WO2005100800A1 - Outil de disposition uniforme pour cale d'ancrage - Google Patents

Outil de disposition uniforme pour cale d'ancrage Download PDF

Info

Publication number
WO2005100800A1
WO2005100800A1 PCT/JP2004/005045 JP2004005045W WO2005100800A1 WO 2005100800 A1 WO2005100800 A1 WO 2005100800A1 JP 2004005045 W JP2004005045 W JP 2004005045W WO 2005100800 A1 WO2005100800 A1 WO 2005100800A1
Authority
WO
WIPO (PCT)
Prior art keywords
wedge
divided pieces
jig
pieces
cylindrical portion
Prior art date
Application number
PCT/JP2004/005045
Other languages
English (en)
Japanese (ja)
Inventor
Tsutomu Kadotani
Takashi Takagaki
Masato Yamada
Yoshiyuki Matsubara
Motonobu Nishino
Original Assignee
Sumitomo (Sei) Steel Wire Corp.
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 Sumitomo (Sei) Steel Wire Corp. filed Critical Sumitomo (Sei) Steel Wire Corp.
Priority to CNB2004800426615A priority Critical patent/CN100489320C/zh
Priority to EP04726284A priority patent/EP1757819A4/fr
Priority to PCT/JP2004/005045 priority patent/WO2005100800A1/fr
Publication of WO2005100800A1 publication Critical patent/WO2005100800A1/fr

