EP0283391A2 - Verfahren zum Realisieren einer Betonstruktur, wie Brückendecken und Vorrichtung zur Anwendung - Google Patents

Verfahren zum Realisieren einer Betonstruktur, wie Brückendecken und Vorrichtung zur Anwendung Download PDF

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Publication number
EP0283391A2
EP0283391A2 EP88400579A EP88400579A EP0283391A2 EP 0283391 A2 EP0283391 A2 EP 0283391A2 EP 88400579 A EP88400579 A EP 88400579A EP 88400579 A EP88400579 A EP 88400579A EP 0283391 A2 EP0283391 A2 EP 0283391A2
Authority
EP
European Patent Office
Prior art keywords
formwork
panels
frame
base
shoring
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
EP88400579A
Other languages
English (en)
French (fr)
Other versions
EP0283391B1 (de
EP0283391A3 (en
Inventor
Jean-Louis Le Mao
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.)
Campenon Bernard SGE
Original Assignee
Campenon Bernard SGE
Campenon Bernard BTP
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 Campenon Bernard SGE, Campenon Bernard BTP filed Critical Campenon Bernard SGE
Priority to AT88400579T priority Critical patent/ATE80195T1/de
Publication of EP0283391A2 publication Critical patent/EP0283391A2/de
Publication of EP0283391A3 publication Critical patent/EP0283391A3/fr
Application granted granted Critical
Publication of EP0283391B1 publication Critical patent/EP0283391B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/483—Supporting heads
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G2025/006—Heads therefor, e.g. pivotable

