WO2000053858A1 - Element de construction - Google Patents

Element de construction Download PDF

Info

Publication number
WO2000053858A1
WO2000053858A1 PCT/ZA2000/000043 ZA0000043W WO0053858A1 WO 2000053858 A1 WO2000053858 A1 WO 2000053858A1 ZA 0000043 W ZA0000043 W ZA 0000043W WO 0053858 A1 WO0053858 A1 WO 0053858A1
Authority
WO
WIPO (PCT)
Prior art keywords
void
slab
construction
construction element
beams
Prior art date
Application number
PCT/ZA2000/000043
Other languages
English (en)
Inventor
Paul Erwee
Original Assignee
Paul Erwee
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Paul Erwee filed Critical Paul Erwee
Priority to AU37752/00A priority Critical patent/AU3775200A/en
Publication of WO2000053858A1 publication Critical patent/WO2000053858A1/fr

Links

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
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/28—Cross-ribbed floors

Definitions

  • This invention relates to the construction of reinforced building elements
  • concrete slabs can be designed to span in one
  • space fillers are often referred to as "void formers" or
  • slabs that contain them are "hollow-block slabs", "ribbed slabs” or "waffle slabs
  • Prefabricated decking systems have been developed to simplify the horizontal formwork necessary for the casting of concrete slabs. All these systems use longitudinal prefabricated beam components (commonly known as ribs) and various types of prefabricated void formers.
  • the void formers currently used are shaped in such a way that two-way spanning of the slabs can only be done by modifying the prefabricated void formers at installation. Therefore, these void formers limit the structural application of
  • United States patent number US 4, 865, 264 to Landix discloses a concrete and metal slab-beam form system including temporary corrugated shuttering.
  • the secondary ribs provided by the corrugations appear only to provide stiffness to the span between adjacent primary beams or ribs.
  • a space-occupying element for use in casting a slab of a settable material over a gap
  • features of shape may include spacing means for spacing the side from an opposing
  • the spacing means may comprise a lip extending from said side.
  • the polymer is a plastics polymer.
  • the polymer may be polystyrene.
  • the side of the space-occupying element may define a cavity.
  • the space-occupying element may have a squared off shape or may
  • a first continuous recess is defined substantially above each primary beam
  • a second continuous recess is defined transversely to the beam components
  • primary and transverse secondary beams are formable in situ on setting
  • the secondary beams when formed and set providing resistance to tensile
  • directional spanning of a gap comprises a settable material already hardened, at least two primary tensile support-giving beam components extending so as to span the gap in a first direction,
  • the recesses may have a generally
  • the side defines a cavity.
  • the space-occupying elements are made of a lightweight material relative to the settable material.
  • directional span includes the steps of providing a gap to be spanned
  • the method includes the additional step of
  • the method may further include the step of placing a reinforcing mesh over
  • the space-occupying elements located between any pair of beam components are caused to abut each other.
  • the abutting space-occupying elements are preferably identically
  • a fifth aspect of the invention provides a method of forming a grid of primary
  • Yet a further aspect of the invention provides a construction element for use
  • construction element including a cavity or void-forming means which is configured to
  • the void-forming means may be configured to form a generally parallelepipedal void in the slab. Side walls of the void- forming means may be inclined outwardly from an operative upper surface thereof. The void-forming means may have operative upper
  • a cavity may be defined between the upper - and under - sides and the lateral and transverse side walls.
  • the locating means may include grooves or shoulder formations defined
  • the locating means may further include tongue formations which extend from
  • edge regions extending transversely between the edge
  • Spacer formations which may extend outwardly, preferably orthogonally, the
  • tongue formations may be provided to define a channel between opposing
  • the construction element may be formed from any suitable material
  • construction element may be formed from any material
  • construction assembly which includes at least a pair of longitudinally extending
  • the support beams may be in the form of any suitable pre-fabricated beam
  • the construction elements may be arranged in a side by side relationship
  • a method of forming a slab to span a gap defined between a pair of cross-members supported by pillars may be provided.
  • the method may
  • the method includes locating an elongate
