KR20210101952A - Bending Spacer for Deck-Plate and Deck Plate Manufacturing Method using the Same - Google Patents

Abstract

The present invention relates to a bendable connector (S) for a deck plate and a deck plate manufacturing method (M) using the same. To achieve the purpose, the bendable connector for a deck plate, which is used to couple a truss girder with a deck panel such that the truss girder and the deck panel can be removed from each other, includes: a connector body having an upper side part provided such that a lower chord of the truss girder can be placed therein, and having a coupling hole formed by a predetermined height in the bottom such that a coupling means for fixing the deck panel can be coupled therewith; a channel type metal piece having first and second bending pieces exposed side by side to the upper part of the upper side part of the connector body such that the lower chord can be placed therebetween; and a coupling means coupled with the coupling hole of the connector body to tightly fix the deck panel. Accordingly, the first and second bending pieces of the channel type metal piece are bent to surround the lower chord to enhance a coupling force, and also, the bending pieces are welded with the lower chord in a surface contact state, and, as a result, a sufficient binding force can be secured.

Description

Connector for bent deck plate and deck plate manufacturing method using same {Bending Spacer for Deck-Plate and Deck Plate Manufacturing Method using the Same}

The present invention relates to a connector for a bent deck plate and a deck plate manufacturing method using the same, and more particularly, the first and second bent pieces are exposed side by side above the connector body, and a truss between the first and second bent pieces It relates to a connector for a bendable deck plate in which a lower chord of a girder is provided and the first and second bent pieces are bent and then welded, thereby improving workability and securing a strong bonding force, and a deck plate manufacturing method using the same.

In general, a reinforced concrete structure assembles a form for pouring concrete to construct a wall or slab, reinforcing reinforcing bars inside the form, pouring concrete, and demolding the form when curing of the concrete is completed as a load-bearing structure. to form walls or slabs.

However, in the conventional formwork method, in order to fix the formwork, it is necessary to assemble and bond the formwork together, and additionally construct a temporary material to support the concrete load. There was the inconvenience of requiring a large number of labor force.

In order to solve this problem, recently, the assembled reinforcing bar is replaced with a truss girder manufactured in a factory, and the truss girder is bound to the truss girder through a connector to facilitate mutual separation to improve the workability, as well as the recycling of the formwork in the future. Demolding deckle plates that can also be used are widely used.

As a related prior art document, there is the applicant's earlier application registration patent No. 1435004 "spacer for deck plate" (registration on August 21, 2014, hereinafter referred to as 'prior art literature'). The prior art document proposes a spacer integrally formed with a metal support part and a synthetic resin body part by insert injection, and a deck plate was manufactured by welding the lower chords of the truss girder seated on the metal support part.

The prior art document, as shown in Figure 1, by bending a pair of vertical parts (1a) to the metal support part (1) to form a multi-contact welding to increase the bonding force, the insertion hole (1b) in the bottom (1b) 1c) was formed to increase the fastening force during insert injection of the body part 2 .

However, in the prior art document, as the shape of the metal support part 1 was complicated, it was uneconomical to manufacture it, and above all, based on the pair of vertical parts 1a, welding and coupling with the lower chord of the truss girder. However, since the welding area is limited as the welding area is simply welded with the lower chord on the vertical part 1a, the welding homogeneity is secured differently depending on the degree of work of the welder, and above all, it is difficult to expect a strong bonding force. there was.

The present invention has been devised to solve the above problems, and by providing the lower chord of the truss girder between the metal pieces of the connector, stable seating is possible even before welding. It is possible to secure sufficient bonding strength by welding in a surface-contacted state, and to provide a connector for a bent-type deck plate that is easy to bend and deform a metal piece, thereby improving the manufacturing efficiency of the deck plate, and a deck plate manufacturing method using the same.

The connector (S) for a bent deck plate according to the present invention for achieving the above object is to bind the truss girder (TG) and the deck panel (P) to be mutually demoldable, and the lower part of the truss girder (TG) The upper surface part 11 is provided so that the current BR is seated, and the connector body 10 in which the fastening hole 12 is formed by a certain height so that the fastening means 30 for fixing the deck panel P is fastened to the lower surface. ); A channel-type metal piece ( 20); and a fastening means 30 that is fastened to the fastening hole 12 of the connector body 10 to closely fix the deck panel P.

