KR102255412B1 - Device for cabel installation and method for cable installation using the same - Google Patents

Abstract

The present invention relates to a cable installation device and a cable installation method using the same. In more detail, it relates to a cable installation device capable of effectively disposing a strand inside a pipe used for a compact multi-strand cable, and a cable installation method using the same. In the cable installation apparatus according to the present invention for this purpose, a plurality of strands are arranged in a pipe in a cable-stayed bridge cable, and a plurality of strands are arranged side by side at the same horizontal position to form one horizontal row, and the horizontal rows are stacked in plural. In the device for installing a cable that has been installed, the upper traction member for pulling the strand disposed at the bottom to the upper part of the pylon, the upper traction member is connected to one side, and the upper traction member in a state in which the strand is connected to the other side. A first multi-guide to be pulled to the upper part of the pylon and a lower part which is connected to the other side of the first multi-guide together with the strand, and pulls the upper traction member moved to the upper part of the pylon to the lower part of the pylon The traction member and the upper traction member are connected to one side, and a plurality of strands forming the horizontal row disposed at the lowest end of the pipe are connected to the other side at the same time. Includes 2 multi-guides.

Description

Cable installation device and cable installation method using it {DEVICE FOR CABEL INSTALLATION AND METHOD FOR CABLE INSTALLATION USING THE SAME}

The present invention relates to a cable installation device and a cable installation method using the same. In more detail, it relates to a cable installation device capable of effectively disposing a strand inside a pipe used for a compact multi-strand cable, and a cable installation method using the same.

In general, in cable bridges such as cable-stayed bridges, a multi-strand cable that supports the bridge deck is a state in which a plurality of strands (strand/strand wire) are tensioned in a pipe made of a steel material such as aluminum such as HDPE or a synthetic resin material. It has a configuration that is arranged as.

In order to arrange a plurality of strands in such a pipe, a member called a glider was conventionally used. A single strand is connected to the glider and the glider passes through the inside of the pipe, so that the strand connected to the glider is placed in the pipe repeatedly, and a plurality of strands are sequentially placed in the pipe.

In the conventional multi-strand cable having such a configuration, since a pipe having a large diameter is used, it is easy to secure a sufficient space for the glider to pass through the pipe.

However, as in the prior art, the larger the pipe diameter, the easier the glider can pass, so that the strand is easy to arrange, but on the contrary, the wind load on the bridge increases. That is, the larger the diameter of the pipe constituting the multi-strand cable, the larger the area to receive the wind power, so that the wind load transmitted by the multi-strand cable increases. When the wind load transmitted by the multi-strand cable increases, the strength required for the part where the multi-strand cable is connected to the pylon or deck of the bridge increases accordingly, which is very disadvantageous in terms of the structure of the entire bridge. do. Therefore, if the same number of strands are placed in the pipe, it is desirable to reduce the diameter of the pipe as much as possible.

To this end, a technology has been developed for a compact multi-strand cable in which a plurality of strands are packed and arranged in a dense form inside a pipe, but such a compact multi-strand cable is formed with a relatively small outer diameter of the pipe. As a result, the space between the pipe and the strand is reduced, and thus there is a limitation in that the method of arranging the strand by repeatedly passing the conventional glider cannot be used.

Therefore, it is necessary to develop a technology for the arrangement of strands in such a compact multi-strand cable.

The technical problem to be solved in the present invention is to provide a cable installation device capable of effectively placing a strand inside a pipe used for a compact multi-strand cable, and a cable installation method using the same.

In the cable installation apparatus according to the present invention for solving the above technical problem, a plurality of strands are arranged in a pipe in a cable-stayed bridge cable, and the plurality of strands are arranged side by side at the same horizontal position to form one horizontal row, and the In the device for installing a cable in which a plurality of horizontal rows are stacked, an upper traction member for pulling the strand disposed at the bottom to an upper portion of a pylon, the upper traction member is connected to one side, and the strand is connected to the other side. In a state, the upper traction member is connected to the other side of the first multi-guide together with the first multi-guide and the first multi-guide together with the strand and moved to the top of the pylon by the upper traction member to the pylon. The pylon by the upper traction member in a state in which a lower traction member and the upper traction member are connected to one side and a plurality of strands forming the horizontal row disposed at the lowest end of the pipe are simultaneously connected to the other side. It includes a second multi-guide to be pulled to the top of the.

