ITMC20090250A1 - FRAME DOOR STATION SPACER FOR ARMORED CEMENT KNOTS. - Google Patents

Description

â € œSTRAP FRAME SPACER FOR REINFORCED CONCRETE KNOTSâ €.

TEXT OF THE DESCRIPTION

The present patent application for industrial invention relates to a spacer frame stirrup for reinforced concrete nodes.

The invention in question was conceived in order to simplify and optimize, in the context of construction sites, the operations necessary for the installation, by means of reinforcement and formwork, of the structural nodes in reinforced concrete, intended as meeting points of pillars and beams.

In such cases it is in fact necessary to comply with the regulations that require the stirruping of each of the aforementioned structural nodes.

In the current technique, similar stirrups are made, with a substantially artisanal logic, through the use of suitably shaped metal rods and joined together by means of difficult and uncomfortable ligatures.

Also for this reason the operations necessary to create stirrups of this kind turn out to be long, complex and above all unable to ensure the success of the operation with the necessary consistency.

In fact, the verifications carried out afterwards often show that the actual brackets, as well as the vertical and horizontal rods that converge at a structural node, do not respect the distances provided in the executive drawings between the stretched and compressed reinforcement. o they do not have the minimum concrete cover required by law.

Starting from this critical frame of reference, it was then decided to create the new equipment in question which is also endowed with a â € œbivalentâ € functionality.

On the one hand, in fact, it lends itself to fulfilling the typical structural function of each stirrup with effectiveness no less than that of traditional stirrups in ribbed metal rod, but with an enormously superior simplicity and precision of installation.

On the other hand, it turns out to be able to act also as a reference spacer element, particularly useful for the quick and correct installation of the metal rods that converge vertically and horizontally towards the same structural node.

These brilliant results have been obtained by giving the stirrup in question a modular structure consisting of some â € œprefabricatedâ € components that can be easily and quickly assembled in order to give life to a parallelepiped bearing structure, essentially â € œcageâ €.

Moreover, on these components, respective series, regularly spaced, of circular holes are made to be used, precisely, to insert the ends of the aforementioned vertical and horizontal metal rods and therefore able to allow the aforementioned parallelepiped bearing structure to act also as a â € œspacer frameâ €.

In fact, thanks to the safe reference offered by the appropriate holes in the stirrup in question, the personnel assigned to laying these rods are therefore in a position to proceed with their work with the utmost speed and safety, without being forced, as in the past. , to carry out frequent and accurate measurements to establish the correct center distance between the various rods and without running the risk of making a reinforcement that does not fully comply with the designerâ € ™ s forecasts.

For greater explanatory clarity, the description of the invention continues with reference to the attached drawing tables, having only illustrative and certainly not limiting value, in which:

Figures 1, 2 and 3 show, with respective axonometric representations, the three modular components adopted in a first constructive version of the stirrup in question;

Figure 1A shows, with a plan view, an alternative version of the component of Figure 1;

- figure 4 shows, with an axonometric representation, a section of the stirrup in question obtained thanks to the assembly of a suitable number of the aforementioned modular components;

- figure 5 is similar to the previous one, but shows the same stirrup implemented with an additional accessory component;

Figure 6 shows, with a plan view, an alternative vertical element to that shown in Figure 2;

- figure 7 is an axonometric representation of a second constructive version of the stirrup in question;

- figure 8 is similar to the previous one, but serves to show the modalities of cooperation of this same stirrup with the metal rods destined to constitute the reinforcement of the concrete; - figure 9 is an axonometric representation showing the two basic components of the stirrup shown in figure 6.

By virtue of the present inventive idea, the stirrup in question adopts a parallelepiped cage structure with a substantially square plan (G) formed:

- by a superimposed series of identical frame elements or brackets (1), arranged horizontally and equipped with respective perimeter series, regularly spaced, of holes (1a) into which to insert, for the entire height of the aforementioned parallelepiped cage structure (G), respective metal rods with vertical axis (TV)

- a plurality of vertical elements (2, 20) intended to support and connect, at regular intervals of space, the aforementioned horizontal brackets (1)

- from several opposing series of horizontal axis holes (30c, 31c), obtained on the sides of the same parallelepiped cage structure (G) at staggered heights, within which to insert respective series of metal rods with horizontal axis (TO, TOâ € ™ ).

With reference to Figures 1 to 4, the stirrup according to the invention is constituted by virtue of the cooperation of three metal components (1, 2, 3), which cooperate with each other.

With particular reference to Figure 1, the first of these components consists of a bracket (1) intended to perform, within the respective structural node, the typical function of hooping, replacing the aforementioned traditional brackets made by hand with ribbed rod.

