KR101928315B1 - Construction Method by Using Double Welded Steel Mesh - Google Patents

Abstract

The present invention relates to a method of constructing a concrete floor surface or wall surface by using a double composite welded reinforcing bar. The method of concrete construction using a double composite welded reinforcing bar according to the present invention includes a step (S 110) of selecting a floor surface to be built, preparing basic materials on the floor surface, and preparing for concrete pouring; a step (S 120) of manufacturing and preparing a double composite welded reinforcing bar (100) including two longitudinal rebars arranged in the longitudinal direction and a width direction rebar disposed in the width direction, in which the width direction rebar is perpendicularly disposed and welded between the two longitudinal rebars and a length (L) of the two longitudinal rebars is at least 150% of a width (W) of the width of the width direction rebar; a step (S 130) of placing the double composite welded reinforcing bar at a work site of cutting or bending the double composite welded reinforcing bar (100) into a shape suitable for the floor surface of the work site for construction, conveying the double composite welded reinforcing bar (100) to the work site, and placing the double composite welded reinforcing bar (100) on the floor surface; and a concrete curing and finishing step (S 140) of forming the floor surface by performing concrete pouring and curing on the floor surface where the double composite welded reinforcing bar (100) is disposed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete floor using a double-

The present invention relates to a method of constructing a concrete floor using a double composite welded reinforcing steel, and more particularly, to a method of constructing a concrete floor using a double composite welded reinforcing steel, The present invention relates to a method for constructing a concrete floor using dual composite steel reinforcing bars, which can be widely applied to a floor of a building, a concrete floor of a road, a concrete panel for a bridge, or the like.

Generally, in order to support the load applied to the ground, the construction work of the concrete floor is performed by placing concrete on the floor surface, curing the concrete after a certain period of time and then forming a hardened concrete floor It means work.

Once the concrete floor is hardened and hardened, the flattening operation is performed before the concrete material is cured, since it can not perform any further flattening operation.

On the other hand, the concrete floor has its own rigid stiffness. However, when exposed to external influences, especially natural conditions, the bottom surface may be cracked due to the severe changes in temperature during the summer and winter, Cracks are formed by the load.

In consideration of this point, a method of constructing a steel wire or a small diameter reinforcing bar at the time of construction of the concrete floor surface has appeared. However, when a concrete floor is constructed by using a steel wire or a reinforcing bar, a steel wire or a reinforcing bar is placed on the floor surface to be constructed, and the other steel wires or reinforcing bars adjacent to each other are connected to each other It was necessary to carry out troublesome work of bundling. In addition, this method has a disadvantage in that it is difficult to strongly cope with an external load because it is merely tied with a wire or a steel bar arranged in the longitudinal direction by only a binding wire. This method is referred to as a so-called binding line bundling method in the present invention.

In order to overcome the disadvantages of the bundling line bundling method, a construction method using a gabion wire net made of a hexagonal or pentagonal shape has appeared. This method was mainly used in Italy where the gabion wire mesh was first developed and was used when constructing the bottom of the road. The gabion wire mesh basically forms a kind of wire nets by producing the hexagonal or pentagonal shape continuously in the front, back, left and right directions by twisting the horizontal wire and the vertical wire into a twisted shape to each other to form a wire net, It is a method to use instead. In the case of using a gabion wire net, it is not necessary to bundle the conventional wire or reinforcing bar together, which is advantageous in that the disadvantage of the binding wire bundling method can be compensated for. This method is referred to as a method of using a so-called open-wire network in the present invention.

However, since the method of using the open-loop wire net is basically to use a small open-loop line, when the load externally applied is large, there is a limit in that it is not very helpful to use the open-loop net. The diameter of the wire used in the gabion wire mesh is usually only about 4 to 5 millimeters, and a product having a diameter of 6 millimeters or more is difficult to form a twisted structure in a twisted shape, so that it can not be manufactured and used.

In fact, in a place such as a highway, a heavy load by a vehicle and a heavy equipment such as a bridge are often passed over even in a bridge, and therefore, it was desperately required to use a reinforcing bar capable of sufficiently overcoming the external load.

