KR20120102044A - Metal profile member to be used as a formwork assisting in the construction of metal/concrete flooring - Google Patents

Abstract

FIELD OF THE INVENTION The present invention relates to form rib-shaped metal profile members that assist in the construction of metal / concrete floorings, the longitudinal edges (2,3) forming upper and lower regions (5) and upper regions (4) connected by webs (6). And a deformable portion of the reentrant, wherein at least a portion of each web comprises a deformed portion 60 of the reentrant formed by a continuous line running parallel to the longitudinal direction of the profile member, wherein the length of the deformable portion is And longer than a portion of the web in the longitudinal direction.

Description

METAL PROFILE MEMBER TO BE USED AS A FORMWORK ASSISTING IN THE CONSTRUCTION OF METAL / CONCRETE FLOORING}

The present invention relates to metal profiles for use as participating formwork for the construction of metal / concrete flooring.

As is known, formwork used as both formwork and reinforcement is known as participating formwork. When formwork is used to make reinforced concrete flooring, it is put back into the reinforcement and contributes to the working strength of the flooring.

Numerous types of participating forms are already known. These conventional types are in the form of metal sheets that are curved to have a series of substantially parallel ribs running in the longitudinal direction. Therefore, in cross section, the metal sheet generally has a trapezoidal shape of bend.

This formwork is placed between two supports, such as a bearing wall, at its end. Concrete is then poured into the formwork in the direction of the ribs. After drying, a series of support girders are formed, which run in the longitudinal direction.

Throughout the description, the term concrete can be considered to cover all types of binders that can be used in the construction of flooring.

When in operation, the flooring causes a relative slip between the concrete and the formwork, which puts them in a force to separate them.

Ribs of the formwork provide transverse fixation.

In order to provide fixation in the longitudinal direction, this is a known method for embossing or forming a compressed shape on the rib. These shapes constitute a longitudinal anchor point between the formwork and the concrete to suppress their relative slippage. In particular, when relative slippage occurs, these patterned shapes withstand slippage by deformation.

However, known formwork has its limitations, so the width of the flooring is generally 4 meters and the maximum load the flooring can bear is approximately 250 kg / m ² .

These restrictions are not suitable these days.

It is therefore an object of the present invention to provide a metal profile of the joining formwork which makes it possible to obtain a flooring that is stronger and extendable over longer distances.

This profile therefore uses less concrete than conventional flooring for the same strength.

Another object of the present invention is to propose a metal profile to which a clamp or brace can be attached for a fastening element in a ceiling.

The present invention relates to a raised form-type ridged metal profile that constitutes a steel / concrete flooring having longitudinal corners and concave deformations that define upper and lower regions connected by a web, wherein at least a portion of each web is And a deformed part of the reentrant that is bounded by a continuous line running parallel to the longitudinal direction of the profile, the length of the deformable part of the reentrant relates to a ribbed metal profile exceeding the length of the some web in this longitudinal direction.

Preferably, the deformation extends over the entire length of the web.

The profile further comprises a deformation of at least one concave angle of at least a portion of the upper and / or lower region, the deformation being bounded by a continuous line, the length of the continuous line being greater than a portion of the upper and / or lower region. Longer.

Preferably, the deformation extends over the entire length of the upper and / or lower region.

The continuous line may be broken, symmetrical or otherwise jagged, for example.

The continuous line may also adopt the shape of a sinusoid.

In one embodiment of the profile, in the web, lower region and / or upper region, the deformations of the reentrant are provided in pairs and symmetrically.

The profile has a reinforcement in the web and / or the upper region.

The profile may have a bend in the lower region.

Advantageously, the profile has a protruding bulge that runs longitudinally in the web.