In this case, a bendable buffer part may be provided between at least one of the multi-guides and the strand so that a predetermined angle is formed between the multi-guide and the strand.

In this case, the buffer unit may include a case member having a fastening hole formed therein, and a steel wire member connected to both ends of the case member to be bent at a predetermined angle.

In this case, it may include a fastening member that is inserted and fixed to both ends of the case member, and has a through hole formed to allow the steel wire member to penetrate therethrough.

In this case, a deformable steel wire head may be formed on the steel wire member to prevent separation from the fastening member after the steel wire member penetrates the through hole.

In this case, when the steel wire head is deformed, the steel wire head may have a relatively larger width than the inner diameter of the through hole.

In this case, the steel wire member may have a steel wire body spaced apart from the inner circumferential surface of the through hole so that the steel wire member and the fastening member can rotate relative to each other.

At this time, a guide head to which any one of the traction members is connected is formed on one side of at least one of the multi-guides, and a plurality of guide legs are formed on the other side, and the plurality of guide legs are arranged to form mutual inclinations. I can.

In this case, a plurality of the guide legs may be disposed to form a mutual step difference.

In this case, a wing member may be formed on the second multi-guide to prevent rotation of the second multi-guide by being supported by the previously arranged strands.

In this case, the wing member may be disposed such that a step difference with the guide leg is formed.

In addition, in the cable installation method according to the present invention, a plurality of strands are arranged in a pipe in a cable-stayed bridge cable, and the plurality of strands are arranged side by side at the same horizontal position to form one horizontal row, and the horizontal row is n layers. In the method of installing the cables stacked with each other, the steps of sequentially arranging the strands up to an n-2th horizontal row inside the pipe, and arranging the strands in an n-1th horizontal row, and n And simultaneously disposing a plurality of the strands in the second horizontal row.

In this case, the step of arranging the strands in the n-1th horizontal row includes arranging the strands in a manner alternating left and right of the n-1th horizontal row, and when the last strand of the n-1th horizontal row is arranged. 1 It may include the step of pulling the strand and the lower traction member upward together using a multi-guide.

At this time, the steps of simultaneously disposing the plurality of strands in the n-th horizontal row include: connecting an upper traction member to the lower traction member to traction downward, and connecting a second multi-guide to the upper traction member, and And connecting the plurality of strands to the second multi-guide, pulling the second multi-guide upward, and simultaneously disposing the plurality of strands in an n-th horizontal row.

According to the cable installation device of the present invention having the above configuration and the cable installation method using the same, it is possible to manufacture a compact multi-strand cable in which the diameter of the pipe is significantly reduced compared to the prior art, and thus, it is transmitted by the multi-strand cable. It is possible to enjoy the effects of reducing the wind load and, accordingly, the required strength for the part where the pylon or deck of the bridge and the multi-strand cable are connected, so that it is possible to construct a bridge in a more favorable state structurally. have.

1 is a perspective view showing a state in which the last strand of the n-1th horizontal row is arranged using the cable installation device according to the present invention.
2 is a perspective view showing a state in which a plurality of strands arranged in an n-th horizontal row are simultaneously arranged using the cable installation device according to the present invention.
3 and 4 are cross-sectional views showing a state in which a plurality of strands arranged in an n-th horizontal row are simultaneously arranged using a cable installation device according to the present invention, and FIG. 3 is a diagram showing a cable in which 55 strands are arranged 4 is a view showing a cable in which 73 strands are arranged.
5 is a plan view showing a state in which a strand and a lower traction member are connected to a first multi-guide according to the present invention.
6 is a plan view showing a state in which a plurality of strands are connected to a second multi-guide according to the present invention.
7 is a cross-sectional view showing a buffer unit according to the present invention, (a), (b) and (c) are views showing a state in which each component is separated, and (d) shows a state in which each component is combined. It is a drawing.
8 is a cross-sectional view showing a first multi-guide according to the present invention.
9 and 10 are cross-sectional views illustrating a second multi-guide according to the present invention, and FIG. 9 is a view showing a second multi-guide according to an embodiment, and FIG. 10 is a second multi-guide according to another embodiment. It is a diagram showing.
11 and 12 are flow charts illustrating a method of installing a cable using the cable installation device according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of the presence or addition. In addition, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where the other part is "directly above", but also the case where there is another part in the middle. Conversely, when a part of a layer, film, region, plate, etc. is said to be "below" another part, this includes not only the case where the other part is "directly below" but also the case where there is another part in the middle.

