JP2001020225A - Erection method of bridge and equipment therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency of erection work and simplify the structure and lighten its weight. SOLUTION: Individual members 9 for a bridge girder are carried up on a working space 10a on bridge piers by a crane 3. Then, a bridge girder block 9a is set up by means of an assembling device. The bridge girder block 9a is hung up by a lifting equipment 13 installed on a truck 12 of the erection structure 11 and carried to the end of an existing bridge girder 9 with transfer of the erection structure 11. Then, the truck 12 moves to the overhung end of the structure body 11a along traveling rails 16, and subsequently, the lifting equipment 13 is driven to lower the bridge girder 9a to position to the end of the existing bridge girder 9 and additionally connect it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of erection of a bridge capable of improving the efficiency of erection work, simplifying the structure and reducing the weight, especially in a valley, a river with a large flow, or a mountainous area with a low level of land. Related to the device.

[0002]

2. Description of the Related Art FIG. 29 shows an example of a conventional method of erection of a bridge, wherein (a) is a front view and (b) is a top view. This method of overhanging a steel bridge is a method that has been conventionally performed in a mountainous area with little flatland. In this erection method, first, the pier 1 is erected, and the crane 3 and the construction vent 2a are temporarily provided. Subsequently, a bridge girder (truss girder) 6 is erected above the bridge girder, and a traveler crane 7 and a bogie 8 are installed on the bridge girder 6. The traveler crane 7 and the trolley 8 are carried by the crane 3 installed earlier, and have a structure capable of moving on the existing bridge girder 6.

[0005] Below the crane 3, a transport carriage 5 for transporting a single material (bridge girder member) 6 a constituting the bridge girder 6.
And a transfer path 4 on which the transfer carriage 5 moves. The single material 6a is transported to below the crane 3 by the transport cart 5. Subsequently, the single material 6 a for one block of the bridge girder conveyed is sequentially carried up by the crane 3 and placed on the bogie 8 on the bridge girder 6. Next, the truck 8 on which the single members 6a are placed is moved to the vicinity of the traveler crane 7, and the single members 6a on the truck 8 are lifted one by one by the traveler crane 7, and transported to the end of the bridge girder. The construction worker positions and attaches the single material 6a at this construction position.

[0004] All of the single members 6a are attached to the bridge girder 6-1.
When the block has been erected, the traveler crane 7 is moved to the tip of the existing bridge girder 6 again, and the traveling crane 1 is moved in the same manner as described above.
The work of attaching the single material 6a is repeated for each block. Here, since the construction equipment including the traveler crane 7 and the transporting trolley 5 is a large heavy object having a scale of 10 t, the construction vents 2a for supporting the bridge girder 6 on which the construction has been advanced are provided at short intervals and the oblique vents 2b are used. Reinforce the bridge girder itself.

[0005]

However, in the above-mentioned conventional bridge erection method, the single members 6a are lifted by the traveler crane 7 and attached one by one. In addition, since the traveler crane 7 is used, the construction vent 2
a and the oblique vent 2b are required. For this reason, the efficiency of the erection work deteriorates and the structure of the erection device becomes complicated,
There is a problem that the weight increases. In particular, in bad weather such as strong winds or rainy weather, since the single lumber 6a is hung by the traveler crane 7, it is difficult to position the single beam 6a with respect to the end of the bridge girder, making the operation extremely difficult.

The present invention has been made in view of the above, and an object of the present invention is to provide a bridge erection method and apparatus which can improve the efficiency of erection work, or satisfy a condition that the structure is simple and lightweight. Aim.

[0007]

In order to achieve the above object, a bridge erection method according to a first aspect of the present invention is to provide a method for erection of a bridge, in which after a pier is erected, a bridge girder member constituting a pier block is transported to the pier. After assembling the bridge girder block on the pier, the bridge girder block is added to the end of the existing bridge girder to construct the bridge.

In this method of erection of a bridge, first, a pier is erected, and a bridge girder member is transported to the pier using a crane or a lifting facility. Subsequently, the bridge girder block is assembled on the pier, and the assembled bridge girder block is added to the existing bridge girder end. That is, since the bridge girder members are not assembled one by one on the bridge girder but are assembled on the pier and then added to the end of the existing bridge girder, the efficiency of the erection work is improved.

According to a second aspect of the present invention, in the method of erection of a bridge, the bridge girder block assembled on the pier is lifted by a lifting equipment, and the bridge girder is supported together with a support beam structure of the lifting equipment. By moving along the bridge girder, the bridge girder block is transported to the end of the existing bridge girder, and the bridge girder block is added to the end of the existing bridge girder.

Conventionally, since a travel crane was used on a bridge girder, it was difficult to lift and turn in bad weather, and there was a problem that installation and disassembly were troublesome. The bridge girder block is lifted by the lifting equipment, and is moved together with the support beam structure of the lifting equipment (for example, the erection mechanism in the embodiment) to transport the bridge girder block. For this reason, the bridge can be easily erected even in bad weather, and the efficiency of the erection work is improved.

According to a third aspect of the present invention, there is provided the bridge erection method according to the third aspect of the present invention, wherein a work space of a predetermined size is temporarily provided on the pier, and a bridge girder assembling apparatus is provided on the work space. And a bridge girder block is assembled on the work space using the assembling apparatus.

[0012] Since a sufficient area for the erection work cannot be obtained only by the space on the pier, a work space is erected on the pier, and a bridge girder member is assembled on the work space. In addition, an assembling device provided in a work space is used for assembling. In this way, the work of assembling the bridge girder blocks can be performed efficiently, and the efficiency of the erection work is improved.

According to a fourth aspect of the present invention, there is provided a bridge erection apparatus including a crane for lifting a bridge girder member constituting a bridge girder onto a pier, and a lifting facility for lifting a bridge girder block assembled on the pier. And an erection mechanism having a beam structure that moves along an existing bridge girder.