In practice this bracket (1) assumes the structure of a square (or rectangular) frame which is crossed, for its entire development, by two regularly alternating series of circular holes (1a, 1b); it being provided in particular that the holes (1a) belonging to the first series have a larger section than that adopted by the holes (1b) belonging to the second series.

With particular reference to Figure 2, the second component of the stirrup according to the invention consists of a cylindrical rod (2) equipped with a section compatible with that of the holes (1b) which, within the aforementioned bracket (1 ), belong to the aforementioned second series with a smaller section.

With particular reference to Figure 3, the third component finally consists of a mask (3) which adopts a substantially parallelepiped box-like structure, formed by two opposing pairs of vertical sides (30, 31) differently profiled, and which occupies a surface exactly corresponding to that bounded by the internal perimeter of the bracket (1).

Each of the banks (30) belonging to the first pair adopts a substantially â € œUâ € profile, as it is formed by a horizontal band (30a) which ends at the ends with two identical thin appendages (30b), like horns, and which is provided with a regularly spaced series of circular holes (30c).

Each of the banks (31) belonging to the second pair, on the other hand, adopts a substantially â € œIâ € profile, within which it is possible to identify a central horizontal band (31a) which ends on both sides with identical appendages (31b), facing opposite sides, which vaguely evoke the profile of a fish's tail and which is also equipped with a regularly spaced series of circular holes (31c) having the same section as those (30c) provided on the aforementioned first banks (30).

It should also be noted that in the points of mutual contact the two aforementioned pairs of sides (30, 31) have the same height and also that the two aforementioned bands (31a) belonging to the sides (31) of the second pair are arranged at a higher level with respect to the bands (30a) belonging to the banks (30) of the first pair; this implies that the series of holes (30c) belonging to the first pair of sides (30) are arranged at a lower level than that occupied by the holes (31c) belonging to the second pair of sides (31).

Once the structure of the aforementioned components (1, 2, 3) has been clarified, we proceed, with particular reference to figure 4, to illustrate the methods of their cooperation.

In particular, this figure shows a version of the stirrup according to the invention which adopts six superimposed examples of the stirrup (1).

Within this structure, each piece of bracket (1) is joined to the one immediately below it by means of eight pieces of the shaft (2), it being provided, in particular, that each of these rods (2) is installed, with its upper end, within the corresponding hole (1b) belonging to the overlying bracket (1) and, with its lower end, within the corresponding hole (1b) belonging to the underlying bracket (1).

In the same version of figure 4 it is also foreseen that the stirrup in question is accompanied by two examples of the aforementioned mask (3), of which the first projects downwards from the upper bracket (1) of the â € œpilaâ € and the second projects upwards from the lower bracket (1) of the pile itself; it is also foreseen that the second of these two examples of the mask (3) is rotated by 90 ° with respect to the first and is placed in an inverted position (that is to say â € œupside downâ €).

More precisely, it can be said that the two examples of the mask (3) are centered and fixed with respect to the relative brackets (1), in such a way that the upper extremities of the `` top '' mask (3) are arranged flush with the inner perimeter edge of the overlying bracket (1) and that, similarly, the lower ends of the inverted `` base '' mask (3) are aligned flush with the inner perimeter edge of the underlying bracket (1).

It should also be said that each of the aforementioned masks (3) is also contained and fixed between the perimeter series of vertical rods (2) which connects the bracket (1) which directly supports the same mask (3) with the similar bracket immediately adjacent.

The aforementioned figure 4 also allows us to understand the ways in which the stirrup according to the invention is also capable of fulfilling the function of favoring the guided installation of the metal rods which converge horizontally and vertically towards the same structural node.

In particular, the vertical axis rods (TV) must be inserted into the shelving in question by exploiting the presence, on the various overlapping brackets (1), of the respective perimeter series of holes (1a), suitably equipped with a section compatible with that of the rod types used in construction.

Each of the aforementioned masks (3) allows instead to place, on two different heights, respective series of horizontal-axis rods (TO, TOâ € ™), rotated by 90 ° with respect to each other.

A first series of these latter rods (TO) is in fact destined to slip into the two opposing series of holes (30c) of the respective template (3), while a second series of these same horizontal axis rods (TOâ € ™) is destined to slip into the two further opposing series of holes (31c) of the same mask (3).

It goes without saying that, also in this case, the aforementioned holes (30c, 31c) of each mask (3) have a section compatible with that of the types of rods used in construction.

With particular reference to Figure 1A, it should be noted that each of the aforementioned brackets could also bear a different profile from that shown in Figure 1.

In the version shown in this figure, in fact, the bracket in question adopts an external perimeter edge that is ribbed and folded at 90 ° (10) and is stiffened centrally by a cross structure (11).

