Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B15/00—Nails; Staples
  • F16B15/0023—Nail plates
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/38—Connections for building structures in general
  • E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
  • E04B1/49—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses with self-penetrating parts, e.g. claw dowels
• • 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
  • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
• • 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
  • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
  • E04B2005/232—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with special provisions for connecting wooden stiffening ribs or other wooden beam-like formations to the concrete slab
  • E04B2005/237—Separate connecting elements

Definitions

• the present invention relates to a mixed wood-concrete floor comprising a set of wooden beams resting on supports and linked to a concrete slab.
• the object of the present invention is to provide a mixed wood-concrete floor in which the problem of the transmission of the shear force between the wood and the concrete has been solved in a simple and therefore inexpensive manner.
• composite wood-concrete floor comprising a set of wooden beams resting on supports and linked to a concrete slab, characterized in that the connection between the wood and the concrete is ensured by metal plates comprising points, each plate having part of its points driven into the beam and at least one other part of its points embedded in the concrete.
• the invention also relates, on the one hand, to a metal plate with spikes for producing a floor of the above type, characterized in that it comprises a zone transverse devoid of points so as to allow folding of the plate, and on the other hand a metal plate with points for producing a floor of the above type, characterized in that it comprises at least a first transverse zone having points directed on one side of the plate and at least one other transverse zone comprising points directed on the other side of the plate
• the invention also relates to a method of manufacturing a floor of the type described above, characterized in that spiked plates are fixed to the upper part of wooden beams by driving into the beam of a first set of points arranged on a first part of the plate, the plate comprising at least a second part provided with points, which is arranged projecting with respect to the beam, in that the beams are placed on supports, in that the '' is placed between the beams of waterproof formwork panels, in that there is a distribution frame above the beams and in that concrete is poured over the whole so as to cover said second parts of said plates metallic.
• point plates are fixed to the upper part of the beam by driving into the beam a first set of points arranged on a first part of each plate, each plate comprising at least a second part provided with spikes and arranged projecting relative to the beam.
• the subject of the invention is also a method of manufacturing a floor of the type described above, characterized in that point plates are fixed to the surface of beams already in place on supports, by driving into the beam of a first set of points arranged on a first part of the plate, the plate comprising at least a second part provided with points, which is arranged projecting relative to the beam, in that one places between the beams of the formwork panels waterproof, in that there is a distribution frame and in that concrete is poured over the whole.
• the invention has the advantage of providing a light construction. Indeed, it is planned to make a mixed wood-concrete floor with lightweight cellular concrete whose specific mass is between 600 kg / m 3 and 1600 kg / m 3 , preferably 1400
• FIG. 1 represents a perspective view of a first solution of the floor according to the invention with parts cut away
• FIG. 2 represents a section perpendicular to the beams of the solution represented in FIG. 1,
• FIG. 3 represents a section parallel to the beams between two beams of the solution represented in FIG. 1,
• FIG. 4 represents a section perpendicular to the beams of an alternative embodiment of the floor according to the invention
• FIG. 5 represents a section perpendicular to the beams of a variant using point plates with points directed in two directions
• FIG. 6 represents a section perpendicular to the beams of another variant
• FIG. 7 is a view from the side of an example of a point plate, before folding, which can be used in the example of figure 6,
• FIG. 8 is a partial plan view of the plate of FIG. 7,
• FIG. 9 is a view from the side of an example of a point plate which can be used in the example of FIG. 5, and
• FIG. 10 is a partial plan view of the plate in FIG. 9.
• the floor shown in Figures 1, 2 and 3 includes wooden beams 1. For clarity, only two beams have been shown in the figures. These beams are shown in solid wood, but they could also be in wood assembled by gluing. Each beam 1 has two longitudinal shoulders at its upper part on which rest panels 4, which serve as lost formwork.
• the panels 4 can be of any material, for example wood, reconstituted wood; they may include insulation and they must have sufficient bending strength to support the concrete 3 when the latter is put in place.