The bridge girder member is carried up to the pier by a crane, and assembled on the pier into a girder block. The assembled bridge girder block is lifted by the lifting equipment and transported to the end of the existing bridge girder by moving the erection mechanism. Here, the bridge girder block is lowered by the lifting equipment, and the bridge girder block is added to the end of the bridge girder. Since the erection mechanism is composed of a lifting facility and a beam structure, the erection mechanism can have a simpler structure and a lighter weight than the conventional travel crane. Therefore, the bridge can be erected without using a temporary vent or an oblique vent. In addition, only one lifting equipment or a plurality of lifting equipment may be provided.

[0015] The lifting of the bridge girder member on the pier is not limited to the crane. For example, it may be carried by a lifting facility or may be delivered from an adjacent erection mechanism during erection (claim 5).

According to a sixth aspect of the present invention, there is provided the bridge erection apparatus, wherein the erection mechanism has an upper portion of the beam structure projecting to the left and / or right side, and , Moving along the upper part of the beam structure.

For example, when a bridge girder block is added to the left side of a bridge pier, a bridge girder block is first assembled from a bridge girder member carried by a crane or the like, and then the bridge girder block is lifted by a lifting facility. Next, the erection mechanism is moved along with the pier and the existing bridge girder together with the lifting equipment. After moving to the end of the bridge girder, stop the erection mechanism, and then move the lifting equipment along the upper part of the beam structure of the erection mechanism. Since the upper part of the beam structure projects to the left, the suspended bridge girder block can be transported to a position where it can be extended beyond the bridge girder end. The same applies when a bridge girder block is added to the right side of the pier.

According to a seventh aspect of the present invention, in the bridge erection apparatus, the erection mechanism further includes an upper portion of the beam structure protruding left and / or right, and the lifting equipment includes: , Fixed to the upper end of the beam structure.

For example, when a bridge girder block is added to the right side of a bridge pier, first, a bridge girder block is assembled from bridge girder members carried by a crane or the like, and then this bridge girder block is lifted by a lifting facility. At this time, the lifting equipment is fixed to the upper end that protrudes to the right,
The erection mechanism is temporarily moved to the left to position the lifting equipment on the bridge girder block. Next, the erection mechanism is moved to the right along with the pier and the existing bridge girder together with the lifting equipment. This allows the suspended bridge girder block to be transported to a position where it can be extended beyond the bridge girder end. The same applies when a bridge girder block is added to the left side of the pier.

The bridge erection device according to claim 8 is the bridge erection device, further comprising: a work space having a predetermined area on the pier; and a bridge girder member provided on the work space to constitute the bridge girder. And an assembling apparatus for assembling.

Providing a work space on the bridge facilitates assembly work. Also, the use of the assembling device makes it easier to handle the bridge girder member. For this reason, the bridge girder block can be easily assembled.

According to a ninth aspect of the present invention, there is provided a bridge erection method, wherein after the pier is erected, a bridge girder member constituting the bridge girder block is transported to the pier, and then the bridge girder member is lifted by a lifting facility. By lifting and moving the lifting equipment along the supporting beam structure, the bridge girder member is transported to the end of the existing bridge girder, and the bridge girder member is sequentially added to the end of the existing bridge girder as a single material. .

In this method of erection of a bridge, a bridge girder member is carried to a pier by a crane, a lifting facility, or the like, and the bridge girder member is added to the end of the bridge girder as a single material. In addition, a support beam structure and a lifting facility are used as means for transporting the bridge girder members. For this reason, since the bridge girder member can be transported by a simple operation as compared with the case where a conventional travel crane is used, the erection work can be easily performed, and the efficiency of the erection work can be improved.

According to a tenth aspect of the present invention, there is provided a bridge erection apparatus for moving a bridge girder member constituting a bridge girder onto a pier, moving along a standing pier and an existing bridge girder, and projecting an upper part. Erection mechanism of beam structure,
Lifting equipment that moves on the erection mechanism and lifts the bridge girder member as a single material.

In this erection apparatus, first, the bridge girder member is carried up to the pier by a crane, and then the bridge girder member is lifted as a single piece by the lifting equipment. When the position of the lifting equipment and the bridge girder member do not match, the positioning is performed by moving the erection mechanism or the lifting member, or by moving the bridge girder member using, for example, a bogie. Next, the bridge girder member is transported by the lifting equipment and added to the end of the existing bridge girder. Also,
In this erection apparatus, the erection mechanism has a beam structure, and the bridge girder member is transported by the erection mechanism and the lifting equipment. For this reason, the erection device can be simplified and reduced in weight as compared with the case where a conventional travel crane is used.

The lifting of the bridge girder member on the pier is not limited to the standing crane. For example, it may be lifted by a lifting facility (claim 11).

According to a twelfth aspect of the present invention, there is provided the bridge erection apparatus according to the above-mentioned bridge erection apparatus, further comprising: a bogie on which the suspended bridge girder member is placed and which moves on the pier and the existing bridge girder; A work scaffold that is located around and moves together with the erection mechanism.

In this erection apparatus, first, a bridge girder member is carried up to a pier by a crane or the like, and is mounted on a bogie. Subsequently, the bogie is moved to below the lifting equipment, and the bridge girder member is lifted by the lifting equipment as a single material. By using the cart, lifting by the lifting equipment can be performed without moving the erection mechanism. It should be noted that both the truck and the lifting equipment may be moved to position the carriage and the lifting equipment, and may be lifted.

Next, the bridge girder member is transported by the lifting equipment and added to the end of the existing bridge girder. At this time, the work can be easily performed by using the work scaffold. After this addition, the erection mechanism is moved to the end of the existing bridge girder, and the above steps are repeated. Further, in this erection device, the erection mechanism has a beam structure, and the bridge girder member is transported by the erection mechanism and the lifting equipment. Therefore, similarly to the above, the erection device can be simplified and reduced in weight.

According to a thirteenth aspect of the present invention, there is provided a method of erection of a bridge, wherein after the pier is erected, an erection mechanism comprising a plurality of main girders having a divided structure is first installed integrally on the pier. A step of lifting the member onto the bridge girder, a step of lifting the lifted bridge girder member by a lifting facility, a step of transporting the bridge girder member to an existing bridge girder end by moving the lifting facility along a erection mechanism, After a step of sequentially adding a bridge girder member to the end of the existing bridge girder as a single material, then dividing the erection mechanism and adding a new main girder as needed, the two erection mechanisms on the bridge spar Is formed, and the above steps are repeated using each of the erection mechanisms.

