EP1818149A1 - Verfahren zur Herstellung eines Betonträgerformwerkzeugs und entsprechender Betonträger - Google Patents

Verfahren zur Herstellung eines Betonträgerformwerkzeugs und entsprechender Betonträger Download PDF

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Publication number
EP1818149A1
EP1818149A1 EP07290130A EP07290130A EP1818149A1 EP 1818149 A1 EP1818149 A1 EP 1818149A1 EP 07290130 A EP07290130 A EP 07290130A EP 07290130 A EP07290130 A EP 07290130A EP 1818149 A1 EP1818149 A1 EP 1818149A1
Authority
EP
European Patent Office
Prior art keywords
contention
concrete
walls
lateral
sole
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.)
Withdrawn
Application number
EP07290130A
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English (en)
French (fr)
Inventor
Yves Brugeaud
Daniel Pestrin
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.)
Conseil Services Investissements
Original Assignee
Conseil Services Investissements
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 Conseil Services Investissements filed Critical Conseil Services Investissements
Publication of EP1818149A1 publication Critical patent/EP1818149A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • 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
    • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • B28B7/0035—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
    • B28B7/0041—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding the sidewalls of the mould being moved only parallelly away from the sidewalls of the moulded article

Definitions

  • the present invention relates to a method for producing a concrete beam, a molding tool, and a corresponding concrete beam and more particularly to a crossing crosswork or roofing.
  • prefabricated concrete beams to cover trenches allowing the passage of traffic lanes.
  • These beams comprise a sole having an upper surface projecting from which extends longitudinally a mass allowing them to have a relatively large inertia.
  • the beams are joined to each other by the side faces of their sole, which allows the obtaining of a flat underside which promotes the evacuation of smoke in case of fire in the trench.
  • the method comprises the step, prior to casting, of adjusting the position of the lateral walls of contention along at least one direction parallel to the table and, advantageously, the adjustment of the position comprises a modification phase from a distance separating the lateral walls of contention and / or a phase of modification of an angle formed by at least one of the side walls of contention with a longitudinal direction of the enclosure.
  • the embodiment of the beam by molding also allows the insertion of transverse reinforcing bars.
  • the invention also relates to a molding tool comprising a frame which is arranged to define an enclosure capable of containing the concrete and which comprises a table on which are mounted movably between a molding position and a demolding position at least two walls. lateral compression of the concrete, the side walls of compression molding position being separated, at the upper surface of the sole, by a space extending along the side walls of contention.
  • At least one of the lateral walls of contention is connected to the table by a frame comprising substantially parallel frames and hingedly connected to the sidewall contention to form a parallelogram deformable parallel to the table.
  • the lateral contention wall thus moves parallel to itself and parallel to the table when it is moved between its molding position and its demolding position. Such movement limits the risk of interference of the molded beam with the sidewall of contention. There is thus greater freedom in the design of the beam and in that of the mold.
  • the tooling is relatively compact and the displacement of the wall of contention parallel at the table is easier to achieve than a rocking movement that requires to bear a portion of the weight of the wall of contention.
  • each frame is provided with a member for adjusting one dimension of the frame parallel to the table.
  • the adjustment of the size of the frames makes it possible to adjust, on the one hand, the distance between the lateral walls of contention and, on the other hand, the angle that the side walls of contention form between themselves or with a longitudinal direction of the enclosure. .
  • the beam of the mass comprising a longitudinal groove having flanks opposite and a bottom
  • the tooling comprises a central core comprising two separate lateral walls of contention, at the bottom of the groove, by a space extending along the side walls of contention.
  • the separation of the side walls of the core makes it possible to simplify the structure of the core while allowing a great freedom of variation of the geometry of the latter.
  • an adjustable spacing device connects the lateral walls of contention of the core and, preferably, the adjustable spacing device comprises elements of variable length which are arranged to be adjustable in length individually and which are substantially perpendicular to the walls lateral restraints and distributed along them.
  • the lateral contention walls of the core are suspended on mounted carriages. to slide on porches spanning the table.
  • the invention also relates to a beam obtained by the method of the invention.
  • a first embodiment of the invention relates to a concrete beam comprising a sole having a projecting upper surface of which extends longitudinally a solid mass having a free end provided with at least one wing extending along the solid mass in parallel at the sole, the solid comprising, preferably, two longitudinal ribs facing each rib having a free end provided, opposite the other rib, a wing having a free edge set back from the sole.
  • the wings will form the upper face of the cover. This saves time and concrete on the site.
  • a second embodiment of the invention relates to a concrete beam comprising a sole having a projecting upper surface of which extends longitudinally at least one solid, the sole and the solid having lateral faces, at least two of the lateral faces. forming an angle between them.
  • the beam according to the invention comprises a sole 2 having side faces 3 and an upper surface 4 projecting from which extends a solid consisting of two ribs 5 delimiting between they have a groove generally designated 6 having sidewalls 7 facing and a bottom 8 formed by a portion of the upper surface 4 of the sole 2.
  • the ribs 5 have external faces 9 and a free end provided with a wing 10 s projecting from the outer face 9 parallel to the sole 2.
  • the wings 10 have a free end which is set back from the lateral faces 3 of the sole 3 and which is provided with a longitudinal rabbet 11.
  • the lateral faces 3 are convergent here, as are the external faces 9 and the flanks 7.
  • the aforementioned parts of the beam 1 are made of concrete.
  • the groove 6 is filled with an aerated mortar.
  • Prestressing elements 14 extend longitudinally in the sole 2 and in the lower part of the ribs 5.
  • the beams 1 In use for producing a cover, the beams 1 have their ends placed on support walls and are joined by the lateral faces 3 of their sole 2. Tabs 15 are arranged in the rabbets 11 to form a lost formwork. Concrete is then poured on the upper part of the beams 1 to cover the upper faces of the flanges 10 and the aerated mortar, and to drown the projecting portions of the transverse reinforcing bars 13.
  • the beam 1 comprises, as previously, a sole 2, ribs 5, wings 10, transverse reinforcing bars 12, 13.
  • the beam further comprises transverse hitching irons 16 extending in bores made through the base of the ribs 5 and having curved ends 17 projecting from the lateral faces 3 of the sole 2.
