KR101617247B1 - Steel Fiber Rreinforced Telegraph Pole And Production Method Thereof - Google Patents

Abstract

The present invention relates to a steel fiber reinforcing telegraph pole capable of improving tensile strength by a pretension method and a manufacturing method for the same. According to an aspect of the present invention, the steel fiber reinforcing telegraph pole includes: a steel bar vertically installed for structural performance; concrete reinforced by a steel fiber to suppress a fine crack by accommodating the steel bar inside; and an anticorrosive agent coated on the outside to prevent corrosion and improve durability of the concrete after the concrete is cured.

Description

Technical Field [0001] The present invention relates to a steel fiber reinforced telephone pole,

The present invention relates to a steel fiber reinforced telephone pole and a method for manufacturing the same, and more particularly, to a steel fiber reinforced telephone pole and a steel fiber reinforced telephone pole which can prevent micro cracks and improve durability and structural performance by using concrete reinforced with steel fiber in a pre- It is about his method of making.

Concrete poles support the cables for electric power supply and communication cables, which cause cracks due to weathering, deterioration and deterioration of concrete poles themselves for a long period of time and cracks due to deterioration, and due to the loads due to electric wires, communication lines and transformers, (Hereinafter referred to as "vertical deformation") occurs in the vertical direction due to the bending moment of the eccentric load due to the arrangement of the transformer and the power line.

The problems of the old concrete poles are summarized as follows.

First, after several decades of installation, the concrete surface of the main pole is deteriorated and neutralized, and corrosion of the rebar is proceeding.

Secondly, vertical, horizontal, or network cracks (hereinafter referred to as 'cracks') may occur in the concrete itself due to defects in fabrication, and cracks may occur due to the separation of concrete material in the formwork joint And others.

Third, Vertical deformation due to excessive load is generated more than design load by installing additional transformer, communication line, and wire.

The damaged concrete poles not only deteriorate the beauty of the city but also cause serious problems in safety. However, it is difficult to access work equipment due to the concrete poles of the city center, and the work is very difficult due to various troubles around the concrete poles In addition, in case of replacement, unexpected damage may occur in the case of power failure or the like, and in the case of replacing with uninterruptible power, it is more expensive.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steel fiber reinforced telephone pole capable of increasing tensile strength by a pre-tensioning method and a manufacturing method thereof.

It is still another object of the present invention to provide a steel fiber reinforced telephone pole capable of increasing maximum load and deflection deformation capacity and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a steel fiber reinforced electric wire, comprising: a reinforcing bar vertically installed to secure a structural performance; and a reinforcing member reinforcing a steel fiber to reinforce the generation of micro cracks, A concrete and an anticorrosion agent applied to the exterior to prevent durability and corrosion of the concrete after the concrete is cured.

Wherein the reinforcing bar comprises a tensile steel reinforcing bar that is tensioned at both ends and buried vertically in the concrete, a reinforcing bar provided between each of the tensile reinforcing bars and equally spaced to reinforce the structural performance of the tensile reinforcing bar, A tensile steel bar and a spiral reinforcing bar for maintaining the circular shape of the reinforcing steel bar and improving the constraining effect.

The steel fiber reinforced electric pole is provided at both ends of the tensile steel reinforcing bars to apply a tensile force to the tensile reinforcing bars. The concrete reinforcing steel reinforcing steel pipe is provided between the fixing plates to pour the concrete into the reinforcing bars, A mold plate may be formed.

Wherein the fixing plate is provided at an end of the tensile steel bar to prevent movement of the tensile bar when the tensile bar is subjected to a tensile force and a fixing plate provided at the other end of the fixed fixing plate to apply a tensile force to the tensile bar The movable fusing plate may be provided.

The spiral reinforcing bars are formed in a spiral shape on the outside of the vertically provided tensile reinforcing bars and may be increased in spacing to increase the maximum load and bending deformation capacity.

The concrete may be formed by mixing the steel fiber and the mortar, which are formed by bending at both ends of a body having a relatively small length and a small cross-sectional diameter, so as not to be entangled with each other.

The corrosion inhibitor may be applied with a penetrating corrosion inhibitor to prevent corrosion of the steel fiber reinforced with the concrete.

According to another aspect of the present invention, there is provided a method of manufacturing a steel fiber reinforced telephone main body including the steps of: (a) reinforcing a steel fiber to concrete; (b) fixing the reinforcing bars to the fixed fixing plate and the movable fixing plate provided at both ends of the fixing plate provided at both ends of the mold plate; (c) tensioning the tensile bars of the reinforcing bars by applying a tensile force to the movable fixing plates; (d) placing the concrete on the mold plate; (e) rotating the mold plate to apply centrifugal force; (f) removing the tensile bars penetrating the movable fusing plate; (g) applying a corrosion inhibitor to the outside of the cured concrete; . ≪ / RTI >

Wherein the reinforcing bar comprises a tensile steel reinforcing bar that is tensioned at both ends and buried vertically in the concrete, a reinforcing bar provided between the tensile reinforcing bars and equally spaced to reinforce the structural performance of the tensile reinforcing bar, A spiral reinforcing bar may be provided to maintain the circular shape of the tensile reinforcing bars and the reinforcing reinforcing bars and to enhance the constraining effect.