In the state where the pier is erected, it is not possible to secure a sufficient space on the pier.
An erecting mechanism is formed by an appropriate number of main girders. Then, the bridge girder members carried by a crane or the like are conveyed by the lifting equipment, and sequentially added to the end of the bridge girder as a single material. Next, since the space can be secured by adding the bridge girder, the construction mechanism is divided and the construction work is performed on both sides of the bridge girder.
In this way, the erection work can be performed easily and efficiently as compared with the case where a conventional travel crane is used.

A bridge erection apparatus according to a fourteenth aspect of the present invention is a divided structure comprising a crane for lifting a bridge girder member constituting a bridge girder onto a pier and a plurality of main girder, and the erected pier and / or existing pier is constructed. And a lifting device that moves on the erection mechanism and lifts the bridge girder member as a single material.

In this bridge erection apparatus, first, a bridge girder member is carried over a bridge girder by a crane. Next, the bridge girder member is lifted by the lifting equipment and moved along the erection mechanism. When this bridge girder member is transported to the end of the bridge girder, the bridge girder is erected by successively adding a single material. Next, since a work space can be secured by erection of the bridge girder, the erection mechanism is divided, a main girder is added as necessary, and each erection mechanism is moved to both ends of the bridge girder. Then, the erection work is performed using the erection mechanisms in the same manner as described above. According to this bridge erection device, the erection device can be simplified and reduced in weight as compared with the case where a conventional travel crane is used.

The lifting of the bridge girder member on the pier is not limited to the standing crane. For example, it may be lifted by a lifting facility (claim 15).

The bridge erection apparatus according to claim 16 is the bridge erection apparatus according to the above, further comprising a bogie on which the bridge girder member is mounted and which moves on the pier and the existing bridge girder, and a bridge girder to be added. A work scaffold that is located and moves together with the erection mechanism.

In this erection apparatus, first, a bridge girder member is carried up to a pier by a crane or the like, and is mounted on a bogie. Subsequently, the bogie is moved to below the lifting equipment, and the bridge girder member is lifted by the lifting equipment as a single material. Next,
The bridge girder members are transported by the lifting equipment and added to the end of the existing bridge girder. At this time, the work can be easily performed by using the work scaffold. After this addition, the erection mechanism is divided and necessary main girders are added, and each erection mechanism is moved to the end of the existing bridge girder, and the above steps are repeated.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a bridge erection method and apparatus according to the present invention will be described below in detail with reference to the drawings. The present invention is not limited by the embodiment.

(Embodiment 1) FIGS. 1 and 2 show a bridge erection apparatus according to Embodiment 1 of the present invention.
(A) is a front view, (b) is a top view, and (c) is a side view. The bridge erection apparatus 100 includes a crane 3, an erection mechanism 11, and an assembling apparatus 20. In the bridge erection apparatus 100, first, the pier 1 and the crane 3
Then, the single material 9b on the ground is carried up to the work space 10a by the crane 3. Next, the bridge beam 9
is assembled, and the bridge girder block 9a is transported to the end of the existing bridge girder 9 by the erection mechanism 11. Then, the bridge girder block 9 a is positioned by an operator on the work platform 31 and added to the end of the bridge girder 9. This work is sequentially performed to complete the bridge erection work. Below, the bridge erection device 100
The erection method will be described in detail.

(Bridge erection device) The crane 3 shown in FIGS. 1 and 2 is substantially the same as that of the above-mentioned conventional example.
The difference is that a hanger 3b for holding and lifting the single material 9b is provided at the lower end of the wire 3a. On the bridge girder 9, a work space 10a for assembling the single member 9b is provided. An assembling device 20 is temporarily installed on the work space 10a. This work space 10a is the crane 3
It will be located within the working range of the above and will be used as a floor slab after the pier is erected. Further, on the ground, a transport cart and a transport path for transporting a single material, which are shown in the above-described conventional example, are installed (not shown).

FIG. 3 shows the erection mechanism shown in FIGS. 1 and 2, (a) is a front view, and (b) is a top view. The erection mechanism 11 includes a mechanism main body 11a, a trolley 12, and a moving device 14. A moving rail 15 is laid on the upper surface of the existing bridge girder 9. The mechanism main body 11a is installed on the moving rail 15 via a slide table 17, and has a beam structure having a protruding portion 11d that is longer on the upper side 11c side than on the lower side 11b side. The carriage 12 has a flat plate structure having the same width as the mechanism main body 11a. The carriage 12 is installed on a traveling rail 19 laid on the upper surface of the mechanism main body 11, and is movable on an overhang portion 11 d of the mechanism main body 11. Also,
On the lower surface of the carriage 12, four lifting facilities 13 are provided. Each lifting equipment 13 is provided with a hook 13a for suspending the bridge girder block 9a at the lower end of the wire while being located inside the traveling rail 19.

FIG. 4 is an enlarged view of the moving device shown in FIG. The moving device 14 uses a tower jack 14a composed of a hydraulic cylinder as a driving source. Tower jack 1
The base end of 4a is pivotally supported by the lower part 11b of the mechanism main body 11a, and the other end of the piston side is provided with a clamp 14b for holding the moving rail 15. The mechanism body 11
A clamp 14c similar to that described above is directly connected to the lower portion 11b of a. Since the clamps 14b and 14c alternately fix or release in accordance with the expansion and contraction operation of the tower jack 14a, the mechanism main body 11a can be moved in conjunction with the operation of the tower jack 14a. In addition,
The moving device 14 includes, in addition to the tower jack 14a,
A drive wheel method, a winch method, or the like can also be used.

