plus large (22) d'un second profilé en Z identique en section audit premier profilé, ledit assemblage étant du genre constitué par la réunion par emboîtement de leurs semelles de deux profilés (16, 36) à section en Z identiques disposés tête-bêche, la semelle étroite (21) de chaque profilé étant alors disposée sensiblement dans le plan de la semelle large (22) de l'autre profilé, et étant caractérisé en ce que la semelle étroite (21) du premier profilé emboîtée dans la semelle large (22) du second profilé est d'orientation inverse de celle de ladite semelle large du second profilé, en ce que la semelle large (22) du premier profilé et la semelle étroite (21) du second profilé sont également d'orientation inverse et séparées l'une de l'autre d'une distance au moins égale à la largeur d'une première aile étroite (19) et en ce que les deux profilés ainsi assemblés tête-bêche se font face continûment et constituent un assemblage ayant sensiblement la forme d'un Ω.Assembly of sections of bent sheet metal with a straight Z-section, in particular for producing a purlin (15), a heald or a floor support, each of said Z-sections (16, 36) comprising two flanges longitudinal (21, 22) joined by a core (17, 35), said two flanges each being formed by a first wing (18, 19) which constitutes a return of the core and a second wing (29) which constitutes a return of the first wing, said first two wings (18, 19) of each Z-section being parallel to each other and of different widths and such that that of the first wing (18) the widest is slightly greater than the width of the narrowest first wing (19) increased by double the thickness of the sheet metal of the profile (16, 36), so that the narrowest flange (21) of a first Z-profile can fit together in the widest flange (22) of a second Z-profile identical in section to said first pr ofile, said assembly being of the kind constituted by the joining by interlocking of their soles of two profiles (16, 36) with identical Z-section arranged head to tail, the narrow sole (21) of each profile then being disposed substantially in the plane of the wide sole (22) of the other profile, and being characterized in that the narrow sole (21) of the first profile fitted into the wide sole (22) of the second profile has the opposite orientation to that of said wide sole of the second profile, in that the wide sole (22) of the first profile and the narrow sole (21) of the second profile are also of opposite orientation and separated from each other by a distance at least equal to the width of a first narrow wing (19) and in that the two profiles thus assembled head to tail face each other continuously and constitute an assembly having substantially the shape of an Ω. Assemblage selon la revendication 1, caractérisé en ce que l'âme (17) de chaque profilé (16) en Z forme avec la première aile (18, 19) de chacune de ses deux semelles (21, 22) un dièdre dont l'angle est égal à 90°.Assembly according to claim 1, characterized in that the core (17) of each Z-shaped section (16) forms, with the first wing (18, 19) of each of its two flanges (21, 22), a dihedral, the angle is 90 °. Assemblage selon la revendication 1, caractérisé en ce que l'âme (35) de chaque profilé (36) en Z forme avec la première aile de chacune de ses deux semelles un dièdre dont l'angle est différent de 90°.Assembly according to claim 1, characterized in that the core (35) of each Z-shaped section (36) forms with the first wing of each of its two flanges a dihedral whose angle is different from 90 °. Assemblage selon l'une des revendications 1 à 3, caractérisé en ce que les âmes (17, 35) des deux profilés (16, 36) en Z qui le constituent sont réunies sur au moins une partie de leur hauteur par des entretoises (24, 31, 37).Assembly according to one of claims 1 to 3, characterized in that the webs (17, 35) of the two Z profiles (16, 36) which constitute it are joined over at least part of their height by spacers (24 , 31, 37). Assemblage selon les revendications 2 et 4 prises en combinaison, caractérisé en ce que l'entretoise est un profilé (24) à section droite en U qui s'étend perpendiculairement à la direction générale (25) de l'assemblage, chaque aile (26) de ce U étant rendue solidaire de la face (27) de l'âme (17) d'un profilé (16) qui est tournée vers l'âme de l'autre profilé (16).Assembly according to claims 2 and 4 taken in combination, characterized in that the spacer is a profile (24) with a straight section U-shaped which extends perpendicular to the general direction (25) of the assembly, each wing (26) of this U being made integral with the face (27) of the core (17) of a profile (16) which is turned towards the core of the other profile (16). Assemblage selon les revendications 2 à 4 prises en combinaison, caractérisé en ce que l'entretoise est un tube (31) de section quadrangulaire qui s'étend perpendiculairement à la direction générale (25) de l'assemblage, deux parois opposées (32, 33) de ce tube étant rendues solidaires des âmes (17) des deux profilés (16) en Z assemblés, chaque paroi (32, 33) solidarisée étant à cette fin appliquée contre la face (27) de l'âme (17) d'un