EP0771593A2 - Procédé et dispositif pour découvrir et nettoyer des torons de fils d'acier - Google Patents

Procédé et dispositif pour découvrir et nettoyer des torons de fils d'acier Download PDF

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Publication number
EP0771593A2
EP0771593A2 EP96116542A EP96116542A EP0771593A2 EP 0771593 A2 EP0771593 A2 EP 0771593A2 EP 96116542 A EP96116542 A EP 96116542A EP 96116542 A EP96116542 A EP 96116542A EP 0771593 A2 EP0771593 A2 EP 0771593A2
Authority
EP
European Patent Office
Prior art keywords
strand
lance
sealing element
sheath
tubular
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
EP96116542A
Other languages
German (de)
English (en)
Other versions
EP0771593B1 (fr
EP0771593A3 (fr
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.)
DYWIDAG-SYSTEMS INTERNATIONAL GMBH
Original Assignee
Dyckerhoff and Widmann AG
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 Dyckerhoff and Widmann AG filed Critical Dyckerhoff and Widmann AG
Publication of EP0771593A2 publication Critical patent/EP0771593A2/fr
Publication of EP0771593A3 publication Critical patent/EP0771593A3/fr
Application granted granted Critical
Publication of EP0771593B1 publication Critical patent/EP0771593B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing

Definitions

  • the invention relates to a method and a device for exposing and cleaning lengthwise limited sections of strands made of steel wires, which are surrounded by an anti-corrosion compound, in particular grease, and including this is enclosed by a plastic sheath.
  • strands made of twisted steel wires usually consist of seven high-strength steel wires, of which six outer wires are grouped around a straight central wire.
  • the invention is based on the idea that in order to be able to effectively clean the channels between the outer wires and the central wire by flushing liquid under high pressure, it is necessary to tightly and sealingly enclose the strand on its outer circumference.
  • This is achieved according to the invention in that the strand, freed from the tubular sheath, is tightly enclosed in a stuffing box-like manner by a sealing element made of elastically deformable material and is slowly and steadily pulled through this sealing element under the action of a flushing liquid under high pressure.
  • a sealing element made of elastically deformable material
  • a suitable device for carrying out this method consists of a tubular lance, which has at one end a connection for a pressure line for a detergent and at the opposite end a sealing element which is applied under elastic pressure against the outer circumference of the strand and through which the strand then Can be pulled longitudinally.
  • the strand 2 consists of seven steel wires 3, namely a central wire 3 a running in the longitudinal axis of the strand, which is tightly enclosed by the six outer wires 3 b in a helical manner.
  • the strand 2 itself is surrounded by a tubular sheath 4, for example a plastic tube.
  • the gussets between the central wire 3a and the outer wires 3b form inner channels 5 and the outer gussets between the outer wires and the sheathing 4 form outer channels 6.
  • Both the inner channels 5 and the outer channels 6 are filled with an anti-corrosion compound, for example grease .
  • a strand could, for example, be used as a tension member for an earth or rock anchor, in which the section of length L is embedded as a composite section of the tension member in a compression body made of hardening material.
  • a further distance Delta 1 which is approximately 50 mm.
  • the sheathing 4 consists of a plastic tube which surrounds the strand 2 at a distance, it is readily possible to pull off the relevant section from the strand, which, however, is then still covered by the anti-corrosion compound.
  • a tubular lance is used to carry out the method according to the invention, the essential parts of which are shown in FIG. 3.
  • the lance 7 consists of several pipe sections 7a, 7b etc., which are tightly connected to one another by screw connections 8 in a manner known per se. By combining sections 7a, 7b etc. of the same or different lengths, the length of the lance 7 can be matched to the length L of the strand 2 to be treated.
  • the lance 7 has at one end a connection 9 for a detergent line; at the other end, a sealing element 10 is also connected via the screw connection 8 already described.
  • the sealing element 10 is in Fig. 5 on a larger scale and Longitudinal section shown. It consists of an inner sealing part 11 and an outer sealing part 12, which are tubular and are telescopically displaceable. Between the - outer - end of the inner sealing part 11 and a stop 13 at the - outer - end of the outer sealing part 12 there are sealing rings 14, which are placed under axial compression pressure by telescopic displacement of the inner sealing part 11 relative to the outer sealing part 12 and thus to the sealing system can be brought to a wire 2 inserted into the lance 7. To generate such a compression pressure, the outer sealing part 12 and the inner sealing part 11 are connected by a clamping screw 15, which is anchored to brackets 16 and 17 on the outer and inner sealing part 12 and 11, respectively. On a sleeve 18 surrounding the inner sealing part 11 there is an opening 19 into which a valve 20 is inserted, which can be actuated via a lever 21.
  • the section of the strand 2 freed from the sheath 4 according to FIG. 1 is first inserted through the sealing element 10 into the lance 7.
  • the length of the lance must correspond to the length L of the exposed section of the strand 2. It makes sense to slightly tighten the clamping screw 15 after the front end of the strand has been inserted into the sealing element 10.
  • the stranded wire 2 is pushed in further, most of the corrosion protection agent still adhering to it is then stripped off.
  • the clamping screw 15 is firmly tightened; as a result, the sealing rings 14 are brought into tight contact with the strand 2.
  • the lance 7 is then suspended in a container 22 which receives the rinsing liquid obtained during the rinsing.
  • a flushing line 23 is connected by means of the connection 9 provided there, which, for example, enables the interior of the lance 7 to be pressurized with flushing liquid under pressure.
  • Water, to which a suitable cleaning agent is added, is expediently used as the rinsing liquid.
  • the rinsing liquid expediently has a temperature of about 100 degrees C.
  • a cable winch 25 is expediently used to exert the tensile force (FIG. 6).
  • a wedge housing 27 is used to connect the cable winch 25 to the strand 1, in which the - likewise - exposed end of the strand 2 is anchored by a wedge 28. Via a shackle 29, the wedge housing 27 is connected to a swivel 30 which enables the strand 1 to rotate about its own axis.
  • the rope 32 of the winch 25, which sits on an abutment block 33, is then connected again via a shackle 31.
  • the lance 7 is firmly anchored at the opposite end; this can be done by a rope 34 which is attached to an eyelet 35 on a further abutment block 36 (Fig. 7).