As a result, in the conventional method of constructing the concrete floor, the steel wires or the reinforcing bars are arranged in the longitudinal direction so as to correspond to the external load. However, in the construction process, the workers need to bond the steel wires or reinforcing bars arranged in the longitudinal direction There was.

Further, when the open wire netting is used, there is no need to carry out the bundling line bundling operation, but there is a weak point in the external load.

Korean Patent Registration No. 10-151,943 (Registered on June 24, 1998) Korean Patent Registration No. 10-457,166 (Registered on Nov. 2004) Korean Patent Registration No. 10-1,576,853 (Registration date: December 07, 2015)

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the conventional art, and it is an object of the present invention to provide an apparatus and a method for assembling a reinforced concrete structure, which does not require troublesome work of binding a transverse reinforcement and a longitudinal reinforcing steel to a concrete floor, The present invention provides a method of constructing a concrete floor using dual composite steel reinforcing bars, which can be widely applied to a floor of a building, a concrete floor of a road, or a concrete panel for a bridge.

A method of constructing a concrete floor according to the present invention comprises the steps of: (S110) preparing a floor to be constructed and preparing basic materials on the floor to prepare a concrete pouring operation; Wherein the one or more horizontal reinforcing bars are formed by two longitudinal reinforcing bars arranged in the longitudinal direction and one transverse reinforcing bar arranged in the width direction on the floor surface, Wherein the length L of the two longitudinal transverse steel wires is at least 1.5 times greater than the width W of the width of the longitudinal steel wires. )Wow; (S 130) of a double composite welded reinforcing bar to cut or bend the double composite welded reinforcing bar to a shape suitable for the bottom surface of a construction site to be installed, then to the construction site and to place it on the floor; A finishing step (S 140) of pouring and curing concrete on the bottom surface on which the double composite welded steel bar is disposed to form a bottom surface; .

The step of arranging the double composite welded steel bars (S 130) includes disposing a second double composite welded steel bar in the longitudinal direction of the double composite welded steel bars disposed on the floor surface and bonding them to each other, (S 132) of placing a second double-composite welding steel and bonding them together. Further, in addition to the second double composite welded steel bar, the third double composite welded steel bar and / or the subsequent double composite welded steel bar may be further disposed and further bonded to each other.

The double composite welded reinforcing bar used in the method of the present invention is a welded reinforced bar produced by crossing a lateral reinforcing bar and a longitudinal reinforcing bar at right angles to each other at an intersecting point, And the reinforcing bars are inserted into the gap between the two reinforcing bars in the longitudinal direction and the reinforcing bars are formed by putting the reinforcing bars in the width direction perpendicular to the longitudinal direction with one reinforcing bar, A plurality of portions are formed repeatedly and continuously in the direction of the arrow.

The double composite welded reinforcing bars are formed such that the length L of the two longitudinal reinforcing bars is at least 1.5 times as large as the width W of the width of the one width reinforcing bar. The longitudinal direction can be several meters to several tens of meters in accordance with the longitudinal direction of the bottom surface to be worked.

Wherein the double composite welded reinforcing bars are formed by welding two longitudinal reinforcing bars in a vertical direction and inserting the one width reinforcing steel into a space between upper and lower gaps of the two longitudinal reinforcing bars, Wherein the longitudinal reinforcing bars and the one width reinforcing bars are welded to each other.

A method for manufacturing a double composite welded reinforcing bar used in the present invention is a method of manufacturing a double reinforced welded reinforcing bar, comprising the steps of: supplying two reinforcing bars extending longitudinally in a lengthwise direction while maintaining a predetermined gap d in a vertical direction, (S 210); Wherein one reinforcing bar is supplied in a direction orthogonal to the two longitudinal reinforcing bars while the two longitudinal reinforcing bars maintain a constant clearance d while the two longitudinal reinforcing bars are provided in the vertical direction (S 220) of the width direction reinforcing bars to be supplied between the reinforcing bars (d); (S 230) of welding a reinforcing bar to weld the longitudinal reinforcing bars and the width reinforcing bars by an electric welder at a point where the two longitudinal reinforcing bars intersect with the one width reinforcing bar; A step (S 240) of moving the reinforcing bar net to pull the welded reinforcing bar joined to the rear side and moving the welded reinforcing bar; And a finishing step (S 250) of cutting or finishing the finished welded reinforcing bar to an appropriate length.