The concrete may be formed by mixing the steel fiber and the mortar, which are formed by bending at both ends of a body having a relatively small length and a small cross-sectional diameter, so as not to be entangled with each other.

According to the present invention, the tensile strength can be increased by applying a tensile force to the tensile steel reinforced in the concrete.

In addition, reinforcing steel fiber to concrete can increase maximum load and bending deformation capacity.

1 is a front view of a steel fiber reinforced telephone pole according to an embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a steel fiber reinforced electric wire,
3 is a cross-sectional view of a steel fiber reinforced telephone pole according to an embodiment of the present invention.
4 is a perspective view showing a state in which a reinforcing bar is fixed according to an embodiment of the present invention;
5 is a cross-sectional view of a mold plate according to an embodiment of the present invention.
6 is a flowchart illustrating a method of manufacturing a steel fiber reinforced electric wire according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a steel fiber reinforced electric pole and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front view of a steel fiber reinforced telephone pole according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a steel fiber reinforced telephone pole according to an embodiment of the present invention, FIG. And a cross-sectional view showing a steel fiber reinforced telephone pole.

As shown in FIGS. 1 to 3, a steel fiber reinforced electric pole 10 according to an embodiment of the present invention includes a reinforcing bar 100 vertically installed to secure structural performance, A concrete 200 reinforced with a steel fiber 210 to prevent micro cracks from occurring and a corrosion inhibitor 300 applied to the exterior of the concrete 200 for preventing durability and corrosion of the concrete 200 after the concrete 200 is cured ).

The reinforcing bar 100 is provided between the tensile reinforcing bars 110 which are vertically buried in the concrete 200 by applying a tensile force at both ends of the reinforcing bars 100 and the tensile reinforcing bars 110, And a reinforcing bar 130 for maintaining the circular shape of the tensile reinforcing bars 110 and the reinforcing reinforcing bars 120 and improving the constraining effect, have.

The tensile reinforcing bar 110 is buried vertically in the concrete 200 and a tensile force is applied to one end of the tensile reinforcing bar 110 to cure the concrete 200 and release the tensile force to apply a prestress .

The tensile reinforcing bar 110 may be formed of a circular reinforcing bar or a PC steel bar. In order to apply a tensile force to the tensile reinforcing bar 110, a tensile force may be applied to the reinforcing bar 110, or a tension may be applied to the other end.

In addition, the tensile reinforcing bars 110 may be buried in the concrete 200 in a circular shape as shown in FIG. 3, and may be equally spaced.

The reinforcing bars 120 may be provided at regular intervals between the tensile bars 110 buried in the concrete 200 in a circular shape. The reinforcing bars 120 may be vertically provided in the same manner as the tensile bars 110 to reduce a load load.

The spiral reinforcing bar 130 may surround the tensile reinforcing bar 110 and the reinforcing reinforcing bar 120 so that the tensile reinforcing bar 110 and the reinforcing reinforcing bar 120 may maintain a circular shape. The spiral reinforcing bars 130 may be provided to enhance the constraining effect between the tensile reinforcing bar 110 and the reinforcing reinforcing bars 120. The initial stiffness may be decreased by increasing the spacing between the reinforcing bars 110 and 120, .

The spiral reinforcement 130 may bind the spiral reinforcement 130 and the tensile reinforcement 110 with a wire loop or the like so that the spiral reinforcement 130 is not released when a tensile force is applied to the tensile reinforcement 110 .

The concrete 200 accommodates the reinforcing bars 100 and may reinforce the steel fibers 210 to inhibit micro cracks from occurring.

Generally, in the concrete 200 reinforced with the steel fiber 210, the specific gravity of the steel fiber 210 and the aspect ratio (ratio of diameter to length) of the steel fiber 210 are different from that of the material constituting the cement matrix, Fiber bundle phenomenon occurs, and it is known that the steel fiber 210 does not exhibit the original performance of the reinforced concrete 200, or rather it causes brittle fracture and durability deterioration.

In order to prevent the concrete 200 from being entangled with each other, the concrete 200 may be reinforced with the steel fiber 210 bent at an upper end of both ends of a body having a relatively small section and a relatively long length.

