EP1614823B1

EP1614823B1 - Reinforcement form, in particular for making cross-ribbed reinforced floors, and related floor

Info

Publication number: EP1614823B1
Application number: EP05425198A
Authority: EP
Inventors: Nicolo Sicilferro Torrenovese S.r.l. Cancelliere; Rosario Scurria
Original assignee: Sicilferro Torrenovese Srl
Current assignee: Sicilferro Torrenovese Srl
Priority date: 2004-07-09
Filing date: 2005-04-06
Publication date: 2008-01-23
Anticipated expiration: 2025-04-06
Also published as: DE602005004450D1; EP1614823A2; EP1614823A3; ATE384836T1; ITRM20040340A1; DE602005004450T2; PL1614823T3; ES2299988T3

Abstract

The present invention concerns a reinforcement form, in particular for making crisscross reinforcement floors, comprising a base slab (1) reinforced by one or more shaped perforated metallic guide beams (5), onto which one or more polyhedral blocks (2) are integrally coupled, the form being characterised in that said one or more polyhedral blocks (2) are spaced from each other so as to let an array of passages (3, 4) free. The present invention further concerns a crisscross reinforcement floor built through such reinforcement form.

Description

The present invention concerns a reinforcement form, in particular for making crisscross reinforcement floors, as well as for making walls or other manufactured articles for erecting buildings, that allows large spans to be covered with very reduced thicknesses and with not much considerable deflections (i.e. displacements orthogonal to the form plane with respect to the undeformed static configuration, due to the loads acting thereon), and that is simple to apply, efficient, light, reliable and inexpensive.
The present invention concerns a crisscross reinforcement floor built through such form.
It is known that for erecting buildings it is necessary to make floors apt to sustain even significant loads.
To this end, wood and masonry floors according to traditional techniques are replaced, most of all in case of large-size buildings wherein loads acting on the floors may be very heavy, with floors provided with concrete, such as floors made of concrete and tile or concrete and wood, and floors made of reinforced concrete.
EP-A-0 617 180 describes a reinforcement form comprising a base slab reinforced by one or more metallic guide beams, onto which base slab longitudinally extending box elements are secured, such box elements being formed by structures made of sheets of material having low weight.
US-A-1 338 567 describes a form comprising a plurality of shaped base slabs which are not reinforced, onto each one of which slabs one metallic box, open at the bottom, is centrally set, leaving a perimeter space around the side walls of the box.
US-A-4 037 375 describes a reinforcement form comprising a plurality of base slabs reinforced by one or more shaped perforated metallic guide beams, which base slabs are prefabricated panels on which a core of void-producing duct forms is mounted, such duct forms extending along one direction only.
However, such floors also present some drawbacks.
First of all, they are extremely heavy, being consequently difficult to apply and requiring sustaining structures of adequate size, being hence bulky and expensive and which reduce spans which may be covered without pillars.
Moreover, reinforced concrete floors presently available on the market are provided with reinforcing rods arranged in parallel to a sole direction. This makes structures constituting the floor, such as reinforcement forms, particularly complex, in the sense that their thickness has to be high and the reinforcing rods have to be considerable, being in any case not capable to exceed a rather limited maximum threshold for the spans which may be covered without pillars.
In this context, it is included the solution proposed according to the present invention, allowing all the aforementioned drawbacks to be solved.
It is therefore an object of the present invention to provide a structure, in particular, for making floors, as well as for making walls or other manufactured articles for erecting buildings, that allows large spans to be covered with very reduced thicknesses and with not much significant deflections (i.e. displacements orthogonal to the form plane with respect to the undeformed static configuration, due to the loads acting thereon), and that is efficient, light, and reliable.
It is a further object of the present invention to provide such a structure that is simple and inexpensive to make and to install.
It is therefore specific subject matter of the present invention a reinforcement form as defined in independent claim 1.
Other embodiments of the reinforcement form according to the invention are defined in dependent claims 2-17.
It is further specific subject matter of the present invention a reinforced floor as defined in independent claim 18.
Other embodiments of the reinforcement floor according to the invention are defined in dependent claims 19-21.
The present invention will now be described, by way of illustration and not by way of limitation, according to its preferred embodiment, by particularly referring to the Figures of the enclosed drawings, in which:

