EP3719237A1 - Support de coffrage, dispositif de support de coffrage et coffrage de plafond - Google Patents

Support de coffrage, dispositif de support de coffrage et coffrage de plafond Download PDF

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Publication number
EP3719237A1
EP3719237A1 EP19167089.2A EP19167089A EP3719237A1 EP 3719237 A1 EP3719237 A1 EP 3719237A1 EP 19167089 A EP19167089 A EP 19167089A EP 3719237 A1 EP3719237 A1 EP 3719237A1
Authority
EP
European Patent Office
Prior art keywords
formwork
support
formwork support
connecting strap
strap
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
EP19167089.2A
Other languages
German (de)
English (en)
Other versions
EP3719237B1 (fr
Inventor
Thomas Streißelberger
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.)
Doka GmbH
Original Assignee
Doka 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 Doka GmbH filed Critical Doka GmbH
Priority to EP19167089.2A priority Critical patent/EP3719237B1/fr
Priority to ES19167089T priority patent/ES2934811T3/es
Publication of EP3719237A1 publication Critical patent/EP3719237A1/fr
Application granted granted Critical
Publication of EP3719237B1 publication Critical patent/EP3719237B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04G11/483—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
    • 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
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E04G11/52—Girders, beams, or the like as supporting members for forms of several units arranged one after another
    • 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
    • E04G25/04—Shores or struts; Chocks telescopic
    • 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
    • E04G2025/003—Supports therefor, e.g. tripods

