EP0912817A1 - Dispositif de raccordement pour elements en beton - Google Patents

Dispositif de raccordement pour elements en beton

Info

Publication number
EP0912817A1
EP0912817A1 EP97931966A EP97931966A EP0912817A1 EP 0912817 A1 EP0912817 A1 EP 0912817A1 EP 97931966 A EP97931966 A EP 97931966A EP 97931966 A EP97931966 A EP 97931966A EP 0912817 A1 EP0912817 A1 EP 0912817A1
Authority
EP
European Patent Office
Prior art keywords
connector part
housing
housing parts
taper
concrete
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.)
Ceased
Application number
EP97931966A
Other languages
German (de)
English (en)
Inventor
Christopher Richard Smith
Norman Stanley Thomas
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.)
CV Buchan Ltd
Original Assignee
CV Buchan 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 CV Buchan Ltd filed Critical CV Buchan Ltd
Publication of EP0912817A1 publication Critical patent/EP0912817A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/08—Lining with building materials with preformed concrete slabs
    • E21D11/083—Methods or devices for joining adjacent concrete segments

Definitions

  • This invention relates to a connecting device for connecting concrete segments and is particularly concerned with connecting concrete segments edge-to-edge to form a tunnel or shaft lining.
  • Tunnel and shaft linings are built up in rings of segments of pre-cast concrete, the segments being joined edge-to-edge and the rings being also joined together.
  • Various known methods and devices are known for achieving this and a typical arrangement is disclosed in GB-A-1 498 625.
  • a connecting device for connecting segments of concrete or similar setable material edge-to-edge, the device comprising a first connector part of dumb-bell-like form and two housing parts for receiving respective opposite portions of the connector part; characterised in that each housing part has an internal tapered form so that, when the housing parts are set in opposed concrete segments to be connected and the connector part is inserted in the housing parts, the taper of each housing part causes the connector part to stretch, thereby providing a tensile load between said opposite portions of said connector part.
  • each housing part has an internal tapered form with a leading section of taper of one slope and a hind section of taper of a second slope so that when the connector part is inserted as aforesaid, the leading section of taper of each housing part causes the connector part to stretch and the hind section of taper of each housing part causes the connector part to be trapped by relieving a measure of the stretch.
  • a method for connecting segments of concrete or similar setable material edge-to-edge using a connecting device which comprises a first connector part of dumb-bell-like form and two housing parts for receiving respective opposite portions of the connector part; characterised by each housing part having an internal tapered form the method including setting the housing parts in opposed concrete segments to be connected, offering the concrete segments to one another and inserting the connector part in the housing parts, the taper of each housing part causing the connector part to stretch under load between said opposite portions.
  • the connector part and the housing parts are of a plastics material.
  • the connector part may be of, for example, a high density filled nylon material or it could be a fibre reinforced nylon material.
  • the connector part is intended to have high strength combined with high elasticity and the shape is such as achieve lines of stress on stretching that are substantially smooth.
  • the housing parts on the other hand may be of a plastics material such as PVC.
  • the housing parts when viewed from a forward or leading section are of keyhole-shape and can be provided with external fins so as to be anchored in the concrete, with the leading section of each housing opening in the edge of the segment in which it is set.
  • the keyhole section is of a depth to form a split tube.
  • the connector part comprises rounded, opposite, end portions, which are the portions which are driven into the respective housing parts, interconnected by a web portion extending in use between the two housing parts and passing between the split portions of the tubes of the keyhole sections .
  • small pins or other protruding members may be provided on the connector part to allow the connector part to jam against the insides of the housing parts near the splits. The operative is then in a position to have both hands free to drive the connector part home with a hammer, for example.
  • a locating means can be provided.
  • This can be in the form of a shear pin, which is inserted in a rearmost portion of the hind section of one of the housing parts, the shear pin having a body portion extending, at right angles to the split, out of the housing part in which it is inserted to lie along a groove provided in the edge of the concrete segment to be joined to an adjacent edge of the other segment.
  • the invention also extends to a tunnel or shaft lining segment incorporating at least one connecting device according to the invention. Preferably, there are four housing parts per segment.
  • Figure 1 is a perspective view of the connector part
  • Figures 2A, 2B and 2C are respectively a plan view, side view and underneath view of the connector part
  • Figures 3A-3 ⁇ are views of one of the housing parts, which are all identical, Figure 3A being a side view, Fi ⁇ rure 3B being a front view, Figure 3C being a section taken along line A-A in Figure 3A, Figure 3D being a section taken along line B-B in Figure 33 and Figure 3E being a section taken along line C- C in Figure 3B,
  • Figures 4A and 4B are respectively an end view and a side view of a preferred form of shear pin
  • Figure 5 is a diagrammatic view illustrating the arrangement of two adjacent concrete segments to be connected, with the two housing parts set in the concrete and the shear pin in place, - 3 -
  • Figure 6 is a diagrammatic view illustrating the two concrete segments ready for alignment
  • Figure 7 shows the two concrete segments aligned and joined by the connecting device.
  • Figures 1, 2A, 2B and 2C show the first connector part 1 of the connecting device, the connector part 1 being of dum -bell -like form with rounded end portions 2 which are each provided with a taper calculated to work in a desired fashion with tapers provided inside the housing parts (to be described) .