• a distribution frame 15 intended to be embedded in the concrete 3 is placed above the beams 1.
• the beams-concrete connection is made by means of point plates, for example rectangular plates having points on one of their faces.
• the plates can be arranged in pairs, on either side of the upper part of reduced width of the beam delimited by the shoulders described above, so that the plates protrude above the upper surface of the beams.
• the points of the lower part of each plate are driven into the beam, while the points of the upper part of the plates are intended to be embedded in the concrete 3.
• the location of the shoulders beams 1 can for example be chosen so that the height of the upper part of reduced width of the beams is equal to half the height of the plates.
• point plates 2 on which the points are made by stamping.
• Such plates have the advantage of having on the one hand spikes, but also openings which also cooperate with the concrete. Plates of this type are commercially available for fixing structural parts to one another and are for example sold under the name of "Wolf connectors" (registered trademark) or “Gang-Nail system connectors” (registered trademark). A description of one of these point plates is also found in patent CH 644,173.
• the concrete 3 of the floor described above can for example be a lightweight cellular concrete of the "NEOFOR” type (registered trademark) which has a specific mass of 1400 kg / m 3 significantly lower than that of traditional concrete.
• the use of cellular concrete of the "NEOFOR” type has still other advantages; in particular, it is fluid and pasty when poured, which allows good coating of the plates 2, in particular the tips and openings.
• such a concrete has good sound and thermal insulation, which makes it possible to deposit the final coating 5 directly on its surface.
• the placing of this concrete does not require vibration; given its fluidity, this material is put directly in place.
• the spike plates 2 are fully covered, which is an advantage because they are so better protected from rust and the whole structure is aesthetic.
• FIG. 4 An alternative embodiment of the floor according to the invention is shown in FIG. 4. Such an alternative is more particularly indicated in the case of renovation of a floor whose beams are already in place. In such a case, it is not possible to create shoulders on the beams.
• the plates can be placed directly against the side faces of the beams using small, easily transportable hydraulic clamps.
• FIG 5 shows a section through another alternative embodiment of a floor according to the invention.
• the point plates 2 ′ were specially made for the production of the floor according to the invention.
• These plates 2 ' also shown in Figures 9 and 10, are intended to be arranged horizontally on the upper surface of the beams. They include points 7 arranged on one side of the plate and intended to be planted in the upper face of the beam 1 and points 8 arranged on the other side of the plate and intended to be embedded in the concrete.
• the purpose of this variant is to use plates 2 'of greater width of the slab than that of the variant shown in Figures 1 to 4. This way of proceeding is designed to improve the distribution of the shearing force.
• support shoulders for the formwork panels 4 can be produced by means of slats 6 as shown for example in FIG. 5.
• the formwork is not removed after placing the concrete, so as to constitute a ceiling at the French.
• the point plates 2 and 2 ′ are entirely covered with concrete, which ensures better transmission of the shearing force.
• FIG. 6 there is shown an alternative embodiment of the invention combining the simplicity of that shown in Figures 1 to 4 with the improvement provided .
• 2 "spike plates are preferably used, such as those shown in FIGS. 7 and 8, which are folded into two parts 10 and 11 so as to form a right angle 9.
• the shearing force is distributed over a larger slab width
• These plates have a central zone without a point, so as to prevent points from being driven into the beams too close to the upper surface beam, which could cause breakage at the upper end of the beam.
• the holder commissioned tests which showed that the two materials wood and concrete work together.
• a lightweight concrete T-section beam of 1600 kg / m 3 was made , the upper part of which is a slab 0.7 m wide by 0.14 m thick and a lower part consisting of a wooden beam 0.21 m high by 0.11 m wide.
• the wooden beam being embedded in the concrete over a height of 5 cm.

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

Applications Claiming Priority (3)

Publications (1)

Family

ID=4257549

Family Applications (1)

Country Status (4)

Families Citing this family (19)

Family Cites Families (12)

• 1992
  • 1992-11-14 CH CH351092A patent/CH687397A5/fr not_active IP Right Cessation
• 1993
  • 1993-11-12 WO PCT/CH1993/000256 patent/WO1994011589A1/fr not_active Application Discontinuation
  • 1993-11-12 EP EP93924484A patent/EP0625233A1/de not_active Withdrawn
  • 1993-11-12 AU AU54160/94A patent/AU5416094A/en not_active Abandoned

Non-Patent Citations (1)

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