FR2627205A1 - Prestressed roof structure - uses tensioned cables through rafters with spacers between - Google Patents

Prestressed roof structure - uses tensioned cables through rafters with spacers between Download PDF

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Publication number
FR2627205A1
FR2627205A1 FR8801733A FR8801733A FR2627205A1 FR 2627205 A1 FR2627205 A1 FR 2627205A1 FR 8801733 A FR8801733 A FR 8801733A FR 8801733 A FR8801733 A FR 8801733A FR 2627205 A1 FR2627205 A1 FR 2627205A1
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FR
France
Prior art keywords
prestressing
rafters
spacers
frames
spacing
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Withdrawn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
FR8801733A
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French (fr)
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8801733A priority Critical patent/FR2627205A1/en
Publication of FR2627205A1 publication Critical patent/FR2627205A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/17—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with non-parallel upper and lower edges, e.g. roof trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs

Abstract

The prestressed structure, especially for the roof frame of a house, consists of tensioned cables (10) which pass from one end of the roof to the other through the rafters (3) on a level with spacing (6) between the rafters. The rafters also have plywood panels (9) fitted into grooves in their facing surfaces, and the spacing timbers can be used to support insulating material (11) which is inserted between the rafters. The tensioned cables pass through the line of the centre of gravity of the section formed by the plywood panel and spacing timber. ADVANTAGE - Greater strength and easier assembly.

Description

- D E S C R I P T I O N
PRECONTRAINTE STRUCTURELLE ASSUREE PAR LES CADRES
EN BOIS POUR TOIT ET MURS DE MAISONS A OSSATURE
BOIS.- DESCRIPTION
STRUCTURAL PRE-STRESS PROVIDED BY THE EXECUTIVES
WOOD FOR ROOF AND FRAMEWORK HOUSE WALLS
WOOD.

La présente invention concerne l'assemblage par contrainte des murs et toit de maisons en bois. The present invention relates to the assembly by constraint of the walls and roof of wooden houses.

Le dispositif, objet de l'invention,permet par un assemblage simple d'éléments courants la construction de maisons économiques. The device, object of the invention, allows by simple assembly of common elements the construction of economical houses.

Le moyen, objet de l'invention, est l'application de la précontrainte en méthode d'assemblage. Il est aussi une solution aux problèmes de joints toujours délicats. The means, object of the invention, is the application of prestressing in the assembly method. It is also a solution to the problems of always delicate joints.

Habituellement les divers composants: panneaux ou autres éléments préfabriqués sont assemblés sur chantier à l'aide de clous ou par vissage. Outre le problème des joints à habiller, l'étanchéïté est souvent douteuse. Usually the various components: panels or other prefabricated elements are assembled on site using nails or by screwing. In addition to the problem of joints to be dressed, sealing is often questionable.

Pour parer à ces difficultés une main-d'ouvre de montage, hautement qualifiée, est indispensable. To overcome these difficulties, a highly qualified assembly workforce is essential.

Le dispositif, objet de l'invention, élimine ces inconvénients. The device which is the subject of the invention eliminates these drawbacks.

Le dispositif, objet de l'invention comporte une série de cadres en bois de forme polygonale, généralaement à cinq côtés, matérialisant: - les deux côtés supérieurs: le toit. The device, object of the invention comprises a series of wooden frames of polygonal shape, generally with five sides, materializing: - the two upper sides: the roof.

- les deux côtés verticaux: les murs en élévation.- the two vertical sides: the walls in elevation.

- le côté horizontal: le support de plancher.- the horizontal side: the floor support.

La liaison toit murs est encastrée par collage et emboitement. The roof to wall connection is embedded by gluing and interlocking.

La liaison murs plancher est articulée.  The connection between the walls and the floor is articulated.

Le cadre ainsi constitué est rainuré sur ses deux :
faces et sur quatre côtés du polygone à l'exclusion su support de plancher.The frame thus formed is grooved on both:
faces and on four sides of the polygon excluding the floor support.

Ces rainures servent de logement à la feuille de contre-plaqué incorporée au montage. These grooves are used to house the plywood sheet incorporated into the assembly.

Le cadre est percé, dans le sens transversal,environ tous les mètres, juste au dessus des rainures, pour le passage des fils de précontrainte. The frame is drilled, in the transverse direction, about every meter, just above the grooves, for the passage of the prestressing wires.

Des traverses entretoises sont installées sur le contre-plaqué à l'emplacement des trous transversaux des cadres. Elles sont rainées à leur partie inférieure pour le passage des fils. Crosspieces are installed on the plywood at the location of the transverse holes in the frames. They are grooved in their lower part for the passage of the wires.

L'écartement des cadres correspond à la largeur des
feuilles de contre-plaqué et à la longueur des entretoises.The spacing of the frames corresponds to the width of the
plywood sheets and the length of the spacers.

Il est fonction de la portée admissible du contre-plaqué. It depends on the allowable span of the plywood.