The steel fiber 210 is formed to have a body portion having a small diameter of about 0.6 mm and has a bending bent portion formed by bending the body portion into a predetermined shape so that the concrete 200 is inserted into the concrete 200, It is possible to increase the adhesion area with the particles and to exhibit excellent fixing ability and adhesion ability.

The steel fiber 210 is distributed in the cross section of the concrete 200 to increase the binding force between the concrete 200 and uniform tensile force is applied to the whole cross section of the concrete 200 to absorb and disperse external stress It is possible to expect the effect of improving the shear strength, flexural toughness, impact resistance, etc. of the constructed concrete 200 structure.

The concrete 200 is prepared by mixing a premixing mortar material prepared by mixing cement, sand, reactive powder, filler and thickener in advance and mixing the mixture with water and a high-performance water reducing agent, mixing the mixture with a high-speed mixer, The steel fibers 210 having different sizes may be added to the mixture of the blend water in a single or hybrid form, mixed again, and then cured for a certain period of time.

The corrosion inhibitor 300 is applied to the exterior of the concrete 200 when the concrete 200 is cured after it is buried therein so that the steel fibers 210 and the reinforcing bars 200 reinforced with the concrete 200 100) can be prevented.

The corrosion inhibitor 300 penetrates along the micro pores of the concrete 200 to prevent the deterioration and neutralization of the concrete 200 and uses the permeation inhibitor 300 to completely penetrate the moisture and the salt .

FIG. 4 is a perspective view showing a state in which a reinforcing bar is fixed according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of a mold plate according to an embodiment of the present invention.

4 to 5, a steel fiber reinforced telephone main body 10 according to an embodiment of the present invention is characterized in that the steel fiber reinforced telephone main body 10 is provided at both ends of the tensile reinforcing bar 110, The concrete 200 is installed between the fixing plate 400 and the reinforcing bar 100 and is then formed into a circular shape for applying a centrifugal force to the concrete 200. [ And may further include a mold plate 500 formed thereon.

Since the steel fiber reinforced telephone main body 10 is cured while applying centrifugal force to the concrete 200, the fixing plate 400 and the mold plate 500 can be rotated with the steel fiber reinforced telephone main body 10 lying horizontally have.

The fixing plate 400 includes a fixed fixing plate 410 provided at an end of the tensile reinforcing bar 110 to prevent the tensile reinforcing bar 110 from moving when the tensile reinforcing bar 110 is tensioned, The fixed fusing plate 410 and the movable fusing plate 420 may be provided on the other end to apply a tensile force to the tensile reinforcing bars 110.

The fixing plate 400 may be provided at the lower end and the upper end of the mold plate 500 to apply a tensile force to the reinforcing bars 100.

The fixed fixing plate 400 may be provided at a lower portion of the mold plate 500 to fix the end of the tensile reinforcing bar 110. As shown in FIG. 5, a method of fixing the end portion of the tensile reinforcing bar 110 to the fixed fixing plate 400 includes providing a spiral groove at the end of the tensile reinforcing bar 110, Or the end of the tensile reinforcing bar 110 on the outside of the fixed fixing plate 400 after the tensile reinforcing bar 110 passes through the fixed fixing plate 400 There may be a way to fix it.

The fixed fixing plate 400 may be provided between the tensile bars 110 to fix the reinforcing bar 120 maintaining a circular shape to maintain the shape of the reinforcing bars 100.

The movable fusing plate 420 may be provided on the fixed fusing plate 400 and the upper end of the mold plate 500. The movable fusing plate 420 may pass the tensile bar 110 and apply a tensile force to the tensile bar 110.

As a method of applying a tensile force to the tensile reinforcing bar 110 through the movable fixing plate 420, after the movable fixing plate 420 is coupled to the mold plate 500, the movable fixing plate 420 does not move A tensile force can be applied to the end portion of the tensile reinforcing bar 110 penetrating the movable fixing plate 420 using a bolt or a pressure gauge.

Or the movable fixing plate 420 through which the tensile reinforcing bars 110 are passed may be formed by fixing the tensile reinforcing bars 110 below the upper portion of the mold plate 500 and then fixing the movable fixing plate 420 to the mold plate 500, and apply a tensile force to the tensile steel bar 110.

The mold plate 500 is provided with an upper mold plate 510 and a lower mold plate 520. After the upper mold plate 510 is removed and the reinforcing bar 100 is disposed, The upper mold plate 510 may be coupled to the lower mold plate 520. [

The mold plate 500 may have a coupling hole to which the fixing plate 400 is coupled and a separate caulking may be provided between the mold plate 500 and the fixing plate 400, It can be prevented from being discharged by the centrifugal force.

