EP1861562A2 - Dispositif pour un accouplement d'enveloppes - Google Patents

Dispositif pour un accouplement d'enveloppes

Info

Publication number
EP1861562A2
EP1861562A2 EP05717140A EP05717140A EP1861562A2 EP 1861562 A2 EP1861562 A2 EP 1861562A2 EP 05717140 A EP05717140 A EP 05717140A EP 05717140 A EP05717140 A EP 05717140A EP 1861562 A2 EP1861562 A2 EP 1861562A2
Authority
EP
European Patent Office
Prior art keywords
piece
pieces
coupling device
referred
coupling
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
EP05717140A
Other languages
German (de)
English (en)
Other versions
EP1861562B1 (fr
Inventor
John R. Crigler
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.)
VSL International Ltd
Original Assignee
VSL International 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 VSL International Ltd filed Critical VSL International Ltd
Publication of EP1861562A2 publication Critical patent/EP1861562A2/fr
Application granted granted Critical
Publication of EP1861562B1 publication Critical patent/EP1861562B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E04C5/10—Ducts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/28—Concrete reinforced prestressed

Definitions

  • the invention relates to a device for coupling the ends of sheaths, such as sheaths which have been placed beforehand in prefabricated elements intended to be assembled through reciprocal pressing of the coupling surfaces.
  • prestressing cables In precast segmental construction, two types of prestressing cables are used, i.e. external unbonded and internal bonded.
  • the invention concerns precast segmental construction in which internal bonded prestressing cables are used.
  • the invention refers more specifically to a device for coupling the ends of sheaths, such as sheaths which have been embedded in the prefabricated elements in concrete intended to be assembled through reciprocal pressing of the coupling surfaces.
  • the invention concerns the field of construction of structures such as bridges, achieved through reciprocal pressing, then holding, of the prefabricated elements in concrete, by means of prestressing cables which pass through the different sheaths situated in the these prefabricated elements.
  • the invention likewise relates to prefabricated elements which comprise pieces with a view to forming the device of the aforesaid type for coupling the ends of sections of sheaths.
  • the invention likewise relates to constructions made with prefabricated elements which are provided with devices of the aforesaid type for coupling the ends of sections of sheaths.
  • constructions comprising an elongated part of great length, such as a bridge girder, known is to prefabricate said elongated part of the construction in a plurality of sections which, referred to as prefabricated elements, will be able to be subsequently placed in reciprocal pressing contact and assembled on the site of the civil engineering construction.
  • the prefabricated elements are conceived for assembly through reciprocal pressing along coupling surfaces which are substantially orthogonal to the longitudinal axis of the elongated part to be formed.
  • prestressing cables which pass through the assembly of the prefabricated elements longitudinally and are tensioned in such as way as to press forcefully the prefabricated elements against one another.
  • the ends of the sheaths are positioned in such a way as to ensure a continuity of passage at the level of the coupling surfaces between the prefabricated elements.
  • One result which the invention aims to obtain is a coupling device which allows a continuous sheath to be created across the segments' joints, that is to say a coupling device which
  • the aim of the invention is to ensure a complete encapsulation of the tendon inside the sheath.
  • the present invention also allows extreme longitudinal tolerances in the expected joints in case of shimming of prefabricated elements.
  • the invention has as its object a device of the aforementioned type, according to claim 1.
  • Figure 1 a partial lateral view of a civil engineering construction comprising an elongated part constituted by reciprocal pressing of prefabricated elements
  • Figure 2 on an enlarged scale, a partial sectional view of two prefabricated elements during reciprocal pressing,
  • Figure 3 on a scale enlarged still more than Figure 2, a partial sectional view of two prefabricated elements seen immediately after their reciprocal pressing,
  • Figure 4 a partial sectional view of two prefabricated elements after assembly
  • Figure 5 a view in longitudinal section of an elongated body used for production of the coupling device according to the invention
  • Figure 6 a view in longitudinal section of the elongated body according to Figure 5, after division,
  • Figures 7 and 8 two lateral views of a piece likewise used for construction of the device according to the invention.
  • a civil engineering construction 1 can be seen, such as a bridge, comprising an elongated part 2, such as a bridge girder.
  • the elongated part 2 is composed of a plurality of sections, which are referred to in the following as prefabricated elements 3.
  • the prefabricated elements 3 are designed to be assembled through reciprocal pressing along the coupling surfaces 4, 5, referred to as first and second, which are substantially orthogonal to a longitudinal axis 6 which has the elongated part 2 to be made up.
