Doughtnut-shaped hollow core body, bidirectional hollow core slab using the same, and construction method thereof

a hollow core and doughnut technology, applied in the field of light weight, can solve the problems of low structural resistance of the slab, inability to apply one-way hollow core slabs to buildings, and lack of design changes and additional costs, and achieve the effect of simplifying the arrangement of the slab steel bars
US20130036693A1Inactive Publication Date: 2013-02-14IUCF HYU (IND UNIV COOP FOUND HANYANG UNIV) +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
IUCF HYU (IND UNIV COOP FOUND HANYANG UNIV)
Publication Date
2013-02-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a lightweight bidirectional hollow core slab, and a doughnut-shaped hollow core body which may be advantageously used in the construction of a bidirectional hollow core slab. The doughnut-shaped hollow core body according to the present invention includes an outer case formed in a generally doughnut shape, wherein a hollow portion with a circular section is formed in the center thereof and corners are rounded with curved surfaces. The bidirectional hollow core slab according to the present invention is made by stably locating the doughnut-shaped hollow core bodies in concrete in such a manner that the doughnut-shaped hollow core body is restrained and mounted in steel bar cages or on the upper and lower steel bars.
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Description

TECHNICAL FIELD

[0001] The present invention relates to a lightweight bidirectional hollow core slab that is made by arranging a plurality of hollow core bodies between upper and lower steel bars in a form of a matrix in horizontal and vertical directions thereof and by burying the hollow core bodies into concrete, thereby providing bidirectional resistance characteristics. More particularly, the present invention relates to a doughnut-shaped hollow core body advantageously used for a bidirectional hollow core slab, the bidirectional hollow core body using the doughnut-shaped hollow core body, and a construction method of the bidirectional hollow core body.BACKGROUND OF INVENTION

[0002] A hollow core slab has hollow cores formed on the center thereof, which provide more excellent sectional performance than the self weight and are advantageous in the reduction of the noise between floors.

[0003] In view of the light weight of the slab, one of slab systems used for current buildings is one...

Claims

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