EP2357293A1 - Füllstein für Trägerdecken - Google Patents

Füllstein für Trägerdecken Download PDF

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Publication number
EP2357293A1
EP2357293A1 EP11290081A EP11290081A EP2357293A1 EP 2357293 A1 EP2357293 A1 EP 2357293A1 EP 11290081 A EP11290081 A EP 11290081A EP 11290081 A EP11290081 A EP 11290081A EP 2357293 A1 EP2357293 A1 EP 2357293A1
Authority
EP
European Patent Office
Prior art keywords
interjoists
beams
floor
shutter
longitudinal edges
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
EP11290081A
Other languages
English (en)
French (fr)
Other versions
EP2357293B1 (de
Inventor
Jean-Noël Defer
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.)
Rector Lesage SAS
Original Assignee
Rector Lesage 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 Rector Lesage SAS filed Critical Rector Lesage SAS
Priority to PL11290081T priority Critical patent/PL2357293T3/pl
Publication of EP2357293A1 publication Critical patent/EP2357293A1/de
Application granted granted Critical
Publication of EP2357293B1 publication Critical patent/EP2357293B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E04B5/261—Monolithic filling members

Definitions

  • the present invention relates to intervous for floor with beams, having a substantially rectangular periphery defining two longitudinal edges and two lateral edges, the longitudinal edges being intended to bear on the heel of the floor beams and the side edges being intended to cooperate at least with the side edges of interjoists placed end to end to form a row extending over a span of the floor defined between two adjacent beams, said interjoists consisting of a profiled half-shell forming a body.
  • the manufacture of joists of all types, including prestressed concrete joists, is widely used in the building industry.
  • the beams extend parallel between beams or load-bearing walls according to a predefined spacing.
  • the gap between two beams is filled by intermediate elements commonly called interjoists or slabs to form a lost formwork adapted to receive the metal frame and poured concrete forming the compression table of the floor.
  • each type of interjoists has advantages such as for example lightness, mechanical strength, and disadvantages such as for example weight, fragility, aesthetics.
  • Some examples of thin and light interjoists are described in the publications FR 2 786 514 , EN 2,858,343 and FR 2919317 .
  • the publications FR 1428 749 and DE 1 902 154 illustrate curved or arched interjoists to increase their mechanical resistance.
  • the ideal interjoists sought must be light to be easily handled even in large dimensions, mechanically resistant to support the weight of the workers during the realization of the floor and concrete poured from the floor itself and the exchange supported by this floor, fire resistant and weather, aesthetics under the face, and have all the technical features necessary for an easy and reliable implementation of the floor.
  • shutters for closing the spans to pour the screed
  • the present invention aims at further improving the solution proposed above including reducing the volume of material necessary to achieve said interjoists, having the effect of reducing the weight and cost of the interjoists molded, without impairing its technical performance, and by adding to it a shutter at one of its extremities so that it is sufficient for itself.
  • the invention relates to interjoists of the kind indicated in the preamble, characterized in that one end of the interjoists corresponding to one of the side edges is closed by an integrated shutter and formed in one piece with the body. It advantageously extends over a height greater than that of the body of the interjoists, and comprises a base located under the longitudinal edges, intended to bear on a load-bearing member of the floor.
  • the body preferably has a vault-shaped arched section defined substantially by an ellipse and has a thickness substantially constant in its length and in its width, the ratio of the thickness of the half-shell to the length of the interjoists being advantageously be substantially between 0.35 / 100 and 0.5 / 100. In this case, for a thickness of the order of 5 to 6 mm and a length of the order of 1.30 m, the weight of said interjoists will not exceed 5.5 kg.
  • interjoists are made by molding a fiber-based mixture and / or agglomerated wood chips with a binder curable by hot polymerization.
  • Said shutter may have a substantially rounded shape and slope flared towards its base and be connected to the body by an assembly area framed by a first and a second setback.
  • the other end of the interjoists corresponding to the lateral edge is preferably open and forms an assembly zone connected to the body by a recess, this assembly area may cover said shutter of a previous interjoists.
