EP0129480B1 - Procédé et dispositif pour fabriquer des éléments de structure en béton et les éléments ainsi fabriqués - Google Patents

Procédé et dispositif pour fabriquer des éléments de structure en béton et les éléments ainsi fabriqués Download PDF

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Publication number
EP0129480B1
EP0129480B1 EP84401234A EP84401234A EP0129480B1 EP 0129480 B1 EP0129480 B1 EP 0129480B1 EP 84401234 A EP84401234 A EP 84401234A EP 84401234 A EP84401234 A EP 84401234A EP 0129480 B1 EP0129480 B1 EP 0129480B1
Authority
EP
European Patent Office
Prior art keywords
concrete
casing
tubes
windings
tube
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
EP84401234A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0129480A1 (fr
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
Application filed by Bouygues SA filed Critical Bouygues SA
Priority to AT84401234T priority Critical patent/ATE22836T1/de
Publication of EP0129480A1 publication Critical patent/EP0129480A1/fr
Application granted granted Critical
Publication of EP0129480B1 publication Critical patent/EP0129480B1/fr
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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying
    • 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
    • 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
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/08—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould

Definitions

  • the invention relates to the manufacture of new concrete structural elements.
  • An object of the invention is to provide a process for manufacturing under acceptable industrial conditions concrete structural elements, in particular beams, having a permissible working rate in the range 50-100 MPa (Megapascals) or higher, while the permissible working rate of a conventional prestressed concrete beam is around 10-20 MPa.
  • the hoop acts as a formwork in high resistance steel; it is stretched under the effect of compression and. when the concrete has set, it seeks to resume its initial state by exerting on the concrete a compression in transverse planes.
  • fresh axial pressure is exerted on the fresh concrete, that is to say perpendicular to the thickness of the concrete and parallel to the direction in which the concrete will work when it is in service, but it is however not excluded from exerting other additional pressures on the concrete.
  • the water is drained from the concrete by one or more tubes introduced into the concrete.
  • An object of the invention is also to provide a device for manufacturing structural elements according to a method according to the invention.
  • This device comprises a tubular envelope extending along an axis, means producing a hoop around the tube and means for compressing the concrete along the axis of the envelope during the setting of the concrete.
  • one or more cables are used which are passed through the concrete and with which one pulls towards the other pressure plates located at two opposite ends of the mass of fresh concrete, a technique that resists buckling of the tube during compression.
  • this or these cables are passed through one or more drainage tubes.
  • this prestressing will be preserved or reduced or replaced by prestressing cables passing through this or these tubes and ensuring the connection with the other elements of the concrete structure.
  • a cylindrical tube 1 for example made of thin sheet metal of the order of 2 mm or made of strong cardboard or plastic, the wall of the tube having multiple drainage perforations 4 and this is surrounded.
  • the winding 2 is in contact with the tube 1 and the winding 3 surrounds the winding 2, but they are not stretched.
  • Means are provided for fixing each end of a winding relative to the corresponding end of the other winding, for example by fixing the two corresponding ends on a means which also makes it possible to maintain these ends at one end of the tube 1.
  • a example of such a means is constituted by a circle which surrounds the tube 1 which is fixed in position relative to the tube 1 and to which are fixed the two corresponding ends of the hoop wires. This circle has been identified 6 in FIG. 1. It will be understood that there exists such a circle at each end of the tube 1.
  • longitudinal drains 5 which are preferably constituted by steel tubes generally thicker than the tube 1 when the latter is made of steel, for example a wall thickness of 4 to 6 mm.
  • the material and the thickness of the tubular casing 1 are chosen so that the tube distributes the forces and resists shearing by the hoop.
  • the concrete components are introduced into the space between the outer tube 1 and the drain (s) 5, or for example a mixture of aggregates, sand, water and cement, a mixture known per se.
  • the aggregates have, a priori, the same nature as the aggregates of a conventional concrete, but are preferably chosen from the high end of the aggregates of a concrete; rock aggregates resistant to values between 200-300 MPa (certain limestones, sandstone, etc ).
  • the binder can also be a binder such as those used for conventional concretes including resin-based binders.
  • the percentages of aggregates and binder can be the same as those of conventional concretes.
  • the mixture is compressed at an axial pressure 7 of 50-150 MPa before and during setting, until the concrete has hardened, part of the water is discharged through the orifices 4 of the outer tube 1 and by the drain (s) 5 (it should be noted that the orifices 4 can be simple pores).
  • the compression is carried out constantly or not, and continuously or not.
  • the invention is not limited to a beam of circular cross section and it extends for example to beams of regular polygonal cross section or not.
  • a beam according to the invention compared to a steel beam, is approximately half as heavy for an admissible work rate of the order of half that of steel and it has the considerable advantages of a possibility. of connections between beams by pouring a concrete and joining the whole structure by prestressing.
  • a typical application which falls within the scope of the present invention is the use of beams according to the invention to constitute three-dimensional trellises intervening in bridge structures and the like.
  • a structural element according to the invention can constitute a beam, a post, a tie rod and any other part of a concrete structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Producing Shaped Articles From Materials (AREA)
EP84401234A 1983-06-17 1984-06-15 Procédé et dispositif pour fabriquer des éléments de structure en béton et les éléments ainsi fabriqués Expired EP0129480B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401234T ATE22836T1 (de) 1983-06-17 1984-06-15 Verfahren und vorrichtung zum herstellen von strukturelementen aus beton und auf diese weise hergestellte elemente.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8310057 1983-06-17
FR8310057A FR2547526B1 (fr) 1983-06-17 1983-06-17 Procede et dispositif pour fabriquer des elements de structure en beton et les elements ainsi fabriques