Furthermore, nothing prevents the bracket in question from being made also according to further alternative methods, perhaps giving them three-dimensional shapes (cubic, cylindrical, prismatic) on the sole condition of bearing the aforementioned regular series of holes (1a, 1b) shown in the main version of the figure. 1.

Likewise, we reserve the freedom to produce this plate for stamping, punching, laser cutting, plasma cutting or any other useful technology.

Similarly to what is stated with reference to the bracket (1), it should be noted that the mask (3) can also be made according to alternative construction solutions to that shown in figure 3, on the sole condition that the two aforementioned series are in any case opposite each other, and staggered in height, of circular holes (30c, 31c).

In relation to the manufacturing methods of this mask (3), it must be said that it can be made â € œon planeâ €, indifferently by molding, punching, laser cutting, plasma cutting, and then be folded and fixed (or rather: closed in on itself) by welding or other advantageous connection techniques.

As regards the solutions to be adopted for the mutual stable fixing of the three components (1, 2, 3) of the stirrup according to the invention, it is declared that there are no particular preclusions or preferences, in the sense that the present invention is compatible with the use of any means of connection suitable for pursuing the intended purpose.

Figure 5 refers to a version of the stirrup in question that uses an additional component (4), not shown in the previous figures, whose use must be envisaged in the case of creating, within a structural node , the cooperation of a lowered beam and a column perpendicular to it.

Well, for such a need, the use of several specimens of a shaped collar (4) with perimeter sides arranged in cut is envisaged, also endowed with such an amplitude as to circumscribe the parallelepiped structure â € œa cageâ € previously made through the aforementioned components (1, 2, 3).

Each of these collars (4) has a cross profile formed by four identical arms (40), two by two opposite each other, which delimit a large central square surface.

In particular, each of these arms has a substantially â € œCâ € profile, within which two short symmetrically opposed wings (40a) are provided, connected at the extremity by means of a current (40b).

For its part, the aforementioned central surface of this collar (4) is able to contain exactly one of the aforementioned brackets (1).

In this sense, figure 5 makes it possible to verify how each specimen of this collar (4) must be `` threaded '' exactly on the outside of the parallelepiped structure `` main '' of the stirrup in question and fixed, halfway up, to one of the brackets (1) that compose it.

In this way, the aforementioned arms (40) are arranged, on the four sides, in an outermost arrangement with respect to the same parallelepiped "main" structure of the stirrup in question.

Well, even such a collar (4) is intended to facilitate the guided installation of the horizontal metal rods that converge towards the respective node.

In this regard, each example of this collar (4) has in fact a series of first holes (4a) made in correspondence with its longitudinal sections and a series of second holes (4b) made, at a higher level, in correspondence with its transverse sections. .

The aforementioned figure 5, which shows the installation of two examples of this collar (4), allows to verify how each of them is fixed in correspondence with one of the brackets (1) not associated with a respective mask (3).

With reference to figures 6 to 9, it is reiterated that the parallelepiped cage structure (G) of the stirrup in question lends itself to being made, even in the presence of the same functional effectiveness, also by virtue of a second constructive solution, in the ™ area in which only two components cooperate.

The first of these components is constituted by the same bracket (1) previously described, which on the occasion, however, renounces to adopt the series of holes (1b) with a smaller section.

The second of these components is instead a vertical element (20), which brings together the functions that, in the first version of the stirrup in question, were performed separately from the rods (2) and from the masks (3).

In particular, figure 6 shows how the aforementioned vertical element in practice assumes the structure of a metal plate (20) which bears, in correspondence with one of its transverse edges, a symmetrically opposed pair of thin appendages (20a), like € ™ of horns, and which has, towards the extremities, two respective series of holes with horizontal axis (30c, 31c).

In a preferred embodiment this plate (20) has a large central window partially occupied by a cross stiffening profile (20b).

Figure 9 shows how four specimens of this plate (20) must be welded â € œsquareâ € to form the â € œcolumnâ € (SC) structure of the stirrup under construction; in particular, this is the structure (SC) along which more specimens of the aforementioned bracket (1) are inserted and welded, as shown also in the previous figure 7.

The aforementioned figure 9 also makes it possible to verify that the aforementioned four specimens of the plate (20) are mounted, two by two, in inverted arrangements, in the sense that a first opposing pair of such plates (20) is mounted with the respective appendages (20a) facing upwards and that a second opposing pair of them is mounted with the same appendages (20a) facing downwards.

This expedient serves to obtain, at each of the extremities of the aforementioned â € œcolumnâ € (SC) structure, the presence of two opposite series of horizontal axis holes (30c, 31c) staggered in height, intended to accommodate, on two different heights, respective series of rods with vertical axis (TO, TOâ € ™), as expressly shown in figure 8.

It should also be noted that even in the presence of this second version of the stirrup according to the invention, the stable fixing of the various specimens of its structural components (1, 20) can be made with any suitable technology, without this in any way affecting the Inventive essence underlying the present invention.

