EP3173542B1 - Lightening filling body for concrete floor and ceiling slabs - Google Patents
Lightening filling body for concrete floor and ceiling slabs Download PDFInfo
- Publication number
- EP3173542B1 EP3173542B1 EP15825427.6A EP15825427A EP3173542B1 EP 3173542 B1 EP3173542 B1 EP 3173542B1 EP 15825427 A EP15825427 A EP 15825427A EP 3173542 B1 EP3173542 B1 EP 3173542B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filling body
- lightening
- concrete floor
- ceiling slabs
- support ribs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002787 reinforcement Effects 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims 2
- 238000005304 joining Methods 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 6
- 238000000071 blow moulding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
- E04B5/328—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements the filling elements being spherical
Definitions
- This invention refers to a filling body, according to the preamble of claim 1, used for occupying the space not subjected to tension in a concrete slab reinforced with metal meshes or rods (for example for a ceiling or floor deck) provided with a set of spacing ribs on which the rods rest.
- a filling body used for occupying the space not subjected to tension in a concrete slab reinforced with metal meshes or rods (for example for a ceiling or floor deck) provided with a set of spacing ribs on which the rods rest.
- This is made up of a single body or two halves, generally identical to each other, able to be joined on site or before being transported to the place where these are to be placed; it also comprises a set of reinforcement ribs for the surface of the body to prevent it from deforming.
- ES2192454 which defines a caisson with a hollow body and a flat base, and means for joining these.
- ES 1071113 U describes a polystyrene filling as a means for lightening slabs.
- ES 1069999 describes a part applicable to lightening concrete slabs, built in two halves that can be assembled together, which is able to be joined with other similar pieces along the surface of a slab, this part being made up of essentially square section bodies with tabs at each of the angles, separated from each other by means of intermediate furrows and in which the reinforcement is placed above and below the whole part on vertical plates arranged in diagonal directions of the square.
- This piece involves different disadvantages, and in particular the tensions in the directions other than the main ones may not be properly supported, through being a square-section piece. There is furthermore no lightening in the upper and lower parts at the level of the reinforcements, for which reason the cost in concrete will be greater without this meaning any advantage as regards the strength of the slab.
- assembling the halves requires one of four precise assembly positions, as the square shape of the body has a quaternary axis of symmetry.
- EP2474677 describes a disk for lightening weight which is formed of an oblate spheroidal body, with a central crown on the upper and lower sides, in which said central crown has divisions along its length.
- the crown laterally defines the support positions of the metal reinforcement.
- the support of the reinforcement nevertheless rests directly on the surface of the spheroidal body, which means that the covering of the concrete-reinforcement assembly is significantly reduced in the support zone in the disk, jeopardising its durability and strength.
- the patent US 2012/311959 A1 Diedzik Georg et al. Discloses a lightening element formed by two preferably symmetrical bodies generated by assembling them on their open faces, has different ribs on their concave faces to stiffen the assembly as well as having clips with those that are retained rods that keep the lightening elements distributed on the floor that is to be built, the structural reinforcement rests on these rods, thus differing from the technical solution recommended.
- This invention proposes a lightening device, according to claim 1, for concrete slabs with a spheroidal shape and an element positioning the reinforcement, which is made in two identical halves which allow this to be assembled in practically any angular position or in a single piece, and which has ribs emerging from the positioning element which define a support for the reinforcement so that the concrete surrounds the rods appropriately without forfeiting any strength and durability.
- this defines a hollow body after being assembled.
- the filling and lightening body of the invention is provided with the following elements:
- the ceiling or floor slab is assembled by placing the lower mesh and the lightening devices of the invention, at regular distances, in the gaps formed by its longitudinal and transversal rods, to form a matrix of rows and columns, also defining longitudinal and transversal spaces between them which will form the corresponding beams.
- the reinforcement rests on the support ribs.
- the central concavity is filled with concrete so that after the floor or ceiling slab has been made this has a continuous support in that zone over the entire surface area of said concavity.
- This invention is described as a filling body (1), which has a spheroidal shape, normally with a substantially vertical (cylindrical) lateral portion, and a substantially horizontal upper portion, which is made up of two half-bodies (2), made by injection or blow-moulding of plastic material.
- the two half-bodies are preferably identical to each other and comprise means for joining one half-body to the other.
- Said joining means are evenly distributed at regular or irregular angular distances, and can alternate male elements with female elements, so that one half body can be joined to the other (2) in one of many relative angular positions.
