KR101540649B1 - Steel Reinforcement Integrated Composite Structure with One-touch type Wire-mesh - Google Patents

Abstract

The present invention relates to a steel reinforcement-integrated composite structure using a wire mesh which has a structure capable of increasing rigidity of a slab while preventing deformation of the composite structure integrally moved by combining a steel beam and the slab. The steel beam comprises: an upper member buried in a slab concrete; a lower member exposed from a lower part of the slab concrete; and an intermediate member to connect the upper member and the lower member. The upper member comprises: a length member installed in a longitudinal direction of the steel beam; and a connection member installed in an underside of the length member connected to the intermediate member. The intermediate member has a holding surface to hold a deck plate to construct the slab concrete. A wire mesh is placed on the top of the deck plate and is installed to insert the length member of the upper member into an insertion groove formed on a fixing part of the wire mesh. The wire mesh has a lattice planar structure wherein a plurality of wires is longitudinally and transversely arranged. The fixing part operated by an elastic force is arranged in at least one among both ends of the transverse wires. The fixing part comprises: the insertion groove in which the length member is fitted to be fixated; a holding part to prevent a separation of the inserted length member from the insertion groove; and a guide part to guide the length member to be entered into the insertion groove.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel reinforced composite structure using a one-touch fixed grid wire,

The present invention relates to a composite structure that allows an effective section to be achieved by combining a steel beam and a slab, and more specifically, to a composite structure capable of increasing the rigidity of the slab while preventing deformation of the composite structure. The present invention relates to a reinforced concrete composite structure using a grid wire having a structure of a steel reinforced concrete structure.

A variety of structural systems related to composite beams that are advantageous in terms of flexural load, vibration resistance, and impact resistance have been studied by synthesizing the advantages of steel and reinforced concrete, while saving materials.

The above composite view is generally divided into a buried composite beam that completely encloses the steel beam with concrete and an exposed composite beam that connects the steel beam to the slab concrete with the beam in a state where the beam is not combined and the present invention is applied to the latter exposed composite beam It can be said that it is applicable.

1 shows a cross section of a structure of a general exposed composite beam. As shown in FIG. 1, in the conventional composite view, stud bolts 2, which are shear connection members, are welded to the upper flange 1a of the H-shaped steel beam 1 at regular intervals and a deck plate or a die After the installation, the slab concrete 3 is laid so that the H-shaped beam 1 and the slab concrete 3 function as T-shaped composite beams.

The behavior of these composite beams is greatly influenced by the shear connectors installed between steel and reinforced concrete. Therefore, the stud bolts 2 should be sufficiently installed at a more closely spaced spacing, which, on the other hand, causes complications in construction. In addition, since the stud bolt (2) functions only as a shear connection member, the slab concrete must have a large thickness so as to resist bending strength, particularly compressive stress, and a separate cast iron rope must be laid.

Another conventional technique has a structure in which the upper flange of the steel beam is embedded in the slab concrete in order to have a more clear composite structure of the steel beam and the slab concrete. However, in such a structure, in order to solve the problem that the amount of steel is unnecessarily increased and thus the composite force with the concrete becomes insufficient due to the feature of the plate member of the upper flange, And it is another hassle to form a plurality of holes that can be circulated.

As shown in FIG. 2, the applicant of the present invention has proposed a steel reinforced concrete composite beam system that can function as a shear connection member while serving as a main part of a slab concrete as a part of a steel beam to be combined with a slab concrete, Patent Application No. 10-2014- 150935 (unpublished).

The above-described reinforcing bar integrated composite beam system is a structure for allowing the upper member of a steel beam composed of an upper member, a lower member and an intermediate member connecting them to be embedded in the slab concrete, and has a very high degree of composite force for the slab concrete, The upper member is composed of an upper reinforcing bar disposed in the longitudinal direction of the steel beam and a truss-shaped reinforcing bar.

In addition, the intermediate member of the steel beam enables the deck plate to be mounted, thereby realizing a slim floor.

In addition, a grid wire is provided between the upper reinforcing bar and the upper reinforcing bar as an upper part of the deck plate to prevent the lateral buckling of the upper member from occurring, thereby enabling a precise construction of high quality composite structure to be built. A hook is formed at an end portion of the end portion of the wire which meets the upper end of the reinforcing bar and the upper end of the reinforcing bar is fitted to the hook so that the upper reinforcing bar is not easily deformed even if a lateral load is applied thereto.

