EP0866196B1 - Coffrage - Google Patents

Coffrage Download PDF

Info

Publication number
EP0866196B1
EP0866196B1 EP98302006A EP98302006A EP0866196B1 EP 0866196 B1 EP0866196 B1 EP 0866196B1 EP 98302006 A EP98302006 A EP 98302006A EP 98302006 A EP98302006 A EP 98302006A EP 0866196 B1 EP0866196 B1 EP 0866196B1
Authority
EP
European Patent Office
Prior art keywords
shutter
shutters
structural element
folded
section
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 - Lifetime
Application number
EP98302006A
Other languages
German (de)
English (en)
Other versions
EP0866196A1 (fr
Inventor
William Winter
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.)
WINTER, WILLIAM
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0866196A1 publication Critical patent/EP0866196A1/fr
Application granted granted Critical
Publication of EP0866196B1 publication Critical patent/EP0866196B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E04G9/08—Forming boards or similar elements, which are collapsible, foldable, or able to be rolled up
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/02—Flat foundations without substantial excavation
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills

Definitions

  • the invention concerns shutters for use in the building industry, with particular, but by no means exclusive, reference to groundbeam shutters.
  • the invention further concerns structural elements and a method for making such a structural element.
  • Shutters of the kind described in the preamble of claim 1 are known from GB-A-2235235 which discloses a one piece shutter having a water destructible paper honeycomb adhered to two sheets of cardboard or fibreboard.
  • the shutter is sacrificial in the sense that the shutter remains in the ground after a foundation beam is cast, the intention is that at least the honeycomb is subsequently destroyed by the action of water, in order to leave a void around the foundation beam.
  • groundbeams comprise steel or wooden structures which are positioned in a trench.
  • a steel reinforcement cage can be positioned and the form shutter filled with concrete.
  • the steel or wooden shuttering is recovered for future use.
  • Non-traditional systems include the "beam form” system (manufactured by RMD, UK), in which two panels of expanded polystyrene are used, which must be positioned relative to one another in the trench. The panels are single sized.
  • An example of a one piece groundbeam system is "PECAFILL” (distributed in the UK by BRC), which comprises a polyethylene coated steel mesh. PECAFILL is bent into the required shape at the manufacturing plant and remains bent until used.
  • the present invention provides a simple, low cost, flexible sacrificial shutter which is easily erected on site, thereby circumventing the need for employing skilled craftsmen on site.
  • "Sacrificial" in the present context means that the shutter is permanent, i.e. that is it not removed once the concrete has set.
  • a one piece sacrificial shutter according to claim 1.
  • the material may be plastic.
  • the plastic may be polypropylene or a modified polypropylene.
  • the shutter may be in a structural element, which may be a groundbeam.
  • the shutter may be folded along crease lines.
  • the shutter may be folded on site.
  • a method for making a structural element using at least one sacrificial shutter according to the first aspect of the invention is provided.
  • the method when according to claim 11, comprises the steps of:
  • Figure 1 shows a one piece sacrificial shutter 10 of the present invention comprising a folded section of fluted material.
  • a preferred material is plastic, and a preferred plastic is polypropylene, since in its fluted form it exhibits the necessary mechanical properties and is extremely cost effective to manufacture.
  • a further advantage is that polypropylene is resistant to attack from a wide range of chemicals and minerals, making shutters manufactured in polypropylene suitable for use in contaminated ground. Modified polypropylenes, which have even better chemical resistance, can be used. It is possible to coat the shutters in order to provide enhanced properties, although this increases the cost of manufacture. It will be appreciated that other plastics are within the scope of the invention as defined in the appended claims.
  • the shutter 10 of Figure I is for a groundbeam. However, it is possible to use shutters of the present invention to produce other structural features, such as pile caps.
  • the shutter 10 is located in a blinded, backfilled trench 12, and a reinforcement cage 14 is disposed within the shutter 10. Subsequently, concrete is poured into the shutter 10, which, once the concrete has set, remains in place.
  • Other forms of shuttering are also with the scope of the invention as defined in the appended claims.
  • Figure 2 is a cross-sectional view of a polypropylene section 16 having flutes 17, the flutes 17 in this example being apertures, i.e. bores extending transversely across the length of the section 16.
  • the flutes can, however, comprise grooves formed in the surface of the section.
  • the section can be corrugated.
  • Extruded polypropylene is a highly suitable material. The precise dimensions and densities used can, of course, be varied so as to provide shutters suitable for the task envisaged. However, it has been found that sections having thickness/weight characteristics (t/w) in the range 4.0/700 to 6.0/1500 are well suited to a wide range of applications. The thickness is the dimension 't' shown in Figure 2, in millimetres, and the weight 'w' is the weight in grams per square metre.
  • the extruded section may be creased, or fold lines may be formed by any suitable means, even on site.
  • Such means might comprise a platen equipped with suitably positioned and adapted blades.
  • the flat packed sections may be used in the following manner.
  • a trench is dug and blinded.
  • the flat sections 18 are disposed in the trench 20.
  • the flat sections have fold lines 22, 24.
  • the joints are secured with an appropriate shuttering tape, or by way of "H" shaped mating pieces 40, shown in Figure 4 (a).
  • shutters might simply overlap one another.
  • the flat sections are slid into slots 42, 44 of the mating piece 40.
  • One or more mating pieces can be used per joint.
  • Spacers which might be bars or any other suitable arrangement, are placed in the middle portion 18a of the section (which forms the base portion of the shutter) and reinforcement cage lowered to said middle portion 18a.
  • the sides 18b, 18c of the sections 18 are folded along the fold lines to produce upright walls, whilst ensuring that side spacers are fitted to the reinforcement cage.
  • the spoil is then backfilled against the upright walls, thus securing said walls against the side spacers.
  • Concrete is then poured into the shutter. It will be apparent that it is also possible to fold the sections 18 before placing same in the trench 20.
  • spacers can be positioned in the folded shutters which are of similar width as the folded shutter and thus maintain the shape of the folded shutter against the pressure of the backfill.
  • the spacers which might be made from timber, are removed as the concrete is poured in.
  • the present invention offers numerous advantages.
  • the shutter is quickly and easily assembled, this providing saving on erection times and dispensing with the necessity of providing a skilled person such as a joiner on site.
  • the sections may be conveniently flat-packed before use and delivered on pallets.
  • the shutter is sacrificial, and this provides protection for the eventually produced concrete structure from, for example, any contaminants present in the ground.
  • Use of the shutter is extremely convenient and flexible, since the nature of the plastic material employed makes alteration of the design envisaged a simple task.
  • the shutter is lightweight. Additionally, anti clay heave products can be added immediately, since there is no waiting for shutter strip.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Saccharide Compounds (AREA)
  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Recrystallisation Techniques (AREA)
  • Lock And Its Accessories (AREA)
  • Color Television Image Signal Generators (AREA)
  • Holo Graphy (AREA)
  • Electronic Switches (AREA)
  • Glass Compositions (AREA)

