KR101952156B1 - Wire system for replacing sloped cable and method for replacing sloped cable - Google Patents

Abstract

A wire system for cable-stayed bridge cable replacement, the cable system for cable-stayed bridge cable replacement comprising: a sheave portion installed above a connection position of an existing cable in the main tower; A plurality of wires arranged in two rows including a first row and a second row along the upper side of the existing cable array position, the two rows being connected through the sheave; A winch portion which is installed in the bridge girder and which winds up the wire over the first row section and unwinds the second row section with respect to the first row section, A plurality of first ropes connecting the existing cable or the new cable to the wire in the first column and spaced apart from each other; And a plurality of second ropes connecting the existing cable or the new cable to the wire in the second column and spaced apart from each other, wherein each of the plurality of first ropes has one end fixed to the wire And the other end fixedly grasps any one of the existing cable and the new cable, and each of the plurality of second ropes has a first end rotatably gripping the wire so as to give a degree of freedom of longitudinal movement of the wire, Either the existing cable or the new cable is fixedly held.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable system for replacing a cable-stayed bridge cable system and a cable-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable system for cable-stayed bridges and a method for replacing cable-stayed bridges.

The cable-stayed bridge includes a pylon, a bridge girder, and a plurality of sloped cables which are obliquely laid and connect the bridge girder to the pylon. For such cable-stayed bridges, it may be necessary to improve the bridge restoration / performance due to natural disasters and ship collision as well as structural deterioration due to the long-term use of bridges.

In this regard, conventionally, oblique cables (existing cables) to be demolished have been separated from pylons and bridge girders by using large cranes, and oblique cables (new cables) to be newly installed are laid on the pylons and bridge girders. However, according to the cable replacement construction, unlike the new installation of the cable, the installation was difficult due to interference with the other installed cables. Also, when lifting a new cable to be replaced with a large crane, it is difficult to secure a large number of support points through a large crane, resulting in excessive sagging of the new cable, thereby increasing the possibility of interference with other installed cables .

As a technique for improving the above-described conventional inclined cable replacement method, U.S. Patent Publication No. 9021644 discloses a temporary hanger for replacing an inclined cable and a method for replacing a inclined cable using the temporary hanger. According to the above improvement technique, the temporary hanger is disposed on the existing oblique cable located on the upper side of the oblique cable to be replaced and is moved along the existing oblique cable in a state of supporting the oblique cable to be replaced to dismantle the oblique cable to be replaced, The temporary hanger supports the new oblique cable newly installed and moves along the existing oblique cable to install the new oblique cable.

However, the provisional hanger according to the above-mentioned improvement technique is a load that exceeds the predetermined design load by imposing the weight of the new slant cable to be newly installed on the existing slant cable to which the (temporary hanger) is installed, its own weight and other additional loads . In addition, since the temporary hanger is installed on the existing oblique cable and moves along the existing oblique cable, the surface of the existing oblique cable can be damaged and the quality of the existing oblique cable can be degraded. In addition, since the temporary hanger is attached to a conventional oblique cable located on the upper side of the oblique cable to be replaced, there is a limit in which it can not be utilized when the oblique cable located on the uppermost side needs to be replaced.

It is an object of the present invention to solve the problems of the prior art described above, and it is therefore an object of the present invention to provide a method and apparatus for easily changing an oblique cable located at an uppermost position without using large equipment, And can easily replace the oblique cable, and a method for replacing a cable-stayed bridge cable.

It is to be understood, however, that the technical scope of the embodiments of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to a first aspect of the present invention, there is provided a cable system for replacing a cable-stayed bridge cable, the cable system comprising: a sheave portion installed above a connecting position of an existing cable in the pivot tower; A plurality of wires arranged in two rows including a first row and a second row along the upper side of the existing cable array position, the two rows being connected through the sheave; A winch portion which is installed in the bridge girder and which winds up the wire over the first row section and unwinds the second row section with respect to the first row section, A plurality of first ropes connecting the existing cable or the new cable to the wire in the first column and spaced apart from each other; And a plurality of second ropes connecting the existing cable or the new cable to the wire in the second column and spaced apart from each other, wherein each of the plurality of first ropes has one end fixed to the wire And the other end fixedly grasps any one of the existing cable and the new cable, and each of the plurality of second ropes has a first end rotatably gripping the wire so as to give a degree of freedom of longitudinal movement of the wire, Either the existing cable or the new cable can be fixedly held.

According to a second aspect of the present invention, there is provided a method of replacing a cable-stayed bridge cable, comprising the steps of: (a) dismantling an existing cable using a wire system for replacing a cable-stayed bridge cable; And (b) fixing each of the one end and the other end of the new cable to each of the main tower and the bridge girder, wherein in the step (a), the winch part The wire is pulled out along the second row section while being wound, and the existing cable to be disassembled is separated from the main tower and moved onto the bridge girder, and the wire is wound on the first row section, The new cable to be newly installed is placed at the arrangement position of the existing cable disassembled from the bridge girder.

A cable system for replacing a cable-stayed bridge cable according to a third aspect of the present invention comprises: a sheave part installed above a connection position of an existing cable in the main tower; A plurality of wires arranged in two rows including a first row and a second row along the upper side of the existing cable array position, the two rows being connected through the sheave; A winch part installed on the bridge girder and winding the wire over the second row section while being unwound with respect to the first row section; A plurality of first ropes connecting the new cables to the wires in the first column and spaced apart from each other; And a plurality of second ropes connected to the wires in the second row and spaced apart from each other, wherein each end of each of the plurality of first ropes fixedly grasps the wire, And the other end fixedly grasps the new cable, and one end of each of the plurality of second ropes fixes and holds the wire, and the other end fixes and holds the existing cable.