The method for manufacturing a double composite welded reinforcing bar according to the present invention can be manufactured by using a double composite welding apparatus developed and completed by the inventor for uniformizing and upgrading the quality.

Since the method of constructing the concrete floor according to the present invention uses the double composite welded rebar produced by the manufacturing facility of a factory or the like, the workers do not need to separately perform the bundling work of reinforcing bars at the construction site. This has the advantage that the efficiency of construction work is greatly improved.

Since the method of constructing the concrete floor according to the present invention uses a double composite welded reinforcing bar having a strong resistance against an external force externally applied, it is possible to firmly cope with the external load applied to the floor of the building or the road surface of the road There are also advantages.

In addition, the method of applying the concrete floor according to the present invention can be applied not only to a concrete floor but also to a construction site of an inclined plane, to a unit panel of a bridge, and to a flat wall of a building .

1 is a schematic block diagram of a construction method using a double composite welded reinforcing steel according to the present invention,
FIG. 2 is a schematic conceptual view of a double composite welded reinforcing bar according to the present invention,
Figure 3 is a preferred embodiment of a double composite welded reinforcing bar according to the present invention,
4A is a general conceptual view showing a state where both ends of the double composite welded steel bar 100 are bent,
FIG. 4B is an enlarged view of a bending portion in which both ends of the double composite welded steel bar 100 are bent.
5 is a side view of a preferred manufacturing apparatus for carrying out the method of manufacturing a double composite welded reinforcing bar according to the present invention,
FIG. 6 is a plan view of the manufacturing apparatus of FIG. 5,
FIG. 7 is a conceptual view of a side inserting device of a width direction reinforcing bar in the manufacturing apparatus of FIG. 5,
FIG. 8 is a conceptual diagram of a pulling-up device for a welded reinforcing bar in the manufacturing apparatus of FIG.

Hereinafter, the present invention will be described in more detail and in detail. It is apparent that the present invention is not limited to the specific numerical values or concrete examples provided by the present invention, but is only for the purpose of illustrating the technical idea of the present invention in more detail as a preferred embodiment of the present invention. Further, in the specification of the present invention, a detailed description will be omitted of parts that are well known in the technical field and can be easily created by a person having ordinary skill in the art. The same reference numerals are used for the same parts.

The present invention includes a step (S 110) of selecting a floor to be constructed, preparing basic materials on the floor, and preparing concrete pouring work.

The floor to be constructed may be the floor of the building in the case of construction work, the floor of the road in the case of road construction, and may be a slope in the case of a slope. When the worksite to be constructed is determined, the floor surface of the construction site of the workplace can be arranged and the flooring can be planarized using soil or gravel.

If the floor to be constructed is a flat wall of the building, dust can be removed from the wall of the building and the concrete can be laid by washing.

The present invention includes a step (S 120) of preparing and preparing a double composite welded steel bar 100 to be used on a floor surface or a wall surface to be constructed.

The present invention is characterized in that a reinforcing material to be used for a floor surface or a wall surface is replaced with a double composite welded steel bar (100).

The double composite welded wire net 100 to be used in the present invention is formed of two longitudinal reinforcing bars 110 and one width reinforcing bar 120 and a gap d between the two longitudinal reinforcing bars 110. [ And the length L of the two longitudinal reinforcing bars 110 is set to be equal to the width of the width reinforcing bars 120 W) at least 1.5 times. In addition, the double composite welded wire net 100 has a plurality of such basic structures repeatedly formed in the longitudinal direction and the width direction. When using such a double composite welded wire netting, it is possible to prevent the operator from having to bundle the longitudinal reinforcing bars with separate binding lines.

The double composite welded reinforcing bar 100 is formed by forming two longitudinal reinforcing bars 110 and inserting the width reinforcing bars 120 into a gap d therebetween, Welds the reinforcing bars 120 to each other. The lengthwise reinforcing bars 110 are longer than the width reinforcing bars 120 and the width reinforcing bars 120 are shorter than the length reinforcing bars 110, It says.

