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EP0341507B1 - Coffrage - Google Patents

Coffrage Download PDF

Info

Publication number
EP0341507B1
EP0341507B1 EP89107678A EP89107678A EP0341507B1 EP 0341507 B1 EP0341507 B1 EP 0341507B1 EP 89107678 A EP89107678 A EP 89107678A EP 89107678 A EP89107678 A EP 89107678A EP 0341507 B1 EP0341507 B1 EP 0341507B1
Authority
EP
European Patent Office
Prior art keywords
formwork
walls
section
casing
foundation
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
EP89107678A
Other languages
German (de)
English (en)
Other versions
EP0341507A3 (en
EP0341507A2 (fr
Inventor
Willibald Fischer
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.)
PECA-VERBUNDTECHNIK GmbH
Original Assignee
PECA-VERBUNDTECHNIK GmbH
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 PECA-VERBUNDTECHNIK GmbH filed Critical PECA-VERBUNDTECHNIK GmbH
Priority to AT89107678T priority Critical patent/ATE88229T1/de
Publication of EP0341507A2 publication Critical patent/EP0341507A2/fr
Publication of EP0341507A3 publication Critical patent/EP0341507A3/de
Application granted granted Critical
Publication of EP0341507B1 publication Critical patent/EP0341507B1/fr
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
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • 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
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/06—Forming boards or similar elements the form surface being of metal
    • E04G9/065—Forming boards or similar elements the form surface being of metal the form surface being of wire mesh

