EP0434603B1 - Dispositif pour la fixation de la distance entre deux parois de coffrage opposées - Google Patents

Dispositif pour la fixation de la distance entre deux parois de coffrage opposées Download PDF

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Publication number
EP0434603B1
EP0434603B1 EP19900810836 EP90810836A EP0434603B1 EP 0434603 B1 EP0434603 B1 EP 0434603B1 EP 19900810836 EP19900810836 EP 19900810836 EP 90810836 A EP90810836 A EP 90810836A EP 0434603 B1 EP0434603 B1 EP 0434603B1
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EP
European Patent Office
Prior art keywords
retainer element
angle iron
accordance
recesses
rod
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
EP19900810836
Other languages
German (de)
English (en)
Other versions
EP0434603A1 (fr
Inventor
Werner Wälchli
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.)
TRATAN AG
Original Assignee
TRATAN AG
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
Priority claimed from CH453489A external-priority patent/CH675274A5/de
Application filed by TRATAN AG filed Critical TRATAN AG
Priority to AT90810836T priority Critical patent/ATE89634T1/de
Publication of EP0434603A1 publication Critical patent/EP0434603A1/fr
Application granted granted Critical
Publication of EP0434603B1 publication Critical patent/EP0434603B1/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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/064—Spacers placed on the bottom of the mould