In addition, the channel-type metal piece 20 may be welded to the lower chord BR by bending the first and second bent pieces 21 and 22 so as to surround the lower chord BR.

In addition, the first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 are bent inducing portions 21a having relatively narrow widths at positions corresponding to each other. ) (22a) may be formed.

In addition, the first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 are bent inducing portions 21b having a relatively thin thickness w at positions corresponding to them, respectively. ) (22b) may be formed.

In addition, bending induction holes 21c and 22c may be formed at positions corresponding to the first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 .

On the other hand, the deck plate (DP) using the connector (S) for the bent deck plate of the present invention is such that the deck panel (P) can be demolded to the truss girder (TG) by the connector (S) for the bent deck plate. are bound

Furthermore, the manufacturing method (M) of the deck plate in which the deck panel (P) is bound to the truss girder (TG) to be demoldable by using the bent deck plate connector (S) of the present invention, the truss girder (TG) a connector arrangement step (S10) of providing a lower string (BR) between the first bent piece 21 and the second bent piece 22 of the channel-type metal piece 20 exposed upward of the connector body 10; a metal piece bending step (S20) of bending the first and second bent pieces 21 and 22 so as to surround the lower string (BR); A welding bonding step (S30) of applying a (+) electrode to the lower chord (BR) and applying a (-) electrode to the first and second bent pieces 21 and 22 to weld each other; and a deck panel fastening step (S40) of fastening the deck panel (P) in close contact by fastening the fastening means (30) to the fastening hole (12) formed on the bottom surface of the connector body (10).

According to the connector (S) for the bent deck plate of the present invention and the deck plate manufacturing method (M) using the same, the lower chord is provided between the first and second bent pieces of the channel-type metal piece formed to be exposed to the upper part of the connector body and welded By having a truss girder before, stable mounting is possible.

In addition, the first and second bent pieces of the channel-type metal piece may be bent and deformed to surround the lower chord to increase the fastening force, and sufficient bonding strength may be secured by welding in a surface contact state when welding the lower chord.

Furthermore, there is an advantage in that the manufacturing efficiency of the deck plate is improved by forming the bending guide part or the bending guide hole to facilitate the bending deformation of the channel-type metal piece.

1 is a cross-sectional view showing a deck plate having a spacer according to the prior art document.
2 and 3 are a perspective view and an exploded perspective view showing a deck plate having a connector according to an embodiment of the present invention.
4 is a perspective view illustrating a coupling relationship between a connector and a truss girder according to an embodiment of the present invention;
Figure 5 is an exploded perspective view showing a connector according to an embodiment of the present invention.
Figure 6 is a front view showing a binding method of the connector according to an embodiment of the present invention.
7 is a cross-sectional view illustrating a binding state of a connector according to an embodiment of the present invention.
8 is a perspective view showing a connector according to various embodiments of the present invention.
9 is a cross-sectional view showing a binding state of a connector according to another embodiment of the present invention.
Figure 10 is a block diagram showing a time-series deck plate manufacturing method according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail based on the details shown in the drawings.

The connector (S) for the bent deck plate of the present invention is to bind the deck panel (P) to the lower part of the truss girder (TG) constituting the deck plate (DP) as shown in FIG. , it is used to form slabs or walls of buildings where concrete is poured. In one embodiment, when the deck plate (DP) is used for the construction of the slab, a plurality of consecutively arranged so that both ends of the deck plate (DP) are mounted on the girder, and after the concrete is poured and curing is completed, the tech panel ( By demolding P), a finished slab is provided.

On the other hand, in the 'width direction' and 'length direction' defined in the present invention, the long axis direction of the truss girder 10 and the deck panel P is defined as the 'length direction', and the direction perpendicular thereto is defined as the 'width direction'. .