  • pins 3 which are provided simply to hold the connector part against the insides of the housing parts before the connecter part is driven home.
  • the connector part 1 is of high strength plastics material with high elasticity and it has a substantially constant elastic load/stretch characteristic so that, upon a tensile effort being applied to the ends 2 of the connector part 1, which is what occurs when it is being driven into the housing parts, the load reaches and sustains a substantially constant level, which is designed to be below the breaking load of the concrete segments. Tests have shown, for example, that consecutive tensile stresses to stretch the connector part lengthwise result in a substantially constant load in excess of one tonne each time between the ends 2.
  • the housing part 4 has an internal cross- section which is of substantially keyhole- shape with external fins 5 which are designed to - o
  • a front side of the housing part 4 is provided with out-turned flanges 6 which are intended to align with the front of an edge face of the mould in which the concrete segment is to be cast.
  • the keyhole shape as can be seen provides an open slot 7 at the front of the housing part 4, whilst the rear of the housing part 4 has the rounded part of the keyhole, in which one of the end portions 2 of the connector part 1 is to be trapped, the web of the connector part 1 extending out of the front slot 7.
  • each housing part has an internal tapered form running the length of the keyhole. This taper is applied on the two edges 8 providing the transition between the rounded part of the keyhole- shape and the flared or split front end 7.
  • a leading section of taper 8A is of one slope and a hind section of taper 8B has a second slope, the first, leading taper 8A being steeper than that of the hind section of taper 8B.
  • shear pin 9 is illustrated which is provided with a collapsible and/or resilient lead portion 10 for insertion in the rearmost part of the hind section of one of the housing parts 4 (see the arrow beside Figure 4B) , the rear 11 of each housing part 4 being closed.
  • the shear pin 9 can be made of the same material as the connector part 1.
  • each concrete segment will be provided, e.g., with four such housing parts 4, two on each transverse edge.
  • the shear pin 9 will be punched into the base or rear end 11 of alternate housing parts 4 and this arrangement allows for the segment to be rotated, i.e. it is not handed. This is of particular advantage when working in a tunnelling construction environment.
  • the two segments 12 and 13 are offered to one another with opposed housing parts 4 closely adjacent.
  • the keyhole section is clearly illustrated.
  • the shear pins 9 assist in such location.
  • the oval shape of the main body of the shear pin 9 takes into account that the joint between the concrete segments has packing added to it.
  • the shear pin 9 sits in opposed grooves 14 in the respective segments 12 and 13.
  • the connector part 1 is located in the two housing parts 4, initially manually and being held in place e.g. by the pins 3. Then the connector part is forcibly driven further into the keyholes of the connector parts 4, the tapers on the end portions of the connector part 1 working with the tapers 8A and 8B of the connector parts.
  • the tapers 8A apply a tensile stress to the connector part 1 thereby to stretch it and the tapers therefore provide - a -
  • the shear pins 9 assist in preventing misalignment of the housing parts 4 which otherwise might happen because of the hammering effect of driving the connector parts 1 in the housing parts 4.
  • housing parts 4 are set some distance back from the major faces of the concrete segments 12 and 13, a recess 15 to a standard depth being provided in the intrados of each segment to allow the entry of the connector part 1.
  • the hollows at the connecting locations can be filled over by concrete to the required depth.
  • all of the components are of a plastics material, there would not normally be the need to fill in with concrete since, as compared with known systems, there is no exposed steel, thereby providing a durable system without any corrosion problem.
  • the plastics materials used are intended to have a longevity to provide a long life segmental system.
  • each connector part 1 can be of the order of 75 mm
  • the web of the connector part 1 can be of the order of 8 mm thick
  • the depth of the housing part 4 can be of the order of 50 mm
  • the maximum fin width across the housing part can be of the order of 45 mm.
  • the connector part 1 can be moulded in such a way to provide a fault line 1A located around the perimeter which also assists the operator in allowing the connector part 1 to be held initially in the housing parts 4, thereby leaving the operator with free hands for the subsequent driving in of the connector part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L'invention porte sur un dispositif de raccordement permettant de raccorder des éléments en béton ou des éléments d'un autre matériau similaire prêt à être mis en forme. Ce dispositif comporte une pièce de raccordement en matière plastique (1) en forme d'haltère et deux parties constituant une enveloppe (4 ) destinées à recevoir les deux parties opposées (2) de la pièce de raccordement. L'intérieur de chaque partie constituant l'enveloppe est en forme de cône de sorte que, lorsque ces parties reçoivent les éléments opposés en béton à raccorder et que la pièce de raccordement est insérée dans lesdites parties constituant l'enveloppe, leur conicité fait que la pièce de raccordement s'étire, donnant naissance à une force de traction entre les parties opposées (2) de la pièce de raccordement. Le cône a, de préférence, deux angles d'inclinaison, la section antérieure dudit cône amenant la pièce de raccordement à s'étirer et la section postérieure l'emprisonnant du fait d'une réduction partielle de l'étirement.
EP97931966A 1996-07-19 1997-07-18 Dispositif de raccordement pour elements en beton Ceased EP0912817A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9615186 1996-07-19
GBGB9615186.5A GB9615186D0 (en) 1996-07-19 1996-07-19 Connecting device for connecting concrete segments
PCT/GB1997/001952 WO1998003773A1 (fr) 1996-07-19 1997-07-18 Dispositif de raccordement pour elements en beton

