FR2575205A1 - Arrangements improving the mechanical strength, during use of the components of an insulating floor - Google Patents

Arrangements improving the mechanical strength, during use of the components of an insulating floor Download PDF

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Publication number
FR2575205A1
FR2575205A1 FR8419570A FR8419570A FR2575205A1 FR 2575205 A1 FR2575205 A1 FR 2575205A1 FR 8419570 A FR8419570 A FR 8419570A FR 8419570 A FR8419570 A FR 8419570A FR 2575205 A1 FR2575205 A1 FR 2575205A1
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Prior art keywords
insulating
joist
self
interjoist
supporting
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FR8419570A
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French (fr)
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FR2575205B3 (en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/046Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed with distance from another
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17Floor structures partly formed in situ
    • E04B5/23Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/26Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E04B5/261Monolithic filling members
    • E04B5/263Monolithic filling members with a flat lower surface
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17Floor structures partly formed in situ
    • E04B5/23Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/26Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E04B5/266Filling members covering the undersurface of the beams
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Building Environments (AREA)

Abstract

Arrangements aiming to improve the mechanical strength of the components of an insulating prefabricated floor. The insulating floor made according to the invention consists of a self-supporting insulating joist 1 joined to an insulating interjoist block 3 by oblique bearing rebates 4 and inclined bearing planes 8. The insulating joist 1 and the interjoist block 3 both have a trapezoid-shaped transverse cross-section, which is inverted on assembly. The insulating joist 1 is used as permanent formwork for a central vertical I-shaped rib 2 made preferably of reinforced or prestressed concrete, and preferably precast. The horizontal flanges 4 and 5 of this central vertical rib 2 comprise on their internal face, one or more steps, notches or indentations 7 preventing the constituent insulating material of the joist 1 from being extracted. The aim of each of these arrangements and fittings, used together or separately, is to improve the mechanical strength of all the components of the floor, during its use.

Description

La présente invention a pour but d'améliorer la sécurité des personnes effectuant la mise en oeuvre des planchers préfabriqués isolants, en réalisant une meilleure solidarisation de leurs composants,
et un agencement plus mécaniquement adéquat de leurs éléments porteurs et coffrants.
The aim of the present invention is to improve the safety of the persons carrying out the installation of prefabricated insulating floors, by achieving better securing of their components,
and a more mechanically adequate arrangement of their load-bearing and shuttering elements.

Le domaine technique de l'invention est celui des planchers à haute résistance thermique dits "planchers isolants". The technical field of the invention is that of floors with high thermal resistance called "insulating floors".

Un des moyens connus de réaliser ces ouvrages est d'utiliser un panneau en matière isolante, dans l'épaisseur duquel on ménage des gorges servant de coffrage perdu à un plancher en béton armé. Il est également connu que pour réduire le poids et l'encombrement de ces panneaux isolants et coffrants, on limite en général leur largeur à celle correspondant à une seule nervure en béton armé, soit de 50 à 60 cm. Mais les risques de rupture des bords du panneau en matière isolante, déjà sensibles sur les grands éléments, manutentionnés et mis en oeuvre avec des engins de levage, sont trop importånts dans le cas des panneaux de largeur réduite à une seule nervure.Pour pallier cet inconvénient, il est connu qu'on a imaginé de les renforcer en les associant par collage à des planches épaisses de mêmes dimensions, constituées de fibres de bois agglomérées au ciment, et chargées d'apporter au panneau une rigidité d'appoint suffisante pour assurer son intégrité, et par conséquent la sécurité des utilisateurs, en cours de mise en oeuvre. Cette solution, bien connue, offre également l'avantage de protéger la sous-face de l'isolant, en général combustible, contre le risque d'incendie. One of the known means of carrying out these works is to use a panel made of insulating material, in the thickness of which grooves are used as lost formwork for a reinforced concrete floor. It is also known that to reduce the weight and size of these insulating and shuttering panels, their width is generally limited to that corresponding to a single rib of reinforced concrete, ie from 50 to 60 cm. But the risks of rupture of the edges of the insulating material panel, already sensitive on large elements, handled and implemented with lifting devices, are too important in the case of panels of reduced width with a single rib. drawback, it is known that it has been imagined to reinforce them by associating them by gluing to thick boards of the same dimensions, made of wood fibers agglomerated with cement, and responsible for providing the panel with sufficient additional rigidity to ensure its integrity, and therefore user safety, during implementation. This solution, which is well known, also offers the advantage of protecting the underside of the insulation, generally combustible, against the risk of fire.

