KR102047956B1 - Construction equipment of bridge and method for constructing bridge using this same - Google Patents

Abstract

Bridge construction equipment according to one embodiment, the frame movable on the first guide rail; A first transfer part disposed in the center of the frame to transfer the upper plate; And a second transfer part disposed on both sides of the frame to transfer a second guide rail, wherein the second guide rail is transferred toward an end of the first guide rail and connected to an end of the first guide rail. have.

Description

Bridge construction equipment and bridge construction method using the bridge construction equipment {CONSTRUCTION EQUIPMENT OF BRIDGE AND METHOD FOR CONSTRUCTING BRIDGE USING THIS SAME}

The present invention relates to a bridge construction equipment and a bridge construction method using the bridge construction equipment, the bridge construction equipment that can be installed by pulling the guide rail and the upper plate (or reinforcement girders horizontally) and the bridge construction method using the bridge construction equipment It is about.

Suspension bridge refers to a bridge that is constructed by laying the main cable hangs over the top of the pylon, arranging the bridge girder between the pylon and the pylon, and connecting the bridge girder with the main cable using a hanger rope.

These suspension bridges are mainly used to connect gorges and rivers to each other, and are also useful for opening hiking trails.

Among the construction of suspension bridges, there are methods for installing bridge girders using marine cranes, lifting cranes, bridge cranes, or lifting jacks.

However, the conventional methods for constructing a suspension bridge have a problem in that it is not easy to install a bridge at a high velocity or to install a bridge in a mountain canyon. In particular, in the case of using a marine crane, there is a problem that a lot of restrictions on the work place because the weight of the lifting material, the lifting height and the like should be considered in the work.

For example, KR 10-2007-0118296, filed on November 20, 2007, discloses a 'suspension bridge construction method'.

An object according to an embodiment of the present invention is a bridge construction equipment capable of inducing air shortening of guide rails and deck constructions of a long bridge to be constructed in a state independent of the influence of the marine climate without disturbing marine traffic, and using the bridge construction equipment. It is to provide a bridge construction method.

An object according to an embodiment is to provide a bridge construction equipment that can be installed to the right position by towing the guide rail and the top plate horizontally and a bridge construction method using the bridge construction equipment.

An object according to an embodiment is to provide a bridge construction equipment that can be a transport path of the top plate when the top plate construction and a part of the bridge structure after completion of the bridge construction and a bridge construction method using the bridge construction equipment. .

The purpose according to an embodiment is to complete the guide rail after the installation of the top plate to ensure the wind stability similar to the completed bridge, bridge construction equipment and the bridge construction equipment that can be moved and installed the top plate even under strong wind It is to provide a bridge construction method using.

An object according to an embodiment is to provide a bridge construction equipment and a bridge construction method using the bridge construction equipment to ensure the flexibility of the process can be easily modified, such as changing the pre-tensioning value in the guide rail fastening state before the top plate construction .

The objective according to an embodiment is that the load by the top plate is transmitted directly to the cable by the cross beam, so that only the axial force due to the cable tension acts on the guide rail, thus preventing the possibility of buckling of the guide rail, and independent of the load applied to the top plate and the guide rail To provide a bridge construction equipment and a bridge construction method using the bridge construction equipment can be easily numerical analysis.

An object according to an embodiment is to significantly reduce the bridge construction cost, and in the case of the suspension bridge is to provide a bridge construction equipment that can be removed and recycled because the guide rail is not subjected to a load and a bridge construction method using the bridge construction equipment.

Bridge construction equipment according to an embodiment for achieving the above object, the frame movable on the first guide rail; A first transfer part disposed in the center of the frame to transfer the upper plate; And a second transfer part disposed on both sides of the frame to transfer a second guide rail, wherein the second guide rail is transferred toward an end of the first guide rail and connected to an end of the first guide rail. have.

According to one side, the frame, the first frame is disposed the center frame; And a front frame connected to the front of the center frame and having the second transfer part disposed thereon, wherein the upper plate is maintained below the center frame, and the second guide rail is maintained below the front frame. have.

According to one side, the first transfer unit, a central gripping member connected to both sides of the center frame; the central gripping member may grip a portion adjacent to the edge of the top plate.