According to a fourth aspect of the present invention, there is provided a method of replacing a cable-stayed bridge cable, comprising the steps of: (a) dismantling an existing cable using a wire system for replacement of a cable-stayed bridge cable; And (b) fixing each of the one end and the other end of the new cable to the main tower and the bridge girder respectively.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the cable system for cable-stayed bridge replacement according to the first aspect of the present invention and the cable-cable-cable replacement method according to the second aspect of the present invention, the cable can be easily replaced without the need for a large- Since the existing cable or the new cable is supported and moved on the wire instead of the cable, the cable can be efficiently replaced without deteriorating the quality of the other cable, and the uppermost cable in which no other cable exists on the upper side can be easily replaced. Further, since the wires are installed in two rows and the existing cable or the new cable is gripped and moved at the other end of the first rope extending from each of the two rows and the other end of the second rope, the burden load acting on the wire The capacity of the winch portion can be reduced and the dismantling of the existing cable and the lifting of the new cable can be stably performed. Further, since the existing cable or the new cable is supported on the wire by the plurality of first ropes and the second ropes, it is possible to form a plurality of lifting points, so that the distortion of the existing cable or the new cable is minimized, Can be accomplished.

According to the cable system for replacing a cable-stayed bridge cable according to the third aspect of the present invention and the method for replacing a cable-stayed bridge cable according to the fourth aspect of the present invention, disassembly of an existing cable and installation of a new cable can be simultaneously performed. Can be shortened. In addition, since the new cable is supported by the plurality of first ropes and newly installed, it is possible to form a plurality of lifting points, thereby minimizing the deformation of the new cable and establishing a new cable.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a new cable disposed by a cable system for replacing a cable-stayed bridge cable according to an embodiment of the present invention; FIG.
FIG. 2 is a schematic conceptual view illustrating the disassembly of an existing cable by a wire system for replacing a cable-stayed bridge cable according to an embodiment of the present invention.
FIG. 3 is a schematic conceptual view showing a new cable arranged by a wire system for replacing a cable-stayed bridge cable according to an embodiment of the present invention.
4 is a schematic cross-sectional view of a wire-stayed bridge cable replacement system according to one embodiment of the present disclosure in accordance with AA of FIG.
FIG. 5 is a schematic conceptual view illustrating a step of dismantling an existing cable of a cable-stayed bridge cable replacement method according to an embodiment of the present invention.
FIG. 6 is a schematic view illustrating a step of preparing a sheave portion, a wire, and a winch portion of a cable-stayed bridge cable replacement method according to an embodiment of the present invention.
FIG. 7 is a side view showing a step of connecting a part of a plurality of first ropes and a part of a plurality of second ropes to a new cable and a wire of a cable-stayed bridge cable replacement method according to an embodiment of the present invention. FIG.
FIG. 8 is a schematic view illustrating a step of winding up a wire in a first row and winding the wire in a second row by a winch of a cable-stayed bridge cable replacing method according to an embodiment of the present invention .
FIG. 9 is a diagram illustrating a method of replacing a part of a plurality of first ropes and a plurality of second ropes in a method of replacing a cable-stayed bridge cable according to an embodiment of the present invention, Fig. 3 is a schematic view showing the arrangement of a new cable by repeating the steps of winding up the cable.
FIG. 10 is a schematic view showing a state in which an existing cable is disassembled and a new cable is disposed by a wire system for replacing a cable-stayed bridge cable according to another embodiment of the present invention.
11 is a schematic cross-sectional view of a wire-stayed bridge cable replacement system according to another embodiment of the present application.
FIG. 12 is a schematic conceptual view illustrating a step of installing a sheave portion, a wire, and a winch portion of a cable-stayed bridge cable replacement method according to another embodiment of the present invention.
FIG. 13 is a cross-sectional view illustrating a cable replacement method according to another embodiment of the present invention in which a plurality of second ropes are connected to an existing cable and a wire of a second row section, and a part of the plurality of first ropes And FIG. 5 is a schematic view showing the operation of connecting and installing the step of FIG.
FIG. 14 is a schematic conceptual view illustrating a step of winding up a wire in a second row while winding wires of a cable-stayed bridge cable replacement method according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

In the description of the embodiments of the present invention, the term (upper side) related to direction or position is set based on the arrangement state of each structure shown in the drawings. For example, referring to Fig. 1, the 12 o'clock direction can be the upper side or the like as a whole.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable system for cable-stayed bridges and a method for replacing cable-stayed bridges.

First, a description will be given of a wire system for cable-stayed bridge cable replacement (hereinafter referred to as "the present system") according to an embodiment of the present application.

Fig. 1 is a schematic conceptual view showing the arrangement of a new cable by the present system, Fig. 2 is a schematic conceptual view showing the disassembly of an existing cable by the present system, and Fig. 3 Fig. 4 is a schematic cross-sectional view of the present system according to AA of Fig. 1; Fig. For reference, the conventional cables disassembled in Figs. 1 and 4 are indicated by dotted lines.

1, the present system is applicable to the replacement of a cable 95 connecting a bridge girder of a cable-stayed bridge with the main tower 99. [ Hereinafter, a cable 95 to be disassembled among a plurality of cables 95 is referred to as a conventional cable 91 and a cable to be newly installed to replace the existing cable 91 is referred to as a new cable 94, .

Referring to FIG. 1, the system includes a sheave portion 11. The sheave portion 11 is installed on the top of the main tower 99 above the connection position of the existing cable 91. Here, the existing cable refers to a cable corresponding to the replaceable one of the pre-installed cables (inclined cables). The existing cable 91 may be connected at one end to the bridge girder and at the other end to the main tower 99. The sheave portion 11 is installed above the point where the other end of the existing cable 91 and the main tower 99 are coupled .

