KR20140142910A - One Touch Type Device For Preventing Buoyance In Hollow Core Slab - Google Patents

One Touch Type Device For Preventing Buoyance In Hollow Core Slab Download PDF

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Publication number
KR20140142910A
KR20140142910A KR1020130064646A KR20130064646A KR20140142910A KR 20140142910 A KR20140142910 A KR 20140142910A KR 1020130064646 A KR1020130064646 A KR 1020130064646A KR 20130064646 A KR20130064646 A KR 20130064646A KR 20140142910 A KR20140142910 A KR 20140142910A
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South Korea
Prior art keywords
main body
deck plate
anchor
hole
molding material
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Application number
KR1020130064646A
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Korean (ko)
Inventor
노영곤
Original Assignee
(주) 광장브이디에스
(주)윈하이텍
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Priority to KR1020130064646A priority Critical patent/KR20140142910A/en
Publication of KR20140142910A publication Critical patent/KR20140142910A/en

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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
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups

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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)

Abstract

The present invention relates to a one-touch type buoyancy prevention device of a hollow core slab. The one-touch type buoyancy prevention device of a hollow core slab comprises: a main body which has a fastening part on an upper end thereof, a protrusion under the middle thereof, and an anchor formed on a lower end thereof and rotated about a pin to be hung on the lower part of a deck plate; a fixture which is installed on the upper part of the deck plate and has a box or cylinder shape with upper and lower holes formed on upper and lower parts thereof so that the protrusion of the main body is hang on the upper hole and the lower end of the main body and the anchor are partially exposed through the lower hole; and an elastic member which has an elastic force in the fixture and is installed so that the upper and lower ends are positioned on a lower part of the protrusion and the upper part of the lower hole, respectively. If the main body is moved downward by a pressure applied downward when the lower end of the main body and the anchor are partially exposed through a deck plate hole of the deck plate, the anchor is rotated about the pin by eccentricity and is hung on the lower part of the deck plate. The fastening unit fastens a lightweight molding material or is fastened with a reinforced bar pressing the lightweight molding material downward, thus the one-touch type buoyancy prevention device of a hollow core slab can prevent the lightweight molding material from being damaged when slab concrete is casted.

Description

TECHNICAL FIELD [0001] The present invention relates to a one-touch type buoyancy prevention device for a hollow slab,

The present invention relates to a one-touch type buoyancy prevention device for a hollow slab, which is for preventing injury of a lightweight molding material provided on a deck plate and capable of easily installing an unskilled worker in a one-touch manner without any design change.

Due to the development of public law and the development of maintenance technology, the life span of buildings is gradually increasing and diversification of space utilization is essential. In order to diversify the space utilization, the space (span) partitioned by columns or walls must be widened, and an economical and reasonable long span structure is required.

A common method for long span implementation is to increase the thickness of the slab in proportion to the area of the slab, or to arrange a number of beams supporting the slab appropriately.

However, when the thickness of the slab is increased, the weight of the slab increases in proportion to the increase of the slab thickness. In addition, when the beam is arranged, the dancer becomes larger in proportion to the span length, so that the bed height is increased and the construction cost such as the addition of formwork and reinforcing bars is increased.

In order to solve such a structural problem, a slab and a beam structure which are light in weight, have a small slab thickness and beam dancing, are large in bending stiffness, and are structurally stable in a long span are required. For this purpose, joist slabs, waffle slabs, or hollow core slabs have been proposed and applied in some cases.

However, the joist slab, the waffle slab, the hollow core slab, and the like are not widely used.

This is because the structure is complicated during the construction of the site, which requires a lot of work and special formwork, which is disadvantageous in terms of cost compared to other structures.

Particularly, in the case of hollow core slab, separate measures are needed to prevent buoyancy acting on the lightweight molding material when concrete is poured.

1 is a photograph of a conventional anti-buoyancy device. Conventional buoyancy prevention device applied to a hollow core slab is an anchor for preventing buoyancy on a mold as shown in FIG. 1, and the process is complicated because it is installed and disassembled from a lower part of a formwork. In the case of an unskilled worker It does not guarantee safety and quality (Patent No. 1019588).

In order to solve these problems, the present inventor has developed and patented a hollow slab method for easily fixing a lightweight molding material to a T-shaped deck plate (Patent No. 77990, No. 0936593).

Fig. 2 is a drawing of the conventional patent No. 936593, which has been successfully put to practical use.