- the means for joining the half-bodies (2) can be:
- the upper surface (or lower surface, in the opposite half-body) of the half-body (2) is provided with a positioning element.
- a positioning element (5) in an annular or crown shape with a continuous height is placed in the horizontal portion of the lightening body (1), around the axis of symmetry in the upper (or lower) spheroidal cap.
- the annular crown leaves a substantially cylindrical hollow inside it which will be filled in with the concrete when this is poured into the corresponding formwork.
- the positioning element (6) is formed of a set of wedges (8), whose vertex is angled towards the axis of symmetry. These wedges have a concavity (7) with progressive depth until this blends with the surface in the zone close to the axis of symmetry.
- the curve of this concavity has the advantage of representing a strong support for the concrete, stronger towards the centre and less towards the periphery, and is reinforced by the spaces found between each pair of wedges (8).
- a set of support ribs (3) in a radial position which are placed in a super-elevated position in respect of the surface of the filling body (1).
- said ribs consist of two plates formed on the surface of said filling body (1); (31) is used to indicate the section according to said first option.
- the ribs are formed by the deformation of the surface of said filling body (1) in an angular shape.
- the ribs have at least one substantially horizontal portion, whose upper edge is aligned with the base of the positioning element (5, 6), so that said positioning element (5,6) rises up in respect of the height of said support ribs (3).
- a set of strengthening ribs (4) is used. These ribs, like the support ribs (3) can be made by forming a plate on the (interior or exterior) surface of the filling body (1), or by deformation of the surface of said filling body (1).
- the strengthening ribs (4) can be defined as a continuation of the support ribs (3) and/or independently from these.
- a positioning element is defined with a super-elevated portion (33) of the support ribs (3) in the part of these closest to the centre.
- the structural rods will rest on the support ribs (3) set at a certain distance from the hollow body, which will allow these to be totally covered with concrete, and at the same time it will be the rib itself which will determine by means of its over-elevated portion (33) the limit or position that said rod will have to take prior to pouring the concrete. All of this also allows a flow of the mass of concrete also in the central parts of the hollow bodies.
- the support ribs obviously also have a strengthening function.
- the number of radial ribs is not under eight nor over twenty-four, variable depending on their length, with an optimum number of sixteen.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Bridges Or Land Bridges (AREA)
Description
- This invention refers to a filling body, according to the preamble of
claim 1, used for occupying the space not subjected to tension in a concrete slab reinforced with metal meshes or rods (for example for a ceiling or floor deck) provided with a set of spacing ribs on which the rods rest. This is made up of a single body or two halves, generally identical to each other, able to be joined on site or before being transported to the place where these are to be placed; it also comprises a set of reinforcement ribs for the surface of the body to prevent it from deforming. - Different devices for lightening slabs made up of caissons which are integrated in the slab are known of. One example of this is
ES2192454 -
ES 1071113 U - This type of filling nevertheless has a problem in its manufacturing and storage, since a large volume of storage and transport is required due to its light weight.
ES1067600 -
ES 2089947 -
ES 1069999 - Apart from this, assembling the halves requires one of four precise assembly positions, as the square shape of the body has a quaternary axis of symmetry.
-
EP2474677 describes a disk for lightening weight which is formed of an oblate spheroidal body, with a central crown on the upper and lower sides, in which said central crown has divisions along its length. The crown laterally defines the support positions of the metal reinforcement. The support of the reinforcement nevertheless rests directly on the surface of the spheroidal body, which means that the covering of the concrete-reinforcement assembly is significantly reduced in the support zone in the disk, jeopardising its durability and strength. - The patent
US 2012/311959 A1 Diedzik Georg et al. Discloses a lightening element formed by two preferably symmetrical bodies generated by assembling them on their open faces, has different ribs on their concave faces to stiffen the assembly as well as having clips with those that are retained rods that keep the lightening elements distributed on the floor that is to be built, the structural reinforcement rests on these rods, thus differing from the technical solution recommended. - The patent of invention and
procedure EP 2 474 677 A2 of the applicant Levinton Ricardo Horacio et al. Collects a lightening element with a raised crown used to be placed inside a steel mesh, this concept limits its use to fixed distribution patterns, not present elevators for the reinforcements of the slab differing from the invention object of this report. - Finally, the
Korean patent KR 100 875 698 B1 - Therefore, lightening elements for concrete slabs such as the one recommended are not known.