1 and 2, the present system includes a pulling wire. The wires 12 are arranged in two rows along the upper side of the existing cable 91 arrangement position. Referring to FIG. 2, the two columns include a first column 121 and a second column 122. Further, the two rows are connected through the sheave portion 11. In other words, the wire 12 is extended from the winch portion 13 to the sheave portion 11 (one row portion) as described below and covers a part of the sheave portion 11 and extends to the winch portion 13 Section) to be arranged in two rows. Illustratively, the sheave portion 11 may include a first sheave 111 and a second sheave 112. However, the specific configuration of the sheave portion 11 is not limited to this, and may be implemented by various known sheave structures or various sheave structures that are contemplated in the future. In addition, the sheave portion 11 can be installed in the main tower 99 through various structures that can be understood by those skilled in the art. For example, the sheave portion 11 may be fixed by an anchor structure provided on the main tower 99, but the present invention is not limited thereto. As another example, the sheave portion 11 may be installed in a form connected to a member surrounding at least a part of the main tower 99.

1, the present system includes a winch portion 13. As shown in Fig. The winch portion 13 is installed in the bridge girder. Illustratively, the winch portion 13 can be installed in a form mounted on a bridge girder. 2 and 3, the winch portion 13 may be formed by unwinding the wire 12 with respect to the two-row section 122 while winding the wire 12 around the one-row section 121, 12 are wound around the first row section 121 while being wound around the second row section 122.

2, when the wire 12 is wound around the first row section 121 and then wound around the second row section 122, the first row section 121 can move downward toward the winch section 13 And the second row section 122 can move toward the sheave section 11. [ 3, when the wire 12 is wound around the first row section 121 and then wound around the second row section 122, the first row section 121 moves toward the sheave section 11 And the second row section 122 can move downward toward the winch section 13. [ Illustratively, the winch portion 13 may include a first winch 131 and a second winch 132. However, the configuration of the winch portion 13 is not limited to this, and as another example, the winch portion 13 may be formed of one winch. The winch portion 13 is formed by winding the wire 12 in the first row section 121 as the wire 12 is wound from the second row section 122 or conversely winding the wire 12 from the first row section 121, (122). ≪ / RTI >

2 and 3, the system includes a plurality of first ropes 14 spaced apart from each other in a first row section 121. A plurality of first ropes (14) connect the existing cable (91) or the new cable (94) to the wire (12). Here, the new cable refers to a cable newly installed in place of the existing cable after releasing the existing cable corresponding to the replacement target. 2 to 4, each of the plurality of first ropes 14 has one end 141 fixedly holding the wire 12 and the other end 142 being connected to either the existing cable 91 or the new cable 94 Fix one finger. This is because when the conventional cable 91 is dismantled, the first rope 14 fixes the existing cable 91 (see FIG. 2), and when the new cable 94 is installed, It means that the cable 94 is fixedly gripped (see Fig. 3).

The first rope 14 is interlocked with the movement of the first row section 121 toward the winch section 13 when the first row section 121 is wound The first rope 14 having one end 141 fixedly held on the first rope 121 can be moved toward the winch portion 13 and the conventional rope 14 fixed to the other end 142 of the first rope 14 Or the new cable 94 can be moved toward the winch portion 13. [

When the first row section 121 is unwound (refer to FIG. 3), one end 141 of the first row section 121 is inserted into the first row section 121 in cooperation with the movement toward the sheave section 11, The first fixed rope 14 can be moved toward the sheave portion 11 so that the existing cable 91 or the new cable secured to the other end 142 of the first rope 14 94) can be moved toward the sheave portion (11). Accordingly, it can be said that the existing cable 91 or the new cable 94 is moved in the same direction as the moving direction of the wire 12 in the first row section 121.

2 and 3, the system includes a plurality of second ropes 15 spaced apart from each other in a two-row section 122. The second ropes 15 are spaced apart from each other. The plurality of second ropes 15 connect the existing cable 91 or the new cable 94 to the wire 12 in the second row section 122. The plurality of second ropes 15 are rolled so that one end 151 gives the wire 12 a degree of freedom of movement in the longitudinal direction. In other words, unlike the first rope 14 which fixes and holds the wire 12 so as to be dependent on the movement of the wire 12 in the first row section 121, It is possible to grasp the wire 12 in such a manner that it does not depend on the movement of the wire 12 in the wire 122.

By way of example, and with reference to FIG. 4, the rolling grasp may be accomplished by a roller unit 15111 that is in rolling contact with at least a portion of the wire 12. 4, a plurality of (for example, two) roller units 15111 are arranged on each of the upper and lower sides of the wire 12, but the arrangement position and the number of the roller units 15111 are limited to this It does not. For example, the roller unit 15111 can support (hanging) the second rope 15 in such a manner that the roller unit 15111 is in rolling contact with at least one of the upper portions of the wire 12 in a rolling manner.

The other end 152 of each of the plurality of second ropes 15 fixedly grasps any one of the existing cable 91 and the new cable 94. 2), and when the new cable 94 is installed, the second rope 15 is connected to the new cable 91, (See Fig. 3).

As described above, in the case of the first rope 14, both the cable and the wire 12 are fixedly gripped in the first row section 121 while the second rope 15 is fixedly gripped in the second row section 122 The wire 12 is rolling-grasped. As a result, when the wire 12 is wound on the winch portion 13 side in the first row section 121, the first rope 14 and the second rope 15 are connected to the cable (either the existing cable or the new cable) And is moved toward the winch portion 13 in a state of being fixedly gripped. Conversely, when the wire 12 is pulled toward the sheave portion 11 side in the first row section 121, the first rope 14 and the second rope 15 are fixed to the cable (either the existing cable or the new cable) And moves toward the sheave portion 11 in a gripped state.

