EP0177634A1 - Strukturelement, insbesondere zum Bilden von Gittermasten für elektrische Leitungen - Google Patents

Strukturelement, insbesondere zum Bilden von Gittermasten für elektrische Leitungen Download PDF

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Publication number
EP0177634A1
EP0177634A1 EP84112273A EP84112273A EP0177634A1 EP 0177634 A1 EP0177634 A1 EP 0177634A1 EP 84112273 A EP84112273 A EP 84112273A EP 84112273 A EP84112273 A EP 84112273A EP 0177634 A1 EP0177634 A1 EP 0177634A1
Authority
EP
European Patent Office
Prior art keywords
sections
structural element
flanges
stringers
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84112273A
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English (en)
French (fr)
Other versions
EP0177634B1 (de
Inventor
Luigi Paris
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.)
SAE Sadelmi SpA
Original Assignee
SAE Sadelmi SpA
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Filing date
Publication date
Application filed by SAE Sadelmi SpA filed Critical SAE Sadelmi SpA
Priority to DE8484112273T priority Critical patent/DE3484441D1/de
Priority to EP84112273A priority patent/EP0177634B1/de
Priority to AT84112273T priority patent/ATE62519T1/de
Publication of EP0177634A1 publication Critical patent/EP0177634A1/de
Application granted granted Critical
Publication of EP0177634B1 publication Critical patent/EP0177634B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials 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
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E04C2003/0417—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts demountable
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—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
    • E04C2003/0447—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped

Definitions

  • This invention relates to improved structural elements for metal structural work, which have the advantages both of tubular elements (mainly, shape stability and torsional rigidity) and of open sections (mainly, low production costs, easiness of connection, convenience in transportation).
  • the present invention also relates to structures, generally flat and three-dimensional girders, and in particular supports for overhead electric power transmission lines, which can be constructed in particularly advantageous manner with said improved structural elements.
  • the object of the present invention is to provide a strutural element for metal structural work, which combines the advantageous properties of the aforesaid known structural elements without possessing their defects, thus allowing to plan and construct supports for overhead electric power transmission lines, or any other type of truss or structure, with considerable advantages over the known art.
  • the structural element for metal structural work according to the invention is characterized in that it is formed of a pair of half-shell fellow sections, arranged with their concavities opposed and connected together in a discrete manner along their long sides, such as to guarantee a much higher torsional rigidity than that provided by corresponding open sections.
  • connection between said half-shell section is obtained by means of bolts applied at a certain mutual distance between flanges of said sections, said flanges being preferably kept spaced-apart and parallel by inserting cross stiffening brackets in correspondence of the connection. bolts, or by interposing sections or bent plates.
  • the structures which can be constructed using structural elements of the aforesaid type specifically include, in the present invention, a particularly slender flat girder, obtained by forming its stringers with structural elements of the aforespecified type, connected together in such a manner as to prevent any relative rotation of the sections of the two stringers, so that the torsional rigidity of said stringers opposes any lateral deviations (outside the girder plane) of the compressed stringer.
  • the structural element according to the invention is formed of a pair of open half-shell fellow sections 1, arranged with their concavities opposed and connected together in a discrete manner along their long sides.
  • the sections 1 are channel sections with a very wide base 1A and with outwardly inclined sides 1B, terminating with flanges 2 parallel to the base 1A.
  • the discrete or discontinuous connection of the two sections 1 is obtained, in the illustrated embodiments, by means of bolts 3 applied at a certain mutual distance, either singly or in pairs, between the flanges 2 of said sections 1.
  • slots 4 are also useful for inserting hooking memebers to facilitate climbing the structures formed therewith, and for indroducing means to spray-paint the interior of said structural elements.
  • cross stiffening brackets 5 disposed at a certain distance apart, are inserted between the flanges 2 in the zones of application of the bolts 3.
  • FIG. 1 bis One method for connecting together the flanges 2 of the two half-shell sections 1 of a the structural element according to the invention, and which is particularly advantageous for attaining the proposed objects, is shown in figure 1 bis.
  • the bores 2A for the bolts 3, made into the section flanges 2 are deep-drawn in order to cooperate with corresponding cavities 5A provided in the surfaces of the cross stiffening brackets 5.
  • This arrangement prevents any possible relative slinding between the thus connected flanges 2 of the two sections forming the structural element, thereby also increasing the torsional rigidity of the structural element itself.
  • Figure 4 shows a structural element according to the invention, particularly suited to form the stringers of three-dimensional girders, for example for lattice supports for overhead electric power transmission lines.
  • This element is formed by associating a half-shell section 1, of the type used for the structural elements of figures 1 to 3, to a simple angle section 1C.
  • the connection is again obtained using cross stiffening brackets 5 and bolts 3, applied between the flanges 2 of the section 1 and the edges of the long sides of the section 1C acting as flanges.
  • slots 4 are formed between the two sections of the structural element, for the assembly of which the construction method of figure 1 bis can be applied with all the advantages deriving therefrom.
  • This element has all the advantages of open sections, with regard to productions costs, easiness of connection (as illustrated hereinafter), easy galvanising, and reduced transportation bulk (as can be easily seen from figure 5, which shows the system for packaging the component half-shell sections). It also has the essential advantage of structural tube elements, namely to guarantee a much higher torsional rigidity than the corresponding open sections.
  • the structural element according to the invention has none of the basic drawbacks of tubes.
  • by varying the assembly method of the component half-shell sections it is also possible to vary the strength and flexural rigidity according to one axis.
  • the assembly can also be carried out in such a manner as to continuously vary the strenth along the length of the structural element, by using cross stiffening brackets of different thickness, or plates or sections of variable thickness, for spacing the flanges of the opposed half-shell sections.
  • a tapered structural element can thus be formed.
  • component sections of the element according to the invention can be manufactured using the same rolls for different sizes of their base lA, leading to a further advantage in production costs.
  • FIG. 6 An example of a girder of this type is the bidimensional self-braced trestle support for overhead electric power transmission lines shown in figure 6.
  • two sets of structural elements 11 and 12 according to the invention are used, for example of the type shown in figure 1, arranged -to form two stringers which are mutually inclined over the major length A of the height of the support, but which run parallel and close at the top B of said support.
  • the stringers formed by the elements 11 and 12 are connected together in two zones C and D by similar transversal elements 13 and 14.
  • Figures 7 and 8 show respectively a possible scheme for connecting together the elements 11 and 13 in zone C of the support, and for connecting together the elements 11 and 12 in the top part B of said support (this latter connection being obtained by applying simple channel sections 15).
  • the simplicity, easiness and efficiency of the connections between the support components can be easily deduced from these figures.
  • the support of figure 6 could advantageously be formed in its top part B as a single element shaped as a tube, by joining together the two structural elements which form its stringers through connection of their two outer half-shell sections with two inner channel sections (namely forming at the top B of the support a single structural element of the type shown in figure 3).
  • the structural elements according to the invention are suitable not only for constructing any appropriate type of metal structural work - with all the advantages deriving from combining the merits of open sections and of tubes, but without their defects - but also for forming ordinary three-dimensional girders, in particular three-dimensional supports for overhead electric power transmission lines.
  • Figure 9 is a diagrammatic view of one of these supports, in the form of a girder comprising four stringers 16, each constituted by structural elements according to the invention of the type shown in figure 4.
  • Figures 10 and 11 are a side view and, respectively, a horizontal section view of one of the stringers 16, at the connection of the lattice members 17.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)
EP84112273A 1984-10-12 1984-10-12 Strukturelement, insbesondere zum Bilden von Gittermasten für elektrische Leitungen Expired - Lifetime EP0177634B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8484112273T DE3484441D1 (de) 1984-10-12 1984-10-12 Strukturelement, insbesondere zum bilden von gittermasten fuer elektrische leitungen.
EP84112273A EP0177634B1 (de) 1984-10-12 1984-10-12 Strukturelement, insbesondere zum Bilden von Gittermasten für elektrische Leitungen
AT84112273T ATE62519T1 (de) 1984-10-12 1984-10-12 Strukturelement, insbesondere zum bilden von gittermasten fuer elektrische leitungen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84112273A EP0177634B1 (de) 1984-10-12 1984-10-12 Strukturelement, insbesondere zum Bilden von Gittermasten für elektrische Leitungen

Publications (2)

Publication Number Publication Date
EP0177634A1 true EP0177634A1 (de) 1986-04-16
EP0177634B1 EP0177634B1 (de) 1991-04-10

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Family Applications (1)