- Document
US2012/311959 A1 discloses a lightening filling body according to the preamble ofclaim 1. - This invention proposes a lightening device, according to
claim 1, for concrete slabs with a spheroidal shape and an element positioning the reinforcement, which is made in two identical halves which allow this to be assembled in practically any angular position or in a single piece, and which has ribs emerging from the positioning element which define a support for the reinforcement so that the concrete surrounds the rods appropriately without forfeiting any strength and durability. When these are two halves, this defines a hollow body after being assembled. - In a more detailed fashion, the filling and lightening body of the invention is provided with the following elements:
- A single body made by blow-moulding, or a pair of spheroidal half-bodies normally made by injection; the bodies of this pair of items will normally be identical.
- Means for joining the spheroidal bodies together in different angular positions, when the product is made in two half-bodies; this joining means could be of the mortise and tenon type, bayonet type or any joining means suitable for the purpose proposed;
- A set of external ribs for supporting the reinforcement; these external ribs for supporting the reinforcement are elements emerging perpendicularly from the surface of the spheroidal body or consist of a fold or deformation of said surface;
- A set of strengthening ribs of the spheroidal body; said ribs can be interior, exterior or have an interior portion and an exterior portion; when placed on the inside, some of these ribs could be an extension of the support ribs;
- Upper and lower elements for positioning the reinforcements according to the characterizing portion of
claim 1; according to one option these elements consist of upper and lower caps emerging from the spheroidal body; according to one option the caps have a concave spheroidal shape; according to another independent option compatible with the previous one, the caps are made up of a set of portions in the form of a circular sector, specifically four circular sectors; according to another option these elements consist of two continuous circular crowns; the positioning elements may also be formed of an extension of the ribs, for example by means of super-elevation of the end closest to the centre of the respective upper and lower portions of the filling body, understanding that said ribs could even extend beyond said super-elevation for aesthetic and/or construction reasons. - The ceiling or floor slab is assembled by placing the lower mesh and the lightening devices of the invention, at regular distances, in the gaps formed by its longitudinal and transversal rods, to form a matrix of rows and columns, also defining longitudinal and transversal spaces between them which will form the corresponding beams. The reinforcement rests on the support ribs. The central concavity is filled with concrete so that after the floor or ceiling slab has been made this has a continuous support in that zone over the entire surface area of said concavity.
- In order to illustrate the following explanation we are enclosing seven sheets of drawings with this descriptive report, in which the essence of this invention is represented in fourteen figures as an example, and in which:
- Figure 1
- shows an upper view of a filling and lightening body according to a first embodiment of this invention;
- Figure 2
- shows a lateral view of the filling body of
Figure 1 ; - Figure 3
- shows an upper view of a filling and lightening body according to a second embodiment of this invention;
- Figure 4
- shows a cross-section view of the filling body of
Figure 3 ; - Figure 5
- shows a lateral view of the filling body of
Figures 3 and 4 ; - Figure 6
- shows a lateral view of the filling body of
Figures 3 to 5 , but turned though a certain angle in respect of the one seen inFigure 5 ; - Figure 7
- shows a detail of a cross-section of the filling body at one of the support ribs;
- Figure 8
- shows a detail of a cross-section of the filling body at one of the support ribs according to a first embodiment option;
- Figure 9
- shows a detail of a cross-section of the filling body at one of the support ribs according to a second embodiment option;
- Figure 10
- shows a perspective view of the filling body according to a first form of embodiment, according to
Figures 1 and 2 ; - Figure 11
- shows a perspective view of the filling body according to a second form of embodiment, according to
Figures 3 to 6 , - Figure 12
- shows an upper view of the filling and lightening body according to a third form of embodiment in which the support ribs form a super-elevation in a central portion;
- Figure 13
- shows a side view of the filling body in the form of embodiment of
Figure 12 ; and - Figure 14
- shows a perspective view of the filling body according to the third form of embodiment of
Figures 12 and 13 . - The following reference numbers can be observed in these figures:
- 1
- filling body
- 2
- each of the two half-bodies of the filling body
- 3
- support ribs
- 4
- strengthening ribs
- 5
- positioning element, according to a first embodiment, in the shape of a continuous crown
- 6
- positioning element, according to a second embodiment, in the shape of circular sectors (portions in an essentially triangular shape, like cheese cut into wedges)
- 7
- concavity of the positioning element
- 8
- wedge, i.e. portion of the positioning element in a wedge-shape
- 31
- solid section of the support ribs
- 32
- angular section of the support ribs through deformation of the surface of the filling body
- 33
- over-elevated portion of the support ribs
- This invention is described as a filling body (1), which has a spheroidal shape, normally with a substantially vertical (cylindrical) lateral portion, and a substantially horizontal upper portion, which is made up of two half-bodies (2), made by injection or blow-moulding of plastic material. The two half-bodies are preferably identical to each other and comprise means for joining one half-body to the other. Said joining means are evenly distributed at regular or irregular angular distances, and can alternate male elements with female elements, so that one half body can be joined to the other (2) in one of many relative angular positions. Without constituting any limitation, the means for joining the half-bodies (2) can be:
- A mortise and tenon join;
- Threaded portions;
- A bayonet closure;
- Press-fitting.