However, the structure in which the upper reinforcing bars are inserted into the hooks as described above can surely secure the position fixability of the upper reinforcing bars. However, there is a problem that the workability is poor due to the complicated fitting operation. There is a problem that the air is delayed and the labor cost is increased due to the inefficient operation of installing a lot of spacers between the deck plate and the grid wire in order to prevent it.

KR 10-0995459 B1 KR 20-2011-0004740 U KR 10-1249600 B1

It is an object of the present invention to solve the problems of the prior art described above and to solve the problem of the long member which is vulnerable to deformation such as lateral buckling while using a steel beam whose upper member embedded in the slab concrete is made of a long member such as a reinforcing bar So that it can be fixed to the same length member of the steel beam by a one-touch operation, thereby making it possible to reduce the amount of steel used and increase the composite force, as well as to improve the workability and shorten the air. The purpose is to provide.

Another object of the present invention is to provide a reinforced bar integral type composite structure in which a support portion integrally formed with a grid wire can be formed so as to omit installation of a spacer or simplify installation work of spacers.

According to a most preferred embodiment of the present invention for solving the above problems, there is provided a composite structure in which a slab concrete and a steel beam integrally behave, wherein the steel material comprises an upper member embedded in the slab concrete, The upper member includes a longitudinal member provided in the longitudinal direction of the steel beam, and an intermediate member provided on the lower surface of the longitudinal member and connected to the intermediate member And a deck plate for mounting the slab concrete is mounted on the intermediate member, and a grid wire fixedly installed between the long member and the long member is disposed on the deck plate, A grid wire is installed in the insertion groove of the fixing part so that the length member of the upper member is inserted A reinforcing bar integral type composite structure using a one-touch fixed grid wire is provided.

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At this time, the grid wire has a grid-like planar structure in which a plurality of wire wires are disposed in the longitudinal direction and the transverse direction, respectively, and at least one of both ends of the lateral wire is provided with a fixing part operated by an elastic force The fixing portion includes an insertion groove in which the length member is inserted and fixed, a latch portion for preventing the inserted length member from being separated from the insertion groove, and a guide portion for guiding the insertion of the length member into the insertion groove.

The composite structure according to the present invention is configured such that the upper member of the steel beam has a large open space in which the concrete can flow freely, while preventing deformation such as lateral buckling, reducing the amount of steel used, It is possible to omit the work of laying up the main steel rope at the upper part, thereby making it possible to economically construct such as shortening the air.

Further, in the composite structure according to the present invention, since the deck plate for constructing the slab is mounted on the intermediate member of the steel beam, it is possible to realize a slim floor.

In addition, since the fixing member of the grid wire consisting of the insertion groove, the engaging portion and the guide portion of the present invention is inserted and fixed in the insertion groove by the one-touch operation of pushing the body of the grid wire downward, the workability becomes very good, It can greatly reduce the space.

In addition, since the composite structure according to the present invention allows the support portion to be integrally formed on the grid wire or the spacer can be installed efficiently and stably, the installation work of the spacer for preventing the sagging of the grid wire can be omitted, And enables precise construction.

1 is a cross-sectional view showing a general composite structure of a sleeve concrete and a steel beam.
2 is a perspective view showing a conventional reinforcing bar integrated composite beam system proposed by the present applicant.
3 and 4 are perspective views showing embodiments of the grid wire according to the present invention.
5 is an explanatory view showing a process in which a length member is inserted and fixed in an insertion groove of a grid wire in a one-touch manner.
6 is an explanatory view showing a method of installing a grid wire according to an embodiment in which a hook is provided at one end of a grid wire of the present invention.
7 is a perspective view of a steel beam according to each of the embodiments to which the grid wire of the present invention is applied.
8 and 9 are perspective views for explaining a composite structure according to each embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in order to obscure or obscure the technical idea of the present invention due to the detailed description of the known structure in describing the present invention, the description of the structure of the above known structure will be omitted.

3 and 4 illustrate examples of the lattice wire 400 according to the present invention. Fig. 3 shows an example in which the fixing portion 411 is provided only on one side of the lattice wire 400, And an example in which the fixing portion 411 is provided on both sides of the wire 400 is shown.

3 and 4, the plurality of wire rods 410 and 420 are arranged in the longitudinal direction of the steel beam 100 and in the transverse direction perpendicular to the longitudinal direction of the steel beam 100, And at least one of both ends of the transverse wire 410 is provided with a fixing portion 411 which is operated by an elastic force.

The fixing portion 411 includes an insertion groove 411a through which a length member such as a reinforcing bar, a bar or a flat iron is fitted and fixed, a locking portion 411b protruding from the insertion groove 411a to prevent the inserted length member from being separated from the insertion groove 411a 411b and a guide portion 411c inclined downward to guide the length member into the insertion groove 411a.