Figure 1 shows a perspective view of a part of a preferred embodiment of the reinforcement form according to the invention;
Figure 2 shows a top plan view of the part of the reinforcement form of Figure 1;
Figure 3 shows a perspective view, including hidden elements, of the reinforcement form of Figure 1;
Figure 4 shows a perspective view, including hidden elements, of a detail of Figure 3;
Figure 5a shows a shaped perforated metallic guide beam of the reinforcement form of Figure 3;
Figure 5b shows the profile of the shaped perforated metallic guide beam of Figure 5a;
Figure 6 shows a perspective view, including hidden elements, of a preferred embodiment of the reinforced floor according to the invention;
Figure 7 shows a top plan view of the reinforced floor of Figure 6; and
Figure 8 shows section A-A of the reinforced floor of Figure 7.

In the Figures, alike elements are indicated by the same reference numbers.
With reference to Figures 1 and 2, it may be observed that the reinforcement form according to the invention comprises a base slab 1 onto which a plurality of blocks 2, having preferably square base, is integrally coupled, which are spaced from each other so as to let a grid of passages 3 and 4 free, orthogonal to each other, wherein the reinforcement section of a reinforced concrete floor, built with the reinforcement form, as it will be better illustrated in the following, is housed.
Preferably, the base slab 1 and the blocks 2 may be made of extruded polystyrene and/or wood and/or metal. Still more preferably, the base slab 1 and the blocks 2 are made of the same material.
With reference to Figure 3 and, in greater detail, to Figure 4, it may be observed that the base slab 1 is reinforced by a plurality of shaped perforated metallic, preferably zinc plated, guide beams 5. As shown in greater detail in Figure 5a (wherein the holes of the guide beam 5 are not shown), such metallic guide beams 5 are preferably "C"-shaped with preferably "Ω"-shaped upper wing 6, as shown by the profile of Figure 5b. As shown in Figure 4, the upper wing 6 projects from the base slab 1 so that a block 2 may be hitched to it.
As said, the shaped guide beams 5 are preferably perforated, so as to lighten the weight of the form and to better anchor them to the base slab 1.
As said, the reinforcement form according to the invention may be used for making crisscross reinforcement floors.
In particular, the upper wing 6 of the shaped perforated guide beams 5 that projects from the base slab 1 in correspondence with passages 3 and 4 may be used as reinforcing rod cover for correctly positioning the reinforcing rods along two directions orthogonal to each other, parallel to the passages 3 and 4 of the mentioned grid.
In particular, with reference to Figures 6-8 (wherein the shaped perforated guide beams 5 are not shown), it may be observed that:

along each passage, 3 or 4, four reinforcing rods are preferably positioned, respectively 7 or 8 (of which two reinforcing lower rods 8 are laid on the shaped perforated guide beams 5, used as reinforcing rod covers); and
three reinforcing rods 9 parallel to the passages 3 and three reinforcing rods 10 parallel to the passages 4 are preferably positioned over each square block 2, reinforcing rods 9 and 10 preferably having diameter lower than that of reinforcing rods 7 and 8.

As better shown in Figure 8 (showing section A-A of Figure 7), the reinforced floor is completed by a concrete cap 11, that is reinforced by reinforcing rods 7, 8, 9, and 10, which incorporates blocks 2 and is integrally coupled to the base slab 1.
It is evident to those skilled in the art that the number and diameter of the reinforcing rods placed within the reinforced floor of Figures 6-8 may change, depending on the span to cover and on the load to sustain.
Other embodiments of the reinforcement form according to the invention may comprise perforated guide beams shaped according a profile different from that shown in Figure 5b, e.g. a "Z"-profile, possibly combined with a "C"-profile. In particular, some embodiments may comprise perforated guide beams having a profile comprising at least one duct within which a respective reinforcing rod may be housed (parallel to the passages 4, according to the configuration of Figures 2 and 3).
Furthermore, other embodiments may also comprise perforated guide beams emerging from the base slab 1 by such an height to leave a higher profile portion uncovered along the passages 3 orthogonal to the same guide beams. In this case, some holes of the guide beams may be used as guides for the reinforcing rods 7 placed along the same passages 3.
Shapes and size of the various component elements of the reinforcement form and of the related reinforced floor (such as the slab 1, the blocks 2, the grid passages 3 and 4, the metallic guide beams 5, and the reinforcing rods 7, 8, 9, and 10) are variable depending on the needs of load and overload of the structures to make.
The advantages offered by the reinforcement form and by the reinforced floor according to the invention are considerable.
First of all, the metallic guide beams 5 with which the form is reinforced ensures that it is self-supporting.
Moreover, the reinforcement form and the related reinforced floor, conceived as a reticle of reinforced concrete structures, allow large spans to be covered with very reduced thicknesses and with not much considerable deflections.
Furthermore, the reinforcement form allows building related reinforced floors reducing or eliminating assembling problems during the phase of installation, such as size and complexity of steel structures, propping, and shaping reinforced concrete structures.
The present invention has been described, by way of illustration and not by way of limitation, according its preferred embodiment, but it should be understood that those skilled in the art can make variations and/or changes, without so departing from the related scope of protection, as defined by the enclosed claims.

