FR2757889A1 - Prefabricated slabs for floors in high rise buildings - Google Patents

Prefabricated slabs for floors in high rise buildings Download PDF

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Publication number
FR2757889A1
FR2757889A1 FR9616052A FR9616052A FR2757889A1 FR 2757889 A1 FR2757889 A1 FR 2757889A1 FR 9616052 A FR9616052 A FR 9616052A FR 9616052 A FR9616052 A FR 9616052A FR 2757889 A1 FR2757889 A1 FR 2757889A1
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Prior art keywords
slabs
floor
floors
prefabricated
rise buildings
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FR9616052A
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French (fr)
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FR2757889B1 (en
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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
    • E04B5/18—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members
    • E04B5/19—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members the filling members acting as self-supporting permanent forms
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/043—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement having elongated hollow cores

Abstract

The floor is made of a number of prefabricated concrete slabs (10, 10). The long edges of the slabs are designed to leave a space (12) between two adjacent slabs into which a concrete is poured forming a beam of reinforced concrete (16) which forms a stay rod. The long sides have notches (14, 14) which prevent movement between the slabs.

Description

La présente invention concerne la conception et la réalisation de planchers à partir de dalles préfabriquées permettant de transmettre des efforts horizontaux sans dalle de compression.The present invention relates to the design and production of floors from prefabricated slabs making it possible to transmit horizontal forces without a compression slab.

D'une manière générale, un plancher est destiné à porter des charges verticales d'exploitation d'une part, et à servir de diaphragme de répartition de vent entre les différents éléments de contreventement d'autre part.Generally speaking, a floor is intended to carry vertical operating loads on the one hand, and to serve as a wind distribution diaphragm between the different bracing elements on the other hand.

Aujourd'hui, les principales solutions techniques de construction de plancher et, en particulier des planchers d'immeubles de grande hauteur sont les suivantes:
- dalles pleines traditionnelles coulées en place sur coffrage;
- dalles pleines obtenues à partir de dalles de compression coulées sur
prédalles (précontraintes ou non);
- plancher préfabriqués avec dalle de compression d'épaisseur suffisante
(environ 5 à 7 cm).Today, the main technical solutions for building floors and, in particular, the floors of high-rise buildings are:
- traditional solid slabs cast in place on formwork;
- solid slabs obtained from compression slabs cast on
pre-slabs (pre-stressed or not);
- prefabricated floor with compression slab of sufficient thickness
(about 5 to 7 cm).

Ces solutions sont coûteuses, peu rapides à mettre en oeuvre, et surtout les épaisseurs des planchers sont importantes, principalement pour les grandes portées, ce qui induit une augmentation de la hauteur totale du bâtiment sans gain de volume utilisable (sur un immeuble de quarante étages, on peut avoir une perte de hauteur correspondant à la hauteur d'un étage).These solutions are expensive, not very quick to implement, and above all the thicknesses of the floors are important, mainly for large spans, which induces an increase in the total height of the building without gaining usable volume (on a building of forty floors , you can have a height loss corresponding to the height of a floor).

L'invention se propose d'apporter une solution aux inconvénients soulignés cidessus.The invention proposes to provide a solution to the drawbacks outlined above.

La principale difficulté est la transmission des efforts horizontaux dus au vent et aux séismes entre les différents éléments de structure. Dans le cas de réalisation à partir d'éléments préfabriqués, la transmission des efforts horizontaux d'un élément au voisin s'effectue par la mobilisation au-travers du joint, de bielles inclinées dont l'équilibre est assuré par des chaînages régnant au droit des supports du plancher.The main difficulty is the transmission of horizontal forces due to wind and earthquakes between the various structural elements. In the case of production from prefabricated elements, the transmission of the horizontal forces from one element to the neighbor is effected by the mobilization, through the joint, of inclined connecting rods, the balance of which is ensured by chains reigning at right floor supports.

Les cheminements d'efforts considérés conduisent à prévoir dans le plancher des dispositifs de renfort en béton armé formant tirants afin d'assurer les suspensions d'efforts nécessaires. Ces dispositions de renfort sont en particulier en zone courante du plancher, des tirants filants d'un appui à l'autre placés dans les joints entre dalles, élargis si nécessaire à cet effet.The force paths considered lead to provision in the floor of reinforced concrete reinforcing devices forming tie rods in order to ensure the necessary force suspensions. These reinforcing arrangements are in particular in the common area of the floor, tie rods from one support to the other placed in the joints between slabs, widened if necessary for this purpose.