Claims (16)

  1. Coffrage consommable en une seule pièce (10) destiné à être utilisé dans l'industrie du bâtiment pour la construction d'éléments de structure, constitué d'un profilé en U plié à trois côtés (16) d'un matériau cannelé, le profilé en U ayant un axe longitudinal, dans lequel les cannelures délimitent des trous (17) qui s'étendent transversalement a l'axe longitudinal, caractérisé en ce que, à l'état déplié du profilé, les trous ont des extrémités ouvertes et s'étendent parallèlement au plan du profilé déplié.
  2. Coffrage selon la revendication 1, dans lequel le matériau est une matière plastique.
  3. Coffrage selon la revendication 2, dans lequel la matière plastique est le polypropylène ou un polypropylène modifié.
  4. Coffrage selon l'une quelconque des revendications 1 à 3, plié le long de lignes de marquage (22, 24).
  5. Coffrage selon l'une quelconque des revendications 1 à 4 comprenant uniquement une partie médiane (18a) et deux côtés (18b, 18c), les côtés formant les parois latérales du coffrage.
  6. Coffrage selon l'une quelconque des revendications 1 à 5, dans lequel le profilé est extrudé.
  7. Elément de structure comprenant un matériau durci de construction et au moins un coffrage selon l'une quelconque des revendications 1 à 6.
  8. Elément de structure selon la revendication 7, dans lequel le matériau durci de construction est du béton durci.
  9. Elément de structure selon la revendication 7 ou 8, qui constitue une dalle.
  10. Procédé de fabrication d'un élément de structure à l'aide d'au moins un coffrage consommable selon l'une quelconque des revendications 1 à 6.
  11. Procédé selon la revendication 10, comprenant les étapes suivantes :
    le positionnement du coffrage ou des coffrages dans une tranchée (12),
    le pliage du coffrage ou des coffrages à la configuration voulue,
    le remblayage de la tranchée pour le support du coffrage ou des coffrages, et
    la coulée, dans le coffrage ou les coffrages pliés, sous forme liquéfiée, d'un matériau de construction qui peut durcir, puis le durcissement de celui-ci.
  12. Procédé selon la revendication 10 ou 11, dans lequel le coffrage ou les coffrages sont pliés sur place.
  13. Procédé selon la revendication 12, dans lequel des lignes de marquage sont formées sur place dans le coffrage ou les coffrages.
  14. Procédé selon l'une quelconque des revendications 10 à 13, dans lequel le matériau de construction qui peut durcir est un béton.
  15. Procédé selon l'une quelconque des revendications 10 à 14, dans lequel l'élément de structure est une dalle.
  16. Procédé selon l'une quelconque des revendications 11 à 15, dans lequel une cage d'armature (14) est positionnée dans le coffrage ou les coffrages avant la coulée du matériau de construction qui peut durcir.
EP98302006A 1997-03-18 1998-03-17 Coffrage Expired - Lifetime EP0866196B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9705506 1997-03-18
GBGB9705506.5A GB9705506D0 (en) 1997-03-18 1997-03-18 Shutters

