WO2016129800A1 - Steel reinforcement integrated composite structure using one-touch fixing type wire mesh - Google Patents

Abstract

The present invention relates to a steel reinforcement integrated composite structure using a wire mesh, wherein the wire mesh includes a plurality of wires, each having a fixing part on at least one of both ends thereof, which is operated by elastic force, and the fixing part comprises: an insertion groove into which a length member is inserted and fixed; a locking part for preventing the inserted length member from being separated from the insertion groove; and a guide part for guiding the length member such that the length member can be introduced into the insertion groove.

Description

Reinforced one-piece composite structure using one-touch fixed grid wire

The present invention relates to a composite structure that enables efficient cross section by synthesizing the steel beam and the slab integrally, and more specifically, it is possible to increase the stiffness of the slab while preventing the deformation of the composite structure as described above. The present invention relates to a reinforcing bar composite structure using a lattice wire of a structure.

By combining the strengths of steel and reinforced concrete, various structural systems for composite beams, which are advantageous for flexural load, vibration resistance, and impact, while saving materials, have been studied.

Generally, the composite beam is divided into a buried composite beam completely enclosing the steel beam and concrete, and an exposed composite beam connecting the steel beam to the slab concrete as a shear connector without the composite of the beam. That can be said.

1 is a cross-sectional view showing the structure of a general exposed composite beam. As shown in FIG. 1, the conventional composite beam is installed by welding the stud bolts 2, which are shear connecting materials, at regular intervals on the upper flange 1a of the H-shaped steel beam 1, and attaching a deck plate or formwork to the upper flange. After installation, the slab concrete (3) is poured, so that the H-shaped steel beam (1) and the slab concrete (3) functions as a T-shaped composite beam.

The behavior of the composite beam is greatly influenced by the shear connector installed between the steel and the reinforced concrete. Therefore, the stud bolt (2) should be sufficiently installed at a tighter spacing, which, on the other hand, causes the trouble of construction. In addition, since the stud bolt 2 only serves as a shear connector, the slab concrete must have a large thickness to resist bending strength, in particular compressive stress, and a separate main reinforcing bar must be reinforced.

Another prior art may have a structure in which the upper flange of the cheolgolbo 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, the amount of steel is unnecessarily increased and it becomes uneconomical. In order to solve the problem of lack of synthetic strength with concrete due to the shape characteristic of the plate member of the upper flange, the concrete is placed on the upper flange. This creates another hassle that requires the formation of multiple holes for circulation.

Accordingly, the present applicant has applied for a partial reinforcing steel composite beam system that allows a part of the steel beam synthesized with the slab concrete to function as a shear connector while acting as a main root of the slab concrete, as shown in FIG. 2. It was filed in 150935 (unpublished).

The reinforced steel composite beam system is a structure in which the upper member of the steel beam consisting of the upper member and the lower member and the intermediate member connecting them to be embedded in the slab concrete, having a very high degree of synthetic force for the slab concrete, The upper member is composed of the upper reinforcement and the truss-shaped abdominal reinforcement is arranged in the longitudinal direction of the steel beam to play a role.

Along with this, the middle member of the steel beam allows the deck plate to be mounted so as to realize a slim floor.

In addition, by installing a grid iron wire between the upper reinforcement and the upper reinforcement as the upper portion of the deck plate to prevent the transverse buckling to occur in the upper member so that the high-quality composite structure can be constructed precisely, for this purpose A hook is formed at an end of the end of the iron wire which meets the upper reinforcing bar, and the upper bar is fitted to the hook so that the upper bar is not easily deformed even when a lateral load is applied.

However, the configuration in which the upper reinforcing bar is fitted to the hook as described above is to secure the position fixability of the upper reinforcing bar, but there is a problem in that workability is inferior due to the cumbersome work, and further sag in the inner part of the grid wire There is a problem in that air is delayed and labor costs are increased due to an inefficient operation in which many spacers are installed one by one between the deck plate and the grid wire to prevent them.

