EP0172093B1 - Strukturelemente aus zusammengepresstem Beton und Vorrichtung zu ihrer Herstellung - Google Patents

Strukturelemente aus zusammengepresstem Beton und Vorrichtung zu ihrer Herstellung Download PDF

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Publication number
EP0172093B1
EP0172093B1 EP85401541A EP85401541A EP0172093B1 EP 0172093 B1 EP0172093 B1 EP 0172093B1 EP 85401541 A EP85401541 A EP 85401541A EP 85401541 A EP85401541 A EP 85401541A EP 0172093 B1 EP0172093 B1 EP 0172093B1
Authority
EP
European Patent Office
Prior art keywords
concrete
structural elements
hoop
elements according
concrete structural
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
EP85401541A
Other languages
English (en)
French (fr)
Other versions
EP0172093A1 (de
Inventor
Pierre Richard
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.)
Bouygues SA
Original Assignee
Bouygues 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
Priority claimed from FR8411987A external-priority patent/FR2568292B1/fr
Priority claimed from FR8411988A external-priority patent/FR2568166B2/fr
Application filed by Bouygues SA filed Critical Bouygues SA
Priority to AT85401541T priority Critical patent/ATE47349T1/de
Publication of EP0172093A1 publication Critical patent/EP0172093A1/de
Application granted granted Critical
Publication of EP0172093B1 publication Critical patent/EP0172093B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor

Definitions

  • the invention relates to concrete structural elements having a very high permissible working rate, say at least 50-100 MPa (megapascals).
  • the tube and the hoop remain integral with the compressed concrete element obtained and it is therefore very important that this tube and this hoop be as inexpensive as possible.
  • a hoop is used, the wires of which constitute a tubular braid made of strips which are woven together so as to produce helices whose winding directions are reversed and which are included in a hardened synthetic resin.
  • the device shown in FIG. 1 comprises a tubular mold 1 to be filled with concrete and compression means for exerting axial compression on the concrete before the concrete is set.
  • These pressure means comprise for example two pressure plates 2, 2 'situated at the ends of the mold and means for pushing or pulling these plates towards one another.
  • These means are for example one or two cylinders 3, 3 '.
  • one of the plates is kept fixed and the other plate is pushed or pulled towards the fixed plate. It is convenient to use a cable 4 to pull the plates towards each other under the action of the jacks.
  • one or more longitudinal tubes 5 are provided in the concrete, for example for the passage of the cable 4, for the drainage of water from the concrete or for other uses.
  • the mold 1 consists of crossed plies of wires coated with a hardened synthetic resin.
  • the resin constitutes a means for mutually blocking the strands of the plies.
  • Figure 2 there is schematically shown a portion of such a hoop consisting of two or more plies 6, 7 crossed at about 90 ° and wound in inverted helices.
  • the wall of the tube is provided, preferably during manufacture, with small holes 8 to facilitate the dewatering of the concrete during its compression.
  • the resin constitutes a first protection of the hoop.
  • FIG 3 there is shown schematically a portion of a cylindrical hoop consisting of two bands 9, 10 braided together so as to form inverted turns crossed at about 90 ° and to form windows 8 between the ribbons.
  • the strips are mutually blocked, at least at the ends of the tube, by an adhesive agent.
  • Such a hoop has a double advantage: the braid itself constitutes the molding tube and the windows constitute the orifices for discharging the water from the concrete. This embodiment is therefore even more advantageous than that of the resin tube with plies included in the wall of the tube.
  • each strip consists of two superposed ribbons and at each crossing of the two strips, one of the strips of one strip passes between the two strips of the other strip.
  • the invention is not limited to a particular crossing angle of the wires, nor to a particular means for blocking the wires with respect to each other at the ends of the tube or elsewhere (glue, welding, anchoring, etc.) and n is not limited to the embodiments which have been described.
  • steel or carbon wires for example with a diameter of approximately 0.1 to 0.5 mm, or glass fibers are preferably used.
  • the resin tube or the braid is filled with liquid concrete and an axial compression of at least 50 MPa is exerted on this concrete before setting of the concrete: the frets lengthen under the effect of the thrust of the concrete caused by the axial pressure and, after the setting of the concrete, the frets tend to return to their initial dimension creating a biaxial stress transverse to the axis of the tube.
  • the mold used for the manufacture of the elements is a mold which remains incorporated in the molded element, it is particularly important that the cost of manufacturing this mold is as low as possible, which is achieved by the present invention.
  • the molded products are in particular characterized by the fact that the concrete constitutes a compressed mass surrounded by a hoop constituted by a tubular sheath 1 of crossed wires, in particular as described above with reference to FIGS. 2 and 3, which exerts on the concrete a constraint in transverse planes.
  • the concrete elements produced according to the invention are useful as bars, beams and other rigid structural elements, but a particularly advantageous application of the invention is the manufacture of concrete cables.
  • the cable is formed (FIG. 5) by arranging in line cable sections M molded in accordance with the invention and by assembling these sections by a common prestressing cable which passes longitudinally through all of the sections.
  • the same cable is used as that used to compress the concrete in the tube before it sets and which passes through the tubes 4.
  • the common prestressing cable can advantageously be made of carbon fibers coated with hardened synthetic resin.
  • the concrete cable has a diameter of 15 to 20 cm, possibly more.
  • the invention makes it possible in particular to manufacture a concrete cable for making anchor lines, stay cables and bridge carrying cables.
  • anchor lines in particular for offshore platforms, by means of steel tubes, having a diameter of the order of 40 to 60 cm and a wall thickness of 2 to 3 cm. . which are made up of sections of tubes welded or mechanically linked and wound on a reel.
  • the present invention makes it possible to replace these tubes with concrete elements which, for at least equivalent performance, can have a much smaller section, a significantly lighter weight, and no longer need to be assembled by welding or mechanically.
  • the cables of the present invention due to their smaller diameter, have a much weaker wave grip than that of steel tubes. Finally, these cables are much less susceptible to corrosion than steel cables.
  • the cable sections M can be separated by intermediate elements but while remaining assembled by the overall prestressing cable.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (8)

