EP2000608A2 - Vertikales Strukturelement für einen Turm zum Halten von Stromkabeln und Herstellungsverfahren dafür - Google Patents

Vertikales Strukturelement für einen Turm zum Halten von Stromkabeln und Herstellungsverfahren dafür Download PDF

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Publication number
EP2000608A2
EP2000608A2 EP08157659A EP08157659A EP2000608A2 EP 2000608 A2 EP2000608 A2 EP 2000608A2 EP 08157659 A EP08157659 A EP 08157659A EP 08157659 A EP08157659 A EP 08157659A EP 2000608 A2 EP2000608 A2 EP 2000608A2
Authority
EP
European Patent Office
Prior art keywords
couple
wings
respect
wing
structural element
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Withdrawn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
EP08157659A
Other languages
English (en)
French (fr)
Other versions
EP2000608A3 (de
Inventor
Paolo Savegnago
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.)
Turres Srl
Original Assignee
Turres Srl
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 Turres Srl filed Critical Turres Srl
Publication of EP2000608A2 publication Critical patent/EP2000608A2/de
Publication of EP2000608A3 publication Critical patent/EP2000608A3/de
Withdrawn legal-status Critical Current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
    • E04C3/06—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
    • 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
    • E04H12/10—Truss-like structures
    • 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 a new structural element for towers designed to support electrical cables or the like, as well as a method of obtaining the same.
  • trestle towers are usually formed by three (for towers triangular in cross-section) or four upright elements or “angle bars” (for towers square in cross-section), that are suitably fixed together and stiffened at various levels of the tower by means of "wall cross-arms” (ledgers or braces), which are fixed between two respective upright elements typically through bolting.
  • the upright elements are usually obtained through hot-rolling of section bars and have a substantially L-shaped cross-section with an angle of about 90° (for towers square in cross-section), or an angle of 90°, subsequently reduced to 60° (for towers triangular in cross-section). This latter type of upright elements is used outside Europe.
  • the main object of the present invention is then to provide a new upright structural element for trestle towers which is suitable for ensuring definitely better performance with respect to conventional upright structural elements.
  • Another object of the present invention is to provide a new upright structural element for trestle towers which makes it possible to achieve significant savings in material with respect to upright structural elements proposed up to now.
  • an upright structural element for trestle supporting tower which comprises a section bar having a couple of walls or wings inclined with respect to one another at an angle from about 60 to 120 degrees, and characterized in that each wall or wing of said couple of walls or wings ends with at least one respective portion, each portion being inclined with respect to the relative wall or wing, and at least one portion of a wall or wing of said couple is facing towards at least one portion of the other wall or wing of said couple.
  • each portion of the structural element is inclined with respect to its respective wall or wing of a substantially perpendicular angle.
  • an upright structural element for towers supporting electrical cables or similar comprising a section bar having a couple of walls or wings inclined with respect to each other at an angle from about 60 to about 120 degrees, the upright element being substantially tapered upwards, in use.
  • an upright structural element for supporting towers triangular or squared in cross-section which comprises an section bar having a couple of walls or wings inclined with respect to each other, each wall or wing of the wall or wing couple being inclined with respect to the other at an angle from about 60° and 75° for towers triangular in cross-section and from about 90° to about 105° for towers squared in cross-section.
  • a method of obtaining of obtaining an upright structural element which comprises the following steps:
  • an upright structural element for a tapered tower e. g. including three or four upright elements for supporting electrical cables or radio-tv broadcasting instrumentation
  • a metal rolled section comprising two portions or wings 1 a and 1 b extending from opposite sides with respect to an intermediate bending or curving axial area and having a respective end or stiffening portion 1aa and 11 bb.
  • the rolled section is profiled according to three cross bending or curving axes: an intermediate main axis along the edge 2, and two secondary lateral axes at the end portions 1aa and 1bb of the wings.
  • Each end portion 1aa and 1bb preferably extends at a bending or curving angle of about 90° with respect to the wing adjacent thereto, whereas the two portions or wings 1 a and 1 b delimit an angle of about 90° therebetween.
  • the end portions 1aa and 1 bb are inclined one with respect to, and substantially facing the other.
  • FIG 3 a portion of an upright element for a tapered triangular cross-section tower is shown, which is similar to the upright element shown in Figure 2 but has a bending angle of about 60° along its intermediate axis.
  • an angle from 60° to 120°, and preferably from about 60° to about 75°, is delimited along the intermediate axis of each upright element for towers triangular in cross-section, and from about 90° to 105° for towers square in cross-section.
  • an upright structural element according to the present invention is tapered upwards, in use, thus the area delimited by each upright element decreasing from lower to upper tower portions.
  • upright elements are adopted delimiting an angle greater than 60° (for triangular cross-section towers), preferably between 60° and 75°, and greater than 90° (for square cross-section towers), preferably from 90° to 105°, between the intermediate portions 1a and 1b thereof, and in general such angle is wider the greater the taper of the upright element.
  • Such a solution can be applied both to conventional and tapered upright elements, as well as to upright elements provided with end portions 1 aa, 1 bb.
  • FIG. 4 a tower having four upright elements similar to that shown in Figure 2 is illustrated, the upright elements being stiffened by screwing respective cross bars or arms 3 thereto.
  • An upright structural element according to the present invention can be obtained through a method comprising the following steps, not necessarily in sequence:
  • the sheet is preferably obtained through laser cutting ("hot” cutting) or through water cutting (“cold” cutting) of a metal sheet.
  • the main bending axis is an axis of symmetry for the metal sheet.
  • an upright element according to the present invention ensures optimum combined bending and compressive stress performance owing to the provision of the end portions 1 aa, 1 bb.
  • each wall or wing can have more than one end portion, e. g. a first portion inclined at 45° with respect to each wall or wing and a second portion inclined at 45° with respect to the first portion, so as to obtain a total inclination of the assembly formed by the first and the second portion of about 90° with respect to each wall or wing.

Landscapes

  • 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)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Supports For Pipes And Cables (AREA)
EP08157659A 2007-06-05 2008-06-05 Vertikales Strukturelement für einen Turm zum Halten von Stromkabeln und Herstellungsverfahren dafür Withdrawn EP2000608A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVR20070079 ITVR20070079A1 (it) 2007-06-05 2007-06-05 Elemento strutturale montante per una torre di supporto di cavi elettrici o similari e procedimento per l'ottenimento dello stesso

Publications (2)

Publication Number Publication Date
EP2000608A2 true EP2000608A2 (de) 2008-12-10
EP2000608A3 EP2000608A3 (de) 2012-07-04

Family

ID=39669720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08157659A Withdrawn EP2000608A3 (de) 2007-06-05 2008-06-05 Vertikales Strukturelement für einen Turm zum Halten von Stromkabeln und Herstellungsverfahren dafür

Country Status (2)

Country Link
EP (1) EP2000608A3 (de)
IT (1) ITVR20070079A1 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE481022A (de) *
GB2378143A (en) * 2001-07-28 2003-02-05 David Thomas Weller Beams their formation and their use as a trackway

Also Published As

Publication number Publication date
ITVR20070079A1 (it) 2008-12-06
EP2000608A3 (de) 2012-07-04

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