The double composite welded reinforcing bar 100 is formed by inserting the width reinforcing bars 120 into the clearance d between the two longitudinal reinforcing bars 110. Therefore, the welded reinforcing bar welded to the width direction reinforcing bars 120 by welding in the upper and lower directions is out of the protection range of the present invention. The welded reinforcing bars of the above- 10-1702557, filed on May 1, 2017.), and the finished product has a reverse structure in its length.

The length W of the two longitudinal reinforcing bars 110 is at least 1.5 times greater than the width W of the width of the one width reinforcing bar 120, Preferably 2.0 times or more. When the length L of the two longitudinal reinforcing bars 110 is formed to be at least 1.5 times smaller than the width W of the width of the one width reinforcing bar 120, It is not preferable because it may not have a sufficient resistance against the external force applied in the longitudinal direction.

In addition, the double composite welded reinforcing bar 100 is formed such that the two longitudinal reinforcing bars 110 are paired in the vertical direction, and the two width reinforcing bars 110 120 are inserted, the two longitudinal reinforcing bars 110 and the one width reinforcing bars 120 are welded to each other by electric welding.

Figure 3 shows a preferred embodiment of a double composite welded steel bar 100.

The double composite welded reinforcing bar 100 is preferably manufactured by an automatic machine 300 at a factory remote from the construction site.

In the present invention, the double composite welded steel bar 100 is cut or bent into a shape suitable for the bottom surface of a construction site to be installed, and then transferred to the construction site and placed on the floor surface. S 130).

The double composite welded steel bar 100 can be cut and used in a form suitable for the bottom surface of a construction site after it is manufactured in a factory. The longitudinal length of the double composite welded rebar 100 manufactured at the factory can be formed to be infinite in theory but it is preferable to cut the length of the double composite welded rebar 100 to a suitable length and width in accordance with the vehicle means transferred to the construction site and the construction site.

Further, it is preferable that the double composite welded reinforcing bar 100 is bent at right angles to both ends thereof. When the both ends are bent and used, the bent portion can be brought into contact with the bottom surface or the wall surface, so that the spacing distance can be formed by a predetermined length, so that it is not necessary to use a separate spacing material. It is preferable that the bent portion be bent at both ends in the longitudinal direction and, if necessary, both ends thereof may be bent in the width direction.

The double composite welded reinforcing bar 100 is cut to a size suitable for a work site, or both ends of the reinforcing bar 100 are bent according to a work site to finish the work.

The double composite welded rebar 100 arriving at the construction site is placed on the floor or wall of the work subject by a crane or the like. In this case, there is no need for workers to perform separate binding line work.

4A is a general conceptual view showing a state where both ends of the double composite welded steel bar 100 are bent,

FIG. 4B is an enlarged view of a bending portion in which both ends of the double composite welded steel bar 100 are bent.

The present invention may include the step of arranging additional double composite weld bars (S 132) in which the plurality of double composite weld bars are disposed to perform the work in the step (S 130) of the double composite weld steel.

In the present invention, when the bottom surface to be constructed is formed to be long in the longitudinal direction like a road, or when the bottom surface to be constructed is wide in the transverse length, at least two double composite welded reinforcing bars 100 are used do. At this time, a second double-composite welded steel bar is disposed in the longitudinal direction of the double-composite welded steel bar, and they are bound to each other. In this case, the double composite welded rebar can be used in plural as long as required. Further, a second double-composite welded steel bar is disposed in the width direction of the double-composite welded steel bar 100, and they are bound to each other. Further, if necessary, a plurality of double-composite welded reinforcing bars may be arranged in the longitudinal direction and the width direction with respect to the first double-composite welded steel bar, and then they may be bonded to each other. The binding method can be performed in a usual manner using a binding line.

The present invention includes a curing and finishing step (S 140) of pouring concrete, curing and forming a bottom surface on the floor where the double composite welded steel bar 100 is disposed.

When the double composite welded steel bar 100 is placed on the floor to be worked, concrete is laid on the double composite welded steel bar 100 to form a concrete layer having an appropriate thickness. The concrete is produced by mixing cement, sand, water, and other components and can be introduced by a ready-mixed vehicle. The concrete layer is allowed to form an appropriate thickness and is sufficiently cured after the necessary curing period has elapsed. The concrete and its work may proceed in a conventional manner.

