EP2754778A1 - Hauptstützbalken mit verstellbarer Länge - Google Patents

Hauptstützbalken mit verstellbarer Länge Download PDF

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Publication number
EP2754778A1
EP2754778A1 EP14150374.8A EP14150374A EP2754778A1 EP 2754778 A1 EP2754778 A1 EP 2754778A1 EP 14150374 A EP14150374 A EP 14150374A EP 2754778 A1 EP2754778 A1 EP 2754778A1
Authority
EP
European Patent Office
Prior art keywords
sleeves
secondary beams
central core
beams
primary
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.)
Withdrawn
Application number
EP14150374.8A
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English (en)
French (fr)
Inventor
désignation de l'inventeur n'a pas encore été déposée La
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.)
Alphi SAS
Original Assignee
Alphi SAS
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 Alphi SAS filed Critical Alphi SAS
Publication of EP2754778A1 publication Critical patent/EP2754778A1/de
Withdrawn legal-status Critical Current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
    • 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
    • E04G11/56—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like of telescopic type

Definitions

  • the present invention relates to a primary support beam for slab formwork or the like, and more particularly relates to a primary support beam with adjustable length.
  • a support beam for the construction of lintels by formwork.
  • This beam has an adjustable length through two elements slidably mounted one in the other. To do this, one of the elements has a cross section much lower than the other elements, so as to be received and contained in the latter.
  • the beam of the document FR 2 794 155 A1 is devoid of means for the attachment of secondary beams over its entire length, especially when it is deployed at maximum length.
  • This beam is not usable as primary support beam for slab formwork or the like.
  • the formwork of a slab or the like indeed requires the joining together of a plurality of primary beams by means of secondary beams serving as spacers between said primary beams.
  • Another disadvantage of the beam of the document FR 2 794 155 A1 is that, because of the very different cross-sections of its two constituent elements, its flexural behavior under load is not easily predictable and computable, especially since this behavior varies according to the more or less important deployment of the length of the beam.
  • a first problem proposed by the invention is to provide a primary support beam for slab formwork or the like, having an adjustable length in order to reduce the primary beam references to be held in stock by the supplier of slab formwork material or the like. .
  • the invention aims to provide a primary beam whose adjustability in length as little as possible hinders the need for attachment of secondary beams for the formation of a support structure for slab formwork or the like, while providing a management and simplified use of secondary beams.
  • the invention aims to design a primary beam with flexural behavior under load allowing a possible reinforcement by the provision of props in a simple and intuitive way, without having to make calculations of resistance too complicated.
  • Such a beam has an adjustable length by sliding of the first and second sleeves on the central core. This allows the slab formwork equipment supplier or the like to significantly reduce the number of primary beam references to be available in stock, the length of each primary beam can be adjusted to several particular situations encountered by the masons.
  • central core and each of the first and second sleeves being provided with means for attaching secondary beams, as little as possible is prevented the need for attachment of secondary beams for the assembly of a slab formwork structure or the like.
  • each of the first and second sleeves it is also possible to partially partially slide, on either side of the intermediate section, each of the first and second sleeves to adjust the total length of the primary beam, way that the bending behavior of the primary beam is symmetrical on both sides of the intermediate section of the central core. Calculations of flexural strength under load are thus greatly facilitated, as well as the positioning of possible struts for reinforcing the primary beam.
  • the positioning of the props will in fact be substantially symmetrical and therefore relatively simple and intuitive by the operators on the site.
  • the third sleeve allows the primary beam to have a substantially identical cross section along its length when at its minimum length with the first and second sleeves with maximum overlap of the central core.
  • the primary beam and has along its length a plurality of support zones located at the same level to allow a setting at the same level of elements (such as plates) slab formwork or the like.
  • first, second and third sleeves can be used identically for lateral attachment of secondary beams, the latter can therefore have a single length. The management and use of secondary beams are thus simplified.
  • the primary beam thus has a relatively constant axial moment of inertia along its entire length.
  • the intermediate means of attachment of secondary beams and the first and second attachment means of secondary beams may comprise side channels receiving secondary beam.
  • the attachment of a secondary beam is made by a simple translational movement simultaneously causing a commitment of the secondary beam in the lateral receiving chutes two primary beams arranged apart from each other.