La récente évolution des règlements de sécurité supprimant, pour certains types d'ouvrages et certaines catégories d'isolants,
l'obligation d'une protection de la sous-face- de l'isolant, qui est onéreuse, il est devenu utile et opportun, afin de profiter de l'avantage économique résultant de cette suppression, de trouver un moyen industriel nouveau pour rendre le panneau isolant et la nervure préfabriquée qui lui est associée, capables à eux seuls d'assurer pleinement la sécurité des personnes circulant sur le plancher en -cours de mise en oeuvre. La présente invention permet d'obtenir ce résultat, en améliorant, par des dispositions adéquates, la cohésion de l'isolant avec la nervure préfabriquée et la solidarisation de tous les éléments du plancher isolant.L'invention, dans sa forme de réalisation préférentielle, s'applique à une solive isolante autoporteuse de section trapézoidale, coffrant une nervure centrale en forme de I, en béton armé ou précontraint ; à cette solive isolante autoporteuse est associé selon l'invention, un entrevous isolant, également de section trapézoidale, reposant sur la solive au moyen de feuillures obliques, et de plans inclinés d'appui.
The recent evolution of safety regulations removing, for certain types of works and certain categories of insulation,
the obligation to protect the underside of the insulator, which is expensive, it has become useful and timely, in order to take advantage of the economic advantage resulting from this removal, to find a new industrial means to make the insulating panel and the prefabricated rib which is associated with it, capable on their own of fully ensuring the safety of the persons circulating on the floor during implementation. The present invention makes it possible to obtain this result, by improving, by suitable arrangements, the cohesion of the insulation with the prefabricated rib and the joining together of all the elements of the insulating floor. The invention, in its preferred embodiment, applies to a self-supporting insulating joist of trapezoidal section, forming a central I-shaped rib, in reinforced or prestressed concrete; associated with this self-supporting insulating joist is associated according to the invention, an insulating interjoist, also of trapezoidal section, resting on the joist by means of oblique rebates, and inclined support planes.

La figure 1 représente, en coupe, l'agencement-des éléments du plancher isolant proposé selon l'invention. Figure 1 shows, in section, the arrangement of the elements of the insulating floor proposed according to the invention.

La figure 2 représente, à une échelle différente, les dispositions prises pour améliorer la cohésion de l'isolant avec la nervure en forme de I. Figure 2 shows, on a different scale, the arrangements made to improve the cohesion of the insulation with the I-shaped rib.

La figure 3 montre, en coupe comme les deux précédents, le fonctionnement mécanique en voûte induit dans le matériau isolant par les dispositions prises selon l'invention. FIG. 3 shows, in section like the previous two, the mechanical functioning in a vault induced in the insulating material by the arrangements made according to the invention.