According to this system, since the existing cable 91 or the new cable 94 is moved using the wire 12 without using the existing cable 95, the quality of the other cable 95 The cable can be replaced efficiently without deterioration, and the replacement of the uppermost cable having no other cable on the upper side can be easily performed.

The first rope 14 and the second rope 15 are connected to each other by an existing cable 91 or a new cable 95 so that the existing cable 91 or the new cable 94 is located outside the plane on which the other cables 95 are disposed, And can be set to a length for supporting the new cable 95.

Referring to FIG. 1, cables 95 of the cable-stayed bridge can be arranged to be included in one plane. According to the present invention, in order to prevent interference with other installed cables, the existing rope 91 or the new rope 95, which is to be disassembled, is moved to a position outside the out-of-plane surface of the first rope 14) and the length of the second rope 15 can be adjusted (set). For example, when the first row section 121 and the second row section 122 are formed symmetrically with respect to the plane on which the cables are disposed, the length of the first rope 14 is longer than the length of the second rope 15 The first rope 14 and the second rope 15 are fixed together by setting the length of the second rope 15 to be shorter than the length of the first rope 14 (see Figs. 2 to 4) An environment in which the cable to be gripped moves on the outside of the plane can be provided.

In addition, the present system has a structure in which one end of one of the plurality of first ropes 14 and one end of one of the plurality of second ropes 15 are arranged so as to maintain a distance between the first row section 121 and the second row section 122 And may include a plurality of auxiliary ropes 16 interconnecting each other. The first row section 121 and the second row section 122 are separated from each other by a predetermined distance or more through the auxiliary rope 16 even if external factors such as winds act on the first row section 121 and the second row section 122, Can be prevented. The second rope 15 rolling the wire 12 in the second row section 122 through the auxiliary rope 16 can also be moved more immediately to the movement of the wire 12 in the first row section 122 (Dependent).

2 to 4, the other end 142 of one of the plurality of first ropes 14 and the other end 152 of one of the plurality of second ropes 15 are connected to the same May be connected to grip the same portion of the new or new cable (94). 2 to 4, the auxiliary rope 16 includes a first rope 14 and a second rope 16, each of which supports the other end 142, 152 of the first cable 14, By connecting one end of the second rope 15 with one end, it is possible to have a triangular connection relationship.

Alternatively, although not shown in the drawings, the other end 142 of one of the plurality of first ropes 14 is connected to a portion holding the existing cable 91 (or the new cable 94) and a plurality of second ropes 15 may be different from each other in a portion where the other end 152 grips the existing cable 91 (or the new cable 94). For example, the first rope 14 and the second rope 15 can grip the cable alternately according to a predetermined rule.

2, in the case where the existing cable 91 to be disassembled is to be separated from the main tower 99 and moved onto the bridge girder, the winch portion 13 is moved to the first row section 121 and wound around the second row section 122. As shown in FIG. In other words, when the other end of each of the plurality of first ropes 14 and the other end of each of the plurality of second ropes 15 grasp the existing cable 91, the winch portion 13 moves the wire 12 in one row Can be wound around the section 121 while being wound around the second section 122. A plurality of first ropes 14, an existing cable 91 and a plurality of second ropes 15 are moved toward the winch portion 13 in accordance with the winding of the first row section 121, as described above, So that the releasing process in which the existing cable 91 is gradually pulled down onto the bridge girder on which the winch portion 13 is located can be proceeded.

3, when the new cable 94 to be newly installed is moved from the bridge girder and connected to the main tower 99, the winch portion 13 connects the wire 12 to the first row section 121, And wound around the second row section 122 while being unwound. In other words, when the other end of each of the plurality of first ropes 14 and the other end of each of the plurality of second ropes 15 grasp the new cable 94, the winch portion 13 moves the wire 12 in one row And can be wound around the second row section 122 while being unwound with respect to the section 121. [ A plurality of first ropes 14, an existing cable 91 and a plurality of second ropes 15 are disposed on the main tower 99 in accordance with the winding of the first row section 121, The new cable 94 can be pulled up from the bridge girder side to the main tower side.

The system is constructed such that the wires 12 are installed in two rows and the existing cable 91 or the new cable 94 is extended from the two columns (the first row section 121 and the second column section 122) And the movement of the existing cable 91 and the new cable 94 is shifted in the horizontal direction by the two ends of the first cable 14 and the second cable 15. [ The load on the wire 12 can be reduced and the capacity of the winch portion 13 can be reduced as compared with the case where the wire is one row.

That is, one end of the first rope 14 is fixedly grasped (completely fixed) at one end of the first rope 14 and one end of the second rope 15 is grasped by the rolling grasper The capacity of the winch portion 13 can be reduced and the lifting of the existing cable 91 or the new cable 94 can be performed stably.

Further, according to the present system, by adjusting the length of the first rope 14 and the length of the second rope 15, the existing cable 91 or the new cable 94 is lifted out of the plane, Interference with the other cable 95 can be easily avoided.

Hereinafter, a method for replacing a cable-stayed bridge cable using the above-described system (hereinafter referred to as " the present cable replacement method ") can be provided. It should be noted that the same reference numerals are used for the same or similar components as those described in the above-described system, and redundant explanations will be simplified or omitted.

The present cable replacement method includes disassembling the existing cable 91 and disposing a new cable 94 using the above-described system.