The stirrup in question is also suitable, in both versions described above, also to be used in the presence of beams and pillars that constitute a node of the roof, providing, in this case, rods with improved adherence, bent according to the inclination of the roof and pinned on the supporting structure â € œcageâ € of the bracket itself.

In this hypothesis (not shown in the attached figures) it is possible that one or more of the brackets (1) that make up this load-bearing structure are inclined with respect to the others and therefore not parallel with them.

This expedient serves to perfectly copy the inclination of the roof and also allows for the distribution of the rods to equally advantageously arm the sweat.

Claims (6)

CLAIMS 1) Spacer frame stirrup for reinforced concrete nodes characterized by the fact of adopting a parallelepiped metal structure (G), substantially cage-like, comprising: - a superimposed series of identical frame brackets (1), substantially square, arranged in order horizontal or sub-horizontal, each crossed by a perimeter series of circular holes (1a) designed to receive, for the entire height of the aforementioned parallelepiped cage structure (G), respective metal rods with vertical axis (TV) - a plurality of vertical elements (2, 20) designed to support and connect, at regular intervals of space, the aforementioned brackets (1) - plus symmetrically opposed series of circular holes with horizontal axis (30c, 31c), obtained at staggered heights on the sides of the same parallelepiped cage structure (G), suitable for receiving respective series of metal rods with horizontal axis (TO, TOâ € ™). 2) Bracket according to claim 1, characterized by the fact: - that each of its aforementioned brackets (1) has a second series of circular holes (1b) around the perimeter, in addition to the aforementioned first series of holes (1a) - that each of the aforementioned vertical elements consists of a cylindrical rod (2) equipped with a section compatible with that of the holes (1b) of the second series provided on the aforementioned brackets (1) and therefore capable of being inserted and fixed within the holes (1b) vertically aligned by two overlapping brackets (1) - that the aforementioned series of holes with horizontal axis (30c, 31c), staggered in height, are obtained in correspondence with the two opposing pairs of vertical sides (30, 31) belonging to a parallelepiped mask (3) able to be fixed exactly in correspondence of the internal perimeter of one of the aforementioned brackets (1), in a circumscribed position by a perimeter series of the aforementioned vertical rods (2) suitable for connecting the superimposed brackets (1). 3) Stirrup according to claim 2, characterized in that, in the context of the aforementioned mask (3), the vertical sides (30) belonging to the first opposing pair adopt a substantially â € œUâ € profile, as formed by a respective horizontal band (30a) bearing the aforementioned holes (30c) and ending at the ends with two identical thin appendages (30b) like horns, and that the vertical sides (31) belonging to the second opposing pair adopt a substantially â € œIâ € profile, as it is formed by a respective central horizontal band (31a) bearing the aforementioned holes (31c) and ending on both sides with identical appendages (31b), facing opposite sides, substantially fishtail; it being provided that the two aforementioned pairs of sides (30, 31) adopt the same height at the points of mutual contact and that the horizontal bands (31a) belonging to the second pair of sides (31) are arranged at a different height than the one occupied of the horizontal bands (30a) belonging to the first pair of sides (30). 4) Bracket according to claim 1, characterized by the fact: - that each of the aforementioned vertical elements (20) consists of a substantially rectangular plate (20) which, at one of its transverse edges, bears a symmetrically opposed pair of thin appendages (20a) like horns - that the aforementioned series of circular holes (30c, 31c) are obtained on this same plate (20), in a slightly more internal position than its transverse edges - that each of these plates (2) forms, in cooperation with three identical specimens, a column structure (SC), within which the two opposite pairs of these plates (2) assume an inverse orientation, in the sense ̈ that the first pair of such plates (2) is mounted with its appendages (20a) facing upwards, while the second pair of such plates (2) is mounted with the respective appendages (20a) facing upwards. the bass. 5) Stirrup according to one or more of the preceding claims, characterized in that each of the aforementioned frame brackets (1) internally carries a cross stiffening structure (11), as well as a ribbed and 90 ° folded perimeter edge (10 ). 6) Bracket according to one or more of the preceding claims, characterized in that it comprises a further component consisting of a shaped collar (4), with perimeter edges arranged for cutting, which bears a cross profile within which four identical arms (40), equipped with a substantially â € œCâ € profile formed by two short symmetrically opposed wings (40a) and by a connecting current (40b), delimit a large central substantially square surface suitable to accommodate exactly the ™ aforesaid parallelepiped cage structure (G) at the point of application of one of the aforesaid brackets (1); it being provided that this collar (4) bears a series of first circular holes (4a) made in correspondence with its longitudinal portions and a series of second circular holes (4b) made, at a different height, at its transverse portions.