EP0457877A1 - Element structurel - Google Patents

Element structurel

Info

Publication number
EP0457877A1
EP0457877A1 EP91900674A EP91900674A EP0457877A1 EP 0457877 A1 EP0457877 A1 EP 0457877A1 EP 91900674 A EP91900674 A EP 91900674A EP 91900674 A EP91900674 A EP 91900674A EP 0457877 A1 EP0457877 A1 EP 0457877A1
Authority
EP
European Patent Office
Prior art keywords
pair
web
structural member
flanges
components
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Withdrawn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
EP91900674A
Other languages
German (de)
English (en)
Other versions
EP0457877A4 (en
Inventor
Simon John Lewis
Maurice Desmond Robinson
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.)
PELL-MELL PTY Ltd
Original Assignee
PELL-MELL PTY Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PELL-MELL PTY Ltd filed Critical PELL-MELL PTY Ltd
Publication of EP0457877A1 publication Critical patent/EP0457877A1/fr
Publication of EP0457877A4 publication Critical patent/EP0457877A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
    • F16S3/06—Assemblies of elongated members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/40—Arched girders or portal frames of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped

Definitions

  • This invention relates to a composite structural member which can be used for example as a post, beam, rafter, floor joist, or for other purposes in building or agricultural construction, fencing and other general purposes.
  • An object of the invention i ⁇ therefore to provide a cross-sectional shape of a two-component beam wherein contiguity is retained between inner and outer laminae having the extreme fibres, without the use of fasteners. It i ⁇ a further object to provide a shape wherein the components can be readily roll-formed, and after roll-forming, can be readily sprung together to form the hollow section composite beam, but retain its shape and full strength * p to failure.
  • a composite structural member is fabricated by springing together two generally 'C section components, each of which has a web with a pair of ribs extending along it, upper and lower flanges terminating at their edges in sub-flanges directed towards each other, and at least one sub-flange terminates in a lip which is directed back towards the web.
  • a lip of each component engages an inner surface of a rib of the other component, thereby inhibiting displacement of contiguous flanges, and maintaining a high moment of inertia which inhibits excessive deflection of the member under load.
  • the invention consists of a pair of generally r C-section components of identical constant cross- sectional shape, each having two spaced parallel main flanges, a web flanking the main flanges and joining a first pair of corresponding edges thereof, sub-flanges parallel to the web extending generally towards each other from a second pair of corresponding edges of the main flanges, and a return stiffening lip directed towards the web from at least one of the sub-flanges, said web having a pair of inwardly formed ribs defined by inwardly directed wall portions, said at least one lip of each one of the 'C-section components engaging an inner surface of a said inwardly directed wall portion of a said web rib of the other ' C-section component.
  • the structural member when under load and placed with the webs parallel to the plane of the load direction, can provide effective upper and lower extreme fibres of the section of double metal thickness, the intermediate portions being a single metal thickness of the webs.
  • a first drawing represents the closest art known to the Applicants
  • Fig. 1 is a fragmentary perspective view of a composite structural member according to the invention
  • Fig. 2 illustrates the springing together of two roll- formed components of identical cross-section to fabricate a structural member
  • Fig. 3 illustrates diagrammatically a typical usage of the members, in the construction of a building
  • Fig. 4 illustrates a test arrangement in which the deflection was tested against load applied, the results being shown below.
  • the first drawing illustrates the closest prior art known to the Applicants, that is the aforesaid Hunter Douglas R.F. Beam.
  • the hollow structural member 10 comprises two identical member 'C-section components 11 each of which is formed from sheet metal and comprise ⁇ a web 12 flanking two main flanges 13 each of which ter inate ⁇ along corresponding edges in an inturned sub-flange 14, and each of the sub-flange ⁇ 14 is provided with stiffening lips 15a and 15b extending along its inner edge. (In some instances the lip 15a is omitted. )
  • Each web 12 is provided with a pair of spaced ribs 16 defined by inwardly directed sloping wall portions 17, and upon assembly, lips 15a and 15b of each of the 'C-section components 11 engage respective outer and inner surfaces of the inwardly directed wall portions 17. It is this engagement which assists inhibition of displacement of the contiguous main flanges 13 of the two member components 11, even when no fasteners are used to retain them.
  • the main flanges 14 are also provided with ribs 18 which are de ⁇ irable in the roll-forming, and also stiffen the main flanges.
  • the outside dimension 'd' across the width of one main flange 13 which carries the inner of the lips 15 is two metal thicknesses less than the corresponding width 'D' of the flange which carries the outer of the stiffening lips 15.
  • the illustrations show the sections 11 each having been formed of identical cross-sectional shape by a roll-forming process.
  • the invention is not necessarily limited to the roll-forming process and in some embodiments it is desirable to produce the sections by an extrusion process, for example of structural aluminium.
  • the assembly which is shown provides a structural member 10 which has very substantial strength because if load is applied vertically to the assembly of Fig. 2, upper and lower chords of the structural member have double metal thickness and the strength of the compo ⁇ ite member i ⁇ con ⁇ iderable even without the use of fasteners which may however be added to compensate for the shear forces which exist when the member is subjected to loading.
  • fasteners which may however be added to compensate for the shear forces which exist when the member is subjected to loading.
  • a roof support bracket 25 comprises side plates 26 spaced apart by two L-shaped spacers 27 to form, in effect, three sockets 28 (for the post 21), 29 (for the tie beam 23), and 30 (for rafter 22).
  • a ridge support as ⁇ embly 32 comprises plates forming two sockets 33 for raf ers, joined together by fasteners through contiguous clamp plates 34.
  • Side plates 36 intermediate the end ⁇ of tie beam 23 provide clamping means for the lower end of strut 24.
  • Fig 4 illustrates a deflection testing arrangement wherein a structural member was compared with the illustrated prior art.
  • the representations are accurately drawn, and the overall dimensions of the two sections were identical, the metal thickness identical, but the Applicants' rolled section was necessarily of a softer grade of aluminium (H34 standard half- hard, compared with HI6 structural grade).
  • the relative strengths are as follows:
  • the deflection/load ratio was within an anticipated range