According to one side, the second transfer unit, a front gripping member connected to both sides of the front frame; and the front gripping member may grip a central portion of the second guide rail.

According to one side, the frame, the rear frame is connected to the rear of the center frame and the second transfer unit; further comprising, the second transfer unit, the third holding member connected to both sides of the rear frame; It may further include.

According to one side, the lower surface of the frame is equipped with a roller, the roller is disposed in the connecting portion of the center frame and the front frame and the connecting portion of the center frame and the rear frame, the frame is in the front-rear direction or right and left It may be provided in a shape symmetrical with each other in the direction.

Bridge construction method according to an embodiment for achieving the above object, the step of installing the main tower spaced from the ground; Installing a cable and a cross beam between the ground and the pylon; Coupling a plurality of guide rails to the cross beams; And installing a top plate on the guide rail, wherein the cables are connected to both ends of the cross beams, and the plurality of guide rails may be coupled to positions spaced apart from both ends of the cross beams.

According to one side, in the step of constructing the main tower spaced from the ground, construct a plurality of main tower, install a guide cable between the plurality of main tower, if the load acting on the main tower is symmetrical to remove the guide cable Can be.

According to one side, in the step of installing the top plate on the guide rail, the top plate begins to install when the guide rail is the second guide rail past the main tower, the top plate is installed toward the ground from the main tower Can be.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, it is possible to be installed in a state independent of the influence of the marine climate without disturbing the sea traffic, thereby shortening the air of the guide rail and the top plate hypothesis of the long bridge Can be induced.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, the guide rail and the upper plate can be towed horizontally and installed in the correct position.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, the guide rail may be a transport path of the top plate when the top plate construction, and may be part of the bridge structure after completion of the construction of the bridge.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, after completing the guide rail can be installed to ensure the wind stability similar to the completed bridge by installing the top plate, the movement of the top plate even under strong wind And hypotheses may be possible.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, it is possible to secure the flexibility of the process by easily modifying the pre-tensioning value in the guide rail fastening state before the top plate is laid.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, the load by the upper plate is directly transmitted to the cable by a cross beam (or sleepers), so that only the axial force due to the cable tension acts on the guide rail. The possibility of buckling of the guide rail is prevented, and the load applied to the top plate and the guide rail is independent so that the numerical analysis can be facilitated.

According to the bridge construction equipment and the bridge construction method using the bridge construction equipment according to an embodiment, the bridge construction cost is significantly reduced, the suspension bridge can be removed and recycled because the guide rail is not loaded.

1 is a plan view of a bridge construction equipment according to one embodiment.
2 is a side view of the bridge construction equipment according to one embodiment.
3A and 3B illustrate a state in which the guide rail and the upper plate are transferred by the bridge construction equipment according to one embodiment.
4 is a flowchart illustrating a bridge construction method according to an embodiment.
5A to 5I illustrate a bridge construction process according to the bridge construction method according to one embodiment.
6A to 6E illustrate a process in which a guide rail is coupled to a cable and a cross beam, and a top plate is installed on the guide rail.

Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiment, when it is determined that the detailed description of the related well-known configuration or function interferes with the understanding of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be "connected", "coupled" or "connected".

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description in any one embodiment may be applied to other embodiments, and detailed descriptions thereof will be omitted in the overlapping range.

1 is a plan view of a bridge construction equipment according to one embodiment, Figure 2 is a side view of the bridge construction equipment according to an embodiment, Figures 3a and 3b is a guide rail and the upper plate by the bridge construction equipment according to an embodiment It shows how it is transported.

1 or 2, the bridge construction equipment 10 according to an embodiment may include a frame 100, a first transfer part 200, and a second transfer part 300.

At this time, the bridge construction equipment 10 according to an embodiment is a device for transporting and installing the upper plate (or reinforcement girder) (G) and the guide rail (R), the structure is symmetrical with each other in the front and rear or left and right directions as a whole It can be prepared as.

The front-rear direction may indicate a driving direction or an throttling direction of the frame 100, and the left and right directions may indicate a direction orthogonal to the driving direction of the frame 100 or a direction perpendicular to the throttling direction.

The frame 100 may be provided to be movable in the horizontal direction on the guide rail (R).