  • a concrete of keying is poured into the lower part of the groove 6 to maintain in position the transverse coupling bars 16. This keying concrete is itself covered with an aerated mortar.
  • the upper lateral edges of the flanges 3 comprise longitudinal grooves 18.
  • the beams 1 In use for making a cover, the beams 1 have their ends resting on support walls and tabs 19 are deposited in the rabbets 18 to form lost forms.
  • a keying concrete is poured between the ribs 5 facing the adjacent beams 1 to cover the ends Curved 17 transverse hitching irons 16. Note that the space between the free ends of the wings 10 is greater than in the embodiment described above to allow the introduction of the keying concrete between them.
  • a tongue 15 is then disposed in the rabbets 11 to form a lost formwork and concrete is poured on the upper parts of the beams 1 to cover the upper faces of the flanges 10, the aerated mortar and the projecting portions of the transverse reinforcing bars 13.
  • the tool according to the invention comprises a table 101, of longitudinal direction 102, spanned at regular intervals by gantries, generally designated 103, having uprights 104 supporting a spar 105.
  • the frames 106 On each upright 104 are hinged frames 106 extending perpendicular to the table 101.
  • the frames 106 comprise telescopic portions 107, 108.
  • the portion 107 is hinged to the upright 104 while the portion 108 is connected by a hinge to contention sidewall 109.
  • a set screw 111 extends between the portions 107 and 108 of the frame 106 to adjust the relative position of the portions 107 and 108.
  • the contention sidewall 109 includes a vertical wall member 109.1 having a upper edge connected to a wall member forming an L-shaped rim 109.2 which is substantially perpendicular to the vertical wall member 109.1.
  • the vertical wall element 109.1 has a lower edge to which is articulated a substantially horizontal wall element formed by a pad 109.3.
  • the vertical wall element 109.1 is intended to define the outer face 9; the rim L 109.2 is intended to define the wing 10; and the pad 109.3 is intended to define the longitudinal part
  • the angle between the pad 109.3 and the vertical wall member 109.1 is adjustable via a set screw 110 which extends from the portion 108 of the frame 106 to bear on the pad 109.3.
  • Each compression sidewall 109 is thus connected to several uprights 104 by the frames 106 which are substantially parallel and thus form a deformable parallelogram parallel to the table 101.
  • the lateral contention wall 109 is thus movable parallel to itself between a position molding (shown in solid lines in Figure 1) and a demolding position (shown in double dashed line in Figure 1.
  • the tooling 100 further comprises lateral walls of contention 129 to define the lateral faces 3 of the sole 2.
  • Each lateral side of contention 129 is articulated on an end of arm 121 mounted to slide and pivot on studs 122 integral with the Table 101.
  • the arms 121 are substantially parallel to each other and define with the sidewall contention 129 a parallelogram deformable parallel to the table 101 so that the sidewall contention 129 is movable between a molding position (shown in FIG. Figure 1) and a position of demolding (not shown) by moving parallel to itself.
  • the sliding of the arm 121 on the pad 122 makes it possible to adjust the position of the compression lateral wall 129 with respect to the pads 122.
  • the arms 121 are locked in position by clamping screws 123.
  • the lateral compression wall 129 is separated by a space of the pad 109.3 of the lateral contention wall 109 at the level of the upper surface 4 of the sole 2.
  • the tooling further comprises a central core generally designated 130 which is suspended from the frames 103 and which comprises two lateral contention walls 139 each defining one of the flanks 7 of the groove 6 and an adjacent longitudinal portion of the bottom 8 thereof.
  • Each contention side wall 139 includes a vertical wall member 139.1 having a lower edge to which a shoe 139.2 is attached. It will be noted that in the molding position (as shown in the figures), the free edges of the pads 139.2 are separated by a space at the central portion of the bottom 8 of the groove 6.
  • Each side wall element 139 has an upper edge connected to a carriage 131 mounted to slide on the spar 105.
  • Each carriage comprises a yoke having facing wings provided with rolling-mounted rollers for rolling on horizontal lateral surfaces of the spar 105 of the gantry 103.
  • Adjustable gap generally designated 132, connects the vertical wall members 139.1 to each other.
  • the adjustable spacing device 132 comprises variable length members 133, here screw jacks, which are individually adjustable in length and which are substantially perpendicular to the vertical wall members 139.1. The ends of the variable length members 133 are hinged to the vertical wall members 139.1.
  • the table, the lateral contention walls 109, 129 and 139 define an enclosure capable of receiving the concrete.
  • the molding process begins with the positioning of the reinforcing bars 12 and 13 and the stress elements 14 on the table 101.
  • variable length elements 133 allow to adjust not only the spacing of the lateral walls of contention 139 but also the angle formed there between.
  • the concrete is then poured through the openings defined between the wall members 109.3 and 109.1.
  • the spaces existing between the lateral walls of contention have a sufficiently small width to retain the concrete.
  • the skates 109.3 take up the thrust force exerted by the concrete during the casting and transmit it to the table via the screws 110, the frames 106 and the frames 103.
  • the pads 139.2 take up the thrust force of the concrete and transmit it at the table 101 via the vertical wall elements 139.1, the trolleys 131 and the gantries 103.
  • each rim L 109.2 To take up the forces exerted by the concrete on the L 109.2 edges, it is planned to connect the free end of each rim L 109.2 to the longitudinal members 105 of the gantries 103 by screws 112 engaged in carriages 113 similar to the carriages 131 so that the free end of each L-rim 103 is suspended from the gantry 103. plan to articulate the L 109.2 flanges to the vertical wall members 109.1 and to adjust the angle between them by the screws 112.
  • the beam to be produced must comprise hitching irons 16
  • tubes for example made of thermoplastic material, are positioned in the enclosure before pouring the concrete to form in the ribs 5 the bores intended to receive the hitching irons. 16.
  • the horseshoes 16 in one or more pieces, are slid into the bores and positioned relative to the beam. The keying concrete is then poured into the groove 6.
  • the aerated mortar is then poured into the groove 6.
  • the beams 1 may have side faces 3, external faces 9 and / or sides 7 parallel to each other or forming non-zero angles between them.
  • the beams 1 may have only one rib or single wing.
  • the wings 10 may have a free end which is set back from the lateral faces 3 of the sole 3 or in line with them.
  • the groove 6 can be filled with an aerated mortar or be empty.
  • the tooling can be modified accordingly.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
EP07290130A 2006-02-10 2007-02-01 Verfahren zur Herstellung eines Betonträgerformwerkzeugs und entsprechender Betonträger Withdrawn EP1818149A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0601196A FR2892740A1 (fr) 2006-02-10 2006-02-10 Procede de realisation d'une poutre en beton, outillage de moulage et poutre en beton correspondante