1 is a perspective view showing a state in which the last strand of the n-1 th horizontal row is arranged using the cable installation device according to the present invention, and FIG. 2 is A perspective view showing a state in which a plurality of strands are simultaneously arranged, and FIGS. 3 and 4 are cross-sectional views illustrating a state in which a plurality of strands arranged in an n-th horizontal row are simultaneously arranged using the cable installation device according to the present invention, 3 is a view showing a cable in which 55 strands are disposed, FIG. 4 is a view showing a cable in which 73 strands are disposed, and FIG. 5 is a first multi-guide according to the present invention in which a strand and a lower traction member are A plan view showing a connected state, FIG. 6 is a plan view showing a state in which a plurality of strands are connected to a second multi-guide according to the present invention, and FIG. 7 is a cross-sectional view showing a buffer unit according to the present invention, (a), (b) and (c) are diagrams showing a state in which each component is separated, (d) is a diagram showing a state in which each component is combined, and FIG. 8 is a first multi-guide according to the present invention. 9 and 10 are cross-sectional views showing a second multi-guide according to the present invention, and FIG. 9 is a view showing a second multi-guide according to an embodiment, and FIG. 2 is a diagram showing a multi-guide, and FIGS. 11 and 12 are flowcharts illustrating a method of installing a cable using the cable installation device according to the present invention.

In the cable installation device according to the present invention, a plurality of strands 200 are arranged in the pipe 100 in a cable-stayed bridge cable, and a plurality of strands 200 are arranged side by side at the same horizontal position to form one horizontal row. In an apparatus for installing cables in which a plurality of horizontal rows are stacked, an upper traction member 500 is provided for pulling a strand 200 disposed at a lower portion to an upper portion of a pylon. A single strand 200 is connected to the upper traction member 500, and as the upper traction member 500 moves upward, the strand 200 is pulled upward, and through this process, the strand 200 is inside the pipe 100. ) Can be placed sequentially.

While repeating this process, a certain number of strands 200 are sequentially disposed inside the pipe 100 using the upper traction member 500, and thereafter, as shown in FIG. 1, such an upper traction member ( The first multi-guide 300 is connected to 500). The above-described upper traction member 500 is connected to one side of the first multi-guide 300, and the strand 200 is connected to the other side. In this connected state, the first multi-guide 300 is an upper traction member ( 500) to the top of the pylon.

At this time, the lower traction member 600 is connected together with the strand 200 to the other side of the first multi-guide 300. That is, in a state in which the strand 200 and the lower traction member 600 are connected to the other side of the first multi-guide 300 together, the upper traction member 500 is pulled together to the upper part of the pylon. Thereafter, the strand 200 pulled upward is disposed inside the pipe 100, and the upper pull member 500 is pulled downward to the lower portion of the pylon while the upper pull member 500 is connected to the lower pull member 600. do.

In this way, the first multi-guide 300 is used to arrange the strands 200 and at the same time, the lower traction member 600 is pulled upward, and the upper traction member 500 is pyloned using the lower traction member 600. By pulling downward to the lower portion of the compact multi-strand cable, even if the space inside the pipe 100 used for the compact multi-strand cable is narrow, the upper pull member 500 can be effectively pulled downward.

In addition, after the upper traction member 500 is pulled downward, as shown in FIG. 2, the second multi-guide 400 is connected to the upper traction member 500. The above-described upper traction member 500 is connected to one side of the second multi-guide 400, and a plurality of strands 200 forming a horizontal row disposed at the lowermost end of the pipe 100 are simultaneously connected to the other side. In this connected state, the second multi-guide 400 is pulled upward to the upper part of the pylon by the upper traction member 500, and in this process, as shown in FIG. 3, a plurality of the plurality of guides disposed at the lowermost end of the pipe 100 The strands 200 are disposed at the same time.

That is, as shown in FIG. 3, when 55 strands 200 are disposed inside the pipe 100, three strands 200 disposed in the n-th horizontal row are simultaneously disposed through the second multi-guide 400. 4, when 73 strands 200 are disposed inside the pipe 100, two strands 200 disposed in the n-th horizontal row are simultaneously disposed through the second multi-guide 400 It becomes.