L'agencement selon l'invention représenté sur la figure 1 comporte une solive isolante autoporteuse (1) constituée d'un profil plein ou alvéolé, en matière plastique alvéolaire de préférence, servant de coffrage perdu à une nervure verticale centrale (2) en forme de I, réalisée de préférence en béton armé ou précontraint. Cette solive isolante autoporteuse (1) est associée un entrevous (3) plein ou alvéolé, également isolant et de section trapézoldale, constitué, de préférence, de matière plastique alvéolaire.Cette association dans laquelle, de façon connue, l'entrevous s'appuie sur la solive, s'opère selon l'invention au moyen de feuillures d'appui obliques (4) et de plans inclinés d'appui (8), et en inversant leurs profils trapézoidaux, la grande base de la solive (1) se trouvant placée à la partie inférieure du plancher isolant, et la grande base de l'entrevous (3) à la partie supérieure. Au moyen de ces dispositions selon l'invention, on induit "dans" et "entre" les matériaux constitutifs de la solive et de l'entrevous, un fonctionnement mécanique analogue à celui d'une voûte, ramenant vers la base de la nervure verticale centrale (2), élément le plus résistant de l'ensemble, la majeure partie des sollicitations exercées à la surface du plancher. The arrangement according to the invention shown in Figure 1 comprises a self-supporting insulating joist (1) consisting of a solid or cellular profile, preferably of cellular plastic, serving as lost formwork to a central vertical rib (2) in shape of I, preferably made of reinforced or prestressed concrete. This self-supporting insulating joist (1) is associated with a solid or honeycomb interjoist (3), also insulating and of trapezoidal section, preferably made of cellular plastic material. This association in which, in known manner, the interjoist on the joist, operates according to the invention by means of oblique support rabbets (4) and inclined support planes (8), and by reversing their trapezoidal profiles, the large base of the joist (1) located at the bottom of the insulating floor, and the large base of the interjoist (3) at the top. By means of these arrangements according to the invention, one induces “in” and “between” the constituent materials of the joist and the interjoist, a mechanical operation similar to that of a vault, bringing back towards the base of the vertical rib central (2), the most resistant element of the whole, most of the stresses exerted on the floor surface.

Cette disposition selon l'invention, en modifiant favorablement la distribution des forces, évite de soumettre les matériaux isolants de la solive et de l'entrevous à des contraintes de cisaillement élevées, comme c'est le cas pour les entrevous isolants de type connu ; elle offre donc l'avantage de pouvoir utiliser pour l'entrevous un matériau moins cher, parce que moins résistant mécaniquement, que celui constituant l'isolant de la solive autoporteuse, et cela sans diminution de la résistance mécanique de l'ensemble des éléments du plancher isolant.This arrangement according to the invention, by favorably modifying the distribution of forces, avoids subjecting the insulating materials of the joist and the interjoist to high shear stresses, as is the case for insulating interjoists of known type; it therefore offers the advantage of being able to use a cheaper material, because it is less mechanically resistant, than that constituting the insulation of the self-supporting joist, and this without reducing the mechanical resistance of all the elements insulating floor.

La figure 2 représente les dispositions- prises sur la nervure verticale centrale (2) réalisée de préférence en béton armé ou précontraint, et qui consistent dans le fait que cette nervure verticale cen trale (2) comporte une aile supérieure horizontale (5) etune aile horizontale inférieure (6), ce qui lui confère la forme d'un I. FIG. 2 represents the arrangements taken on the central vertical rib (2) preferably made of reinforced or prestressed concrete, and which consist in the fact that this central vertical rib (2) comprises a horizontal upper wing (5) and a wing lower horizontal (6), which gives it the shape of an I.

A la partie interne de l'aile supérieure et à celle de l'aile inférieure, sont ménagés, selon l'invention, un ou plusieurs redans, crans ou indentations (7) dont la fonction est de s'opposer à l'extraction de l'isolant constituant le profil plein ou alvéolé de la solive (1) se trouvant encastré entre ces ailes (5) et (6), sous l'effet des charges à caractère réparti ou ponctuel appliqués au bord supérieur et sur les flancs de la solive (1) au cours des opérations de mise en oeuvre du plancher isolant. According to the invention, one or more notches, notches or indentations (7) are provided in the inner part of the upper wing and that of the lower wing, according to the invention. the insulation constituting the solid or honeycomb profile of the joist (1) being embedded between these wings (5) and (6), under the effect of loads of distributed or punctual nature applied to the upper edge and on the sides of the joist (1) during the implementation of the insulating floor.

La figure 3 montre schématiquement le fonctionnement mécanique "en voûte" induit par -les dispositions exposées selon l'invention, dispositions qui consistent à donner une forte inclinaison aux feuillures (4) et aux plans d'appui.(8) pour diminuer les contraintes de cisaillement dans l'isolant. Cette figure montre également comment les sollicitations verticales exercées à la surface du plancher sont conduites, sous la forme de contraintes de compression, vers la base des nervures verticales centrales (2) préfabriquées. FIG. 3 schematically shows the mechanical "vault" operation induced by the arrangements exposed according to the invention, arrangements which consist in giving a strong inclination to the rebates (4) and to the support planes (8) in order to reduce the stresses shear in the insulation. This figure also shows how the vertical stresses exerted on the floor surface are conducted, in the form of compression stresses, towards the base of the prefabricated central vertical ribs (2).

