EP0201418B1 - Perfectionnements aux dispositifs d'ancrage pour câbles tendus - Google Patents

Perfectionnements aux dispositifs d'ancrage pour câbles tendus Download PDF

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Publication number
EP0201418B1
EP0201418B1 EP86400952A EP86400952A EP0201418B1 EP 0201418 B1 EP0201418 B1 EP 0201418B1 EP 86400952 A EP86400952 A EP 86400952A EP 86400952 A EP86400952 A EP 86400952A EP 0201418 B1 EP0201418 B1 EP 0201418B1
Authority
EP
European Patent Office
Prior art keywords
bearing surface
shoulder piece
cable
head
jack
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
EP86400952A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0201418A1 (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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9318945&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0201418(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Priority to AT86400952T priority Critical patent/ATE35707T1/de
Publication of EP0201418A1 publication Critical patent/EP0201418A1/fr
Application granted granted Critical
Publication of EP0201418B1 publication Critical patent/EP0201418B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • E04G21/121—Construction of stressing jacks
    • 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
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • 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
    • E04C5/12—Anchoring devices
    • E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations

Definitions

  • the invention relates to anchoring devices for stretched cables and more particularly those of these devices, for which relative variations in inclination are likely to appear between the device and the cable when the latter is loaded.
  • Such cables are, for example, the cables making up the stay cables for the suspension of bridges: the overloads applied to these bridges after the installation of their stay cables can indeed slightly deform their suspended decks and therefore the inclinations of the cables relative to their devices. anchoring or vice versa.
  • the cable traction cylinder is then itself mounted on the ball joint around this cable.
  • the invention aims, above all, to make possible such variations under load.
  • the anchoring devices of the type in question according to the invention also comprise a traction cylinder arranged around the anchoring head and a convex spherical bearing secured to this head and capable of interacting with an annular bearing of the plate, and they are essentially characterized in that they comprise an annular shoulder attached to the free end of the anchoring head and delimited on the side of the plate by a second convex spherical bearing concentric with the first and in that the cylinder is interposed between the plate and the shoulder and has a concave spherical bearing capable of interacting with the convex spherical bearing of the shoulder so as to make possible a sliding under load of this shoulder relative to the cylinder.
  • the invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
  • Figure 1 of this drawing shows schematically in axial section a cable anchoring device established in accordance with the invention after tilting the cable under load and before correcting the orientation of the anchoring head.
  • Figures 2 and 3 show substantially the same device respectively during the correction and after it.
  • the cable to be stretched 1 which is for example intended for the guying of a bridge, is terminated by a rigid head 2 externally threaded.
  • this head 2 that is to be anchored on a solid 3, made of metal or reinforced concrete, hollowed out by a hole 4 of axis X suitable for delivering passage to the cable 1, or more precisely on a plate annular metal support 5 attached to this solid 3 and hollowed out like this.
  • said head 2 or “anchoring head”, is surrounded by a nut 6 screwed onto it and itself having a convex spherical bearing 7 suitable for resting on an appropriate annular bearing 8 of the plate 5, carried coaxial with hole 4 and generally frustoconical.
  • the two spherical surfaces 10 and 14 have the same radius of curvature and at least one of these surfaces is made of a hard and non-deformable material. They are machined and treated in such a way that they can easily slide against each other even under load and so that the axis of the head 2 can be aligned rigorously with that of the cable 1 harnessed on this same head when this cable is heavily loaded.
  • liquid lubricant such as engine oil
  • This lubricant is discharged to the interface concerned under a high pressure (for example between 500 to 1000 bars) through pipes 16 and distribution grooves 17, then recovered in the state of leakage on the edges of the surface.
  • a high pressure for example between 500 to 1000 bars
  • the shoulder 9 is preferably removably mounted on the head 2, for example by screwing, so that it can be recovered just like the jack 11 with a view to successively correcting the orientation of separate heads 2.
  • the head 2 of this cable, anchored on the block 3 is coaxial with the hole 4 of axis X and the nut 6 is oriented coaxially with this hole with its scope 7 resting on the scope 8 of the plate 5.
  • the Y axis of the cable 1 occupies an inclined position at an angle a with respect to the X axis ( Figure 1).
  • the interface between the spherical bearings 10 and 14 is lubricated in the manner specified above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Bridges Or Land Bridges (AREA)
  • Cable Accessories (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP86400952A 1985-05-03 1986-04-30 Perfectionnements aux dispositifs d'ancrage pour câbles tendus Expired EP0201418B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400952T ATE35707T1 (de) 1985-05-03 1986-04-30 Vorrichtung zum verankern von angespannten seilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8506773 1985-05-03
FR8506773A FR2581409B1 (fr) 1985-05-03 1985-05-03 Perfectionnements aux dispositifs d'ancrage pour cables tendus

Publications (2)

Publication Number Publication Date
EP0201418A1 EP0201418A1 (fr) 1986-11-12
EP0201418B1 true EP0201418B1 (fr) 1988-07-13

Family

ID=9318945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400952A Expired EP0201418B1 (fr) 1985-05-03 1986-04-30 Perfectionnements aux dispositifs d'ancrage pour câbles tendus

Country Status (7)

Country Link
EP (1) EP0201418B1 (da)
AT (1) ATE35707T1 (da)
DE (1) DE3660384D1 (da)
DK (1) DK159623C (da)
ES (1) ES296779Y (da)
FR (1) FR2581409B1 (da)
NO (1) NO165255C (da)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664928B1 (fr) * 1990-07-23 1992-11-13 Leguern Jacques Batiment de stockage de produits en vrac et procede de fabrication de ce batiment.
DE9409574U1 (de) * 1993-07-01 1994-08-18 Zehnder Alex Tragseillagerung
FR2730511B1 (fr) * 1995-02-13 1997-04-11 Mure Ets Dispositif d'ancrage mutuel de deux parois
GB0015642D0 (en) * 2000-06-27 2000-08-16 Crawford Moya Apparatus
WO2002016710A2 (de) * 2000-08-16 2002-02-28 Josef Scherer Vorrichtung zum spannen von verstärkungselementen
ITMI20102112A1 (it) * 2010-11-15 2012-05-16 Ttm Tension Technology S R L Gruppo di supporto per l'installazione e il fissaggio di tiranti inclinati

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1409162A1 (de) * 1958-05-02 1968-11-14 Vorspann Technik Gmbh Verfahren und Vorrichtung zum Verankern von starren Staeben als Vorspannglieder von Baukoerpern aus Beton oder anderen Massen
FR2507232A1 (fr) * 1981-06-09 1982-12-10 Freyssinet Int Stup Dispositif de mise en tension de barres de precontrainte et de determination de cette tension

Also Published As

Publication number Publication date
FR2581409B1 (fr) 1987-07-10
DK159623B (da) 1990-11-05
DK204286A (da) 1986-11-04
ES296779U (es) 1988-01-16
DE3660384D1 (en) 1988-08-18
NO861714L (no) 1986-11-04
FR2581409A1 (fr) 1986-11-07
EP0201418A1 (fr) 1986-11-12
DK159623C (da) 1991-04-15
ES296779Y (es) 1988-09-16
ATE35707T1 (de) 1988-07-15
NO165255B (no) 1990-10-08
DK204286D0 (da) 1986-05-02
NO165255C (no) 1991-01-16

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