KR101608624B1 - Method for lifting the height of tower - Google Patents

Abstract

The present invention relates to a method for lifting a power transmission tower, which comprises: (S1) a step of performing basic construction for putting a tower in the external side of an existing tower; (S2) a step of stopping the line 1 on one side of the existing tower to protect a charging unit and to transmit power; (S3) a step of stopping the line 2 on the other side of the existing tower; (S4) a step of assembling the new tower on the part of the basic construction and installing an arm on one side; (S5) a step of moving in the air and adding the power line of the line 2 on the arm on one side of the new tower; (S6) a step of installing an arm on the other side of the new tower after stopping the power of the line 1; (S7) a step of moving in the air and adding the power line of the line 1 to the arm on the other side of the new tower and transmitting power; and (S8) a step of removing the existing tower. The present invention does not need to install a temporary line or to secure additional land and perform the construction for lifting a tower while minimizing the civil complaints.

Description

{METHOD FOR LIFTING THE HEIGHT OF TOWER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of upending a transmission tower, and more particularly, to a method of upgrading a transmission tower by elevating the tower to an outside of an existing tower, .

Recently, the environment centering on electric power lines has become very difficult due to the improvement of economic development and living standard, the activation of regional development, the progress of urbanization, and the social desire for nature and living environment.

As a result of such environmental changes, the new construction project is facing a vicious cycle in which large-scale complaints are filed around neighboring villages where the railway passes, excessive demands for compensation due to land price decline, legal restrictions on environmental preservation, It is a situation that is repeated. In addition, in terms of facility operation, timely maintenance is delayed due to the need for maintenance and repair work, complaints about demolition of existing lines, relocation requests, power generation cost constraints, and difficulties with a ceasefire.

Moreover, railway lines constructed in the 60s and 70s economic development roads have not established clear ground level standards, and many railway towers have been built by constructing railway lines. The development of facilities such as tree growth, There is a tendency that the distance that the distance is less is increasing.

However, there is a problem that it is impossible to apply the Hwlper-Tower method, which has been developed in the case of steel towers, main displacement, and curved steel towers, which have generated basic floating displacements (elevation difference and surface distance).

 Therefore, it is required to develop an advanced method of upgrading transmission tower to cope with 154kV multi-line steel tower and 345kV class steel tower.

Korean Patent Laid-Open Publication No. 2013-0073377 (entitled "Transmission Tower Towing Device, Date Published: 2013.07.03)

The present invention has been proposed in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a new steel tower without restricting the height to the outside of the existing steel tower, The purpose of this is to provide a method of upgrading the transmission tower to remove the existing tower.

According to an aspect of the present invention for achieving the above object, there is provided a method of manufacturing a steel tower, comprising the steps of: S1) installing a steel tower on the outside of an existing steel tower; S2) A step S3) of interrupting the other two lines of the existing pylon; S4) a step of assembling a new pylon and installing a single arm on the pylon; b) installing a new pylon on one side of the new pylon; A step S6) of installing the other arm of the new steel tower after the interruption of the one line, S7) a step of aerial movement of the power line and transmission and transmission of the one line to the other arm of the new steel tower, S8) removing the existing steel tower.

The method of claim 1 or 2, wherein the step of S1) comprises the steps of: constructing microfiles in four directions on the outside of the existing steel tower; extending and assembling the steel tower main slab; installing reinforcing bars around the steel main frame, Process.

The method of claim 1 or 2, wherein in the step (S2), the charging of the charging part is performed by conducting detection and grounding of the adjacent steel towers after one side of one side of the existing iron tower is cut off and installing a protection guide bar to the one charging part, And a step of transmitting power to the one line after the ground is demolished.

The step S4) includes the steps of assembling the body of the new steel tower and the construction of the steel tower in the foundation part, removing the arm after moving the power line of the two wires of the existing steel tower to the tower, And a step of installing the arm on one side.

After step S5), further grounding and transmission may be performed.

The method of claim 1, wherein the step S6) comprises the steps of conducting detection and grounding of the adjacent steel towers after the one line is cut off, removing the guard bars and the insulation arm of the one- And then installing the other arm of the new steel tower in a direction corresponding to the removed arm.

The step S7) may include a step of moving the power line by one line to the other arm of the new steel tower and conducting a power line transmission after the ground removal.

The present invention reinforces the foundation of an existing steel tower and assembles a new steel tower outside the existing steel tower while alternately interrupting the first line (# 1T / L) and the second line (# 2T / L) You can build a new steel tower at the location of the existing tower.