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EP84112273A Expired - Lifetime EP0177634B1 (de) 1984-10-12 1984-10-12 Strukturelement, insbesondere zum Bilden von Gittermasten für elektrische Leitungen

Country Status (3)

Country Link
EP (1) EP0177634B1 (de)
AT (1) ATE62519T1 (de)
DE (1) DE3484441D1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713079U1 (de) * 1987-09-29 1987-11-12 Durlum-Leuchten Gmbh Lichttechnische Spezialfabrik, 7860 Schopfheim, De
EP0407998A2 (de) * 1989-07-14 1991-01-16 SAE SADELMI S.p.A. Zweidimensionaler Fachwerkträger, insbesondere zur Abstützung von Überlandleitungen
EP0440567A1 (de) * 1990-02-02 1991-08-07 Profilcometube Einzelne und doppelte Träger und Pfosten, bestehend aus der Zusammensetzung von Z-Trägern, die insbesondere die Realisierung eines Rahmens oder einer Kniestütze für den Bau eines Gebäudes erlauben
EP0819802A2 (de) * 1993-08-19 1998-01-21 Ward Building Systems Limited Strukturelemente

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR47832E (fr) * 1936-11-19 1937-07-31 Mortsel Et Etablissements Geer Poteau servant à la suspension de lignes électriques et autres
FR951882A (fr) * 1947-07-07 1949-11-04 Procédé de fabrication de tube pour construction métallique par emmanchement d'éléments
LU60543A1 (de) * 1970-03-17 1970-05-21
DE1759568A1 (de) * 1968-05-15 1971-06-16 Transnorm Foerderanlagen Und S Traegerartiges Bauelement mit kastenfoermigem Hohlprofil
GB2081792A (en) * 1980-08-13 1982-02-24 Acrow Eng Ltd Formwork Soldier
AU536400B3 (en) * 1983-12-07 1984-05-03 Clara Investments Pty. Limited Metal post

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR47832E (fr) * 1936-11-19 1937-07-31 Mortsel Et Etablissements Geer Poteau servant à la suspension de lignes électriques et autres
FR951882A (fr) * 1947-07-07 1949-11-04 Procédé de fabrication de tube pour construction métallique par emmanchement d'éléments
DE1759568A1 (de) * 1968-05-15 1971-06-16 Transnorm Foerderanlagen Und S Traegerartiges Bauelement mit kastenfoermigem Hohlprofil
LU60543A1 (de) * 1970-03-17 1970-05-21
GB2081792A (en) * 1980-08-13 1982-02-24 Acrow Eng Ltd Formwork Soldier
AU536400B3 (en) * 1983-12-07 1984-05-03 Clara Investments Pty. Limited Metal post

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713079U1 (de) * 1987-09-29 1987-11-12 Durlum-Leuchten Gmbh Lichttechnische Spezialfabrik, 7860 Schopfheim, De
EP0407998A2 (de) * 1989-07-14 1991-01-16 SAE SADELMI S.p.A. Zweidimensionaler Fachwerkträger, insbesondere zur Abstützung von Überlandleitungen
EP0407998A3 (en) * 1989-07-14 1991-05-15 Sae Sadelmi S.P.A. Bidimensional truss structure, particularly support for overhead electric energy transmission lines
US5079891A (en) * 1989-07-14 1992-01-14 Sae Sadelmi S.P.A. Bidimensional truss structure, particularly support for overhead electric energy transmission lines
EP0440567A1 (de) * 1990-02-02 1991-08-07 Profilcometube Einzelne und doppelte Träger und Pfosten, bestehend aus der Zusammensetzung von Z-Trägern, die insbesondere die Realisierung eines Rahmens oder einer Kniestütze für den Bau eines Gebäudes erlauben
FR2657909A1 (fr) * 1990-02-02 1991-08-09 Profilcometube Poutres et poteaux, simples et doubles, constitues par la reunion de profiles a section droite en z, et permettant notamment la realisation d'un portique ou d'une potence destine a une construction de batiment.
EP0819802A2 (de) * 1993-08-19 1998-01-21 Ward Building Systems Limited Strukturelemente
EP0819802A3 (de) * 1993-08-19 1999-04-28 Ward Building Systems Limited Strukturelemente

Also Published As

Publication number Publication date
ATE62519T1 (de) 1991-04-15
DE3484441D1 (de) 1991-05-16
EP0177634B1 (de) 1991-04-10

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