In detail, the frame 100 may include a center frame 110, a front frame 120, and a rear frame 130.

The center frame 110 may be, for example, provided in the shape of a rectangular frame and disposed at the center of the entire structure of the frame 100.

In this case, the first transfer part 200 may be disposed in the central frame 110, and the upper plate or the reinforcement girder G may be maintained or stacked below the central frame 110.

In addition, the front frame 120 may be connected to the front of the center frame 110.

The front frame 120 may include a plurality of cantilever beams extending forward from both sides of the center frame 110.

At this time, the front may point to the front in the driving direction of the frame 100, the rear may point to the rear in the driving direction of the frame 100.

The front gripping member 310 of the second transfer part 300 may be disposed in the aforementioned front frame 120, and the guide rail G may be maintained under the front frame 120. In this case, the guide rails G may be maintained in the plurality of cantilever beams, respectively, so that a plurality of guide rails G may be maintained in the front frame 120.

In addition, the rear frame 130 may be connected to the rear of the central frame 110.

The rear frame 130 may include a plurality of cantilever beams extending rearward from both sides of the center frame 110.

In this case, the rear gripping member 320 of the second transfer part 300 may be disposed on the rear frame 130, and the guide rail G may be maintained under the rear frame 130. In this case, the guide rails G may be maintained in the plurality of cantilever beams, respectively, so that a plurality of guide rails G may be maintained in the rear frame 130.

 In addition, the roller 140 may be mounted on the bottom surface of the frame 100, particularly the center frame 110.

The roller 140 is used to move the frame 110 on the guide rail G. Specifically, the roller 140 is connected to the center frame 110 and the front frame 120, and the center frame 110 and the rear frame 130. The connection portion may be arranged to be in contact with the upper surface of the guide rail (R) pre-installed.

In addition, by adding the steering property of the roller 140, it is possible to transfer and construct the guide rail (R) and the upper plate (G) with only one equipment from the upper plate (G) factory to the construction position of the upper plate (G).

However, the configuration for moving the frame 100 is not limited thereto, and any configuration can be used as long as the guide rail R or the upper plate G can be smoothly transferred to the installed point.

As described above, the first transfer part 200 may be disposed in the frame 100, particularly the center frame 110.

The first transfer part 200 is for transferring the upper plate G, and may include a plurality of central gripping members 210, 220, 230, and 240.

The plurality of central gripping members 210, 220, 230, and 240 may be formed of, for example, four central gripping members to grip a portion adjacent to an edge of the upper plate G.

Specifically, in the plurality of central gripping members 210, 220, 230, and 240, two central gripping members 210 and 220 are spaced apart from one side of the central frame 110, and the other side of the central frame 110 is disposed. Two central gripping members 230 and 240 may be spaced apart from each other, and may be disposed symmetrically with respect to a central axis extending along the axial direction.

In addition, the first central gripping member 210 of the plurality of central gripping members includes, for example, a supporting element 212 supporting the lower end of the top plate G and a hydraulic jack 214 connected to the supporting element 212. The top plate G may be gripped or separated by the support element 212 through the actuation control of the hydraulic jack 214.

For example, during transport toward the point where the top plate G is to be installed, the top plate G is gripped by the support element 212, and is separated from the support element 212 when the top plate G is reached. It may be installed in a space between a plurality of pre-installed guide rail (G). The same may be applied to the remaining central gripping members 220, 230, and 240.

However, the shapes of the plurality of central gripping members 210, 220, 230, and 240 are not limited thereto, and any one may be provided as long as the top plate G may be stably transferred. For example, the plurality of upper plates G may be maintained by the plurality of central gripping members 210, 220, 230, and 240.

In addition, the top plate G is transferred by the plurality of central gripping members 210, 220, 230, and 240 in a state in which the top plate G is disposed above the preinstalled top plate G, and the frame 100 is pre-installed. It can travel on the guide rail (R) without interference between the.

In addition, the second transfer part 300 may be disposed in the frame 100, in particular, the front frame 120 and the rear frame 130.

The second transfer part 300 is for transporting the guide rail R, and may include a plurality of front gripping members 310 and a plurality of rear gripping members 320 for gripping a central portion of the guide rail R. FIG. Can be.