Publications (2)

Publication Number Publication Date
EP0866196A1 EP0866196A1 (fr) 1998-09-23
EP0866196B1 true EP0866196B1 (fr) 2003-01-29

Family

ID=10809375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98302006A Expired - Lifetime EP0866196B1 (fr) 1997-03-18 1998-03-17 Coffrage

Country Status (7)

Country Link
EP (1) EP0866196B1 (fr)
AT (1) ATE231942T1 (fr)
DE (1) DE69810974T2 (fr)
DK (1) DK0866196T3 (fr)
ES (1) ES2191906T3 (fr)
GB (1) GB9705506D0 (fr)
PT (1) PT866196E (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK174529B1 (da) 2000-12-21 2003-05-12 Mdt V Morten Dahl Konstruktionselement og fremgangsmåde til fremstilling af nævnte element
GB0120404D0 (en) 2001-08-22 2001-10-17 Winter William Shutters
GB0305663D0 (en) * 2003-03-12 2003-04-16 Ultraframe Uk Ltd Base for a building structure
GB0325813D0 (en) 2003-11-05 2003-12-10 Winter William Sacrificial shutter
GB2464935A (en) 2008-10-29 2010-05-05 William Winter Prefabricated plastic shuttering complete with steel reinforcement
NL1037887C2 (nl) * 2010-04-13 2011-10-17 Aqua Life Nederland B V Fundatie-element voor het funderen van een bouwwerk, zoals een woning, werkwijze voor het vormen van een fundatie-element, en werkwijze voor het funderen van een bouwwerk.
NL2014368B1 (nl) * 2015-02-27 2016-10-14 De Hoop Pekso Productie B V Werkwijze voor het verschaffen van een fundering onder gebruikmaking van een meerdelige funderingsbekisting.
GB201508030D0 (en) * 2015-05-11 2015-06-24 Fosroc International Ltd Formwork
CN108532985B (zh) * 2018-06-07 2020-07-28 中建五局土木工程有限公司 基础梁板施工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539169A1 (fr) * 1983-01-12 1984-07-13 Delmas Georges Coffrage enveloppe pour ouvrages en beton

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581678B1 (fr) * 1985-05-07 1988-12-02 Brami Max Procede pour la realisation d'une structure en beton arme noyee dans le sol
GB2235235A (en) * 1989-08-17 1991-02-27 Dufaylite Dev Ltd Forming structures in ground
DE9014214U1 (de) * 1990-10-12 1991-01-10 Construmat Ag, Hegnau-Volketswil Schalungselement für Betonstützen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539169A1 (fr) * 1983-01-12 1984-07-13 Delmas Georges Coffrage enveloppe pour ouvrages en beton

Also Published As

Publication number Publication date
DE69810974T2 (de) 2003-11-27
ATE231942T1 (de) 2003-02-15
PT866196E (pt) 2003-06-30
ES2191906T3 (es) 2003-09-16
DE69810974D1 (de) 2003-03-06
GB9705506D0 (en) 1997-05-07
DK0866196T3 (da) 2003-05-26
EP0866196A1 (fr) 1998-09-23

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