Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/84—Walls made by casting, pouring, or tamping in situ
  • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
  • E04B2/8652—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties located in the joints of the forms

Definitions

• the present invention relates to a holding device in position of two plates forming a hollow formwork element. It also relates to a formwork element equipped with such a device.
• the formwork elements are formed of two parallel plates held apart by spacers.
• the spacers are generally metal parts directly molded into the plates.
• the height of the plates is generally limited to 25 cm high.
• the formwork elements are usually made by stacking a multitude of pairs of plates braced. It is an expensive technique in time and manpower.
• Patent EP-A-0374064 (BEST) and FR-A-1591499 are known.
• the spacers comprise at their ends curved ends inserted into complementary shaped housing formed on the uprights.
• these ends are bent so as to pierce the plates during their successive interlockings, which has the effect of complicating the establishment of the position of the holding devices in position and the embodiment of the formwork elements.
• the present invention aims to remedy this state of affairs, particularly because it allows to assemble plates constituting a formwork element in a simple and fast manner.
• the invention also aims to form shuttering elements from plates of large dimensions (height greater than 1.5 m). Another object of the invention is to facilitate the mounting of the spacers in the plates.
• Another object of the invention is to provide a shuttering element of simple design, which is quick to assemble and easy to handle.
• a holding device in position of two plates forming a hollow formwork element for the realization of a double-walled structure, said device consisting of two parallel uprights joined by removable transverse spacers, each of said uprights being intended to be inserted into one of said plates, characterized in that said spacers comprise at their ends hooks inserted into complementary shaped housing made on the uprights, said uprights having a T-shaped cross-section and said hooks being configured to be in the extension of the T-foot.
• This technical solution makes it possible to keep the plates in position simply, quickly and efficiently.
• the holding device according to the invention has few parts and allows for formwork elements more stable than those of the prior art due to the reduction of games that can exist between the different parts.
• FIG. 1 is a perspective view of a shuttering element made according to the invention
• FIG. 2 represents an exemplary embodiment of the device that is the subject of the invention
• FIG. 3 is a partial perspective view of a preferred embodiment of the device that is the subject of the invention.
• FIG. 4 schematically represents the different mounting steps of the device of the invention in its preferred embodiment
• FIG. 5 is a perspective view of the spacer shown in FIG. 4;
• FIG. 6 is a top view of the shuttering element produced according to the invention.
• FIG. 7 is a partial perspective view of the shuttering element on which the positioning of the device forming the subject of the invention is shown.
• the formwork element according to the invention is particularly intended for the realization of residential walls by linear juxtaposition and concrete filling of common aggregates. It is preferentially a concrete having aggregates 0-16 mm and having a plastic consistency in the sense of the standard NF P 18-305.
• the recommended cement dosage is 350 kg / m 3 (B25 concrete).
• the formwork element can also be used for carrying empty sanitai're facade carpentry, pillar, lintel, arch, gable, Genoese, pool, etc.
• the shuttering element can be coated externally by a thick system of hydraulic binders mortar and internally by spray plaster or glued plasterboard.
• the formwork element is formed by two parallel plates 1a, 1b. These plates are made of expanded polystyrene 11, the outer wall of said plates being covered with a coating 10 based on plant fibers coated with a cementitious material, other materials may be used according to the structure to be produced.
• the plates 1a, 1b are advantageously made of expanded polystyrene
• Fibralith® allows the application of external and internal hydraulic coatings.
• the plates 1a and 1b are held in position by transverse spacers 3 connected to uprights 2a and 2b intended to be inserted respectively in the plates 1a and 1b.
• the arrangement of the spacers 3 and the two uprights 2a and 2b form a ladder profile.
• the uprights 2a and 2b are made of PVC and are made from a T-shaped section, the length of the bar of the T being about 40 mm and the length of the foot of the T being about 20 mm. Other materials and other profiles can be used.
• the uprights 2a, 2b advantageously have a length greater than 1.5 m, preferably greater than or equal to 2 m, and are joined by a series of spacers 3 regularly spaced along the entire length of said amounts.
• the uprights 2a and 2b are intended to be inserted in housings 6 provided in the plates, respectively 1a and 1b.
• the housings 6 have a T shape, complementary to the shape of the cross section of the uprights 2a, 2b and spacers 3.
• the lower ends of the uprights 2a and 2b are first retracted into the housing 6 and the entire device is pushed manually (in the direction of the arrows in Figure 7) until the final establishment.
• the specific configuration of the uprights 2a, 2b and spacers 3 allows to simply and quickly form a ladder-shaped holding device whose geometry facilitates its implementation in the plates 1a, 1b.
• the spacers 3 are advantageously made from a strip of galvanized steel strip about 6/10 th thick, about 19 mm wide and about 32 cm long. It has been found that these relatively small dimensions are sufficient to withstand the pressure of the concrete. Other materials and other profiles can be used.
• the length of the spacers 3 is defined according to the thickness of the desired concrete web. A sail thickness of 16 cm and a total uncoated wall thickness of about 28 cm being preferred.
• the spacers 3 are fixed permanently on the uprights 2a, 2b. Referring to Figure 2, the spacers 3 are fixed by welding points 30 on the uprights 2a, 2b.
• the spacers are identical to each other. According to a preferred embodiment of the invention, the spacers
• the spacers 3 advantageously comprise at their ends a male element inserted into a complementary female element arranged on the uprights 2a, 2b.
• the spacers 3 have at their ends hooks 300a, 300b inserted in housing 200a, 200b of complementary shape formed on the uprights 2a, 2b.
• spacers 3 are made from a strip of galvanized steel strip, said tape can be folded at both ends about 2 cm.
• the hooks 300a, 300b are configured to be in line with the foot of the T (FIGS.
• the blocks are arranged one after the other in order to achieve the entire construction perimeter.
• Each block is fixed to the ground and secured to the previous block in its upper part by horizontal blocks.
• the reinforcement is set up at the corners and then at the right of the openings, lintels up and down, and the high chaining. After checking the walls, the concrete is poured in three passes until the arase. Twenty-four hours after the pouring of the concrete, it is possible to set up all the windows by positioning them like a drawer and to start either a slab of floor or the roof.
• the construction out of water - out of air of a house of 100 m 2 is done in less than one week to two people instead of four weeks for a traditional construction;

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Applications Claiming Priority (2)

Publications (1)

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Cited By (1)

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Family Cites Families (5)

• 2005
  • 2005-09-29 FR FR0509928A patent/FR2891290B1/fr not_active Expired - Fee Related
• 2006
  • 2006-09-29 EP EP06808219A patent/EP1963594A1/de not_active Withdrawn
  • 2006-09-29 WO PCT/FR2006/002208 patent/WO2007036643A1/fr not_active Ceased

Non-Patent Citations (1)

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