  • said interjoists have transverse grooves extending between the longitudinal edges.
  • the longitudinal edges located at the ends of the transverse grooves are advantageously reinforced and comprise a substantially vertical abutment intended to bear on the side of the heel of the beams having the effect of locking the lateral position of the interjoists between two adjacent beams.
  • the interjoists comprises raised studs distributed on the middle part of the body, intended to wedge height of the metal mesh of the floor by raising it relative to said body.
  • the interjoists according to the invention is obtained according to a manufacturing process in which fibers and / or wood chips, for example resinous wood from sawmill waste, agglomerated by a binder curable by hot polymerization, are mixed.
  • This binder contains, for example, a component of the isocyanate family polymerizable at 100 ° C and enters the material in a proportion of less than 10% and for example between 3 and 5%.
  • other types of binder may also be suitable.
  • other methods may be suitable to obtain the curing of the binder.
  • This mixture is then shaped in a mold under a pressure of about 1000 tons / m 2 at a temperature of at least 100 ° C to obtain the curing of the binder in the interjoists.
  • This material as such exists and is commonly marketed under the trademark Novopan®. It is for example used in the manufacture of furniture, cable drums, transport pallets, and for the first time in the building as interstices according to the publication FR 2,858,641 from the same applicant.
  • this material makes it possible to realize interjoists of very high quality unlike those made of wood fibers agglomerated by cement, which are coarse heavy and brittle, as in the publication FR-A-2,756,305 .
  • This material being very rigid, it allows to realize a interjoists having high mechanical strength for a small thickness and reduced weight.
  • interjoists according to the invention are different from those defined in the publication.
  • FR 2,859,641 its ratio of thickness to the length of the interjoists which is significantly lower and substantially between 0.35 / 100 and 0.5 / 100.
  • its thickness is of the order of 5 to 6 mm and its length of the order of 1.30 m.
  • its weight does not exceed 5.5 kg, which is very significant for the handling and represents a saving of about 20 to 30% of the weight of the interlude of the publication FR 2,858,641 .
  • this low weight makes it possible to further optimize the performance of the finished floor.
  • This manufacturing process has the advantage of giving the intermediate element a smooth appearance making it particularly aesthetic and allowing it to remain visible under the face of the floor if necessary.
  • the interjoists 1 has a substantially rectangular periphery defining two parallel longitudinal edges 2 intended to bear on the heel of the beams (not shown) of a board, and two parallel side edges 3 intended to cooperate with the lateral edges of interlocks 1 adjacent to or near the edge of a wall or load-bearing beam.
  • the interjoists 1 consists of a profiled half-shell defining a body 10, of substantially constant thickness in its length and in its width, with the exception of certain strategic locations detailed below.
  • This interjoists 1 has a vaulted section vaulted substantially defined by an ellipse, which has several advantages.
  • the first advantage lies in its increased mechanical performance as it can withstand higher loads for a lower material thickness compared to the trapezoidal section interjoists of the publication.
  • the second advantage lies in its ease of manufacture since the negative elliptical shape given to the mold makes it possible to deposit a layer of very thin material, which is not possible with a section formed of straight segments with strong inclinations .
  • the arcuate curved section intrinsically gives the interjoists a so-called undercut shape allowing both easy demolding and perfect stacking interjoists 1 of the same shape, in order to reduce clutter and cost of storage and transport of these interjoists 1. Similar sections offering the same performance may also be suitable.
  • the longitudinal edges 2 of the interjoists 1 comprise a longitudinal shoulder extending over almost the entire length of the interjoists 1 and defining a substantially horizontal support 20 (cf. Fig. 5 ) intended to rest on the heel of the beams and make up any play between the beams.
  • this longitudinal shoulder is widened and also defines a substantially vertical stop 21 intended to bear on the flank of the heel of the beams having the effect of locking the lateral position of the interjoists 1 between two adjacent beams (cf. Fig. 4 ).
  • One end of the interjoists 1 corresponding to the lateral edge 3 is closed by an integrated shutter 30 and constituted in one piece with the body 10.
