KR20180132333A - Hollow core deck plate for preparing hollow core concrete slab and wall - Google Patents

Abstract

The present invention relates to a hollow deck plate to manufacture hollow concrete slab and wall. More specifically, the hollow deck plate comprises a truss deck plate, a hollow material, and a connection member between the deck plate and the hollow material. The hollow material is fixed and coupled to the connection member by one-touch. Both ends of the connection member are inserted and attached between upper main bars of a rebar truss of the deck plate. Accordingly, provided are effects of: (i) easily installing the hollow material in the truss deck plate; (ii) installing the hollow material between the deck plates by a hollow material fixing device in a construction site to secure a high hollow rate in a slab; (iii) reducing a construction period by 50% or more due to simple installation and assembly of the hollow member (not requiring bolting and welding in a site); and (iv) reducing construction costs due to reduction in total construct period in accordance with constructability and weight reduction.

Description

[0001] Hollow core deck plates for preparing hollow concrete slabs and walls [0002]

The present invention relates to a hollow deck plate for manufacturing a hollow concrete slab and a wall, and more particularly, to a hollow deck plate including a truss deck plate, a hollow member, and a connecting member of a deck plate and a hollow member.

In a building, a bottom plate, or slab, is a horizontal member that is essential for a person to live and live.

In a small-sized building, slabs are generally divided into a reasonable area by beams. However, in the case where a large space having a long span between columns is formed, the depth of the beam supporting the slab is increased, and the floor height is increased. Therefore, a lightweight slab with high resistance to vertical load is required without reducing the beam dynamics and increasing the floor height.

Joist slabs, waffle slabs, hollow core slabs, and the like are known as conventional slab structures satisfying these requirements.

The joist slab and the waffle slab have a disadvantage in that the shape of the hollow slab is complicated by the provision of a small beam having a low dancing density from one direction to the other direction. Construction of hollow parts is complex due to hollowing and lightening of parts which have almost no resistance to stress. Therefore, it is not suitable for the construction method which is the main purpose of reduction of labor force due to deterioration of labor skill and labor cost.

In order to solve this construction problem, many methods using Half-PC have been developed and widely used in foreign countries. However, in Korea, it has been applied very limitedly due to transportation and field problems due to roads and on-site circumstances.

Deck plates have been effectively commercialized in structural aspects from steel structures to non-reinforced and non-reinforced concrete structures. After that, reinforced truss deck plates and T-shaped deck plates have been developed, And it is widely used mainly for the steel structure and the like although the cost is considerably increased because the construction can be shortened due to the improvement of the workability and the labor saving.

However, the use of reinforced truss-type deck plate requires a large amount of slab concrete, and therefore, it is necessary to take measures against joints with hollow slabs. Therefore, a new structure Deck plate development is required.

In accordance with this development request, a hollow deck plate having a structure as shown in Japanese Patent Application Laid-Open No. 10-2011-0006803 has been created. As shown in the accompanying drawings (FIGS. 1 and 2) The tongue of the Ω-type die is inserted into the gap formed by the welding projections 22 between the steel wire truss lattice foot 18 and the lower die steel plate 20 to move the concrete removing die to the left or right, It is difficult to insert the foot 35 of the formwork into the gap formed by the welding projection 22, which is a main factor for lowering the working efficiency.

Korean Patent No. 10-1540206 discloses a structure in which a hollow member is included in a space between truss girders so that spacing retaining protrusions projected to both the left and right sides of the hollow member abut on each of the truss girders, The hollow deck plate disclosed in the above document has a problem that the hollow member directly contacts the lower die plate and the deck and the concrete are not integrated with each other, In the continuous slab, the cross section deficit of the compression side concrete in the secondary moment area is caused, and there is a possibility that problems such as the damage of the entire member and the strong success of the winning streak may occur. In addition, when the deck plate is continuously assembled at the work site, there is a problem that the hollow member can not be installed at the connecting portion, resulting in a very low hollow ratio.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a truss deck plate capable of easily installing hollow trusses on a truss deck plate, (ii) (Iii) Hollow material can be installed between the deck plate and the deck plate at the site of construction by means of the hollow material fixing device, and a high hollow ratio can be secured in the slab, (iv) a very simple hollow material installation and assembly (V) a new type of hollow deck plate that can reduce the construction cost by 50% or more (no need for on-site bolting and field welding), and (v) It is an object of the present invention to provide the present invention.

In order to accomplish the above object, the present invention provides a hollow deck plate including a truss deck plate, a hollow member, and a connecting member between the deck plate and the hollow member, wherein the hollow member is fixedly connected to the connecting member by one- The connecting member is provided with a hollow deck plate having both ends thereof fitted and interposed between the reinforcing trusses of the deck plate.