The erection mechanism 11 includes the erection mechanism 1.
A reaction force receiver 16 is provided to prevent 1 from rising from the moving rail 15. FIG. 5 is a configuration diagram showing the reaction force receiver. The reaction force receiver 16 includes an upper connecting portion 16b connected to the erection mechanism 11 by bolts 16d, and a moving rail 11
The lower connecting portion 16a attached to the fifth side is connected to the lower connecting portion 16a by a pin 16c, and is tightened by a bolt 16d.
The upper connecting portions 16b are provided at both ends of the lower portion 11b of the mechanism main body 11a. On the other hand, the lower connecting portion 16a is
5, and the structure may be a belt-like structure in which a plurality of long holes through which the pins 16c pass are provided.
A plurality of rectangular plates may be provided only on necessary portions on the bridge girder 9. When the bridge girder block 9 a is attached to the existing bridge girder 9, the reaction force receiver 16 provides the
1 to support the reaction force based on the overturning moment, and prevent the erection mechanism 11 from lifting up.

The moving guide 18 is provided on the mechanism main body 11a.
Is provided. FIG. 6 is an explanatory diagram showing a movement guide. The movement guide 18 is provided at a lower portion 11b of the mechanism main body 11a.
Two guides are provided on both sides, and guide the mechanism body 11a while keeping a small gap with respect to the moving rail 15. Note that the moving guide 18 may be a block shape having a key-like tip instead of the rail shape.

7 and 8 show the assembling apparatus shown in FIG. 2, wherein (a) is a front view, (b) is a top view, and (c) is a side view. The assembling apparatus 20 has a plurality of support members 20a that pivot about the base 20d as a fulcrum. This support member 20a is used for the work space 1 on the pier 9.
0a. FIG. 3A shows a state in which the support member 20a stands up and supports the single members 9c and 9d, and FIG. 3B shows a state in which the support member 20a is lying down.

In this assembling apparatus 20, first, as shown in FIG.
The single members 9b, 9c, 9d, and 9e are carried on the top, and the single member 9b serving as the bottom is placed on the receiving table 20c. Subsequently, the single members 9c and 9d serving as side surfaces are placed on the support portions 20d protruding from the support member 20a, and the support members 20a are erected with the single members 9c and 9d locked. Next, the single material 9e to be the upper portion is placed on the upright single materials 9c and 9d.
b-9e are welded and the locking by the support member 20a is released. Thus, the bridge girder block 9a is completed.

(Method of Building Bridge) FIG. 9 is an explanatory diagram showing a method of building a bridge. First, as shown in FIG. 1A, the crane 3 is erected, and the pier 1 is constructed using the crane 3. Alternatively, a pier 1 constructed in another way
The crane 3 is erected near. Subsequently, the bridge girder 9 and the work space 10 a are laid on the pier 1 using the crane 3, and the moving rail 15 is laid on the bridge girder 9. Next, the beam member, the trolley 12 and the like are carried up to the work space 10a using the crane 3, and the erection mechanism 11 is assembled. Further, the supporting device and the like are carried up to assemble the assembling apparatus on the work space 10a.

Next, the single materials 9b to 9e are
Are sequentially carried up, and the bridge girder block 9a is assembled using the assembling apparatus. The assembled bridge girder block 9a is lifted by the lifting equipment of the erection mechanism 11. Here, the bridge girder block 9a is attached to the mechanism body 1 so that no overturning moment is generated.
1 to be lifted at the center. Then, as shown in FIG.
Move 1 to the right end of the bridge girder. When the position of the erection mechanism 11 is determined, an appropriate part of the erection mechanism 11 (opposite to the erection side) and the existing bridge girder 9 are connected to support a reaction force. This connection is performed by a connection mechanism 1 including a connection fitting and a wire.
1e.

After fixing the erection mechanism 11 to the right end of the bridge girder 9,
This time, the carriage 12 on the overhang portion 11d is driven to the right,
The bridge girder block 9a is transported to the end of the bridge girder 9 under construction. Subsequently, as shown in FIG. 3C, the lifting equipment 13 is operated to lower the bridge girder block 9a. Bridge girder block 9a
Is positioned by a worker on a scaffold (not shown) provided at the tip of the existing bridge girder 9, and is added to the existing bridge girder 9. In addition, on the bridge girder 9 that has been added, the erection mechanism 1
1, the moving rail 15 is newly provided.

Further, the bridge girder block 9a is extended on the left side of the bridge girder by the same procedure as described above (FIGS. (D) to (f)). In this way, the bridge girder blocks 9a are alternately added to both ends of the bridge girder 9, so that the erection work proceeds while taking into account the left-right balance. On the other hand, this bridge girder 9
The work to extend the bridge girder 9 is proceeding in the same manner as above, and when the adjacent bridge girder 9 coincides, the two bridge girder 9 are joined. Thereafter, the slabs (not shown) are sequentially driven while the moving rails 15 are removed from the center of the block of the bridge girder 9 using the erection mechanism 11. Thereby, the construction of the bridge girder 9 is completed.

According to the bridge erection apparatus 100 and method described above, it is not necessary to temporarily provide a vent unlike the conventional method, so that the bridge erection can be easily performed in a deep valley, a river with a large flow rate, a road with a large traffic volume, or the like. It is possible to construct a long block bridge economically. Single material 9
Since the crane 3 is utilized to the maximum extent for carrying b-9e, and the bridge girder block 9a is assembled on the work space 10a on the pier 9, the erection work can be performed efficiently. Further, the erection mechanism 1
1, the bridge girder block 9a is transported, positioned and attached. Since these operations can be performed in the erection mechanism 11, the operations can be performed without being affected by weather conditions. For this reason, the construction work of the bridge becomes more efficient.

Further, since the erection mechanism 11 has a beam structure and the equipment to be installed in the erection mechanism 11 is a short block and has a single function, the erection mechanism 11 can be simplified and reduced in weight. Further, since a small moving device 14 of the erection mechanism 11 can be used and the moving speed can be increased, the work efficiency is improved and the equipment cost is reduced.
These effects are prominent in the construction work of bridges that require repeated work.

In the first embodiment, the single erection mechanism 11 is alternately moved left and right on the bridge girder 9, but dedicated erection mechanisms may be provided separately for the left and right. By doing so, the efficiency of the erection work can be further improved. Further, if a windshield is attached to the mechanism main body 11a, the work becomes easier.