In the step of disassembling the existing cable 91 and disposing the new cable 94, the winch portion 13 is wound around the first row section 121 and the second row section 122 while winding the wire 12 , The existing cable 91 to be disassembled is separated from the main tower 99 and moved onto the bridge girder. Alternatively, in the step of disassembling the existing cable 91 and disposing the new cable 94, the winch portion 13 may be used to connect the wire 12 to the second row section 122 while drawing the wire 12 to the first row section 121 And a new cable 94 to be newly installed is disposed at an arrangement position of the existing cable 91 which has been disassembled from the bridge girder.

More specifically, the step of disassembling the existing cable 91 and disposing the new cable 94 may include dismantling the existing cable 91 using the present system for the existing cable 91 .

FIG. 5 is a schematic diagram showing a step of dismantling an existing cable of the present cable replacement method from the upper side.

5, the step of disassembling the existing cable 91 includes a step of disposing the sheave portion 11, the wire 12, the winch portion 13, the plurality of first ropes 14 ) And a plurality of second ropes (15).

In the step of preparing the sheave portion 11, the wire 12, the winch portion 13, the plurality of first ropes 14 and the plurality of second ropes 15 provided corresponding to the existing cable 91, (11) may be disposed above the point where the other end of the existing cable (91) to be disassembled and the main tower (99) are coupled. Further, at this stage, the wires 12 may be arranged in two rows along the upper side of the conventional cable 91. [ The winch portion 13 can be arranged so as to rotate, wind, and wind this wire 12.

In this step, the plurality of first ropes 14 have a first end 141 fixedly holding the wire 12 and the other end 142 fixedly holding the existing cable 91, Respectively. In this step, the plurality of second ropes 15 are arranged such that one end 151 rotatably supports the wire 12 and the other end 152 fixedly grasps the existing cable 91, Respectively. Thereby, the step of preparing the sheave portion 11, the wire 12, the winch portion 13, the plurality of first ropes 14 and the plurality of second ropes 15 provided corresponding to the existing cable 91 May be the same or similar to those shown in Fig.

5, in the step of disassembling the existing cable 91, the wire 12 is wound around the first row section 121 by the winch section 13 while being wound around the second row section 122 And separating the existing cable 191 to be disassembled from the main tower 99 and moving it onto the bridge girder.

The first cable section 91 connected to the first row section 121 can be moved downward by the first rope 14 and the first cable section 91 connected to the existing cable 91 moved downward The second rope 15 can also be moved downward. The plurality of first ropes 14 and the plurality of second ropes 15 can be sequentially moved toward the winch portion 13 and the conventional cable 191 can be pulled down to the winch portion 13 side have.

The plurality of first ropes 14 and the plurality of second ropes 15 are moved toward the winch portion 13 by the winding of the wire 12 to the first row section 121 of the winch portion 13 The cable 12 and the conventional cable 91 can be sequentially separated. For example, the plurality of first ropes 14 and the plurality of second ropes 14 may be sequentially arranged from the wire 12 and the existing cable 91 before the wire 12 is wound into the winch portion 13 . ≪ / RTI > Illustratively, the separation of the first rope 14 and the second rope 15 from the first rope 14 can be performed by an operator.

The step of disassembling the existing cable 91 and disposing the new cable 94 may include disposing the new cable 94 using the present system described above with respect to the new cable 94. [

Fig. 6 is a schematic view showing the step of preparing the sheave portion, the wire and the winch portion of the present cable replacement method from the upper side.

6, the step of disposing the new cable 94 includes the steps of preparing the sheave portion 11, the wire 12 and the winch portion 13 provided corresponding to the disposition position of the disassembled existing cable 91 . ≪ / RTI >

At this stage, the sheave portion 11 can be disposed above the point where the other end of the disassembled existing cable 91 is coupled with the main tower 99. Also, at this stage, the wire 12 may be arranged in two rows along the upper side of the position where the disassembled conventional cable 91 was disposed. Further, the winch portion 13 can be arranged so as to wind or unwind the wire 12 arranged as described above. At least one of the sheave portion 11, the wire 12 and the winch portion 13 may be used as it is in the step of dismantling the conventional cable 91 described above.

FIG. 7 is a schematic diagram showing a step of connecting and installing a part of a plurality of first ropes and a plurality of second ropes to a new cable and wire of the present cable replacement method.

7, the step of disposing a new cable 94 includes connecting a part of the plurality of first ropes 14 and a part of the plurality of second ropes 15 to the new cable 91 and the wire 12 And a step of installing the device. 7, the step of disposing a new cable 94 may include the step of disposing a new cable 91 and one of a plurality of first ropes 14 and a plurality of second ropes 15 And a step of connecting and installing one of them.

7, one of the plurality of first ropes 14 and one of the plurality of second ropes 15 is shown installed for the new cable 91 and the wire 12, The number of the first rope 14 and the second rope 15 provided on the new cable 91 and the wire 12 in the first and second ropes 14 and 15 is not limited to the number of the first rope 14 and the second rope 15, Some of them can be installed on the new cable 91 and the wire 12 at the same time.

FIG. 8 is a schematic diagram showing a step of winding up the wire in two rows while the wire is being wound around the first row by the winch of the present cable replacement method.

7 and 8, the step of disposing of the new cable 94 may include attaching a new cable 94 and wire 12 to a next portion of the plurality of first ropes 14 and a second plurality of ropes 15 The wire 12 may be wound around the second row section 122 while the wire 12 is being pulled out from the first row section 121 by the winch section 13 so that the next part of the wire 12 may be additionally installed.