Les éléments sont mis en place et maintenus provisoirement, en phase de montage, par pointage, les fils de précontrainte sont alors tendus. The elements are put in place and temporarily maintained, during the assembly phase, by pointing, the prestressing wires are then stretched.

Sur les traverses horizontales des cadres le plancher
est installé.On the horizontal crosspieces of the frames, the floor
is installed.

Le dispositif, objet de l'invention, permet un débord d'avant-toit important; la stabilité du porte-à-faux
est assurée par la précontrainte.The device, object of the invention, allows a large eave overhang; the stability of the overhang
is ensured by prestressing.

Avec la mise en tension des fils le contreventement de l'ensemble est parfaitement assuré. With the tensioning of the wires, the bracing of the assembly is perfectly ensured.

Le dispositif, objet de l'invention, va être maintenant décrit, à titre d'exemple, à l'aide de dessins annexés. The device, object of the invention, will now be described, by way of example, with the aid of attached drawings.

Planche I, fig. 2 représente une vue en élévation du cadre polygonal en bois. Plate I, fig. 2 shows an elevational view of the wooden polygonal frame.

(1) est la traverse support de plancher solidaire des montants (2) représentant les murs verticaux. (1) is the floor support cross member secured to the uprights (2) representing the vertical walls.

(3) un côté de versant du toit encastré avec les montants. (3) a slope side of the roof recessed with the uprights.

(5) les rainures de logement du contre-plaqué. (5) the plywood housing grooves.

(6) les entretoises de liaison et de passage des fils de précontrainte.  (6) the spacers for connecting and passing the prestressing wires.

(4) reliant les deux versants la pièce métallique. (4) connecting the two sides of the metal part.

(7) servant de support aux murs verticaux et d'appui sur les dés de fondation une base en bois massif. (7) serving as support for the vertical walls and as support on the foundation dice, a solid wood base.

(8) pouvant être réalisé en différentes matières, l'emplacement des murs verticaux et du plancher. (8) can be made of different materials, the location of the vertical walls and the floor.

La figure 1 est une vue de côté du cadre assemblé, (1) le support de plancher. (2) les éléments moisés ossature des murs verticaux, (3) les éléments rampants du toit. Figure 1 is a side view of the assembled frame, (1) the floor support. (2) the molded elements framing the vertical walls, (3) the creeping elements of the roof.

Le montant (2) peut être simple. Dans ce cas le dispositif de l'invention est appliqué sur les murs verticaux. The amount (2) can be simple. In this case, the device of the invention is applied to the vertical walls.

Planche II, figure 3 représente un détail du cadre à son sommet. Plate II, Figure 3 shows a detail of the frame at its top.

(3) formant nervure, visible à l'intérieur, la partie de dessous. (3) forming a rib, visible inside, the bottom part.

(9) dans son logement la feuille de contre-plaqué. (9) in its housing the plywood sheet.

(6) dans ses trois fonctions l'entretoise de précontrainte: - l'écartement des cadres entre eux. (6) in its three functions the prestressing spacer: - the spacing of the frames between them.

- le moyen de précontrainte par le passage des fils.- The prestressing means by the passage of the wires.

- le support de la couverture dans l'exemple du fibrociment.- the support of the cover in the example of fiber cement.

(12) la plaque de couverture fibrociment. (12) the fiber cement cover plate.

Dans la version couverture en tuiles des linteaux seront fixés aux écartements voulus. In the roof tile version of the lintels will be fixed at the desired spacings.

(4) représente la liaison des rampants du cadre, (10) la fils de précontrainte, (11) l'isolation. (4) represents the connection of the frame crawlers, (10) the prestressing wire, (11) the insulation.

Planche III, figure 4 représente le dispositif selon l'invention. Plate III, Figure 4 shows the device according to the invention.

Les cadres assemblés (3). The assembled frames (3).

Les entretoises de précontrainte (6). The prestressing spacers (6).

Les feuilles de contre-plaqué (9). The plywood sheets (9).

(10) le fil de précontrainte muni de son système de blocage (14).  (10) the prestressing wire provided with its locking system (14).

Le dispositif, objet de l'invention, comporte des : fils de précontrainte en acier spécial. L'allongement sous tension en service reste élastique. Dans tous les cas il est supérieur aux variations de longueur des bois. The device which is the subject of the invention comprises: prestressing wires made of special steel. The extension under tension in service remains elastic. In all cases it is greater than the variations in length of the antlers.

Dans ces conditions sont assurés: le parfait contact de contre-plaqué dans ses logements, l'étanchéïté des joints, le contreventement et la stabilité de l'ensemble. In these conditions are ensured: the perfect plywood contact in its housings, the sealing of the joints, the bracing and the stability of the assembly.

Des variantes, non exclusives, restent du domaine de l'invention:
- des cadres de formes différentes.Non-exclusive variants remain within the scope of the invention:
- frames of different shapes.

- une couverture d'une autre nature. - a cover of another nature.

- un tracé différent du passage des fils de précontrainte. - a different layout for the passage of the prestressing wires.

- une autre matiére que le contre-plaqué. - another material than plywood.