Definitions

  • the present invention relates to a device for fixing the position of two formwork walls facing each other at a distance, consisting of a rod-shaped holding element which is intended to be anchored in a foundation in a vertical position approximately along the center line of a wall to be erected and a crossbar, the length of which corresponds to the distance which corresponds to formwork walls facing one another.
  • the rod-shaped mounting element consists of a U-shaped profile section. A through hole is drilled in each of the two parallel legs of the profile section, the two holes being aligned with one another. A freely displaceable crossbar is pushed through the two holes.
  • the cross bar is fixed by means of a fixing pin which is struck between the cross bar and the U-shaped profile bar. This is the profile bar is provided with a notch running in the longitudinal direction.
  • the known device has proven itself in terms of functionality. However, there is a risk that the corresponding locating pins will be lost or missing at all.
  • the rod-shaped mounting element consists of a tube section or a full round rod.
  • a slot is sawn or milled into this mounting element about 2-4 cm below the upper end to about three quarters of its outside diameter. This slot is used to hold and fix the crossbar.
  • This device has also proven its functionality. However, making the slot in the tube or round bar proves to be a very expensive operation. In addition, a tool must be available for fixing the crossbar, with which the upper end of the mounting element can be bent to fix the crossbar.
  • a further variant is shown in CH-A-664'186, in which a fixing device is described according to the method.
  • This also consists of a rod-shaped fixing element in the Form of a U-profile, which is provided at its upper leg ends with two recesses, in which a crossbar with grooves can be inserted in a form-fitting manner.
  • a tab protruding from the ends of the legs formed from the base of the profile can be bent over an inserted cross bar.
  • This solution is also rather expensive because of the special crossbar. It is also doubtful that the bracket withstands the forces that occur when the formwork walls are set.
  • DE-A-38 11 809 shows a device that comes close to the device already cited according to EP-A-0 084 017, here an L-profile is used instead of a U-profile, the legs of which have recesses that are aligned with one another a cross bar is slidably held and which in turn is held and secured with a round wedge as a fixing pin.
  • the present invention has for its object to provide a device according to the preamble of claim 1, which is installed without additional components, such as fixing pins and without special tools, and can be manufactured at a lower price.
  • the device according to the invention which is designated as a whole by 1 is hammered into the not yet hardened concrete.
  • the two formwork walls 12 and 13 are erected on both sides of the device 1 and pulled together by means of tensioner 10.
  • the fresh concrete is then poured in between the formwork walls.
  • the spacing devices according to the invention are completely covered by the concrete and are lost.
  • the device 1 consists of two basic elements, the bracket element 2 and the angle iron 3 as a crossbar.
  • the mounting element 2 is made in the illustrated embodiment from an angle iron. At the lower end, the legs are cut off at an angle. The tip 4 thus formed facilitates the pushing of the device into the fresh concrete.
  • the angle iron chosen for the mounting element preferably has a flank length of 20-30 mm.
  • triangular recesses 5 are punched into both legs 8, so that the holding element 2 can bend slightly at this point. These recesses 5 are made in alignment in the legs 8, so that the angle iron 3 can be pushed in.
  • the crossbar is made of an angle iron 3 or a structured reinforcing iron and is provided with a plastic cap (15) at its ends.
  • the web present on the mounting element 2 between the long sides of the two triangular cutouts 5 is pre-bent in production so that the mounting element 2 is deformed at the construction site at the right place, at the cutouts 5, and the force required for this deformation is no longer too great.
  • a further possibility for reducing the force for the deformation of the upper region 6 results from the fact that the web 9 resulting on the long side of the triangular recess 5 is interrupted by approximately 5 mm. The remaining stubs hold the angle iron 3 and the upper region 6 of the mounting element 2 can be bent with little force. In addition, the step of pre-bending the web 9 is omitted.
  • a hole 7 extending over the apex is punched. This hole is used on the construction site for a round bar 11 to insert and by its leverage with relatively little force to bend the upper portion 3 of the support member.
  • the dimensioning of the hole is designed in such a way that the tip of a construction hammer or a chisel also fits into it.
  • the device is inserted approximately in the middle of the wall to be created in the fresh concrete.
  • the angle iron 3 is now moved so that one end is aligned with the outer formwork wall 12.
  • a round bar 11 as indicated in FIG. 3a, the upper area 6 of the holding element 2 is bent.
  • the recesses 5 deform at this kink in such a way that the crossbar, which consists of angle iron, is deformed and is immovably connected to the mounting element.
  • auxiliary mounting element 21 is used in order to avoid bending the angle iron 3 in rough operation, as it is a construction site. If such an auxiliary mounting element 21 is used, the mounting element 2 is not hit in the middle, but near one of the formwork walls 12 or 13 in the not yet hardened concrete of the floor slab. The longer part of the angle iron is then supported with the auxiliary bracket element. The auxiliary bracket element 21 is also hammered into the concrete, but in contrast to the bracket element 2 is not jammed with the angle iron 3.
  • the auxiliary mounting element 21 is provided at one end with a prepared opening through which the angle iron 3 is guided.
  • the auxiliary bracket member 21 is used only to stabilize and support the crossbar. If a profile made of solid material is used as the angle iron 3, this advantageously has a structured surface which increases the grip of the connection with the mounting element 2. It would be conceivable that the angle iron 3 is made of a structured reinforcing steel.
  • the device 1 according to the invention is not only extremely inexpensive in terms of material expenditure and production, but also forms a unit for delivery. No separate loose parts are required to lock the angle iron 3 in its desired position. For the application of the device 1, only a round bar 11 is required as a lever, which is always present in the form of remnants of the reinforcing steels on a construction site.
  • the triangular recess 5 can also, as shown in FIG. 4, be removed with the base line of the triangle from the apex 14 of the mounting element 2 and punched into the two legs 8. The kinking then takes place on the side facing away from the apex 14 of the holding element and there are two webs 9 'which are formed on the flanks 16. This does not change the function of the device.
  • the hole 7 made above the recess 5 in the apex region allows deformation by bending by means of a lever. If the crossbar is not completely in the right place when it is first clamped, the cutout 5 can be easily widened again. Clamping by means of bending also guarantees that the support element does not come loose again in not fully hardened concrete. This risk existed for all elements in which the connection between the mounting element and the crossbar was ensured by impact, for example with a hammer.