(For example, first) first rope 14 and some (e.g., first) rope 14 that were initially installed in the new cable 94 and wire 12 by unwinding to the first row section 121, The second rope 15 of the new rope 15 can be moved upward toward the main tower 99 and thus the new rope 14 held by the other end of each of the first rope 14 and the second rope 15, The one end of the main shaft 94 can be moved toward the main tower 99. Also at this stage the first rope 14 of the next part (e.g. second) and the second rope 15 of the next part (second, for example) are attached to the new cable 94 and wire 12, The new cable 94 is gripped by the first rope 14 and the second rope 15 and can be moved toward the main tower 99. [

9 is a view showing a step in which a part of a plurality of first ropes and a part of a second rope are connected to each other, and a step in which the wire is wound around the first row section and the second row section is wound, Is a schematic conceptual view showing a state in which it is viewed from above.

Connecting and installing a part of the plurality of first ropes (14) and a part of the plurality of second ropes (15) to the new cable (91) and the wire (12) The step of winding the wire 12 with respect to the first row section 121 by the winch section 13 and winding the wire 12 with respect to the second row section 122 is performed by moving the new cable 94 from the existing cable 91, To be placed at the arrangement position of "

9, by repeating the above steps, the new cable 94 is sequentially gripped by the first rope 14 and the second rope 15 in a direction from one end thereof toward the other end, And the one end thereof can reach the pylon 99. [0064] As shown in FIG.

In addition, the present cable replacement method may include fixing each of the one end and the other end of the disposed new cable 94 to the main tower 99 and the bridge girder, respectively. That is, one end of the new cable 94 may be fixed to the main tower 99 and the other end thereof may be fixed (fixed) to the bridge girder. The construction and the method of fixing the one end and the other end of the new cable 94 to the main tower 99 and the bridge girder, respectively, will be obvious to those skilled in the art and will not be described in detail. Further, a predetermined tension (calculated) may be given to the new cable 94. [ Such a tensioning process may be accomplished through the same or similar process as the tensioning of the pre-installed cable.

Hereinafter, a cable system for replacing a cable-stayed bridge cable according to another embodiment of the present invention (hereinafter, referred to as a "system according to another embodiment") will be described. It should be noted that the same reference numerals are used for the same or similar components as those described above, and redundant descriptions will be simplified or omitted.

FIG. 10 is a schematic conceptual view of a conventional cable according to another embodiment of the present invention, in which a conventional cable is disassembled and a new cable is disposed, and FIG. 11 is a schematic cross-sectional view of a system according to another alternative embodiment.

Referring to FIG. 10, the system according to another embodiment includes a sheave portion 11. The sheave portion 11 is installed on the top of the main tower 99 above the connection position of the existing cable 91. The existing cable 91 may be connected at one end to the bridge girder and at the other end to the main tower 99. The sheave portion 11 can be installed above the point where the other end of the existing cable 91 and the main tower 99 are coupled.

10, the system according to this alternative embodiment includes a wire 12. 10, the wires 12 are arranged in two rows along the upper side of the existing cable 91 arrangement position. Referring to FIG. 10, the second column includes a first column 121 and a second column 122. The two rows are connected through the sheave portion 11. [ In other words, the wire 12 is extended from the winch portion 13 to the sheave portion 11 (one row portion) as described below and covers a part of the sheave portion 11 and extends to the winch portion 13 Section) to be arranged in two rows. Illustratively, the sheave portion 11 may include two sheaves 111, 112. However, the specific configuration of the sheave portion 11 is not limited thereto.

10, the system according to the present alternative embodiment includes a winch portion 13. [ The winch portion 13 is installed in the bridge girder. Referring to Fig. 10, the winch portion 13 winds the wire 12 about the second row section 122 while drawing the wire 12 about the first row section 121. As shown in Fig. In this case, the first row section 121 can move toward the sheave section 11, and the second row section 122 can move downward toward the winch section 13. [

10 and 11, a system according to another embodiment of the present invention includes a plurality of first ropes 24 spaced apart from each other in a first column 121. A plurality of first ropes (24) connect the new cable (92) to the wire (12). 10 and 11, each of the plurality of first ropes 24 has one end 241 fixedly holding the wire 12 and the other end 242 holding and holding the new cable 92.

When the first row section 121 is pulled out, the first row section 121 is interlocked with the movement toward the sheave section 11 according to the unwinding of the first row section 121, The rope 24 can be moved toward the sheave portion 11 and the new cable 94 fixedly gripped at the other end 242 of the first rope 24 can be moved toward the sheave portion 11. [ Through this, pulling up of the new cable 94 can be realized.

 10 and 11, the system according to another embodiment includes a plurality of second ropes 25 spaced apart from each other in a two-row section 122. [ The plurality of second ropes 25 connect the existing cable 93 to the wire 12 in the second row section 122. One end 251 of the plurality of second ropes 25 fixedly grasps the wire 12 and the other end 252 fixedly grasps the existing cable 93.

Thus, as described above, when the second row section 122 is interlocked with the first row section 121, the second row 25 (251) is fixed to the second row section 122, The conventional cable 93 fixed to the other end 252 of the second rope 25 can be moved toward the winch portion 13. [ Thus, pulling down of the existing cable 93 to the winch 13 side can be realized.

In other words, according to the system according to the present embodiment, the disassembly of the existing cable 92 and the disposing of the new cable 93 can be performed at the same time, so that the air for disassembly and establishment can be greatly shortened.

Hereinafter, a method for replacing a cable-stayed bridge cable using the system according to the present embodiment (hereinafter, referred to as a cable replacement method according to another embodiment) may be provided. It should be noted that the same reference numerals are used for the same or similar components as those described above, and redundant explanations will be simplified or omitted.

FIG. 12 is a schematic conceptual view illustrating a step of installing a sheave portion, a wire, and a winch portion of a cable replacement method according to another embodiment of the present invention, and FIG. 13 is a schematic view illustrating a cable replacement method A plurality of second ropes are connected to the wires of the existing cable and the second row and the wires of the new cable and the first row are connected to a part of the plurality of first ropes. And FIG. 14 is a schematic diagram showing a step of winding up the wire in two columns while winding the wire in one row, and schematically illustrating the wire from the top.