1. Bauelemente aus Beton mit einem Block aus verdichtetem Beton, der von einer rohrförmigen Bewehrung umgeben ist, die auf den Beton eine in transversalen Ebenen gerichtete Druckwirkung ausübt, wobei diese Bewehrung aus sich kreuzenden Drähten gebildet ist, die mindestens zwei spiralenförmige Wicklungen darstellen, deren Wicklungsrichtungen entgegengesetzt sind, und die zumindest an den Enden der rohrförmigen Bewehrung befestigt sind, dadurch gekennzeichnet, daß die Drähte der Bewehrung ein rohrförmiges Geflecht bilden, das aus Bändern (9, 10) besteht, die miteinander derart verflochten sind, daß sie Spiralen mit entgegengesetztem Wicklungssinn bilden und die in einem ausgehärteten Kunstharz eingeschlossen sind.
2. Bauelemente aus Beton nach Anspruch 1, dadurch gekennzeichnet, daß die Bänder (9, 10) sich in einem Winkel von ungefähr 90° kreuzen.
3. Bauelemente aus Beton nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß jedes Band aus zwei übereinander angeordneten Streifen besteht und daß bei jeder Kreuzung der beiden Bänder einer der Streifen des einen Bandes zwischen den zwei Streifen des anderen Bandes hindurch verläuft.
4. Bauelemente aus Beton nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Bänder aus Karbonfasern hergestellt sind.
5. Bauelemente aus Beton nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Bewehrung von einer Schutzhülle (13) umgeben ist.
6. Bauelemente aus Beton nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Block aus Beton mindestens eine in Längsrichtung verlaufende durchgehende Öffnung (5) aufweist.
7. Bauelemente aus Beton nach Anspruch 6. dadurch gekennzeichnet, daß diese Bauelemente in einer Reihe angeordnet und auf mindestens einem gemeinsamen Vorspannungsseil (4) aufgereiht sind, das durch die besagten Öffnungen (5) der Elemente verläuft und die gesamte Anordnung ein Betonseil bildet.
8. Bauelemente aus Beton nach Anspruch 7, dadurch gekennzeichnet, daß dieses Vorspannungsseil (4) aus Karbonfasern besteht, die von ausgehärtetem Kunstharz umschlossen sind.
EP85401541A 1984-07-27 1985-07-26 Strukturelemente aus zusammengepresstem Beton und Vorrichtung zu ihrer Herstellung Expired EP0172093B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401541T ATE47349T1 (de) 1984-07-27 1985-07-26 Strukturelemente aus zusammengepresstem beton und vorrichtung zu ihrer herstellung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8411987 1984-07-27
FR8411987A FR2568292B1 (fr) 1984-07-27 1984-07-27 Cable en beton et procede et dispositif pour le fabriquer
FR8411988A FR2568166B2 (fr) 1984-07-27 1984-07-27 Dispositif pour fabriquer des elements de structure rectilignes en beton ayant un taux de travail admissible eleve
FR8411988 1984-07-27

Publications (2)

Publication Number Publication Date
EP0172093A1 EP0172093A1 (de) 1986-02-19
EP0172093B1 true EP0172093B1 (de) 1989-10-18

Family

ID=26224086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401541A Expired EP0172093B1 (de) 1984-07-27 1985-07-26 Strukturelemente aus zusammengepresstem Beton und Vorrichtung zu ihrer Herstellung

Country Status (7)

Country Link
US (1) US4694622A (de)
EP (1) EP0172093B1 (de)
KR (1) KR890001989B1 (de)
CA (1) CA1259814A (de)
DE (1) DE3573750D1 (de)
HK (1) HK56290A (de)
SG (1) SG40090G (de)

