EP0658663A1 - Elément de remplissage pour planchers et tribunes en béton armé - Google Patents

Elément de remplissage pour planchers et tribunes en béton armé Download PDF

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Publication number
EP0658663A1
EP0658663A1 EP94118406A EP94118406A EP0658663A1 EP 0658663 A1 EP0658663 A1 EP 0658663A1 EP 94118406 A EP94118406 A EP 94118406A EP 94118406 A EP94118406 A EP 94118406A EP 0658663 A1 EP0658663 A1 EP 0658663A1
Authority
EP
European Patent Office
Prior art keywords
lightening
staging
slab
elements
lightening element
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.)
Withdrawn
Application number
EP94118406A
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German (de)
English (en)
Inventor
Florenzio Cappellato
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0658663A1 publication Critical patent/EP0658663A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element

Definitions

  • This invention relates to a lightening element for floors and staging of reinforced concrete (this material being indicated hereinafter as r.c. in the usual manner).
  • floors comprising lightening elements is the known floors formed from lattice slabs, consisting of prefabricated rectangular r.c. slabs in which reinforcement lattices formed from steel rods are partially embedded during the slab prefabrication, the lattices being arranged parallel to two sides of the slab at a predetermined distance between axes.
  • these lattice slabs have been installed side by side, corresponding rows of modular lightening elements, normally polystyrene or tile blocks, are arranged between the lattices of the individual slab.
  • the floor is then completed with a concrete casting of suitable thickness covering the entire assembly. When the concrete has set a monolithic floor is obtained in which said lightening elements remain incorporated.
  • channel-shaped electric welded meshes clad with a plastics sheet have been proposed, these channels being arranged between two adjacent lattices with their concavity facing downwards, so that when the finishing casting has been laid a sort of lightening tunnel is obtained.
  • Another type of floor or staging comprising lightening elements of one of the said types is that in which r.c. is cast in situ to form a lower plate and an upper plate spaced apart from each other and connected together by a series of parallel ribs or two series of crossed ribs, the lightening elements remaining trapped between the two plates.
  • the object of the present invention is to provide a lightening element of the aforesaid type which does not have the stated drawbacks of known lightening elements.
  • the modular lightening element of the present invention characterised by being channel-shaped and consisting of light concrete.
  • light concrete is formed by replacing conventional inerts (gravel) in normal concrete with inerts of very low specific gravity, such as expanded clay or pumice balls or polystyrene beads, or by replacing the inerts with voids to obtain so-called cellular concrete.
  • inerts such as expanded clay or pumice balls or polystyrene beads
  • the modular lightening element according to the present invention is used by laying it, with its concavity facing downwards, on a lower slab or plate which has just been cast. In this manner its lower edges penetrate slightly into the casting because of the weight of the element, to remain trapped within it when setting has occurred. Consequently in the case of prefabricated lattice slabs, normally comprising two rows of adjacent lightening elements (each row forming a tunnel), the lightening elements according to the present invention remain permanently connected to the slab. Hence this latter already incorporates the lightening elements. Consequently, when the adjacent lattice slabs have been laid, it is necessary merely to apply the finishing casting to obtain the relative floor.
  • the lightening element according to the present invention is formed from a material which in practice does not absorb water or, even if containing polystyrene beads, absorbs it in minimal quantity such as not to give rise to the problems of known lightening elements. In any event any water stagnation within the floor can be prevented by simply providing suitable holes in the prefabricated lattice slab or in the lower plate in the case of the said double plate floors cast in situ.
  • the lightening element can comprise a reinforcement, such as a steel mesh, conveniently of electric welded type.
