EP0018187B1 - Section de tête pour une poutre de coffrage - Google Patents

Section de tête pour une poutre de coffrage Download PDF

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Publication number
EP0018187B1
EP0018187B1 EP19800301181 EP80301181A EP0018187B1 EP 0018187 B1 EP0018187 B1 EP 0018187B1 EP 19800301181 EP19800301181 EP 19800301181 EP 80301181 A EP80301181 A EP 80301181A EP 0018187 B1 EP0018187 B1 EP 0018187B1
Authority
EP
European Patent Office
Prior art keywords
head section
channel
plate
assembly according
abutment
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
EP19800301181
Other languages
German (de)
English (en)
Other versions
EP0018187A3 (en
EP0018187A2 (fr
Inventor
Anthony Edward Fowles
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.)
AL-FUTTAIM INDUSTRIES (PRIVATE) LIMITED
Original Assignee
Al-Futtaim Industries (Private) Ltd
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 Al-Futtaim Industries (Private) Ltd filed Critical Al-Futtaim Industries (Private) Ltd
Publication of EP0018187A2 publication Critical patent/EP0018187A2/fr
Publication of EP0018187A3 publication Critical patent/EP0018187A3/en
Application granted granted Critical
Publication of EP0018187B1 publication Critical patent/EP0018187B1/fr
Expired 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
    • 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
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • 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
    • E04G11/486—Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads
    • 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
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E04G11/54—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like