- The upper surface (or lower surface, in the opposite half-body) of the half-body (2) is provided with a positioning element. In accordance with a first form of embodiment, a positioning element (5) in an annular or crown shape with a continuous height is placed in the horizontal portion of the lightening body (1), around the axis of symmetry in the upper (or lower) spheroidal cap. In this case, the annular crown leaves a substantially cylindrical hollow inside it which will be filled in with the concrete when this is poured into the corresponding formwork.
- In accordance with a second form of embodiment the positioning element (6) is formed of a set of wedges (8), whose vertex is angled towards the axis of symmetry. These wedges have a concavity (7) with progressive depth until this blends with the surface in the zone close to the axis of symmetry. The curve of this concavity has the advantage of representing a strong support for the concrete, stronger towards the centre and less towards the periphery, and is reinforced by the spaces found between each pair of wedges (8).
- According to the invention, on the surface of the filling body, in zones close to the positioning element (5, 6) there is a set of support ribs (3) in a radial position, which are placed in a super-elevated position in respect of the surface of the filling body (1). According to a first option (
Figure 8 ) said ribs consist of two plates formed on the surface of said filling body (1); (31) is used to indicate the section according to said first option. According to a second option, which is shown inFigure 9 , and indicated with (32), the ribs are formed by the deformation of the surface of said filling body (1) in an angular shape. The ribs have at least one substantially horizontal portion, whose upper edge is aligned with the base of the positioning element (5, 6), so that said positioning element (5,6) rises up in respect of the height of said support ribs (3). - Furthermore, to be able to minimise the amount of mass of the material used for making the filling body (1), a set of strengthening ribs (4) is used. These ribs, like the support ribs (3) can be made by forming a plate on the (interior or exterior) surface of the filling body (1), or by deformation of the surface of said filling body (1).
- The strengthening ribs (4) can be defined as a continuation of the support ribs (3) and/or independently from these.
- According to the invention, a positioning element is defined with a super-elevated portion (33) of the support ribs (3) in the part of these closest to the centre.
- According to the invention, the structural rods will rest on the support ribs (3) set at a certain distance from the hollow body, which will allow these to be totally covered with concrete, and at the same time it will be the rib itself which will determine by means of its over-elevated portion (33) the limit or position that said rod will have to take prior to pouring the concrete. All of this also allows a flow of the mass of concrete also in the central parts of the hollow bodies.
- The support ribs obviously also have a strengthening function.
- The number of radial ribs is not under eight nor over twenty-four, variable depending on their length, with an optimum number of sixteen.
- By using these filling bodies safer, cheaper and/or stronger structures than the ones described in the background can be obtained.
Claims (14)
- A lightening filling body for concrete floor and ceiling slabs, this body being made up of a hollow piece which has a general configuration with spheroidal shape, with a perimeter portion and central upper and lower portions, the lightening filling body comprising:• a positioning element (5,6) formed in the lower portion;• a positioning element (5, 6) formed in the upper portion;• a set of spacing support ribs (3) for the metal reinforcements of the slab, which are arranged in a super-elevated position in respect of the surface of the filling body (1);the lightening filling body (1) being characterized by also comprising:
a positioning body (6) formed of a set of super-elevated wedges (33) of the support ribs (3) at the end closest to the centre of the upper and lower portions respectively, of said lightening filling body (1). - A lightening filling body for concrete floor and ceiling slabs, according to claim 1, characterized in that this is made up of two preferably identical half-bodies (2), which are able to be joined together to define, after being assembled, a single hollow filling body (1).