  • This shutter 30 has no longitudinal shoulder and extends over a higher height. to that of the rest of the interjoists 1, so that its base 31 is at a level below the longitudinal edges 2 of about the thickness of the heel of the beams, so that the base 31 can rest on a carrier element of a construction such as a wall or a beam. Thanks to this construction, the interjoists 1 located at the end of a span makes it possible to close off the gap existing between the interjoists 1, the carrier element on which it rests and the adjacent joists bearing on this carrier element. .
  • the interjoin 1 according to the invention is self-sufficient and does not require an insert, as a separate shutter according to the publication FR 2,858,641 .
  • the shutter 30 has a substantially rounded shape and sloping towards its base 31. It is connected to the body 10 by an assembly zone 32 framed by a first and a second recess 33 and 34, the function of which is explained below. after.
  • the other end 4 of the interjoists 1 is open, has no longitudinal shoulder, and forms an assembly zone 40 connected to the body 10 by a recess 41.
  • figure 5 shows the section of the assembly zone 40 of the interjoists 1 (according to the section DD) superimposed on the section of the body 10 of the interjoists 1 (according to the section CC) illustrating the possible interlocking of the one in the 'other.
  • two solutions are conceivable. When interjoists 1 are used as such with their shutter 30, the assembly area 40 of a interjoists 1 can be supported on the first recess 33 defined at the top of the shutter 30 of the interjoin 1 above.
  • the assembly area 40 of a interjoists 1 can be covered by the body 10 of the interjoists 1 previous forming a complementary assembly area.
  • This type of overlap assembly allows a relative longitudinal movement of the interjoists 1 relative to each other to adjust the total length of a row of interjoists 1 placed end to end to the length of the beams or the span, facilitating and reducing interjoists cuts 1.
  • the interjoists 1 comprises a plurality of transverse grooves 5 spaced regularly, but not necessarily, and extending from one longitudinal edge 2 to the other. They have a section in the longitudinal direction V flared to meet the manufacturing constraints (low material thickness and undercut) and may have an equal depth or not.
  • the interjoists 1 comprises five transverse grooves 5, three of which have a depth greater than the other two.
  • These transverse grooves 5 have several functions. The first function is to stiffen the interjoists 1 by increasing its mechanical resistance to bending. The second function is to facilitate the flow of rainwater to avoid that they affect the quality of the concrete that will be poured on interjoists 1.
  • the third function is to increase the thickness of the cast concrete, and therefore its mass and its inertia, in the transverse grooves 5.
  • the fourth function is to facilitate the fixing on the underside of pipes, ducts, false ceilings, etc. Indeed, the thickness of the wall of the interjoists 1 groove bottom 5 is larger and offers a high resistance to tearing forming ideal anchoring points for all types of fasteners such as screws , studs, staples, etc. Pilot holes (not shown) can be provided directly during the molding of the interjoists 1 to facilitate screwing.
  • the longitudinal edges 2 located at the ends of these grooves transverse, 5 are reinforced and include in accordance with the figure 4 at the level of the longitudinal shoulder the substantially vertical stop 21 (cf. Fig. 4 ).
  • the interjoists 1 also comprises studs 6 in relief distributed over the median part of the body 10, designed to wedge up the wire mesh of the floor by raising it relative to the body 10 of the interjoists 1 to obtain a better coating of the concrete around the wire mesh when pouring the compression slab.
  • These pads 6 have for example an elongate shape, oriented transversely, defining a substantially horizontal bearing zone, or may have any other suitable shape.
  • These pads 6 are arranged, in the example shown, between the transverse grooves 5, staggered on either side of the longitudinal median axis of the interjoists 1. Any other provision is possible.
  • these pads 6 have a thickness at the top of 6 to 8 mm for a concrete thickness at the top of the interjoists 1 of 4 cm. This thickness is variable depending on the specifications of the floor.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
EP11290081A 2010-02-12 2011-02-10 Füllstein für Trägerdecken Active EP2357293B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11290081T PL2357293T3 (pl) 2010-02-12 2011-02-10 Wypełnienie dla stropów belkowych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1051004A FR2956421B1 (fr) 2010-02-12 2010-02-12 Entrevous pour plancher a poutrelles