This is because unlike the existing steel tower elevation method, there is no need to install a temporary railway and secure additional paper. Therefore, it is possible to carry out a steel tower elevation work with minimized civil complaints and reduce the construction cost by reusing existing power lines. There is an effect that can be dramatically reduced.

1 is a flowchart showing a process of a transmission tower elevating method according to the present invention.
FIG. 2 is a view showing a state in which a steel tower is erected in a step S1 of a method of upgrading a transmission tower according to the present invention.
FIG. 3 is a view showing a state in which one side of an existing steel tower is interrupted (one line) and a charging part is protected (one line) in step S2 of the method of upgrading a transmission tower of the present invention.
Fig. 4 is a view showing a state where the other side of the existing steel tower is stopped (two lines) in step S3 of the method of upgrading the transmission tower of the present invention. Fig.
FIGS. 5A and 5B are views showing a state in which a new steel tower is assembled and one arm is installed in step S4 of the method of upgrading a transmission tower of the present invention.
FIG. 6 is a view showing a state in which the wire is moved in the air (two lines) and the line is turned on (two lines) in step S5 of the method of upgrading the transmission tower of the present invention.
FIG. 7A and FIG. 7B are views showing a state in which an arm of one side of an existing steel tower and a side arm of a new steel tower are installed in step S6 of the method of upgrading a transmission tower of the present invention.
FIG. 8 is a view showing a state in which a wire is moved in the air (one line) and a line is transmitted (one line) in step S7 of the method of upgrading a transmission tower of the present invention.
FIG. 9 is a view showing a state in which an existing steel tower is removed and a transmission tower is raised in step S8 of the method of upgrading a transmission tower according to the present invention; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the method of upgrading a transmission tower of the present invention comprises the steps of: S1) establishing a foundation for a steel tower; S2) transmitting one of the existing steel towers one after the other, (S6) a step of assembling a new tower and assembling a new tower to the first tower, S5) attaching a power line to the one arm of the tower, and S6) S7) a power line is moved to the other arm of the newly installed steel tower and the power is transmitted and conducted, and S8) the existing steel tower is removed.

The transmission tower elevation method is a method in which the foundation is reinforced from the outside of the existing steel tower 1, the one of the existing steel tower 1 is shut off, the new steel tower 20 is assembled and guided, With the method, the height of the pylon can be increased at the location of the existing pylon (1), and existing power lines can be recycled. An existing steel tower means an existing steel tower.

It is applicable to the 154kV multi-line tower and the 345kV transmission tower because it is possible to construct the tower upwards from the position of the existing tower by only one side line ceasefire.

Step S1) is a step of performing foundation work on the outside of the existing steel tower 1, specifically, the foundation of the steel tower is performed at the location of the existing steel tower 1. [

The order should be preceded by a survey of surrounding structures and underground facilities before the construction of the pylon. If construction is carried out close to a structure or underground buried area, it should be examined for damage and deformation, and if necessary, protection or replacement should be carried out. If you are working close to a gas pipe or when you are working on exposing a gas pipe, arrange a professional guardian.

The foundation construction can be selected in consideration of stability and economy among the micro-pile construction (Micro-PilS5) construction, the inverted-T type independent foundation construction method, and the front (MAT) foundation construction method. In this embodiment, .

2, the step S1 includes the steps of constructing the micro pile 5 in the four outer sides of the existing pylon 1, extending and assembling the pile 21, And forming a base 25 and a main body 27 for reinforcing the base by placing reinforcing bars around the main plate 21 and assembling the reinforcing bars and installing the concrete after the formwork is installed.

Microfiles (5) Construction is suitable for downtown construction due to low vibration and noise, and it is possible to install files at any angle.

Microfile construction can be done in the following order: 1) DrillinS7, 2) Steel pipe casing installation, 3) Steel bar installation, 3) Steel rod coupler connection, and 4) Grouting work.

A casing 7 is provided in the perforated portion to retain the round hole of the soil layer hole and the steel bar 9 is inserted into the casing 7 and the steel bar 9 inserted into the casing 7 9 are not eccentric, a spacer (11) is provided on the outer circumferential surface of the steel bar at intervals of 3 to 4 m. The steel rod can be connected to the coupler considering the length and site conditions to secure the set length. After the completion of the installation of the steel bar 9 in the casing 7, the grouting material 13 is continuously supplied into the casing 7 and the operation is performed until the material overflows.

The grouting material fed into the casing (7) may comprise water, cement, admixture. For example, the ratio of water to cement may be less than 45%, and the admixture may include cement weight × compounding ratio, and the mixing order is water, cement, and admixture order.