profilé (16) qui est tournée vers l'âme de l'autre profilé (16).Assembly according to claims 2 to 4 taken in combination, characterized in that the spacer is a tube (31) of quadrangular section which extends perpendicular to the general direction (25) of the assembly, two opposite walls (32, 33) of this tube being made integral with the cores (17) of the two profiles (16) in Z assembled, each wall (32, 33) secured being applied for this purpose against the face (27) of the core (17) d 'a profile (16) which faces the core of the other profile (16). Assemblage selon les revendications 3 et 4 prises en combinaison, caractérisé en ce que l'entretoise est une plaque trapézoïdale (37) dont chacun des deux petits côtés (39, 40) est prolongé par un retour (41, 42) incliné de 90° sur ladite plaque, lesdits deux petits côtés appartenant à un plan perpendiculaire à la direction générale (25) de l'assemblage et chaque retour (41, 42) de la plaque (37) étant rendu solidaire de la face (27) de l'âme (35) d'un profilé (36) qui est tournée vers l'âme de l'autre profilé (36).Assembly according to claims 3 and 4 taken in combination, characterized in that the spacer is a trapezoidal plate (37) each of whose two short sides (39, 40) is extended by a return (41, 42) inclined by 90 ° on said plate, said two short sides belonging to a plane perpendicular to the general direction (25) of the assembly and each return (41, 42) of the plate (37) being made integral with the face (27) of the core (35) of a profile (36) which faces the soul of the other profile (36). Assemblage selon l'une des revendications 5 à 7, caractérisé en ce que l'entretoise (24, 31, 37) qui réunit les âmes (17, 35) des deux profilés (16, 36) en Z émerge en (30, 34, 48) dudit assemblage et s'étend au-delà du plan (43, 44) formé par les premières ailes (18, 19) des deux semelles, respectivement étroite (21) et large (22), qui ne sont pas emboîtées.Assembly according to one of claims 5 to 7, characterized in that the spacer (24, 31, 37) which joins the webs (17, 35) of the two profiles (16, 36) in Z emerges in (30, 34 , 48) of said assembly and extends beyond the plane (43, 44) formed by the first wings (18, 19) of the two flanges, respectively narrow (21) and wide (22), which are not fitted. Assemblage selon la revendication 8, caractérisé en ce qu'il comporte plusieurs entretoises (24, 31, 37), disposées à intervalles sensiblement réguliers, lesdites entretoises émergeant dudit assemblage d'une hauteur qui augmente régulièrement d'une extrémité à l'autre de cet assemblage.Assembly according to claim 8, characterized in that it comprises several spacers (24, 31, 37), arranged at substantially regular intervals, said spacers emerging from said assembly by a height which increases regularly from one end to the other of this assembly. Assemblage selon l'une des revendications 1 à 3, caractérisé en ce que ses faces d'appui (43, 44) inférieur (ou intérieur), formées par les premières ailes, respectivement étroite (19) et large (18), des semelles, respectivement étroite (21) et large (22), qui ne sont pas emboîtées sont réunies sur au moins une partie de leur longueur par une plaque (45) qui s'étend continûment d'une face d'appui inférieur à l'autre.Assembly according to one of claims 1 to 3, characterized in that its lower (or inner) bearing faces (43, 44), formed by the first wings, respectively narrow (19) and wide (18), of the flanges , respectively narrow (21) and wide (22), which are not fitted together, are joined over at least part of their length by a plate (45) which extends continuously from one lower support face to the other . Assemblage selon l'une des revendications 1 à 10, caractérisé en ce qu'il comporte des moyens (23), telles des vis autotaraudeuses, assurant la liaison des deux profilés (16, 36) en Z qui le constitue au niveau des premières ailes, respectivement étroite (19) et large (18), des deux semelles (21, 22) emboîtées.Assembly according to one of claims 1 to 10, characterized in that it comprises means (23), such as self-tapping screws, ensuring the connection of the two profiles (16, 36) in Z which constitutes it at the level of the first wings , respectively narrow (19) and wide (18), of the two interlocking soles (21, 22). Assemblage selon la revendication 11, caractérisé en ce que ses moyens de liaison (23) des deux semelles (21, 22) emboîtées sont prévus pour, simultanément, assurer la solidarisation dudit assemblage à une toiture (1), à un bardage ou à un plancher.Assembly according to claim 11, characterized in that its connecting means (23) of the two interlocking flanges (21, 22) are provided to simultaneously secure said assembly to a roof (1), to a cladding or to a floor.
EP90403686A 1989-12-19 1990-12-19 Assembling by interlocking of two Z-profiles for the realization of a purlin, transom or floor support Withdrawn EP0434559A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916828A FR2656020B1 (en) 1989-12-19 1989-12-19 INTERLOCKING ASSEMBLY OF TWO PROFILES WITH STRAIGHT Z-SECTION, PARTICULARLY FOR THE PRODUCTION OF A PANEL, A FLOOR OR A FLOOR SUPPORT.
FR8916828 1989-12-19