The plurality of front gripping members 310 may be provided as, for example, two front gripping members, and may be mounted on both sides of the front frame 120 or each of the plurality of cantilever beams.

Specifically, each front gripping member 310 has a support element 312 supporting the lower end of the guide rail R, a first hydraulic jack 314 and a first hydraulic jack 314 connected to the support element 312. And a second hydraulic jack 316 connected to the backing element 312 spaced apart. At this time, the guide rail R may be gripped or separated by the supporting element 312 through the operation control of the first hydraulic jack 314 and the second hydraulic jack 316.

For example, the guide rail R is gripped by the support element 312 during transport toward the point where the guide rail R is to be installed, and the support element 312 is reached when the point at which the guide rail R is to be installed is reached. It can be disconnected from and connected to the end of the pre-installed guide rail.

Similarly, the plurality of rear gripping members 310 may be provided as, for example, two rear gripping members, and may be mounted on both sides of the rear frame 130 or each of the plurality of cantilever beams.

Specifically, each rear gripping member 320 includes a supporting element 322 supporting the lower end of the guide rail R, a first hydraulic jack 324 and a first hydraulic jack 324 connected to the supporting element 322. And a second hydraulic jack 326 connected to the backing element 322 spaced apart. At this time, the guide rail R may be gripped or separated by the support element 322 through the operation control of the first hydraulic jack 324 and the second hydraulic jack 326.

For example, the guide rail R is gripped by the support element 322 during transportation toward the point where the guide rail R is to be installed, and when the guide rail R is reached, the support element 322 is reached. It can be disconnected from and connected to the end of the pre-installed guide rail.

However, the shapes of the front gripping member 310 and the rear gripping member 320 described above are not limited thereto, and any one may be provided as long as the guide rail R may be stably transported. For example, the plurality of guide rails R may be maintained by the front gripping member 310 and the rear gripping member 320.

In particular, with reference to FIGS. 3A and 3B, the bridge construction equipment 10 according to one embodiment described above may be operated as follows.

At this time, Figure 3a is a view from the top of the bridge construction equipment 10 according to an embodiment and Figure 3b shows a view of the bridge construction equipment 10 according to an embodiment from the bottom.

In particular, referring to FIGS. 3A and 3B, first, after the cable C and the cross beam B (or a sleeper) are installed with respect to the main tower A, the bridge construction equipment 10 according to an embodiment may be installed. The guide rail R, for example, the second guide rail R2, may be loaded and travel along the pre-installed guide rail R, for example, the first guide rail R1.

In this case, the second guide rail R2 may be coupled to an end of the first guide rail R1 after being transferred toward the end of the first guide rail R1 from the top of the first guide rail R1.

Therefore, after installing the first guide rail (R1) in the bridge construction equipment 10 according to an embodiment, and transported along the first guide rail (R1) to install a second guide rail (R2), the second guide rail The construction of the guide rail R can be completed by repeating the operation along the R2 to install the third guide rail.

In addition, after the installation of the guide rail (R) is completed, the bridge construction equipment 10 according to an embodiment may load the top plate (G) to be installed, and may travel along the pre-installed guide rail (R).

At this time, the top plate (G) is the position or the position where the top plate (G) will be installed after transferring the position where the top plate (G) is installed in the space between the guide rail (R) or the space between the first guide rail (R1) It may be installed in the space between the guide rail (R).

Furthermore, after the installation of the guide rails (R) and the upper plate (G) by the bridge construction equipment 10 according to an embodiment is completed, the bridge construction equipment 10 according to an embodiment is replaced with a mobile scaffold, MSS It is natural that concrete can be poured by the method.

As such, the bridge construction equipment 10 according to an embodiment may tow the guide rails R and the upper plate G horizontally necessary for the bridge construction horizontally and install them in place, thereby preventing maritime traffic. It can be installed in a state independent from the influence of the marine climate, which can lead to shortening of air in the guide rail and the top plate of the long bridge. In addition, the guide rail may be a transport path of the upper plate when the upper plate is constructed, and may be part of the bridge structure after the construction of the bridge is completed.