Publications (2)

Publication Number Publication Date
EP0129480A1 EP0129480A1 (fr) 1984-12-27
EP0129480B1 true EP0129480B1 (fr) 1986-10-15

Family

ID=9289888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401234A Expired EP0129480B1 (fr) 1983-06-17 1984-06-15 Procédé et dispositif pour fabriquer des éléments de structure en béton et les éléments ainsi fabriqués

Country Status (8)

Country Link
US (1) US4529567A (xx)
EP (1) EP0129480B1 (xx)
JP (1) JPS6059269A (xx)
AT (1) ATE22836T1 (xx)
CA (1) CA1245038A (xx)
DE (1) DE3460945D1 (xx)
EG (1) EG17231A (xx)
FR (1) FR2547526B1 (xx)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840200A (en) * 1983-06-21 1989-06-20 General Atomics Prestressed tube
FR2568166B2 (fr) * 1984-07-27 1987-07-31 Bouygues Sa Dispositif pour fabriquer des elements de structure rectilignes en beton ayant un taux de travail admissible eleve
US4694622A (en) * 1984-07-27 1987-09-22 Bouygues Concrete structural elements, process and device for manufacturing these elements
JPS63120779A (ja) * 1986-11-11 1988-05-25 Toray Ind Inc 水なし平版用インキ組成物
US4771530A (en) * 1987-04-08 1988-09-20 General Atomics Application of inwardly directed prestressing pressure to concrete members
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
US6174595B1 (en) 1998-02-13 2001-01-16 James F. Sanders Composites under self-compression
KR100549024B1 (ko) * 1998-06-24 2006-02-02 스미토모 오사카 시멘트 가부시키가이샤 종이 이송롤러 장치 및 종이 이송롤러의 제조방법
DE10106040A1 (de) * 2001-02-09 2002-08-14 Laeis & Bucher Gmbh Hydraulische Presse zur Herstellung von Formkörpern
CN101892724B (zh) * 2010-07-06 2012-08-22 江苏弘盛建设工程集团有限公司 一种垫块加工机
CN110281351B (zh) * 2019-06-17 2020-10-02 三峡大学 密度均匀的膨胀混凝土桩施工装置及施工方法
CA3150000C (en) * 2019-10-02 2023-03-21 Rozbeh B. Moghaddam Top loaded bidirectional testing system and method of using the same
CN113417221B (zh) * 2021-07-24 2022-12-27 山西中海威轨道交通工程有限公司 一种用于桥梁断裂的急救装置
CN113894923A (zh) * 2021-09-30 2022-01-07 营口市瑞福来耐火材料有限公司 一种浸渍管整体成型生产方法以及整体成型浸渍管

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR778220A (fr) * 1934-09-10 1935-03-12 Procédé de moulage du béton et produits obtenus
US2210553A (en) * 1937-03-31 1940-08-06 Joseph E Miller Apparatus for producing reinforced concrete structures
US2579801A (en) * 1949-02-10 1951-12-25 Crom John Maurice Concrete pipe mold
US2550858A (en) * 1949-11-26 1951-05-01 Raymond Concrete Pile Co Apparatus and method for centrifugally molding tubular concrete elements
US3034192A (en) * 1957-07-11 1962-05-15 Ind Dev Co Method for producing molded articles of concrete and the like material
GB873743A (en) * 1957-09-25 1961-07-26 Percy Pius Collens Improvements in or relating to block making machines
US3234619A (en) * 1961-10-23 1966-02-15 Cen Vi Ro Pipe Corp Apparatus for making longitudinally prestressed concrete pipes
US3384942A (en) * 1965-11-17 1968-05-28 Internat Pipe And Ceramics Cor Apparatus for making prestressed concrete bodies
US3461507A (en) * 1967-04-26 1969-08-19 Comstock & Wescott Die for hot-pressing powdered metal
US3738786A (en) * 1967-05-18 1973-06-12 Bayshore Concrete Prod Corp Reinforcement of concrete structures
US3583047A (en) * 1969-08-20 1971-06-08 Nippon Concrete Ind Co Ltd Apparatus for manufacturing prestressed concrete poles,piles and the like
IL38059A (en) * 1970-11-09 1974-10-22 Uralita Sa Process and machine for the manufacture of tubes of fiber cement with orientation of the fibers
FR2157013A5 (xx) * 1971-10-13 1973-06-01 France Etat
SE7504404L (sv) * 1975-04-16 1976-10-17 Cementa Ab Sett att tillverka produkter innehallande hydrauliska bindemedel

Also Published As

Publication number Publication date
DE3460945D1 (en) 1986-11-20
FR2547526B1 (fr) 1986-03-21
ATE22836T1 (de) 1986-11-15
JPS6059269A (ja) 1985-04-05
JPH0474503B2 (xx) 1992-11-26
FR2547526A1 (fr) 1984-12-21
EP0129480A1 (fr) 1984-12-27
US4529567A (en) 1985-07-16
CA1245038A (en) 1988-11-22
EG17231A (en) 1990-10-30

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