  • the lightening element according to the present invention consists of a material of high fire resistance
  • the floor or staging containing it will also have this characteristic, which is particularly important in view of current antifire regulations.
  • the lightening element of the present invention is of fairly low specific gravity, it has high mechanical strength due to its box form, this being decidedly improved by the possible presence of a reinforcement. In this respect, if properly dimensioned, the lightening element does not suffer from breakage problems either during transport or during its installation and the laying of the finishing casting for the floor or staging.
  • the lightening element can be produced in a range of sizes, so as to satisfy all design requirements for floors or staging of the type comprising lightening elements.
  • the lightening element can also comprise an element for closing one and/or the other of the two open ends of the lightening element, when used.
  • said closure element can be used to close the outwardly facing end of the first and last lightening element of the row, hence preventing the finishing concrete entering the tunnel formed by the lightening element of the row (even though it normally does so only over a short distance).
  • the closure element is conveniently flat and can comprise a reinforcement, preferably of electric welded steel mesh.
  • the lightening element 10 is channel-shaped (in the figure it being shown inverted, in its position of use).
  • the element 10 consists of a horizontal wall 12 and two lateral walls 14 and 16 extending downwards and slightly diverging.
  • the thickness of the lateral walls 14 and 16 and of the base wall 12 is chosen on the basis of the dimensions of the element itself and of the type of concrete with which it is formed, such as to achieve sufficient strength for its purpose.
  • these can include a reinforcement (not shown on the drawing for reasons of simplicity and clarity).
  • a particularly convenient type of reinforcement is electric welded steel mesh.
  • the closure element 18 shown in Figure 2 is flat and is of isosceles trapezium shape, suitable for closing the two open ends of the tunnel formed by a row of lightening elements 10, to prevent the floor finishing casting entering said tunnel.
  • the closure element 18 can also be provided with reinforcement (for simplicity not shown on the drawing), for example of electric welded steel mesh.
  • the floor portion 20, of lattice slab type consists of a prefabricated lattice slab 22 comprising an r.c. slab 24 in which three usual reinforcement lattices 26, 28, 30 are partially embedded.
  • the lattice slab 22 having made the relative concrete casting - in which the longitudinal reinforcements (the lower longitudinal rods of the lattices 26, 28, 30) and the transverse distribution reinforcements 34 remain incorporated - the lightening elements are rested directly on said casting in two rows (indicated respectively by 10A and 10B in Figure 3), each row of lightening elements being contained centered between two adjacent lattices.
  • the lower edge of the lateral walls of the lightening elements 10A and 10B sink slightly into the casting because of their weight. Consequently when the slab 24 has set, the lightening elements 10A and 10B remain fixed permanently in the slab 24 to form a single body with the lattice slab 22.
  • the use of the lightening element according to the present invention is not limited to the type of floor (of lattice slabs) shown in Figure 3.
  • the lightening element can also be used for example in r.c. floors completely cast in situ and consisting of two plates (an upper and a lower) connected by ribs delimited by the lateral walls of the lightening elements.
  • the use of the lightening element according to the present invention does not substantially modify any of the conventional operating stages involved in the production of slab floors, or the stages involved in forming floors and staging cast in situ using lightening elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Rod-Shaped Construction Members (AREA)
EP94118406A 1993-12-15 1994-11-23 Elément de remplissage pour planchers et tribunes en béton armé Withdrawn EP0658663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT93MI002629A IT1264998B1 (it) 1993-12-15 1993-12-15 Elemento di alleggerimento per solai e impalcati in conglomerato cementizio armato
ITMI932629 1993-12-15