Publications (1)

Publication Number Publication Date
EP0434559A1 true EP0434559A1 (en) 1991-06-26

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EP90403686A Withdrawn EP0434559A1 (en) 1989-12-19 1990-12-19 Assembling by interlocking of two Z-profiles for the realization of a purlin, transom or floor support

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EP (1) EP0434559A1 (en)
FR (1) FR2656020B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287969A (en) * 1994-03-12 1995-10-04 Midland Ind Holdings Plc Structural component, e.g. lintel
EP0825308A2 (en) * 1996-08-17 1998-02-25 Metsec Plc Constructional rafter and purlin system
US6408591B1 (en) * 1998-03-27 2002-06-25 Kabushiki Kaisha Kobe Seiko Sho Door beam of aluminum alloy
US7546718B2 (en) 2003-06-18 2009-06-16 Salvatore Vasta Extensible beam
US9512617B2 (en) * 2014-10-20 2016-12-06 John Powers, III Purlin construction and mounting system for flat roof structures

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033899A (en) * 1989-12-20 1991-07-23 Dennison Manufacturing Company Index media for loose-leaf notebooks and wirebound notebooks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1534297A (en) * 1975-08-29 1978-11-29 Metal Sections Ltd Purlins
AT366744B (en) * 1979-05-07 1982-05-10 Larssen Jens Fredrik LIGHTWEIGHT SUPPORT
BE892263A (en) * 1982-02-25 1982-08-25 Nobels Peelman N V Load-bearing steel floor plate - has hollow sectional members secured on underside and freely projecting edges along one end and one side
CA1243185A (en) * 1984-10-19 1988-10-18 John R. Kipping Structural joist

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1534297A (en) * 1975-08-29 1978-11-29 Metal Sections Ltd Purlins
AT366744B (en) * 1979-05-07 1982-05-10 Larssen Jens Fredrik LIGHTWEIGHT SUPPORT
BE892263A (en) * 1982-02-25 1982-08-25 Nobels Peelman N V Load-bearing steel floor plate - has hollow sectional members secured on underside and freely projecting edges along one end and one side
CA1243185A (en) * 1984-10-19 1988-10-18 John R. Kipping Structural joist

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287969A (en) * 1994-03-12 1995-10-04 Midland Ind Holdings Plc Structural component, e.g. lintel
GB2287969B (en) * 1994-03-12 1997-09-10 Midland Ind Holdings Plc Structural component
EP0825308A2 (en) * 1996-08-17 1998-02-25 Metsec Plc Constructional rafter and purlin system
EP0825308A3 (en) * 1996-08-17 1999-03-03 Metsec Plc Constructional rafter and purlin system
US6408591B1 (en) * 1998-03-27 2002-06-25 Kabushiki Kaisha Kobe Seiko Sho Door beam of aluminum alloy
US7546718B2 (en) 2003-06-18 2009-06-16 Salvatore Vasta Extensible beam
US9512617B2 (en) * 2014-10-20 2016-12-06 John Powers, III Purlin construction and mounting system for flat roof structures
US20170073967A1 (en) * 2014-10-20 2017-03-16 John Powers, III Purlin construction and mounting system for flat roof structures
US9816272B2 (en) * 2014-10-20 2017-11-14 John Powers, III Purlin construction and mounting system for flat roof structures

Also Published As

Publication number Publication date
FR2656020B1 (en) 1995-04-14
FR2656020A1 (en) 1991-06-21

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