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  • 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. Dispositif de fixation de la position de deux parois de coffrage (12,13) disposées en regard à distance l'une de l'autre, le dispositif étant constitué d'au moins un élément de retenue en forme de barre (2) qui se présente sous la forme d'un fer à angle avec deux ailes (8) comportant chacune, à l'extrémité supérieure, un évidement (5), l'élément de retenue (2) étant défini en sorte que, à peu près le long de la ligne centrale d'un mur à dresser, il soit ancré en position verticale dans des fondations, le dispositif comprenant par ailleurs une barre transversale (3) dont la longueur détermine la distance des parois de coffrage (12,13) en regard l'une de l'autre, de telle sorte que l'élément de retenue et la barre transversale forment une croix à angle droit, caractérisé en ce que les évidements (5) sont triangulaires et en ce qu'un fer à angle (3) y peut être enfiché sous la forme d'une barre transversale de telle sorte que le fer à angle (3) puisse se déplacer longitudinalement dans les évidements (5) et puisse être, par flexion de la zone supérieure (6) de l'élément de retenue (2), fixé dans les évidements (5) de celui-ci par calage, afin que le fer à angle (3) soit relié de manière définitive à l'élément de retenue (2) après flexion de celui-ci.
  2. Dispositif selon la revendication 1, caractérisé en ce que la barre transversale est un fer à angle (3) qui s'ajuste dans les évidements triangulaires (5) de l'élément de retenue (2) et y est maintenu de manière à pouvoir coulisser avant la flexion.
  3. Dispositif selon la revendication 1, caractérisé en ce que les lignes de base des évidements triangulaires (5) se situent dans les ailes (8) de l'élément de retenue (2) sur les côtés du sommet (14) de celui-ci.
  4. Dispositif selon la revendication 1, caractérisé en ce que chaque arète latérale de l'évidement triangulaire (5) de l'élément de retenue (2) s'étend paralèllement aux arètes (16) en regard du sommet (14) de l'aile correspondante (8).
  5. Dispositif selon la revendication 1, caractérisé en ce que l'on perce dans l'élément de retenue (2), au-dessus des évidements (5), un orifice (7) qui permet, à l'aide d'un fer rond (11) enfiché à travers comme bras de levier, de soumettre à flexion la zone supérieure (6).
  6. Dispositif selon la revendication 1, caractérisé en ce que le fer à angle (3) est pourvu de chapeaux de matière plastique terminaux (15).
  7. Dispositif selon la revendication 1, caractérisé en ce que les ailes (8) de l'élément de retenue (2) sont biseautés vers le bas et forment une pointe (4) au sommet du fer à angle.
  8. Dispositif selon la revendication 1, caractérisé en ce que le fer à angle (3) présente une surface structurée.
  9. Dispositif selon la revendication 1, caractérisé en ce que, à partir d'une largeur d'écartement de 35 cm, au moins un autre élément de retenue auxiliaire en forme de barre simplifié est fixé à la barre transversale, cet élément maintenant celle-ci en position horizontale à une hauteur définie.
EP19900810836 1989-12-18 1990-10-31 Dispositif pour la fixation de la distance entre deux parois de coffrage opposées Expired - Lifetime EP0434603B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90810836T ATE89634T1 (de) 1989-12-18 1990-10-31 Vorrichtung zur fixierung der lage von zwei zueinander in abstand gegenueberstehenden schalungswaenden.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH453489A CH675274A5 (en) 1989-12-18 1989-12-18 Positioned for two oppositely spaced shuttering walls - has vertical angle iron holder bar with triangular end recess for cross-bar
CH4534/89 1989-12-18
CH1848/90 1990-05-31
CH184890 1990-05-31

Publications (2)

Publication Number Publication Date
EP0434603A1 EP0434603A1 (fr) 1991-06-26
EP0434603B1 true EP0434603B1 (fr) 1993-05-19

Family

ID=25688840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900810836 Expired - Lifetime EP0434603B1 (fr) 1989-12-18 1990-10-31 Dispositif pour la fixation de la distance entre deux parois de coffrage opposées

Country Status (2)

Country Link
EP (1) EP0434603B1 (fr)
DE (1) DE59001497D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109667424A (zh) * 2018-12-31 2019-04-23 宁波二十冶建设有限公司 一种铝合金模板拉杆固定装置及施工方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664186A5 (en) * 1984-07-09 1988-02-15 Maegert Bautechnik Ag Securing method for cross-bar to girder - with lugs hammered down to hold in semi-circular recesses in flanges
DE3811809A1 (de) * 1988-04-08 1989-10-19 Huebner Handel Huewa Ansetzsystem, insbesondere fuer schalverfahren des vertikalen betonbau's
DE3823401C1 (en) * 1988-07-09 1989-07-20 Tratan Ag, Oberdiessbach, Ch Device for fixing the position of two shuttering walls which are spaced apart opposite one another

Also Published As

Publication number Publication date
EP0434603A1 (fr) 1991-06-26
DE59001497D1 (de) 1993-06-24

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