  • the first and second attachment means of secondary beams can be respectively distant intermediate means of attachment of secondary beams of at most about 20 cm.
  • the primary beam may comprise locking means of the first and second sleeves on the central core.
  • Such locking means although they are not necessarily necessary when the primary beam is assembled within a formwork support structure, nevertheless facilitate the handling and installation of the primary beam by avoiding inadvertent sliding of the beams.
  • Such locking means are simple, easy to use, robust and relatively well protected from shocks that can occur in the external environment.
  • the figures 1 and 2 illustrate a particular embodiment of primary support beam 1 according to the invention.
  • the primary beam 1 has a total length L1 minimum while on the figure 2 , the primary beam 1 has a total length L2 maximum.
  • the total length of the primary beam 1 is thus adjustable between the lengths L1 and L2 to suit the different situations that masons may encounter on a construction site.
  • the sleeves 5 and 6 are respectively slidably mounted in the longitudinal direction II on first 20a and second end portions 20b of the central core 2 so as to slide on the central core 2 on both sides, towards and away, intermediate means for attaching secondary beams 3.
  • the intermediate means of attachment of secondary beams 3 are carried by a third sleeve 11 fixed on the central core 2 by rivets 23.
  • the third sleeve 11 has a cross section identical to that of the first 5 and second 6 sleeves.
  • the intermediate means for attaching secondary beams 3 and the first 7 and second 8 means for attaching secondary beams comprise side receiving troughs 12a, 12b of secondary beams, respectively extending longitudinally along the section intermediate 4 of the central core 2 and along the first 5 and second 6 sleeves.
  • the lateral receiving chute 12a is shaped so as to receive in abutment hooking noses 13 of secondary beams 14a to 14h. It is the same for the lateral receiving chute 12b.
  • the hooking noses 13, as well as the attachment noses 9 and 10, have a hook-shaped lower structure engaging in the chute 12a.
  • the bottom 15 of the lateral receiving chute 12a allows the support of the secondary beams 14a to 14h on the primary beam 1, while the raised wing 16 of the lateral receiving chute 12a opposes the withdrawal of the secondary beams 14a to 14h away from the primary beam 1 according to a translational movement illustrated by the arrow 24.
  • the secondary beams 14a to 14h are also provided with attachment noses 13 engaged in a lateral receiving chute 12b of another primary beam 1 so as to maintain the two primary beams 1 at a spacing distance constant throughout their length.
  • the first 7 and second 8 securing means of secondary beams are respectively distant intermediate means of attachment of secondary beams 3 by a distance d of at most about 20 cm.
  • the primary beam 1 comprises locking means 17 of the first 5 and second 6 sleeves on the central core 2.
  • the pins 20 are in fact bolts consisting of a screw 21 and a nut 22.
  • the primary beam 1 is in the configuration illustrated on the figure 1 in which it has a total length L1 minimum. The storage of the primary beam 1 and the transport are thus facilitated.
  • the operator keeps the primary beam 1 with a total length L1 and fixes the hooking noses 9 and 10 on two walls distant from each other. a distance equal to or slightly greater than the total length L1.
  • the secondary beams 14a to 14h have the same length, which facilitates their use and management of their stock.
  • the operator has a formwork plate resting on the top of the primary beams 1 and the secondary beams 14a to 14h by a simple substantially vertical translation movement illustrated by the arrow 25 on the figures 3 and 4 .
  • the operator removes the locking means 17 to increase the length of the primary beams 1 to the total length L2 if necessary. Once the length of the primary beams 1 adjusted, the operator can reinstall the locking means 17.
  • the locking means 17 are however not mandatory from the moment when the attachment noses 9 and 10 are properly secured to the walls.
  • the operator installs another primary support beam 1 away from the primary beam 1, and then, as illustrated in FIG. figure 4 , it has a plurality of secondary beams 14a to 14h by engaging the attachment noses 13 of the latter in the lateral receiving chutes 12a and 12b of the primary beams 1.
  • the distance between the secondary beams 14c and 14d, or 14e and 14f on the one hand, and between the secondary beams 14e and 14f on the other hand, is at most about 20 cm to limit the risks that a man falls between the beams 14c and 14d, 14d and 14e, or 14e and 14f.
  • the operator can judiciously slide identically the first 5 and second 6 sleeves away from the intermediate portion 4 of the central core 2 and thereafter , install the secondary beams 14a to 14h symmetrically on either side of the middle of the intermediate section 4.
  • the load to which the primary beam 1 is then subjected will thus be resumed symmetrically on either side of the middle of the intermediate section 4, which facilitates the prediction of its flexural load behavior and the rapid and intuitive layout of the props to help the primary beam 1 support the load if needed.
  • the upper faces 5a, 6a and 11a of the sleeves 5 and 6 and the intermediate section 4 are at the same level, which also corresponds to the level at which the upper faces 22a to 22h of the secondary beams 14a to 14h. It is thus possible to have a formwork plate on the primary beam 1 and the secondary beams 14a to 14h on one and the same plane.