Definitions

  • This invention relates to beams and head sections for use in the casting of concrete and like structures such as floors and decks.
  • Formwork support arrangements to be used for such casting are well known in the art and generally comprises vertical props the tops of which are interconnected by beams for form a horizontal frame. This frame in turn supports moulds or panels on which the concrete or the like is cast.
  • Various arrangements have been proposed e.g. in U.K. Patent Specifications Nos. 1 386 966 and 1 457 136 and the details of the formwork not relevant to the present invention will accordingly not be described in this specification.
  • a longitudinal inverted channel-shaped head section suitable for mounting on a formwork beam to leave lateral mould- or panel-supporting ledges formed by the upper surface of the beam, the head section having internal rotatable adjustment members secured thereto at longitudinal intervals, the adjustment members serving in a first rotary position (but not in a second rotary position) to space the lower edges of the head section from the top of the beam so that the top of the head section may remain flush with the tops of the edges of the moulds or panels of differing thicknesses.
  • a beam for use with formwork for the casting of concrete or the like which comprises a metal section in the form of an inverted rectangular open-topped channel, the central web of the channel having a central longitudinal indentation forming a groove on the outside of the channel and a ridge along the bottom of the inside of the channel.
  • the preferred indentation shape is trapezoidal though arcuate and V-shaped indentations could, for example, be used.
  • the head section according to the invention will normally cover the groove.
  • Fig. 1 shows a scaffolding system consisting of standards 1, transoms 2 and ledgers 3 as described in our U.K Patent No. 1 385 878.
  • the standards 1 support the formwork proper through dropheads 4.
  • the dropheads 4 (see Fig. 5) comprise a plate 5 to be bolted to a similar plate on the top of a standard 1, a vertical threaded tube 6 welded thereto, a top plate 7 fixed to the top of the rod and a flanged bearing plate 8 carried by a heavy duty wing nut 9.
  • the beams are carried by the bearing plate 8 as described below, the top plate 7 serving to support the partially set concrete after the beams and the moulds or panels are removed.
  • the standards 1 have adjustable feet 10 for determining the verticai position of the formwork. Although the formwork is described as being horizontal it could of course be sloped to an extent depending on the material to be moulded etc.
  • the main beams 12 each comprise a rolled metal section 13 of inverted open-topped rectangular shape modified by a longitudinal trapezium-shaped indentation 14 which extends centrally along the central web of the section 13. This indentation has been found to permit the construction of a strong beam of relatively light and thin material.
  • the section 13 also has a channel-shaped lip 15 on each side.
  • Welded into each end of the section 13 is a channel-shaped bearing member 16 having cutouts forming a downwardly facing lug 17 on its central web 18.
  • the lug 17 has a further rectangular cut-out in the centre of its lower edge which engages a locating lug on the bearing plate 8. It is also desirable to weld corresponding locating lugs at intervals in the main beam channel-shaped lips 15.
  • the beams 12 have bracing elements 21 to strengthen them in a manner well known in the art.
  • the main beams 12 are carried at each end by the dropheads 4 and make up horizontal rectangular frames, the lugs 17 bearing on the bearing plates 8 behind the bearing plate flanges and optionally being laterally retained by the lugs referred to above.
  • a metal beam head section 25 Extending centrally along at least some of the main beams 12 is a metal beam head section 25 (see Fig. 4).
  • the beam head section 25 is narrower than the main beam but covers the indentation 14. Ledges formed by the upper surface of the beam 12 are therefore provided on each side of the head section 25.
  • the head section 25 is formed by an inverted rectangular open-topped channel section with inturned lips 26.
  • T-head bolts 27 in the indentation 14 in the beam 12 are used to secure the head section in position.
  • the plates 29 have end portions 30 which can be located between the lips 26 and the beam 12 to act as adjustment shims for altering the height of the top of the head section 25.
  • Infill beams 31 are placed as desired to span the rectangles or squares formed by the main beams 12.
  • the beams 31 are generally similar to the main beams 12 except that they may have no indentation 14 and may have inturned lips 15.
  • the lugs 17 of the infill beams 31 rest in the channel-shaped lips 15 of the main beams 12.
  • head sections 25 may be placed in main beams 12 carried by other main beams 12, with suitable bridge sections 32 being provided.
  • the panels or moulds Resting on the main beams 12 and infill beams 31 (if present) are the panels or moulds. These may for example be plywood decking or glass reinforced plastic waffle and trough moulds (usually 19 mm thick) or polypropylene moulds (usually with a flange depth of 25 mm).
  • the head section adjuster end portions 30 are therefore conveniently 6 mm thick.
  • the distance between the bearing plate 8 and the support plate 7 will also have to be changed when the head section adjusters 29 are rotated from one operative position to another.
  • the plate 8 has a pair of grooved projections one of which is shown at 41. If the plate 8 is rotated through 90° (after screwing down the nut 9) these projections will be under the hollow rectangular abutment block 42 and plate 7 will be lowered. By making these projections 6 mm high the correct adjustment can be ensured.
  • main beams 12 need not have a head section.
  • main beams 12, with or without a head section can be used as infill beams (as shown at 40 in Fig. 1.).
  • the drophead of Fig. 5 is modified in that there is no plate 5 and stem 6 is elongated with a non-threaded portion (say 250 mm) long at its lower end.
  • a further wing nut similar to wing nut 9, is mounted on the stem threads.
  • This arrangement permits the lower end of stem 6 to be slid into the upper end of a standard hollow vertical scaffolding pole, the vertical position of the drophead being determined by the position of the second wing nut.
  • the unthreaded portion of the stem 6 serves to ensure a minimum overlap with the scaffolding pole (consistent with safety) and also holds the wing nut captive.

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)

Claims (9)