Definitions

  • ceiling formwork with longitudinal and transverse girders for supporting formwork panels are known (cf. WO 2016/116543 ).
  • the side members are mounted on the holding heads of formwork props.
  • the cross members are placed on the side members, essentially across them.
  • formwork panels are placed on the cross members.
  • the side members have a predetermined length.
  • several longitudinal beams are arranged one behind the other per row.
  • the successive longitudinal beams are offset somewhat laterally, so that the ends of the longitudinal beams can be arranged to overlap.
  • the side members are usually supported in the overlapping area with a formwork prop.
  • the longitudinal beams remain displaceable relative to one another in the longitudinal direction, which can result in instability of the ceiling formwork without additional measures, such as support legs.
  • slab formworks are also known in which the ends of the side members are attached directly to the formwork supports in the heads. From a static point of view, however, there are no significant improvements.
  • the object of the present invention is to alleviate at least individual disadvantages of the prior art or to eliminate.
  • the aim of the invention is, in particular, to create a formwork support with which the stability of a ceiling formwork can be increased and the use of formwork props and the necessary support legs can be reduced.
  • a first connecting strap with a first coupling part for releasable longitudinal connection with a second coupling part of a further formwork support is mounted at the first end of the formwork support.
  • two formwork beams according to the invention are coupled to one another via the corresponding coupling parts on the facing end faces of the formwork beams in such a way that the longitudinal axes of the formwork beams are arranged essentially in line, i.e. collinear, and longitudinal displacement of the connected formwork beams is blocked against each other.
  • the formwork supports can thus be releasably connected to one another at the end faces in order to effect a transmission of force along the formwork supports.
  • the stability of the ceiling formwork can advantageously be increased significantly in this way. It is particularly advantageous that a continuous beam effect is achieved which can be taken into account for the necessary load-bearing capacity of the ceiling props. This means that the number of formwork props can be reduced.
  • the first connecting strap is mounted on the first end of the formwork support, ie attached to the first end of the formwork support via a fastening device.
  • the first connecting strap is designed as an adapter, which in particular can also be attached to conventional formwork supports.
  • the location and direction information such as “horizontal”, “vertical”, “top”, “bottom”, refer to a horizontal state of use of the formwork support. “Detachable” means that a connection can be established and released several times, preferably without tools, without significant loss of functionality.
  • the lower belt and the upper belt preferably each have a width (i.e. horizontal extension) of 50 mm to 100 mm, in particular essentially 80 mm.
  • the web preferably has a height (i.e. vertical extent) between the inner sides of the upper and lower belts of 50 mm to 200 mm, in particular substantially 120 mm.
  • the total height of the formwork support is essentially 200 mm with a width of the upper and lower chord elements of essentially 80 mm.
  • the upper belt, the lower belt and the web are preferably each formed predominantly from a wood material.
  • Protective caps, in particular made of plastic, can be provided at the ends of the formwork support.
  • a second connecting strap with a second coupling part for a detachable longitudinal connection with a first coupling part of the further formwork support is mounted on the second end of the formwork support.
  • the connecting straps are provided on the two opposite longitudinal ends of the formwork support.
  • the second connecting strap with the second coupling part is set up for a longitudinal connection with the first connecting strap of the further longitudinal girder, which is identical to the first connecting strap of the formwork girder.
  • the first and the second coupling part preferably differ from one another in order to enable a simple connection of the formwork supports. It is therefore advantageous if the first coupling part is designed as a suspension element and the second coupling part as a receiving element. In this embodiment, the first coupling part is hooked into the second coupling part from above.
  • the first and second connecting tabs are preferably made of metal, preferably steel or aluminum, or of a plastic.
  • a bolt is provided as the first coupling part and / or a bolt receptacle is provided as the second coupling part.
  • the bolt receptacle has a cross-section that is open at the top, so that the bolt can be inserted into the bolt receptacle from above.
  • the second connecting strap has a retaining element above the bolt receptacle for securing against excavation.
  • the retaining element above i.e. at a vertical distance from the bolt receptacle, prevents the formwork carrier from being accidentally lifted vertically upwards from the horizontal position of use.
  • the formwork carrier is pivoted down, the retaining element not being effective in the pivoted down position of the formwork carrier in order to enable the formwork carrier to be removed.
  • the retaining element is movably arranged on the first connecting strap in order to be transferred from an operative position into a dismantling position.
  • the retaining element prevents the formwork carrier from being lifted vertically upwards from the horizontal position of use.
  • the retaining element allows the formwork support to be removed from the horizontal position of use.
  • the second connection tab has a guide element which protrudes upwards, in particular obliquely upwards, from the second coupling part, in particular from the bolt receptacle.
  • the first and / or second connecting tab has an upper support part resting on the inside of the upper strap and / or a lower support part resting on the inside of the lower strap.
  • the first connecting strap has a respective fastening leg on opposite longitudinal sides of the web.
  • the first and second fastening legs are preferably designed as fastening plates which are arranged essentially parallel to the web. This enables stable fastening of the first connecting strap on the formwork support.