The deck plate (DP) of the present invention has a metal upper chord (TR) coupled to the upper part in the longitudinal direction around a metal lattice bar (LB) that is bent up and down in a wavy shape and extends in the longitudinal direction, and a metal lower chord ( BR) is joined in the longitudinal direction. However, as shown in FIGS. 2 and 3 , a pair of lattice bars LB are inclinedly coupled around the upper chord TR, and the lower chord BR is coupled to the lower portion of the lattice bar LB, respectively. Thus, it can be formed to have a triangular structure as a whole.

In addition, the deck panel (P) may be made of a steel sheet, preferably a galvanized steel sheet, a synthetic resin material, plywood, etc. to enable recycling. It is preferable to form a bent rib so as to ensure this.

On the other hand, when the truss girder TG is formed to have a pair of lower chords BR as shown in FIG. 4, the lower chords BR are spaced apart by a predetermined distance so that they can be seated independently. A pair of connectors (S) may be provided.

The connector (S) for the bent deck plate of the present invention is coupled to the lower chord (BR) of the truss girder (TG) as shown in FIG. To this end, the connector (S) is largely a connector body (10) formed through injection of a synthetic resin material, a channel-type metal piece (20) and the connector body (10) that are inserted into the injection box of the connector body (10) and are integrally formed. It is composed of a fastening means 30 provided so as to be fastened to the .

As confirmed in the exploded perspective view of FIG. 5 , the connector body 10 forming each connector S is provided with an upper surface 11 so that the lower chord BR of the truss girder TG is seated, and the deck has a bottom surface. The fastening hole 12 is formed by a predetermined height so that the fastening means 30 for fixing the panel P is fastened.

Although not shown in the drawing, a round groove may be formed in the upper surface portion 11 of the connector body 10 so that the lower string BR can be stably mounted, and a channel type metal piece 20 to be described later may be formed. Since the first and second bent pieces 21 and 22 are formed to be exposed upward, the lower chord BR is provided between the first and second bent pieces 21 and 22, so that the lower chord BR and the channel Even before the mold metal pieces 20 are mutually welded, the truss girder TG is provided on the plurality of connectors S, so that stable mounting is possible without separation and flow.

More specifically, in the channel-type metal piece 20, the first bent piece 21 and the second bent piece 22 are exposed in parallel above the upper surface 11 of the connector body 10, and a lower string ( BR), which functions to be provided, is inserted into the injection box of the connector body 10 and is integrally formed. At this time, the channel-type metal piece 20 is preferably formed by bending one metal piece so that both ends are vertically bent around the connection part 23 so that the first and second bent pieces 21 and 22 protrude upward. However, it is also possible to manufacture based on a plurality of separated metal pieces.

On the other hand, it is preferable that the guide hole 24 is formed in the center of the connecting part 23 so that the fastening hole 12 of the connector body 10 is continuous so that interference does not occur in the process of the fastening means 30 being fastened. do.

In addition, as shown in the front view showing the fastening principle of FIG. 6 , the channel-type metal piece 20 can be bent so that the first and second bent pieces 21 and 22 surround the lower string BR. have. As the first and second bent pieces 21 and 22 of the channel-type metal piece 20 are bent and deformed to surround the lower chord BR of the truss girder TG, the fastening force may be relatively increased.

Furthermore, as shown in FIG. 7, after bending and deforming the first and second bent pieces 21 and 22 of the channel-type metal piece 20 to surround the lower chord (BR), an additional welding bonding is performed, and the welding bonding is performed. When the first and second bent pieces 21 and 22 and the lower chord BR are welded in a surface contact state, sufficient bonding force can be secured.

When the first and second bent pieces 21 and 22 of the channel-type metal piece 20 and the lower chord BR of the truss girder TG are mutually welded together, a (+) electrode is applied to the lower chord BR. And, it is possible to provide a deck plate (DP) in which a strong bonding force is secured by applying a (-) electrode to the bent first and second bent pieces 21 and 22 formed in each connector S.

On the other hand, the fastening means 30 is configured to be fastened to the fastening hole 12 of the connector body 10 to closely fix the deck panel P, and the fastening hole 12 is formed with a female thread, and the The fastening means 30 is preferably formed with a male thread to correspond thereto, but in addition to screw fastening, various known fastening methods such as a hooking method may be applied.