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US4783940A (en) * 1985-12-28 1988-11-15 Shimizu Construction Co., Ltd. Concrete filled steel tube column and method of constructing same
JPH01256651A (ja) * 1988-04-01 1989-10-13 Shimizu Corp 鋼管コンクリート柱構造及びその施工方法
US4936006A (en) * 1989-03-01 1990-06-26 General Atomics Method of making prestressed concrete articles
US5065795A (en) * 1989-03-01 1991-11-19 General Atomics Prestressed concrete articles
US5263297A (en) * 1989-11-02 1993-11-23 Kim Joong S Structural member with a metal shell
US5457929A (en) * 1989-11-02 1995-10-17 Kim; Joong S. Structural member with a metal shell
JPH05332032A (ja) * 1992-05-29 1993-12-14 Tonen Corp コンクリート製電柱の補修方法
JP3192277B2 (ja) * 1993-05-14 2001-07-23 新日本製鐵株式会社 コンクリート柱
US5613334A (en) * 1994-12-15 1997-03-25 Cornell Research Foundation, Inc. Laminated composite reinforcing bar and method of manufacture
US6295782B1 (en) * 1999-06-11 2001-10-02 Edward Robert Fyfe Stay-in-place form
US6872030B2 (en) * 2002-01-25 2005-03-29 North Pacific Group, Inc. Wood support piling with composite wrappings and method for reinforcing the same
US6964809B2 (en) * 2002-02-15 2005-11-15 Pedro M. Buarque de Macedo Large high density foam glass tile
US8453400B2 (en) * 2003-07-22 2013-06-04 Pedro M. Buarque de Macedo Prestressed, strong foam glass tiles
US7311965B2 (en) * 2003-07-22 2007-12-25 Pedro M. Buarque de Macedo Strong, high density foam glass tile having a small pore size
US7695560B1 (en) 2005-12-01 2010-04-13 Buarque De Macedo Pedro M Strong, lower density composite concrete building material with foam glass aggregate
FI120482B (fi) 2006-06-08 2009-11-13 Suunto Oy Anturointijärjestely
DE102006047460A1 (de) * 2006-10-07 2008-04-10 Andreas Kufferath Gmbh & Co. Kg Verstärkungsvorrichtung für den Einsatz bei Bauteilen aus vergießfähigen, aushärtenden Materialien, wie Betonwerkstoffen, sowie damit hergestellte Bauteile
SE533634C2 (sv) * 2008-06-30 2010-11-16 Bo Blomqvist Ostagad kompositmast
US20110239564A1 (en) * 2011-04-15 2011-10-06 General Electric Company Apparatus, Composite Section, and Method for On-Site Tower Formation
KR101158522B1 (ko) * 2011-11-30 2012-06-21 한국건설기술연구원 슬롯을 사용한 무용접 방식의 콘크리트 충전 강관기둥 및 그 제조 방법
CN104797410B (zh) 2012-11-16 2017-03-15 康斯博格驱动系统第二公司 形成软管组件的方法
US11987981B2 (en) 2016-07-28 2024-05-21 Carboshield, Inc. Structural element reinforcement systems and methods
US11718965B2 (en) 2016-07-28 2023-08-08 Carboshield, Inc. Apparatus and method for reinforcing a partially submerged structural element
US11118364B2 (en) * 2016-07-28 2021-09-14 Carboshield, Inc. Structural element reinforcement systems and methods
AT520386B1 (de) * 2017-08-24 2019-10-15 Univ Wien Tech Verfahren zur Herstellung einer integralen Brücke und integrale Brücke
US11859386B2 (en) * 2019-08-19 2024-01-02 Raymond Alan Low Cable-supported structural assembly with flexible reinforced concrete structural element
US11408176B2 (en) * 2019-08-19 2022-08-09 Raymond Alan Low Multi-axially braided reinforcement sleeve for concrete columns and method for constructing concrete columns
US11619047B2 (en) * 2019-08-19 2023-04-04 Raymond Alan Low Braided multi-axial sleeve system used as a structural reinforcement for concrete columns and method for constructing concrete columns
US11976768B2 (en) 2022-04-07 2024-05-07 Carboshield, Inc. Composite reinforcement of tubular structures

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FR2480327B1 (fr) * 1980-04-11 1985-09-06 Ritter Mario Dispositif d'assemblage provisoire ou definitif d'elements prefabriques pour la construction
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FR2547526B1 (fr) * 1983-06-17 1986-03-21 Bouygues Sa Procede et dispositif pour fabriquer des elements de structure en beton et les elements ainsi fabriques

Also Published As

Publication number Publication date
KR890001989B1 (ko) 1989-06-07
EP0172093A1 (de) 1986-02-19
CA1259814A (en) 1989-09-26
DE3573750D1 (en) 1989-11-23
KR860000939A (ko) 1986-02-20
US4694622A (en) 1987-09-22
HK56290A (en) 1990-08-03
SG40090G (en) 1990-11-23

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