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EP1818149A1 true EP1818149A1 (de) 2007-08-15

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FR (1) FR2892740A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104924419A (zh) * 2015-06-02 2015-09-23 中铁大桥局集团第五工程有限公司 一种大体积混凝土预制构件施工用自动开合模板系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101477B (de) * 1959-06-23 1961-03-09 Gruen & Bilfinger Ag Verfahren zum Ausgleichen der Verformung von Lehrgeruesten
GB1202320A (en) * 1967-07-18 1970-08-12 Philipp Schreck Method of manufacturing prestressed concrete beams, and apparatus for the performance of the method
NL7306389A (de) * 1972-05-08 1973-11-12 Span-Deck Inc
US4156517A (en) 1976-02-14 1979-05-29 Rampf Kg Formen Beam form

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101477B (de) * 1959-06-23 1961-03-09 Gruen & Bilfinger Ag Verfahren zum Ausgleichen der Verformung von Lehrgeruesten
GB1202320A (en) * 1967-07-18 1970-08-12 Philipp Schreck Method of manufacturing prestressed concrete beams, and apparatus for the performance of the method
NL7306389A (de) * 1972-05-08 1973-11-12 Span-Deck Inc
US4156517A (en) 1976-02-14 1979-05-29 Rampf Kg Formen Beam form

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104924419A (zh) * 2015-06-02 2015-09-23 中铁大桥局集团第五工程有限公司 一种大体积混凝土预制构件施工用自动开合模板系统

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FR2892740A1 (fr) 2007-05-04

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