Definitions

  • the present invention relates to a method for making a concrete structure having a roughly horizontal lower surface and at least partly spaced from the ground, such as a bridge deck.
  • the traditional technique for making relatively small bridges, for example for road crossings, comprises the following stages: - We first build a shoring structure, consisting of "towers" in metal frame or not, resting on the ground and rising to a height slightly lower than the level of the deck that we want to establish. On this frame, screw systems are provided, with vertical displacement, for leveling and formwork. A series of horizontal beams is placed on these screw systems, and horizontal beams are placed transversely to these beams. On the bastaings, formwork plates are laid, generally made of plywood; - the concrete is then poured onto the formwork, it is allowed to set, then disassembly is carried out.
  • Another known method to reduce the duration of the operations, consists in constituting the towers with ladder-shaped elements, which are brought horizontally, straightened on the site and joined together by means of a certain number of horizontal crosspieces.
  • the dismantling of this frame is done fairly quickly: we remove the horizontal crosspieces and rotate the elements in the form of a ladder around a horizontal axis to bring them back to the ground.
  • This solution does not eliminate the operations consisting in removing one after the other the formwork elements, the bastaings if they are not integral with the formwork elements, and the beams.
  • the present invention aims to provide a process, usable in particular, for making bridges, and which allows faster assembly and especially disassembly considerably simplified and accelerated.
  • the method according to the invention comprises the use of formwork panels provided, on their underside, with a rigid frame equipped with fastening means such as screws and nuts with the similar frame of an adjacent panel, and at least one rectilinear reinforcement, parallel to one of the sides of the frame, and these panels are placed with these parallel reinforcements between them and directed towards the place where the assembly of all the formwork panels will take place.
  • rollers are used associated with cam-type locking means, arranged to immobilize the formwork panels relative to the frame by lifting them above the rollers, and to release, when the time comes, the formwork panels by resting them on the rollers.
  • the invention also provides a formwork panel specially usable for implementing the above process, and which comprises: - a plate made of unfilled cell material, with two layers of coating made of waterproof material; - reinforcing ribs of unfilled cell material; a rigid frame on the edges of the plate, with a frame carrying means of connection with the frames of adjacent panels, the plate, the ribs and the frame being integral with each other.
  • the material with unfilled cells may consist of a honeycomb type structure, with cells perpendicular to the plane of the plate.
  • this material consists of a rigid foam, with firm pores, for example of polyurethane.
  • Such a material is in fact easier to implement, the honeycomb type structure, since there are no special precautions to be taken to prevent the coating material from entering the cells. This advantage generally compensates for a slightly higher weight.
  • the invention also provides a formwork and bearing device, specially usable in the implementation of the above method, and comprising: - a yoke formed by a base and two sides; - a mobile support plate in the screed perpendicular to the base; - A means capable at will of maintaining the support plate in a first position away from the base and of letting it move to a second position closer to the base; - at least one roller mounted in the yoke, with an axis parallel to the base, and the top of which is more moved away from it as the outer face of the support plate in its second position; and - Connection means of the base of the yoke with a support structure, these connection means comprising means for moving the base approximately perpendicular to its plane and a ball joint making it possible to vary within certain limits the orientation of the base with respect to the support structure.
  • the means capable of holding and allowing the support plate to move include a cam mounted in the yoke and acting on the internal face of the support plate.
  • the cam carries a roller which supports the support plate in the first position away from the base and facilitates the start of the movement of the cam from this first position to the second.
  • the formwork panel shown in FIG. 1 comprises a flat plate 1, of "honeycomb” type structure, with cells oriented perpendicular to its plane, with a layer of waterproof outer coating and a layer of waterproof inner coating, the material of the outer covering layer being also chosen to have surface properties such that it is not necessary to use formwork oil between the panel and the concrete.
  • the panel 1 is stiffened, on its four sides, by a rigid frame 2, made of metal, which carries on each of its sides reinforcements 3, having threaded holes 4, in which it is planned to insert screws to secure two elements adjacent to each other.
  • the holes 4 are eliminated and the assembly of two elements between them is carried out using pliers which bear on the frames of the two elements.
  • the panel 1 also carries, on its underside, two robust ribs 5, parallel, and of height greater than that of the frame 2.
  • ribs as for the plate 1, a material with a “honeycomb” type structure was chosen, the cells being oriented perpendicular to the plane of the panel 1, that is to say parallel to the cells of the plate 1.
  • a rigid polyurethane foam, with firm pores, stabilized, with a density of approximately 90 kg / m3 has been chosen for the plate 1 as for the ribs 5.
  • the manufacturing of the panels is as follows:
  • the resin panels of the Gelcoat type are of different color depending on whether they cover a lower face or an upper face of the panel.
  • the ribs 5 which support the panels and the concrete poured thereon. Their robustness is calculated accordingly. It should be noted that the self-weight of the complete panels is low, of the order of 30 kg / m2 or less, the main load therefore consists of the weight of concrete: approximately 250 kg / m2 and per decimetre of thickness.
  • the shoring structure 9 is built, preferably according to the known method which consists in using elements in the form of a ladder 10, which is laid flat on the ground, then that it is straightened vertically and connected together by connecting elements 11.
  • the shoring structure carries formwork and rolling devices which will now be described in detail using FIG. 3, before continuing with the description of the process of the invention.