(A) flattening a sheet of metal of set thickness,

(b) bounded by continuous lines in the longitudinal direction of the metal sheet and the projections of the plane of the metal sheet are two-dimensional, symmetrical about the longitudinal centerline of the metal sheet, and at least a portion of the length of the sheet Creating a deformation of the two reentrants over,

(c) each time step (b) is carried out anew, and the step of repeating step (b) further away from the center line than the previous time of the deformation,

(d) at least the web has the deformation, and mainly relates to a method for obtaining a metal profile comprising deforming the profile to obtain parallel longitudinal ribs or half-ribs.

The method comprises an additional step in which the grooves are created during the two implementations of step (b), after which the grooves constitute the reinforcement.

The method also includes forming a longitudinal protruding bulge that is created after the implementation of step (b) in the deformation portion to be provided to the web.

Step (c) permits the creation of the deformation of the yaw angle of the web, on the upper region and / or the lower region of the rib.

The method comprises, after step (d), creating a reinforcement on the upper and / or lower regions of the rib.

The method includes creating at least one bend on the lower region of the profile before or after step (d).

The invention relates to an apparatus for producing a profile according to the invention, in which at least a pair of rollers of the tooth wheel type are mounted, each tooth upsets the metal to form a deformation of the yaw angle.

The present invention relates to a method of applying a profile according to the invention for the production of engagement-form flooring.

The present invention relates to a part-form floor obtained with a profile according to the invention wherein at least one brace bears against the projecting bulge and is disposed in the cavity of the profile.

The present invention can provide a metal profile for use as a parting form for the construction of a metal / concrete flooring.

The present invention may be better understood with reference to the accompanying drawings, in which other objects, advantages and features of the present invention may be obtained.

1 is a perspective view of a portion of a metal profile according to the invention,
FIG. 2 is a cross-sectional view of II-II of FIG. 1,
3 is a cross-section of one embodiment of a metal profile according to the present invention having a brace,
4 shows a metal sheet of a first step method according to the invention carried out,
5 shows the metal profile of the invention obtained from the sheet shown in FIG. 4 after the last step of the method according to the invention carried out,
Figure 6 shows another embodiment of a metal sheet of a first step method according to the present invention,
7 shows a profile according to the invention obtained from the sheet shown in FIG. 6 after the last step of the method according to the invention carried out;
8 shows one embodiment of a tool used to carry out the method according to the invention,
9 is a perspective view showing one embodiment of the brace.

Members common to the various drawings are denoted by the same reference numerals.

1 and 2 show the same part of the profile according to the invention.

This metal profile is ridged, which means that it has a series of substantially parallel ribs running in the longitudinal direction. 1 and 2 show one of these ribs 1.

When the profile is used to make the flooring, the concrete is poured between the ribs, and in such a way, the cavity 10 formed by the ribs leaves the concrete.

Thus, the profile has a longitudinal corner, an upper corner 2 and a lower corner 3. These corners delimit the areas known as the area between them the upper area 4 and the lower area 5.

In practice, these areas are parallel to the flooring of the metal profile forming the formwork.

These corners border the web 6 extending between the upper region 4 and the lower region 5.

In the embodiment shown in FIGS. 1 and 2, these webs run at an angle, crossing the transverse of the cavity 10, and the lower region 5 is larger than the upper region. This is what is later referred to as the stackable "open" profile. The present invention is not limited to this embodiment and may cover known profiles with "closed" profiles that are not stackable. The web may act vertically between the upper and lower regions.

The profile according to the invention is that in each web 6 a deformed portion 60 of the reentrant is created substantially in the lower region of the web. Deformation of the reentrant is understood to mean a deformation that places the sheet metal of the profile towards the inside of the cavity 10. Such deformations, in the embodiment shown, lead to the middle section of the web and are bounded by continuous lines having a crenellated shape. The general eye shown in FIG. 1 has an oblique shape, which means that the segments 62 connecting the segments 61 extending in the longitudinal direction are oblique and not perpendicular to these segments 61. Of course, other shapes can be selected for these concave deformations made in the web 6 of the profile.