In the present invention, the double composite welded steel bar 100 can be automatically and mechanically manufactured by the manufacturing apparatus developed by the present inventor. This will be explained in more detail.

5 is a side view of a manufacturing apparatus 300 capable of implementing the method of manufacturing a double composite welded steel bar 100 according to the present invention,

6 is a plan view of the manufacturing apparatus 300 of Fig.

The apparatus 300 for manufacturing a double composite welded reinforcing bar 100 that can be used in the method of the present invention includes a reinforcing bar 310 for supplying two longitudinal reinforcing bars 110 extending in the longitudinal direction, A width reinforcing bar 320 for supplying one width reinforcing bar 120 in a direction orthogonal to the longitudinal reinforcing bar 110 and a width reinforcing bar 320 for welding the length reinforcing bar 110 and the width reinforcing bar 110 A wire mesh pulling portion 340 for pulling the wire mesh portion after completion of the electric welding to the outside and discharging the wire mesh portion to the outside and a control portion C for controlling and controlling the overall system.

The length L of the longitudinal reinforcing bars 110 is greater than the width W of the width reinforcing bars 120. The length L of the longitudinal reinforcing bars 110 is set to be greater than the width W of the width reinforcing bars 120, And is formed larger. The two longitudinal reinforcing bars 110 are supplied in the longitudinal direction while maintaining a predetermined gap d in the vertical direction. It is important that the clearance d is formed to be larger than the diameter of the width direction reinforcing bar 120. When the clearance d is formed to be smaller than the diameter of the width direction reinforcement 120, the width direction reinforcement 120 is inserted into the clearance d of the longitudinal reinforcement 110 It is because it does not support. The reinforcing steel supplying part 310 may be provided with a supply auxiliary part 312 so that the two longitudinal reinforcing bars 110 can be supplied at a predetermined interval.

FIG. 7 is a conceptual diagram of a lateral insertion device of a width direction reinforcing bar in the manufacturing apparatus 300 for manufacturing the double composite welded reinforcing bar 100. FIG.

The width reinforcing bar 320 is a device for inserting the width reinforcing bars 120 between the gaps d of the two longitudinal reinforcing bars 110. [ The width direction reinforcing bar 120 stores a plurality of width direction reinforcing bars 120 and sequentially supplies the width reinforcing bars 120 one by one. The width reinforcing bar 320 includes a servo motor 52 installed on one side of the frame 51, two sprockets 53 that are rotated by receiving power driven by the servo motor, 54, and a wire rod 56 which is coupled to the chain and rotates.

The welding coupler 330 is a device for joining the upper and lower superimposed wires in an orthogonal state to each other by an electric welding method, and can be performed by a conventional technique.

FIG. 8 is a conceptual diagram of a pulling device for a welded reinforcing bar in the apparatus 300 for manufacturing the double composite welded steel bar 100.

The wire mesh pulling part 340 is a device for pulling back the welded reinforcing bar to the outside and discharging the welded reinforcing bar to the outside and includes a first motor 342 operated by a control signal of the control part C, A rotating shaft 344 coupled to the rotating shaft 344 for transmitting the rotating force and a hook 346 coupled to the rotating shaft and hooking a portion constituting the wire mesh by electric welding.

The wire mesh pulling portion 340 includes a second motor 352 which is also operated by a signal from the control portion C, a pinion gear 354 coupled to the second motor, And a guide rail 358 for linearly guiding the forward or backward path by the gear engagement of the pinion gear 354 and the rack 356. [ The operating relationship between each of these parts will be described in detail below.

The composite double-welded reinforcing bar 100 used in the present invention is preferably manufactured mechanically as follows. Due to the strong bending strength of the reinforcing bars and the like, it is practically impossible to produce by hand, and it is not preferable from the viewpoint of productivity.

A method for producing a double composite welded reinforcing bar 100 used in the present invention is a method for manufacturing a double composite welded reinforcing bar 100 in which two steel wires extending in the longitudinal direction are welded to each other in the longitudinal direction (S 210).

