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WO1993003241A1 - Poteau d'acier a revetement resistant a la corrosion - Google Patents

Poteau d'acier a revetement resistant a la corrosion Download PDF

Info

Publication number
WO1993003241A1
WO1993003241A1 PCT/AU1992/000395 AU9200395W WO9303241A1 WO 1993003241 A1 WO1993003241 A1 WO 1993003241A1 AU 9200395 W AU9200395 W AU 9200395W WO 9303241 A1 WO9303241 A1 WO 9303241A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
embedded
mould
ground
mortar
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.)
Ceased
Application number
PCT/AU1992/000395
Other languages
English (en)
Inventor
Kenneth Michael Hume
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1993003241A1 publication Critical patent/WO1993003241A1/fr
Priority to GB9401605A priority Critical patent/GB2273945A/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0023—Lining the inner wall of hollow objects, e.g. pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/30—Centrifugal moulding
    • 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
    • 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
    • E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
    • 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
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2292—Holders used for protection, repair or reinforcement of the post or pole

Definitions

  • the invention relates to a method of producing steel poles for use for example as a power pole and particularly relates to the method of producing a pole butt which is resistant to corrosion when the pole is embedded in the ground. Problems exist with all kinds of poles particularly steel poles in producing a ground corrosion resistant butt portion particularly those used in highly corrosive soil areas such as in arid regions of Australia and elsewhere.
  • steel poles have been constructed from heavy gauge steel in order to resist locally buckling near ground level when the pole is subjected to service loads.
  • This invention enables use of a thinner steel shell than has hitherto been possible without loss of strength, whilst being extremely resistant to corrosive effects.
  • a process of treating a tubular pole member destined to be planted in the ground comprising the steps of applying a cement or like mortar or grout to the inner and outer surfaces of at least that part of the tubular member to be embedded in the ground.
  • the grout/mortar is applied in a spinning operation.
  • the tubular member includes a series of through apertures allowing coating of both surfaces of the member with the apertures transporting the grout mortar from one surface to the other surface of the pole structure.
  • the embedded portion of the pole member is supported in a casing which at least initially forms a mould during application of mortar/grout to the surfaces of the pole, and may also provide an outer shield against strong corrosive or termite attack.
  • a process of producing a steel power pole including steps of applying a dense cement mortar layer to the inside surface of a power pole shell and applying a layer of dense cement mortar to the outer surface of the pole shell at least in the area to be embedded in the ground; optionally, the pole shell is formed with an outer casing of dense cement on and adjacent to the embedded section of the steel pole, the mould casing around the embedded portion of the steel pole being of vitrified clay or the like material, to contain the outer casing of cement which will resist corrosive attack attack and increase the structural strength of said pole.
  • Figure 2 shows schematically a spinning apparatus for applying cement mortar/grout to the pole interior and exterior portions
  • Figure 3 shows a typical mould construction used during said spinning operation.
  • tubular steel pole 10 is of tapered construction and includes a series of apertures 11 therein.
  • the pole butt is positioned to concentrically within an outer casing 12.
  • the casing may be of vitrified earthenware material, strong plastic such as ABS, galvanised steel or non-corrosive metal alloy, or cardboard or the like material as will be described in greater detail later.
  • the dense cement mortar layer is applied during spinning of the pole and butt casing being pumped through pipe 20.
  • the cement mortar is transported through holes 11 to coat both pipe surfaces in the butt region and fill the mould formed by the casing 12 and closure pieces 14, 15 shown in figure 3.
  • the pole and casing arrangement is mounted before spinning on a spinning apparatus which is known per se having a motor 30 driving drive belts 31 through pulleys 32 to spin the pipe about its longitudinal axis whilst cement mortar is pumped through pipe 20.
  • a spinning apparatus which is known per se having a motor 30 driving drive belts 31 through pulleys 32 to spin the pipe about its longitudinal axis whilst cement mortar is pumped through pipe 20.
  • the outer casing and butt portion of the steel pole is closed in to form a mould construction using end caps 14 and 15 clamped to the outer casing.
  • the method of manufacture of the improved pole is simple and represents an advancement over the previously used technique of applying cement mortar to the inside steel pipes by spinning.
  • the outer casing is positioned accurately during spinning by the clamp pieces 14 and 15 so that cement mortar is confined within the annular space on both sides of the steel pipe and within the confines of the outer casing represented generally as 17.
  • the outer casing 12 should be made of strong anti-corrosive material such as vitrified clay where the pole is destined embedded in aggressive ground conditions such as in some arid areas in Australia or in termite infested area if the pole is timber.
  • non-load supporting material such as a cardboard casing may be used to serve simply as an outer mould during the spinning operation leaving the outer surface of the cement mortar as the corrosion resistant material.
  • a dense cement mortar lining in the pole serves to stiffen the pole structure thereby eliminating or at least substantially reducing the chance of buckling in the pole under load and also to significantly increase the strength of the pole by forming a composite section with the steel shell. It is contemplated that the cost of providing a composite pole of the present construction will be more than off-set by the reduced cost of being able to use a thinner gauge shell and by the savings in surface protection of the embedded section of the pole.
  • the tapered pole construction is usually made up of several modules of pipe which are telescoped together and in a preferred form of the invention the pole portions destined to be used above ground are also coated on the inside surface with the cement grout to provide added strength of the buckling of the pole and protection against corrosion that may result from build up of condensation and other moisture that may occur over time on the internal surface of the pole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piles And Underground Anchors (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