- A lightening filling body for concrete floor and ceiling slabs, according to one of claims 1 to 2, characterized in that the perimeter portion has from the side a substantially cylindrical shape, vertical in the usage position, and in that the upper and lower port ions have a substantially flat shape, which is horizontal in the usage position.
- A lightening filling body for concrete floor and ceiling slabs, according to one of claims 1 to 2, characterized in that this has a substantially spherical shape.
- A lightening filling body for concrete floor and ceiling slabs, according to one of claims 1 to 4, characterised in that the positioning elements (5,6) formed in the upper and lower port ions of the filling body also constitute spacing and centring elements for the structural reinforcements.
- A lightening filling body for concrete floor and ceiling slabs, according to any of claims 1 to 5, characterised in that the support ribs (3) are formed as plates emerging from the surface of the filling body (1) placed in radial position, with a solid section(31).
- A lightening filling body for concrete floor and ceiling slabs, according to any of claims 1 to 5, characterised in that the support ribs (3) are formed as a deformation of the surface of the filling body (1) and are placed in a radial position, with an angular section (32).
- A lightening filling body for concrete floor and ceiling slabs, according to any of claims 6 to 7, characterised in that the support ribs (3) have at least one substantially horizontal portion, whose upper edge is aligned with the base of the positioning element (5,6), so that said positioning element (5,6) emerges in respect of the height of said support ribs (3) .
- A lightening filling body for concrete floor and ceiling slabs, according to any of claims 1 to 8, characterised in that the number of radial support ribs (3) is equal or over eight.
- A lightening filling body for concrete floor and ceiling slabs, according to claim 9, characterised in that the number of radial support ribs (3) is equal or over twenty-four.
- A lightening filling body for concrete floor and ceiling slabs, according to claim 9, characterised in that the number of radial support ribs (3) is sixteen.
- A lightening filling body for concrete floor and ceiling slabs, according to any of claims 1 to 11, characterised in that the positioning body (5) is formed of a perimeter crown with continuous height.
- A lightening filling body f or concrete floor and ceiling slabs, according to any of claims 1 to 1 1, characterised in that the positioning body (6) is formed of a set of wedges (8) with a circular sector shape.
- A lightening filling body for concrete floor and ceiling slabs, according to claim 13, characterised in that the positioning body (6) has a concavity (7), with progressive depth until this blends with the surface in the zone close to the axis of symmetry.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201431042 | 2014-07-25 | ||
PCT/ES2015/070227 WO2016012639A1 (en) | 2014-07-25 | 2015-03-26 | Light-weight filling body for concrete slabs and blocks |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3173542A1 EP3173542A1 (en) | 2017-05-31 |
EP3173542A4 EP3173542A4 (en) | 2018-12-26 |
EP3173542B1 true EP3173542B1 (en) | 2021-09-15 |
Family
ID=58633124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15825427.6A Active EP3173542B1 (en) | 2014-07-25 | 2015-03-26 | Lightening filling body for concrete floor and ceiling slabs |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3173542B1 (en) |
ES (1) | ES2898067T3 (en) |
PT (1) | PT3173542T (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201900005770A1 (en) * | 2019-04-15 | 2020-10-15 | Ubaldo Turrini | LIGHTENING FORMWORK FOR REINFORCED CONCRETE ARTICLES |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100875698B1 (en) * | 2008-08-28 | 2008-12-23 | 주식회사 반석티비에스 | Unit pannel for holllow concrete slab |
AR073837A1 (en) * | 2009-10-29 | 2010-12-09 | Levinton Ricardo Horacio | CONSTRUCTION METHOD FOR MAKING LIGHT STRUCTURES, HOW TO BE Slabs, PRELOSES, PLATES, TABIQUES AND BEAMS, WITH RELIEFING DISCS AND BADS DESIGNED SPECIFICALLY FOR THIS METHOD |
EP2336445A1 (en) * | 2009-12-21 | 2011-06-22 | Cobiax Technologies AG | Half shell element for producing a cavity |
-
2015
- 2015-03-26 PT PT158254276T patent/PT3173542T/en unknown
- 2015-03-26 ES ES15825427T patent/ES2898067T3/en active Active
- 2015-03-26 EP EP15825427.6A patent/EP3173542B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ES2898067T3 (en) | 2022-03-03 |
EP3173542A1 (en) | 2017-05-31 |
PT3173542T (en) | 2021-11-11 |
EP3173542A4 (en) | 2018-12-26 |
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