Les dispositions prises selon l'invention, ensemble ou séparement améliorent la cohésion et la résistance mécanique des composants et de l'ensemble du plancher préfabriqué isolant, qui devient ainsi capable d'assurer par lui-même la sécurité des personnes circulant à sa surface pendant les opérations de pose et de coulée de l'ouvrage définitif.  The arrangements made according to the invention, together or separately improve the cohesion and the mechanical resistance of the components and of the entire prefabricated insulating floor, which thus becomes capable of ensuring by itself the safety of the persons circulating on its surface for the laying and pouring operations of the final structure.

Claims (6)

REVENDICATIONS 1) Solive isolante autoporteuse (1) caractérisée parce qu'elle comporte un profil plein ou alvéolé, constitué d'un isolant thermique coffrant une nervure verticale centrale (2) de préférence en béton armé ou précontraint et de préférence préfabriquée. 1) Self-supporting insulating joist (1) characterized because it has a solid or honeycomb profile, consisting of a thermal insulator forming a central vertical rib (2) preferably made of reinforced or prestressed concrete and preferably prefabricated. 2) Solive isolante autoporteuse, selon la revendication 1 caractérisée parce qu'elle est associée par des feuillures d'appui obliques (4) et des plans inclinés d'appui (8) à un entrevous(3) plein ou alvéolé, constitué également d'un isolant thermique. 2) self-supporting insulating joist, according to claim 1 characterized because it is associated by oblique support rabbets (4) and inclined support planes (8) with a gap (3) solid or honeycomb, also consisting of 'a thermal insulator. 3) Solive isolante autoporteuse selon les revendications précédentes, caractérisée parce que la nervure verticale centrale (2) comporte une aile horizontale (5) en partie supérieure, et une aile horizontale (6) en partie inférieure, lui conférant la forme d'un I. 3) Self-supporting insulating joist according to the preceding claims, characterized because the central vertical rib (2) has a horizontal wing (5) in the upper part, and a horizontal wing (6) in the lower part, giving it the shape of an I . 4) Solive isolante autoporteuse selon les revendications 1 et 3 caractérisée parce que les ailes horizontales (5) et (6) de la nervure verticale centrale (2) présentent sur leurs faces internes, un ou plusieurs redans, crans ou indentations (7) s'opposant à l'extraction du matériau isolant de la solive (l) se trouvant encastré entre ces ailes horizontales (5) et (6). 4) self-supporting insulating joist according to claims 1 and 3 characterized because the horizontal wings (5) and (6) of the central vertical rib (2) have on their internal faces, one or more notches, notches or indentations (7) s opposing the extraction of the insulating material from the joist (l) being embedded between these horizontal wings (5) and (6). 5) Solive isolante autoporteuse (1) et entrevous isolant (3) selon les revendications 1 et 2, caractérisée parce que leur section transversale est trapézoldale, et que leur association ou assemblage est réalisé en inversant leurs bases, la grande base de la solive (1) étant à la partie inférieure de l'ensemble constitué, et la grande base de l'entrevous (3) à la partie supérieure du meme ensemble. 5) self-supporting insulating joist (1) and insulating interjoist (3) according to claims 1 and 2, characterized because their cross section is trapezoidal, and their association or assembly is achieved by reversing their bases, the large base of the joist ( 1) being at the bottom of the assembly, and the large base of the interjoist (3) at the top of the same assembly. 6) Solive isolante et autoporteuse (1) et entrevous isolant (3) selon l'ensemble des revendications précédentes, caractérisée par l'induction d'un fonctionnement mécanique "en voûte", réduisant les contraintes de cisaillement dans l'isolant de la solive (1) et de l'entrevous (3). Ce fonctionnement étant consécutif aux dispositions prises selon 1' invention.  6) Insulating and self-supporting joist (1) and insulating interjoist (3) according to all of the preceding claims, characterized by the induction of a mechanical "vault" operation, reducing the shear stresses in the insulation of the joist (1) and the interjoist (3). This operation being consecutive to the arrangements made according to the invention.
FR8419570A 1984-12-20 1984-12-20 ARRANGEMENTS FOR IMPROVING MECHANICAL STRENGTH, DURING IMPLEMENTATION OF THE COMPONENTS OF AN INSULATING FLOOR Expired FR2575205B3 (en)