It is preferable to conduct a flow time measurement test with a flow cone (Flow ConS5) to determine an appropriate compounding ratio before grouting, and the flow time (Flow TimS5) measurement should be performed within 15 minutes after mixing, .

In addition, it is preferable to perform Expansibility and BleedinS7 tests to determine an appropriate blending ratio before grouting. The plexiglass container with a diameter of 10 cm and a height of 10 cm should be used for the swelling and bleeding test. Measurements are made after 3 and 24 hours and the following values are measured.

Bleeding (%): (? 1? S8) 100

Expansion ratio (%): (? 2 / S8) 占 100

△ 1 is (WATER LEVEL) - (AVERAGE OF GROUT MIX), and △ 2 is (AVERAGE OF GROUT MIX) - (FILLING LEVEL).

After the grouting, the pull-out test of the micro-files is carried out. Pull load test is performed to check the load displacement displacement of the micro pile to ascertain the design pulling force.

After the drawing load test, the steel plate 15 is attached to the micro pile 5 and fixed with the lock nut 17. [ The steel plate 15 and the lock nut 17 should be of a set size and managed so that there is no harmful factor that may impact and damage the micro pile 5 when all the installation is completed.

When the micro pile construction of the above-described process is completed in the four outer sides of the main pylon 3 of the existing pylon 1, the pylon foundation main pylon 1 21).

In the extension assembly of the steel tower foundation slab 21, each outside of the existing steel tower 1 is installed so as to surround the steel tower foundation slab 21.

The extension of the base plate 21 of the steel tower is performed immediately after the completion of the excavation work and completed until the concrete is poured. The leg unit 23, which interconnects the base plate 21, do.

After assembling the leg unit (23) to the base plate (21) of the steel tower, it is finally checked whether the face distance, diagonal distance and height difference coincide with the numerical values in the drawing. If there is an error, do. When the adjustment is completed, fix the base plate of the steel tower (21) firmly and properly with bolts, nuts, etc. so as not to shake.

The rebar assembly is for reinforcement of the concrete strength before grouting to form the base portion 25 and the main body portion 27. The form is for forming the shape of the base portion 25 and the main body portion 27.

It is desirable that the spacing between the reinforcing bars and the formwork be precisely maintained by using spacers and that the joints of the reinforcing bars be offset from each other so as not to be gathered on one end face in order to reinforce the strength.

It is recommended to clean the inside of the formwork and spray it with clear water so as not to absorb the moisture of the concrete, and limit the carrying time of the concrete within 1.5 hours.

After pouring the concrete, the form can be disassembled after 4 days at an average temperature of 20 ° C or higher. A bottom portion 25 for supporting the steel tower foundation slab 21 is formed by wrapping the lower end of the steel tower foundation slab 21 and the micro pile 5 by the form disassembly.

Further, a circular mold for enclosing each steel tower base main wood 21 is further provided at the upper portion of the base portion 25. The concrete is inserted into the circular mold by about 30 cm from the leg monolith (23) so that the residual amount (concrete) of the existing pylon (1) to be described later can be laid and finished.

In step S2, one side of one side of the existing steel tower is cut off and the transmission is carried out after protecting the charging part.

As shown in Fig. 3, the left line (one side) of the steel tower is referred to as one line, and the right line (opposite side) of the steel tower is indicated as # 2T / L.

The one-line interruption of one side of the existing steel tower (1) means that the left side of the existing steel tower (1) is to be interrupted.

The charging section A protection includes the steps of conducting the detection and grounding of the power line a for one line which has ceased after one line of one side of the existing steel tower 1 to the adjacent steel tower, 31, installing the insulation arm 33 on the protection guide bar 31, and disconnection of the grounded power line to the adjacent steel tower and transmission to one line.

The live part (A) is a part where there is a risk of electric shock due to the power line or the electric appliance being exposed in the existing steel tower (1). A protective device is installed in the live part (A) of the one line which has been interrupted. The protection device includes a protection guide bar (31) and an insulation arm (33).

The protection guide bar (31) is formed by arranging two acid-shaped steel bars so as to be parallel to each other, and connecting the two mountain-shaped steel bars to one or more steel bars to form a ladder shape. Insulation arm installation position can be examined and insulation arm fitting can be installed at insulation arm installation position. In the present embodiment, two insulating arms 33 corresponding to the used voltage are provided for each of the shape steel bars of the protection guide bar 31. [

The insulation arm 33 may be a polymer insulation arm, an insulator, or the like.

