ES2238124B1 - IMPROVEMENTS INTRODUCED IN THE MAIN PATENT N. P-200000503/9, BY: UNIDIRECTIONAL FORGING WITH PREFABRICATED PANELS OF REINFORCED CONCRETE, AND MOLD FOR MANUFACTURE OF THE PANELS. - Google Patents

Abstract

Unidirectional slab with precast reinforced concrete panels. The unidirectional slab is of the type constituted by prefabricated tubular panels (1) of reinforced concrete with longitudinal ribs (4) with stirrups (5) and longitudinal rods (6 and 7) embraced by them, including embedded reinforcement (11 and 12) on the horizontal faces, these prefabricated panels being coplanarly attached and finally pouring concrete (8) to give continuity to the slab. The prefabricated panels (1) have a core (3) of expanded polystyrene as thermal and acoustic insulation. According to the invention, the lateral faces of the prefabricated panels (1) have grooves or recesses in "L" (2), which in the slab determine means of penetration of the concrete, to improve the transfer of forces between adjacent panels.

Description

Improvements introduced in main patent no. P-200000503/9, by: "Unidirectional forging with precast reinforced concrete panels, and mold for manufacturing of the panels ".

Object of the invention

The present invention, as expressed in the Statement of this specification refers to improvements introduced in main patent no. P-200000503/9, by: unidirectional forging with precast reinforced concrete panels, and mold for manufacturing of the panels, said improvements being specifically located in the prefabricated reinforced concrete panels themselves with the that unidirectional building slabs are built.

Unidirectional slab is formed with these prefabricated panels when they were attached coplanarly, being able to lean or recess at its ends, hooking them with beams or walls, offering great thermal and acoustic insulation when incorporating inside an expanded polystyrene block or similar.

Background of the invention

In the main Invention Patent No. P-200000503/9, some panels were released precast reinforced concrete, or prefabricated plates, which they have tubular configuration with a polystyrene core expanded.

Longitudinal nerves form at least in the side panels, and may also have one central, or several, depending on the width of the plate or panel. Between the nerves it they have expanded polystyrene blocks that are housed in her breast.

The side walls of the plate are flat and its  cross section is trapezoidal, and has a truncation in its lower vertices.

The longitudinal nerves of the plaques or panels, are constituted by vertical stirrups at distances predetermined that link the longitudinal rods of armed.

The panels are joined on site, when making a concrete pouring that gives continuity to it.

The plates also include the corresponding partition mesh inside the compression layer built-in

It has been observed that the shape of the lateral profile of the plates can be improved to ensure the transmission of greater efforts between adjacent plates, such that the shear stress that occurs in the joint between plates, when Two adjacent bear different loads, can be supported by the board, even if that difference in loads is large (within typical values in building works).

Description of the invention

In general, to improve the transverse stress transfer, unidirectional forging with precast reinforced concrete panels, object of the invention, is carried out in the same way but endowing the panels on their side faces, of at least one longitudinal channel of section in "L" that determines that the oblique faces of the primitive isosceles trapezoidal section of the panel or plate prefabricated, present both incoming or cuts with this form of "L" or "V".

The stirrup of the nerves is not altered, and the nerve armor (vertical stirrups with rods longitudinal) are previously constructed by the system of traditional manufacturing. Advantageously these offer an outline in the form of a rectangular trapezoid with the parallel minor side located naturally in the upper or near the lower base of the panel section. In this way, the vertex of the incoming in "L" does not reach the stirrups, since it also does not require that Said cut is deep.

With this new design, when the concrete between the prefabricated plates or panels, this is introduced into the side channels and is achieved, after setting,  an optimal interlock between panels, guaranteeing continuity cross slab.

To facilitate the understanding of characteristics of the invention and forming an integral part of that Descriptive report, accompanying some sheets of plans in whose figures, with an illustrative and non-limiting nature represented the following:

Brief description of the drawings

Figure 1. It is a cross section of one of prefabricated two-rib plates or panels, with which the unidirectional slab is achieved in accordance with the invention.

Figure 2. It is a longitudinal section of it  prefabricated plate or panel of figure 1.

Figure 3. It is a cross section of a forged with plates or panels of two nerves, according to the invention.

Description of the preferred embodiment

Referring to the numbering adopted in the figures, we can see how the unidirectional slab with precast reinforced concrete panels, which the invention proposes, presents as a special feature the fact of including in the prefabricated plates or panels, such as the one referenced in general with the number 1, the starters or cuts in "L" 2 on their faces lateral, instead of being smooth as contemplated in the patent Main P-200000503/9.

The prefabricated panel or plate 1 includes a core 3 expanded polystyrene, tubular structure to facilitate thus the passage of cables or pipes of the water networks and / or sanitation.

On the sides of core 3 the vertical ribs 4 of the prefabricated plate or panel 1, which  they include stirrups 5 and longitudinal rods upper 6 and lower 7. These rods 6 and 7 protrude longitudinally of the front faces of the panel, in the example shown in the figures, although they could also be flush with the front walls.

In figure 3 where the formation of the Forged, by attaching prefabricated panels 1 to complete the surface of the floor, when the pouring of the concrete to fill the gaps formed between plates or panels 1 prefabricated adjacent, the concrete invades and penetrates the channels that define incoming 2 in "L". After setting great rigidity between panels is achieved and transfer is optimized of efforts between them, since the filling material 8 presents the triangular nerves 9 locked in the channels that determine the entrees 2 in "L". This embodiment example includes 10 rods of assembly for negative moments.

References 11 and 12 designate the armor or distribution meshes that remain embedded within the plate or prefabricated panel

Claims (1)

1. Improvements introduced in the main patent nº P-200000503/9 by: "Unidirectional slab with prefabricated reinforced concrete panels, and mold for the manufacture of the panels", being the slab of the type formed by tubular reinforced concrete panels of longitudinal rods, and stirrups, which are coplanarly attached and are crimped, by means of support or recesses at their ends with beams or walls, the panels having an expanded or similar polystyrene core that acts as a thermal and acoustic insulator, characterized in that the side walls of the cross section of the prefabricated panels (1), they are provided with a cut or recess in "L" (2) that does not affect the stirrups (5) of the longitudinal ribs (4) of said prefabricated panels (1), determining that the filling concrete (8) poured between adjacent prefabricated panels (1), to give continuity to the slab, incorporates two triangular ribs (9) housed in the ent "L" rants (2) of said prefabricated panels (1), optimizing load transfer between prefabricated panels (1).