EP0434559A1 - Zusammensetzung durch Überlappung von zwei Z-Profilen zur Herstellung einer Pfette, eines Riegels oder Fussbodenauflagers - Google Patents

Zusammensetzung durch Überlappung von zwei Z-Profilen zur Herstellung einer Pfette, eines Riegels oder Fussbodenauflagers 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
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90403686A
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English (en)
French (fr)
Inventor
Jean Mouty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PROFILCOMETUBE
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PROFILCOMETUBE
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Filing date
Publication date
Application filed by PROFILCOMETUBE filed Critical PROFILCOMETUBE
Publication of EP0434559A1 publication Critical patent/EP0434559A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP90403686A 1989-12-19 1990-12-19 Zusammensetzung durch Überlappung von zwei Z-Profilen zur Herstellung einer Pfette, eines Riegels oder Fussbodenauflagers Withdrawn EP0434559A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916828A FR2656020B1 (fr) 1989-12-19 1989-12-19 Assemblage par emboitement de deux profiles a section droite en z, notamment pour la realisation d'une panne, d'une lisse ou d'un support de plancher.
FR8916828 1989-12-19

Publications (1)

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

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Family Applications (1)

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EP90403686A Withdrawn EP0434559A1 (de) 1989-12-19 1990-12-19 Zusammensetzung durch Überlappung von zwei Z-Profilen zur Herstellung einer Pfette, eines Riegels oder Fussbodenauflagers

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EP (1) EP0434559A1 (de)
FR (1) FR2656020B1 (de)

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 (de) * 1996-08-17 1998-02-25 Metsec Plc Pfetten und Sparren-Bausystem
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 (de) * 1979-05-07 1982-05-10 Larssen Jens Fredrik Leichtbau-tragelement
BE892263A (nl) * 1982-02-25 1982-08-25 Nobels Peelman N V Zelfdragende stalen vloerplaat
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 (de) * 1979-05-07 1982-05-10 Larssen Jens Fredrik Leichtbau-tragelement
BE892263A (nl) * 1982-02-25 1982-08-25 Nobels Peelman N V Zelfdragende stalen vloerplaat
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 (de) * 1996-08-17 1998-02-25 Metsec Plc Pfetten und Sparren-Bausystem
EP0825308A3 (de) * 1996-08-17 1999-03-03 Metsec Plc Pfetten und Sparren-Bausystem
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 (fr) 1995-04-14
FR2656020A1 (fr) 1991-06-21

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