The present invention is to solve the problems of the prior art, while the upper member embedded in the slab concrete can solve the problem of the length member vulnerable to deformation such as transverse buckling while using the steel beam consisting of the length member such as rebar. By using one-touch, it can be fixed to the same length member of steel beams, thereby reducing the amount of steel used and increasing the composite strength, as well as improving the workability. The purpose is to provide.

In another aspect, the present invention has another object to provide a reinforcing bar integrated composite structure to form a support unit integral to the grid wire to omit the installation of the spacer, or to simplify the installation of the spacer.

According to the most preferred embodiment of the present invention for solving the above problems, in the composite structure in which the slab concrete and the steel beam integrally behaves, the steel beam, the upper member embedded in the slab concrete and the lower portion of the slab concrete Consists of an exposed lower member, and an intermediate member for connecting the upper member and the lower member, the upper member, the length member is installed in the longitudinal direction of the steel beam, the lower member of the length member is connected to the intermediate member It is made of a connecting member, the intermediate member is provided with a mounting plate is mounted deck plate for building the slab concrete, the grid plate is placed between the length member and the length member is fixed to the deck plate, the grid wire The grating wire is installed in the insertion groove provided in the fixing part so that the length member of the upper member is inserted. Provided is a one-piece composite structure using a one-touch fixed grid iron wire, characterized in that.

In this case, the grid iron wire has a plurality of iron wires arranged in the longitudinal direction and the horizontal direction, respectively, to have a grid-like planar structure, and at least one of both ends of the horizontal wire wire is provided with a fixing part operated by an elastic force. The fixing part includes an insertion groove into which the length member is inserted and fixed, a locking portion preventing the inserted length member from being separated from the insertion groove, and a guide portion leading the length member to enter the insertion groove.

Composite structure according to the present invention is configured so that the upper member of the steel beam has a large open space free of the flow of concrete, while preventing deformation such as transverse buckling, reducing the amount of steel used and the installation of shear connectors such as stud work and The upper reinforcing bar reinforcement work can be omitted, enabling economical construction such as shortening the air.

In addition, in the composite structure according to the present invention, the deck plate for building the slab is mounted on the intermediate member of the steel beam, thereby enabling the implementation of a slim floor.

In addition, the fixing groove of the grating wire consisting of the insertion groove, the locking portion, and the guide portion of the present invention, since the length member is fixedly inserted into the insertion groove by one-touch only pressing the body of the grating wire downward, the construction property becomes very good, and poor construction It allows you to greatly reduce the room.

In addition, the composite structure according to the present invention can be integrated into the support portion to the grid wire or to install the spacer efficiently and stably, so that the installation work of the spacer to prevent sagging of the grid wire is omitted or the installation time is shortened. In addition to making it possible to achieve precise construction.

1 is a cross-sectional view showing a general composite structure of the sleeve concrete and steel beams.

Figure 2 is a perspective view showing a conventional reinforced steel composite beam system proposed by the applicant.

3 and 4 are perspective views showing each embodiment of the grid iron wire according to the present invention.

5 is an explanatory view showing a process in which the length member is inserted and fixed to the insertion groove of the grid wire in a one-touch manner.

6 is an explanatory view showing a method for installing a grid wire according to an embodiment in which a hook is provided at one end of the grid wire of the present invention.

7 is a perspective view of the steel beam of each embodiment to which the grid iron wire of the present invention is applied.

8 and 9 are perspective views illustrating the composite structure according to each embodiment of the present invention.

The one-piece fixed composite composite structure using the one-touch fixed grid wire of the present invention is a single-piece composite composite structure using a grid wire of a structure that can increase the stiffness of the slab while preventing the deformation of the composite structure that behaves integrally by synthesizing the steel beam and the slab. Regarding the structure, the steel beam is composed of an upper member embedded in the slab concrete, a lower member exposed to the lower portion of the slab concrete, and an intermediate member connecting the upper member and the lower member, the upper member is a steel beam The length member is installed in the longitudinal direction of the, and the connecting member is installed on the bottom of the length member is connected to the intermediate member, the intermediate member is provided with a mounting surface is mounted deck plate for building slab concrete, the deck The grid wire is placed on the upper plate, the insertion provided in the fixed portion of the grid wire The groove is provided with a grid wire so that the length member of the upper member is inserted, and the grid wire has a plurality of wires arranged in the longitudinal direction and the transverse direction, respectively, to have a grid-like planar structure, and at least one of both ends of the horizontal wire Either side is provided with a fixing portion which is operated by an elastic force, the fixing portion is inserted into the length member is fixed, the engaging portion for preventing the inserted length member from being separated from the insertion groove, and the length member It consists of a guide to guide the entry into the insertion groove.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described in detail. However, in describing the present invention, when the technical concept of the present invention is obscured or obscured by describing the known configuration in detail, the description of the known configuration will be omitted.

