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
  • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
  • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
  • E04B5/261—Monolithic filling members
  • E04B5/265—Monolithic filling members with one or more hollow cores
• • 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
  • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
  • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
  • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor

Definitions

• the invention relates to the general technical field of construction and more particularly that of the spaces used to form the formwork of the concrete slab of a joist floor.
• Previous state Interjoists designate intermediate elements in the beams, coming to rest on the latter without the intervention of an external device and having an upper face, a lower face and two opposite end edges,
• the upper face is extended by two edges of support which extend parallel to each other, and between the two end edges, to each form a support rebate facing the lower face and suitable for nesting on a fixed support, in particular on a heel of a beam .
• the interjoists must have high specifications and performances, both mechanical and thermal, to be approved by approved organizations.
• -A body provided with longitudinal channels, bordered by two lateral faces;
• -Two transverse ribs comprising supporting undersides on the beams, said ribs having a small longitudinal dimension compared to that of the spacer and being separated from one another by a zone, lateral faces located ( s) set back from said ribs and having a longitudinal dimension much greater than that of the latter.
• An underside of the ribs is higher than that of the underside of the body of the beams in order to allow the lower part of the latter to extend at the level of the heels of the joists.
• an arc-shaped spacer comprising a profiled plate based on a mineral matrix and having two lateral wings which start from a median region of a plate while being inclined towards one direction , called lower, up to the free ends, the free ends having shoulders intended to rest on upper faces of flanges of neighboring beams, and intended to come to bear on the lateral faces of the flanges to obtain the given spacing between the joists
• said interjoist is characterized in that the angle of external inclination between the middle region and each of the wings is between 35° and 75°.
• an arc-shaped interjoist comprising: side walls, walls inclined relative to said side walls, vertical cores and an arc-shaped wall, however the arc-shaped wall is not tangential to the upper wall of the interjoist which does not make the interjoist usable in the event of breakage or rupture.
• spoiler is made up of a fillet between the side walls and the lower wall.
• An object of this invention is to provide a construction suitable for use in less lightweight concrete floors while ensuring the safety of people during traffic on the spaces and then the implementation of the concrete.
• the present invention aims to resolve the problems of the state of the art by the following effects: - Improve the resistance to rupture of the interjoists with respect to a point load.
• the present invention proposes a formwork spacer intended to be placed between two parallel beams for the production of a concrete floor.
• a formwork spacer intended to be placed between two parallel beams for the production of a concrete floor.
• These beams are usually in the shape of an upside down T, also called heel, and are made of prestressed or reinforced concrete.
• the space between the beams is filled by formwork spacers arranged one after the other between two adjacent beams.
• Said interjo subject of the present invention characterized in that it comprises:
• transverse core (5) in the shape of an arch or vault and extending between the interior faces of the walls (7) and (7') and perpendicular to the lateral faces (19) and (20) and whose upper exterior face convex or the extrados (22) and tangent with the lower surface of the wall (2).
• this tongue is substantially flat and preferably extends over at least a quarter of the length of the spacer.
• the technical effect provided by the long piece (6) is that it makes it possible to increase the support surface between the two halves of the spacer in the event of breakage, in fact the risk of breakage is more present in the between the axes of the beams and by applying the theory of the vaults the thrust N is transmitted from the first half of the interjoists towards the 2nd half of the interjoists until the support of the interjoists (1) on the beam (10).
• the horizontal force N is subsequently transmitted in Hp through the arch and the weight is transmitted to the support in Vp. (fig 10)
• the first half of the interjoist 1 is subjected to: an action N (the horizontal thrust), p (its weight) and R (the reaction to the surface S1 of the crack of the second half of the interjoist on the first half of the interjoist (normal and tangential). Therefore the increase in the surface S1 (the most fragile of the interjoist) implies the reduction of its stresses on the crack surfaces,
• FIG. 1 is a perspective view of the spacer (1) according to a preferred embodiment of the present invention.
• FIG. 2 is a sectional view of a spacer shown in fig. 1;
• FIG. 4 Sectional view of a floor comprising a multiplicity of T-shaped reinforced concrete beams (10), the interval between the webs of two neighboring beams being occupied by a spacer (1) resulting from the use of the interjoists of the embodiment of Fig. 1 of the invention showing how the present invention can be used.
• FIG. 5 is a perspective view of the spacer (18) according to a 3rd preferred embodiment of the spacer (1);
• FIG. 6 Sectional view of a floor comprising a multiplicity of T-shaped reinforced concrete beams (10), the interval between the webs of two neighboring beams being occupied by a spacer (18) resulting from the use of the interjoists of the embodiment of Fig. 5 of the invention showing the manner of routing the conduits and cables in the cells (15) of said space.
• the plasterer is obliged to leave a height h between the underside of the slab and the false ceiling which corresponds to the height of the fixing element (15) in order to work and leave space for the 'electrician. Thanks to the space under the arch, you no longer need to leave so much space
• FIG. 8 top view which shows the difference in machine productivity depending on height. In fact, a board allows you to go to 8 instead of 5 of you according to the state of the art.
• a spacer having two parallel side walls (7) and (7') connected by a core (5) perpendicular to the side planes (19) and (20), in which the connecting core is in the shape of an arch or vaulted.
• the lower or concave surface (21 ) of the arch or the arch (5) comprises a longette (6), positioned symmetrically with respect to the median plane (23) of the interjoist.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Reinforcement Elements For Buildings (AREA)
• Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=86904344

Family Applications (1)

Country Status (3)

Family Cites Families (5)

• 2022
  • 2022-06-16 MA MA57095A patent/MA57095B1/fr unknown
• 2023
  • 2023-06-12 WO PCT/MA2023/000008 patent/WO2023244099A1/fr not_active Ceased
  • 2023-06-12 EP EP23733466.9A patent/EP4551776A1/de active Pending

Also Published As

Similar Documents

Legal Events