However, the above-mentioned U.S. Patent No. 936593 shows that the fixed key is increased in size and fixed number in proportion to the fixing force, and the fixed key is made into the eps in some cases for economic reasons. There is a difficulty.

Further, the above-described invention has a disadvantage in that it is limited to a T-shaped deck plate.

Accordingly, the inventor of the present invention has developed a method for economically and effectively preventing buoyancy acting on a lightweight molding material, which is applicable to most deck plates used in the past.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the related art. The purpose is as follows.

First, it is intended to provide a one-touch buoyancy prevention device for a hollow slab which is applicable to a large number of deck plates for both formwork and non-structural use, instead of a timber formwork.

Second, it is intended to provide a one-touch type buoyancy prevention device of a hollow slab which can be operated in a one-touch manner at the upper part of a deck plate, so that even unskilled workers can easily and safely and economically construct the hollow slab.

Third, it is desired to provide a buoyancy prevention device capable of easily installing a hollow slab, a joist slab, and a waffle slab in the field, as the case may be.

Fourth, it is intended to provide a one-touch type buoyancy prevention device of a hollow slab which is simple in structure and can be directly applied without any design change.

According to an aspect of the present invention, there is provided an apparatus for preventing floating of a lightweight molding material of a hollow slab,

A main body provided with an engaging portion at the upper end thereof, a protrusion at the lower end thereof, and an anchor at the lower end thereof, which is rotated around the pin to engage under the deck plate; A box or cylinder having an upper hole and a lower hole formed in an upper part of the deck plate and a lower part of the body and a lower part of the body, And an elastic body having an elastic force inside the fixture and having upper and lower ends respectively positioned on the lower and lower holes of the protrusion,

When the lower end of the main body and the anchor are partially exposed to the deck plate hole of the deck plate and the main body moves downward under pressure from the upper portion, the anchor rotates around the pin by the eccentricity of the center of gravity, Wherein the binding portion binds the lightweight molding material or binds the reinforcing bars pressing the lightweight molding material at the upper portion to prevent floating of the lightweight molding material when the slab concrete is poured.

According to the present invention, the following effects are expected.

First, it can be applied to a large number of form deck plates used for structural or non-structural purposes instead of wood formwork, and thus the application range is various.

Second, since it is possible to work with the one-touch type from the upper part of the deck plate, the unskilled worker can easily, safely and economically construct.

Third, it is possible to easily construct hollow slabs, as well as joist slabs and waffle slabs, on site.

Fourth, since the structure is simple, it can be applied immediately without any modification of design, which improves workability.

1 is a photograph of a conventional anti-buoyancy device.
Fig. 2 is a view of a conventional patent No. 936593. Fig.
3 is a first embodiment of a one-touch type buoyancy prevention device for a hollow slab of the present invention.
4 is a second embodiment of a one-touch buoyancy prevention device for a hollow slab of the present invention.
Fig. 5 shows a hanger incorporated in a second embodiment of the one-touch type buoyancy prevention device of the hollow slab of the present invention.
FIGS. 6 and 7 illustrate how the present invention is applied to a T-shaped deck plate.
Figs. 8 and 9 show a state in which the present invention is applied to a general deck plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a first embodiment of a one-touch type buoyancy prevention device for a hollow slab of the present invention.

The first embodiment of the one-touch type buoyancy prevention device of the hollow slab of the present invention is an apparatus for preventing the floating of the lightweight molding material (V) of the hollow slab,

A main body 100 provided with an engaging portion 101 at an upper end thereof and a protrusion 102 at a lower end thereof and an anchor 103 which is rotatable around a pin 104 at the lower end to be engaged with a lower portion of the deck plate D; The upper hole 201 and the lower hole 202 are formed in a box or a cylinder shape on the upper part of the deck plate D and the upper hole 201 and the lower hole 202, (200) to which the lower end of the main body (100) and the anchor (103) are partially exposed; And an elastic body 203 having an elastic force inside the fixture 200 so that the upper and lower ends thereof are positioned below the protrusions 201 and upper portions of the lower holes 202,

When the lower end of the main body 100 and the anchor 103 are partially exposed to the deck plate hole D1 of the deck plate D and the main body 100 moves downward under pressure from the upper portion, Is rotated about the pin (104) by the eccentricity of the center of gravity and is caught under the deck plate (D)

The binding portion 101 binds the lightweight molding material V or binds the reinforcing bar R1 pressing the lightweight molding material V at the upper portion to prevent the lightweight molding material V from being lifted when the slab concrete is poured. .