  • Each prefabricated element 3 includes two coupling surfaces 4, 5 which are substantially opposite and are referred to as first coupling surface 4 and second coupling surface 5 ( Figure 2).
  • the different prefabricated elements 3 placed in reciprocal pressing contact are held together by means of prestressing cables 7 which, on the one hand, pass through the assembly of prefabricated elements 3 longitudinally, and, on the other hand, are tensioned in such a way as to press forcefully said prefabricated elements 3 against one another, by their first and second coupling surfaces 4, 5 (this assembly technique is known and is not explained in detail in the following).
  • Each prefabricated element 3 comprises at least one sheath 8 making it possible for the prestressing cable to pass through the element, each sheath having two opposite ends, referred to as first and second end 9, 10.
  • the first and second ends 9, 10 of the sheath 8 each come out into one of said first and second coupling surfaces 4, 5.
  • the sheath 8 is of a corrugated type, that is to say comprises ribs to allow transfer of bond forces from the prestressing cables 7 to the prefabricated elements 3.
  • the first and second ends 9, 10 of each sheath 8 with which a prefabricated element 3 is provided are disposed such that during the assembly of a plurality of prefabricated elements 3 to one another, each of said first and second ends 9, 10 which comes out into a first or second coupling surface 4, 5 is aligned with a first or a second end 9, 10 of another sheath 8 provided in the one of the prefabricated elements 3 which has a first or a second coupling surface 4, 5 opposite thereto.
  • first and second ends 9, 10 which are aligned co-operate through a coupling device 11 , the function of which is, in particular, to provide leak-tight connection of sheaths.
  • the coupling device 11 comprises:
  • the coupling device 11 is noteworthy in that it comprises:
  • first and second pieces 12, 13 having first and second inner bearing areas 16, 17 which are each substantially cylindrical, and a third piece 18 having a third and a fourth outer bearing area 20, 21 which are cylindrical,
  • this third piece 18 and at least one of said first and second pieces 12, 13 having dimensions such that the third piece 18 can be placed in a position referred to as the first position P1, in which it is found entirely sheltered in one of said first and second pieces 12, 13,
  • said fourth outer bearing area 21 co-operates with a second bearing area 17 of a second piece 13.
  • the sheath 8 and the coupling device 11 can be installed at angles orthogonal or other than orthogonal to the coupling surfaces 4, 5 of the segments 3.
  • the coupling device of the invention comprises pieces with longitudinal dimensions that do not need to be of an exact predetermined length.
  • the device for coupling the ends of sheaths of the invention can be used whatever is the angle between the longitudinal axe of the prestressi ⁇ g cables 7 and the coupling surfaces 3, 4.
  • first and second pieces 12, 13 have first and second inner bearing areas 16, 17 which are each substantially cylindrical and of circular cross section, and a third piece 18 has a third and a fourth outer bearing area 20, 21 which are cylindrical and of circular cross section.
  • first and second pieces 12, 13 have first and second inner bearing areas 16, 17 which are each substantially cylindrical and of non-circular cross section, and a third piece 18 has a third and a fourth outer bearing area 20, 21 which are cylindrical and of non-circular cross section.
  • Said aforementioned cross section can be of a square type or of a flattened type such as a rectangular type or oval type.
  • the coupling device 11 according to the invention thus does not involve using a sealing element which, to ensure the tightness of the sheath, needs to be compressed in the direction of coming together of the prefabricated elements 3.
  • the sheath 8 is made of plastics such as polypropylene or polyethylene and the first piece 12 and the second piece 13 are likewise of material of the same nature, and, - on the other hand, said first piece 12 and second piece 13 are each assembled through welding to one of said first 9 and second 10 ends of the sheath 8 through which they must be borne.
  • connection such as fusion weld couplers or the use of mechanical couplers may be envisaged.
  • the third piece 18 is likewise made of plasties such as polypropylene or polyethylene.
  • the elements 23, 24 for longitudinal displacement of the third piece 18 between said first position P1 and said second position P2 consist essentially of:
  • a first stop 23 situated on the third piece 18 and integral therewith, this stop being able to transmit to said third piece 18 at least one of the actions which are a pushing action and a pulling action, this action being directed so as to bring about the displacement of the third piece 18 between said first and second positions P1, P2,
  • a control piece 24 capable of being inserted into a sheath 8 of a prefabricated element 3 in such a way as to have