In the feeding step S 210 of the longitudinal reinforcing bars, two wire rods extending in the longitudinal direction are selected, and the two wire rods are fed in a slightly widened state in the vertical direction. In the case of feeding in a state in which it is not opened in the vertical direction, the wire to be fed in the transverse direction can not be inserted through the clearance, so care is taken to ensure that the clearance d is secured. In order to precisely secure the clearance d, a supply assisting portion 312 may be provided. It is preferable that the supply auxiliary portion 312 be formed with a through hole capable of passing through in a state where the two wire rods are vertically separated.

A method of manufacturing a double composite welded reinforcing bar 100 used in the present invention is a method of manufacturing a double composite welded reinforcing bar 100 in which a width reinforcing bar 120 is inserted into a clearance d of the two longitudinal reinforcing bars 110 ).

When the two longitudinal reinforcing bars 110 enter and enter the width reinforcing bars 120, one width reinforcing bar 120 is turned inward from the outside intersecting at right angles to the longitudinal direction of the reinforcing bars 120, . The one widthwise reinforcing bars 120 are inserted into a space in which the two longitudinal reinforcing bars 110 supplied from the previous stage form a gap d in the vertical direction.

The one width direction reinforcing bars 120 are inserted from the outside to the inside and are preferably inserted through the width reinforcing bars 320 of the apparatus 300 for producing welded reinforcing bars. This is because when the width direction reinforcing bars 120 are lowered one by one in the width direction reinforcing steel supplying part 60 and the steel wire rods 56 are rotated so that the width reinforcing ribs 120 are positioned between the two longitudinal reinforcing bars 110 (D). The chain 54 is attached to the two sprockets 53 that are rotated by the servomotor 52 and the servomotor 52 is connected to the chain 54. Therefore, (C), when the chain (54) is rotated, it rotates as it is.

The method for manufacturing the double composite welded reinforcing bar 100 used in the present invention includes a welding step (S 230) of reinforcing bars for simultaneously welding the two reinforcing bars in the up and down direction and the reinforcing bars inserted therein.

 The weld joining step S 230 of the reinforcing bars is performed by the electric welder 320 at a point where the two longitudinal reinforcing bars 110 and the one width reinforcing bar 120 cross each other. The electric welding method can be carried out in a manner conventionally practiced in the art. It is preferable that the upper welder and the lower welder perform the electric welding at the same point of time when the longitudinal reinforcing bars 110 and the width reinforcing bars 120 cross each other. When the electric welding operation is completed, the longitudinal reinforcing bars 110 and the width reinforcing bars 120 are welded to each other, and they have a wire net structure as a whole.

The method for manufacturing the double composite welded reinforcing bar 100 used in the present invention includes a moving step (S 240) of moving a wire mesh pulling the welded reinforcing bar to a rear side and moving the welded reinforcing bar.

When the wire mesh structure is formed by the welding operation, the wire mesh moving step (S 240) allows the wire mesh to be pulled backward and moved backward to perform final finishing work. To this end, it is preferable to use the draw-wire pull portion 340 of the welded reinforcing bar 300.

The controller C sends a control signal to rotate the first motor 342 when the longitudinal reinforcing bars 110 and the width reinforcing bars 120 form a welded connection. When the first motor 342 is rotated a little, the rotation shaft 344 is rotated a little, and the hook 346 coupled thereto is rotated, thereby hanging the welded reinforcing bar. At this time, the control unit C again sends a control signal to the second motor 352, and the second motor 352 rotates. When the second motor 352 rotates, the pinion gear 354 coupled to the second motor 352 is rotated, and the second motor 352 rotates backward by the guide rails 358 . When the second motor 352 is moved backward along the guide rail 358, the rotation shaft 344 and the hook 346 and the welded reinforcing bar are simultaneously engaged with the inside of the transfer body 360 Backward. Thus, in conjunction with the welded reinforcing portion, the longitudinal reinforcing bars 110 are simultaneously retracted.

The method for manufacturing the double composite welded steel bar 100 used in the present invention includes a finishing step (S 250) for cutting or finishing the finished welded bar to an appropriate length.

The finishing step (S 250) may further include a cutting knife for cutting the welded reinforcing bar joint to an appropriate length, cutting the bar with the cutting knife, May be adjusted.

The concrete construction method using the double composite welded reinforcing bar according to the present invention can be applied not only to the floor construction of the building and the floor construction of the road but also to the slope construction of the slope or incision and also to the wall of the building. It is obvious that it can be applied to similar workplaces.