The main body 100 is provided with a binding part 101 at the upper end and a protrusion 102 at the lower end thereof and an anchor 103 which is mounted on the lower part of the deck plate D by rotating about the pin 104, It is preferable that the binding portion 101 is formed in a shape of "J" or "L" which is easy to be caught by the lightweight molding material V or the reinforcing bars R1. The anchor 103 can be any type of steel which is generally corrosion-resistant, but has rigidity such as reinforced plastic.

The fixture 200 is installed in the upper part of the deck plate D and is formed in a box or cylinder shape having an upper hole 201 and a lower hole 202 in the upper part and a lower part 202, A lower end of the main body 100 and an anchor 103 are partially exposed to the lower hole 202. [ The material is preferably plastics in view of economical efficiency and moldability, but it is also possible to use general steel

The elastic body 203 is installed such that the upper end and the lower end of the elastic body 203 are located at the upper portion of the lower and lower holes 202 of the protrusion 201, Anything that has good resilience is irrelevant.

3, the body 100 may be provided with an anti-tip 104a for preventing the anchor 103 from rotating by 180 degrees or more.

Although not shown in the first embodiment, as shown in FIG. 4 according to the second embodiment, a hanger joint portion 105 is formed at the lower end of the main body 100, so that the hanger H can be coupled.

The first embodiment of the one-touch type buoyancy prevention device for a hollow slab of the present invention is an example in which a rod-like anchor 103 is fixed by a pin 104 so as to be rotatable.

The anchor 103 is in a state in which the upper length is slightly longer than the lower length, that is, the eccentric state (the state in which the center of gravity and the rotation axis are not the same) is pinned and partially protruded in the lower hole 201. When the anchor 103 is completely protruded to the lower portion of the deck plate D by pushing the main body 100 from the upper portion to the deck plate hole D1, (b) the anchor 103 are rotated by 180 degrees and the state is maintained at a predetermined angle larger than the deck plate hole D1 without being parallel to the main body 100 by the anti-ballast tip 104a machined on the main body 100, (c) When the main body 100 is placed, the main body 100 is pulled up to the upper part by the restoring force of the elastic body 203, but the anchor 103, the deck plate D, do.

4 is a second embodiment of the one-touch type buoyancy prevention device of the hollow slab of the present invention

The second embodiment of the one-touch type buoyancy prevention device for a hollow slab of the present invention is characterized in that in the first embodiment, the anchor 103 is composed of a plurality of toggles 103a and 103b, And the toggle 103a and 103b are engaged with the underside of the deck plate D by being pivoted about the pin 104 by the eccentricity of the center of gravity.

A method of installing a buoyancy prevention device for a hollow slab according to a second embodiment of the present invention comprises the steps of: (a) aligning the lower portion of the main body 100 of the buoyancy prevention device of the present invention with a pre-fabricated deck plate hole D1; b) When the main body 100 is pushed from the upper part and the toggles 103a and 103b are completely projected to the lower portion of the deck plate D, the toggles 103a and 103b expand due to gravity, The body 100 is pulled up to the upper portion by the restoring force of the elastic body 203 when the body 100 is placed, The plate (D) and the fixture (200) are integrated with the main body (100). Thereafter, the main body 100 is no longer raised to the buoyancy prevention function.

Fig. 5 shows a hanger incorporated in a second embodiment of the one-touch type buoyancy prevention device of the hollow slab of the present invention. As shown in FIG. 5, a hanger engaging portion 105 is formed at the lower end of the main body 100, so that the hanger H can be engaged. The hanger coupling portion 105 is preferably of the male thread type as shown, but may be any coupling means that is commonly used to suspend ceiling materials, fixtures, and the like.

FIGS. 9 and 10 show a state in which the present invention is applied to a T-shaped deck plate. 9 and 10 are an exploded perspective view and a cross-sectional view, respectively, of an unidirectional hollow slab embodiment in which the buoyancy prevention device of the present invention is applied to a T-shaped deck plate (D).

As shown in the drawing, in the case of the T-shaped deck plate D, the lightweight molding material V can be prevented from sinking by providing the lightweight molding material V on the T-shaped rib D2, .

6 and 7, the buoyancy preventing device of the present invention is installed in the deck plate hole D1 at a predetermined interval, which is pre-machined or machined in the field, after the T-shaped deck plate D is mounted, (Not shown), a lightweight molding material V is placed at a predetermined position, the reinforcing rods R1 are positioned past the upper portion of the lightweight molding material assembly V, When the slab concrete C is installed after the other upper reinforcing bars R2 and R3 are installed and the lightweight molding material V is pressed upward, The hollow concrete lightweight slab is completed because the slab concrete C is not laid.