The fixing portion 411 including the insertion groove 411a, the locking portion 411b and the guide portion 411c is formed by a one-touch operation in which the body of the grid wire 400 is pressed downwardly, So that it can be inserted and fixed in the hole 411a, thereby improving workability and precision.

5 illustrates a process in which a length member, for example, a reinforcing bar S is fixed to the insertion groove 411a in a one-touch manner. 5B, when the reinforcing bars S are placed on the lower portion of the guide portion 411c as shown in FIG. 5A, the body of the grid wire 400 is pressed downward as shown in FIG. 5B 5 (c), when the main surface latching part 411b is widened outward and the reinforcing bar S is inserted into the insertion groove 411a and the reinforcing bar S is inserted into the insertion groove 411a, So that the reinforcing bars S inserted from the insertion grooves 411a are prevented from being released.

3, the fixing portion 411 may be provided only at one end of the transverse wire 410 and the hook 412 may be provided at the other side of the transverse wire 410. As shown in Fig. 4, The fixing part 411 of the one-touch type described above can be provided for both end portions as well.

As shown in Fig. 3, when the one-touch fixing portion 411 is provided at one end of the transverse wire 410 and the hook 412 is provided at the other end thereof, The reinforcing bars S are fitted to the hooks 412 with respect to the ends of the lattice wires 400 on the side where the hooks 412 are provided, The both ends of the grid wire 400 are fixed so as not to be separated from the reinforcing bar S.

As shown in FIG. 4, even when the fixing portions 411 are provided at both ends, the reinforcing bars are inserted into the insertion grooves 411a of the fixing portions 411, 411, the same effects as those of the case where the hook 412 is provided on one side of the grid wire 400 are shown.

Since the direction of the work can be arbitrarily selected according to the site conditions if the fixing portion 411 is provided for both the ends, the advantage that the work can be made easier than the one having the fixing portion 411 is provided have.

As described above, the lattice wire 400 of the present invention having the one-touch type fixing portion 411 has a structure in which the upper member 110 is joined to the slab concrete by the steel beam 400, And an upper reinforcing bar 111 installed on the lower surface of the upper reinforcing bar 111 to form a large space for allowing the concrete to flow therethrough, The structure of the beam 100 is advantageously applied.

Of course, the present invention is also sufficiently applicable to a steel beam having a structure in which the structures of the upper reinforcing bar 111 and the abdominal reinforcing bars 112 are replaced by a connecting member and a long member having a different sectional shape such as a steel bar or a flat steel . Here, for convenience of explanation, it is assumed that the length member of the upper member 110 and the connecting member are both made of reinforcing bars.

7 is a perspective view showing the entire steel beam 100 in which the grid wire 400 of the present invention is advantageously installed.

The steel beam 100 includes an upper member 110 embedded in the slab concrete, a lower member 120 exposed in the lower portion of the slab concrete, and a middle member connecting the upper member 110 and the lower member 120. [ Member 130 as shown in FIG.

The upper member 110 includes an upper reinforcing bar 111 and a lower reinforcing bar 112 attached to a lower surface of the upper reinforcing bar 111 and connected to the intermediate member 130 as described above.

The upper member 110 constructed as described above is embedded in the slab concrete to have a very strong composite force between the steel beam and the slab concrete and a reinforced concrete structure together with the slab concrete to have a sufficient resistance against the compressive force .

The intermediate member 130 not only integrates the upper member 110 embedded in the concrete and the lower member 120 exposed to the outside but also has the unity of the deck plates 200 and 300 for constructing the slab concrete 131 to enable the implementation of a slim floor.

And the lower member 120 having a frustoconical cross section is resistant to tensile force by the lower flange of the steel and the abdominal plate.

7 (a), the steel beam 100 having the above-described structure may be formed in the shape of a general beam member having a linear shape with respect to the longitudinal direction. However, as shown in Fig. 7 (b) As shown in the figure, the camber (DELTA) may be formed so that the center portion of the steel beam 100 is convex upward.

The formation of the camber (?) Improves the resistance to bending moment generated at the center of the steel beam 100, thereby reducing the dancing of the steel beam 100. This reduces the amount of steel material used, (130) to contribute to the implementation of the slim floor.

The degree of the camber (?) May vary depending on the magnitude of the upper load supported by the steel beam 100, but it is preferably coincident with the degree of deflection caused by the load of the slab concrete.