After the insulation arm 33 is installed, the power line a can be pushed outward and the power line can be attached to the suspension cramp and connected to the insulation arm 33. Connecting the power line (a) to the insulation arm (33) completes the installation of the charging unit protection device. The suspending cramp is a bracket for mounting the power line (a) to the insulating arm 33.

In addition to the live part protection device, the live part (A) can be completely covered with a protective net or insulated cover with insulation effect.

Charging part (A) After completion of protection, final inspection, remove the ground, and make one transmission.

Step S3) cuts off the other two lines of the existing pylon 1 as the right line.

As shown in Fig. 4, the two lines indicated by # 2T / L are cut off on the right line (opposite side) of the steel tower. When the protection device is installed in the live part (A) after one line shutdown, one line is transmitted and the two lines are shut off. When the two-line cease-fire operation is completed, the power line of the two lines is energized and grounded to the adjacent steel tower in the working area.

Accordingly, in step S3), one rotation is in the transmission state and the second line is in the arm state.

S4), the one-side arm 20b is installed in the new pylon 20 assembled and assembled with the newly built pylon 20 at the base construction.

(B) of the two power lines of the existing pylon 1 are moved to the top of the tower, and the step (S4) is followed by a step of assembling the body (22) of the new pylon (20) (1b), and installing the arm (20b) on one side of the new steel tower (20).

5A, the body 22 of the new pylon 20 is assembled to the upper part of the pylon main frame 21 in a state where the two-line shutdown operation is completed. The body 22 of the new steel tower 20 can be assembled by installing diver and wire for lifting the material. The height of the new steel tower 20 is higher than the height of the existing steel tower 1 and there is no height restriction.

When the assembly of the body 22 of the new steel tower 20 is completed, it is possible to fix the assembled state through the fact that it is the steel tower main body.

After completion of the assembly and fixing of the body 22 of the new steel tower 20, the wire bracket provided on the power line b of the two lines is removed and the power line b mounted on the arm 1b of the existing steel tower 1, And moves it to the top of the existing steel tower 1. [

After the power line b is moved to the tower of the existing tower 1, the rotor 1 (not shown) and the arm 1b are sequentially removed.

The state in which the electric power line b attached to the arm 1b of the existing steel tower 1 is disassembled and moved to the column body and the arm 1b is removed is as shown in Fig. 5B.

The arm 20b is installed on one side of the new pylon 20 corresponding to the direction in which the arm 1b of the existing pylon 1 is removed. The arm 20b of the new steel tower 20 is installed at a height higher than the height of the arm 1b before the existing steel tower 1 is dismantled.

Step S5) involves two lines of power line aerial movement and guidance to one arm 20b of the new steel tower 20. [

After installation of the arm 20b on one side of the new steel tower 20, the electric wires b moved to the tower of the existing steel tower 1 are moved by air and connected to one arm 20b of the new steel tower 20, .

After the cable construction, the power line idoration survey and the power line long line construction are carried out, and after that, the power line 20b is completed by installing the gold wire fittings of the power line.

The state in which the power line 20b of two lines is moved in the air and is led to one arm 20b of the new steel tower 20 is as shown in Fig.

After step S5), further grounding and power transmission are performed. That is, when the work is completed, the ground is removed and two lines are transmitted.

As a result of applying the construction method, the one-line cease-fire period is 0.5 days, the body assembly of the new steel tower takes 3 days, and the power line movement takes 2 days.

In step S6, an arm 20a is installed on the other side of the new pylon tower 20 after the one line is shut off.

Step S6) is a step of conducting detection and grounding to the adjacent steel towers after the one line is shut down, a process of demolishing the one-line charging portion guard bar and the insulation arm as shown in Fig. 7A, A process of removing the arm 1a after the power line a of one line of the existing steel tower 1 is moved to the column and the other arm of the new steel tower 20 in the direction corresponding to the removed arm 1a, (20a).

After completion of the one-line cease-fire operation, conduct grounding to the adjacent steel towers after disconnection and remove the charging unit protection guide bar (31) and insulation arm (33). Next, the power line (a) of the arm 1a of the existing steel tower 1 is disassembled and moved to the top body. The rotor of the next existing steel tower 1 and the arm 1a are removed.

The other arm 20a of the new steel tower 20 corresponding to the one arm 1a of the existing steel tower 1 is removed.

S7), the power line (a) of one line is aerial moved to the other arm 20a of the new steel tower 20 and guided.