Publications (1)

Publication Number Publication Date
EP0912817A1 true EP0912817A1 (fr) 1999-05-06

Family

ID=10797185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931966A Ceased EP0912817A1 (fr) 1996-07-19 1997-07-18 Dispositif de raccordement pour elements en beton

Country Status (8)

Country Link
EP (1) EP0912817A1 (fr)
JP (1) JP2000514892A (fr)
AU (1) AU714375B2 (fr)
CA (1) CA2260028A1 (fr)
GB (1) GB9615186D0 (fr)
IL (1) IL126326A0 (fr)
NZ (1) NZ332495A (fr)
WO (1) WO1998003773A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2333799A (en) * 1998-01-29 1999-08-04 Buchan C V Ltd Device for joining two members together
JP2016023454A (ja) * 2014-07-18 2016-02-08 吉佳エンジニアリング株式会社 既設マンホールの補修構造
GB201503995D0 (en) * 2015-03-09 2015-04-22 Technical Tunnelling Components Ltd And Ozengi Associates Ltd Coupler device
CN106801610B (zh) * 2017-03-13 2020-05-05 上海隧道工程有限公司 使用层叠式构造的管片块间连接接头及利用其连接的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2457427A1 (de) * 1974-12-05 1976-06-10 Wayss & Freytag Ag Tuebbing mit selbstverriegelnden verbindungs-elementen fuer den ausbau von tunneln und schaechten
GB1498625A (en) * 1975-05-22 1978-01-25 Nuttall Ltd E Tunnel linings
GB2103684B (en) * 1981-08-07 1985-09-04 Commercial Shearing Tunnel liners
US4477204A (en) * 1983-01-17 1984-10-16 Clarence J. Rohde Cast concrete element for underground tubular structure
FR2562170B1 (fr) * 1984-03-30 1987-08-21 Loire Electro Region Pays Dispositif pour l'assemblage d'elements modulaires et elements modulaires relies par un tel dispositif
GB8726575D0 (en) * 1987-11-13 1987-12-16 Fairlough Civil Eng Ltd Tunnel linings
JPH0672519B2 (ja) * 1992-06-05 1994-09-14 大豊建設株式会社 支保工用セグメントの結合機構

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9803773A1 *

Also Published As

Publication number Publication date
NZ332495A (en) 1999-05-28
GB9615186D0 (en) 1996-09-04
CA2260028A1 (fr) 1998-01-29
WO1998003773A1 (fr) 1998-01-29
JP2000514892A (ja) 2000-11-07
AU3554597A (en) 1998-02-10
AU714375B2 (en) 1999-12-23
IL126326A0 (en) 1999-05-09

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