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Glass Compositions (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

On fabrique un élément structurel composite (10) en serrant ensemble deux composants possédant généralement une section en forme de 'C' (11), chacune d'elles possédant une âme (12) comportant une paire de nervures (16) tout au long de celle-ci, des rebords principaux supérieur et inférieur (13) se terminant à leur extrémité en rebords secondaires (14) dirigés les uns vers les autres, chaque rebord secondaire se terminant par une lèvre (15a, 15b) dirigée vers l'âme (12). Les lèvres (15a, 15b) de chaque composant enserrant respectivement les surfaces externes et internes des nervures (16) de l'autre composant empêchant ainsi le déplacement des rebords contigus (13) et maintenant un fort moment d'inertie empêchant une déflexion excessive de l'élément sous application d'une charge.
EP19910900674 1989-12-08 1990-12-04 Structural member Withdrawn EP0457877A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU7847/89 1989-12-08
AUPJ784789 1989-12-08

Publications (2)

Publication Number Publication Date
EP0457877A1 true EP0457877A1 (fr) 1991-11-27
EP0457877A4 EP0457877A4 (en) 1992-05-13

Family

ID=3774414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910900674 Withdrawn EP0457877A4 (en) 1989-12-08 1990-12-04 Structural member

Country Status (7)

Country Link
EP (1) EP0457877A4 (fr)
KR (1) KR920701751A (fr)
CN (1) CN1054640A (fr)
AU (1) AU652139B2 (fr)
CA (1) CA2047224A1 (fr)
WO (1) WO1991009252A1 (fr)
ZA (1) ZA909681B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021913A1 (fr) * 1991-05-28 1992-12-10 John Vincent Moore (Consulting Engineers) Pty. Ltd Poutre d'acier et procede de fabrication
AU649335B2 (en) * 1991-06-28 1994-05-19 Stratco Metal Proprietary Limited Improved tubular section
WO1993015353A1 (fr) * 1992-01-24 1993-08-05 Rmt Pty. Ltd. Profile destine a un element porteur composite
AU767942B2 (en) * 1992-06-29 2003-11-27 Stratco Metal Proprietary Limited Further improved tubular section
FR2714861B1 (fr) * 1994-01-12 1996-03-29 Saint Maxent Michel Dispositif d'éclissage pour profilé.
DE9401416U1 (de) * 1994-01-28 1994-03-10 Vogl, Erich R., 91448 Emskirchen Verbindungselement zum Längsverbinden von C-Profilen
GB9407295D0 (en) * 1994-04-13 1994-06-08 Midland Ind Holdings Plc Structural element and structure incorporating such element
AUPP590998A0 (en) * 1998-09-14 1998-10-08 Spantec Systems Pty Ltd Improvements relating to trusses
GB2414025B (en) * 2004-05-14 2006-07-05 Blue Cube A seating support beam
NL1029063C2 (nl) * 2005-05-17 2006-11-20 Beno Techniek B V Constructiesysteem en werkwijze voor het vormen van het constructiesysteem.