  • first terminal part 25 bearing at least a second stop 26 intended to co-operate with the first stop 23 of a third piece 18 to enable it to apply at least one of the actions which are a pushing action and a pulling action to bring about its displacement between said first and second positions P1 , P2, • a second terminal part 27 which is situated outside the prefabricated element 3 when the first terminal part 25 cooperates with a first stop 23 of a third piece 18 for the purpose of applying one of said actions of pushing or of pulling intended to displace said third piece 18 between its positions referred to as first P1 and second P2.
  • the third piece is displaced from its first position P1 toward its second position P2 through pulling on the control piece 24.
  • the third piece 18 is made up of a tubular part with an internal face and an external face, and this tubular part is of a corrugated type, that is to say comprising ribs.
  • the third piece 18 has a first predetermined length L1.
  • the ribs create depressions in the internal face and projections on the external face, and each depression created in the internal face constitutes a stop which can be used as a first stop 23.
  • control piece 24 consists, for example, of a rod which, at a first end, bears a short bar of a first predetermined longitudinal dimension, connected at its middle to the rod by a hinge.
  • the short bar is held parallel against the rod by a spring.
  • the bar can be twisted away from the rod, against the action of the spring, by pulling on a string which is connected to said bar and presents a free end situated near a second end of the rod, in such a manner as to be able to be actuated by a person holding the rod by said second end.
  • the length of the short bar is predetermined in such a manner that, when the string is pulled from the second end of the rod, the two ends of this bar come in contact with the internal face of the third piece, preferably each with a depression created in the internal face.
  • the rod can be removed from the inside of the sheath.
  • control piece 24 consists of a rod which, at a first end, bears an expandable device.
  • This device is of a type, on the one hand, able to be radially contracted in order to be introduced in the third piece (or withdrawn from said third piece) and, on the second hand, able to be radially expanded against the internal face of the third piece 18 in order to co-operate with at least one depression of this face and allowing the third piece to be pulled or pushed.
  • the expandable device comprises :
  • said first and second inner bearing areas 16, 17 of the first and second pieces 12, 13 are made up of smooth surfaces which are cylindrical,
  • the third piece 18 bears at least two annular sealing elements 28, 29 which, referred to as first annular sealing element 28 and second annular sealing element 29, each have a face which forms at least partially one of said third and fourth outer bearing areas 20, 21 that bear said third piece 18, these annular sealing elements 28, 29 are each
  • said first and second annular sealing elements 28, 29 are, for example, O-rings made up of neoprene or similar material, but one skilled in the art is able to select other materials.
  • first and second annular sealing elements 28, 29 makes it possible to ensure a leak tightness in the coupling of the ends of the sheath 8.
  • the third piece 18 has at least two pressing and centering surfaces 181 to 185 in said first and second inner bearing areas 16, 17 of said first and second pieces 12, 13, and
  • the dimensions of the pressing and centering surfaces 181 to 185 are selected so as to ensure the functions of pressing and centering of the third piece 18 in the first and second inner bearing area 16, 17, without impeding the function of tightness obtained through said first and second annular sealing elements.
  • the third piece 18 consists of a tubular wall piece, referred to as third tubular wall 36, with a first predetermined length L1 between two opposite end faces 34, 35, referred to as first end face 34 and second end face 35, and the fifth 32 and sixth 33 stops borne by the third piece 18 are each made up of a portion of the surface formed by said first and second end faces 34, 35.
  • one of said first and second pieces 12, 13 has, inside, a second length l_2 which is at least equal to the first length L1 of the third piece 18, and
  • one of said first and second pieces 12, 13 has, inside, a second length L2 which is at least equal to the first length L1 of the third piece 18, and
  • the sheath 8 has a wall defining an inner passage with a first inner diameter of predetermined value D1 , and:
  • the first and second inner bearing areas 16, 17 of said first and second pieces 12, 13 each have a second and a third inner diameter D2, D3 which are of substantially equal value to one another, but each is a value greater than the value of the first inner diameter D1 of the sheath 8,
  • the third tubular wall 36 of the third piece 18 defines, on the one hand, an inner surface 22 having a fourth inner diameter D4 which is substantially equal to the first inner diameter D1 of the sheath 8, and, on the other hand, an outer surface 19 which is inscribed in a fifth outer diameter D5 of a value less than the values of said second and third inner diameters D2, D3 of the first and second pieces 12, 13,
  • first and second annular sealing elements 28, 29 are borne by the outer surface 19 of the third piece 18 in such a way as to each co-operate with one of said first and second inner bearing areas 16, 17 of said first and second pieces 12, 13.
  • the third piece 18 is made up of a corrugated tubular material of the same kind as used to constitute the sheath 8.