According to the present invention, it is possible to provide a hollow deck plate exhibiting the following effects:

(i) the hollow member can be coupled to the truss deck plate with a very simple one-touch using a connecting member,

(iii) hollow members can be installed between the deck plate and the deck plate at the site of construction by means of the hollow re-connecting member, thereby enabling a high hollow ratio to be secured in the slab,

(iv) It is possible to shorten construction period by more than 50% due to very easy hollow installation and assembly (no on-site bolting and field welding required)

(v) Reduction of construction cost by shortening overall construction period due to construction workability and lighter weight.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a truss hollow deck plate according to an embodiment of the present invention, and Figs. 2 (a) and 2 (b)
FIG. 2 is a schematic view showing a process of binding the hollow material to the connecting member in the present invention,
3 is a front view (a) and a plan view (b, cd) of a connecting member used for connecting a hollow member and a truss deck plate in the present invention,
4 is a schematic view showing a final shape of the hollow deck plate according to the present invention,
5 is a sectional view of a hollow slab produced by casting concrete in a hollow deck plate according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In order to clearly explain the present invention, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification, and detailed configuration directions will be described with reference to the drawings. Also, throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements, unless specifically stated otherwise.

To solve the above-described problems of the conventional hollow deck plate, the present inventors have found that the hollow deck plate can be easily bonded to the deck plate and can achieve a high hollow ratio in the hollow slab. As a result of repeated researches, it has been developed a connecting member capable of binding a hollow material by a simple one-touch fastening and by using this, it is possible to provide a hollow deck plate in which a hollow material is very easily bonded. .

Accordingly, the present invention is a hollow deck plate including a truss deck plate, a hollow member, and a connecting member of the deck plate and the hollow member, wherein the hollow member is fixedly coupled to the connecting member at one- Disclosed is a hollow deck plate which is fitted and interposed between upper main rods of a reinforcing truss of a deck plate. Hereinafter, a hollow deck plate according to an embodiment of the present invention will be described in detail.

1 is a sectional view (a) showing a truss hollow deck plate according to an embodiment of the present invention, and a perspective view (b) showing a state in which a connecting member is fitted to a truss deck plate.

Referring to FIG. 1A, a truss hollow deck according to an embodiment of the present invention includes a truss deck plate 110 having a truss girder installed therein; A hollow member 120 installed to form a hollow in the slab after concrete pouring; And a connecting member 130 connecting the hollow member 120 and the truss deck plate 110 and fixing the hollow member 120.

The truss deck plate 110 includes a lower plate 111, a truss girder 112 and an upper main shaft 113 extending in the longitudinal direction inside the ridge tips of the truss girder 112. If necessary, reinforcement rods may be welded to the middle portion or the lower portion of the truss girder 112 to provide the lower portion 114 in the longitudinal direction, but this is not essential. The lower plate 111 forms a lower surface of the slab and functions as a mold to cope with deflection acting on the slab if necessary. The truss girder 112 is disposed above the lower plate 111 at regular intervals And serves to reinforce the flexural strength of the lower plate 111. [

As long as the truss deck plate 110 includes the lower plate 111, the truss girder 112 and the upper main shaft 113, the shape, size, and raw materials thereof are not particularly limited, Any truss deck plate in use can be applied without limitation.

The hollow member 120 includes a hollow member body 121 and a binding portion 122.

The hollow body 121 and the binding portion 122 may be integrally formed or the hollow body 121 and the binding portion 122 may be separately manufactured and then joined together according to a certain method. Preferably, the hollow body 121 and the binding portion 122 are integrally formed. The shape and size of the hollow body 121 are not limited to those shown in the drawings of the present invention and can be modified as much as required according to the sectional design conditions and the desired hollow ratio.

2 is a schematic view showing a process of binding the hollow material to the connecting member in the present invention.

2, the binding part 122 includes a bending groove 122a in detail and is divided into a binding part upper part 122b and a binding part lower part 122c with reference to the bending groove 122a. .

The binding part 122 of the hollow material binds the hollow main body 121 and the connecting member 130 to prevent the hollow material from moving or floating during the pouring operation of the concrete. The upper part 122b of the binding part of the present invention is a part exposed on the connecting member 130 after the hollow material 120 is bonded to the binding groove 132 of the connecting member 130, The shape and thickness of the hollow slab can be suitably adjusted by a person skilled in the art.

