EP2090415B1 - Procédé de fabrication d'une poutre treillis et matériel adapté à sa mise en oeuvre - Google Patents

Procédé de fabrication d'une poutre treillis et matériel adapté à sa mise en oeuvre Download PDF

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Publication number
EP2090415B1
EP2090415B1 EP09290113.1A EP09290113A EP2090415B1 EP 2090415 B1 EP2090415 B1 EP 2090415B1 EP 09290113 A EP09290113 A EP 09290113A EP 2090415 B1 EP2090415 B1 EP 2090415B1
Authority
EP
European Patent Office
Prior art keywords
concrete
armature
mould
passive
gantry
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.)
Active
Application number
EP09290113.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2090415A1 (fr
Inventor
Luc Bresse
Chistophe Pacqueau
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.)
KP1 SAS
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KP1 SAS
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Publication date
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Priority to PL09290113T priority Critical patent/PL2090415T3/pl
Publication of EP2090415A1 publication Critical patent/EP2090415A1/fr
Application granted granted Critical
Publication of EP2090415B1 publication Critical patent/EP2090415B1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/06Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0062Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects forcing the elements into the cast material, e.g. hooks into cast concrete
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022Means for inserting reinforcing members into the mould or for supporting them in the mould
    • B28B23/024Supporting means

Definitions

  • the present invention relates to a method of manufacturing a concrete beam equipped with a wire mesh structure surmounting a generally prestressed concrete heel and the material suitable for the implementation of this method.
  • a truss-girder is conventionally manufactured by molding a concrete heel in a chute previously equipped with prestressing wires or cables stretched in this trough, and metal reinforcements which form the trellis structure surmounting the heel emerging from the surface. free of the concrete bath and divided by end forms.
  • the concrete poured into the trough coats the prestressing cables and the base of the truss reinforcement.
  • the reinforcements that form the lattice generally comprise three wire rods, which are connected by curved steels in the form of sinusoid. Each bent steel extends between a base spinning steel and the steel spinning top of the lattice.
  • the two basic stakes are those that are embedded in the concrete and caught in the heel of the beam.
  • the subject of the invention is therefore a method of manufacturing a truss-beam comprising a passive reinforcement in the form of a wire mesh and a prestressed concrete slab according to claim 1 and a material adapted to the implementation of this process according to claim 2.
  • the method of the invention of pouring the concrete before installing the welded mesh projecting from the concrete heel has several advantages.
  • the passive reinforcement is not likely to be displaced during casting by liquid concrete and its position in the prestressed heel is much better controlled.
  • the passive frame is not soiled by concrete pouring heel.
  • the setting and holding operation can be mechanized more easily, which guarantees the accuracy of the installation and the reproducibility of this precision.
  • the wedging elements are used to ensure the accuracy of the placement of the reinforcement in the heel of the beam.
  • the arrangement of the clamping riders makes it possible to force the passive reinforcement into position in the concrete bath until it is gripped.
  • Each jumper cooperates with the upper steel wire of the frame by means of a spring support member.
  • each passive reinforcement may consist of sections of stainless steel son shaped to be clipped onto the lower steel rods of the passive frame.
  • each of these molds defines an elongated concrete receiving tank 5 which encapsulates prestressing cables, all referenced C, which extend in the volume of the tanks being stretched by unrepresented traction devices provided at each longitudinal end of each cable and carried by a frame or table T which also supports the molds (see figure 4 ).
  • the concrete will be chosen so that the coating of the cables before the taking is of good quality. This will be for example a fluid concrete that removes or limits the vibration required when using a more traditional concrete. The vibration can also be implemented with the method of the invention.
  • the chutes have a very large longitudinal dimension, which makes it possible to manufacture several prestressed beams along a single group of tensioned cables and to save the tensioning mechanisms and the energy used to create this tension.
  • the consecutive beams are defined by end forms such as those shown in FIG. figure 2 . These may be traditional materials such as combs that can be traversed by the cables.
  • FIG. 1 and 2 thus illustrate the usual equipment necessary for the manufacture of a prestressed beam.
  • a passive reinforcement such as that represented in FIG. figure 3 .
  • this passive reinforcement is constituted by three strands in 12,13 and 14 which are joined by two corrugated steel wires 15 and 16, welded by the peaks of their corrugations or in the vicinity thereof, for one, alternately to the wire 12 and the wire 14 and for the other to the wire 13 and to the wire 14.
  • the corrugations are substantially sinusoidal and extend in convergent planes on the wire 14 which forms the upper wire of the frame or lattice 11.
  • the method generally comprises a vibrating phase of the poured concrete during which the position of the passive reinforcement can be disturbed. This poorly controlled final position can lead to manufacturing defects that disqualify the final product, in particular for excessive deformations.
  • the conventional method is improved by several modifications, one concerning its unwinding, the others relating to the apparatus used during manufacture.
  • the invention proposes to proceed with the casting of the concrete before the establishment of the structure 11.
  • the concrete being in place, still liquid or pasty, taking having not yet taken place, it can be vibrated if necessary.
  • the passive reinforcement is then placed by immersing its base, the strands 12 and 13, in the bath and maintaining the reinforcement in a determined position relative to the bath until the complete setting of the concrete.
  • the armature is equipped a base in the form of a series of centering wedges and support of its base relative to the wall of each mold.
  • These wedges are here in the form of stainless steel wires 17 which are folded to be clipped regularly distributed along the wires 12 and 13 of the reinforcement 11, to center this reinforcement with respect to the walls of the mold both laterally and at the same time. altitude, cooperating with these at the lower corners of the chute (see figure 3 ).
  • the figure 4 illustrates an apparatus for ensuring the position of the reinforcements in the tanks of liquid concrete.
  • These are jumpers 20, also regularly distributed along the beam (in any case in number at least equal to two, at each end, close to formwork end) which span across a series 1-4 of chutes placed side by side between two fastening members 21,22 secured to the table T.
  • These bodies 2 and 22 are in the form of tabs for retaining a first leg 20a of each rider 20 when it bears on the frames 11 and is forced to press them when the rider 20 is forced downward by hooking an end flange 20b under the tab 22.
  • the support of the rider 20 on the armatures 11 is achieved by means of V-shaped pieces 23 overlapping the upper wire 14 of each armature.
  • Each piece 23 is carried by a cross member 20c of the rider 20 by means of an elastically compressible attachment symbolized by a vertical pin 24 secured to each V-piece 23 and sliding in the cross member 20c and a spring tending to bias downwardly. pawn 24.
  • the shims 17 described above are replaced by suspensors, for example wire, which are clipped under the lower threads 12 and 13 and which rest on the cables C prestressing, including the highest ones in the mold.
  • suspensors for example wire
  • no point of these wedges is flush with the surface of the heel which may be of interest from the point of view of corrosion.
  • the use of stainless steel son is not limiting.
  • the shims can be provided in any stainless material, including synthetic, capable of supporting the loads involved in this structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
EP09290113.1A 2008-02-18 2009-02-17 Procédé de fabrication d'une poutre treillis et matériel adapté à sa mise en oeuvre Active EP2090415B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09290113T PL2090415T3 (pl) 2008-02-18 2009-02-17 Sposób wytwarzania belki kratowej i sprzętu dostosowanego do jego zastosowania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0800851A FR2927565B1 (fr) 2008-02-18 2008-02-18 Procede de fabrication d'une poutre treillis