When the installation of the deck plates 200 and 300 using the mounting surface 131 provided in the intermediate member 130 of the steel beam 100 is completed, the concrete is put on the deck plates 200 and 300 to complete the slab. The upper member 110 of the steel beam 100 exposed above the upper surface of the upper and lower plates 200 and 300 can be deformed due to carelessness of the operator and deformation such as lateral buckling is easily caused by the insertion pressure of the concrete These deformations reduce the degree of synthesis and the ability to resist stresses so that the finished composite structure is a poor quality factor that does not meet the design requirements.

The grid wire 400 of the present invention prevents the upper member 110 from being easily deformed by an external force as described above. That is, the lattice wire 400 of the present invention is placed on the deck plates 200 and 300 between the upper reinforcing bar 111 and the upper reinforcing bar 111, And the upper reinforcing bar 111 of the upper member 110 is inserted into the groove 411a.

The grid wire 400 installed between the upper reinforcing bars 111 and the upper reinforcing bars 111 maintains a gap between the upper reinforcing bars 111 like a tie bar so that the upper reinforcing bars 111 are transversely deformed ≪ / RTI >

The tie bar function of the lattice wire 400 described above is performed by inserting the insertion groove 411a of the fixing part 411 into which the upper reinforcing bar 111 is inserted to prevent the upper reinforcing bar 111 from being deformed to the inside of the lattice wire 400, The upper reinforcing bar 111 may be formed so as to be convex to the outside so that the upper reinforcing bar 111 is wrapped inside the lattice wire 400 so as to be inserted into the insertion groove 411a.

In the latter configuration in which the grid wire 400 envelopes the upper reinforcing bar 111 inside, even if a slight deformation occurs in the fixing portion 411 of the grid wire 400, In order to maintain the shape of the upper member 110 as well as to maintain the shape of the upper member 110, the stress generated in the grid wire 400 may be tensile stress so as to reduce the occurrence of deflection of the grid wire 400, .

8 is a sectional view of an embodiment of the present invention in which a grid wire 400 is installed after a U-shaped deck plate 200 having an upper flange is mounted on a steel beam 100 using the intermediate member 130 (A) shows a structure of a U-shaped deck plate 200 and a spacer 250 installed thereon, and (b) shows a structure of a U-shaped deck plate 200 according to one embodiment of the present invention And FIG.

The U-shaped deck plate 200 includes a lower plate 210, a side plate 220 vertically bent upward from both sides of the lower plate 210, an upper flange 230 bent horizontally from the upper end of the side plate 220, And a connecting plate 240 bent downward at an end of the upper flange 230.

Each of the side plates 220 and the connecting plate 240 is provided with a coupling groove K so as to be inwardly convex so as to be convex in the longitudinal direction so as to facilitate the installation of the spacer 250, 200 in the longitudinal direction. Embossing can also be applied to the lower plate 210 to increase the bending stiffness in the width direction or the longitudinal direction.

In the present embodiment, the spacers 250 for preventing such sagging are formed on the U-shaped deck plate (200) 200).

The spacer 250 includes a vertical piece 251 for maintaining a gap between the grid wire 400 and the U-shaped deck plate 200 and a vertical piece 251 for fixing the vertical piece 251 to the U-shaped deck plate 200 Shaped resilient support pieces 252 for supporting the support pieces 252. The support pieces 252 are provided with coupling protrusions P to be inserted into the engagement recesses K on both sides thereof. The vertical piece 251 may further include a through hole 251a for flowing concrete.

When the spacer 250 is pressed downward while being coupled to the upper flange 230 of the U-shaped deck plate 200, the engaging projections P provided on the receiving pieces 252 are elastically deformed into U- The installation work is very simple since it is inserted into the coupling groove K provided in the side plate 220 and the coupling plate 240 of the deck plate 200.

Since the coupling groove K is elongated in the longitudinal direction so that the spacer 250 installed therein can freely move back and forth in a state where the spacer 250 is inserted into the coupling groove K, The operation for correcting the error can be simplified easily.

9 (a) and 9 (b) show another embodiment of the plate-type deck plate 300 and the grid wire 400 for application thereto, respectively, for explaining the composite structure of another embodiment of the present invention (C) is a perspective view of the combined structure of another embodiment of the present invention to which the plate-type deck plate 300 and the grid wire 400 of the above structure are applied.

The plate type deck plate 300 includes a top plate 330 formed of a single flat plate, a side plate 320 bent downward at both ends of the top plate 330, And the lower plate 310 is mounted on the mounting surface 131 of the intermediate member 130. [

At this time, the horizontal and vertical wires 410 and 420 constituting the grid wire 400 are spaced apart from the top plate 330 of the plate-type deck plate 300 by a predetermined distance, thereby preventing the grid wire 400 from sagging. It is necessary to install spacers in order to maintain the spacing. However, there is a problem that installation of a general spacer causes an increase in delay and cost of air, which has been pointed out earlier. However, the spacer 250 of the foregoing embodiment composed of the vertical piece 251 and the resilient receiving piece 252 of the ∩ type can not be applied.