(Embodiment 2) (Bridge erection apparatus) FIG. 10 shows Embodiment 2 of the present invention.
(A) is a front view,
(B) is a top view. The bridge erection apparatus 200 according to the second embodiment has substantially the same configuration as the bridge erection apparatus 100 according to the first embodiment, except that the lifting equipment 13 is directly attached to the mechanism main body 11a without using a bogie. There is a characteristic in the point. The other configuration is the same as that of the first embodiment, and the description is omitted. A plurality of lifting equipments 13 are attached to the left and right ends of the overhang portion 11d and the vicinity thereof. Since the bogie is omitted, the traveling rail on the overhang portion 11d is unnecessary.

The mechanism main body 11a is provided with a guide roller. FIG. 11 is an explanatory diagram illustrating a guide roller. The guide roller 32 is provided at the lower part 1 of the mechanism main body 11a.
1b comprises two sets of rollers 32a attached to both sides. The roller shape is a truncated cone, and the bridge girder 9
The upper moving rail 15 is sandwiched. Thereby, it is possible to guide the mechanism body 11a and to support the overturning moment (lift). In the first embodiment, the guide roller 32 may be used instead of the moving guide 18.

(Method of Bridge Construction) Next, a method of bridge construction will be described. 12A and 12B are explanatory views showing a method for erection of the bridge, wherein FIG. 12A is a front view, and FIG. 12B is a top view. First, the bridge girder 9 is placed on the pier 1 as in the first embodiment.
And a moving rail 15 is laid on the bridge girder 9.
Further, the work space 10a is installed on the pier 1, and an assembling device (not shown) is temporarily provided on the work space 10a.

Subsequently, the single material (not shown) is carried by the crane 3, and the bridge girder block 9a is assembled on the work space 10a by the assembling apparatus. Next, the erection mechanism 11 is moved to the left along the moving rail 15, and
Is located on the bridge girder block 9a (position A in the figure). At this position A, the bridge girder block 9a is lifted by the lifting equipment 13. Here, a falling moment is generated in the mechanism main body 11 by the weight of the bridge girder block 9a. However, since the mechanism main body 11 is supported by the guide rollers 32, the mechanism main body 11 does not fall.

When the bridge girder block 9a is lifted, the erection device 11 is moved to the right, and the bridge girder block 9a is transported to the right end of the existing bridge girder 9 (position B). Next, lifting equipment 1
3 is operated to lower the bridge girder block 9a. A work scaffold 31 is installed at the end of the existing bridge girder 9, and the worker positions the bridge girder block 9 a on this work scaffold 31,
Add to it.

On the other hand, although not shown, a bridge girder block 9a is added to the left end of the existing bridge girder 9 in the same manner as described above. That is, the bridge girder block 9a is assembled on the work space 10a, and the lifting mechanism 13 provided at the left end of the overhang portion 11d is positioned on the bridge girder block 9a by moving the erection mechanism 11 to the right. Next, the bridge girder block 9a is lifted by the lifting equipment 13, and the erection mechanism 1 is lifted.
Move 1 to the left. Then, the lifting equipment 13 is operated to lower the bridge girder block 9a, and is added to the left end of the existing bridge girder 9. In this way, the bridge girder blocks 9a are alternately added to the left and right ends of the existing bridge girder 9, thereby promoting the construction of the bridge.

As described above, according to the bridge erection apparatus 200 and the method, the lifting equipment 13 is fixedly installed on each of the left and right ends of the mechanism body 11a, and the bridge girder block 9a is suspended by the left or right lifting equipment 13. Then, the erection mechanism 11 is moved to transport the bridge girder block 9a to the erection position. For this reason, the bogie and the running rail as in the first embodiment are not required, so that the erection mechanism 11 can be simplified and reduced in weight. As a result of reducing the weight of the bridge, an effect is obtained such that the bridge mechanism 9 can be easily moved by suspending the bridge girder block 9a.

In the second embodiment, the single erection mechanism 11 is alternately moved left and right on the bridge girder 9, but dedicated erection mechanisms may be provided separately for the left and right. By doing so, the efficiency of the erection work can be further improved. Further, if a windshield is attached to the mechanism main body 11, work becomes easier.

(Third Embodiment) FIG. 13 is a front view showing a bridge erection apparatus according to a third embodiment of the present invention. The bridge erection apparatus 300 includes a crane 3, two sets of erection mechanisms 21A and 21B, and a transport trolley 33. In the erection apparatus 300, the pier 1 and the crane 3 are erected in advance, and then the single material 9b on the ground is carried up to the transport carriage 33 by the crane 3. Next, the single member 9b is connected to the erection mechanism 21A,
Transport to 1B. Then, the single members 9b are transported to the end of the existing bridge girder 9 by the erection mechanisms 21A and 21B, and the single members 9b are added to the ends of the bridge girder 9 while being positioned by a worker on the work scaffold 21b. Hereinafter, the bridge erection device 300 and the erection method will be described in detail.

(Bridge erection device) The crane 3 is provided with a lifting wire 3a, and a lower end of the wire 3a is provided with a lifting tool 3b for holding and hanging the single material 9b. The transport trolley 33 is installed on the upper surface of the bridge girder 9 already installed on the pier 1, and the single material 9 carried by the crane 3
b is received and transported to predetermined positions of the erection mechanisms 21A and 21B. Further, on the ground, a transport cart and a transport path for transporting a single material, which are shown in the above-described conventional example, are installed (not shown). The single member 9b is assembled in a panel in advance, and basically includes a plurality of panel members including upper and lower flanges, side webs and the like, and a diagonal member.

FIG. 14 is a front view of the erection mechanism shown in FIG. 13, and FIG. 15 is a side view of the erection mechanism shown in FIG. The erection mechanisms 21A and 21B are installed on the right and left sides of the bridge girder 9, respectively.
1B includes a mechanism main body 21a, a moving device 28, and a carriage 22.
It is composed of The mechanism main body 21a has a beam structure, and has an overhang portion 21c that is long on the left and right of the bridge girder on the upper side.
Further, a work platform 21b is provided below the overhang 21c. The work scaffold 21b is the bridge girder 1 to be newly added.
-It is installed around the block, and a wire 21d for preventing falling is stretched outside.