Links

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

Definitions

  • the present invention relates to a jig for uniformly arranging divided pieces of a wedge for fixing an end portion of a PC steel material in a PC structure.
  • a fixing device using a wedge is known as a structure for fixing a PC steel material such as a PC steel strand to a PC structure. As shown in FIG. 3, this fixing device is composed of a combination of a wedge 200 and an anchor disc 120 or a female cone 130 having tapered holes 121 and 131.
  • the wedge 200 is usually formed into a truncated cone with a large diameter at one end and a small diameter at the other end by combining two or three divided pieces.
  • a circular hole extending in the axial direction is formed at the center of the wedge 200.
  • the PC steel strand 100 is gripped by the wedge 200 in this circular hole.
  • a groove is formed on the outer periphery of the large diameter side of each divided piece. In a state where the divided pieces are combined in a truncated cone shape, an O-ring (not shown) is fitted into this groove so that the divided pieces are bound so as not to be separated.
  • the PC steel stranded wire 100 whose end is gripped by the wedge 200 is given a predetermined tension by a jack, and is fixed by fitting the wedge 200 into the tapered hole of the anchor disc 120 or the female cone 130.
  • the anchor disk 120 or the female cone 130 is placed on an anchor plate 110 located, for example, on the surface of the concrete structure.
  • a rib cast anchor or a socket may be used instead of an anchor plate.
  • the conventional wedge simply retains the shape of a truncated cone because the divided pieces are bound by an o-ring.
  • the O-ring 140 is easily extended at the time of fixing, and the divided pieces may be shifted in the axial direction or the circumferential direction.
  • the PC steel strand is bent near the fixing device (when it is not linearly arranged)
  • wedges used for diagonal cables and outer cables of cable-stayed bridges which require high fatigue characteristics, have a high level of requirement for the uniform arrangement of each split piece, and further prevention of slippage is required.
  • a wedge driving device described in JP-A-7-279912 is known.
  • This device is composed of an outer cylinder and a hollow extruded cylinder that is freely slidably accommodated in the outer cylinder.
  • At the tip of the outer cylinder there are a plate spring for temporarily fixing the divided pieces, and a stopper located between the divided pieces to prevent the circumferential movement of the divided pieces. Disclosure of the invention
  • Patent Document 1 has the following problems.
  • a stopper and a leaf spring are required to keep the divided pieces combined in a truncated conical shape, so the number of parts is large and the configuration of the device becomes complicated.
  • the main object of the present invention is to arrange the divided pieces without displacement in the circumferential direction or the axial direction and to grip the PC steel material with a simple configuration, thereby preventing the bias of the applied stress applied to the PC steel material.
  • An object of the present invention is to provide a jig for uniformly disposing a fixing wedge.
  • Another object of the present invention is to provide an even arrangement of fixing wedges that can be used without any problem even when the wedge split pieces are bound by o-rings and that prevent the split pieces from shifting in the circumferential or axial direction.
  • the purpose is to provide jigs.
  • the present invention achieves the above object by using a jig in which the divided pieces are evenly arranged when the wedge is inserted into the taper hole.
  • the jig of the present invention is provided between the cylindrical portion fitted on the outer side of the PC steel material and the end of the cylindrical portion, and is inserted between the wedge divided pieces for gripping the PC steel material to surround each divided piece. And a protrusion arranged evenly in the direction.
  • the jig of the present invention has a cylindrical portion and a projection.
  • This tubular portion has an inside diameter that allows the passage of the PC steel material.
  • the material of the cylindrical part is such that when the protrusion is inserted between the split pieces of the wedge, the side of the cylindrical part that does not have the protrusion is hit, so that the mechanical strength is sufficient to withstand the impact Have It consists of one thing.
  • the end face provided with the protruding portion is formed of a surface orthogonal to the axial direction of the cylindrical portion so that the divided pieces can be evenly arranged in the axial direction.
  • the protruding portion is a plurality of protruding pieces protruding from the end of the cylindrical portion.
  • Each projection is evenly arranged in the circumferential direction of the cylindrical portion.
  • each protruding portion is made of the same material as the cylindrical portion and is integrally formed.
  • the number of projections is a number corresponding to the number of gaps between the divided pieces. For example, if a wedge is composed of three divided pieces, the number of gaps is three, and the number of protrusions is three.
  • the shape of the protrusion is a tapered shape that becomes thinner toward the tip. By making the protrusions tapered, the protrusions can be easily inserted between the divided pieces and easily removed.
  • the above jig is used by inserting a projection between the divided pieces constituting the wedge and hitting the end of the cylindrical portion opposite to the projection.
  • the projections between the divided pieces By inserting the projections between the divided pieces, the divided pieces can be evenly arranged in the circumferential direction.
  • the end face of the cylindrical portion provided with the projection abuts on each of the divided pieces, each of the divided pieces can be arranged without being shifted in the axial direction.
  • a projection may be inserted between the divided pieces in advance, and then the divided pieces may be inserted into a tapered hole such as a female cone, or the divided pieces may be inserted into a tapered hole such as a female cone. After that, a projection may be inserted between the divided pieces.
  • the following effects can be obtained. (1) By using a jig having protrusions evenly arranged at the tip of the cylindrical portion, if the protrusions are inserted between the wedge split pieces, the split pieces will automatically move in the circumferential direction. It will be evenly arranged, and it will be possible to solve the problem of gripping the PC steel with the gap.
  • the jig of the present invention has an extremely simple structure in which a plurality of protrusions are formed at the end of the cylindrical portion, and has a simple use in which the protrusions are inserted between the wedge split pieces.
  • the method can suppress the displacement of the divided pieces.
  • the jig of the present invention can be used without any problem even when the wedge split pieces are bound by a ring.
  • FIG. 1 (A) is an end view of the jig of the present invention
  • FIG. 1 (B) is a front view thereof.
  • FIG. 2 is an explanatory view showing a state in which the jig of the present invention is fitted between wedge split pieces.
  • FIG. 3 (A) is an explanatory diagram of a fixing structure using an anchor disk
  • FIG. 3 (B) is an explanatory diagram of a fixing structure using a female cone.
  • FIG. 4 is an explanatory view showing the displacement of the divided pieces constituting the wedge.
  • FIG. 1 shows the jig of the present invention, wherein (A) is an end view thereof, and (B) is a front view thereof.
  • This jig has a cylindrical portion 10 and a protruding portion 20 protruding from one end thereof.
  • the cylindrical portion 10 is a cylindrical member having an inner diameter into which the PC stranded wire is inserted and having an outer diameter slightly smaller than the outer diameter of the wedge.
  • the cylindrical portion 10 was formed of a carbon steel pipe for machine structural use (STKM13A) having an outer diameter of 25.4 mm and an inner diameter of 19.4 mm.
  • a protrusion 20 is formed on one end of the cylindrical portion 10.
  • the three protrusions 20 are evenly arranged in the circumferential direction at intervals of 120 °.
  • the protruding portion 20 is also made of the same material as the tubular portion 10 and is integrated with the tubular portion 10.
  • the protruding portion 20 has a tapered shape in which the width at the base side is wide and the width becomes narrower toward the tip side. Its length is 10 mm, the width at the base is 4 mm, and the width at the tip is 3 mm.
  • one end side of the tubular portion 10 on which the projecting portion 20 is formed that is, a portion where the projecting portion 20 is not provided on the end surface of the tubular portion is formed of a surface orthogonal to the axial direction of the tubular portion 10.
  • This jig is used in the following procedure.
  • a wedge 200 having one end on the large diameter side and the other end on the small diameter side is prepared.
  • This wedge 200 is constructed in a nearly truncated cone shape by combining three divided pieces. Combine such divided pieces into a truncated cone shape, and insert an O-ring from the outer periphery of the divided pieces so that each divided piece does not fall apart.
  • the projection 20 of the jig into the gap between the divided pieces (wedge 200) in the combined state.
  • the protrusion 20 is thinner toward the tip. —Because it is configured as a single piece, it can be easily inserted into the gap between the divided pieces. Since the projections 20 are evenly arranged in the circumferential direction of the cylindrical portion 10 due to the insertion of the jig into the gap, the divided pieces are also equally arranged in the circumferential direction.
  • the protrusion 20 when the protrusion 20 is inserted into the gap between the divided pieces, the surface of the cylindrical portion end face without the protrusion 20 comes into contact with the wedge large diameter side end face. Due to this contact, the divided pieces are arranged without being shifted in the axial direction.
  • the wedge 200 combined with the jig is fitted into the female cone 1 30.
  • the female cone 130 is formed such that a tapered hole 1 31 is formed, and the PC steel stranded wire 100 protrudes from the tapered hole 1 31.
  • the wedge 200 combined with the jig is inserted into the tapered hole 131 without any deviation in either the circumferential direction or the axial direction. No deviation occurs in the divided pieces. Then, the other end of the cylindrical portion 10, that is, the side having no protrusion is hit with a hammer or the like, and a wedge is pressed into the tapered hole 131. Then, remove the jig from wedge 200.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