1. Profilé faîtier longitudinal (25) en forme de gouttière renversée convenant pour montage sur une poutre de coffrage (12) afin de ménager des corniches latérales de support de moule ou de panneau formées par la surface supérieure de la poutre, ce profilé faîtier comportant des éléments de réglage tournants internes (28, 29, 30) qui lui sont fixés à intervalles longitudinaux, les éléments de réglage servant dans une première position angulaire (mais non dans une seconde position angulaire) à espacer les bords inférieurs du profilé faîtier du dessus de la poutre (12) de façon que le dessus du profilé faltier (25) puisse être au ras des dessus des bords de moules ou de panneaux d'épaisseurs différentes.
2. Profilé faîtier selon la revendication 1, caractérisé en ce que les éléments de réglage sont des plaques sensiblement rectangulaires (29) susceptibles de tourner autour d'axes verticaux (28) pendant à partir de la surface intérieure du dessus du profilé faitier (25).
3. Profilé faîtier selon la revendication 1 ou 2 comportant un profilé métallique rectangulaire à rebords tournés en dedans (26).
4. Assemblage comportant un profilé faîtier selon la revendication 1, 2 ou 3 et une poutre de coffrage (12), la poutre de coffrage comportant un profilé métallique en forme de gouttière rectangulaire ouverte au sommet renversée, l'âme médiane de la gouttière présentant un rentrant longitudinal médian (14) formant une rainure sur l'extérieur de la gouttière et une nervure le long de la base de l'intérieur de la gouttière.
5. Assemblage selon la revendication 4, caractérisé en ce que la poutre a des boulons (27) s'étendant à travers le rentrant, les boulons ayant des têtes en T destinées à porter contre des rebords intérieurs du profilé faîtier.
6. Assemblage selon la revendication 4 ou 5, caractérisé en ce que le rentrant (14) est en forme de trapèze.
7. Assemblage selon la revendication 4, 5 ou 6, caractérisé en ce que la poutre (12) a un rebord en forme de goutière (15) le long de chaque côté.
8. Assemblage selon l'une quelconque des revendications 4 à 7, comportant des bonshommes d'arrêt (4) portant les extrémités respectives des poutres, chaque bonhomme d'arrêt comportant une plaque d'appui à rebords dirigés vers le haut (8) destinée à recevoir des oreilles regardant vers le bas (17) formées sur les extrémités de poutre, la plaque d'appui étant supportée par un élément taraudé (9) sur une tige filetée (6) qui traverse un trou central de la plaque et est maintenue par l'élément fileté (9) contre le dessous d'un butée (4.2) prévue à l'extrémité supérieure de la tige, l'espacement entre la plaque (8) et la butée (42) étant réglable.
9. Assemblage selon la revendication 8, caractérisé en ce que la plaque (8) a des saillies dirigées vers le haut (41) qui butent contre la butée (42) dans une première position angulaire de la plaque et sont dégagées de la butée (42) dans une seconde position angulaire de la plaque.
EP19800301181 1979-04-12 1980-04-11 Section de tête pour une poutre de coffrage Expired EP0018187B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7912941 1979-04-12
GB7912941 1979-04-12

Publications (3)

Publication Number Publication Date
EP0018187A2 EP0018187A2 (fr) 1980-10-29
EP0018187A3 EP0018187A3 (en) 1981-01-07
EP0018187B1 true EP0018187B1 (fr) 1983-09-21

Family

ID=10504539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800301181 Expired EP0018187B1 (fr) 1979-04-12 1980-04-11 Section de tête pour une poutre de coffrage

Country Status (10)

Country Link
EP (1) EP0018187B1 (fr)
JP (1) JPS55142870A (fr)
AU (1) AU5743680A (fr)
DE (1) DE3064883D1 (fr)
GB (1) GB2047786B (fr)
HK (1) HK89587A (fr)
IE (1) IE49443B1 (fr)
IN (1) IN153642B (fr)
NZ (1) NZ193451A (fr)
SG (1) SG37086G (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912364U (ja) * 1982-07-14 1984-01-25 井上鉄工株式会社 コンクリ−ト仮枠の支持梁
JP2532971Y2 (ja) * 1991-06-13 1997-04-16 ワイケイケイアーキテクチュラルプロダクツ株式会社 外装パネル体の取付構造
FR2683575B1 (fr) * 1991-11-07 1994-01-21 Soframat Panneau de coffrage de dalle.
KR100887366B1 (ko) * 2007-02-08 2009-03-06 주식회사 협동 지붕슬래브 형성을 위한 거푸집 받침 장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1457136A (en) * 1973-09-21 1976-12-01 Mills Scaffold Co Ltd Builders formwork
GB2005332B (en) * 1977-09-21 1982-03-24 Rapid Metal Developments Ltd Formword support system

Also Published As

Publication number Publication date
EP0018187A3 (en) 1981-01-07
SG37086G (en) 1987-07-03
IN153642B (fr) 1984-08-04
AU5743680A (en) 1980-10-16
IE49443B1 (en) 1985-10-02
JPS55142870A (en) 1980-11-07
EP0018187A2 (fr) 1980-10-29
GB2047786B (en) 1983-04-20
NZ193451A (en) 1983-02-15
HK89587A (en) 1987-12-11
IE800744L (en) 1980-10-12
GB2047786A (en) 1980-12-03
DE3064883D1 (en) 1983-10-27

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