EP0095413B1 - Perfectionnements aux gaines de précontrainte et à leurs procédés de fabrication - Google Patents

Perfectionnements aux gaines de précontrainte et à leurs procédés de fabrication Download PDF

Info

Publication number
EP0095413B1
EP0095413B1 EP83400993A EP83400993A EP0095413B1 EP 0095413 B1 EP0095413 B1 EP 0095413B1 EP 83400993 A EP83400993 A EP 83400993A EP 83400993 A EP83400993 A EP 83400993A EP 0095413 B1 EP0095413 B1 EP 0095413B1
Authority
EP
European Patent Office
Prior art keywords
metal strip
duct
prestressing
cables
sheath
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.)
Expired
Application number
EP83400993A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0095413A3 (en
EP0095413A2 (fr
Inventor
Pierre Jartoux
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.)
Freyssinet International STUP SA
Original Assignee
Freyssinet International STUP 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 Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Priority to AT83400993T priority Critical patent/ATE19280T1/de
Publication of EP0095413A2 publication Critical patent/EP0095413A2/fr
Publication of EP0095413A3 publication Critical patent/EP0095413A3/fr
Application granted granted Critical
Publication of EP0095413B1 publication Critical patent/EP0095413B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/10—Ducts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/126—Supply, or operations combined with supply, of strip material

Definitions

  • the invention relates to metal sheaths intended to be embedded in concrete structures and to receive the prestressing cables of these structures, cables which are put in tension with a bearing on said structures at the ends of said sheaths.
  • the preliminary phosphating and soaping treatments in question are hardly applicable to interior surfaces of tubes or sheaths.
  • the invention is essentially characterized in that the said phosphating and soaping treatments, known per se for the external surfaces of wire to be drawn, are applied to at least one of the two faces of such a strip, after which coils this strip in a helix so as to form a sheath whose face treated above constitutes the inner face.
  • the invention includes, apart from this main arrangement, certain other arrangements which are preferably used at the same time and which will be more explicitly discussed below.
  • a mild steel strip 1 is used, deformed according to longitudinal corrugations, that is to say having a corrugated cross section with ridges 2 and hollow 3.
  • At least the face, of the strip 1, intended to become the inner face of the sheath, is subjected to a chemical treatment known in itself leading to the intimate bonding, on this face, of a phosphate layer externally coated with a veil of gelled soap.
  • the above phosphating bath could be an aqueous solution at 6% by volume of the liquid distributed by the French Company of Industrial Products (CFPI) under the name Thermogranodine 63, the soap then being itself constituted by an aqueous solution of the powder distributed by said company CFPI under the name Prolub.
  • CFPI French Company of Industrial Products
  • This coating 4 is recognizable by its matt state, its light gray color and its creamy feel, pronounced of that of Marseille soap.
  • This strip is then wound around a helix so as to form a tubular sheath 5 of which said treated face constitutes the internal face.
  • This winding is carried out with lateral overlapping of the contiguous turns of the propeller so that the ridges 2 form external helical ribs and the hollows 3, helical grooves each connecting two of these ribs.
  • the sheath 5 thus obtained is easy to bend according to the needs of the prestress.
  • This cable 7 is preferably constituted, as illustrated, by a plurality of wires or strands 8 wound helically around another wire 9 constituting a central core.
  • the volume inside the sheath between the cables and the inner surface of this sheath is filled with an injected grout or a protective grease (not shown) in the manner usual.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Ropes Or Cables (AREA)
  • Insulated Conductors (AREA)
  • Duct Arrangements (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP83400993A 1982-05-21 1983-05-17 Perfectionnements aux gaines de précontrainte et à leurs procédés de fabrication Expired EP0095413B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400993T ATE19280T1 (de) 1982-05-21 1983-05-17 Vorspannhuellrohr und dessen herstellungsverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8208902A FR2527246A1 (fr) 1982-05-21 1982-05-21 Perfectionnements aux gaines de precontrainte et a leurs procedes de fabrication
FR8208902 1982-05-21