3 and 4 show each embodiment of the grid iron wire 400 according to the present invention, Figure 3 is an example of the case where the fixing portion 411 is provided only on one side of the grid iron wire 400, Figure 4 is a grid The example in the case where the fixing part 411 is provided in both sides of the wire 400 is shown.

In the grid iron wire 400 according to the present invention, as shown in FIGS. 3 and 4, a plurality of iron wires 410 and 420 are disposed in the same longitudinal direction as the longitudinal direction of the steel beam 100 and the transverse direction perpendicular thereto. Although having a planar structure in shape, at least one of both ends of the transverse iron wire 410 is provided with a fixing portion 411 that is operated by an elastic force.

The fixing part 411 is an insertion groove 411a to which a length member such as rebar, bar or flat iron is inserted and fixed, and a locking part protruding to prevent the inserted length member from being separated from the insertion groove 411a. 411b) and the guide member 411c inclined downward to induce entry of the length member into the insertion groove 411a.

As described above, the fixing portion 411 including the insertion groove 411a, the locking portion 411b, and the guide portion 411c has a length member inserted groove by one-touch only pressing the body of the grid wire 400 downward. It can be inserted and fixed to the (411a) to improve the workability and precision.

FIG. 5 illustrates a process in which the length member, for example, the rebar S, is fixed to the insertion groove 411a in a one-touch manner. In the state where the reinforcing bar (S) is placed in the lower portion of the guide portion 411c as shown in (a) of Figure 5, pressing the body of the grid wire 400 as shown in Figure 5 (b) downwards When the main surface locking portion 411b is opened to the outside, the reinforcing bars S are inserted into the insertion groove 411a, and when the reinforcing bars S are inserted into the insertion grooves 411a, the locking portions 411b that are opened are shown in FIG. Resilient restoration as in the) to prevent the reinforcement (S) inserted from the insertion groove (411a) to be separated.

As shown in FIG. 3, the fixing part 411 may be provided only at one end of the transverse iron wire 410 and the hook 412 may be provided at the other side of the wire 410. Likewise, the one-touch fixing parts 411 described above may be provided at both ends.

As shown in FIG. 3, when one end of the transverse iron wire 410 is provided with a one-touch fixing part 411 and the other end is provided with a hook 412, as shown in FIG. 6. Regarding the end of the grating wire 400 on the side where the hook 412 is provided, the rebar S is first fitted to the hook 412, and then the body of the grating wire 400 on the side where the fixing part 411 is provided. Just press the both ends of the grid iron wire 400 is fixed so as not to be separated from the reinforcement (S).

Of course, even when the fixing portion 411 is provided for both ends, as shown in Figure 4 in the state in which the reinforcing bar first inserted into the insertion groove (411a) of one of the fixing portion (411) 411, the pressing grating wire 400 of the body portion provided with the same effect as the case where the hook 412 is provided on one side.

If the fixing part 411 is provided at both ends, the direction of the work can be arbitrarily selected according to the site conditions, so that the convenience of the work can be achieved as compared with the fixing part 411 on only one side. have.

As described above, the grid iron wire 400 of the present invention having the one-touch fixing part 411 has a structure of various steel beams which are synthesized for integral behavior with slab concrete, and the upper member 110 is a steel beam. Steel is formed to be embedded in the slab concrete consisting of the upper reinforcement 111 is installed in the longitudinal direction of the (100) and the abdominal reinforcement 112 is installed on the lower surface of the upper reinforcement 111 to form a large space for the concrete to flow It is advantageously applied to the structure of the beam 100.