The method for replacing cables according to another embodiment of the present invention includes dismantling an existing cable 92 and disposing a new cable 93 using the system according to another embodiment described above.

12, the step of disassembling the existing cable 92 and disposing the new cable 93 includes a step of disposing the new cable 93 and the sheave portion 11, 12 and the winch portion 13 of the first embodiment.

At this stage, the sheave portion 11 can be disposed above the point where the other end of the existing cable 91 to be disassembled (the other end of the new cable 91 newly installed) and the main tower 99 are connected. Further, at this stage, the wires 12 may be arranged in two rows along the upper side of the conventional cable 91. [ The winch portion 13 can be arranged so as to wind or unwind or rotate the wire 12.

13, the step of disassembling the existing cable 92 and disposing the new cable 93 may include disposing a plurality of second ropes 92 on the wire 12 of the existing cable 92 and the second row section 122 And a part of the plurality of first ropes 24 (for example, first first rope) is connected to the wire 12 of the first cable section 93 and the first row section 121 . In other words, at this stage, a plurality of second ropes 15 of the wire 12 of the second row section 122 may be provided, and the existing cable 92 may be provided at the other end of each of the plurality of second ropes 15. [ Can be gripped. At this stage, a part (at least one or more) of the plurality of first ropes 24 can be installed on the wire 12 of the first row section 121, and a part of the first ropes 24 A part of the new cable 93 can be gripped. Illustratively, one end of the new cable 94 (the portion connected to the main tower 99) or a portion near one end may be held at the other end of the first rope 24.

14, the step of disassembling the existing cable 92 and disposing the new cable 93 includes disposing a plurality of first ropes 92 on the wire 12 of the new cable 92 and the first row section 121 24 and a plurality of second ropes 25 provided on the wire 12 of the existing cable 92 and the second row section 122 are sequentially disposed And winding the wire 12 about the second row section 122 while the wire 12 is being wound around the first row section 121 by the winch section 13 so that the wire 12 can be separated.

A part of the first rope 14 which was initially installed in the new cable 94 and the wire 12 can be moved toward the main tower 99 by winding on the first row section 121 made in this step, Accordingly, the new cable 93 held at the other end of the first rope 14 can be moved toward the main tower 99. [ Further, at this stage, the next part of the first rope 24 can hold another part of the new cable 93. [ The second rope 25 having one end 251 fixedly held in the second row section 122 and the other end 252 of the second rope 25 are wound around the two row section 122 in this step, The existing cable 93 fixedly held on the winch portion 13 can be moved toward the winch portion 13. Thus, it can be pulled down to the winch 13 side of the existing cable 93.

The step of disassembling the existing cable 92 and disposing the new cable 93 may also include disposing a next portion of the plurality of first ropes 24 on the wire 12 of the new cable 93 and the first row section 121 And sequentially separating the plurality of second ropes 25 provided on the wire 12 of the existing cable 92 and the second row section 122.

Accordingly, the plurality of first ropes 24 can sequentially move along the first row section 121 while gripping the new cable 93, and the plurality of second ropes 14 sequentially move the winch section 13 and the plurality of second ropes 14 can be sequentially separated from the wire 12 and the existing cable 91 as they reach the winch portion 13. As a result, lifting (pulling up) of the new cable 93 and dismantling (pulling-down) of the existing cable 93 can be realized.

The next part of the plurality of first ropes 24 is additionally provided on the wire 12 of the first cable section 92 and the first column section 121 and the wire 12 is wound on the first row section 121, And the next part of the plurality of first ropes 24 is additionally installed on the wire 12 of the new cable 93 and the first row section 121 and the existing cable 92 and / The step of successively separating the plurality of second ropes 25 provided on the wire 12 of the second row section 122 is performed in such a manner that the new cable 93 is disposed at the arrangement position of the existing cable 92, Can be repeated until. In addition, the repetition of these steps can be repeated until disassembly of the existing cable 92 is completed.

In addition, the cable replacement method according to another embodiment of the present invention may include fixing each of the one end and the other end of the disposed new cable 93 to the main tower 99 and the bridge girder, respectively.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention.

11:
111: First sheve
112: second shift
12: Wire
121: 1 column section
122: 2 column sections
13: winch part
131: 1st winch
132: 2nd winch
14: 1st rope
141: A part of the first rope
142: the other end of the first rope
15: second rope
151: A part of the second rope
152: the other end of the second rope
16: auxiliary rope
24: first rope
241: A set of first ropes
242: the other end of the first rope
25: second rope
251: A part of the second rope
252: the other end of the second rope
91: Conventional cable
92: Conventional cable
93: New cable
94: New cable
95: Cable
99: pylon

Claims (15)