In general, the lines delimiting such deformations to have a continuous shape are suitable so as to extend over at least a portion of the web and to make these lines two-dimensional in the plane of the web. This means that the deformation of the yaw angle formed in the web cannot be a simple longitudinal line, or for example a line perpendicular to this longitudinal line connecting the upper and lower regions 4, 5.

In other words, the elongated length of the line delimiting the deformation is greater than the portion of the web on which the deformation is formed.

For example, as shown in FIG. 1, the deformable portions 60 generated in the web 6 are bounded in the shape of the gun eye inside the web 6 and are laterally separated from each other by the depth of the generated deformable portions. Forms part.

In the figure, the part of the web lying on the continuous surface of the upper region 4, known as "top", is reference numeral 63, while the part of the web which is laterally spaced inwardly of the profile is 64.

These two parts are joined together by a wall 65 that is substantially parallel and substantially perpendicular to those parts 63 and 64. The depth of the deformation portion corresponds somewhat to the height of this wall, which has a continuous three-dimensional serrated shape.

1 and 2 show the top 64 of the web 6 with a continuous bulge 66 running longitudinally over the segment 61 closest to the top region 4. This bulge constitutes a protruding or protruding deformation, which means a deformation in which the sheet metal of the profile facing outward of the cavity 10 is arranged. The benefits of this bulge will be explained later in the description. This may be omitted.

Therefore, the line that borders the deformable portion 60 is formed by forming an intersection between the portion 63 and the wall 65. It is therefore two dimensional in the plane of that portion 63, here referred to as the "plane of the web".

This line can be placed at any level along the web. Preferably, however, it is not located at the top corner 2. This is to avoid this because some deformation of the profile at the top corner reduces its strength considerably.

In addition, Figures 1 and 2 show a profile with one reentrant deformation in each web. The other profile may have two, or even three, yaw angle deformations.

Such reentrant deformations can alternatively alternatively adopt an oblique asymmetric serrated shape or a straight, symmetrical or asymmetric serrated or even sinusoidal shape.

As explained in the detailed description of the method according to the invention, this continuous two-dimensional line makes it possible and when the sheet metal deforms, the metal is placed across the width of the sheet. This arrangement of the metal inhibits the thinning of the sheet at the point of deformation and thus makes it possible to cause deformation of a thickness thicker than that which can be made of known metal profiles.

In the embodiment shown in FIGS. 1 and 2, the metal profile according to the invention has deformations 50 or deformations 50, 51 and 40, 41 in the lower region 5 and in the upper region 4. . In this embodiment, the deformed portion of the yaw angle may have a slanted tooth like the deformed portion 60 provided in the web 6.

In the embodiment shown in FIG. 1, the deformations 40, 41 are symmetrical with respect to the longitudinal line 42 passing along the center of the upper region 4.

As such, when the two deformations 50, 51 are made in the lower region, these two deformations are symmetrical with respect to the longitudinal line passing along the center of each lower region.

Asymmetrical deformations can be provided.

The profile according to the invention can have only one deformation or even three deformations in the upper and lower regions.

The figure shows grooves made in the profile of both the web 6 and the upper region 4 to produce the reinforcement 67, 43, 44. This groove portion is a deformation portion of the yaw angle.

In the conventional method, the purpose of these reinforcements is to enhance the mechanical strength of the profile according to the invention.

Reference is now made here to FIG. 3, which shows a profile according to the invention of the kind shown in FIGS. 1 and 2, wherein the profile is a central rib arranged laterally by two half-ribs 31, 32. 30 is provided. 3 shows the interior of the cavity 38 formed by ribs 30 with braces 33 supported on deep bulges 66 and in the upper region 650 of the wall 65.

As such, the brace 37 is provided in the cavity 38 formed by the half-ribs 32.

The upper region 650 of the wall 65 is an oblique wall facing inwardly of the rib 30 with respect to the upper portion 63 of the web 6, so that each of them is an arched support-shaped brace 33, 37. Can accommodate the end of the).