Meanwhile, it is preferable that the width of the binding part 122 is narrowed to the inside of the folding groove 122a, and then the width of the binding part 122 gradually increases as it goes down to the lower part 122c of the binding part. It is preferable that the bent groove 122a has a structure capable of accurately engaging with the projecting portion 133 of the connecting member 130 to be described later. Therefore, even if the hollow member 120 is very tightly coupled with the connecting member 130 to pour concrete after the binding member 122 of the hollow member is coupled to the binding groove 132 of the connecting member 130, So that the ash 120 does not move or float.

On the other hand, since the both ends of the binding portion lower portion 122c of the hollow material are not connected to each other, when the pressure is applied from both sides, the width of the binding portion 122 can be reduced, When it disappears, it resiliently restores to its original position. The shape of the hollow re-bonded portion 122 is not limited to the shape shown in the drawings of the present invention and includes a binding portion 122b, And a lower portion 122c of the binding portion 122c which has a shape that widens again as it goes downward with respect to the bending groove 122a.

In the present invention, the hollow member 120 may be made of a galvanized steel sheet, a waste vinyl resin, a waste plastic, or the like, and may be made of a material capable of maintaining a certain shape even after concrete is poured, Any material can be used without limitation.

3 is a front view (a) and a plan view (b, c d) of a connecting member used to connect a hollow member and a truss deck plate in the present invention.

1 and 3, the connecting member 130 of the present invention includes a connecting portion 131, a binding groove 132, a protrusion 133, and a connecting groove 134, The hollow member 120 is coupled to the groove 132 and the connecting portion 131 and the connecting groove 134 of the connecting member are fitted and fixed to the upper main shaft 113 provided in the longitudinal direction of the truss deck plate 110, The hollow member 120 is connected to the truss deck plate 110 and fixed.

Therefore, it is preferable that the width? 1 of the connecting groove 134 of the connecting member 130 is equal to or slightly larger than the diameter of the upper main shaft 113. Most preferably, the width? 1 of the connection groove 134 may be the same as the diameter of the upper main shaft 113. The width? 2 of the connection groove 134 is sufficient to be able to be fitted and fixed to the upper main shaft 113. Preferably, the width of the connection groove 134 may be the same as the diameter of the upper main shaft 113.

4C and 4D, since the connecting portion 130 of the connecting member 130 is to be fitted to the upper main shaft 113 having a short width, It is preferable that the connecting portions 131 are mutually engaged with each other. FIG. 1B is a schematic view of the truss deck plate 110 according to the present invention in which the connecting member 130 is successively fitted to the upper main shaft 113 of the truss deck plate 110.

As shown in FIG. 3A, L3 represents the total length of the connecting member 130, and L4 represents the inner distance between the connecting grooves 134 of the connecting member 130. As shown in FIG. 1A, L 1 represents the outer distance between the upper main shafts 113 on both sides of the truss deck plate 110, and L 2 represents the inner distance between the upper main shafts 113 on both sides. L3 in the connecting member 130 is longer than L4 and the connecting member 130 is preferably formed to have the following length in order to firmly engage with the upper main shaft 113: (i) L3 is equal to L1 Or short; (ii) L4 may be equal to or shorter than L2. However, when L3 is shorter than L1, L4 is equal in length to L2, and when L4 is shorter than L2, L3 is equal in length to L1. Most preferably, L3 = L1> L4 = L2.

The binding groove 132 is a portion for binding the hollow portion 120 of the hollow member to be fixed to the binding portion 122 of the hollow member and is located at the center of the connecting member 130. However, the present invention is not limited thereto. The shape of the binding groove 132 is the same as that of the lower binding region 122c of the hollow material so that the binding portion 122 of the hollow material can be firmly fixed after binding to the binding groove 132 desirable. More specifically, the spacing between the side projections 133 corresponding to the entrance of the binding groove 132 is preferably the same as the inside distance of the side edges 112a of the hollow re-binding portion, for firm binding. It is preferable that the binding groove 132 has a shape gradually becoming wider as it goes down from the upper opening of the opening so that the lower portion 122c of the binding portion of the hollow material is in close contact with both sides of the binding groove 132 Do.

The protruding portion 133 of the connecting member forms an inlet of the binding groove 132 and is engaged with the bent groove 122a of the hollow binding reed 122. The hollow member 120 and the connecting member 130, the fastening groove 132 may be formed in a shape that can accurately engage with the bent groove 122a of the hollow re-fastened portion 122. [

Meanwhile, the connection member 130 may be formed in a shape having a slight warp at the center of the connection member 130. The flexure is bent in a direction opposite to the direction in which the inlet of the coupling groove 130 of the coupling member 130 is directed. When the downward pressure is applied to the binding groove 132 of the connecting member 130, the bending is unfolded to deform the connecting member 130 into a flat shape or a shape warped in the opposite direction. When the pressure disappears, Return to the correct position. However, when the binding portion 122 of the hollow material is tied to the binding groove 132 of the connecting member 130, the protruding portion 133 of the connecting member 130 contacts the bent groove 122a of the connecting member 130, So that the connecting member 130 can be maintained in a flat state. Before the binding member 122 of the hollow material is bound to the connecting member 130, since there is some warping, the entrance of the binding groove 132 of the connecting member 130 is opened. Therefore, the lower portion 122c of the binding portion of the hollow material can be easily introduced into the binding groove 132 of the connecting member.

