EP0203857A1 - Mast, insbesondere zum Tragen von elektrischen oder telefonischen Leitungen - Google Patents

Mast, insbesondere zum Tragen von elektrischen oder telefonischen Leitungen Download PDF

Info

Publication number
EP0203857A1
EP0203857A1 EP86401076A EP86401076A EP0203857A1 EP 0203857 A1 EP0203857 A1 EP 0203857A1 EP 86401076 A EP86401076 A EP 86401076A EP 86401076 A EP86401076 A EP 86401076A EP 0203857 A1 EP0203857 A1 EP 0203857A1
Authority
EP
European Patent Office
Prior art keywords
post according
walls
post
wall
fibers
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
EP86401076A
Other languages
English (en)
French (fr)
Other versions
EP0203857B1 (de
Inventor
Pierre Bourrieres
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.)
Manufacture dAppareillage Electrique de Cahors SA
Original Assignee
Manufacture dAppareillage Electrique de Cahors SA
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 Manufacture dAppareillage Electrique de Cahors SA filed Critical Manufacture dAppareillage Electrique de Cahors SA
Priority to AT86401076T priority Critical patent/ATE58407T1/de
Publication of EP0203857A1 publication Critical patent/EP0203857A1/de
Application granted granted Critical
Publication of EP0203857B1 publication Critical patent/EP0203857B1/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