In addition, as shown in Figure 8, the connector (S) for the bent deck plate of the present invention is based on the shape of the channel-type metal piece 20, and the first and second bent pieces 21 and 22 are more effectively bent and deformed. can be induced.

In an embodiment, as shown in (a) of FIG. 8 , the first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 are relative to the corresponding positions, respectively. As a result, the bending guide portions 21a and 22a having a narrow width w may be formed. Accordingly, in the manufacturing process of the tech plate (DP), the external force for bending the first and second bent pieces 21 and 22 is concentrated on the bending guide portions 21a and 22a to induce bending deformation. Manufacturing efficiency can be expected.

In another embodiment, as shown in (b) of FIG. 8 , the first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 are relative to the corresponding positions, respectively. As a result, bending guide portions 21b and 22b having a thin thickness w may be formed, and an external force for bending may be concentrated on the bending guide portions 21b and 22b to induce bending deformation.

In addition, as shown in (c) of FIG. 8 , bending guide holes are located at positions corresponding to the first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 , respectively. (21c) and (22c) may be formed. In this case, the bending guide holes 21c and 22c may have one or more longitudinal perforations or a plurality of perforations in the portion where the bending is induced, and may induce bending by relatively reducing the amount of material.

In addition, although not shown in the drawings, the first and second bent pieces 21 and 22 may be formed to have a sufficient length to overlap each other when bent and deformed to surround the lower chord BR. Thereafter, by applying a (+) electrode to the lower chord (BR) and applying a (-) electrode to the interlocking first and second bent pieces 21 and 22 at a time, it is possible to secure a strong bonding force, 1 and 2 are also welded between the bent pieces 21 and 22.

On the other hand, as shown in Fig. 8 (d), the ends of the first and second bent pieces 21 and 22 exposed from the connector body 10 of the channel-type metal piece 20 are bent inward or outward, respectively. After the engaging bent portions 21d and 22d are formed and the first and second bent pieces 21 and 22 exposed upward are bent to surround the lower chord BR, the engaging bent portions 21d and 22d are It is provided to abut, and may be bent and deformed to engage with each other by bending the engaging bent portions 21d and 22d in abutting state to one side as shown in FIG. 9 . Thereafter, by applying a (+) electrode to the lower chord (BR) and applying a (-) electrode to the first and second bent pieces 21 and 22 that are engaged at a time, it is possible to secure a strong bonding force.

In addition, although not shown, by organically combining the embodiments of (a) to (d) shown in FIG. 8 to induce bending deformation of the first and second bent pieces 21 and 22, or additional first and second It is also possible to form a bond between the bent pieces 21 and 22 .

On the other hand, the manufacturing method (M) of the deck plate in which the deck panel (P) is coupled to the truss girder (TG) to be demoldable using the above-described bent deck plate connector (S) is a connector as shown in FIG. It may include an arrangement step (S10), a metal piece bending step (S20), a welding bonding step (S30) and a deck panel fastening step (S40).

First, in the connector arrangement step (S10), the lower chord BR of the truss girder TG is exposed to the upper side of the connector body 10, and the first bent piece 21 and the second bent piece of the channel-type metal piece 20 are exposed. (22) is a step provided in between. First, after arranging the connector S at a predetermined position, the truss girder TG is provided, or, conversely, the truss girder TG is provided and the connector S is sequentially disposed on the lower chord BR.

The metal piece bending step (S20) performed thereafter is a step of bending the first and second bent pieces 21 and 22 so as to surround the lower string BR. 6, as the first and second bent pieces 21 and 22 of the channel-type metal piece 20 are bent and deformed to surround the lower chord BR of the truss girder TG, the fastening force is relatively reduced. can be increased

In the welding and bonding step (S30), which is performed after the bending of the metal piece (S20), a (+) electrode is applied to the lower chord (BR), and a (-) electrode is applied to the first and second bent pieces 21 and 22. It is a step of mutual welding by applying electrodes. Further, as shown in FIG. 7, based on the additional welding bonding of the channel-type metal piece 20, the first and second bent pieces 21 and 22 and the lower chord BR are welded in a surface contact state to obtain sufficient bonding strength. can be obtained

Accordingly, when the coupling of the truss girder (TG) and the connector (S) is completed, the deck panel fastening step (S40) proceeds, the deck panel fastening step (S40) is a fastening hole formed on the bottom surface of the connector body (10) (12) by fastening the fastening means 30 is a step of closely fixing the deck panel (P).