The moving device 28 moves the mechanism body 21a along the upper surface of the existing bridge girder 9, the details of which will be described later. The carriage 22 has a plurality of lifting equipments 23 provided at a lower portion, and the traveling rail 3 laid on the upper surface of the overhang portion 21c.
0. Each lifting equipment 23 has a hook at the lower end of the lifting wire. The lower part 21e of the mechanism body indicated by a two-dot chain line in FIG.
After adding one block of bridge girder, move it and attach it.

FIG. 16 is a block diagram showing the details of the mobile device. In the moving device 28, a hoisting device 29 is movably installed on the upper surface of the existing bridge girder 9, and the hoisting device 29 is connected to the mechanism main body 21a by a rope 28c or the like, and the drum 29a of the hoisting device 29 and the existing A wire 28b is stretched between the bridge girder 9 and a locking member 28a provided at the tip of the bridge girder 9. The moving device 28 rotates the drum 29a and winds up the wire 28b, so that the mechanism main body 21a
Is moved along the upper surface of the bridge girder 9.

Further, the erection mechanisms 21A and 21B have the structure shown in FIG.
As shown in FIG. 7, a moving guide 24 for guiding the moving operation
Also, a reaction force receiver 25 for preventing lifting is provided. FIG. 18 shows a detailed view of a mounting portion of the movement guide. The movement guide 24 works between the lower surface of the mechanism body 21a and the upper surface of the existing bridge girder 9 as shown in FIGS. 9A and 9B, and as shown in FIGS. It is installed between the floor of the scaffold 21b and the lower surface of the existing bridge girder 9. The reaction force receiver 25 prevents the mechanism main body 21a from overturning by supporting an overturning moment (lifting) that acts during single material conveyance or installation work.

FIG. 19 is a detailed configuration diagram of the movement guide and the reaction force receiving provided on the lower surface of the mechanism main body and the upper surface of the existing bridge girder. The moving guide 24 is composed of a number of rotating guide rollers 24a and a vertical guide 24b, as shown in FIGS. This movement guide 24
Thereby, the moving operation of the erection mechanisms 21A and 21B can be smoothly and safely guided. In addition, reaction force receiving 25
The mechanism main body 2 is shown in FIGS.
A plurality of tightening bolts 25b screw-fitted to the lower surface of 1a
And a pressure receiving plate 25a having a predetermined size, which is engaged with the head of the tightening bolt 25b and is attached to the upper surface of the existing bridge girder 9.
And To adjust the reaction force receiver 25, first, the mechanism main body 21a is slightly pushed up by the jack 27 so that the guide roller 24 is floated from the upper surface of the bridge girder 9. Next, the space between the lower surface of the mechanism main body 21a and the upper surface of the bridge girder 9 is fixed by tightening the tightening bolt 25b (the reaction force is supported). Thereby, the acting reaction force can be dispersed and stably supported.

(Method of erection of bridge) Next, a method of erection of this bridge will be described. First, as in the first embodiment, the crane 3 is erected, and the pier 1 is constructed using the crane 3. Alternatively, a pier 1 constructed in another way
The crane 3 is erected near. Subsequently, the bridge girder 9 is installed on the pier 1 using the crane 3 and the crane 3
To lift the beam member and the trolley 22, etc.
Assemble 1A and 21B. The two erection mechanisms 21A and 21B are assembled and installed at the left end and the right end of the bridge girder 9. At first, only one erection mechanism 21A can be installed because the space on the bridge girder 9 is narrow.
Is added to move the erection mechanism 21A to the end of the bridge girder 9, it is possible to assemble another erection mechanism 21B.

Further, a running rail 30 for running the carriage 22 is laid on the upper surface of the overhang portion 21c of the assembled mechanism body 21a, and the carriage 22 is installed on the running rail 30. Subsequently, the transport trolley 33 is carried by the crane 3 and installed on the upper surface of the bridge girder 1. Next, the single materials 9b to 9e are sequentially carried up by the crane 3, placed on the transport trolley 33, and transferred to the erection mechanisms 21A and 21B. The transferred single material 9b is lifted by the lifting equipment 23 and transported to the end of the overhang 21c. Subsequently, the single material 9b is lowered by operating the lifting equipment 23 and positioned on the work scaffold 21b, and is sequentially attached to the end of the existing bridge girder 9.

FIG. 20 is an explanatory view showing a process of sequentially attaching single members and adding one block of the bridge girder. First, as described above, the single members to be the bottom member 9b, the side wall members 9c and 9d, the diagonal member 9f, and the upper member 9e are sequentially conveyed.
Subsequently, the bottom member 9b is attached (FIG. 7A). Next, the side wall members 9c and 9d are attached (FIGS. (B) and (c)), and finally the diagonal member 9f and the upper member 9e are attached (FIG. (D)). Thus, the addition of one block of the bridge girder is completed. When the addition of one block of the bridge girder is completed, the erection mechanism 21A is moved to the tip of the newly installed bridge girder using the moving device 28.

The above procedure is repeated in parallel on the left and right sides of the bridge girder 9 while maintaining the right and left balance. On the other hand, the bridge girder 9 is also located next to the bridge girder 9 in the same manner as described above.
The work to extend the bridge girder is progressing, and the bridge girder 9 is joined when the adjacent bridge girder 9 coincides. Thereafter, floor slabs (not shown) are sequentially laid on the upper surface of the existing bridge girder 9 to complete the construction of the bridge.

As described above, according to the bridge erection apparatus 300 and the method, substantially the same effects as those of the first embodiment can be obtained. In addition, the bridge spar member lifted by the crane 3 can be used as a single member 9b while the bridge spar 9 is being erected. To the existing bridge girder 9, so that the erection mechanisms 21 A and 21 B
Can be simplified and lightened. Further, since the erection equipment is reduced in size, the equipment cost is correspondingly reduced. Further, since the dedicated erection mechanisms 21A and 21B are arranged on the left and right bridge girders 9, work efficiency can be improved. The mechanism body 21
a and the work scaffold 21b are provided with a windshield,
The erection work can be performed more efficiently.