A bulge 66 is provided between the upper and upper regions 650 of the web 6 to make the brace easier to fit, creating a space that increases the brace holding area.

In the conventional manner, this brace can be used to attach the elements of the ceiling, and immediately the flooring is produced using the profile according to the invention as formwork. These elements can in particular be pipes or cables.

This eliminates the need to penetrate the profile to attach the elements and thus prevents the profile from weakening.

In addition, the weight of the suspended elements pulls the brace downwards. The brace thus exerts a lateral thrust on the outside of the cavity, strengthening the bond between the profile and the concrete poured into the profile.

The brace has threads 330 and 370 for attaching these elements and for receiving the screws. This thread protrudes from the surface of the brace 33 and is within the thickness of the brace 37.

9 shows one embodiment of a brace 39 with a thread 390, which can be disposed in a cavity of a profile according to the present invention.

Referring now to Figures 4 and 5, the steps of one embodiment of how to implement the method according to the present invention are described.

The method first involves flattening a metal sheet between a set thickness of 0.6 mm and 2 mm.

The next step includes creating two concave deformations on each side of the longitudinal line and the center line 52 of the sheet. This deformation is similar to the deformation shown in FIGS. 1 and 2.

Subsequently in the second step, two deformation parts 40 and 41 are made, which are arranged equally symmetrically with respect to the longitudinal line 52, but more than the deformation part 60 created in the first step. Farther away from the line. This deformation is similar to the deformation shown in FIGS. 1 and 2.

A bulge 66 is then created in each deformable portion 60. The bulge is a protruding or protruding deformation that expands the cavity formed by each rib in the finished profile.

In the last step, grooves 67, 43 and 44 are made in the sheet. In practice, these grooves will form the reinforcement shown in particular in FIG. 2. These are concave angles, like the deformable portions 60, 40, 41.

In addition, the reinforcement 67 needs to be produced when the metal sheet is still flat. However, the grooves 43 and 44 can be created after the profile is bent into a shape for obtaining ribs.

In the embodiment shown in FIG. 4, a fold 53 is also formed between the two deformations 40 in the opposite direction of the reinforcement. Thus, the reinforcement has protrusions or protruding deformations, such as bulges 66.

The final step of the method is to modify the profile to obtain a substantially parallel longitudinal rib.

In the embodiment shown in FIG. 5, the obtained profile comprises two half-ribs 31a, 32a and the web of ribs 6 has a deformation 60.

Thus, the lower region 5 of the profile is located in the center of the central longitudinal line 52 of the sheet and the deformations 60 are located in the web 6 of the half-ribs 31a and 32a and the deformations 40 , 41 is located in its upper region 4.

6 and 7 show another embodiment of how to implement the method according to the invention.

Thus, starting from a metal sheet of a set thickness in a flat state, the method includes creating two concave deformed portions 51, 51 symmetric with respect to the longitudinal center line 52 of the sheet. After this first step, a deformation 60 is created in the sheet which is symmetrical about the line 52 or separated from it.

Once such deformations have been created, the last step of the method involves creating deformations 40, 41. This deformation is also symmetrical about the centerline 52 and is far from the deformation 60.

All deformations 40, 41, 50, 51, 60 are similar to those shown in FIGS. 1 and 2.

As mentioned above in connection with FIGS. 4 and 5, the bulge 66 and the grooves 67, 43, 44 are also produced in the sheet.

The final step of the method is to deform the sheet to get two half-ribs 31b, 32b.

As shown in FIG. 7, the deformable parts 50, 51 are located in the lower region 5 of the profile. In addition, the deformable portion 60 is arranged in the web 6 of the profile while the deformable portions 40, 41 are arranged in the upper region 4 of the profile.

The width of the metal sheet used depends on the number of ribs and on the height of the resulting profile.