- l'emploi en structure de couverture seulement avec, un montage sur des murs en maçonnerie traditionnelle. - the use in roofing structure only with, mounting on traditional masonry walls.

Le dispositif, objet de l'invention, concerne la construction de maisons en bois. The device, object of the invention, relates to the construction of wooden houses.

Il est du domaine du bâtiment.  It is in the building sector.

Claims (6)

REVENDICATIONS 1/ Dispositif de précontrainte utilisable pour la construction de maisons à ossature bois caractérisé en ce qu'il comprend des cables de forme polygonale traversés de percements pour le passage des cadres de précontrainte (10) qu'entourent des traverses entretoises (6) supports de couverture (12). L'espacement des traverses (6) présente le logement d'isolation (11). 1 / Prestressing device usable for the construction of timber frame houses, characterized in that it comprises cables of polygonal shape crossed by holes for the passage of prestressing frames (10) which are surrounded by crosspieces (6) cover (12). The spacing of the crosspieces (6) presents the insulation housing (11). Le même dispositif peut être appliqué sur le montant (2) s'il est simple. The same device can be applied to the upright (2) if it is simple. Le dispositif comprend, installé sous les entretoises, (6) un panneau de contre-plaqué (9) ou tout autre panneau composite maintenu en place par le fil de précontrainte (10). The device comprises, installed under the spacers, (6) a plywood panel (9) or any other composite panel held in place by the prestressing wire (10). 2/ Dispositif selon la revendication 1 caractérisé en ce que les cadres sont rainurés et sont constitués en ce qui concerne le montant (2) d'un simple montant ou de deux montants de moisage de planches en bois. 2 / Device according to claim 1 characterized in that the frames are grooved and are constituted with regard to the amount (2) of a single amount or two amounts of mold wooden planks. 3/ Système selon la revendication 1 caractérisé en ce que les cadres comportent des percements pour le passage des fils de précontrainte (10). 3 / System according to claim 1 characterized in that the frames have holes for the passage of the prestressing son (10). 4/ Dispositif selon la revendication 1 caractérisé en ce que le fil de précontrainte (10) passe par le centre de gravité de la section formée par l'entretoise (6) et le panneau (9). 4 / Device according to claim 1 characterized in that the prestressing wire (10) passes through the center of gravity of the section formed by the spacer (6) and the panel (9). 5/ Dispositif selon la revendication 1 caractérisé en ce que sur les entretoises (6) sont fixés les éléments de couverture (12). 5 / Device according to claim 1 characterized in that on the spacers (6) are fixed the cover elements (12). 6/ Dispositif selon la revendication 1 caractérisé par l'emploi de fils de précontrainte à haute limite élastique (10) avec un moyen de blocage (14).  6 / Device according to claim 1 characterized by the use of prestressing son high elastic limit (10) with a locking means (14).
FR8801733A 1988-02-11 1988-02-11 Prestressed roof structure - uses tensioned cables through rafters with spacers between Withdrawn FR2627205A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8801733A FR2627205A1 (en) 1988-02-11 1988-02-11 Prestressed roof structure - uses tensioned cables through rafters with spacers between

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8801733A FR2627205A1 (en) 1988-02-11 1988-02-11 Prestressed roof structure - uses tensioned cables through rafters with spacers between

Publications (1)

Publication Number Publication Date
FR2627205A1 true FR2627205A1 (en) 1989-08-18

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FR8801733A Withdrawn FR2627205A1 (en) 1988-02-11 1988-02-11 Prestressed roof structure - uses tensioned cables through rafters with spacers between

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2061529A1 (en) * 1969-04-11 1971-06-25 Bossis Robert
US3999338A (en) * 1975-09-18 1976-12-28 Hill-Behan Lumber Company Roof framework employing slotted gable construction
FR2388099A1 (en) * 1977-04-19 1978-11-17 Battais & Cie Roof fixture for scaffolding or safety barriers - has bar passing through rafters and secured by tube, nuts and counter nuts
NL8203546A (en) * 1982-09-13 1984-04-02 Opstal C Bv Van Roof rafter construction for building - has boards in grooves of facing sides and foam plates between these sides and fixed on boards
FR2551789A2 (en) * 1980-10-01 1985-03-15 Harnois Georges Method for converting lofts of houses.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2061529A1 (en) * 1969-04-11 1971-06-25 Bossis Robert
US3999338A (en) * 1975-09-18 1976-12-28 Hill-Behan Lumber Company Roof framework employing slotted gable construction
FR2388099A1 (en) * 1977-04-19 1978-11-17 Battais & Cie Roof fixture for scaffolding or safety barriers - has bar passing through rafters and secured by tube, nuts and counter nuts
FR2551789A2 (en) * 1980-10-01 1985-03-15 Harnois Georges Method for converting lofts of houses.
NL8203546A (en) * 1982-09-13 1984-04-02 Opstal C Bv Van Roof rafter construction for building - has boards in grooves of facing sides and foam plates between these sides and fixed on boards

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