It has been described with respect to the bridge construction equipment 10 according to an embodiment, below will be described a bridge construction method using the bridge construction equipment according to an embodiment.

Figure 4 is a flow chart showing a bridge construction method according to an embodiment, Figures 5a to 5i shows a bridge construction process according to the bridge construction method according to an embodiment, Figures 6a to 6e is a guide rail in the cable and cross beam The process of joining and installing the top plate on the guide rail is shown.

Bridge construction method according to an embodiment may be installed in the right position by towing horizontally to the installation point of the top plate produced at the beginning of the bridge after installing all the cables in the construction of a long bridge, such as a marine suspension bridge.

4, the bridge can be constructed as follows briefly.

First, the main tower is installed to be spaced apart from the ground (S10), and a cable and a cross beam are installed between the ground and the main tower (S20). Then, a plurality of guide rails are coupled to the cross beams (S30) and the upper plate is installed on the guide rails (S40).

In particular, referring to Figures 5a to 5i, specifically can be constructed as follows.

As shown in Figure 5a, the main towers (A1, A2) are installed spaced apart from the ground (O).

At this time, the ground (O) can be loaded with a cable, a cross beam, a guide rail, a top plate, etc. necessary for installing the bridge, the ground (O) is a natural bridge may be an anchorage of the bridge or suspension bridge.

In addition, a plurality of main towers are provided, the first main tower A1 is disposed to be spaced apart from the ground O, and the second main tower A2 is disposed to be spaced apart from the first main tower A1 to the ground O and the first main tower A1. And a bridge may be installed between the second main tower (A2).

In addition, although the first pylon A1 and the second pylon A2 are illustrated as one in the drawing, it is obvious that the first pylon A1 and the second pylon A2 may be a pair of the first pylon A1 and the second pylon A2. Do. Although the first pylon A1 and the second pylon A2 are illustrated in the drawing, the third pylon A3 may be further installed to be spaced apart from the second pylon A2.

As shown in FIG. 5B, a guide cable GC is installed between the upper end of the first pylon A1 and the upper end of the second pylon A2, and between the ground O and the upper end of the first pylon A1. Install the first cable (C1) or the outermost cable to the.

At this time, by the guide cable (GC) to offset the bending moment acting on the pylon can be generated by the asymmetrical construction sequence when the guide rail is installed to prevent the bending of the pylon.

As shown in FIG. 5C, the guide rails R are supplied from the ground O, and are installed from the outside of the ground O. FIG. The guide rail R can be installed using the bridge construction apparatus mentioned above.

At this time, since the first cable C1 and the second cable C2 are installed at both ends of the guide rail R, the shape of the bridge by pre-tensioning the first cable C1 or the second cable C2. Can hold.

As shown in Figure 5d, the cable and guide rail installation is repeated from the ground (O) toward the first pylon (A1).

As shown in Figure 5e, the main span portion is also installed in the same manner as the previous installation direction or the installation direction.

As shown in FIG. 5F, when the guide rails R of the main span become two, or when the guide rails R pass through the first main tower A1 and become the second guide rails R1, the first main tower A1. Install the top plate (G) from the part.

As shown in FIG. 5G, the cable C is installed from the first pylon A1 toward the second pylon A2, and the ground O or the second pylon A2 is installed from the first pylon A1. The top plate (G).

As shown in FIG. 5H, when the load acting on the first main column A1 by the cable C becomes symmetrical, the guide cable GC is removed.

In this case, the cable C, the guide rail R, and the upper plate G may be symmetrically disposed based on the first main tower A1.

As illustrated in FIG. 5I, when the installation of the upper plate G is completed, the cable C, the guide rail R, and the upper plate G are installed in the same manner with respect to the second main tower A2.

For example, if the cable (C), the guide rail (R) and the top plate (G) can be supplied from both sides of the bridge, the bridge construction time can be further shortened, and the shape can be symmetrical about the span. .

Here, the cable-stayed bridge is described as an example, but it is obvious that the suspension bridge can be constructed in the same way.

In particular, referring to Figures 6a to 6e, the guide rail can be coupled to the cable and the cross beam as follows, and the top plate can be installed on the guide rail.

As shown in FIG. 6A, the first cable C1 is connected to both ends of the first cross beam B1.

