EP0177634A1 - Structural element particularly for obtaining electric line support girders - Google Patents
Structural element particularly for obtaining electric line support girders Download PDFInfo
- 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
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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)
- Manufacturing Of Electric Cables (AREA)
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
Description
- 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.
- For the construction of supports for overhead electric power transmission lines, structural elements are currently used consisting essentially of open sections (usually angle irons), which are favored for their low production costs, easiness of connection, easy protection treatments (galvanising) and reduced transportation bulk.
- However these elements, which are well known and widely spread, give rise to local or torsional instability problems when used as bars subjected to combined compressive and bending stresses, such problems being solved by using sections which are thicker and heavier than desirable.
- Moreover, flat or slender structures constructed with these conventional elements have very low critical out-of-plane twisting loads, a consequence of the torsional instability of the component parts, and this can be a serious limitation in planning of certain advanced types of supports for electric lines.
- All these drawbacks could easily be eliminated by replacing the structural elements in the form of open sections by tubular metal elements. However these latter, though having properties which have long been known and appreciated, have had little application in practise because of the high production costs of the tubes, the difficulty of making the connections and the consequent high costs of these latter, and the considerable transportation bulk thereof.
- 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.
- Essentially, 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.
- In this structural elements the 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.
- Many other structures for metal structural work can also be obtained, and in particular three-dimensional girders in the form of lattice supports.
- The invention is described hereinafter in greater detail with reference to the accompanying drawings, in which:
- Fig. 1 is an interrupted perspective view of a first embodiment of the structural element according to the invention;
- Fig. 1 bis shows, on an enlarged scale, a construction detail of said structural element;
- Figs. 2, 3 and 4 are interrupted perspective views of three other embodiments of the structural element according to the invention;
- Fig. 5 shows the transport packaging system for the half-shell sections used to form the structural elements of figures 1 to 4;
- Fig. 6 is a diagrammatic illustration of a bidimensional self-braced trestle support for overhead electric power transmission lines, constructed as a particularly slender flat girder, using structural elements of the type show in figures 1 to 3 according to the invention to form its stringers;
- Figs. 7 and 8 are detailed views of some construction details of the support of figure 6;
- Fig. 9 shows a lattice support or anchor tower for overhead electric power transmission lines, constructed in the form of a three-dimensional girder, using structural elements of the type shown in figure 4 according to the invention to form its stringers; and
- Figs. 10 and 11 are detailed views of some construction details of the support of figure 9.
- With reference to the drawings, it can be seen from figures 1 to 3 that 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. - In the embodiments shown, the
sections 1 are channel sections with a verywide base 1A and with outwardlyinclined sides 1B, terminating withflanges 2 parallel to thebase 1A. - The discrete or discontinuous connection of the two
sections 1 is obtained, in the illustrated embodiments, by means ofbolts 3 applied at a certain mutual distance, either singly or in pairs, between theflanges 2 ofsaid sections 1. - It is preferable to keep the
sections 1 and theirflanges 2 spaced apart in order to formslots 4 in the structural elements according to the invention, apt to prevent extended contact between the flanges which could give rise to corrosion phenomena. These slots 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. - For this purpose,
cross stiffening brackets 5, disposed at a certain distance apart, are inserted between theflanges 2 in the zones of application of thebolts 3. - 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. As can seen, thebores 2A for thebolts 3, made into thesection flanges 2, are deep-drawn in order to cooperate withcorresponding cavities 5A provided in the surfaces of the cross stiffeningbrackets 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. - Further solutions are shown in figures 2 and 3, wherein a zig-zag bent plate 6 and a
channel section 7 are respectively interposed between theflanges 2 of the half-shell sections 1. - A solution representing a combination of those illustrated is also possible. This is obtained by connecting the
flanges 2 to the plate 6 or section 7 - rather than in a discrete manner - with the interposition ofcross stiffening brackets 5. - 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 stiffeningbrackets 5 andbolts 3, applied between theflanges 2 of thesection 1 and the edges of the long sides of the section 1C acting as flanges. Also in this case,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. - In each case - as can be seen - a structural element is obtained, formed likewise a tube but the component parts of which are open sections.
- 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. However, the structural element according to the invention has none of the basic drawbacks of tubes. In the element according to the invention, 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. Thus, with the elements of figures 2 and 3, in which the bent plates 6 or
channel sections 7 are inserted between theflanges 2 of thesections 1, a greater spacing is obtained between the component half-shell sections, and thus increased strength and flexural rigidity than in the element of figure 1, in which thecomponent sections 1 are closer together as they are separated by the thinnercross stiffening brackets 5. - 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.
- It should also be noted that the 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.
- With the structural elements according to the invention, it is possible to very advantageously obtain a particularly slender flat girder, with the two stringers formed from said elements, connected together in such a manner that the torsional rigidity of the stringers prevents any lateral deviations - outside the girder plane - of the compressed stringer.
- 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. To construct this support, two sets of
structural elements elements transversal elements elements elements - It should be noted that 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 thestringers 16, at the connection of thelattice members 17. - It is apparent that, using the structural elements of figure 4 according to the invention, in a support of the type shown in figure 9, drastically reduces problems deriving from torsional and local instability, which are always present in such structures, whereby sections of very reduced thickness, and thus much lighter, can be used in said structures, with obvious considerable advantages.