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Cleaning In General (AREA)
  • Sealing Devices (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP96116542A 1995-10-30 1996-10-16 Procédé et dispositif pour découvrir et nettoyer des torons de fils d'acier Expired - Lifetime EP0771593B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19540392A DE19540392A1 (de) 1995-10-30 1995-10-30 Verfahren zum Freilegen und Reinigen von Bewehrungselementen in Form von Litzen aus Stahldrähten
DE19540392 1995-10-30

Publications (3)

Publication Number Publication Date
EP0771593A2 true EP0771593A2 (fr) 1997-05-07
EP0771593A3 EP0771593A3 (fr) 1998-02-18
EP0771593B1 EP0771593B1 (fr) 2001-12-12

Family

ID=7776166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116542A Expired - Lifetime EP0771593B1 (fr) 1995-10-30 1996-10-16 Procédé et dispositif pour découvrir et nettoyer des torons de fils d'acier

Country Status (3)

Country Link
EP (1) EP0771593B1 (fr)
AT (1) ATE210509T1 (fr)
DE (2) DE19540392A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926310A1 (fr) * 2008-01-14 2009-07-17 Rech S Et Realisations Remy Sa Procede et dispositif de maintenance notamment de nettoyage d'un ancrage de fil ou toron pour beton precontraint et ancrage adapte
EP3156460A1 (fr) 2015-10-13 2017-04-19 wertec GmbH Composition inhbitrice de corrosion a base d'un composé organique pour une structure métallique, en particulier des câbles de précontraintes
CN112604877A (zh) * 2020-12-11 2021-04-06 张峻豪 一种施工用钢筋防锈处理装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100564757C (zh) * 2006-09-21 2009-12-02 黄金伦 钢丝张拉终端器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646748A (en) 1970-03-24 1972-03-07 Frederic A Lang Tendons for prestressed concrete and process for making such tendons
DE4435744A1 (de) 1994-10-06 1996-04-11 Dyckerhoff & Widmann Ag Verfahren zum Reinigen und Freilegen längenmäßig begrenzter Abschnitte von Litzen aus Stahldrähten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1466677A (en) * 1974-02-19 1977-03-09 Phido Co Ltd Cable cleaning unit
WO1982001383A1 (fr) * 1980-10-14 1982-04-29 Gough Robert P Ameliorations se rapportant au nettoyage d'articles allonges et appareil pour sa mise en oeuvre
US4591390A (en) * 1981-03-25 1986-05-27 Shell Internationale Research Maatschappij B. V. Cable cleaning system
US5308406A (en) * 1992-12-14 1994-05-03 Joan Wallock Cleaning of health care instruments

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646748A (en) 1970-03-24 1972-03-07 Frederic A Lang Tendons for prestressed concrete and process for making such tendons
DE4435744A1 (de) 1994-10-06 1996-04-11 Dyckerhoff & Widmann Ag Verfahren zum Reinigen und Freilegen längenmäßig begrenzter Abschnitte von Litzen aus Stahldrähten

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926310A1 (fr) * 2008-01-14 2009-07-17 Rech S Et Realisations Remy Sa Procede et dispositif de maintenance notamment de nettoyage d'un ancrage de fil ou toron pour beton precontraint et ancrage adapte
WO2009090352A1 (fr) * 2008-01-14 2009-07-23 Recherches Et Realisations Remy Procede et dispositif de maintenance notamment de nettoyage d'un ancrage de fil ou toron pour beton precontraint et ancrage adapte
EP3156460A1 (fr) 2015-10-13 2017-04-19 wertec GmbH Composition inhbitrice de corrosion a base d'un composé organique pour une structure métallique, en particulier des câbles de précontraintes
WO2017064094A1 (fr) 2015-10-13 2017-04-20 Wertec Gmbh Agent anticorrosion à base d'huile, de cire ou de graisse pour une structure métallique, en particulier pour de l'acier d'armature
CN112604877A (zh) * 2020-12-11 2021-04-06 张峻豪 一种施工用钢筋防锈处理装置

Also Published As

Publication number Publication date
ATE210509T1 (de) 2001-12-15
DE59608429D1 (de) 2002-01-24
EP0771593B1 (fr) 2001-12-12
DE19540392A1 (de) 1997-05-07
EP0771593A3 (fr) 1998-02-18

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