Publications (2)

Publication Number Publication Date
EP2357293A1 true EP2357293A1 (de) 2011-08-17
EP2357293B1 EP2357293B1 (de) 2013-01-09

Family

ID=42732828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11290081A Active EP2357293B1 (de) 2010-02-12 2011-02-10 Füllstein für Trägerdecken

Country Status (3)

Country Link
EP (1) EP2357293B1 (de)
FR (1) FR2956421B1 (de)
PL (1) PL2357293T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996866A1 (fr) * 2012-10-12 2014-04-18 Ligerienne Beton Entrevous
FR3099503A1 (fr) 2019-08-02 2021-02-05 Lesage Developpement Procédé de mise en œuvre d’entrevous de coffrage pour plancher à poutrelles et entrevous de coffrage correspondant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054286B4 (de) * 2011-10-07 2013-07-18 Werzalit Gmbh + Co. Kg Schalungselement, das aus einem Gemisch von zellulosehaltigen Spänen und einem wärmehärtenden Bindemittel gepresst ist

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1428749A (fr) 1965-03-18 1966-02-18 Robinson Building Tech Ltd Forme de moulage pour constructions en béton
DE1902154A1 (de) 1968-01-19 1969-08-28 Kirchner I A Stahlbetonrippendecke
FR2756305A1 (fr) 1996-11-22 1998-05-29 Knauf Plancher en beton a entrevous legers et resistants
FR2786514A1 (fr) 1998-11-26 2000-06-02 Saret France Entrevous a paroi mince
FR2858343A1 (fr) 2003-07-31 2005-02-04 Fimurex Entrevous emboitable moule
FR2858641A1 (fr) 2003-08-04 2005-02-11 Rector Procede de fabrication d'elements intercalaires pour plancher a poutrelles, element intercalaire et plancher obtenu
FR2919317A1 (fr) 2007-07-26 2009-01-30 Imerys Tc Soc Par Actions Simp Entrevous leger a paroi mince.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1428749A (fr) 1965-03-18 1966-02-18 Robinson Building Tech Ltd Forme de moulage pour constructions en béton
DE1902154A1 (de) 1968-01-19 1969-08-28 Kirchner I A Stahlbetonrippendecke
FR2756305A1 (fr) 1996-11-22 1998-05-29 Knauf Plancher en beton a entrevous legers et resistants
FR2786514A1 (fr) 1998-11-26 2000-06-02 Saret France Entrevous a paroi mince
FR2858343A1 (fr) 2003-07-31 2005-02-04 Fimurex Entrevous emboitable moule
FR2858641A1 (fr) 2003-08-04 2005-02-11 Rector Procede de fabrication d'elements intercalaires pour plancher a poutrelles, element intercalaire et plancher obtenu
FR2919317A1 (fr) 2007-07-26 2009-01-30 Imerys Tc Soc Par Actions Simp Entrevous leger a paroi mince.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996866A1 (fr) * 2012-10-12 2014-04-18 Ligerienne Beton Entrevous
FR3099503A1 (fr) 2019-08-02 2021-02-05 Lesage Developpement Procédé de mise en œuvre d’entrevous de coffrage pour plancher à poutrelles et entrevous de coffrage correspondant

Also Published As

Publication number Publication date
PL2357293T3 (pl) 2013-06-28
FR2956421B1 (fr) 2012-08-10
FR2956421A1 (fr) 2011-08-19
EP2357293B1 (de) 2013-01-09

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