  • formwork and rolling devices are indeed a very important element for the implementation of the process.
  • a yoke 12 is formed of a base 13 and two sides 14, parallel and identical, only one of which is shown.
  • the yoke is shown in the use position, that is to say with its horizontal base and its vertical sides.
  • Two load bearing 15 parallel are mounted in the yoke, their shafts 16 being in the same horizontal plane, that is to say parallel to the base 13.
  • the flanks each have, in addition, two vertical slots 17, which serve to guide a support plate 18, thanks to pins 19 which penetrate into the slots 17.
  • This support plate, parallel to the base can thus move vertically between an upper position shown in solid lines, and a lower position shown in dashes. In the lower position, the upper face of the support plate 18 is slightly below the plane defined by the tops of the rollers 15, while it is largely above the same plane when it is in the upper position.
  • a cam 20 For the movement of the support plate, a cam 20 has been provided, constituted by a cylindrical surface with a generator perpendicular to the plane of the sides 14, and whose guide curve is a spiral.
  • the cam 20 is mounted in the yoke via a shaft 21, of larger diameter than the shafts 15 of the rollers 16, we will see why later.
  • the shaft 21 is integral with a control lever 22, outside the yoke 12.
  • the cam 20 engages the underside of the support plate 18, and the rotation of the lever 22 causes the support plate to pass from the upper position to the lower position, and vice versa.
  • the spacing between the two plates 14 is greater than the width of the ribs 5, so that these can penetrate the yoke to rest on the rollers 15.
  • the height of the plates 14 above the plane of the tops of the rollers 15 is less than the height of the ribs 5, reduced by the height of the reinforcements 3.
  • the lower part of the base 13 of the yoke 12 has a recess in the form of a portion of a sphere, into which enters a ball joint 23, mounted on a threaded rod 24, which passes through a "jack nut" 25, provided with handles 26 , and which rests on the end of a tube 27 into which the rod 24 enters.
  • the shoring structure comprises a frame with vertical tubes, it is one of them which constitutes the tube 27 If this structure is formed of horizontal beams, the tube 27 is a special tube carried by these beams.
  • the ball 23 being immobilized in rotation either by hand or by friction in the recess of the base 13, the actuation of the handles 26 makes it possible to raise the yoke to the desired height, while the presence of the ball allows the adaptation to slopes or overhangs.
  • FIG 4 shows a slightly simplified variant of the device of Figure 3.
  • the equivalent parts have the same references in both figures.
  • the cam 20 instead of having a spiral-shaped section, has an elliptical section: It consists of two identical plates, on either side of the plane of the right half of the figure, these two elliptical-shaped plates being mounted, eccentrically on the same shaft 21. At their most distant end from this shaft, the plates 20 carry a roller 30 which goes slightly beyond their end, and which in the position upper supports the support plate 18.
  • the handle 22 to move the cam from its upper position, the latter slides directly against the support plate 18, and its movement is facilitated at first by the presence roller 30, interposed between it and the support plate.
  • a fixed stop 31 and a lockable stop 32 are provided which immobilize the handle 22 in the situation corresponding to the upper position of the cam 20.
  • FIG. 3 Another difference from FIG. 3 is that the two bearing bearings 15 have been replaced by a single bearing 33 mounted idly on the shaft 21, between the two elliptical parts which form the cam 20.
  • the bearing 33 passes through a slot 34 of the carrier plate 18 to support the formwork panel.
  • the tubes 27 are put in place, if necessary, the rods 24 with their nut 25, and the yokes 12, in sufficient quantity to support the formwork.
  • the spacing of the yokes is equal to the distance between the successive ribs 5, carried either by the same panel 1, or by two adjacent panels assembled.
  • the spacing of the yokes is such that each rib is supported by at least one yoke, preferably at least two.
  • the panels 1 are then put in place by making them rest by their ribs 5 on the support plates 18. This positioning is done, normally, with the crane 28 of the site.
  • the panels 1 are then joined together using screws inserted in the holes 4.
  • This has the effect of constituting a continuous and sealed formwork surface, substantially horizontal, that is to say with possibly a slight inclination, complies with the instructions of the owner, weak enough to allow the pouring of concrete.
  • This joining of the panels also has the result of allowing subsequent movements of the formwork in a single block, as will be seen below.
  • the formwork as a whole, is then moved towards the edge of the bridge, using winches or jacks bearing on the shoring structure.
  • a first row of panels has passed the edge of the bridge, that is to say that it is no longer below the deck 29 which has just been poured, these panels are separated from the rest of the formwork, and at the same time, these panels are separated from the rest of the row.
  • the operation can start before the end of the trip. Using the crane 28, the panels are easily removed. If desired, several panels can be removed from the row at the same time, and only separated from the ground.
  • the shoring structure can then be dismantled in a known manner. Its dismantling can also begin before the end of the formwork removal.
  • the cam device for moving the support plate can be replaced by a system with horizontally sliding corners, or by a system with screw jacks or the like.
  • the method of fixing the panels together can also be different from that described, and include, for example, quick-clamping systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Bridges Or Land Bridges (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Sewage (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP88400579A 1987-03-17 1988-03-11 Verfahren zum Realisieren einer Betonstruktur, wie Brückendecken und Vorrichtung zur Anwendung Expired - Lifetime EP0283391B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400579T ATE80195T1 (de) 1987-03-17 1988-03-11 Verfahren zum realisieren einer betonstruktur, wie brueckendecken und vorrichtung zur anwendung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8703633A FR2612534B1 (fr) 1987-03-17 1987-03-17 Procede pour confectionner une structure en beton, telle qu'un tablier de pont, et appareillage pour sa mise en oeuvre
FR8703633 1987-03-17