  • Figure 1 is a schematic representation in partially cut away perspective view
  • Figure 2 provides side plan and end views of the space-occupying element in
  • Figure 3 is a three dimensional view of a further embodiment of the invention.
  • the space-occupying elements of the invention are beatable between and
  • occupying element may be made of a plastics material.
  • plastics material is polystyrene.
  • the space-occupying element comprises a body having at least one side.
  • the side preferably defines a cavity within.
  • the cavity may be open to the
  • atmosphere or may be filled with a gas or a low density solid.
  • gas or a low density solid it is also possible to fill with a gas or a low density solid.
  • the former may be a solid body of low density material, depending on
  • the application comprises hollow or solid moulded
  • polystyrene or other composite lightweight material In a preferred embodiment, the
  • void former a body that is hollow and air-filled. As such, it may be referred to as a "void former".
  • the space-occupying element is generally of
  • the space-occupying element has first external features of shape for enabling
  • the spacing of the space-occupying elements thus defines a grid pattern of recesses running respectively above and transverse to the direction of the primary
  • the cross-sectional shape of the channel-like recess may be rectangular,
  • This continuous recess extends across the gap to be spanned and preferably
  • the element has located in it an elongate reinforcing element.
  • the element may be of any material.
  • suitable material such as high tensile steel, engineered plastics, or alternatively a
  • such composite material may be a fibre reinforced resin or other plastics compound.
  • Fibre materials may include
  • the box-like space-occupying elements preferably are suspended so as to
  • space-occupying elements is defined.
  • the grid of recesses is filled with the settable material, encasing the transverse reinforcing elements and forming in situ respective sets of primary
  • a reinforcing mesh may be applied over the structure and a layer of the settable material applied over it. This assembly is then allowed to set.
  • the product formed thereby is a slab having two-directional tensile support.
  • the first external features of shape comprise a rebate in the lower portion of the side of the space- occupying element that runs in the direction of the supporting beam component.
  • the second external features of shape comprise an extending lip located on the side that faces the next space-occupying element when they are located between the beam components in operative configuration.
  • the lip provides a support surface for the settable material.
  • the lip is preferably moulded to be integral with the space-occupying element.
  • each space-occupying element is symmetrical. Furthermore, each space-occupying element has an extending lip at each end side such that the lips of adjacent such formers are brought into abutment with each other such that a substantially rectangular cross-sectioned channel-like recess is defined.
  • one end of the space-occupying element may have a lip and the other a recess, complementally shaped to receive a portion of the extending lip of the next placed space-occupying element.
  • FIG. 1 illustrates a non-limiting example of a concrete slab 10 constructed over a gap 12 with the space-occupying elements being void formers, an example of which is illustrated in Figure 2.
  • the slab is formed on a decking system 14 which comprises a plurality of prefabricated ribs 16 placed parallel to each other to span the gap 12 and
  • polystyrene void formers 18 located to be suspended between adjacent ribs.
  • the prefabricated ribs 16 are concrete beam components consisting of twin
  • steel reinforcement elements 20 encased in concrete.
  • the design of the steel reinforcement elements 20 will vary according to the design stresses and will
  • the ribs constitute a component of the
  • Concrete 22 is placed in situ on top of the decking system 14 to form the
  • the void formers or blocks 20 comprise hollow moulded polystyrene.
  • each block Extending from each block is a lip 26 comprising a small protrusion at each block
  • the lip is approximately the same thickness as the
  • the depth (D) of the block may vary from about 100 mm to 300 mm and the
  • the total length (L) of the block may vary from
  • void 103 in a slab the void-forming portion 102 having lateral and transverse side walls 104 and 106 respectively which depend operatively downwardly from a side 108 spanning same.
  • a tongue formation 110 extends orthogonally outwardly from the transverse side wall 106 and is further configured so as to butt against the sides of beams 112 which support the construction element 100 and retain the construction element 100 in position on the beams 112. In particular the construction element is supported by the beams 112 by the lateral side walls 104.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