(Embodiment 4) (Bridge erection apparatus) FIG. 21 shows Embodiment 4 of the present invention.
(A) is a front view,
(B) is a side view, and (c) is a top view. The erection device 400 includes a crane 53 and an erection mechanism (wagen) 3.
And 4. The crane 53 is provided with a lifting wire 53a, and a lifting tool (not shown) for lifting the single material 9b at the lower end thereof.
Is provided. The erection mechanism 34 includes a plurality of main girders 36a, 3
6b, 37a, 38a and main girders 36a, 36b, 37
a, a truck 42 running on 38a, and a plurality of lifting facilities 42a provided on the truck 42.

The main girder 36a includes a bottom plate 36c and a side plate 36.
The bottom plate 36c has a plurality of projections 36e protruding from the lower surface of the bottom plate 36c. In addition, a reaction force receiver 43 that supports the overturning moment is provided behind the main girder 36a. The reaction force receiver 43 is a bar-shaped uplift stopper 4 that is passed over the side plate 36d of the main girder 36a.
In this structure, 3a is connected to an existing bridge girder 9 via a wire 43b. Further, below the main girders 36a, 37a, 38a, a front scaffold 39a is connected via a chain block 44.
And the rear scaffold 39c is suspended and attached. The front scaffold 39a has a truss structure. Furthermore, the main girder 36
A travel rail 45 is laid on the upper end edge of “a”, and the carriage 42 is installed on the travel rail 45.

In the initial stage of erection, since there is not enough space on the bridge girder 9, a set of erection mechanisms 34 as shown in FIG. Also, when the overhanging erection progresses and the space on the bridge girder 9 becomes sufficiently large, FIG.
As shown in FIG. 2, two sets of erection mechanisms 3 are divided by main girders 36a and 36b and new main girders 37b and 38b are added.
4A and 34B ((a) is a front view,
(B) is a side view, and (c) is a top view). Construction mechanism 3
A front scaffold 39b and a rear scaffold 39d are suspended below the main beams 36b, 37b, 38b of the 4B via a chain block 44. In addition, each erection mechanism 3
4A and 34B are movable on the existing bridge girder 9.

(Method of Bridge Construction) Next, a method of bridge construction will be described. First, as shown in FIG. 23, the main girder 36a, the main girder 36b, the main girder 37a, and the main girder 38a of the erection mechanism 34A are installed by the crane 53 installed near the pier, and the main girder 37a and the main girder 38a are forwardly mounted. 15 scaffolds 39a
Attachment is made by using a suspension chain block 44 of tf and a suspension chain block 44 of 20 tf ((a) is a front view, and (b) is a side view).

Next, as shown in FIG.
3, the bottom member 9b, which is a single material, is carried up to
a, 37a, and lifted by the lifting equipment 42a. Subsequently, the carriage 42 is moved along the main girder,
The bottom member 9b is lowered onto the front scaffold 39a at the end of the bridge girder 9 ((a) is a front view, and (b) is a side view). Then, the bottom member 9b is positioned in the erection mechanism 34A and welded to the end of the existing bridge girder 9.

Subsequently, as shown in FIG. 25, in the same manner as described above, the side wall member 9c (FIG. 9A), the diagonal member 9d (FIG. 9B) and the upper member 9e (FIG. 9C). Transport,
These are sequentially welded to the end of the bridge girder 9. This completes the construction of one block of the bridge girder. As described above, the lower member 9b, the side wall member 9c, the diagonal member 9d, and the upper member 9e are conveyed, assembled into a box girder in the erection mechanism 34A, and joined to the existing bridge girder 9. Good (not shown). In addition, these members 9a to 9e
Can be joined or assembled while controlling the posture by adjusting the wire length of the lifting equipment 42a.

When the addition of one block of the bridge girder is completed,
As shown in FIG. 26, the erection mechanism 3 corresponds to one block of the bridge girder.
4A is advanced ((a) is a front view,
(B) shows a side view). Further, as shown in FIG. 27, the main girders 37b and 38b are carried up by using a crane 53, and assembled to extend the erection mechanism 34A (in FIG. 27, (a) is a front view, (b) is a side view, Figure (c) shows a top view).

Subsequently, as shown in FIG. 28, when the space on the bridge girder 9 is sufficiently widened by adding two blocks of the bridge girder 9, the erection mechanism 34A is moved to the main girder 36a,
The main girder 37a, the main girder 38a (the erection mechanism 34A), and the main girder 3
6b, a main girder 37b, and a main girder 38b (an erecting mechanism 34B), and are installed on both left and right sides of the bridge girder 9 ((a) is a front view, (b) is a side view, (c) ) Shows a top view). Thereafter, the erection work proceeds on both sides of the bridge girder in the same procedure as described above.

As described above, according to the bridge erection apparatus 400 and the method, when the members are assembled using the plurality of main girders 36a and the space on the bridge girder 9 can be secured, the main girders 36 to
Since the bridge 38 is divided and moved and installed on both sides of the bridge girder to proceed with the erection work, the erection mechanism 34 can be simplified and reduced in weight. Further, since the erection equipment is reduced in size, the equipment cost is correspondingly reduced. Further, since the exclusive erection mechanisms 34A and 34B are arranged on the left and right bridge girders, the work efficiency can be improved. If the work scaffold is provided with a windshield, the erection work can be performed more efficiently.

[0082]

As described above, according to the bridge erection method according to the present invention (claim 1), after the pier is erected, the bridge girder member constituting the pier block is transported to the pier, After assembling the bridge girder block on this pier, the bridge is erected by adding the bridge girder block to the end of the existing bridge girder. Therefore, the efficiency of the erection work is improved.

Further, according to the bridge erection method according to the present invention (claim 2), the bridge girder block assembled on the pier is lifted by the lifting equipment, and along with the support girder structure of the lifting equipment, along the bridge girder. By moving the bridge girder block, the bridge girder block is transported to the end of the existing bridge girder, and the bridge girder block is added to the end of the existing bridge girder. Because of this, the bridge can be easily installed regardless of the weather,
Efficiency of erection work improves.