NZ565873A (en) * 2005-08-08 2011-02-25 Dematic Pty Ltd A storage racking beam with a horizontal loading capacity independent of its vertical loading capacity
AU2010249239A1 (en) * 2009-12-22 2011-07-07 Bluescope Steel Limited Improved box beam and C-section structural member therefor
RU2478764C1 (ru) * 2011-11-07 2013-04-10 Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" Гнутый стальной профиль и составной строительный элемент на его основе
CN108978870A (zh) * 2018-06-29 2018-12-11 浙江展诚建设集团股份有限公司 折线形钢梁与混凝土组合结构施工方法
RU197859U1 (ru) * 2019-12-13 2020-06-03 Общество с ограниченной ответственностью «Забор Профиль» Планка

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6902562A (fr) * 1969-02-18 1970-08-20
FR2114490A5 (fr) * 1970-11-11 1972-06-30 Kramme Et Zeuthen As
DE2313041A1 (de) * 1972-03-27 1973-10-11 United States Gypsum Co Mit einem gleichartigen zu einem geschlossenen kastenprofil zusammensteckbares profil
AU513719B2 (en) * 1977-05-25 1980-12-18 Fletcher Industries Ltd. Building construction
AU514640B2 (en) * 1976-12-07 1981-02-19 Roll Form Industries Pty. Ltd. Interconnection of members
DE8911488U1 (de) * 1989-09-27 1989-11-16 Chen, Aden, Changhua City Rahmenkonstruktion für ein transportables Gebäude

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB849321A (en) * 1958-04-01 1960-09-21 Alberto Pagan Improvements relating to girders
AU477444B2 (en) * 1972-08-16 1974-10-03 G. J. HOLDINGS PTY. LTD. and ROEBUCK DEVELOPMENTS PTY. LTD Improved truss
FR2568668B3 (fr) * 1984-08-03 1986-09-05 Profilafroid Sa Longeron de casier.
DE3809046A1 (de) * 1988-03-18 1989-09-28 Hoesch Stahl Ag Traeger aus stahlblech

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6902562A (fr) * 1969-02-18 1970-08-20
FR2114490A5 (fr) * 1970-11-11 1972-06-30 Kramme Et Zeuthen As
DE2313041A1 (de) * 1972-03-27 1973-10-11 United States Gypsum Co Mit einem gleichartigen zu einem geschlossenen kastenprofil zusammensteckbares profil
AU514640B2 (en) * 1976-12-07 1981-02-19 Roll Form Industries Pty. Ltd. Interconnection of members
AU513719B2 (en) * 1977-05-25 1980-12-18 Fletcher Industries Ltd. Building construction
DE8911488U1 (de) * 1989-09-27 1989-11-16 Chen, Aden, Changhua City Rahmenkonstruktion für ein transportables Gebäude

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9109252A1 *

Also Published As

Publication number Publication date
CA2047224A1 (fr) 1991-06-09
CN1054640A (zh) 1991-09-18
KR920701751A (ko) 1992-08-12
WO1991009252A1 (fr) 1991-06-27
AU6954991A (en) 1991-07-18
ZA909681B (en) 1991-09-25
EP0457877A4 (en) 1992-05-13
AU652139B2 (en) 1994-08-18

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