In this case, an additional guide rail on which the above-described bridge construction equipment is placed may be disposed, and the first cross beam B1 may be connected to an end of the additional guide rail at the ground or the outside of the ground.

In addition, the first cross beam B1 may extend in a direction perpendicular to the throttle, one end of the first cable C1 is connected to both ends of the first cross beam B1, and the other end of the first cable C1 is a main shaft. (Not shown).

Although not specifically shown, it is natural that separate equipment for installing cables and cross beams may be moved on the guide rails which are disposed on the ground or are installed in advance.

As shown in FIG. 6B, the first guide rail R1 is coupled to a position spaced apart from both ends of the first cross beam B1 using the aforementioned bridge construction equipment.

In this case, pre-tensioning may be performed on the first cable C1.

As shown in FIG. 6C, the second guide rail R2 is also installed in the same manner.

Specifically, the second cross beam (B2) is installed on the end of the first guide rail (R1), the second cable (C2) is installed on the second cross beam (B2), and then the bridge construction equipment described above is the first guide The second guide rail R2 is transferred toward the end portion of the first guide rail R1 on the rail R1. When the second guide rail R2 reaches the end of the first guide rail R1, the second guide rail R2 is coupled to the end of the first guide rail R1.

Completion of the installation of the guide rail (R), cable (not shown), and cross beam (B) is as shown in Figure 6d.

As shown in FIG. 6E, when the installation of the guide rails R is completed, the upper plate G is installed on the guide rails R. As shown in FIG. The top plate G may be transported by the bridge construction equipment described above, and the top plate G may be installed from the main column part.

As such, the bridge construction method according to the embodiment can be completed after the cable is installed without using any maritime equipment, whereby it can be constructed without disturbing maritime traffic and independent of the influence of maritime climate. Do.

In addition, the guide rail is installed using the above-described bridge construction equipment, and the vehicle moves forward while making its own travel path. After the guide rail is installed, the above-described bridge construction equipment can be installed by using the upper plate and the air shortening can be realized. .

In addition, after the guide rail is completed, the top plate can be installed to secure wind resistance similar to the completed bridge, and the top plate can be moved and installed even under strong winds, and the load by the top plate is transferred directly to the cable by the cross beam. Therefore, only the axial force due to the cable tension acts on the guide rail, which can prevent the possibility of buckling of the guide rail. In addition, since the load applied to the upper plate and the guide rail is independent, numerical analysis of the bridge may be easy.

As described above, the embodiments of the present invention have been described by specific embodiments, such as specific components, and limited embodiments and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is limited to the above embodiments. Various modifications and variations can be made by those skilled in the art to which the present invention pertains. Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention.

10: bridge construction equipment
100: frame
200: first transfer part
300: second transfer part

Claims (9)

A frame movable on the first guide rail;
A first transfer part disposed in the center of the frame to transfer the upper plate; And
Second conveying parts disposed on both sides of the frame to convey second guide rails;
Including,
The second guide rail is transferred toward an end of the first guide rail and connected to an end of the first guide rail,
The frame,
A center frame in which the first transfer unit is disposed; And
A front frame connected to the front of the center frame and arranged with the second transfer part;
Including,
The upper plate is held below the central frame,
The second guide rail is a bridge construction equipment is maintained on the lower side of the front frame.
delete The method of claim 1,
The first transfer unit,
Central gripping members connected to both sides of the center frame;
Including,
The central gripping member is a bridge construction equipment for holding a portion adjacent to the edge of the top plate.
The method of claim 1,
The second transfer unit,
Front gripping members connected to both sides of the front frame;
Including,
And the front gripping member grips a central portion of the second guide rail.
The method of claim 4, wherein
The frame,
A rear frame connected to the rear of the center frame and arranged with the second transfer part;
More,
The second transfer unit,
Rear gripping members connected to both sides of the rear frame;
Bridge construction equipment further comprising.
The method of claim 5,
The lower surface of the frame is equipped with a roller,
The roller is disposed at the connecting portion of the center frame and the front frame and the connecting portion of the center frame and the rear frame,
The frame is a bridge construction equipment provided in a shape symmetrical with each other in the front and rear direction or left and right directions.
delete delete delete

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