In this way, the second multi-guide 400 is connected to the upper traction member 500 pulled downward, and a plurality of strands 200 are connected to the second multi-guide 400 to be pulled upward. It is possible to arrange a plurality of strands 200 corresponding to the n-th horizontal row, and through this, it becomes easy to manufacture a compact multi-strand cable.

At this time, between at least one of the multi-guides 300 and 400 and the strand 200, as shown in Figs. 5 and 6, a certain angle between the multi-guides 300 and 400 and the strand 200 A buffer part 700 that can be bent to be formed may be provided.

That is, the pipe 100 connecting the pylon and the bottom plate is curved while forming a certain curvature by gravity. In the process of the multi-guides 300 and 400 being pulled upward along the inside of the pipe 100, such a multi-guide ( When the strand 200 is directly connected to the 300 and 400, the strand 200 may be bent by the curvature of the pipe 100, so that a certain angle between the multi-guides 300 and 400 and the strand 200 may be bent. A buffer unit 700 is provided.

When the buffer unit 700 is provided in this way, the buffer unit 700 is bent at a certain angle in a section where the strand 200 can be bent due to the curvature of the pipe 100 in the process of upward traction of the multi-guides 300 and 400. As it is deformed, it is possible to effectively prevent the strand 200 from being bent.

In addition, although the lower traction member 600 may be directly connected to the multi-guides 300 and 400, the above-described buffer unit 700 is also provided between the multi-guides 300 and 400 and the lower traction member 600 to be interconnected. It is also possible to configure it to do so.

As shown in FIG. 7, the buffer part 700 includes a case member 710 having a fastening hole 711 formed therein, and a steel wire member 720 that is connected to both ends of the case member 710 to be bent at a predetermined angle. ) Can be included.

That is, the multi-guides 300 and 400 are connected to the steel wire member 720 connected to one end of the case member 710, and the strand 200 is connected to the steel wire member 720 connected to the other end of the case member 710. It becomes.

In this case, fastening members 730 may be provided at both ends of the case member 710 to connect the steel wire member 720 to the case member 710. A through hole 731 through which the steel wire member 720 can penetrate is formed in the fastening member 730 so that the steel wire member 720 is connected and fixed while passing through the through hole 731. The steel wire member 720 is connected to the case member 710 by inserting and fixing them at both ends of the case member 710.

When a screw thread is formed on the inner circumferential surface of the fastening hole 711 formed in the case member 710, and a corresponding thread is formed on the outer circumferential surface of the fastening member 730, the fastening member 730 is fixed to the case member 710 in a simple manner. It becomes possible to do.

In this case, as shown in FIG. 7, the steel wire member 720 includes a steel wire head 721 that can be deformed to prevent separation from the fastening member 730 after the steel wire member 720 passes through the through hole 731. Can be formed.

That is, in a state in which the steel wire member 720 passes through the through hole 731 formed in the fastening member 730, it is configured to be connected and fixed simply by deforming the steel wire head 721.

In particular, when the steel wire head 721 is deformed, the steel wire head 721 may have a width W that is relatively larger than the inner diameter DI of the through hole 731, through which the steel wire member ( 720) can be fixed.

In addition, the steel wire body 722 spaced apart from the inner circumferential surface of the through hole 731 may be formed in the above-described steel wire member 720 so that the steel wire member 720 and the fastening member 730 can rotate relative to each other.

These strands 200 are generally moved to the site while being wound on a reel, etc., and are disposed inside the pipe 100 while directly unwinding the strand 200 from the reel during site installation. During the unwinding process, the strand 200 rotates around the axial direction.

At this time, when the strand 200 is pulled upward in a state that is firmly fixed to the multi-guides 300 and 400, twisting occurs in the strand 200 due to the rotation that occurs when the strand 200 is unwound. Twisting of the 200 may cause unintended stress, which may reduce the durability of the cable, but as described above, the steel wire member 720 and the fastening member 730 penetrate so that they can rotate relative to each other. When the steel wire body 722 spaced apart from the inner circumferential surface of the hole 731 is formed, when the strand 200 rotates, the steel wire member 720 and the fastening member 730 rotate relative to each other, due to the rotation of the strand 200. It is possible to effectively prevent the strand 200 from being twisted.

At this time, a guide head 310 and 410 to which one of the traction members 500 and 600 is connected is formed on one side of at least one of the multi-guides 300 and 400, and a plurality of guide legs 320 and 420 are formed on the other side. ) Is formed, and as shown in FIGS. 8 and 9, a plurality of guide legs 320 and 420 may be disposed to form a mutual inclination (a).