Step S7) includes a process of aerial movement and guidance of one power line (a) to the other arm 20a of the new steel tower 20, and a process of transmission to one line after the grounding disconnection do.

After the installation of the other arm 20a of the new steel tower 20, the electric wires a moved to the tower of the existing steel tower 1 are moved by air and connected to the other arm 20a of the new steel tower 20, .

After the cable construction, the power line idoration survey and the power line long line construction are carried out, and after that, the gold wire fixture attached to the power line is installed to complete the air movement work of the power line (a).

The state in which the power line a of one line is moved in the air and is led to the other arm 20a of the new steel tower 20 is as shown in Fig.

When the work is completed, remove the ground and transmit it to one line.

As a result of applying the method, the one-line cease-fire of the existing pylon 1, the assembly of the other arm 20a of the new pylon 20 and the power line movement takes one day and one day of the long line.

Step S8) includes a step of removing the existing steel tower 1.

Once the transmission is completed on the 1st line, remove the existing steel tower (1). The demolition of the existing steel tower 1 can be carried out by separating the upper part from the main body of the existing steel tower 1 and removing the removed demolition material by connecting the tether to the inside of the new steel tower 20 and lowering it.

When the upper part of the existing steel tower 1 is completely demolished, the main constituent of the existing steel tower 1 is cut, and concrete is further laid on the remaining amount of the steel tower main slab 21 portion of the new steel tower 20, The main body portion 27 of the steel tower 20 is completed.

As a result, the transmission tower is raised as compared with the existing tower shown in Fig.

For reference, the reference numeral 29 denotes a case in which the bottom is filled with the main body 27 at the same height.

The above-mentioned transmission tower elevation method is a method in which a new steel tower 20 is assembled while alternately interrupting one line (# 1T / L) and two lines (# 2T / L) A new steel tower 20 can be constructed at the location (1).

This is because unlike the existing steel tower elevation method, there is no need to install a temporary railway and secure additional paper. Therefore, it is possible to carry out a steel tower elevation work with minimized civil complaints and reduce the construction cost by using the existing power line, .

The scope of the present invention is not limited to the embodiments described above, but may be defined by the scope of the claims, and those skilled in the art may make various modifications and alterations within the scope of the claims It is self-evident.

1: existing pylon 1a, 1b: arm
3: Main Presence 5: Micro file
7: casing 9: steel bar
11: gap 13: grouting material
15: Steel plate 17: Lock nut
20: new steel tower 20a, 20b:
21: steel tower foundation main wood 22: body
23: Leg leg material 25:
27: main part A: live part
31: Protection guide bar 33: Insulation arm
a, b: Power line

Claims (7)

S1) stepping on the outside of the existing pylon;
S2) a step of interrupting one side of the existing iron tower and transmitting power after protecting the charging part;
S3) interrupting the other two lines of the existing steel tower;
S4) assembling a new pylon and installing a new arm on the foundation;
S5) aerial movement and routing of the two power lines to one arm of the new steel tower;
S6) installing the other arm of the new steel tower after the one-line shutdown;
S7) moving the power line by one line to the other arm of the new steel tower; And
S8) removing the existing steel tower,
In step S2)
The charging portion protection
A step of conducting surveillance and grounding to an adjacent steel tower after one-side shutdown of the existing steel tower,
Installing a protection guide bar on the one-line charging unit,
Installing an insulation arm on the protection guide bar;
And transmitting to the one line after the ground disconnection,
The step S6)
A step of detecting and grounding the adjacent steel towers after the one line is cut off,
Removing the one-line-charging-portion-protection-guide bar and the insulation arm;
Moving a power line of one line of the existing steel tower to a tower and then removing the arm;
And installing the other arm of the new steel tower in a direction corresponding to the demolished arm. The method according to claim 1,
The step (S1)
A step of constructing microfiles in four directions on the outside of the existing steel tower,
A step of extending and assembling the steel main frame,
And a step of assembling reinforcing bars around the base steel main frame and installing concrete after installing the formers. delete The method according to claim 1,
The step S4)
Performing a body assembly of a new steel tower and a steel tower as a foundation of the foundation,
Moving the power line of the two lines of the existing steel tower to the tower and removing the arm,
And installing an arm on one side of the new steel tower. The method according to claim 1,
After the step S5)
Wherein the step of removing the ground and transmitting power is further performed. delete The method according to claim 1,
The step S7)
A step of aerial movement and routing of the power line of the one line to the other arm of the new steel tower,
And a step of transmitting power to the one line after the ground removal.

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