Publications (3)

Publication Number Publication Date
EP0095413A2 EP0095413A2 (fr) 1983-11-30
EP0095413A3 EP0095413A3 (en) 1984-09-12
EP0095413B1 true EP0095413B1 (fr) 1986-04-16

Family

ID=9274243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400993A Expired EP0095413B1 (fr) 1982-05-21 1983-05-17 Perfectionnements aux gaines de précontrainte et à leurs procédés de fabrication

Country Status (6)

Country Link
US (1) US4606380A (enrdf_load_stackoverflow)
EP (1) EP0095413B1 (enrdf_load_stackoverflow)
AT (1) ATE19280T1 (enrdf_load_stackoverflow)
DE (1) DE3363027D1 (enrdf_load_stackoverflow)
ES (1) ES279984Y (enrdf_load_stackoverflow)
FR (1) FR2527246A1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606803B1 (fr) * 1986-11-14 1989-03-03 Freyssinet Int Stup Perfectionnements aux supports oscillants pour charges lourdes
US5087153A (en) 1989-08-23 1992-02-11 Arnco Corporation Internally spiraled duct and method of installation
CH689307A5 (de) * 1995-04-13 1999-02-15 Cement Intellectual Property L Verfahren sowohl zur Korrosionsinhibierung, wie auch zur Verstärkung der Verbundeigenschaften von Armierungsmetallen.
GB2358880A (en) * 2000-01-12 2001-08-08 Stuart Ian Jackman Method for reinforcing material
US7559324B2 (en) 2000-06-21 2009-07-14 Fisher & Paykel Healthcare Limited Conduit with heated wick
AU2003244171B2 (en) * 2002-09-09 2007-11-15 Fisher & Paykel Healthcare Limited Limb for Breathing Circuit
US20080128041A1 (en) * 2006-12-04 2008-06-05 The Lamson & Sessions Co. Duct having silicone inner striping and composition for lubricious stripe coating
FR2968681B1 (fr) * 2010-12-08 2015-05-29 Soletanche Freyssinet Dispositif de deviation d'un cable de structure tel qu'un hauban, et ouvrage ainsi equipe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH99464A (fr) * 1921-11-08 1923-06-16 Sechehaye Emile Armature métallique pour corps en matière agglomérée.
DE1103108B (de) * 1955-11-10 1961-03-23 Dr Stefan Klinghoffer Verfahren und Vorrichtung zur Vorbehandlung von Draehten zum Zwecke des Ziehens
US3015969A (en) * 1957-03-15 1962-01-09 American Chain & Cable Co Push-pull cable
US3114987A (en) * 1959-06-11 1963-12-24 Span Tendons Ltd Cables for prestressing concrete
US3359822A (en) * 1965-12-13 1967-12-26 John B Hurlow Push-pull cable with plastic lined sheath
FR1587229A (enrdf_load_stackoverflow) * 1968-10-25 1970-03-13
FR2118861B3 (enrdf_load_stackoverflow) * 1970-12-24 1973-08-10 Soc Gen Entreprises
DE2161105A1 (de) * 1971-12-09 1973-06-20 Hoesch Maschinenfabrik Ag Verfahren und einrichtung zum herstellen von schraubennahtrohren aus metall- oder kunststoffband bzw. blech mit und ohne beschichtung oder plattierung

Also Published As

Publication number Publication date
ES279984Y (es) 1985-06-01
DE3363027D1 (en) 1986-05-22
EP0095413A3 (en) 1984-09-12
US4606380A (en) 1986-08-19
ES279984U (es) 1984-11-16
FR2527246A1 (fr) 1983-11-25
FR2527246B1 (enrdf_load_stackoverflow) 1985-01-04
ATE19280T1 (de) 1986-05-15
EP0095413A2 (fr) 1983-11-30

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