EP1009891B1 - Dalle alveolee en beton avec dispositif de securite - Google Patents
Dalle alveolee en beton avec dispositif de securite Download PDFInfo
- Publication number
- EP1009891B1 EP1009891B1 EP98921558A EP98921558A EP1009891B1 EP 1009891 B1 EP1009891 B1 EP 1009891B1 EP 98921558 A EP98921558 A EP 98921558A EP 98921558 A EP98921558 A EP 98921558A EP 1009891 B1 EP1009891 B1 EP 1009891B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slab
- hollow slab
- cells
- concrete
- aforementioned
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
- E04G21/145—Means in or on the elements for connecting same to handling apparatus specific for hollow plates
Definitions
- the subject of the present invention is a slab concrete cell with a handling device of security.
- the honeycomb slab is a hollow slab prefabricated in reinforced or prestressed concrete, which can be used as a floor element in construction both collective and individual housing, buildings for professional use such as schools, shops, hospitals, hotels and offices, or even factories, warehouses, parking lots, flat roofs, etc.
- the alveoli made of cylindrical hollow parts can be used for the passage of sheaths or cables.
- Honeycomb slabs are manufactured usually in a vibrating mold open to the part higher.
- the face in contact with the bottom of the mold is smooth, opposite side, in the open air during pouring being rough.
- the tiles have to be painted directly, they are used with the smooth part in below.
- they are to be plastered or given a coated, they are used with the rough part in below. This side, located at the manufacturing side open mold where the surface is poorly controlled is therefore irregular. The plaster layer adheres relatively poorly.
- the frame is most often formed of wires of longitudinal steel arranged only at the part lower, below the alveoli. Handling usually done by crane, using hooks fitting into the alveoli at both ends of the slab. The absence of reinforcement at the top makes this fragile one and it happened that it broke above hooks causing the fall of the slab in sometimes causing more or less serious accidents.
- Certain dimpled slabs such as those described in patents N ° BE 858 167 (in the name of CUYVERS) and N ° DE 2 422 192 (on behalf of Otto HOFMANN) have reinforcements over their entire length transverse passing over the alveoli. These reinforcements unnecessarily increase the cost price of slabs. Indeed, the upper part of these is subjected only to compressive forces and only the hoops at the ends have a reason when handling is done by hooks inserted into the alveoli. It should also be noted that these hooks cannot be used when the ends slabs once installed are too close to a wall.
- honeycomb slabs have steel lifting loops provided at the ends of the slabs.
- this system requires a spreader special rented by the manufacturer.
- the arrangement of loops, located in recesses of the slab makes more complex and therefore more expensive manufacturing.
- the device according to the present invention has aim to remedy these drawbacks. It allows indeed, without significantly increasing the cost of manufacturing honeycomb slabs, handling them in safe with type lifting hooks current even when the ends of these slabs are very close to a wall.
- the device according to the invention applies to dimpled slabs 1 similar to that shown on Figure 1 and consisting of a concrete body comprising a series of 2 longitudinal cylindrical cells and reinforcing bars 3 generally parallel to these cells arranged at the bottom.
- These slabs made of vibrated concrete prestressed or not, are of cross section substantially trapezoidal and generally present on their sides one or more ribs 4 intended to allow the concrete keyed cast over to hang and form thus a perfectly secured whole.
- honeycomb slabs 1 include, in particular near each of their ends, complementary shaped frames arches 5 fixed to the longitudinal bars 3 and passing over cells 2 or a part of them. These hoops give the upper part of the slab a strength to safely handling by means of lifting hooks 6 (figure 2).
- These arches can be simple ( Figures 1 and 4) or multiple ( Figure 5) and are preferably made common concrete steel, but they can be made another metal or synthetic material reinforced with glass or carbon fibers. Attaching them to irons 3 longitudinal reinforcement can be performed by means of loops, soldering or any other suitable means.
- the honeycombed tiles 1 according to the invention may have hoops 5 arranged at a certain distance of said ends and associated with pre-drilled holes 7 allowing the hooks 6 to be introduced into the cells from the top of tiles 1 (Figure 3).
- the bottom of the mold will advantageously include grooves or ribs so as to obtain an underside ribbed 8 of the honeycombed slabs 1, these streaks being able be longitudinal ( Figure 5) or present any other configuration.
- reinforcement hoops 5 does not require any modification of the usual means of manufacturing hollow core slabs and, in particular does not interfere with placement and extraction alveoli-forming nuclei that move parallel to the axis of the slab.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Rod-Shaped Construction Members (AREA)
Description
- La dalle pleine coulée sur place qui présente deux inconvénients principaux : une durée de mise en oeuvre importante provoquée par la mise en place et le retrait des coffrages et par la confection de l'armature, et surtout un poids élevé nécessitant des fondations conséquentes, en particulier pour les immeubles comportant de nombreux étages.