L'invention se rapporte à un revêtement résistant à la corrosion pour un poteau d'acier (10) devant être planté dans le sol, et convient particulièrement à des régions dont le sol est hautement corrosif telles que des régions arides, par exemple. L'invention se rapporte aussi à un procédé consistant à appliquer une couche de mortier au ciment (11) aux enveloppes interne et externe d'une base de poteau, tout au moins dans la zone devant être plantée dans la terre. La chemise (12) du moule, autour de la partie enterrée du poteau se compose de grés-cérame vitrififé ou d'un matériau analogue et confine la chemise de ciment externe pour que celle-ci résiste à l'attaque de la corrosion et pour augmenter la solidité du poteau.
PCT/AU1992/000395 1991-08-02 1992-07-30 Poteau d'acier a revetement resistant a la corrosion Ceased WO1993003241A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9401605A GB2273945A (en) 1991-08-02 1994-01-27 Corrosion resistant coated steel pole

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK7586 1991-08-02
AUPK758691 1991-08-02

Publications (1)

Publication Number Publication Date
WO1993003241A1 true WO1993003241A1 (fr) 1993-02-18

Family

ID=3775602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1992/000395 Ceased WO1993003241A1 (fr) 1991-08-02 1992-07-30 Poteau d'acier a revetement resistant a la corrosion

Country Status (4)

Country Link
FR (1) FR2679937A1 (fr)
GB (1) GB2273945A (fr)
TW (1) TW201808B (fr)
WO (1) WO1993003241A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004007874A1 (fr) * 2002-07-17 2004-01-22 Musco Corporation Manchon ou protecteur de poteau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111844425A (zh) * 2020-06-08 2020-10-30 繁昌县东源电力器材制造有限公司 一种锥形水泥电杆生产用模具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1917534A (en) * 1934-09-05 1927-03-28 Pfistershammer Josef Improvements in or relating to built-up tubular posts
AU163126A (en) * 1926-04-29 1927-06-14 William Watson Charles Improvements inthe process of and means forthe centrifugal production of structures of plastic material
AU2419135A (en) * 1935-08-28 1936-09-03 James Hardie & Co. Limited Improvements relating tothe coating of metal pipes
AU345240A (en) * 1940-09-20 1941-10-02 Di-Met Proprietary Limited Improvements in and connected with pipes andother articles having cementitious coatings
AU4563772A (en) * 1972-08-16 1974-02-21 Ameron, Inc Method of sealing mortar-coated pipe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB396090A (en) * 1932-01-21 1933-07-21 Michael Ratcliffe Barnett Improvements in the manufacture of incorrodible reinforced pipes or tubes
FR756895A (fr) * 1932-09-14 1933-12-16 Poteau perfectionné
AT151477B (de) * 1932-12-15 1937-11-10 Josef Ing Pfistershammer Auskegeligen, dünnwandigen Blechrohrstücken zusammengesetzter rohrförmiger Mast, insbesondere Freileitungsmast.
FR884803A (fr) * 1941-08-09 1943-08-27 Mât d'acier pour installations extérieures
DE855072C (de) * 1950-06-10 1952-11-10 Franz Ahlen Verfahren und Stahlrohrumhuellung zum Herstellen von Schleuderbetonsaeulen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU163126A (en) * 1926-04-29 1927-06-14 William Watson Charles Improvements inthe process of and means forthe centrifugal production of structures of plastic material
AU1917534A (en) * 1934-09-05 1927-03-28 Pfistershammer Josef Improvements in or relating to built-up tubular posts
AU2419135A (en) * 1935-08-28 1936-09-03 James Hardie & Co. Limited Improvements relating tothe coating of metal pipes
AU345240A (en) * 1940-09-20 1941-10-02 Di-Met Proprietary Limited Improvements in and connected with pipes andother articles having cementitious coatings
AU898161A (en) * 1960-09-15 1963-05-02 The Hume Pipe Company (South African Ltd Casting of moulding of material by centrifugal force
AU4563772A (en) * 1972-08-16 1974-02-21 Ameron, Inc Method of sealing mortar-coated pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004007874A1 (fr) * 2002-07-17 2004-01-22 Musco Corporation Manchon ou protecteur de poteau
US7607276B2 (en) 2002-07-17 2009-10-27 Musco Corporation Pole cover or sleeve

Also Published As

Publication number Publication date
GB2273945A (en) 1994-07-06
FR2679937A1 (fr) 1993-02-05
GB9401605D0 (en) 1994-04-13
TW201808B (fr) 1993-03-11

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