EP0318450A1 - Elément pour la construction d'âmes réticulées pour poutres et éléments structuraux similaires, et méthode de fabrication d'un tel élément - Google Patents

Elément pour la construction d'âmes réticulées pour poutres et éléments structuraux similaires, et méthode de fabrication d'un tel élément Download PDF

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Publication number
EP0318450A1
EP0318450A1 EP88850397A EP88850397A EP0318450A1 EP 0318450 A1 EP0318450 A1 EP 0318450A1 EP 88850397 A EP88850397 A EP 88850397A EP 88850397 A EP88850397 A EP 88850397A EP 0318450 A1 EP0318450 A1 EP 0318450A1
Authority
EP
European Patent Office
Prior art keywords
strip
crests
struts
web
mutually
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Withdrawn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
EP88850397A
Other languages
German (de)
English (en)
Inventor
Tage Carlsson
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.)
Skanska AB
Original Assignee
Skanska AB
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 Skanska AB filed Critical Skanska AB
Publication of EP0318450A1 publication Critical patent/EP0318450A1/fr
Withdrawn legal-status Critical Current

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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
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • E04C3/09—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders at least partly of bent or otherwise deformed strip- or sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0421—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
    • E04C2003/0473—U- or C-shaped

Definitions

  • the present invention relates to an element for use in the construction of lattice webs for girders and like structural members, and to a method for manufacturing said element.
  • the web element shall also be capable of providing lattice web structures for girders and like structural elements of mutually different height dimensions and load bearing capa­cities.
  • the object of the invention is to provide precisely an ele­ment of this kind which will enable the lattice or open-work web of a girder construction to be adapted to different load bearing requirements and which can be produced by a method of manufacture which does not require the use of complicated machinery.
  • the inventive web element illustrated in Figs. 1 and 2 has a sawtooth configuration in the direction of its longitudinal axis and includes diagonal struts 1, 2 and flat crests 3.
  • the struts have a hat-like cross-sectional shape, i.e. they are bent to form a central U-beam 4, the legs of which have outwardly bent flanges or brim 5 on the extremities thereof.
  • the inner surfaces of the struts face towards one another and in the case of the illustrated embodiment the depth of the central part 4 of respective struts is such that two of the flanges 5 of mutu­ally adjacent struts will lie against one another at the crest part of each sawtooth.
  • This enables the flanges of said parts to be readily connected together, e.g. by rivet­ing or spot welding processes, thereby enabling satisfactory rigidity to be imparted to the element in a ready fashion.
  • the inventive element is produced from flat metal strip, which is coiled on a strip storage roll.
  • the metal strip is fed from the roll and passed through a punch, in which recesses 6 having the configuration shown in Fig. 3 are punched in the strip.
  • the distance between these recesses is a function of the desired height extension of the element, and will thus be contingent on the angle defined by two mutually adjacent struts of a manufactured element.
  • the punched strip is then passed through shaping rolls, in which the strip parts forming the diagonal struts are rolled to the aforesaid cross-sectional hat-like configuration.
  • the bending lines 7, 8 along which the strip is bent are indica­ted in broken lines in Fig. 3.
  • the strip is bent transversely through 90° along two mutually parallel bend lines 9 in the remaining portion of the recessed parts of the strip, these bend lines 9 being inclined at an angle to the longitudinal direction of the strip, as shown in Fig. 3, in which the bend lines are also shown in broken lines.
  • the perpendicular distance between these latter bend lines will be equal to or greater than twice the depth a of the hat-like profile of respective diagonal struts.
  • This last mentioned distance between the bend lines will preferably be 2 x a, partly so that adjacent flanges 5 of mutually adjacent struts within the crest of an element will abut one another, and partly so that mutually overlap­ping struts of mutually coacting web elements will abut one another.
  • the bend lines 9 in said remaining portion of the recessed parts of the strip are preferably angled at 45° to the longitudinal axis of the strip. This means that the diagonal struts will also slope at 45° to the longitudinal axis of the web element, which is beneficial from the aspect of load distribution.
  • ends of the other two flanges may also be bevelled-off, as indicated by chain lines 10 in Fig. 3, so that the punch dies in the punch can be made reversible.
  • Fig. 4 illustrates part of a lattice or open-frame web com­prised of two web elements which are constructed in accor­dance with Fig. 1 and which are inserted or threaded one within the other.
  • the diagonal struts of the two elements are referenced 11, 21, and 12, 21 respectively.
  • the buckle lengths of diagonal struts which are subjected to compressive loads can be reduced, by joining together, e.g. by means of spot welds, the mutually overlapping parts of the flanges 5 of the struts 11, 21 and 11, 22 res­pectively, whereby those struts which are under tension will support struts which are under compression.
  • the buckle lengths will be reduced by half, when the struts are displaced symmetrically in relation to one another.
  • the reference 11 in Fig. 4 illustrates the attachment points between the two web elements.
  • the inventive web element provides at its crest locations good attachment surfaces for the attachment of flanges which coact with the web.
  • the punch apparatus is preferably constructed so that the distance between the recesses in the strip can be adjusted.
  • the recess spacing adjustment means will conveniently be such as to enable said distance to be altered between mutually sequential punching operations. This will enable the web to be adapted for lat­tice saddle girders or other girders and like structural members in which the flanges in upper and lower edges are not parallel.
  • the invention provides a web element which enables the same basis construction unit to be used in the construction of a large variety of lattice web structures.
  • the element construction enables web element para­meters, such as height and width dimensions, to be varied with the aid of relatively simple control equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP88850397A 1987-11-25 1988-11-18 Elément pour la construction d'âmes réticulées pour poutres et éléments structuraux similaires, et méthode de fabrication d'un tel élément Withdrawn EP0318450A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8704679 1987-11-25
SE8704679A SE461075B (sv) 1987-11-25 1987-11-25 Element foer uppbyggnad av fackverksliv till balkar och foerfarande foer tillverkning av ett saadant element samt balkliv uppbyggt av tvaa eller flera saadana element