L'invention concerne un élément de construction servant à préfabriquer une dalle destinée à couvrir une travée délimitée par un assemblage ou une structure de soutien; l'élément comprend une cavité ou un système de formation de vide, conçu pour former une cavité ou un vide dans la dalle, ainsi qu'un système de positionnement servant à placer et à retenir le système de formation de vide dans une position entre une paire de poutres sensiblement parallèles de la structure de soutien. L'invention concerne en outre un assemblage de construction qui comprend au moins deux poutres de soutien longitudinales conçues pour couvrir une travée entre une colonne et une poutraison transversale et les éléments de construction ci-décrits et/ou revendiqués dans l'une des revendications de l'invention, les éléments étant destinés à couvrir cette travée et reposer sur les poutres de soutien.
PCT/ZA2000/000043 1999-03-09 2000-03-09 Element de construction WO2000053858A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU37752/00A AU3775200A (en) 1999-03-09 2000-03-09 Construction element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA991875 1999-03-09
ZA99/1875 1999-03-09

Publications (1)

Publication Number Publication Date
WO2000053858A1 true WO2000053858A1 (fr) 2000-09-14

Family

ID=25587603

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2000/000043 WO2000053858A1 (fr) 1999-03-09 2000-03-09 Element de construction

Country Status (2)

Country Link
AU (1) AU3775200A (fr)
WO (1) WO2000053858A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102277916A (zh) * 2010-06-08 2011-12-14 湖南华廷筑邦建材有限公司 现浇砼板
CN103628605A (zh) * 2013-12-12 2014-03-12 中国建筑标准设计研究院 一种大跨度肋型预应力混凝土板及其施工方法
CN104847045A (zh) * 2015-05-12 2015-08-19 华汇工程设计集团股份有限公司 一种预制整浇井字形楼盖结构
CN107143077A (zh) * 2017-05-20 2017-09-08 谢孟 一种筒模及其施工方法
CN107142974A (zh) * 2017-05-20 2017-09-08 谢孟 一种组装式内模及其施工方法
US9879423B2 (en) 2012-11-23 2018-01-30 Kim Illner BREUNING System and method for biaxial semi-prefabricated lightweight concrete slab
CN112943250A (zh) * 2021-04-02 2021-06-11 湖南科技大学 充填区内预留巷道的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1197212A (fr) * 1958-05-29 1959-11-30 Perfectionnements aux hourdis pour planchers
DE1807765A1 (de) * 1968-11-08 1970-05-27 Heinrich Hebgen Schalungskoerper fuer Stahlbeton-Rippendecken

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1197212A (fr) * 1958-05-29 1959-11-30 Perfectionnements aux hourdis pour planchers
DE1807765A1 (de) * 1968-11-08 1970-05-27 Heinrich Hebgen Schalungskoerper fuer Stahlbeton-Rippendecken

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102277916A (zh) * 2010-06-08 2011-12-14 湖南华廷筑邦建材有限公司 现浇砼板
US9879423B2 (en) 2012-11-23 2018-01-30 Kim Illner BREUNING System and method for biaxial semi-prefabricated lightweight concrete slab
CN103628605A (zh) * 2013-12-12 2014-03-12 中国建筑标准设计研究院 一种大跨度肋型预应力混凝土板及其施工方法
CN104847045A (zh) * 2015-05-12 2015-08-19 华汇工程设计集团股份有限公司 一种预制整浇井字形楼盖结构
CN107143077A (zh) * 2017-05-20 2017-09-08 谢孟 一种筒模及其施工方法
CN107142974A (zh) * 2017-05-20 2017-09-08 谢孟 一种组装式内模及其施工方法
CN112943250A (zh) * 2021-04-02 2021-06-11 湖南科技大学 充填区内预留巷道的方法

Also Published As

Publication number Publication date
AU3775200A (en) 2000-09-28

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