  • the first and second fastening legs preferably do not protrude laterally beyond the upper and lower chords of the formwork support.
  • the second connecting strap preferably also has a first and a second fastening leg, so that reference can be made to the explanations given above.
  • the web has at least one through opening at the first end through which a fastening element, in particular a screw, of the first connecting strap is guided.
  • a fastening element in particular a screw
  • a particular advantage of this embodiment is that many formwork supports already have such a through opening (eg for attaching a crane suspension or a side protection adapter), which can thus be used for retrofitting the first connecting bracket.
  • the screw is preferably arranged essentially perpendicular to the main plane of the web between the upper strap and the lower strap. It is particularly preferred if two through openings are provided at a longitudinal distance from one another and each receive a fastening element, in particular a screw.
  • the second connecting strap can be attached to at least one additional through opening at the second end of the formwork support via at least one additional attachment element.
  • two formwork supports are releasably connected to one another in the design described above.
  • the first connecting tab of the formwork carrier is brought into engagement with the second connecting tab of the further formwork carrier so that the formwork carrier and the further formwork carrier are secured against being pulled apart in the longitudinal direction.
  • the longitudinal axes of the formwork beam and the further formwork beam are essentially aligned in the same horizontal plane, i.e. collinear, arranged.
  • the formwork supports are preferably supported by several formwork supports when in use.
  • the further formwork carrier When assembling the ceiling formwork, for example, the further formwork carrier can first be arranged in the essentially horizontal position of use, in which the further formwork carrier is supported with at least one formwork support. The formwork support is then connected to the further formwork support in an intermediate position arranged obliquely to the vertical, then pivoted into the horizontal position of use and placed under it with a further formwork support.
  • the so-called yoke girders which are directly supported on the formwork supports, several cross girders can then be arranged, essentially at right angles to them.
  • the cross beams can be designed in accordance with the formwork beams described above, but a conventional design without first or second connecting straps can also be used. This process is repeated as often as necessary, depending on the size of the slab formwork.
  • a number of formwork panels are positioned on the cross members, so that a ceiling formwork is available for concreting a ceiling element.
  • Telescopic supports each with a lower support part and an upper support part are preferably provided as formwork supports. Due to the longitudinal connection between the formwork supports, at least individual formwork props, in particular between the edge regions of the ceiling formwork, can be free of support legs protruding from the lower prop part.
  • Fig. 1 shows a ceiling formwork 1 with telescopic formwork props 2, which, as usual, each have a lower prop part 3 in the form of an outer tube and an upper prop part 4 displaceable therein in the form of an inner tube.
  • the length of the telescopic formwork prop 2 is adjusted by means of a locking element 5.
  • a nut is provided which is screwed onto an external thread of the lower prop part 3.
  • the formwork props 2 have at the upper ends of the upper prop part 4 holding or support heads 6, on which formwork supports 7 are supported.
  • transverse girders 8 are arranged, essentially perpendicular thereto, on which in turn formwork panels 9 are placed.
  • the tops of the shuttering panels 9 form the shuttering skin on which a concrete ceiling element (or a floor element) is poured.
  • a concrete ceiling element or a floor element
  • the formwork props 2 each have a plurality of support legs 10 on the lateral edge regions of the ceiling formwork 1, which are supported on a floor surface 11.
  • the formwork props 2 in the interior of the ceiling formwork 1 between the side edges of the ceiling formwork 1 are free of such support legs 10, so that the formwork props 2 are only supported on the floor surface 11 via foot plates 12 at the lower ends of the lower prop parts 3. This leaves more space between the formwork props 2.
  • the formwork supports 7 each have an upper belt 13, a lower belt 14 and a web 15 connecting the upper belt 13 to the lower belt 14, so that the formwork supports 7 are I-shaped in cross section (perpendicular to the longitudinal axis).
  • the upper belt 13, the lower belt 14 and the web 15 are in the embodiment shown each mainly formed from a wood material.
  • protective caps 16 made of plastic are provided at the ends of the formwork support 7, protective caps 16 made of plastic are provided.
  • first connection strap 17 with a first coupling part 18 and at the second end of the formwork support 7 a second connection strap 19 with a second coupling part 20 is mounted.
  • the first and second connection tabs 19 are made of metal, preferably steel or aluminum, or of a plastic.
  • the formwork supports 7 can be connected to one another in pairs by hooking the first coupling part 18 of one formwork support 7 into the second coupling part 20 of the other formwork support 7.
  • the first coupling part 18 and the second coupling part 20 are thus set up for a detachable connection with one another.
  • a bolt 21 is provided as the first coupling part 18, and a bolt receptacle 22 in the form of an upwardly open recess is provided as the second coupling part 20.
  • the second connecting strap 19 also has a guide element 23 which protrudes obliquely upward from the second coupling part 20, here the bolt receptacle 20, in order to facilitate the hooking of the bolt 21 into the bolt receptacle 22.
  • the second connecting strap 19 has a retaining element 24 which covers the bolt receptacle 22 so that the bolt 21 strikes the retaining element 24 when it is lifted vertically. As a result, the formwork support 7 is secured against excavation.
  • a plate part is provided as the retaining element 24, which completely covers the bolt receptacle 22.
  • first connecting tab 17 and the second connecting tab 19 each have an upper support part 25 in contact with the inside 13a (ie with the side facing away from the shuttering panel 9) of the upper belt 13 and a lower support part 26 in contact with the inside 14a (ie with the side facing away from the formwork prop 2) of the lower strap 14 of the formwork support 7.