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)
EP14150374.8A 2013-01-11 2014-01-07 Hauptstützbalken mit verstellbarer Länge Withdrawn EP2754778A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1350280A FR3000977B1 (fr) 2013-01-11 2013-01-11 Poutrelle primaire de soutien a longueur ajustable

Publications (1)

Publication Number Publication Date
EP2754778A1 true EP2754778A1 (de) 2014-07-16

Family

ID=48170665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14150374.8A Withdrawn EP2754778A1 (de) 2013-01-11 2014-01-07 Hauptstützbalken mit verstellbarer Länge

Country Status (2)

Country Link
EP (1) EP2754778A1 (de)
FR (1) FR3000977B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105298113A (zh) * 2015-09-27 2016-02-03 深圳市鈤励科技有限公司 组合式可调模板加固背楞装置
EP2982813A1 (de) 2014-08-05 2016-02-10 Alphi Hauptstützbalken mit verstellbarer länge
EP3073028A1 (de) 2015-03-23 2016-09-28 Alphi Balken mit enden, die mit gelenkverbindungen versehen sind
WO2017093225A1 (de) * 2015-11-30 2017-06-08 Peri Gmbh Schalungsteil und deckenschalung mit einem solchen schalungsteil
CN115126231A (zh) * 2022-06-23 2022-09-30 苏州二建建筑集团有限公司 一种可调节梁底盘扣式模板支架及其施工方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11199012B2 (en) * 2019-10-10 2021-12-14 Titan Formwork Systems, Llc Adjustable beam

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1243862A (fr) * 1959-09-07 1960-10-21 Le Materiel D Entpr Et De Trav Poutre télescopique perfectionnée
US3993282A (en) 1972-12-08 1976-11-23 Composite Construction Systems, Inc. Construction form support member
EP0351243A1 (de) * 1988-07-14 1990-01-17 Kentek Limited Ausziehbarer Bauträger
FR2794155A1 (fr) 1999-05-27 2000-12-01 Alnive Dispositif de soutenement pour la construction de linteaux
EP1234929A1 (de) * 2001-02-22 2002-08-28 Alphi Modulare Stützstruktur einer Schalung für Decken oder ähnliches
US20060042179A1 (en) * 2004-08-05 2006-03-02 Peter Vanagan Slab formwork systems
US20100071141A1 (en) 2008-09-19 2010-03-25 Randall Julian Reiner Variable length beam

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1243862A (fr) * 1959-09-07 1960-10-21 Le Materiel D Entpr Et De Trav Poutre télescopique perfectionnée
US3993282A (en) 1972-12-08 1976-11-23 Composite Construction Systems, Inc. Construction form support member
EP0351243A1 (de) * 1988-07-14 1990-01-17 Kentek Limited Ausziehbarer Bauträger
FR2794155A1 (fr) 1999-05-27 2000-12-01 Alnive Dispositif de soutenement pour la construction de linteaux
EP1234929A1 (de) * 2001-02-22 2002-08-28 Alphi Modulare Stützstruktur einer Schalung für Decken oder ähnliches
US20060042179A1 (en) * 2004-08-05 2006-03-02 Peter Vanagan Slab formwork systems
US20100071141A1 (en) 2008-09-19 2010-03-25 Randall Julian Reiner Variable length beam

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2982813A1 (de) 2014-08-05 2016-02-10 Alphi Hauptstützbalken mit verstellbarer länge
FR3024744A1 (fr) * 2014-08-05 2016-02-12 Alphi Poutrelle primaire de soutien a longueur ajustable
EP3073028A1 (de) 2015-03-23 2016-09-28 Alphi Balken mit enden, die mit gelenkverbindungen versehen sind
CN105298113A (zh) * 2015-09-27 2016-02-03 深圳市鈤励科技有限公司 组合式可调模板加固背楞装置
CN105298113B (zh) * 2015-09-27 2017-06-23 深圳市鈤励科技有限公司 组合式可调模板加固背楞装置
WO2017093225A1 (de) * 2015-11-30 2017-06-08 Peri Gmbh Schalungsteil und deckenschalung mit einem solchen schalungsteil
US10640994B2 (en) 2015-11-30 2020-05-05 Peri Gmbh Ceiling formwork comprising a formwork part having a compensation element
CN115126231A (zh) * 2022-06-23 2022-09-30 苏州二建建筑集团有限公司 一种可调节梁底盘扣式模板支架及其施工方法

Also Published As

Publication number Publication date
FR3000977A1 (fr) 2014-07-18
FR3000977B1 (fr) 2015-12-25

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