Figs. 8 and 9 show a state in which the present invention is applied to a general deck plate. 8 and 9 show an exploded perspective view and a cross-sectional view, respectively, of a unidirectional hollow slab embodiment, which is implemented by applying the buoyancy prevention device of the present invention to a generally used bore deck plate D, respectively. In the case of the bony deck plate (D), the lightweight molding material (V) can be prevented from sinking by providing the lightweight molding material (V) on the protruded portion.

The deck plate D to be applied in the present invention can be applied as it is without any modification of design, and it can be applied to the deck plate D by embossing (increasing adhesion with slab concrete), dovetail And a deck plate D provided with a door and a door. In addition, as for the lower reinforcing bars (not shown) of the slab and the upper reinforcing bars (R3) of the slab, it is also possible to use post-tensioning methods as well as conventional deformed reinforcing bars.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

It is therefore intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

D: Deck plate
D1: Deck plate hole
D2: T-shaped rib
R1: Rebar
R2, R3: Upper reinforcing bar
C: Slab Concrete
H: Hanger
100:
101:
102: projection
103: Anchor
103a, 103b: a toggle
104: pin
104a: tip for preventing equilibrium
105: hanger coupling part
200: Fixture
201: upper hole
202: Lower hole
203: elastic body

Claims (5)

As an apparatus for preventing the floating of the lightweight molding material (V) of the hollow slab,
A main body 100 provided with an engaging portion 101 at an upper end thereof and a protrusion 102 at a lower end thereof and an anchor 103 which is rotatable around a pin 104 at the lower end to be engaged with a lower portion of the deck plate D;
The upper hole 201 and the lower hole 202 are formed in a box or a cylinder shape on the upper part of the deck plate D and the upper hole 201 and the lower hole 202, (200) to which the lower end of the main body (100) and the anchor (103) are partially exposed; And
An elastic body 203 having an elastic force inside the fixture 200 so that the upper and lower ends of the elastic body 203 are positioned at the lower portion of the protrusion 201 and the upper portion of the lower hole 202, respectively;
, ≪ / RTI >
When the lower end of the main body 100 and the anchor 103 are partially exposed to the deck plate hole D1 of the deck plate D and the main body 100 moves downward under pressure from the upper portion, Is rotated about the pin (104) by the eccentricity of the center of gravity and is caught under the deck plate (D)
The binding portion 101 binds the lightweight molding material V or binds the reinforcing bar R1 pressing the lightweight molding material V at the upper portion to prevent the lightweight molding material V from being lifted when the slab concrete is poured. Wherein the buoyancy preventing device is a one-touch type buoyancy preventing device for a hollow slab. The method of claim 1,
Wherein the main body (100) is formed with a tip (104a) for preventing the rotation of the anchor (103) from rotating by 180 degrees or more. 3. The method according to claim 1 or 2,
Wherein a hanger engaging portion (105) is formed at a lower end of the main body (100) to engage the hanger (H). The method of claim 1,
The anchor 103 is composed of a plurality of toggles 103a and 103b,
The ends of the toggles 103a and 103b are engaged by the pins 104 so that the toggles 103a and 103b are rotated about the pins 104 by the eccentricity of the center of gravity, (D) of the hollow slab. 5. The method of claim 4,
Wherein a hanger engaging portion (105) is formed at a lower end of the main body (100) to engage the hanger (H).
KR1020130064646A 2013-06-05 2013-06-05 One Touch Type Device For Preventing Buoyance In Hollow Core Slab KR20140142910A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180045135A (en) 2016-10-25 2018-05-04 (주)윈하이텍 Injury prevention and precision fixture of the hollow member to be used for hollow slabs
CN108643432A (en) * 2018-05-02 2018-10-12 成都建筑工程集团总公司 Electronic chip workshop wafer board structure construction engineering method
KR102623859B1 (en) * 2023-07-06 2024-01-11 주식회사 아이코닉엔지니어링 Modular unit for public building construction and public building construction method using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180045135A (en) 2016-10-25 2018-05-04 (주)윈하이텍 Injury prevention and precision fixture of the hollow member to be used for hollow slabs
CN108643432A (en) * 2018-05-02 2018-10-12 成都建筑工程集团总公司 Electronic chip workshop wafer board structure construction engineering method
KR102623859B1 (en) * 2023-07-06 2024-01-11 주식회사 아이코닉엔지니어링 Modular unit for public building construction and public building construction method using the same

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