  • a favorable load transfer is thus achieved in the connected state of the formwork supports 7.
  • first connecting tab 17 and the second connecting tab 19 each have a fastening leg 27 on the opposite longitudinal sides 15 a of the web 15.
  • the fastening legs 27 are pushed onto the web 15 in such a way that the first coupling element 18 is arranged in front of the first end face of the I-shaped longitudinal section of the formwork support 7 and the second coupling element 20 is arranged in front of the second end face of the I-shaped longitudinal section of the formwork support 7.
  • the web 15 of the formwork support 7 each has at least one through opening 28, here two through openings 28 at longitudinal distances from one another, which in the assembled state are aligned with fastening openings 29 of the first connecting strap 17 and the second connecting strap 19, respectively, around the arrangement of fastening elements 30, here screws, to enable.
  • the holding head 6 has a first connection element 31, which is set up for a detachable connection to a second connection element 32 at the first end of a transverse rod 33.
  • the transverse rod 33 projects in a horizontal plane essentially perpendicular to the formwork support 7 from the holding head 6.
  • a corresponding second connection element 32 is provided, which is hooked into the corresponding first connection element 31 of the holding head 6 of the adjacent formwork prop 2 (cf. Fig. 1 ).
  • the holding head 6 has a base body 34 made of metal, on which the first connection element 31 for the crossbar 33 and two hook-shaped encompassing elements 35 - which are in connection with Fig. 17ff . are explained in more detail - are formed in one piece.
  • the holding head 6 in the embodiment shown has two first connection elements 31 on opposite longitudinal sides of the holding head 6 for releasable connection with two cross bars 33, so that the formwork prop in the state of use (cf. Fig. 1 ) through the Cross rods 33 is supported in both horizontal directions perpendicular to the formwork supports 7.
  • the cross bar 33 has a bar element 33a, here for example with a square cross section, and brackets 33b at the opposite ends of the bar element 33a.
  • the second connection elements 32 here in the form of retaining bolts, are arranged on the brackets 33b, which are designed as fork elements in the embodiment shown.
  • first connection elements 31 are provided on each longitudinal side of the holding head 6.
  • a receptacle 36 for a retaining bolt 37 of the crossbar 33 is provided as the first connection element 31 of the holding head 6.
  • the holding head 6 has an upwardly directed guide hook 38 adjacent to the receptacle 36, that is to say directly adjacent to the receptacle 36, of the transverse rod 33.
  • the guide hook 38 protrudes obliquely upward from a lower end region of the holding head 6 in order to facilitate the arrangement of the holding bolt 37 during assembly.
  • FIGS. 17 to 20 show the connection of the holding head 6 to a head plate 39 at the upper end of the upper support part 4 of the formwork prop 2.
  • the holding head 6 has a horizontal base 40 with an upper side 40a for supporting the formwork support 7.
  • the two encompassing elements 35 protrude from the floor 40 and, in the assembled state of the formwork support 7, encompass the two opposite side edges of the lower strap 14 of the formwork support 7.
  • the gripping elements 35 are designed as L-angle parts.
  • Two securing elements 41 here in the form of securing pins, are provided on the underside of the base 40, which in the assembled state of the holding head 6 on the head plate 39 essentially fit precisely into corresponding securing elements 42, here in the form of securing openings, of the head part 39 of the formwork prop 2 are plugged.
  • the securing pins are arranged on opposite longitudinal sides of the base 40, each opposite one of the encompassing elements 35. In the embodiment shown, the locking pins are immovably connected to the bottom 40 of the holding head 6.
  • a locking element 43 is provided, which is displaceable to the underside 40b of the floor 40 while keeping a gap free, in order to fasten the holding head 6 to the head part 39 of the formwork prop 2.
  • the locking element 43 is arranged to be displaceable essentially in the longitudinal direction of the holding head 6.
  • a wedge 44 is provided as the locking element 43, which between a clamping position that clamps the head part 39 of the formwork prop (cf. FIGS. 21 to 26 ) and a release position releasing the head part 6 of the formwork prop 2 (cf. Figs. 17-20 ) is movable.
  • the wedge 44 has two wedge parts 45 which are spaced apart from one another in the transverse direction of the holding head 6 and which are connected to one another via a transverse part 46.
  • a holding flange 47 is bent downward from the opposite transverse sides of the base 40.
  • the holding flanges 47 each have two holding openings 48 for slidably receiving the wedge parts 45 of the wedge 44.
  • the transverse part 46 protrudes laterally beyond the wedge parts 45 to such an extent that the wedge 44 is arranged captive on the holding openings 48 of the holding head 6.
  • the holding head 6 also has an anti-rotation element 49 for securing the formwork support 7 against rotation during use.
  • the anti-rotation element 49 has a spring 50 which is positioned between a locking position (cf. Figs. 34 to 37 ) and an assembly or disassembly position releasing the rotation of the formwork support 7 is movable.
  • the spring 50 has a spring clip which can be pivoted between the securing position and the assembly or disassembly position.
  • the spring 50 has a bulge 51 for the temporary attachment of a tool (not shown) for transferring the spring 50 from the securing position into the dismantling position.
  • the bottom 40 of the holding head 6 has a recess 52, a holding section 53 of the spring 50 protruding upward through the recess 52 in the securing position and being lowered into the recess 52 in the assembly or disassembly position.
  • the Holding section 53 has a vertical holding surface 54 which, in the state of use, is applied to a side surface of the lower strap 14 of the formwork support 7.
  • the holding section 53 has a horizontal pressure surface 55 (cf. Fig. 19 ), which facilitates the transfer from the assembly position to the secured position.
  • the spring 50 has an actuating section 56 with the bulge 51 for the tool.