Publications (1)

Publication Number Publication Date
EP0658663A1 true EP0658663A1 (fr) 1995-06-21

Family

ID=11367330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118406A Withdrawn EP0658663A1 (fr) 1993-12-15 1994-11-23 Elément de remplissage pour planchers et tribunes en béton armé

Country Status (2)

Country Link
EP (1) EP0658663A1 (fr)
IT (1) IT1264998B1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2135306A1 (es) * 1996-05-16 1999-10-16 Extremadura 2000 De Estructura Tapadera aplicable a placas o vigas de carga con forma de pi apoyadas sobre una viga semiprefabricada a hormigonar.
WO1999064693A1 (fr) * 1998-06-10 1999-12-16 Schoeller Plast Industries Gmbh Dispositif pour la rigidification d'elements en beton de grande superficie, en particulier de sols et de plafonds de batiments a plusieurs etages
AU2003265748B2 (en) * 2002-09-23 2006-05-25 Airdeck Building Concepts NV Construction element and method for manufacturing it
CN100427701C (zh) * 2002-12-22 2008-10-22 邱则有 一种现浇钢筋砼成孔用构件
EP1916350A3 (fr) * 2006-10-18 2011-01-12 Alfredo Piacentini Module préfabriqué pour la construction planchers
CN102767256A (zh) * 2012-08-09 2012-11-07 贵州皆盈科技开发有限公司 一种填充模模块及其施工方法
JP2016217082A (ja) * 2015-05-26 2016-12-22 フジモリ産業株式会社 プレキャストコンクリートスラブ
CN111139960A (zh) * 2020-01-17 2020-05-12 湖南中星建筑结构科技有限公司 一种提高防火等级的空心楼盖内置金属组合芯模

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH167077A (de) * 1932-08-30 1934-02-15 Frans Netscher Arend Verfahren zur Herstellung von biegungsfesten, platten-förmigen Gegenständen aus plastischem, später erhärtendem Material.
FR1275848A (fr) * 1960-12-09 1961-11-10 Hourdis perfectionné
DE1534696A1 (de) * 1965-11-08 1969-07-31 Atlas Stone Company Ltd Formstueck zur Herstellung von Fussboeden oder Decken
CH565909A5 (en) * 1971-12-09 1975-08-29 Katzenberger Helmut Heat-providing lost-formwork concrete ceiling - with form units' underside covered by surface heating elements
GB2070097A (en) * 1979-12-12 1981-09-03 Software Licencees Ltd Floor support system comprising channelled lightweight concrete beams

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH167077A (de) * 1932-08-30 1934-02-15 Frans Netscher Arend Verfahren zur Herstellung von biegungsfesten, platten-förmigen Gegenständen aus plastischem, später erhärtendem Material.
FR1275848A (fr) * 1960-12-09 1961-11-10 Hourdis perfectionné
DE1534696A1 (de) * 1965-11-08 1969-07-31 Atlas Stone Company Ltd Formstueck zur Herstellung von Fussboeden oder Decken
CH565909A5 (en) * 1971-12-09 1975-08-29 Katzenberger Helmut Heat-providing lost-formwork concrete ceiling - with form units' underside covered by surface heating elements
GB2070097A (en) * 1979-12-12 1981-09-03 Software Licencees Ltd Floor support system comprising channelled lightweight concrete beams

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2135306A1 (es) * 1996-05-16 1999-10-16 Extremadura 2000 De Estructura Tapadera aplicable a placas o vigas de carga con forma de pi apoyadas sobre una viga semiprefabricada a hormigonar.
WO1999064693A1 (fr) * 1998-06-10 1999-12-16 Schoeller Plast Industries Gmbh Dispositif pour la rigidification d'elements en beton de grande superficie, en particulier de sols et de plafonds de batiments a plusieurs etages
AU2003265748B2 (en) * 2002-09-23 2006-05-25 Airdeck Building Concepts NV Construction element and method for manufacturing it
US7685789B2 (en) 2002-09-23 2010-03-30 Gecoleng Aktiengesellschaft Construction element and method for manufacturing it
CN100427701C (zh) * 2002-12-22 2008-10-22 邱则有 一种现浇钢筋砼成孔用构件
EP1916350A3 (fr) * 2006-10-18 2011-01-12 Alfredo Piacentini Module préfabriqué pour la construction planchers
CN102767256A (zh) * 2012-08-09 2012-11-07 贵州皆盈科技开发有限公司 一种填充模模块及其施工方法
CN102767256B (zh) * 2012-08-09 2014-04-09 贵州皆盈科技开发有限公司 一种填充模模块及其施工方法
JP2016217082A (ja) * 2015-05-26 2016-12-22 フジモリ産業株式会社 プレキャストコンクリートスラブ
CN111139960A (zh) * 2020-01-17 2020-05-12 湖南中星建筑结构科技有限公司 一种提高防火等级的空心楼盖内置金属组合芯模

Also Published As

Publication number Publication date
ITMI932629A1 (it) 1995-06-15
IT1264998B1 (it) 1996-10-17
ITMI932629A0 (it) 1993-12-15

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