A cable system for a cable-stayed bridge cable applicable to the replacement of a cable connecting a bridge girder and a pylon,
A sheave portion provided above the connection position of the existing cable in the main tower;
A plurality of wires arranged in two rows including a first row and a second row along the upper side of the existing cable array position, the two rows being connected through the sheave;
A winch portion which is installed in the bridge girder and which winds up the wire over the first row section and unwinds the second row section with respect to the first row section,
A plurality of first ropes connecting the existing cable or the new cable to the wire in the first column and spaced apart from each other;
A plurality of second ropes connecting the existing cable or the new cable to the wire in the second column and spaced apart from each other; And
And a plurality of auxiliary ropes interconnecting one end of one of the plurality of first ropes and one end of the plurality of second ropes so that the spacing between the first column section and the second column section is kept unchanged,
The two rows are arranged so as to be located outside the mutually opposing faces with respect to the face on which the other cables provided with the first column section and the second column section are disposed,
Wherein one end of each of the plurality of first ropes fixedly grasps the wire and the other end fixedly grasps either the existing cable or the new cable,
Wherein each of the plurality of second ropes has a first end rotatably holding one of the existing cable and the new cable in a rolling manner so as to provide a degree of freedom of movement of the wire in the longitudinal direction,
The winch portion
When the existing cable to be disassembled is to be separated from the main tower and moved onto the bridge girder, the wire is wound around the first column section and is wound around the second column section,
When the new cable to be newly installed is moved from the bridge girder and connected to the pylon, the wire is wound around the first column section and wound around the second column section,
The first rope and the second rope are located outside the plane on which the existing cable or the new cable departs from the plane on which the other cables are disposed so as to prevent interference with the other cables, Is set to a supporting length,
Wherein the movement of the second rope is interlocked more immediately with the movement of the wire in the first column compared to the absence of the auxiliary rope by the auxiliary rope. The method according to claim 1,
Wherein the existing cable or the new cable is moved in the same direction as the moving direction of the wire in the first column section. delete delete The method according to claim 1,
Wherein the rolling grasp is made by a roller unit that is rollingly contacted with at least one of the upper portions of the wire. delete The method according to claim 1,
Wherein the other end of one of the plurality of first ropes and the other end of one of the plurality of second ropes are connected to grip the same portion of the existing cable or the new cable. A method for replacing a cable connecting a bridge girder and a pylon,
(a) dismantling an existing cable using a cable system for replacing a cable-stayed bridge cable according to claim 1, and disposing a new cable; And
(b) fixing each of the one end and the other end of the new cable to each of the main tower and the bridge girder,
In the step (a)
The winch portion
The wire is wound around the first column section and is wound around the second column section to separate the existing cable to be disassembled from the main tower and move it onto the bridge girder,
Wherein the new cable is disposed at an arrangement position of the existing cable disassembled from the bridge girder by winding the wire over the second column section while being unwound with respect to the first column section, . 9. The method of claim 8,
The step (a)
(a1) disassembling the existing cable using the wire system for replacing the existing cable with the existing cable; And
(a2) disposing the new cable using the wire system for replacing the cable-stayed bridge cable with the new cable. 10. The method of claim 9,
The step (a1)
(a1-1) preparing the sheave portion, the wire, the winch portion, the plurality of first ropes and the plurality of second ropes provided corresponding to the existing cable; And
(a1-2) The wire is wound around the first column section by the winch section and is wound around the second column section, so that the existing cable to be disassembled is separated from the main tower and moved onto the bridge girder Wherein the step of replacing the cable-stayed cable comprises the steps of: 11. The method of claim 10,
Wherein, in the step (a1-2), the plurality of first ropes and the plurality of second ropes are moved toward the winch portion by the winding of the wire with respect to the first row section of the winch portion, Wherein the cable is sequentially disconnected from the existing cable. 10. The method of claim 9,
The step (a2)
(a2-1) preparing the sheave portion, the wire, and the winch portion provided corresponding to the arrangement position of the disassembled existing cable;
(a2-2) connecting and connecting a part of the plurality of first ropes and a part of the plurality of second ropes to the new cable and the wire; And
(a2-3) The winch portion is provided with a plurality of second ropes, and the wire is connected to the first row and the second row by the winch portion so that the next portion of the plurality of first ropes and the next portion of the plurality of second ropes can be additionally installed on the new cable and the wire And winding up the second row section while unwinding the second row section,
Wherein the step (a2-2) and the step (a2-3) are repeated until the new cable is disposed at an arrangement position of the existing cable disassembled from the bridge girder. A cable system for a cable-stayed bridge cable applicable to the replacement of a cable connecting a bridge girder and a pylon,
A sheave portion provided above the connection position of the existing cable in the main tower;
A plurality of wires arranged in two rows including a first row and a second row along the upper side of the existing cable array position, the two rows being connected through the sheave;
A winch part installed on the bridge girder and winding the wire over the second row section while being unwound with respect to the first row section;
A plurality of first ropes connecting new cables to the wires in the first column and spaced apart from each other; And
And a plurality of second ropes connecting the existing cables to the wires in the second row and spaced apart from each other,
Wherein one end of each of the plurality of first ropes fixedly grasps the wire and the other end fixedly grasps the new cable,
Wherein one end of each of the plurality of second ropes fixedly grasps the wire and the other end fixedly grasps the existing cable. A method for replacing a cable connecting a bridge girder and a pylon,
(a) dismantling an existing cable and disposing a new cable using a wire system for cable-stayed bridge cable replacement according to claim 13; And
(b) securing each of the one end and the other end of the deployed new cable to the main tower and the bridge girder, respectively. 15. The method of claim 14,
The step (a)
(a1) installing the sheave portion, the wire, and the winch portion provided corresponding to the new cable and the existing cable;
(a2) connecting the plurality of second ropes to the existing cable and the wires of the second row section,
Connecting a part of the plurality of first ropes to the wires of the new cable and the first row; And
(a3) the next part of the plurality of first ropes is additionally provided on the new cable and the wire of the first column section, and the plurality of second ropes provided on the existing cable and the wire of the second column section are sequentially separated Winding the wire with respect to the first row section while winding the wire with respect to the first row section by the winch section; And
(a4) a next part of the plurality of first ropes is additionally provided to the new cable and the wire of the first column section, and the plurality of second ropes provided on the existing cable and the wire of the second column section are sequentially separated , ≪ / RTI >
Wherein the step (a3) and the step (a4) are repeated until the new cable is disposed at an arrangement position of the existing cable disassembled from the bridge girder.

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