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FR8419570A FR2575205B3 (en) 1984-12-20 1984-12-20 ARRANGEMENTS FOR IMPROVING MECHANICAL STRENGTH, DURING IMPLEMENTATION OF THE COMPONENTS OF AN INSULATING FLOOR

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FR8419570A FR2575205B3 (en) 1984-12-20 1984-12-20 ARRANGEMENTS FOR IMPROVING MECHANICAL STRENGTH, DURING IMPLEMENTATION OF THE COMPONENTS OF AN INSULATING FLOOR

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FR2575205A1 true FR2575205A1 (en) 1986-06-27
FR2575205B3 FR2575205B3 (en) 1987-06-19

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630480A1 (en) * 1988-04-26 1989-10-27 Cote Francois Self-supporting and formworking joist
FR2774412A1 (en) 1998-01-30 1999-08-06 Francois Cote Self-supporting insulated floor joist
WO2000012834A2 (en) * 1998-08-27 2000-03-09 Jaime Enrique Jimenez Sanchez Prefabricated self-supporting plate made of polystyrene and concrete
FR2790020A1 (en) * 1999-02-18 2000-08-25 Francois Cote Machine and process for manufacture of insulating floor beams involve offering up U-section insulating cladding sections to ends of structural beams and pushing them towards center of beam
WO2000070162A1 (en) * 1999-05-17 2000-11-23 Jaime Enrique Jimenez Sanchez Method for fabricating slabs having polyestyrene arches and prestressed concrete rib and slabs thus fabricated
EP2765253A1 (en) * 2013-02-12 2014-08-13 Siniat International SAS Insulating system with holding element
EP2907933A1 (en) * 2014-02-18 2015-08-19 IsoBouw Systems B.V. Prefabricated floor element

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630480A1 (en) * 1988-04-26 1989-10-27 Cote Francois Self-supporting and formworking joist
FR2774412A1 (en) 1998-01-30 1999-08-06 Francois Cote Self-supporting insulated floor joist
ES2151416A1 (en) * 1998-08-27 2000-12-16 Sanchez Jaime Enrique Jimenez Prefabricated self-supporting plate made of polystyrene and concrete
WO2000012834A3 (en) * 1998-08-27 2000-08-03 Sanchez Jaime Enrique Jimenez Prefabricated self-supporting plate made of polystyrene and concrete
WO2000012834A2 (en) * 1998-08-27 2000-03-09 Jaime Enrique Jimenez Sanchez Prefabricated self-supporting plate made of polystyrene and concrete
ES2161163A1 (en) * 1998-08-27 2001-11-16 Sanchez Jaime Enrique Jimenez Prefabricated self-supporting plate made of polystyrene and concrete
FR2790020A1 (en) * 1999-02-18 2000-08-25 Francois Cote Machine and process for manufacture of insulating floor beams involve offering up U-section insulating cladding sections to ends of structural beams and pushing them towards center of beam
WO2000070162A1 (en) * 1999-05-17 2000-11-23 Jaime Enrique Jimenez Sanchez Method for fabricating slabs having polyestyrene arches and prestressed concrete rib and slabs thus fabricated
ES2161139A1 (en) * 1999-05-17 2001-11-16 Sanchez Jaime Enrique Jimenez Method for fabricating slabs having polyestyrene arches and prestressed concrete rib and machine for fabricating such slabs
EP2765253A1 (en) * 2013-02-12 2014-08-13 Siniat International SAS Insulating system with holding element
FR3001986A1 (en) * 2013-02-12 2014-08-15 Siniat Int Sas INSULATING SYSTEM WITH HOLDING ELEMENT
EP2907933A1 (en) * 2014-02-18 2015-08-19 IsoBouw Systems B.V. Prefabricated floor element
NL2012280C2 (en) * 2014-02-18 2015-08-25 Isobouw Systems Bv FLOOR PART.

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