L'invention concerne un plancher béton préfabriqué à partir de dalles dont la caractéristique est que le profil des rives longitudinales des éléments préfabriqués est conçu de manière à ménager entre deux éléments juxtaposés, un espace libre ou réservation, dans lequel sera mis en place le ferraillage nécessaire au tirant filant dont il est question plus haut.The invention relates to a prefabricated concrete floor from slabs, the characteristic of which is that the profile of the longitudinal edges of the prefabricated elements is designed so as to provide between two juxtaposed elements, a free space or reservation, in which the reinforcement will be put in place. necessary for the drawing which is mentioned above.

De plus, la conception des profils de rives longitudinales prévoit des crantages latéraux dont le but est d'améliorer considérablement la résistance au cisaillement dans le plan du diaphragme des joints entre dalles juxtaposées.In addition, the design of the longitudinal edge profiles provides lateral notches whose purpose is to considerably improve the shear strength in the plane of the diaphragm of the joints between juxtaposed slabs.

Les deux avantages décrits ci-dessus permettent d'une part, de se dispenser du coulage d'une dalle de compression, d'autre part, d'éviter d'avoir à coffrer des chaînages formant tirants entre éléments juxtaposés.The two advantages described above make it possible, on the one hand, to dispense with the casting of a compression slab, on the other hand, to avoid having to form chaining forming tie rods between juxtaposed elements.

D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence au dessin annexé qui en illustre un exemple de réalisation non limitatif.Other characteristics and advantages of this invention will emerge from the description given below with reference to the appended drawing which illustrates a nonlimiting exemplary embodiment thereof.

La figure 1 est une vue en perspective illustrant la première étape de fabrication d'un plancher selon l'invention, constitué par l'assemblage des dalles préfabriquées en usine, avant la réalisation des poutres intégrées en béton armé formant tirant et coulées sur le chantier entre deux dalles juxtaposées. Figure 1 is a perspective view illustrating the first step of manufacturing a floor according to the invention, consisting of the assembly of prefabricated slabs in the factory, before the realization of integrated beams of reinforced concrete forming tie and cast on site between two juxtaposed tiles.

La figure 2 est une vue schématique, en coupe verticale, représentant une poutre intégrée en béton armé formant tirant, et coulée entre deux dalles juxtaposées.Figure 2 is a schematic view, in vertical section, showing an integrated beam of reinforced concrete forming a tie, and poured between two juxtaposed slabs.

Le plancher constituant l'invention est réalisé en assemblant tout d'abord de façon jointives des dalles préfabriquées en usine 10 et 10'.The floor constituting the invention is produced by first joining together factory prefabricated slabs 10 and 10 '.

Le profil des rives longitudinales des dalles 10 et 10' est conçu de manière à ménager entre deux dalles consécutives jointives un espace libre, ou réservation 12.The profile of the longitudinal edges of the slabs 10 and 10 ′ is designed so as to provide between two consecutive adjoining slabs a free space, or reservation 12.

A cet effet, les dalles 10 et 10' comportent des talons inférieurs 20 et 20' en saillie sur leurs faces latérales et qui viennent en butée l'un contre l'autre lors de l'assemblage des dalles.To this end, the slabs 10 and 10 ′ have lower heels 20 and 20 ′ projecting from their lateral faces and which abut one against the other during the assembly of the slabs.

Selon l'invention, on coule en place une poutre en béton armé formant tirant 16 dans chaque réservation 12 de manière à réaliser un plancher constitué par les dalles 10, 10' entre lesquelles sont coulées les poutres intégrées telles que 16.According to the invention, a reinforced concrete beam is cast in place forming a tie rod 16 in each reservation 12 so as to produce a floor constituted by the slabs 10, 10 ′ between which the integrated beams such as 16 are poured.

Les figures 1 et 2 mettent également en évidence les crantages latéraux 14 et 14' qui bloquent les glissements entre dalles.Figures 1 and 2 also highlight the lateral notches 14 and 14 'which block sliding between slabs.

Ainsi l'invention permet de supprimer la dalle de compression rapportée et coulée sur chantier, telle qu'elle existe dans les solutions utilisées jusqu'à ce jour, tout en donnant au plancher obtenu une constitution monolithique.Thus, the invention makes it possible to eliminate the compression slab added and poured on site, as it exists in the solutions used to date, while giving the floor obtained a monolithic constitution.

On notera que l'état de surface du plancher selon cette invention, obtenu en usine, est celui d'une chape refluée. En outre, ce plancher se caractérise par le fait qu'il ne nécessite pas de coffrage longitudinal entre dalles juxtaposées
La dalle de compression ayant généralement une épaisseur comprise en 5 et 7 cm, on constate aisément que pour un bâtiment de quarante étages, le gain de hauteur est de l'ordre d'un étage.Note that the surface condition of the floor according to this invention, obtained in the factory, is that of a reflective screed. In addition, this floor is characterized by the fact that it does not require longitudinal formwork between juxtaposed slabs
The compression slab generally having a thickness of between 5 and 7 cm, it can easily be seen that for a building of forty storeys, the gain in height is of the order of one storey.