That is, as described above, while the strand 200 is unwound from the reel, rotation occurs in the strand 200. The rotating strand 200 and the lower traction member 600 or other strand 200 rotate as described above. If the strands 200 rotate in a state disposed adjacent to each other, the lower traction member 600 or the other strands 200 may be twisted by the rotating strand 200 and the durability may be deteriorated. Strand 200 that rotates when configured to form a mutual inclination (a) in any guide leg (320, 420) connected to the lower traction member (600) or other guide leg (320, 420) to which the other strand 200 is connected Since the lower traction member 600 or the other strands 200 may be spaced apart from each other, it is possible to effectively prevent them from being twisted by rotation.

In addition, as shown in FIG. 9, a plurality of guide legs 320 and 420 may be disposed to form a mutual step difference.

That is, the space formed to arrange the strand 200 inside the pipe 100 has a certain curvature along the inner circumferential surface of the pipe 100, so that the multi-guides 300 and 400 effectively pass through such a space and the strand ( The plurality of guide legs 320 and 420 are disposed to form a mutual step difference so that 200) can be disposed (refer to FIG. 3).

At this time, as shown in FIG. 10, the second multi-guide 400 is provided with a wing member 430 that is supported by the previously disposed strand 200 to prevent the second multi-guide 400 from rotating. I can.

As described above, when the strands 200 disposed in the pipe 100 are twisted, unintended stress may be generated, and this may reduce the durability of the cable, so that the second multi-guide 400 has a wing member. 430 is formed, and such a wing member 430 is supported by the previously disposed strand 200 when the strand 200 is disposed in the pipe 100, so that the strand 200 is not twisted and is disposed in the pipe 100. To be able to.

In this case, the wing member 430 may be disposed such that a step is formed with the guide legs 320 and 420.

That is, as described above, since the space formed to arrange the strand 200 inside the pipe 100 has a certain curvature along the inner circumferential surface of the pipe 100, the multi-guides 300 and 400 The wing member 430 is disposed such that a step is formed with the guide legs 320 and 420 so that the strand 200 can be disposed (see FIG. 4) while passing effectively.

In addition, in the cable installation method according to the present invention, a plurality of strands 200 are arranged in the pipe 100 in a cable-stayed bridge cable, and a plurality of strands 200 are arranged side by side at the same horizontal position to form one horizontal row. , In the method of installing a cable in which such horizontal rows are stacked in n layers, the step of sequentially arranging the strands 200 up to the n-2th horizontal row inside the pipe 100 (S100), and Arranging the strands 200 in the n-th horizontal row (S200), and simultaneously disposing the plurality of strands 200 in the n-th horizontal row (S300).

That is, a single strand 200 is sequentially arranged using the upper traction member 500 up to the n-2th horizontal row inside the pipe 100, and then the strands 200 are arranged in the n-1th horizontal row. , By simultaneously arranging a plurality of strands 200 in the n-th horizontal row, a compact multi-strand cable having a significantly reduced diameter of the pipe 100 can be installed.

In this case, the step of arranging the strands 200 in the n-1th horizontal column (S200) is a step of arranging the strands 200 in a manner alternating the left and right sides of the n-1th horizontal column (S210), and When the last strand 200 in the n-1th horizontal row is disposed, the step of pulling the strand 200 and the lower traction member 600 upward together using the first multi-guide 300 (S220) may be included.

That is, since the strands 200 are arranged in a left-right alternating manner, even when the space is narrow, the strands 200 can be effectively disposed.

In addition, in the process of arranging the last strand 200 in the n-1th horizontal row, the strand 200 and the lower traction member 600 are simultaneously pulled upward using the first multi-guide 300, as described later. , It becomes easy to pull the upper traction member 500 downward using the lower traction member 600.

At this time, the step of simultaneously disposing the plurality of strands 200 in the n-th horizontal row (S300) includes the step of traction downward by connecting the upper traction member 500 to the lower traction member 600 (S310), and the upper traction Connecting the second multi-guide 400 to the member 500 (S320), and connecting the plurality of strands 200 to the second multi-guide 400, and pulling the second multi-guide 400 upward Thus, the step of simultaneously disposing the plurality of strands 200 in the n-th horizontal column (S330) may be included.