  • first piece 12 and the second piece 13 have cross sections which are relatively close to the cross section of the sheath, which is a considerable advantage when the available space on the first and second coupling surfaces 4, 5 is limited.
  • the third piece 18 has two opposite ends, referred to as third and fourth 186, 187, and at the level of at least one of these opposite ends the internal surface of the third tubular wall 36 of the third piece defines a guiding surface for the free introduction of the prestressing cable 7 in said third piece 18.
  • the third piece 18 is made up of a corrugated tubular material of the same kind as used to constitute the sheath 8, that is to say made up of a tubular material which comprises alternate curved ridges and curved furrows, at least one of the two opposite ends, said third end 186 and fourth end 187, comprises a part of a ridge in such a manner as to define the aforementioned guiding surface.
  • the coupling device according to the invention is thus adapted to the whole geometry of the cable.
  • the coupling device also takes into account the possibility of a deviation of the cable at the level of the third piece 18.
  • the values of the second and third inner diameters D2, D3 are equal, but this is not compulsory.
  • the first and the second tubular wall 14, 15 which define the first and second inner bearing areas 16, 17 that are provided respectively on the first and the second piece 12, 13, each define in addition a first and a second portion of connection 38, 39 of the first and second pieces 12, 13 to a first and a second end 9, 10 of sheath 8.
  • said first and second portion of connection 38, 39 of the first and second pieces 12, 13 are each formed by a cross-sectional diametral narrowing of said first and second tubular walls 14, 15.
  • the third 30 and fourth 31 stops are each formed by a part of the first and second inner bearing areas 16, 17 which, provided by each of the first and second pieces 12, 13, follows the diametral narrowing of each of said first and second tubular walls 14, 15.
  • said first piece 12 and second piece 13 are achieved by division of an elongated body 40, and this along at least a transversal plane T substantially orthogonal to a longitudinal axis 41 of this body
  • said body comprising the necessary material for said first and second pieces 12, 13.
  • the division can be achieved through cutting into pieces.
  • the elongated body 40 has:
  • the sixth inner diameter D6 is adjusted to correspond to the value of said second and third inner diameters D2, D3, • the inner length of which, referred to as the fourth length L4, is substantially equal to the sum of said second and third lengths L2, L3 selected for said first and second pieces 12, 13,
  • first and second opposite end parts 44, 45 which, referred to as first and second opposite end parts, make up said first and second connection portion 38, 39 and each result from a diametral narrowing of the fourth tubular wall 43 forming the intermediate part 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un dispositif d'accouplement (11) pour des extrémités opposées (9, 10) d'enveloppes (8). Ce dispositif présente des extrémités opposées (9, 10) appelées première extrémité et seconde extrémité. Ces extrémités constituent des parties d'éléments préfabriqués (3) destinés à être assembler par le pressage de leurs surfaces d'accouplement (4, 5). Chaque élément préfabriqué (3) comprend deux surfaces d'accouplement opposées appelées première (4) et seconde surface d'accouplement (5). Le dispositif d'accouplement (11) de l'invention comprend: une première partie (12) et une seconde partie (13), chacune de ces parties étant située respectivement sur la première extrémité (9) et sur la seconde extrémité (10) d'une enveloppe (8) qui constitue une partie d'un élément préfabriqué (3), chaque extrémité étant respectivement située au niveau de la première surface d'accouplement (4) et de la seconde surface d'accouplement (5), la première partie et la seconde partie (12, 13) présentant chacune une première paroi tubulaire (14) et une seconde paroi tubulaire (15) définissant une première zone de support intérieure (16) et une seconde zone de support intérieure (17); une troisième partie (18) conçue pour assurer un accouplement étanche aux fuites entre la première partie (12) et la seconde partie (13) qui sont supportées par des éléments préfabriqués (3) conçus pour venir en contact par pression l'un contre l'autre, la troisième partie (18) présentant: d'une part, une surface extérieure (19) sur laquelle une troisième zone de support extérieur (20) et une quatrième zone de support extérieur (21) peuvent être délimitées, chaque zone étant conçue pour coopérer avec une première zone de support intérieure (16) ou une seconde zone de support intérieure (17) définie par l'une des parties (12, 13) avec laquelle une première extrémité (9) et une seconde extrémité (10) de l'enveloppe (8) est fournie, et d'autre part, une surface intérieure (22) conçue pour délimiter un canal axial destiné à assurer une continuité de passage pour un câble de prétention (7) situé entre deux éléments préfabriqués (3).
EP05717140A 2005-03-23 2005-03-23 Dispositif pour un accouplement de gaines Active EP1861562B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/051358 WO2006099900A2 (fr) 2005-03-23 2005-03-23 Dispositif pour un accouplement d'enveloppes