Publications (2)

Publication Number Publication Date
EP2090415A1 EP2090415A1 (fr) 2009-08-19
EP2090415B1 true EP2090415B1 (fr) 2015-01-14

Family

ID=39884334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09290113.1A Active EP2090415B1 (fr) 2008-02-18 2009-02-17 Procédé de fabrication d'une poutre treillis et matériel adapté à sa mise en oeuvre

Country Status (5)

Country Link
EP (1) EP2090415B1 (es)
ES (1) ES2532628T3 (es)
FR (1) FR2927565B1 (es)
PL (1) PL2090415T3 (es)
PT (1) PT2090415E (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106182403A (zh) * 2016-08-29 2016-12-07 洛阳中冶重工机械有限公司 钢筋网笼吊架循环输送系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009201489B2 (en) * 2008-04-18 2014-03-20 David Allan Burke A method for the manufacture of concrete panels
CN104647587B (zh) * 2015-02-12 2017-02-15 河南省公路工程局集团有限公司 组合套打式钢结构制梁台座及预制箱梁组合套打方法
FR3051007B1 (fr) * 2016-05-04 2018-05-25 Fabemi Qualite Procede de fabrication en serie de poutrelles en beton precontraint a raidisseur pour systeme de plancher a poutrelles et entrevous
CN113172753B (zh) * 2021-03-17 2023-08-08 山东联丰新型建材机械有限公司 一种防松动人造石板生产网架挂钩框定处理装置
BE1029851B1 (nl) * 2021-10-15 2023-05-15 Betonwerken Vets En Zonen Nv Werkwijze en tafel voor vervaardiging van een betonwelfsel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261544A (en) * 1979-03-12 1981-04-14 Addison Elvin R Element locator for concrete
FI64969C (fi) * 1982-03-16 1984-02-10 Redecon Oy Foerfarande foer framstaellning av en sammansatt konstruktion
FR2536696B1 (fr) * 1982-11-26 1986-01-10 Guerin Gabriel Procede de fabrication de plaques minces moulees avec armature en reseau et inserts partiellement enrobes et installation pour sa mise en oeuvre
FR2865228B1 (fr) * 2004-01-15 2006-03-24 Soprel Procede de fabrication de dalles alveolees en beton precontraint equipees de boucles de levage et de manutention ainsi que dalles obtenues suite a la mise en oeuvre de ce procede

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106182403A (zh) * 2016-08-29 2016-12-07 洛阳中冶重工机械有限公司 钢筋网笼吊架循环输送系统

Also Published As

Publication number Publication date
ES2532628T3 (es) 2015-03-30
FR2927565B1 (fr) 2012-11-16
PL2090415T3 (pl) 2015-06-30
EP2090415A1 (fr) 2009-08-19
FR2927565A1 (fr) 2009-08-21
PT2090415E (pt) 2015-03-30

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