The deformation of each reentrant is observed to correspond to a reduction in the width of the metal sheet between about 1 mm and 1.5 mm. Thus, in the embodiment shown in FIGS. 4 and 5, such a profile produced from a metal sheet having a starting width of 400 mm has a width of about 395 mm.

8 shows a tool that can be used to obtain the deformation of the gun eye shown in the various figures.

The tool consists of two pairs of rollers 70, 71 and 72, 73 rotatable in opposite directions, between which sheets to be deformed can be fed.

As shown in FIG. 8, within each pair, one roller 70, 72 has a profile 700, 720 that complements the 710, 730 by the other pair of rollers 71, 73, the profile being metal The sheets are engaged with one another in order to form two symmetrical reentrant deformations, such as the deformations 50, 51 of FIGS. 6 and 7.

Indeed, while the method according to the invention is carried out, the two pairs of rollers are separated from each other from the center to create a deformation of the reentrant in pair and symmetrically about the center of the sheet.

The tests produced show that, for a given thickness of sheet metal, the method according to the invention makes it possible to produce deformations of deeper depth than the deformations indicated by known metal profiles.

Thus, the deformed portion of the concave angle of the profile according to the present invention may have a depth of about 5 mm for a metal sheet having a depth of 3 mm or more and having a thickness of about 0.75 mm. As a comparison, conventional profiles of the same thickness have deformations obtained by compression and their depth is between about 2 mm and 2.5 mm.

As such, the depth of the deformable portion is between 6 mm and 7 mm for a metal sheet having a thickness of 1.5 mm.

This is because, for a given depth, this deformation makes the metal thinner. Thus, for similarly thin sheets, the deformations obtained using the method according to the invention above have a deeper depth.

One embodiment contemplated by the applicant creates a deformation that is symmetrical to the longitudinal center line of the sheet in a continuous pair, with the metal disposed laterally towards this longitudinal center line.

In addition, the placement of the metal towards the longitudinal centerline is also the result of the shape selected for deformation. This will remind here that the deformations are bounded by lines extending longitudinally and continuously, and the protrusions of the deformations in the plane of the sheet (or optionally on the web) are two-dimensional.

Various tests are conducted to illustrate this point.

These tests are conducted on four different metal profiles intended to be used in the construction of flooring.

The profiles considered are all wavy and filled with concrete, and conventional methods for producing steel / concrete flooring are obtained to obtain a beam.

The first profile (No. 1) is an existing profile in the web that includes a compressed shape of oblique segment shapes. This profile was produced by Bacacier in particular under reference H60.

The second profile (No. 2) is a profile according to the invention which has a yaw angle deformation only in the web (one deformation per web), which deformation of this type is shown in FIGS. 1 and 2.

The third profile (No. 3) is also a profile according to the invention as shown in Fig. 5, i.e. with a deformation of the yaw angle in the web and the upper region.

Profiles 1 to 3 also have three longitudinal bends along their lower regions, such as reference numeral 53 of FIGS. 4 and 5.

All these profiles are made of zinc sheet steel of type E320 and have the same thickness of 0.75 mm.

Testing includes positioning each beam obtained from four profiles of compression.

This compression is a Rasant type hydraulic with a voltage of 30 metric tons and has a pneumatic ram of 125 mm in diameter.

Each beam is centered in association with the compression ram and placed at each end of the two metal blocks.

Compression is indicated from 0 to 12 bar and fitted to a pneumatic gauge with a manual dispenser.

With a compression gauge indicating zero, the comparator is positioned under the beam to be tested and the center has a needle indicating zero.

The results obtained for each of the four beams are summarized in the table below.

These tests firstly show that beams obtained with profiles 2 and 3 according to the invention can withstand a pressure of 7 bar, while beam number 1 is broken at 6 bar.

In general, these tests show that the bending and maximum strength of the profile according to the invention is greater than the bending and maximum strength of the conventional profile.

This is done thanks to the depth of the deformation, which allows for better attachment of the concrete in the transverse direction of the profile.