That is, since a plurality of strands 200 are simultaneously arranged in the n-th horizontal row using the second multi-guide 400, the strands 200 can be effectively arranged even when the space is narrow, so that the workability of the compact multi-strand cable Improves.

Although an embodiment of the present invention has been described, the spirit of the present invention is not limited to the embodiments presented in the present specification, and those skilled in the art who understand the spirit of the present invention add or change components within the scope of the same idea. Other embodiments may be easily proposed by deletion, addition, and the like, but it will be said that this is also within the scope of the present invention.

100: pipe 200: strand
300: first multi-guide 310: guide head
320: guide leg 400: second multi-guide
410: guide head 420: guide leg
430: wing member 500: upper traction member
600: lower traction member 700: shock absorber
710: case member 711: fastening hole
720: steel wire member 721: steel wire head
722: steel wire body 730: fastening member
731: through hole

Claims (14)

In a cable-stayed bridge cable, a plurality of strands are arranged in a pipe, and a plurality of strands are arranged side by side at the same horizontal position to form one horizontal row, in which a cable is installed in which a plurality of horizontal rows are stacked,
An upper traction member for pulling the strand disposed at the bottom to the upper part of the pylon;
A first multi-guide to be pulled to the upper part of the pylon by the upper traction member while the upper traction member is connected to one side and the strand is connected to the other side;
A lower traction member connected to the other side of the first multi-guide together with the strand and traction the upper traction member, which has moved to the upper part of the pylon, to the lower part of the pylon; And
A second multi-guide that is pulled to the top of the pylon by the upper traction member while the upper traction member is connected to one side and a plurality of strands forming the horizontal row disposed at the lower end of the pipe are simultaneously connected to the other side. ;
Cable installation device comprising a. The method of claim 1,
A cable installation device provided with a bendable buffer unit between at least one of the multi-guides and the strand so that a predetermined angle is formed between the multi-guide and the strand. The method of claim 2,
A cable installation device including a case member having a fastening hole formed therein, and a steel wire member connected to both ends of the case member to be bent at a predetermined angle. The method of claim 3,
A cable installation device comprising a fastening member inserted and fixed to both ends of the case member and having a through hole so that the steel wire member can penetrate therethrough. The method of claim 4,
A cable installation device in which a deformable steel wire head is formed on the steel wire member to prevent separation from the fastening member after the steel wire member passes through the through hole. The method of claim 5,
When the steel wire head is deformed, the cable installation device in which the steel wire head has a relatively larger width than the inner diameter of the through hole. The method of claim 4,
A cable installation device in which a steel wire body spaced apart from the inner circumferential surface of the through hole is formed in the steel wire member so that the steel wire member and the fastening member can rotate relative to each other. The method of claim 1,
A guide head to which any one of the traction members is connected is formed on one side of at least one of the multi-guides, and a plurality of guide legs are formed on the other side,
A cable installation device in which the plurality of guide legs are arranged to have mutual inclinations. The method of claim 8,
A cable installation device in which a plurality of the guide legs are arranged to form a mutual step difference. The method of claim 9,
A cable installation device in which a wing member is formed on the second multi-guide to prevent rotation of the second multi-guide by being supported by the previously arranged strands. The method of claim 10,
The wing member is a cable installation device that is disposed so as to form a step difference with the guide leg. delete In a cable-stayed bridge cable, in the method of installing a cable in which a plurality of strands are arranged in a pipe, the plurality of strands are arranged side by side at the same horizontal position to form one horizontal row, and the horizontal rows are stacked in n layers. ,
Sequentially arranging the strands up to the n-2th horizontal row inside the pipe;
arranging the strands in the n-1th horizontal row; And
simultaneously disposing a plurality of the strands in an n-th horizontal row;
Including,
Arranging the strands in the n-1th horizontal column,
arranging the strands in a manner alternating left and right of the n-1th horizontal column; And
pulling the strand and the lower traction member upward together using a first multi-guide when the last strand in the n-1th horizontal row is disposed;
Cable installation method comprising a. The method of claim 13,
The step of simultaneously disposing a plurality of the strands in the n-th horizontal column,
Connecting an upper traction member to the lower traction member to traction downward;
Connecting a second multi-guide to the upper traction member; And
Connecting a plurality of the strands to the second multi-guide, pulling the second multi-guide upward, and simultaneously disposing the plurality of strands in an n-th horizontal row;
Cable installation method comprising a.

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