- Les hourdis de brique ou de béton qui, par rapport à la dalle pleine, permettent d'alléger sensiblement la construction, mais au prix d'un temps de main d'oeuvre entraínant un coût de réalisation souvent excessif. Cette technique nécessite en effet la mise en place préalable d'une série de poutres rapprochées entre lesquelles sont posés manuellement un grand nombre de hourdis. En outre la sous-face de l'ouvrage composée d'éléments de textures différentes rend les travaux de finition malaisés.
Claims (5)
- Dalle alvéolée en béton précontraint ou non, constituée d'un corps en béton comportant une série d'alvéoles (2) cylindriques longitudinales et des fers d'armatures (3) disposés au-dessous de celles-ci en position d'utilisation, cette dalle étant destinée à être utilisée comme éléments de plancher pour la construction d'immeubles de tous genres, ladite dalle comportant des armatures en forme d'arceau (5) fixées sur les fers d'armature (3) et disposées dans des plans transversaux aux fers d'armatures de manière à passer au-dessus d'une partie ou de la totalité des alvéoles (2)
caractérisée en ce que les armatures en forme d'arceau (5) sont fixées sur les fers d'armature (3) uniquement aux deux extrémités de la dalle de façon à renforcer la partie supérieure du béton seulement dans la zone sur laquelle s'exerce les efforts de levage provoqués par des crochets de manutention (6) insérés dans lesdites alvéoles, lesdits arceaux étant fixés sur les fers d'armature (3) par soudure ou au moyen de boucles. - Dalle alvéolée selon la revendication 1, se caractérisant par le fait que les arceaux (5) sont associés à des trous pré-percés (7) permettant d'introduire les crochets de manutention (6) dans les alvéoles (2) par le dessus de ladite dalle.
- Dalle alvéolée selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les arceaux (5) sont réalisés en métal.
- Dalle alvéolée selon la revendication 1, se caractérisant par le fait que les arceaux (5) sont réalisés en matière synthétique renforcée de fibres de verre ou de carbone.
- Dalle alvéolée selon l'une quelconque des revendications précédentes, se caractérisant par le fait qu'elle comporte une sous-face striée (8) de manière à améliorer l'adhérence d'enduit ou de plâtre.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9705038A FR2762340B3 (fr) | 1997-04-18 | 1997-04-18 | Dispositif de securite pour dalles alveolees en beton et dalles comportant ce dispositif |
FR9705038 | 1997-04-18 | ||
PCT/FR1998/000780 WO1998048128A1 (fr) | 1997-04-18 | 1998-04-17 | Dispositif de securite pour dalles alveolees en beton et dalles comportant ce dispositif |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1009891A1 EP1009891A1 (fr) | 2000-06-21 |
EP1009891B1 true EP1009891B1 (fr) | 2004-06-23 |
Family
ID=9506244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98921558A Expired - Lifetime EP1009891B1 (fr) | 1997-04-18 | 1998-04-17 | Dalle alveolee en beton avec dispositif de securite |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1009891B1 (fr) |
DE (1) | DE69824745T2 (fr) |
ES (1) | ES2224393T3 (fr) |
FR (1) | FR2762340B3 (fr) |
WO (1) | WO1998048128A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1293266C (zh) * | 2003-09-26 | 2007-01-03 | 邱则有 | 一种空腔模壳构件 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH313490A (fr) * | 1953-03-13 | 1956-04-15 | Gachet Max | Bâtisse |
FR1148327A (fr) * | 1956-05-02 | 1957-12-06 | élément préfabriqué pour la confection de planchers | |
FR1183531A (fr) * | 1957-09-28 | 1959-07-08 | élément de plancher préfabriqué | |
DE2422192A1 (de) * | 1974-05-08 | 1975-11-13 | Otto Hofmann | Vorgefertigtes deckenbauelement |
BE858167A (nl) * | 1977-08-26 | 1977-12-16 | Cuyvers Edward G | Welfselelement en inrichting ter vervaardiging van dergelijke welfselelementen |
DE3310482A1 (de) * | 1983-03-23 | 1984-09-27 | Heinrich Dr.-Ing. 7000 Stuttgart Bechert | Betontraeger, -tragplatte od. dgl. |
FR2592080B1 (fr) * | 1985-12-23 | 1988-08-12 | Bulte Jacques | Poutrelle alveolee en beton |
-
1997
- 1997-04-18 FR FR9705038A patent/FR2762340B3/fr not_active Expired - Lifetime
-
1998
- 1998-04-17 EP EP98921558A patent/EP1009891B1/fr not_active Expired - Lifetime
- 1998-04-17 ES ES98921558T patent/ES2224393T3/es not_active Expired - Lifetime
- 1998-04-17 WO PCT/FR1998/000780 patent/WO1998048128A1/fr active IP Right Grant
- 1998-04-17 DE DE69824745T patent/DE69824745T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1998048128A1 (fr) | 1998-10-29 |
ES2224393T3 (es) | 2005-03-01 |
FR2762340A1 (fr) | 1998-10-23 |
DE69824745T2 (de) | 2005-08-18 |
FR2762340B3 (fr) | 1999-06-25 |
DE69824745D1 (de) | 2004-07-29 |
EP1009891A1 (fr) | 2000-06-21 |
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