Of course, the configuration of the upper reinforcement 111 and the abdominal reinforcement 112 is not useful for the steel beam of the structure in which the cross-sectional shape of the steel bar or flat iron, etc., respectively replaced with different length members and connecting members. . However, for convenience of description, the length member and the connection member of the upper member 110 will be described with an example in which all of them are made of rebar.

7 is a perspective view showing the steel beam 100 as a whole, the installation of the grid wire 400 of the present invention advantageously works.

The steel beam 100, the upper member 110 embedded in the slab concrete, the lower member 120 exposed to the lower portion of the slab concrete, and the intermediate connecting the upper member 110 and the lower member 120 Member 130.

In this case, as described above, the upper member 110 includes an upper reinforcement 111 and an abdominal reinforcement 112 installed on the lower surface of the upper reinforcement 111 and connected to the intermediate member 130.

The upper member 110 configured as described above is embedded in the slab concrete to have a very strong synthetic force between the steel beam and the slab concrete, and also to form a reinforced concrete structure with the slab concrete to have a sufficient resistance to the compressive force. .

In addition, the intermediate member 130 connects the upper member 110 embedded in the concrete and the lower member 120 exposed to the outside to have a unity, as well as mounting surfaces of the deck plates 200 and 300 for the construction of slab concrete ( It is possible to implement a slim floor by having a 131).

In addition, the lower member 120 having the X-shaped cross section by the lower flange and the abdominal plate of the steel is resistant to the tensile force.

Steel beam 100 having the structure as described above, as shown in Figure 7 (a) may be configured in the shape of a general beam member having a straight line with respect to the longitudinal direction, in Figure 7 (b) As shown, it may be configured to form a camber (△) with a central portion convex upward with respect to the longitudinal direction of the steel beam 100.

The formation of such a camber (△) improves the resistance to the bending moment generated in the center portion of the steel beam 100 to reduce the dancing of the steel beam 100, which reduces the steel consumption and the above-described intermediate member Together with the 130 will contribute to the implementation of the slim floor.

Although the degree of the camber (Δ) will vary depending on the size of the upper load supported by the steel beam 100, it is preferable to match the degree of deflection to be generated by the load of the slab concrete.

When the installation of the deck plates (200,300) using the mounting surface 131 provided on the intermediate member 130 of the steel beam 100 is completed, the slab is completed by pouring concrete on the deck plates (200,300), deck plate The upper member 110 of the steel beam 100 exposed to the upper surface than the upper surface of the (200,300) can not only be deformed by carelessness of the operator, but also deformation such as transverse buckling can be easily generated by the placing pressure of the concrete. These deformations can reduce the degree of planned synthesis and resistance to stress, resulting in low quality factors in which the finished composite structure does not meet design values.

The grid iron 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 grid iron wire 400 of the present invention is placed on the deck plate (200,300) between the upper reinforcing bar 111 and the upper reinforcing bar 111, the insertion provided in the fixing portion 411 of the grid wire 400 The groove 411a is installed to insert the upper reinforcing bar 111 of the upper member 110.

As such, the grid reinforcement wire 400 installed between the upper reinforcement 111 and the upper reinforcement 111 maintains the interval of the upper reinforcement 111 like a tie-bar so that the upper reinforcement 111 is horizontally deformed. To prevent them.

The tie bar function of the grid wire 400 is the insertion groove 411a of the fixing portion 411 into which the upper reinforcement 111 is inserted to prevent the upper reinforcement 111 from being deformed into the grid reinforcement wire 400. It may be formed to be convex inward from the end of the transverse iron wire 410, but more preferably formed so as to be convex outward, the upper reinforcement 111 is wrapped inside the lattice iron wire 400 is the insertion groove ( 411a).