Therefore, in this embodiment, the grid 430 is provided with a supporting part 430, which functions as a spacer, to solve the above problems.

The support portion 430 is vertically formed in a lower portion of the planar structure formed by the longitudinal and transverse wire portions. More specifically, the support portion 430 is formed at regular intervals in the longitudinal direction and / Respectively. The support portion 430 may be formed only for the wire in one direction as shown in FIG. 9 (b), but the support portion 430 may be formed for both the longitudinal wire 420 and the lateral wire 410 May be selectively formed according to the standard of each wire constituting the grid wire 400 and the interval between the upper and lower reinforcing bars 111 and 111. [

The supporting part 430 may be integrally formed by bending the transverse wire 410 or the longitudinal wire 420. The supporting part 430 may be formed integrally by bending the transverse wire 410 or the longitudinal wire 420. However, A separate slit member may be welded to be provided on the grid wire 400. FIG.

The grid wire 400 having the support part 430 is fixed to the upper reinforcing bar 111 of the steel beam 100 by one-touch operation so that all operations related to the grid wire 400 are completed, It is possible to omit the work of installing spacers between the plate type deck plate 300 and the grid wire 400, so that it is possible to achieve a precise construction while greatly reducing air.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it will be possible to carry out various modifications thereof. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

100; Steel beam 110; The upper member
120; A lower member 130; Intermediate member
200: U-shaped deck plate 210, 310; Bottom plate
220, 320; Side plate 230; Upper flange
240; Connecting plate 250; Spacer
300; A flat plate deck plate 330; Top plate
400; Grid wire 410; Transverse wire
411; Fixing 412; Hook
420; Longitudinal wire

Claims (10)

delete delete delete delete In a composite structure in which a slab concrete and a steel beam behave integrally,
The steel beam 100 includes an upper member 110 embedded in the slab concrete, a lower member 120 exposed in the lower portion of the slab concrete, and an intermediate member 120 connecting the upper member 110 and the lower member 120. [ (130)
The upper member 110 includes a longitudinal member provided in the longitudinal direction of the steel beam 100 and a connecting member provided on the lower surface of the longitudinal member and connected to the intermediate member 130,
The intermediate member 130 is provided with a mounting surface 131 to mount a deck plate for constructing slab concrete,
A grid wire 400 fixedly installed between the long member and the long member is disposed on the deck plate. The grid wire 400 includes a plurality of wire members 410 and 420 arranged in the lateral direction and the longitudinal direction, respectively, And at least one of both ends of the transverse wire 410 is provided with a fixing portion 411 which is operated by an elastic force,
The fixing portion 411 includes an insertion groove 411a through which a length member is inserted and fixed, a locking portion 411b that prevents the inserted length member from being separated from the insertion groove 411a, And a guide part 411c for guiding the guide part 411a to enter the guide part 411a. When the body of the grid wire 400 is pushed downward in a state in which the length member is placed under the guide part 411c, ) Is inserted into the insertion groove (411a) so that the elongated member is inserted into the insertion groove (411a), and the reinforcing bar integral type composite structure using the one-touch fixed grid wire.
6. The reinforced bar integral type composite structure according to claim 5, wherein the steel beam (100) is formed with a camber (DELTA) having an upwardly convex central portion with respect to the longitudinal direction.
The deck plate according to claim 5, wherein the deck plate includes a lower plate (210), a side plate (220) vertically bent upward from both sides of the lower plate (210), an upper flange And a connecting plate 240 bent downward at an end of the upper flange 230. The side plate 220 and the connecting plate 240 are spaced apart from each other by a spacer 250, And a reinforcing bar integrated structure using the one-touch fastening grid wire.
6. The buckle according to claim 5, wherein the deck plate comprises: a top plate (330) having a single flat plate; a side plate (320) bent downward at both side ends of the top plate (330) Wherein the reinforcing member is a flat plate deck plate 300 formed of a bent lower plate 310 and the support member 430 is further provided on the lattice wire 400. [ 6. The one-touch fixed grid wire according to claim 5, wherein the transverse wire (410) is provided with a fixing portion (411) at one of both ends thereof and a hook (412) Composite structure of reinforced concrete.
[7] The composite structure of claim 1, further comprising a support portion (430) at a lower portion of the lattice-like planar structure.

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