The profile according to the invention thus makes it possible to produce transverse floorings of 4 mm or more and can be as long as 6 mm.

Reference numerals appearing in the claims are merely for ease of understanding and are not limited within this scope.

4: upper region 5: lower region
6: web 33: props
32: half-rib 40, 41, 50, 51: deformation part
67, 43, 44: Stiffener 65: Wall
66: Bulge 67: Stiffener

Claims (19)

Engagement form-type ridged metal that constitutes steel / concrete flooring with longitudinal corners 2,3 and concave deformations defining the upper 4 and lower 5 regions connected by web 6 In the profile, at least a portion of each web has a yaw angle deformable portion 60 bounded by a continuous line running parallel to the longitudinal direction of the profile, the length of the yaw angle deformable portion 60 being in this longitudinal direction. The ribbed metal profile in excess of the length of the part web. The method according to claim 1,
Skeleton metal profile, characterized in that the deformable portion (60) extends over the entire length of the web (6). The method according to claim 1 or 2,
At least one yaw angle deformable portion 40, 41; 50, 51 of at least a portion of the upper 4 and / or lower 5 region, the deformable portion being bounded by a continuous line, Wherein the length is longer than a portion of the upper and / or lower region. The method according to claim 3,
Wherein said deformation extends over the entire length of said upper and / or lower region. The method according to claim 1 or 2,
Wherein said continuous line is broken, symmetrical or otherwise, for example sawtoothed. The method according to claim 1 or 2,
Wherein said continuous line is a sinusoidal curve. 7. The method according to any one of claims 1 to 6,
In the web, lower region and / or upper region, the ribbed metal profile is provided in pairs and symmetrically. The method according to any one of claims 1 to 7,
Grooved metal profile, characterized in that the reinforcement (67, 43, 44) in the web and / or the upper region. The method according to any one of claims 1 to 8,
Grooved metal profile, characterized in that the lower region (5) has a bent portion (53). The method according to any one of claims 1 to 9,
Wherein said web has a protruding bulge extending in the longitudinal direction. (a) flattening a sheet of metal of set thickness,
(b) bounded by continuous lines in the longitudinal direction of the metal sheet and the projections of the plane of the metal sheet are two-dimensional, symmetrical about the longitudinal center line 52 of the metal sheet, and the length of the sheet Creating a deformation of the two reentrants over at least a portion of
(c) each time step (b) is carried out anew, and the step of repeating step (b) further away from the center line than the previous time of the deformation,
(d) at least the web 6 has the deformable portion 60, and mainly comprises parallel longitudinal ribs or half-ribs 1,30,31,32,31a, 32a, 31b, 32b. A method for obtaining a metal profile according to any one of claims 1 to 10, comprising modifying the profile to obtain. The method of claim 11,
Grooves (67, 43, 44) are created during two implementations of step (b), and after step (d) these grooves constitute a reinforcement. 12. The method according to claim 11 or 12,
A method for obtaining a metal profile, characterized in that a longitudinal protruding bulge (66) is produced after the implementation of step (b) in the deformable portion (60) for providing to the web (6). The method according to any one of claims 11 to 13,
After step (d), the profile comprises a deformation of the reentrant of the web, on the upper region and / or the lower region of the rib. The method according to any one of claims 11 to 14,
After step (d), producing a reinforcement on the upper and / or lower regions of the ribs. The method according to any one of claims 11 to 15,
Producing at least one bend (53) on the lower region (5) of the profile before or after step (d). At least one pair of rollers 70, 71; 72, 73 of the toothed wheel type is mounted, each tooth generating a profile according to any one of claims 1 to 10, which upsets the metal to form a deformation of the yaw angle. Device. A method of applying a profile according to any one of claims 1 to 10 for the production of engagement-form flooring. Participant-form flooring obtained with a profile according to claim 10 wherein at least one brace 33, 37 withstands against the bulge 66 and is disposed in the cavity 38 of the profile.

Images