Hereinafter, a method of fabricating a steel fiber reinforced telephone pole according to another embodiment of the present invention will be described with reference to the same reference numerals as those of the steel fiber reinforced telephone pole according to the above-described embodiment, and a detailed description thereof will be omitted.

6 is a flowchart illustrating a method of manufacturing a steel fiber reinforced electric wire according to another embodiment of the present invention.

In step S100, the concrete 200 can be reinforced with the steel fiber 210. [ Since the concrete 200 is reinforced with the steel fiber 210, the durability and the structural performance can be improved, and the maximum load and deformation capacity can be increased.

The steel fiber 210 may be bent upward at both ends of a body having a relatively small section and a relatively long length so as not to be entangled with each other in the concrete 200.

In step S200, the tensile steel bars 110 and the reinforcing bars 120 may be mounted on the fusing plate 400 provided at both ends of the mold plate 500.

The fixing plate 400 includes a fixed fixing plate 410 provided at an end of the tensile reinforcing bar 110 to prevent the tensile reinforcing bar 110 from moving when the tensile reinforcing bar 110 is tensioned, The fixed fusing plate 410 and the movable fusing plate 420 may be provided on the other end to apply a tensile force to the tensile reinforcing bars 110.

Step S300 may apply a tensile force to the tensile steel bar 110 fixed to the fixing plate 400 in step S200. The tensile reinforcing bar 110 may be passed through the movable fixing plate 420 to exert a tensile force on the tensile reinforcing bars 110.

In step S400, the spiral reinforcing bar 130 may be coupled to the outside of the tensile reinforcing bars 110 and the reinforcing bars 120. [ The initial stiffness is lowered by increasing the spacing of the spiral reinforcement 130, but the maximum load and the bending deformation capacity can be improved.

Step S500 may place the concrete 200 on the mold plate 500 on which the reinforcing bars 100 are laid. After the upper mold plate 510 of the mold plate 500 is coupled to the lower mold plate 520, a centrifugal force may be applied to the concrete 200 by rotating the mold plate 500 in step S600.

In step S700, tensile reinforcing bars (not shown) penetrating through the movable fixing plate 420 to which tensile force is applied to the tensile reinforcing bars 110 to improve the durability and structural performance of the concrete 200 after the space is formed by centrifugal force, 110 can be removed.

In step S800, the cured concrete 200 may be removed from the mold plate 500.

In step S900, the corrosion inhibitor 300 is applied to the outside of the concrete 200 to prevent the corrosion of the steel fiber 210 and the reinforcing bar 100 buried in the concrete 200, thereby improving durability.

While the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Those skilled in the art, who understands the spirit of the present invention, can readily suggest other embodiments by adding, changing, deleting, adding, or the like of components within the scope of the same idea, I would say.

100: Rebar 110: Tension bar
120: Reinforcing bar 130: Helical bar
200: concrete 210: steel fiber
300: Corrosion inhibitor

Claims (10)

In order to secure the structural performance,
In order to prevent the micro-cracks from being mixed with each other and to prevent the micro-cracks from being entangled with each other, the concrete reinforced with the steel fiber reinforced by bending from both ends of the body having a relatively long length and having a small cross- ,
And an anticorrosion agent applied to the exterior for the purpose of preventing durability and corrosion of the concrete after the concrete is cured,
Wherein the reinforcing bar comprises a tensile reinforcing bar which applies a tensile force at both ends and is buried vertically in the concrete,
A reinforcing bar provided between each of the tensile bars at regular intervals to reinforce the structural performance of the tensile bar,
A spiral reinforcing bar for reinforcing the restraining effect by increasing the spacing between the tension bar and the reinforcing bar in order to increase the maximum load and the bending deformation capacity; and,
Wherein the steel fiber is distributed in the cross section of the concrete to increase the binding force between the concrete particles and uniform tensile force is applied to the entire cross section of the concrete to absorb and disperse external stress to be exerted, And a bending bending portion formed by bending the body portion in a predetermined shape so as to improve bending toughness, impact resistance, and the like.
delete The method according to claim 1,
Wherein the steel fiber reinforced electric pole is provided at both ends of the tensile steel reinforcing bars to apply a tensile force to the tensile reinforcing bars,
Further comprising a mold plate provided between the fixing plates and formed in a circular shape to apply centrifugal force to the concrete after the concrete is poured into the reinforcing bars.
The method of claim 3,
Wherein the fixing plate is provided at an end of the tensile steel bar to prevent movement of the tensile bar when the tensile bar is tensioned,
And a movable fixing plate provided on the fixed fixing plate and the other end to apply a tensile force to the tensile reinforcing bars.
delete delete The method according to claim 1,
Wherein the corrosion inhibitor is applied with a penetrating corrosion inhibitor to prevent corrosion of the steel fiber reinforced with the concrete.
delete delete delete

Images