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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)
EP19167089.2A 2019-04-03 2019-04-03 Support de coffrage, dispositif de support de coffrage et coffrage de plafond Active EP3719237B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19167089.2A EP3719237B1 (fr) 2019-04-03 2019-04-03 Support de coffrage, dispositif de support de coffrage et coffrage de plafond
ES19167089T ES2934811T3 (es) 2019-04-03 2019-04-03 Viga de encofrado, dispositivo de soporte de encofrado y encofrado de losas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19167089.2A EP3719237B1 (fr) 2019-04-03 2019-04-03 Support de coffrage, dispositif de support de coffrage et coffrage de plafond

Publications (2)

Publication Number Publication Date
EP3719237A1 true EP3719237A1 (fr) 2020-10-07
EP3719237B1 EP3719237B1 (fr) 2022-11-30

Family

ID=66092078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19167089.2A Active EP3719237B1 (fr) 2019-04-03 2019-04-03 Support de coffrage, dispositif de support de coffrage et coffrage de plafond

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EP (1) EP3719237B1 (fr)
ES (1) ES2934811T3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR744080A (fr) * 1933-04-10
WO2001036761A1 (fr) * 1999-11-16 2001-05-25 The Steel Construction Institute Dispositif de connexion
EP1903163A1 (fr) * 2005-07-11 2008-03-26 Sistemas Técnicos de Encofrados, S.A. Poutre equipee d'elements de couplage d'extremite
DE202013104108U1 (de) * 2013-09-10 2013-09-19 Doka Industrie Gmbh Trägereinheit auf dem Gebiet des Bauwesens
WO2016116532A1 (fr) * 2015-01-21 2016-07-28 Doka Gmbh Support de coffrage et structure de coffrage
WO2016116543A1 (fr) 2015-01-22 2016-07-28 Koninklijke Philips N.V. Procédé et appareil de préparation de nouilles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106084A (en) * 1936-11-09 1938-01-18 Reynolds Corp Joist suspension
JPS61102714U (fr) * 1984-12-13 1986-06-30
WO2015196264A1 (fr) * 2014-06-24 2015-12-30 Mateeva Mariyana Ensemble de raccordement pour poutres de coffrage
US10053875B1 (en) * 2017-07-10 2018-08-21 Doka Gmbh Formwork support system and formwork support prop

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR744080A (fr) * 1933-04-10
WO2001036761A1 (fr) * 1999-11-16 2001-05-25 The Steel Construction Institute Dispositif de connexion
EP1903163A1 (fr) * 2005-07-11 2008-03-26 Sistemas Técnicos de Encofrados, S.A. Poutre equipee d'elements de couplage d'extremite
DE202013104108U1 (de) * 2013-09-10 2013-09-19 Doka Industrie Gmbh Trägereinheit auf dem Gebiet des Bauwesens
WO2016116532A1 (fr) * 2015-01-21 2016-07-28 Doka Gmbh Support de coffrage et structure de coffrage
WO2016116543A1 (fr) 2015-01-22 2016-07-28 Koninklijke Philips N.V. Procédé et appareil de préparation de nouilles

Also Published As

Publication number Publication date
ES2934811T3 (es) 2023-02-27
EP3719237B1 (fr) 2022-11-30

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