The shape of the connecting member 130 is not limited to that shown in the drawings of the present invention and the shape of the connecting portion 131 existing at both ends of the connecting member 130 is also not particularly limited. In the embodiment of the present invention, the connecting member 130 of FIGS. 3C and 3D is applied.

The connecting member 130 of the present invention may be made of a galvanized steel sheet, a waste vinyl resin, a waste plastic, or the like, and any material that can exhibit a resilient restoration of a warp shape existing at the center of the connecting member may be used without limitation .

As described above, according to the present invention, the hollow member 120 can be connected with the truss deck plate 110 with a simple one-touch operation by using the connecting member 130, and the hollow member 120 can be floated when the concrete is poured. And it is very useful in that a separate device for preventing movement is not necessary.

Hereinafter, the use and function of the hollow deck plate according to the present invention will be described with reference to FIGS. 1, 2, and 4. FIG.

First, the upper main shaft 113 of the truss deck plate 110 is inserted into the connecting groove 134 of the connecting member 130, as shown in FIG. 1B. At this time, the connection member 130 is slightly bent in the same direction as the bending direction existing at the center of the connection member 130, so that the upper main shaft 113 is easily inserted into the connection groove 134 at both ends of the connection member 130 .

1, the coupling groove 130 of the coupling member 130 is exposed upward so that the hollow member 120 can be coupled to the truss deck plate 110 in the upward direction, The mounting direction of the member 130 is not limited to the direction shown in the embodiment of the present invention.

After the connecting member 130 is coupled to the truss deck plate 110 as described above, the hollow member 120 is coupled to the connecting member 130 as shown in FIG. At this time, the lower portion 122c of the binding portion 122 can be easily inserted into the binding groove 132 of the connecting member by applying pressure from both sides of the hollow re-binding portion 122. Once the lower portion 122c of the hollow re-binding portion 122 is inserted into the connecting member binding groove 132, the hollow re-binding portion 122 tries to return to its original shape by elastic recovery, When a pressure is applied to the connecting member 130 in the direction opposite to the bending direction of the member 130, the protruding portion 133 of the connecting member is engaged with the bending groove 122a of the hollow re-binding portion 122, 1a.

FIG. 4 is a schematic view showing a final shape of the truss hollow deck plate 100 according to the present invention manufactured by the above method.

Thereafter, the desired hollow slab or wall can be completed by placing the concrete in the fabricated truss hollow deck plate 100. FIG. 5 is a cross-sectional view of a hollow slab produced by placing concrete (C) in a truss hollow deck plate according to the present invention.

The preferred embodiments of the present invention have been described in detail with reference to the drawings. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are to be construed as being included within the scope of the present invention do.

100: Truss hollow deck plate 110: Truss deck plate
111: lower plate 112: truss girder
113: upper main muscle 114: lower main muscle
120: hollow member 121: hollow member body
122: hollow re-binding portion 122a: hollow re-binding portion bending groove
122b: upper portion of the hollow re-binding portion 122c: lower portion of the hollow re-binding portion
130: connecting member 131: connecting member connecting portion
132: connecting member fastening groove 133: connecting member protruding portion
134: connecting member connecting groove
L1: outer space of the upper main shaft 113 of the truss deck plate
L2: Inside space of the upper main shaft 113 of the truss deck plate
L3: length of the connecting member 131
L4: Gap between the side connecting grooves 134 of the connecting member
DELTA 1: width of the connecting member connecting groove 134
? 2: Width of the connection member connection groove 134

Claims (5)

A hollow deck plate comprising a truss deck plate, a hollow member, and a connecting member of the deck plate and the hollow member, wherein the hollow member is fixed to the connecting member by one-touch, and both ends of the hollow deck plate A hollow deck plate fitted and clamped between upper main bars. The hollow deck plate according to claim 1, wherein the connecting member is fixedly coupled to the hollow member by pressurization of an intermediate portion. The hollow deck plate according to claim 1, wherein the hollow deck plate does not require a floating preventing device of the hollow member. The hollow deck plate of claim 1, wherein the hollow deck plate is spaced apart from the lower plate of the deck plate. The hollow deck plate according to claim 1, wherein the hollow deck plate is joined to an upper portion or a lower portion of the connecting member.

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