Although the concrete construction method using the double composite welded reinforcing bar according to the present invention has been described in detail, it is to be understood that the present invention is not limited to the above-described preferred embodiments, The range is determined and limited.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

100: double composite welded steel (present invention),
110: longitudinal direction reinforcement, 120: lateral direction reinforcement,
300: Manufacturing apparatus for double composite welded reinforcing bar, 310: Reinforcing bar,
320: width reinforcing portion, 330: welding portion,
340: wire mesh pulling part, C: control part,
L: length (longitudinal wire mesh), W: width (width direction wire mesh),
d: Slit in longitudinal direction of longitudinal reinforcement.

Claims (5)

(S 110) a step of preparing a concrete pouring work by selecting a floor surface to be constructed and preparing basic materials on the floor surface;
2). Preparing and preparing a dual composite welded steel bar 100,
2-1) a longitudinal reinforcing bar (S 210) for supplying two longitudinal reinforcing bars extending in the longitudinal direction in the longitudinal direction while maintaining a predetermined clearance (d) in the vertical direction;
2-2) One widthwise reinforcing bar is supplied between the two longitudinal reinforcing bars in the direction orthogonal to the two reinforcing bars, between the clearance (d). In the supplying portion (60) of the welded reinforcing bar manufacturing machine (300) When the directional reinforcing bars are lowered one by one from above, the two sprockets 53 rotated by the servomotor 52, the chain 54 installed on the sprocket, and the wire rods 56 connected to the chain rotate (S 220) of the width direction reinforcing bars, the width direction reinforcing bars being transmitted to the clearance d of the two longitudinal reinforcing bars 110 by the bar 56,
2-3) a welding step (S 230) of a reinforcing bar welded to the longitudinal reinforcing bars and the width reinforcing bars by an electric welder at a point where the two longitudinal reinforcing bars and the one width reinforcing steel intersect each other, Wow,
2-4) a step (S 240) of moving the reinforcing bar net by pulling the welded reinforcing bar to the rear,
2-5) preparing and preparing a double composite welded steel bar (S 120) including a finish step (S 250) of cutting or finishing the finished welded steel to an appropriate length;
3). (S 130) of the double composite welded reinforcing bar 100, which is cut or bent in a shape suitable for the bottom surface of the construction site to be installed and then transferred to the construction site and placed on the floor, Wow;
4). A concrete curing and finishing step (S 140) of pouring and curing concrete on the bottom surface of the double composite welded steel bar 100 to form a bottom surface; To
Wherein the method comprises the steps of:
The method according to claim 1,
The double composite welded reinforcing bar (100) is characterized in that the two longitudinal reinforcing bars are vertically paired,
Wherein the one widthwise reinforcing bars are formed by being inserted between upper and lower gaps (d) of the two longitudinal reinforcing bars, and a plurality of such basic structures are formed repeatedly in the longitudinal direction and the width direction , Concrete floor construction method.
The method according to claim 1,
The placement (S 130) of the double composite welded bar
It is preferable to arrange the second double composite welded reinforcing bars in the longitudinal direction of the double composite welded reinforcing bars disposed on the floor surface and to bond them together or to arrange the second double composite welded reinforcing bars in the width direction thereof, (S132) a step of performing an operation of placing the concrete on the concrete floor.
The method according to claim 1,
The moving step (S 240)
The controller C sends a control signal to rotate the first motor 342 and the rotation shaft 344 and to rotate the first motor 342 and the rotation shaft 344, The hook 346 is rotated to hang the welded reinforcing bar,
The control unit C then sends a control signal to the second motor 352 to rotate the pinion gear 354 by rotation of the second motor 352 and to reverse the rack 356 in the forward direction ,
Wherein the rotary shaft (344) axially coupled to the interior of the transfer body (360), the hook (346) and the welded reinforcing bar are simultaneously moved backward through this series of operative relationships. .
5. The method of claim 4,
The length L of the two longitudinal reinforcing bars is at least 1.5 times greater than the width W of the width of the one width reinforcing bar,
Wherein the one width direction reinforcing bars are welded and welded to a space forming a gap d in the vertical direction between the two longitudinal reinforcing bars.

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