EP0160509A2 - Verankerungshülse für Spannglieder in Betonkörpern - Google Patents

Verankerungshülse für Spannglieder in Betonkörpern Download PDF

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Publication number
EP0160509A2
EP0160509A2 EP85302883A EP85302883A EP0160509A2 EP 0160509 A2 EP0160509 A2 EP 0160509A2 EP 85302883 A EP85302883 A EP 85302883A EP 85302883 A EP85302883 A EP 85302883A EP 0160509 A2 EP0160509 A2 EP 0160509A2
Authority
EP
European Patent Office
Prior art keywords
barrel
grip
spring
head
wall
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.)
Withdrawn
Application number
EP85302883A
Other languages
English (en)
French (fr)
Other versions
EP0160509A3 (de
Inventor
David Brearley
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.)
CCL Systems Ltd
Original Assignee
CCL Systems Ltd
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 CCL Systems Ltd filed Critical CCL Systems Ltd
Publication of EP0160509A2 publication Critical patent/EP0160509A2/de
Publication of EP0160509A3 publication Critical patent/EP0160509A3/de
Withdrawn legal-status Critical Current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
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action

Definitions

  • the invention relates to an improved anchor grip of the type useful in tensioning the wires, rods or stranded elements in prestressed concrete structures, and in particular is an improvement in or modification of the anchor grip described in British patent 1018967.
  • That patent discloses an anchor grip comprising a body formed with a centre bore, a wedge device consisting of a plurality of tapered wedge elements arranged adjacent one end of the body and within the central bore to engage the wire to be gripped, a detachable plug provided at the other end of the body, a compression spring between the plug and the larger end of the wedge elements, wherein a cap member for maintaining axial alignment of the wedge elements is arranged between the spring and the larger ends of the elements, the cap comprising an annulus which is freely movable in the central bore.
  • This known anchor grip is marketed as the CCL XL enclosed grip for strand (CCL is a registered trade mark). It is a commercially successful grip but there is a drawback in that the cap is an extra item which adds to the cost and by its presence it is not easy to see whether the elongate element has been gripped within the device.
  • an anchor grip for engaging an end portion of a length of wire or the like, the grip comprising an elongate barrel containing a wedge gripping device and a spring for retaining the device in the barrel, the barrel being open at both ends, characterised in that the spring is a taper spring of sufficient length to hold the device in the barrel and is biased at one end against the head of the device and at the other end against the wall of the barrel, and in that the head of the device is visible from one end of the barrel.
  • the wall of the barrel may be formed with abutment means better to engage the end turn of the spring and that wall.
  • abutment means comprises a slot to receive the end turn of the spring.
  • the wall of the barrel in the region of the spring is sufficiently thick to allow the nose of a hydraulic jack to be abutted against that end of the grip whereby the connection of the element and the grip may be stressed.
  • the grip of Figure 1 comprises a barrel 1 having a central bore comprising a frustoconical bore portion 2 and a wider diameter cylindrical bore portion 3.
  • the grip contains a wedge device W of a known type and comprising a number (2, 3 or 4) of tapering wedge segments 4. At their wider ends 4a the segments form the head H of the device W and are held together by an 0-ring 5 received in a groove 6 in the segments.
  • a length of wire E, Figure 2 may be gripped by the grip by sliding the grip to engage clean wire to the desired location.
  • the wall of the bore portion 2 is sufficiently thick, e.g. 6 mm, to allow the nose of a hydraulic stressing jack, not shown, to be biased against it whereby the connection may be stressed.
  • a slot 8 is present in the wall of the bore part 3 and the last end turn 9 of the spring 7 is anchored in the slot 8.
  • the operator uses the grip as described in relation to the embodiment of Figure 1 and because the bore part 3 is open, he can see the engagement through the spring 7 to ensure that a proper connection has been made.
  • E, 13 mm in diameter the grip may be about 76 mm long and 38 mm in external diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP85302883A 1984-04-24 1985-04-24 Verankerungshülse für Spannglieder in Betonkörpern Withdrawn EP0160509A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8410477 1984-04-24
GB848410477A GB8410477D0 (en) 1984-04-24 1984-04-24 Anchor grip

Publications (2)

Publication Number Publication Date
EP0160509A2 true EP0160509A2 (de) 1985-11-06
EP0160509A3 EP0160509A3 (de) 1987-02-04

Family

ID=10560007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85302883A Withdrawn EP0160509A3 (de) 1984-04-24 1985-04-24 Verankerungshülse für Spannglieder in Betonkörpern

Country Status (2)

Country Link
EP (1) EP0160509A3 (de)
GB (1) GB8410477D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741885A (zh) * 2013-12-21 2014-04-23 广西科技大学 碳纤维板张拉用的夹片式锚具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078112A (en) * 1961-01-12 1963-02-19 Union Metal Mfg Co Coupling for wire strand and the like
US3374511A (en) * 1966-01-10 1968-03-26 Cable Cover Ltd Cable grip
US4059931A (en) * 1976-01-29 1977-11-29 Mongan William T Building framing system for post-tensioned modular building structures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078112A (en) * 1961-01-12 1963-02-19 Union Metal Mfg Co Coupling for wire strand and the like
US3374511A (en) * 1966-01-10 1968-03-26 Cable Cover Ltd Cable grip
US4059931A (en) * 1976-01-29 1977-11-29 Mongan William T Building framing system for post-tensioned modular building structures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741885A (zh) * 2013-12-21 2014-04-23 广西科技大学 碳纤维板张拉用的夹片式锚具

Also Published As

Publication number Publication date
EP0160509A3 (de) 1987-02-04
GB8410477D0 (en) 1984-05-31

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Effective date: 19870805

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Inventor name: BREARLEY, DAVID