En outre, la suppression de la dalle de compression entraîne un gain de temps sur
la mise en oeuvre qui, de plus, peut se faire avec une main d'oeuvre moins qualifiée. In addition, the removal of the compression slab saves time on
the implementation which, moreover, can be done with a less qualified workforce.

En effet, il n'y a plus besoin de chapistes pour obtenir l'aspect fini du plancher qui est obtenu en usine.Indeed, there is no longer any need for painters to obtain the finished appearance of the floor which is obtained in the factory.

II demeure bien entendu que cette invention n'est pas limitée à l'exemple de réalisation décrit et représenté ici mais qu'elle en englobe toutes les variantes.  It remains to be understood that this invention is not limited to the embodiment described and shown here but that it encompasses all variants.

Claims (2)

REVENDICATIONS 1 - Plancher caractérisé en ce qu'il est constitué d'un assemblage de dalles (10 et 10') préfabriquées en usine, dont les profils de rives longitudinales sont conçus de manière à ménager un espace libre (12) entre deux dalles consécutives jointives, dans lequel est coulé sur place une poutre en béton armé (16) formant tirant.1 - Floor characterized in that it consists of an assembly of slabs (10 and 10 ') prefabricated in the factory, whose longitudinal edge profiles are designed so as to provide a free space (12) between two consecutive consecutive slabs , in which is poured on site a reinforced concrete beam (16) forming a tie. 2 - Plancher selon la revendication 1, caractérisé en ce que les rives longitudinales sont munies de crantages latéraux (14, 14') bloquant les glissements entre dalles (10,10'). 2 - Floor according to claim 1, characterized in that the longitudinal edges are provided with lateral notches (14, 14 ') blocking the sliding between slabs (10,10').
FR9616052A 1996-12-26 1996-12-26 FLOORS MADE FROM PREFABRICATED SLABS FOR TRANSMITTING HORIZONTAL EFFORTS WITHOUT COMPRESSION SLAB REPORTED ON SITE Expired - Lifetime FR2757889B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9616052A FR2757889B1 (en) 1996-12-26 1996-12-26 FLOORS MADE FROM PREFABRICATED SLABS FOR TRANSMITTING HORIZONTAL EFFORTS WITHOUT COMPRESSION SLAB REPORTED ON SITE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9616052A FR2757889B1 (en) 1996-12-26 1996-12-26 FLOORS MADE FROM PREFABRICATED SLABS FOR TRANSMITTING HORIZONTAL EFFORTS WITHOUT COMPRESSION SLAB REPORTED ON SITE

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FR2757889A1 true FR2757889A1 (en) 1998-07-03
FR2757889B1 FR2757889B1 (en) 1999-03-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006057615A1 (en) * 2004-11-25 2006-06-01 Roger Ericsson A building element and a building structure comprising the building element
CN105804302A (en) * 2016-05-06 2016-07-27 湖南标迪夫节能科技有限公司 Assembly type cavity prefabricated slab of formwork-erecting-free cast-in-situ cavity floor system
US20210040739A1 (en) * 2018-03-12 2021-02-11 Elastic Potential, S.L. Prefabricated floor element, structure comprising prefabricated floor elements and installation for obtaining the prefabricated floor element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971174A (en) * 2016-05-06 2016-09-28 湖南标迪夫节能科技有限公司 Building method for assembly type cast-in-place cavity building cover

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE521049A (en) *
FR545541A (en) * 1921-12-27 1922-10-13 Floor, wall, terrace and roofing in reinforced hollow bricks
DE904817C (en) * 1949-11-15 1954-02-22 Hans Lehde Box girder made of concrete for ceiling structures without formwork

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE521049A (en) *
FR545541A (en) * 1921-12-27 1922-10-13 Floor, wall, terrace and roofing in reinforced hollow bricks
DE904817C (en) * 1949-11-15 1954-02-22 Hans Lehde Box girder made of concrete for ceiling structures without formwork

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006057615A1 (en) * 2004-11-25 2006-06-01 Roger Ericsson A building element and a building structure comprising the building element
CN101065547B (en) * 2004-11-25 2011-05-25 罗杰·埃里克松 A building element and a building structure comprising the building element
CN105804302A (en) * 2016-05-06 2016-07-27 湖南标迪夫节能科技有限公司 Assembly type cavity prefabricated slab of formwork-erecting-free cast-in-situ cavity floor system
US20210040739A1 (en) * 2018-03-12 2021-02-11 Elastic Potential, S.L. Prefabricated floor element, structure comprising prefabricated floor elements and installation for obtaining the prefabricated floor element

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FR2757889B1 (en) 1999-03-05

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