Publications (2)

Publication Number Publication Date
EP1861562A2 true EP1861562A2 (fr) 2007-12-05
EP1861562B1 EP1861562B1 (fr) 2010-10-27

Family

ID=35455741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05717140A Active EP1861562B1 (fr) 2005-03-23 2005-03-23 Dispositif pour un accouplement de gaines

Country Status (2)

Country Link
EP (1) EP1861562B1 (fr)
WO (1) WO2006099900A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9879804B2 (en) 2013-06-17 2018-01-30 Structural Technologies, Llc Duct coupler devices, systems, and related methods
WO2015091915A1 (fr) * 2013-12-20 2015-06-25 A/S Skandinavisk Spændbeton Construction et procédé de fabrication d'une construction
FR3040748B1 (fr) 2015-09-07 2017-08-25 Airbus Helicopters Commande a roulement, systeme mecanique et aeronef
CN106049294B (zh) * 2016-08-03 2018-02-06 中国铁路总公司 节段拼装梁预应力孔道连接器
JP6820208B2 (ja) * 2017-01-26 2021-01-27 阪神高速道路株式会社 プレキャストコンクリートブロックの接合部構造及びプレキャストコンクリートブロックの接合構造体
JP2018123672A (ja) * 2017-02-02 2018-08-09 東拓工業株式会社 間詰用シース継手、これを含むシース管路およびその施工方法
JP2022048620A (ja) * 2020-09-15 2022-03-28 株式会社栗本鐵工所 管体の接続方法

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Publication number Priority date Publication date Assignee Title
FR2229264A5 (fr) * 1973-05-08 1974-12-06 Campenon Bernard Europe
DE3824107A1 (de) * 1988-06-27 1990-03-15 Werner Zapf Aus mehreren stahlbetonfertigteilen zusammengefuegter baukoerper in einer spannbetonbauweise
JPH0639764B2 (ja) * 1989-03-27 1994-05-25 ドーピー建設工業株式会社 間詰シースおよびこの間詰シースの橋桁への取り付け方法
JP3288357B2 (ja) * 1999-10-28 2002-06-04 株式会社ピー・エス プレキャストコンクリート梁と柱の目地の施工方法及び梁柱架構の構築方法

Non-Patent Citations (1)

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Title
See references of WO2006099900A3 *

Also Published As

Publication number Publication date
WO2006099900A2 (fr) 2006-09-28
WO2006099900A3 (fr) 2007-12-13
EP1861562B1 (fr) 2010-10-27

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