Claims

Reinforcement form, in particular for making crisscross reinforcement floors, comprising a base slab (1) reinforced by one or more metallic guide beams (5), the form being characterised in that said one or more metallic guide beams are shaped perforated metallic guide beams (5), and in that a plurality of polyhedral blocks (2) are integrally coupled onto said base slab (1), said polyhedral blocks (2) being spaced from each other so as to let a grid of passages (3, 4) free.
Form according to claim 1, characterised in that said grid has a configuration of orthogonal passages (3, 4).
Form according to claim 1 or 2, characterised in that said polyhedral blocks (2) are substantially identical to each other.
Form according to any one of the preceding claims, characterised in that at least one of said polyhedral blocks (2) substantially has a regular polygon as base.
Form according to any one of claims 1-4, characterised in that at least one of said polyhedral blocks (2) substantially has a rectangle as base.
Form according to claim 4, characterised in that at least one of said polyhedral blocks (2) substantially has a square as base.
Form according to any one of the preceding claims, characterised in that said one or more shaped perforated metallic guide beams (5) are identical to each other.
Form according to any one of the preceding claims, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) has a profile at least partially "C"-shaped.
Form according to any one of the preceding claims, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) has a profile at least partially "Z"-shaped.
Form according to any one of the preceding claims, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) is partially projecting from the base slab (1).
Form according to claim 10, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) comprises at least one upper wing (6) projecting from the base slab (1), so that at least one of said polyhedral blocks (2) is apt to be hitched to said at least one upper wing (6).
Form according to claim 11, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) comprises at least one upper wing (6) having profile at least partially "Ω"-shaped.
Form according to any one of claims 10 to 12, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) is shaped according to a profile comprising at least one duct.
Form according to any one of the preceding claims, characterised in that the base slab (1) is made of extruded polystyrene and/or wood and/or metal.
Form according to any one of the preceding claims, characterised in that each one of said polyhedral blocks (2) is made of extruded polystyrene and/or wood and/or metal.
Form according to any one of the preceding claims, characterised in that the base slab (1) and said polyhedral blocks (2) are made of the same material.
Form according to any one of the preceding claims, characterised in that at least one of said one or more shaped perforated metallic guide beams (5) is zinc plated.
Reinforced floor, comprising a reinforced concrete cap (11), including one or more reinforcing rods (7, 8, 9, 10), characterised in that it is a crisscross reinforcement floor and it comprises a reinforcement form according to any one of the preceding claims 1-17, in the grid of passages (3, 4) of which said one or more reinforcing rods (7, 8, 9, 10) are placed, the reinforced concrete cap (11) at least partially incorporating said plurality of polyhedral blocks (2) and being integrally coupled to the base slab (1).
Reinforced floor according to claim 18, characterised in that said reinforcement form is that according to any one of claims 10-12, and in that the portion of said at least one shaped perforated metallic guide beam (5) projecting from the base slab (1) is apt to operate as reinforcing rod cover for correctly positioning at least one portion of said one or more reinforcing rods (7, 8, 9, 10).
Reinforced floor according to claim 19, characterised in that said reinforcement form is that according to claim 13, and in that at least one of said one or more reinforcing rods (7, 8, 9, 10) is housed in said at least one duct of the profile of said at least one shaped perforated metallic guide beam (5).
Reinforced floor according to claim 19 or 20, characterised in that the portion of said at least one shaped perforated metallic guide beam (5) projecting from the base slab (1) comprises at least one hole apt to operate as guide for correctly positioning at least one portion of said one or more reinforcing rods (7, 8, 9, 10).