Definitions

  • the present invention relates to a pole, in particular for supporting electrical or telephone lines.
  • the object of the invention is to provide a post which can be particularly light given the load in bending-compression which it can withstand.
  • the post in particular for supporting electrical or telephone lines, comprising a hollow longitudinal interior space surrounded by a shell, is characterized in that the shell comprises a substantially rigid internal wall itself surrounded at a certain radial distance by an outer wall, connecting means being provided between the outer and inner walls, while the outer wall comprises fibers extending in a substantially tangential direction forming an angle with a longitudinal axis of the post.
  • the connecting means ensure that the two walls cannot deform independently of one another, so that the shell locally has, in each sector of its periphery, a relatively large moment of inertia.
  • the weakness of the local moment of inertia which, despite the large value of the total moment of inertia, allows the known post to bend under relatively low loads.
  • the substantially tangential fibers forming an angle with the longitudinal axis prevent the external wall from bursting, in particular when the post is working in torsion (twisting).
  • the post shown in FIG. 1 comprises a cylindrical shell 1, of circular profile, surrounding a longitudinal internal hollow space 2.
  • the lower end of the post is planted, that is to say embedded, in the ground 3.
  • This kind of pole carries for example telephone or electric lines. It thus supports its own weight, the weight of the lines, and horizontal forces due for example to the wind or to the mechanical tension in the lines when they follow a non-rectilinear path in the horizontal plane. This results in horizontal forces F1 applied to the pole in the vicinity of its upper end, and vertical forces Fh generally spaced from the axis of the pole.
  • This type of loading, in flexion-compression, tends very strongly to make the post bend just above its recess.
  • the shell 1 of the post according to the invention com takes a substantially rigid inner wall 4 adjacent to the space 2 and an outer wall 6 which surrounds the inner wall 4 at a certain radial distance from the latter.
  • the two walls 4, 6 are connected by a connecting means 7 which adheres firmly to each of them and consequently prevents one from deforming independently of the other.
  • the connecting means 7 is a filling material such as foam or felt.
  • each of the walls 4 and 6 is made of plastic material containing reinforcing fibers extending in the longitudinal direction of the post.
  • the walls 4 and 6 are obtained by the pultrusion process, that is to say a process of the extrusion type in which the product by the reinforcing fibers is pulled out of the extruder to keep the reinforcing fibers their orientation during extrusion.
  • the outer wall 6 contains fibers arranged in any order 11, some therefore being oriented in a substantially tangential direction and forming an angle with the longitudinal axis 12 (Figure 1) of the post.
  • some of the fibers 11 extend in a substantially circumferential direction.
  • the two walls 4 and 6 are made in one piece with the connecting means 7. It is indeed envisaged according to the invention to form a felt tube in the pultrusion machine, to guide this felt tube in the axis of the orifice of the pultrusion machine, and to carry out the pultrusion by pulling on the assembly formed by the two walls 4 and 6 between which the felt tube 7 is interposed. This gives very good adhesion. between each face of the felt tube and the adjacent wall 4 or 6 because the plastic material permeates the surface of the felt during extrusion.
  • the longitudinal fibers are guided by coaxial layers to be assigned to one or the other wall, and even to be distributed in the thickness of each wall. It is therefore possible to selectively introduce into the outer wall 6, the fibers in any order 11, by placing them between the longitudinal fibers intended for the outer wall.
  • the connecting means 7 is a foam
  • the two walls 4 and 6 can be produced independently of one another, then position the wall 4 in the wall 6 and inject the foam between the two walls.
  • the foam will be chosen for its qualities of adhesion to the plastic of the walls 4 and 6 and of good resistance to shear stresses.
  • the inner wall 4 and the connecting means 7 are unchanged.
  • the outer wall 6 is constituted by a filament winding produced in the circumferential direction around the connecting means 7.
  • the filament winding consists in winding on a body of multi-fiber wicks impregnated with resin.
  • the connecting means 7 are constituted by bridges 8 connecting the two walls 4, 6.
  • the bridges 8 are ribs extending axially over the entire length of the post.
  • the two walls 4 and 6 are integral with the ribs 8.
  • the whole is made of plastic reinforced with fibers extending in the longitudinal direction of the post. This one-piece structure can be obtained in a single operation by pultrusion.
  • the outer wall Q also contains, substantially at mid-thickness and over its entire periphery, a fiberglass fabric 13. Due to its nature of fabric, the fiber fabric 13 necessarily comprises fibers extending tangentially forming an angle with the axis of the post. The tissue 13 is introduced into the extruder, by positioning relative to the longitudinal fibers.
  • the internal wall 4 is made in one piece with the ribs 8, of plastic material reinforced with longitudinal fibers, the whole obtained by pultrusion as in FIGS. 6 and 7.
  • the external wall 6 is constituted by a filament winding bearing on the tops of the ribs 8.
  • the external wall 6 has a polygonal profile whose vertices coincide with the tops of the ribs 8.
  • the walls 4, 6 can be extremely thin and the connecting means 7 very light, either because of their low density (felt or foam), or because of the hollows left between them (ribs 8). But in all cases, the local moment of inertia of the beam is considerably increased.
  • local moment of inertia we mean the moment of inertia of part of the circumference of the profile of the beam, for example the part enclosed in the rectangle 9 in FIG. 3. It is more precisely the moment of inertia around the axis 11 of greatest weakness which is considered.
  • moment of inertia of a part of the profile we designate the moment of inertia of this part independently of the support which can be given to it by the rest of the profile.
  • the moment of inertia of the profile part such as 9 around the axis 11 is much greater than the moment of inertia of a corresponding part of a single-walled tube of equivalent weight. Thanks to this increase in the local moment of inertia at each point of the periphery of the profile, the initial deformation which is necessary in the compressed region of a beam cannot occur for the buckling to take place.
  • the invention can be implemented with walls 4, 6 produced by a process other than pultrusion.
  • a material of the felt or foam type can be provided in the circumferential spaces between the ribs 8.
  • the tangential fibers could be made with the fabric of Figures 6 and 7.
  • the fibers in any order of Figures 1 to 3 could be used to make the tangential fibers of the embodiment according to Figures 6 and 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Insulated Conductors (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Moulding By Coating Moulds (AREA)
  • Control Of El Displays (AREA)
  • Refuse-Collection Vehicles (AREA)
  • Waveguide Aerials (AREA)
  • Laminated Bodies (AREA)
  • Road Signs Or Road Markings (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Telephone Function (AREA)
  • Details Of Indoor Wiring (AREA)
  • Telephone Set Structure (AREA)
  • Communication Cables (AREA)
EP86401076A 1985-05-28 1986-05-22 Mast, insbesondere zum Tragen von elektrischen oder telefonischen Leitungen Expired - Lifetime EP0203857B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401076T ATE58407T1 (de) 1985-05-28 1986-05-22 Mast, insbesondere zum tragen von elektrischen oder telefonischen leitungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8507953 1985-05-28
FR8507953A FR2582706B1 (fr) 1985-05-28 1985-05-28 Poteau, notamment pour supporter des lignes electriques ou telephoniques

Publications (2)

Publication Number Publication Date
EP0203857A1 true EP0203857A1 (de) 1986-12-03
EP0203857B1 EP0203857B1 (de) 1990-11-14

Family

ID=9319592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401076A Expired - Lifetime EP0203857B1 (de) 1985-05-28 1986-05-22 Mast, insbesondere zum Tragen von elektrischen oder telefonischen Leitungen

Country Status (9)

