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1. WO2020141564 - TWO WAY HALLOW-CORE SLAB

Publication Number WO/2020/141564
Publication Date 09.07.2020
International Application No. PCT/IR2019/050001
International Filing Date 03.01.2019
IPC
E04C 2/04 2006.01
EFIXED CONSTRUCTIONS
04BUILDING
CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
2Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
02characterised by specified materials
04of concrete or other stone-like material; of asbestos cement
E04C 2/34 2006.01
EFIXED CONSTRUCTIONS
04BUILDING
CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
2Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
30characterised by the shape or structure
34composed of two or more spaced sheet-like parts
CPC
E04B 5/326
EFIXED CONSTRUCTIONS
04BUILDING
BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
5Floors; Floor construction with regard to insulation; Connections specially adapted therefor
16Load-carrying floor structures wholly or partly cast or similarly formed in situ
32Floor structures wholly cast in situ with or without form units or reinforcements
326with hollow filling elements
E04C 5/20
EFIXED CONSTRUCTIONS
04BUILDING
CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
5Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
20of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
Applicants
  • BAHAVAR, Ali
Inventors
  • BAHAVAR, Ali
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TWO WAY HALLOW-CORE SLAB
(FR) DALLE À NOYAU CREUX BIDIRECTIONNELLE
Abstract
(EN)
Weight is a highly effective factor in the design of structures with different occupancies, particularly in cases where it increases the gravity and seismic forces acting on the structure. In applications, thickness of the beams and slabs with large spacing must be increased, leading to a corresponding increase in structural weight. Different methods including the hollow-core and the waffle methods have been proposed to reduce ceiling weight in structures. The proposed method in this paper would not only provide a greater ceiling weight reduction than other similar methods, but also eliminate certain limitations associated with the hollow-core method, including the precast production and the one-way action of this design. To this end, permanent forms were designed and placed together inside the concrete to provide end-to-end voids through the midsection of the concrete slab in two mutually perpendicular directions and a greater volume of unworkable concrete would be removed from the slab midsection.
(FR)
Le poids est un facteur hautement efficace dans la conception de structures ayant des usages différents, en particulier dans des cas où elle augmente la gravité et les forces sismiques agissant sur la structure. Dans des applications, l'épaisseur des poutres et des dalles à grand espacement doit être augmentée, ce qui conduit à une augmentation correspondante du poids structurel. Différents procédés comprenant le noyau creux et les procédés de gaufrage ont été proposés pour réduire le poids du plafond dans des structures. Le procédé de la présente invention permet non seulement d'obtenir une plus grande réduction du poids du plafond que d'autres procédés similaires, mais permet également d'éliminer certaines limitations associées au procédé à noyau creux, y compris la production préfabriquée et l'action unidirectionnelle de cette conception. A cet effet, des formes permanentes ont été conçues et placées ensemble à l'intérieur du béton pour fournir des vides de bout en bout à travers la section médiane de la dalle de béton dans deux directions mutuellement perpendiculaires et un volume supérieur de béton non exploitable serait retiré de la section médiane de dalle.
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