The latter configuration in which the grid wire 400 surrounds the upper reinforcement 111 in this way, even if some deformation occurs in the fixing portion 411 of the grid wire 400 will not be easily released between them. In addition, the stress generated in the grid wire 400 to maintain the shape of the upper member 110 is to reduce the deflection of the grid wire 400 by the tensile stress to install the number of spacers or the number of supporting parts to be described later Have the effect of reducing

8 is an embodiment of the present invention installed the grid wire 400 after mounting the U-shaped deck plate 200 provided with the upper flange to the steel beam 100 by using the intermediate member 130 above. As to explain the composite structure by, (a) shows the structure of the U-deck plate 200 and the spacer 250 is installed therein, (b) is a synthesis of an embodiment of the present invention to which their structure is applied A perspective view showing the structure as a whole.

The U-shaped deck plate 200 is the lower plate 210, the side plate 220 bent vertically upward at both sides of the lower plate 210, the upper flange 230 which is horizontally bent at the upper end of the side plate 220 and The connection plate 240 is bent downward at the end of the upper flange 230.

In addition, each of the upper end of the side plate 220 and the connecting plate 240 is provided with a coupling groove (K) in the longitudinal direction so as to be convex inwardly to facilitate the installation of the spacer 250 as described later U-shaped deck plate ( Increase the bending rigidity in the longitudinal direction of the 200). Embossing may be formed with respect to the lower plate 210 in order to increase the bending rigidity in the width direction or the longitudinal direction.

The grid wire 400 installed on the upper portion of the U-shaped deck plate 200 is caused to sag in the center portion due to its own weight. In the present embodiment, the spacer 250 for preventing such sag is formed in the U-type deck plate ( 200).

The spacer 250 is a vertical piece 251 for maintaining the gap between the grid wire 400 and the U-shaped deck plate 200, and the vertical piece 251 is fixed to the U-shaped deck plate 200 It is made of a U-shaped elastic support piece 252 for the coupling, both sides of the support piece 252 is provided with a coupling projection (P) inserted into the coupling groove (K). The vertical piece 251 may be further provided with a through hole 251a for the flow of concrete.

The spacer 250 configured as described above is pressed downward in the state of being connected to the upper flange 230 of the U-shaped deck plate 200, and the coupling protrusion P provided in the support piece 252 is U-shaped by elasticity. Installation work is very simple because the insertion plate coupled to the coupling groove (K) provided in the side plate 220 and the connecting plate 240 of the deck plate 200.

In addition, since the coupling groove (K) is formed long in the longitudinal direction, the spacer 250 installed thereon can freely move back and forth in a state in which the coupling groove (K) is inserted into and coupled to the coupling groove (K). The simplicity also makes the task of error correction very easy.

Figure 9 is for explaining the composite structure of another embodiment of the present invention, (a) (b) shows another embodiment of the flat deck plate 300 and the grid wire 400 to be applied thereto, respectively (C) is a perspective view showing the overall composite structure of another embodiment of the present invention to which the flat deck plate 300 and the grid wire 400 of the above structure are applied.

The flat deck plate 300 is a top plate 330 made of a single plate, the side plate 320 bent to be inclined downward from both side ends of the top plate 330, and the side plate 320 in the horizontal direction again The lower plate 310 is bent, and the lower plate 310 is mounted on the mounting surface 131 of the intermediate member 130.

In this case, the lateral and longitudinal wires 410 and 420 constituting the grid wire 400 are positioned to be spaced apart from the top plate 330 of the flat deck plate 300 to prevent sagging of the grid wire 400. Thus, in order to maintain the above gap, it is necessary to install the spacer, but the installation work of the general spacer has a problem of causing an increase in air delay and cost as mentioned above. However, the spacer 250 of the previous embodiment, which is composed of the vertical piece 251 and the wedge-shaped elastic support piece 252, may not be applied.

Therefore, in the present exemplary embodiment, the above-described problem is solved by integrally providing the supporting portion 430 having the spacer function in the grid wire 400 itself.

The support part 430 is configured to be perpendicular to the lower portion of the planar structure formed by the iron wires in the longitudinal and transverse directions, more specifically, at regular intervals to the iron wires in at least one of the longitudinal and transverse directions. Is installed. That is, as shown in (b) of FIG. 9, the support part 430 may be formed only for the wire in any one direction, but the support part 430 may be provided for both the longitudinal wire 420 and the transverse wire 410. ) May be formed, and this may be selectively performed according to the specification of each iron wire constituting the grid iron wire 400 and the interval between the upper reinforcing bar 111 and the upper reinforcing bar 111.