- It is understood that only some embodiments of the structural element according to the invention and some examples of the structures which can be constructed therewith, have been described and illustrated. Other embodiments of the structural element, or modifications of those shown, obviously fall within the scope of the present invention, which also comprises any type of structure - even if quite different from those shown by way of example - using said structural element.
Claims (15)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8484112273T DE3484441D1 (en) | 1984-10-12 | 1984-10-12 | STRUCTURAL ELEMENT, ESPECIALLY FOR MAKING GRILTS FOR ELECTRICAL CABLES. |
EP84112273A EP0177634B1 (en) | 1984-10-12 | 1984-10-12 | Structural element particularly for obtaining electric line support girders |
AT84112273T ATE62519T1 (en) | 1984-10-12 | 1984-10-12 | STRUCTURAL ELEMENT, IN PARTICULAR FOR FORMING LATERAL POLE FOR ELECTRICAL CABLES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP84112273A EP0177634B1 (en) | 1984-10-12 | 1984-10-12 | Structural element particularly for obtaining electric line support girders |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0177634A1 true EP0177634A1 (en) | 1986-04-16 |
EP0177634B1 EP0177634B1 (en) | 1991-04-10 |
Family
ID=8192216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84112273A Expired - Lifetime EP0177634B1 (en) | 1984-10-12 | 1984-10-12 | Structural element particularly for obtaining electric line support girders |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0177634B1 (en) |
AT (1) | ATE62519T1 (en) |
DE (1) | DE3484441D1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8713079U1 (en) * | 1987-09-29 | 1987-11-12 | Durlum-Leuchten Gmbh Lichttechnische Spezialfabrik, 7860 Schopfheim | Wide span beams |
EP0407998A2 (en) * | 1989-07-14 | 1991-01-16 | SAE SADELMI S.p.A. | Bidimensional truss structure, particularly support for overhead electric energy transmission lines |
EP0440567A1 (en) * | 1990-02-02 | 1991-08-07 | Profilcometube | Simple and double girders and posts constituted by the connection of Z-shaped profiles, and permitting in particular the realization of a frame or a bracket, for use in a building's construction |
EP0819802A2 (en) * | 1993-08-19 | 1998-01-21 | Ward Building Systems Limited | Structural members |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR47832E (en) * | 1936-11-19 | 1937-07-31 | Mortsel Et Etablissements Geer | Pole used to suspend power lines and others |
FR951882A (en) * | 1947-07-07 | 1949-11-04 | Method of manufacturing a tube for metal construction by fitting elements | |
LU60543A1 (en) * | 1970-03-17 | 1970-05-21 | ||
DE1759568A1 (en) * | 1968-05-15 | 1971-06-16 | Transnorm Foerderanlagen Und S | Beam-like component with a box-shaped hollow profile |
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 |
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1984
- 1984-10-12 DE DE8484112273T patent/DE3484441D1/en not_active Expired - Fee Related
- 1984-10-12 AT AT84112273T patent/ATE62519T1/en not_active IP Right Cessation
- 1984-10-12 EP EP84112273A patent/EP0177634B1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR47832E (en) * | 1936-11-19 | 1937-07-31 | Mortsel Et Etablissements Geer | Pole used to suspend power lines and others |
FR951882A (en) * | 1947-07-07 | 1949-11-04 | Method of manufacturing a tube for metal construction by fitting elements | |
DE1759568A1 (en) * | 1968-05-15 | 1971-06-16 | Transnorm Foerderanlagen Und S | Beam-like component with a box-shaped hollow profile |
LU60543A1 (en) * | 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8713079U1 (en) * | 1987-09-29 | 1987-11-12 | Durlum-Leuchten Gmbh Lichttechnische Spezialfabrik, 7860 Schopfheim | Wide span beams |
EP0407998A2 (en) * | 1989-07-14 | 1991-01-16 | SAE SADELMI S.p.A. | Bidimensional truss structure, particularly support for overhead electric energy transmission lines |
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 (en) * | 1990-02-02 | 1991-08-07 | Profilcometube | Simple and double girders and posts constituted by the connection of Z-shaped profiles, and permitting in particular the realization of a frame or a bracket, for use in a building's construction |
FR2657909A1 (en) * | 1990-02-02 | 1991-08-09 | Profilcometube | SINGLE AND DOUBLE BEAMS AND POSTS, CONSISTING OF THE MEETING OF RIGHT-Z SECTION PROFILES, IN PARTICULAR FOR THE PRODUCTION OF A PORTIC OR A POTENCY FOR A BUILDING CONSTRUCTION. |
EP0819802A2 (en) * | 1993-08-19 | 1998-01-21 | Ward Building Systems Limited | Structural members |
EP0819802A3 (en) * | 1993-08-19 | 1999-04-28 | Ward Building Systems Limited | Structural members |
Also Published As
Publication number | Publication date |
---|---|
ATE62519T1 (en) | 1991-04-15 |
DE3484441D1 (en) | 1991-05-16 |
EP0177634B1 (en) | 1991-04-10 |
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