Definitions

  • the invention relates to a formwork for foundation parts of the type explained in the preamble of claim 1.
  • Such formwork is known from US Pat. No. 3,730,475.
  • the known formwork consists of formwork walls made of solid plastic, which are connected to each other by a plurality of stiffening ribs running across the height of the formwork walls and across the opening.
  • the lower free edges of the formwork walls can support a reinforcement grid that remains in the concrete.
  • a recess must be formed in the ammunition grid, which is precisely matched to the thickness of the formwork walls within narrow tolerances.
  • stiffeners are arranged in the vertical direction and are formed as molded-in ribs, with a depression occurring on the inside of the formwork in the area of the ribs, these stiffeners must be relatively close to one another, with the filler opening for through the relatively wide spacers extending over the upper opening the concrete is at least partially covered. Subsequent arrangement of additional stiffening elements or spacers is possible only with great difficulty.
  • the known formwork can only be used as reusable formwork. It is not possible to adapt the known formwork to special conditions on the construction site.
  • a formwork which consists of a U-shaped strip from a latticework shrunk with plastic film and forms a channel with vertical side walls into which the concrete is poured from above.
  • the cross-section of the finished foundation is thus constant over the entire height of the foundation part, the width of the cross-section over the entire height of the foundation part corresponding to the width of the standing area necessary for the corresponding floor conditions.
  • the supports or the wall receiving surface of the foundation part must theoretically only be so large that supports or wall can lie snugly.
  • the invention is therefore based on the object to provide a formwork of the type mentioned, which can be designed as both lost and reusable formwork, which can be easily and inexpensively manufactured and installed on site, and which can be easily adapted to special needs can be adjusted on site.
  • the formwork can still be adapted to special needs on site.
  • the formwork can be designed both as lost formwork and as reusable formwork.
  • the use of the special stiffening elements and their arrangement along the opening as well as the use of at least one spacer ensures that even a flexible formwork wall with the claimed cross-section tapering upwards can withstand the concrete pressure. Since the spacers and the stiffening elements are attached to the latticework by piercing the plastic film, they can also be easily removed from the outside, if desired.
  • the formwork according to the invention is much easier and cheaper to manufacture than the known formwork with the same cross-sectional shape.
  • Claims 2 and 3 describe the application of the invention to a lost (claim 2) or removable and reusable (claim 3) formwork.
  • a lost formwork 1 for production of a strip foundation can be seen, which is designed as a channel with two lateral formwork walls 2 and 3 forming the long boundaries of the channel and a formwork floor 4.
  • the side formwork walls 2, 3 and the formwork floor 4 are integrally bent from a strip of composite material, which consists of a latticework 5 and a plastic film 6 shrunk onto the latticework 5 on both sides.
  • the latticework 5 is preferably one of the usual structural steel mats of suitable strength with crossed transverse or longitudinal bars 5a, 5b.
  • the plastic film 6 is one of the usual shrink films of suitable strength, as can also be used for packaging purposes, for example.
  • the plastic film 6 was placed in two webs, 6a, 6b on both sides of the still flat latticework 5 and shrunk under the action of heat, so that it closes tightly around the rods 5a and 5b due to the associated contraction and both layers 6a, 6b through the Openings of the latticework 5 are connected to each other. Then the latticework 5 with the shrunk plastic film 6 is bent to the desired profile.
  • the formwork was designed in such a way that the completely cast foundation part is provided in the lower region 7a in the form of a plate with an elongated rectangular cross section and in the upper region 7b above it with a trapezoidal cross section tapering upwards.
  • the floor width b 1 is determined according to static aspects depending on the formwork length l, while the reduced upper width b 2 is coordinated with the necessary footprint for the supports or walls.
  • stiffening elements 8 and 9 are arranged in the vicinity of the upper edges of the side formwork walls 2 and 3, which consist of three straight longitudinal rods 8a and 9a assembled in a triangle and curved longitudinal rods 8b, 9b exist, the curved longitudinal bars 8b, 9b each connecting two of the straight longitudinal bars 8a and 9a. In this case, only two curved longitudinal bars 8b and 9b can be provided per stiffening element 8 and 9, respectively.
  • the stiffening elements 8 and 9 are fastened to the side walls 2 and 3 with the aid of a spacer 10.
  • the spacers 10 penetrate the plastic film 6 and encompass both a transverse or longitudinal rod 5a or 5b of the lattice work and one of the longitudinal rods 8a or 9a of the stiffening elements 8 or 9 using suitable, known connecting means, in the simplest case, wire wire.
  • suitable, known connecting means in the simplest case, wire wire.
  • These spacers 10 ensure that both the width b2 of the upper opening of the formwork 1 and the distance between the formwork walls 2 and 3 remain essentially unchanged over the entire height of the formwork walls.
  • the narrow sides of the formwork 1 can be closed with suitable pieces of material. Both conventional formwork boards and a correspondingly cut and fastened piece of the material also used for the formwork 1 made of lattice work shrunk with plastic film are suitable for this purpose.
  • FIG. 3 shows a section similar to FIG. 2 through a further exemplary embodiment of the invention in the form of a reusable formwork 11.
  • the formwork 11 consists of at least two opposing formwork walls 12 and 13, each of which is made from a cut strip of the formwork already used for the formwork 1 used, shrunk with plastic film 6 latticework 5 exist.
  • the two side formwork walls 12 and 13 were then bent in steps and fixed in a mirror-image manner using the spacers 10 already described and at a predetermined distance in parallel position to one another and placed on a concrete base 14.
  • the greatest width b1 of the formwork 11, the width of the floor area, is in turn based on the static conditions, while the width b2 on the top of the formwork 11 is adapted to the required footprint for supports or walls.
  • the cross section of the foundation part produced with the formwork 11 thus has a plate-shaped lower region 15a with an elongated rectangular cross section, a central region 15b with a trapezoidally tapering cross section upwards and an upper region 15c, which in turn is plate-shaped but with a shorter rectangular cross section is.
  • stiffening elements 8 and 9 are again provided here, which have been omitted from the drawing for reasons of clarity.
  • the formwork 11, like the formwork 1, can also be closed on its narrow sides.
  • the fastenings of the spacers 10 with the formwork walls 12 or 13 are loosened (when using wire, this is pinched off), so that the formwork walls 12 and 13 and possibly also the formwork walls not shown, covering the narrow sides can be removed after the concrete has hardened.
  • the formwork can easily be can also be designed as formwork for individual foundations. Due to the flexibility of the latticework, the cross-sectional shapes of the achievable foundation parts are essentially freely selectable, so that they can be adapted to the structural conditions and the calculations without a noticeably increased amount of work, as would be the case with conventional formwork. If necessary, a latticework that is only shrunk on one side with plastic film can be used if the expected corrosive loads allow it.