Country Link
EP (1) EP0203857B1 (de)
JP (1) JPS61277780A (de)
CN (1) CN86103634A (de)
AT (1) ATE58407T1 (de)
DE (2) DE3675581D1 (de)
ES (1) ES296792Y (de)
FI (1) FI862237A (de)
FR (1) FR2582706B1 (de)
NO (1) NO162877C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016838A1 (en) * 1993-12-17 1995-06-22 Scaffold Connection Corporation Scaffold system
FR2714409A1 (fr) * 1993-12-23 1995-06-30 Cogidev Structure porteuse pouvant être utilisée comme poteau ou poutre.
WO1999047770A1 (en) * 1998-03-19 1999-09-23 Fournier Paul W Utility pole mounting structure
WO2006005323A1 (de) * 2004-07-09 2006-01-19 Krupp Stahlbau Hannover Gmbh Rohrförmige struktur und verfahren zu ihrer errichtung
WO2009009425A2 (en) * 2007-07-09 2009-01-15 Scott Ryan Support pole structure and method of manufacture
US8206531B2 (en) * 2004-06-04 2012-06-26 Epsilon Composite Method for producing a highly rigid composite material roller
GB2491854A (en) * 2011-06-14 2012-12-19 Stephen Howard A post containing loose material for limiting collision damage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8192572B2 (en) * 2008-04-25 2012-06-05 General Electric Company Composite wind turbine tower and a method for fabricating same
CN102705180A (zh) * 2012-06-25 2012-10-03 济南轨道交通装备有限责任公司 一种复合材料风电塔筒
CN104240771B (zh) * 2014-10-11 2016-08-31 安吉安宁生物科技有限公司 一种杀虫灯的抗灾害支架结构
NO20160271A1 (no) * 2016-02-16 2016-11-04 Comrod As Anordning og fremgangsmåte for innfesting og oppretting av en komposittmast.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812414A (en) * 1954-12-24 1959-04-22 Gar Wood Ind Inc Supporting members such as telephone poles
US4007075A (en) * 1973-12-10 1977-02-08 Cascade Pole Company Method of making a fiberglass pole
GB2074213A (en) * 1980-04-17 1981-10-28 Hepworth Plastics Ltd Poles and posts
DE3242161A1 (de) * 1982-11-13 1984-05-17 Hans 8100 Garmisch-Partenkirchen Langmatz Wartungsfreier kunststoffmast fuer leuchten, verkehrsampeln, verkehrsschilder und dgl.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812414A (en) * 1954-12-24 1959-04-22 Gar Wood Ind Inc Supporting members such as telephone poles
US4007075A (en) * 1973-12-10 1977-02-08 Cascade Pole Company Method of making a fiberglass pole
GB2074213A (en) * 1980-04-17 1981-10-28 Hepworth Plastics Ltd Poles and posts
DE3242161A1 (de) * 1982-11-13 1984-05-17 Hans 8100 Garmisch-Partenkirchen Langmatz Wartungsfreier kunststoffmast fuer leuchten, verkehrsampeln, verkehrsschilder und dgl.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016838A1 (en) * 1993-12-17 1995-06-22 Scaffold Connection Corporation Scaffold system
US5560730A (en) * 1993-12-17 1996-10-01 Scaffold Connection Corporation Scaffold system
FR2714409A1 (fr) * 1993-12-23 1995-06-30 Cogidev Structure porteuse pouvant être utilisée comme poteau ou poutre.
WO1995018277A1 (fr) * 1993-12-23 1995-07-06 Compagnie Generale D'innovation Et De Developpement Cogidev Structure porteuse pouvant etre utilisee comme poteau ou poutre
WO1999047770A1 (en) * 1998-03-19 1999-09-23 Fournier Paul W Utility pole mounting structure
US6167673B1 (en) 1998-03-19 2001-01-02 Paul W. Fournier Utility pole
US8206531B2 (en) * 2004-06-04 2012-06-26 Epsilon Composite Method for producing a highly rigid composite material roller
WO2006005323A1 (de) * 2004-07-09 2006-01-19 Krupp Stahlbau Hannover Gmbh Rohrförmige struktur und verfahren zu ihrer errichtung
WO2009009425A2 (en) * 2007-07-09 2009-01-15 Scott Ryan Support pole structure and method of manufacture
WO2009009425A3 (en) * 2007-07-09 2009-07-30 Scott Ryan Support pole structure and method of manufacture
GB2491854A (en) * 2011-06-14 2012-12-19 Stephen Howard A post containing loose material for limiting collision damage

Also Published As

Publication number Publication date
NO862037L (no) 1986-12-01
DE3675581D1 (de) 1990-12-20
ES296792Y (es) 1988-09-16
FR2582706A1 (fr) 1986-12-05
CN86103634A (zh) 1986-11-26
NO162877C (no) 1990-02-28
JPS61277780A (ja) 1986-12-08
ES296792U (es) 1988-01-16
FI862237A0 (fi) 1986-05-27
ATE58407T1 (de) 1990-11-15
FR2582706B1 (fr) 1989-09-01
NO162877B (no) 1989-11-20
FI862237A (fi) 1986-11-29
EP0203857B1 (de) 1990-11-14
DE203857T1 (de) 1987-03-19

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