Publications (1)

Publication Number Publication Date
EP0318450A1 true EP0318450A1 (fr) 1989-05-31

Family

ID=20370387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88850397A Withdrawn EP0318450A1 (fr) 1987-11-25 1988-11-18 Elément pour la construction d'âmes réticulées pour poutres et éléments structuraux similaires, et méthode de fabrication d'un tel élément

Country Status (2)

Country Link
EP (1) EP0318450A1 (fr)
SE (1) SE461075B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001086088A1 (fr) * 2000-05-09 2001-11-15 AL KARIM CONTRACTING (Australia) PTY LTD Procede de formation d'une ame pour element de structure
WO2002053851A1 (fr) * 2000-12-28 2002-07-11 Bhp Steel Limited Ferme metallique
EP3929370A1 (fr) * 2020-06-17 2021-12-29 Staco Holding B.V. Élément structurel et grille comprenant un tel élément structurel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066388A (en) * 1932-09-17 1937-01-05 Firm Edward G Budd Mfg Company Construction of metal girders
GB493635A (en) * 1937-04-29 1938-10-12 Lewis Construction Company Ltd Improvements in and relating to metal structures
US2171673A (en) * 1938-02-11 1939-09-05 Soule Steel Company Truss construction
FR1176026A (fr) * 1957-06-14 1959-04-03 Profil Sa Ind Financ Le Poutrelle de construction
US3740917A (en) * 1971-10-20 1973-06-26 Reynolds Metals Co Structural assembly and method of making same
US3826057A (en) * 1972-01-03 1974-07-30 J Franklin Truss system
GB2034792A (en) * 1978-11-07 1980-06-11 Lysaght Australia Ltd Structural elements

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066388A (en) * 1932-09-17 1937-01-05 Firm Edward G Budd Mfg Company Construction of metal girders
GB493635A (en) * 1937-04-29 1938-10-12 Lewis Construction Company Ltd Improvements in and relating to metal structures
US2171673A (en) * 1938-02-11 1939-09-05 Soule Steel Company Truss construction
FR1176026A (fr) * 1957-06-14 1959-04-03 Profil Sa Ind Financ Le Poutrelle de construction
US3740917A (en) * 1971-10-20 1973-06-26 Reynolds Metals Co Structural assembly and method of making same
US3826057A (en) * 1972-01-03 1974-07-30 J Franklin Truss system
GB2034792A (en) * 1978-11-07 1980-06-11 Lysaght Australia Ltd Structural elements

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001086088A1 (fr) * 2000-05-09 2001-11-15 AL KARIM CONTRACTING (Australia) PTY LTD Procede de formation d'une ame pour element de structure
WO2002053851A1 (fr) * 2000-12-28 2002-07-11 Bhp Steel Limited Ferme metallique
AU2002215699B2 (en) * 2000-12-28 2006-08-17 Bluescope Steel Limited Metal roof truss
CN1300428C (zh) * 2000-12-28 2007-02-14 布卢斯科普钢铁有限公司 金属屋顶桁架
CN100351476C (zh) * 2000-12-28 2007-11-28 布卢斯科普钢铁有限公司 金属屋顶桁架
EP3929370A1 (fr) * 2020-06-17 2021-12-29 Staco Holding B.V. Élément structurel et grille comprenant un tel élément structurel
NL2025847B1 (en) * 2020-06-17 2022-02-22 Staco Holding B V A grate comprising at least one structural element

Also Published As

Publication number Publication date
SE461075B (sv) 1990-01-08
SE8704679D0 (sv) 1987-11-25
SE8704679L (sv) 1989-05-26

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