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)
  • Glass Compositions (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Foundations (AREA)

Claims (3)

  1. Coffrage (1, 11) pour des éléments de fondations, comprenant des parois de coffrage (2, 3, 12, 13) formant une section transversale (7a, 7b, 15a, 15b, 15c) qui se rétrécit vers le haut et comporte une ouverture supérieure, au moins une entretoise (10) et un raidisseur (8, 9), caractérisé en ce que les parois de coffrage (2, 3, 12, 13) sont constituées d'une structure en treillis (5) susceptible d'être pliée et revêtue, par rétraction, d'une feuille de matière plastique (6), et en ce que le raidisseur comprend deux éléments de raidisseur disposés de part et d'autre de l'ouverture, constitués de barres longitudinales (8a, 9a) reliées entre-elles par des barres transversales (8b, 9b), et fixés à l'entretoise (10) s'étendant transversalement à l'intérieur du coffrage (1, 11) et transperçant la feuille de matière plastique (6).
  2. Coffrage selon la revendication 1, caractérisé en ce qu'au moins deux parois de coffrage (2, 3) opposées l'une à l'autre, sont reliées entreelles par un fond de coffrage (4) avec lequel elles sont formées d'un seul tenant.
  3. Coffrage selon la revendication 1, caractérisé en ce que les parois de coffrage (12, 13) sont constituées par au moins deux bandes opposées l'une à l'autre, de la structure en treillis (5) revêtue, par rétraction, d'une feuille de matière plastique (6), les deux bandes étant maintenues à une distance prédéterminée l'une de l'autre, par les entretoises (10).
EP89107678A 1988-05-09 1989-04-27 Coffrage Expired - Lifetime EP0341507B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107678T ATE88229T1 (de) 1988-05-09 1989-04-27 Schalung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815870A DE3815870C1 (fr) 1988-05-09 1988-05-09
DE3815870 1988-05-09

Publications (3)

Publication Number Publication Date
EP0341507A2 EP0341507A2 (fr) 1989-11-15
EP0341507A3 EP0341507A3 (en) 1990-05-30
EP0341507B1 true EP0341507B1 (fr) 1993-04-14

Family

ID=6354025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107678A Expired - Lifetime EP0341507B1 (fr) 1988-05-09 1989-04-27 Coffrage

Country Status (4)

Country Link
EP (1) EP0341507B1 (fr)
AT (1) ATE88229T1 (fr)
DE (2) DE3815870C1 (fr)
ES (1) ES2039741T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9111725U1 (de) * 1991-09-19 1993-01-28 Fischer, Willibald, 8312 Dingolfing Fugenschalungselement
DE9206140U1 (de) * 1992-05-07 1993-09-09 Peca-Verbundtechnik Gmbh, 84130 Dingolfing Schalung
GB9309948D0 (en) * 1993-05-14 1993-06-30 Macdonald Alex Improved kerb
GB0613534D0 (en) * 2006-07-07 2006-08-16 Bridge Iain N Improvements in or relating to barrier construction
DE202007005409U1 (de) 2007-04-13 2008-08-14 Obernolte, Sven Schalungselement
DE202007009044U1 (de) 2007-06-27 2008-11-06 Obernolte, Sven Schalungselement
DE202007005701U1 (de) 2007-04-19 2008-09-04 Obernolte, Sven Schalungselement
DE202007008977U1 (de) 2007-06-27 2008-10-30 Reent Obernolte Gmbh & Co. Kg Schalungselement
DE202007008976U1 (de) 2007-06-27 2008-10-30 Obernolte, Sven Schalungselement
DE202009003775U1 (de) 2008-03-18 2009-08-13 Obernolte, Sven Schalungselement
DE102013111056A1 (de) * 2013-10-07 2015-04-09 Peca - Verbundtechnik Gmbh Schalungselement
EP3312359B1 (fr) * 2016-10-19 2019-11-06 Beotek Oy Élément de moule
DE102018124773A1 (de) * 2018-10-08 2020-04-09 Protektorwerk Florenz Maisch Gmbh & Co. Kg Ständerprofil
GB2616437A (en) * 2022-03-08 2023-09-13 Abbey Pynford Holdings Ltd Shuttering system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730475A (en) * 1970-09-23 1973-05-01 L Werfel Form for casting concrete building foundation
NL8303866A (nl) * 1983-11-10 1985-06-03 Grad Heinz Carl Ing Verloren bekisting.

Also Published As

Publication number Publication date
ATE88229T1 (de) 1993-04-15
DE3815870C1 (fr) 1989-08-03
DE58904040D1 (de) 1993-05-19
EP0341507A3 (en) 1990-05-30
ES2039741T3 (es) 1993-10-01
EP0341507A2 (fr) 1989-11-15

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