In addition, the support part 430 may be integrally formed by bending the horizontal wire 410 or the longitudinal wire 420, but the bending diameter is not easy due to the large diameter of the wire, or the position to be provided with the support part 430. If there are not many, the separate chop member may be welded to the grid wire 400.

As described above, the grid wire 400 provided with the supporting part 430 is fixed to both ends of the steel bar 100 by the upper end 111 of the steel beam 100 in one-touch manner. Since the operation of installing the spacer between the flat deck plate 300 and the grid wire 400 can be omitted, it is possible to achieve a precise construction while significantly reducing the air.

The present invention has been described in detail above with reference to specific embodiments, but the above embodiments are merely examples for easy understanding of the present invention, so that those skilled in the art have the scope of the technical idea of the present invention. It will be apparent that various modifications can be made within the scope of the invention. Therefore, such modifications will be described within the scope of the present invention as described in the claims.

The present invention relates to a composite structure that enables efficient cross section by synthesizing a steel beam and a slab and acting integrally, and may be referred to as an industrially applicable invention.

Claims (6)

In the composite structure in which the slab concrete and the steel beam are integrated, The steel beam 100, the upper member 110 embedded in the slab concrete, the lower member 120 exposed to the lower portion of the slab concrete, and the intermediate member connecting the upper member 110 and the lower member 120 Consisting of 130, The upper member 110 is formed of a length member installed in the longitudinal direction of the steel beam 100, the connection member is installed on the lower surface of the length member and connected to the intermediate member 130, The intermediate member 130 is provided with a mounting surface 131 is mounted deck plate for building slab concrete, On the deck plate, a lattice iron wire 400 fixedly disposed between the length member and the length member is disposed, and the lattice iron wire 400 includes a plurality of iron wires 410 and 420 disposed in the transverse direction and the longitudinal direction, respectively. As having a planar structure of the shape, at least one of both ends of the transverse iron wire 410 is provided with a fixing portion 411 which is operated by an elastic force, The fixing part 411 has an insertion groove 411a to which the length member is inserted and fixed, a locking part 411b for preventing the inserted length member from being separated from the insertion groove 411a, and the length member is an insertion groove. Comprised of a guide portion (411c) to guide to enter the (411a), the pressing member 411a by pressing the body of the grid wire 400 in a state that the length member is placed below the guide portion (411c) 1) fixed one-piece composite structure using a one-touch fixed grid iron wire, characterized in that is formed so that the length member is inserted into the insertion groove (411a). The method of claim 1, wherein the steel beam 100 is a one-touch fixed grid wire structure using a one-touch fixed grid wire, characterized in that the camber (△) with a central portion convex upward with respect to the longitudinal direction. According to claim 1, The deck plate is a lower plate 210, the side plate 220 bent vertically upward on both sides of the lower plate 210, the upper flange 230 is horizontally bent at the top of the side plate 220 and In addition, the U-shaped deck plate 200 is composed of a connecting plate 240 bent downward at the end of the upper flange 230, the side plate 220 and the connecting plate 240, the spacer 250 so as to be moved back and forth Reinforced one-piece composite structure using a one-touch fixed grid iron wire, characterized in that is installed. According to claim 1, The deck plate is a top plate 330 made of a single plate, the side plate 320 bent to be inclined downward from both side ends of the top plate 330, and the side plate 320 in the horizontal direction again The flat deck plate 300 is composed of a curved lower plate 310, the grid iron wire 400, the one-touch fixed grid wire structure using a one-touch fixed grid wire, characterized in that the support portion 430 is further provided. The one-touch fixed grid wire of claim 1, wherein a fixing part 411 is provided at one of both ends of the transverse wire 410, and a hook 412 is provided at the other. Reinforcing bar composite structure. According to claim 1, wherein the lower portion of the lattice-shaped flat structure, the support portion 430 is further characterized in that the one-piece fixed-grid composite structure using a fixed grid iron wire.

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