On the other hand, the deck panel fastening step (S40) may be performed before the above-described connector arrangement step (S10). That is, by fastening the connector (S) in advance to the fastening means (30) passing through the through hole formed in the deck panel (P), the truss girder (TG) to the connector (S) coupled in advance on the deck panel (P) ) It is also possible to provide a lower chord (BR).

The connector (S) for the bent deck plate according to the present invention described above and the deck plate manufacturing method (M) using the same are those of ordinary skill in the art to which the present invention pertains to change the technical spirit or essential features of the present invention It will be understood that the present invention may be implemented in other specific forms without not doing so.

Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the claims described below rather than the above detailed description, the meaning of the claims and All changes or modifications derived from the scope and the concept of equivalents should be construed as being included in the scope of the present invention.

DP: Deck plate TG: Truss girder
BR: Hyunjae Ha P: Deck panel
S: Connector 10: Connector body
11: Upper part 12: Fastening hole
20: channel type metal piece 21: first bent piece
22: second bent piece 23: connection part
24: guide ball 30: fastening means
M: Deck plate manufacturing method
S10: connector arrangement step S20: metal piece bending step
S30: welding joining step S40: deck panel fastening step

Claims (7)

In the connector (S) for the deck plate for binding the truss girder (TG) and the deck panel (P) to be mutually demoldable,
The upper surface part 11 is provided so that the lower chord BR of the truss girder TG is seated, and the fastening hole 12 is fixed to the lower surface so that the fastening means 30 for fixing the deck panel P is fastened. The connector body 10 formed by the height;
A channel-type metal piece ( 20); and
Fastening means 30 which is fastened to the fastening hole 12 of the connector body 10 and closely fixes the deck panel (P);
A connector for a bent deck plate, characterized in that it comprises a.
According to claim 1,
The channel-type metal piece 20 is a bent deck plate, characterized in that the first and second bent pieces 21 and 22 are bent to surround the lower chord (BR) and welded to the lower chord (BR). for connector.
3. The method of claim 1 or 2,
The first and second bent pieces 21 and 22 exposed upward of the upper surface 11 of the connector body 10 have a bending guide portion 21a having a relatively narrow width w at the corresponding positions, respectively. 22a) is a connector for a bent deck plate, characterized in that it is formed.
3. The method of claim 1 or 2,
The first and second bent pieces 21 and 22 exposed upwards of the upper surface 11 of the connector body 10 are bent inducing portions 21b ( 22b) is a connector for a bent deck plate, characterized in that it is formed.
3. The method of claim 1 or 2,
Bending, characterized in that bending guide holes 21c and 22c are formed at positions corresponding to the first and second bent pieces 21 and 22 exposed upward of the upper surface 11 of the connector body 10, respectively. Connection for the type deck plate.
A deck plate in which the deck panel (P) is bound to be demoldable to the truss girder (TG) by the connector (S) for the bent deck plate of claim 1.
In the manufacturing method (M) of the deck plate (DP) in which the deck panel (P) is coupled to the truss girder (TG) to be demoldable using the bent deck plate connector (S) of claim 1,
A connector having the lower chord BR of the truss girder TG between the first bent piece 21 and the second bent piece 22 of the channel-type metal piece 20 exposed upward of the connector body 10 . arrangement step (S10);
a metal piece bending step (S20) of bending the first and second bent pieces 21 and 22 so as to surround the lower string (BR);
A welding bonding step (S30) of applying a (+) electrode to the lower chord (BR) and applying a (-) electrode to the first and second bent pieces 21 and 22 to weld each other; and
Deck panel fastening step (S40) of fastening the deck panel (P) by fastening the fastening means 30 to the fastening hole 12 formed on the bottom surface of the connector body 10;
Deck plate manufacturing method comprising a.

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