Un outil de disposition uniforme pour une cale d'ancrage capable d'éviter qu'une tension supplémentaire appliquée à un matériau d'acier PC ne soit déviée par la disposition des pièces séparées de la cale sans être déviées dans la direction de l'axe ou de la circonférence et en maintenant le matériau d'acier PC par une structure simple, composée d'une partie tubulaire (10) fixée sur l'extérieur du matériau d'acier PC (brin du matériau d'acier PC (100)) et de pièces projetées (20) formées à l'extrémité de la partie tubulaire (10) et insérées entre les pièces séparées de la cale maintenant le matériau d'acier PC pour disposer de manière uniforme les pièces séparées dans la direction de la circonférence. Puisque les pièces projetées (20) sont insérées entre les pièces séparées de la cale, les pièces séparées peuvent être agencées de manière uniforme dans la direction de la circonférence.
PCT/JP2004/005045 2004-04-07 2004-04-07 Outil de disposition uniforme pour cale d'ancrage WO2005100800A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CNB2004800426615A CN100489320C (zh) 2004-04-07 2004-04-07 固定楔的均等配置夹具
EP04726284A EP1757819A4 (fr) 2004-04-07 2004-04-07 Outil de disposition uniforme pour cale d'ancrage
PCT/JP2004/005045 WO2005100800A1 (fr) 2004-04-07 2004-04-07 Outil de disposition uniforme pour cale d'ancrage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/005045 WO2005100800A1 (fr) 2004-04-07 2004-04-07 Outil de disposition uniforme pour cale d'ancrage

Publications (1)

Publication Number Publication Date
WO2005100800A1 true WO2005100800A1 (fr) 2005-10-27

Family

ID=35150065

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/005045 WO2005100800A1 (fr) 2004-04-07 2004-04-07 Outil de disposition uniforme pour cale d'ancrage

Country Status (3)

Country Link
EP (1) EP1757819A4 (fr)
CN (1) CN100489320C (fr)
WO (1) WO2005100800A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387036A (zh) * 2015-12-11 2016-03-09 中国船舶重工集团公司第七一九研究所 一种面接触式自适应无损快装紧固装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021090529A1 (fr) * 2019-11-07 2021-05-14 東京製綱株式会社 Raccord métallique d'ancrage de corps de câble, gabarit de fixation/détachement de coin et gabarit de retrait

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830692U (ja) * 1981-08-21 1983-02-28 建設基礎エンジニアリング株式会社 センタ−ホ−ル型油圧ジヤツキにおける緊張用楔解放機構
JPH07279912A (ja) 1994-04-12 1995-10-27 V S L Japan Kk 引張材定着具へのくさび打ち込み装置
JP2002372013A (ja) * 2001-06-16 2002-12-26 Takeshi Kameyama 締結装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165232B (de) * 1953-03-03 1964-03-12 J J Udall S Building Company L Vorrichtung zum Spannen von Draehten od. dgl., insbesondere im Spannbetonbau
DE8509813U1 (de) * 1985-04-02 1985-05-23 Halamay, Hermann, 8935 Fischach Steckschlüsseleinsatz mit Zapfen zum Betätigen von Nutmuttern (Wellenmuttern, Abdrückmuttern)
DE29715682U1 (de) * 1997-09-01 1997-11-06 Mitha, Hashim, Vancouver Bolzenstangenstruktur für Fahrräder
DE10062227A1 (de) * 2000-12-13 2002-06-20 Dyckerhoff & Widmann Ag Verfahren zum Einbauen und Spannen eines freigespannten Zugglieds, insbesondere eines Schrägseils für eine Schrägseilbrücke sowie Verankerungsvorrichtung zum Durchführen des Verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830692U (ja) * 1981-08-21 1983-02-28 建設基礎エンジニアリング株式会社 センタ−ホ−ル型油圧ジヤツキにおける緊張用楔解放機構
JPH07279912A (ja) 1994-04-12 1995-10-27 V S L Japan Kk 引張材定着具へのくさび打ち込み装置
JP2002372013A (ja) * 2001-06-16 2002-12-26 Takeshi Kameyama 締結装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1757819A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387036A (zh) * 2015-12-11 2016-03-09 中国船舶重工集团公司第七一九研究所 一种面接触式自适应无损快装紧固装置

Also Published As

Publication number Publication date
EP1757819A4 (fr) 2011-03-30
CN1926339A (zh) 2007-03-07
CN100489320C (zh) 2009-05-20
EP1757819A1 (fr) 2007-02-28

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