Publications (3)

Publication Number Publication Date
EP0283391A2 true EP0283391A2 (de) 1988-09-21
EP0283391A3 EP0283391A3 (en) 1989-11-23
EP0283391B1 EP0283391B1 (de) 1992-09-02

Family

ID=9349061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400579A Expired - Lifetime EP0283391B1 (de) 1987-03-17 1988-03-11 Verfahren zum Realisieren einer Betonstruktur, wie Brückendecken und Vorrichtung zur Anwendung

Country Status (6)

Country Link
EP (1) EP0283391B1 (de)
AT (1) ATE80195T1 (de)
DE (1) DE3874172T2 (de)
DK (1) DK170706B1 (de)
ES (1) ES2035327T3 (de)
FR (1) FR2612534B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008061501A1 (de) * 2006-11-23 2008-05-29 Peri Gmbh Stützenkopf für eine deckenschalung
US7472878B2 (en) 2003-11-03 2009-01-06 Peri Gmbh Lowering device comprising a support structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018203612A1 (de) 2018-03-09 2019-09-12 Peri Gmbh Absenkeinrichtung sowie Stützvorrichtung und Deckenschalung mit einer solchen Absenkeinrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1234759B (de) * 1962-12-10 1967-02-23 Polensky & Zoellner Verfahren zum Einschalen der einzelnen UEberbaufelder einer vielfeldrigen Bruecke
US3381929A (en) * 1963-07-24 1968-05-07 Elton Ind Inc Form assembly with adjustable retaining means for variable spacing
FR1387353A (fr) * 1963-12-28 1965-01-29 Sumitomo Metal Ind Coffrages ou moules d'acier pour béton
GB1102423A (en) * 1965-06-18 1968-02-07 Smiths Industries Ltd Improvements relating to props for supporting formwork for casting floors and the like
DE2253588A1 (de) * 1972-11-02 1974-05-16 Omega Geruestbau Gmbh Schalrahmen fuer betonschalungen
DE2361974C3 (de) * 1973-12-13 1979-05-03 Huennebeck Gmbh, 4030 Ratingen Schalungsstütze mit einer Absenkhilfe
DE2916452C2 (de) * 1979-04-24 1981-06-19 Benz, Rolf, Dipl.-Ing., 6100 Darmstadt Auflagerung für Längsträger in einer Kopfgabel
GB2107776B (en) * 1981-09-23 1985-08-07 Rapid Metal Developments Ltd Formwork support device for use in a construction system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7472878B2 (en) 2003-11-03 2009-01-06 Peri Gmbh Lowering device comprising a support structure
WO2008061501A1 (de) * 2006-11-23 2008-05-29 Peri Gmbh Stützenkopf für eine deckenschalung
US8262056B2 (en) 2006-11-23 2012-09-11 Peri Gmbh Prop head for ceiling formwork

Also Published As

Publication number Publication date
DE3874172T2 (de) 1993-03-18
ES2035327T3 (es) 1993-04-16
EP0283391B1 (de) 1992-09-02
FR2612534A1 (fr) 1988-09-23
FR2612534B1 (fr) 1989-07-07
DK130688A (da) 1988-09-18
EP0283391A3 (en) 1989-11-23
DK170706B1 (da) 1995-12-11
DE3874172D1 (de) 1992-10-08
DK130688D0 (da) 1988-03-10
ATE80195T1 (de) 1992-09-15

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