Further, according to the bridge erection method according to the present invention (claim 3), a work space of a predetermined size is temporarily provided on the pier, and an assembling device for the bridge girder member is provided on the work space, and the assembling is performed. A bridge girder block was assembled on the work space using the device. For this reason,
Since the bridge girder block can be easily assembled, the efficiency of the erection work is improved.

Further, according to the bridge erection apparatus according to the present invention (claim 4), a crane for lifting a bridge girder member constituting a bridge girder to a pier, and a lifting facility for lifting a bridge girder block assembled on the pier. And a erection mechanism having a beam structure that moves along an upright pier and an existing bridge girder. For this reason, since a bridge can be erected without using a temporary vent or an oblique vent, the structure can be simplified and the weight can be reduced. The lifting of the bridge girder member on the pier is not limited to the standing crane.

Further, according to the bridge erection apparatus according to the present invention (claim 6), the upper part of the beam structure of the erection mechanism extends leftward and / or rightward, and the lifting equipment is moved along the upper part of the beam structure. As a result, the bridge girder blocks can be easily added.

Further, according to the bridge erection apparatus of the present invention (claim 7), the upper part of the beam structure of the erection mechanism is extended to the left and / or the right side, and the lifting equipment is fixed to both ends of the upper part of the beam structure. As a result, the bridge girder blocks can be easily added.

Further, according to the bridge erection apparatus according to the present invention (claim 8), a work space having a predetermined area is provided on the pier, and the bridge girder member constituting the bridge girder is assembled on the work space. Since the device is provided, the bridge girder block can be easily assembled.

Further, according to the bridge erection method according to the present invention (claim 9), the bridge girder member transported to the pier is lifted by the lifting equipment, and the lifting equipment is moved along the support beam structure. Therefore, the bridge girder members were transported to the end of the existing bridge girder, and were added sequentially as a single material. For this reason, since the erection work can be easily performed, the efficiency of the erection work can be improved.

According to the bridge erection apparatus according to the present invention (claim 10), the erection mechanism has a beam structure, and the erection mechanism and the lifting equipment transport the bridge girder member. The erection device can be simplified and reduced in weight as compared with the case where such a travel crane is used. In addition, the lifting of the bridge girder member on the pier is not limited to an upright crane.

In the bridge erection apparatus according to the present invention (claim 12), the erection mechanism has a beam structure, and the bridge girder member is transported by the erection mechanism and the lifting equipment. The device can be simplified and reduced in weight. In addition, the use of the cart and the use of the work scaffold facilitates the erection work.

Further, according to the bridge erection method according to the present invention (claim 13), the bridge spar member is added by the erection mechanism composed of a plurality of main girders, and the erection mechanism is divided when a certain working space can be secured. At the same time, the necessary main girder is added to proceed with the erection on the bridge girder side, so that the erection work can be performed easily and efficiently.

Further, according to the bridge erection apparatus according to the present invention (claim 14), there is provided a crane for lifting a bridge girder member constituting a bridge girder onto a pier, and a divided structure comprising a plurality of main girder, Erection mechanism that moves along the pier and / or existing bridge girder, and lifting equipment that moves on the erecting mechanism and lifts the bridge girder member as a single material. The weight can be reduced. The lifting of the bridge girder member on the pier is not limited to the standing crane.

Further, according to the bridge erection apparatus according to the present invention (claim 16), a trolley on which a bridge girder member is placed and which moves on a pier and an existing bridge girder is installed around the bridge girder to be added. With the work scaffold that moves together with the mechanism, the erection work can be easily performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a bridge erection apparatus according to a first embodiment of the present invention;

FIG. 2 is an explanatory diagram illustrating a bridge erection apparatus according to the first embodiment of the present invention;

FIG. 3 is an explanatory view showing the erection mechanism shown in FIGS. 1 and 2;

FIG. 4 is an enlarged view showing the moving device shown in FIG. 3;

FIG. 5 is a configuration diagram showing a reaction force receiver shown in FIG. 3;

FIG. 6 is an explanatory diagram showing a movement guide.

FIG. 7 is an explanatory view showing the assembling apparatus shown in FIG. 2;

FIG. 8 is an explanatory view showing the assembling apparatus shown in FIG. 2;

FIG. 9 is an explanatory diagram showing a method for erection of the bridge according to the first embodiment;

FIG. 10 is an explanatory diagram of a bridge erection apparatus according to a second embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a guide roller.

FIG. 12 is an explanatory diagram illustrating a method for erection of a bridge according to the second embodiment.

FIG. 13 is a front view showing a bridge erection apparatus according to a third embodiment of the present invention.

FIG. 14 is a front view showing the erection mechanism shown in FIG.

FIG. 15 is a side view showing the erection mechanism shown in FIG.

16 is a detailed configuration diagram showing the moving device shown in FIG.

FIG. 17 is an explanatory diagram showing positions of a movement guide and a reaction force receiver.

FIG. 18 is a detailed view showing a mounting portion of the movement guide.

FIG. 19 is an explanatory view showing a bridge erection apparatus according to a fourth embodiment of the present invention.

FIG. 20 is an explanatory view showing a step of sequentially attaching single members and adding one block of a bridge girder.

FIG. 21 is an explanatory view showing a bridge erection apparatus according to a fourth embodiment of the present invention.

FIG. 22 is an explanatory diagram showing a bridge erection apparatus according to a fourth embodiment of the present invention.

FIG. 23 is an explanatory diagram showing a method for erection of a bridge according to the fourth embodiment.

FIG. 24 is an explanatory diagram illustrating a method for erection of a bridge according to the fourth embodiment.

FIG. 25 is an explanatory diagram showing a method for erection of a bridge according to the fourth embodiment.

FIG. 26 is an explanatory diagram showing a method for erection of a bridge according to the fourth embodiment.

FIG. 27 is an explanatory diagram showing a method for erection of a bridge according to the fourth embodiment.

FIG. 28 is an explanatory diagram showing a method for erection of a bridge according to the fourth embodiment.

FIG. 29 is an explanatory diagram showing an example showing a conventional method of erection of a bridge.

[Explanation of symbols]

 Reference Signs List 100 erection device 1 pier 3 crane 9 bridge girder 9a bridge girder block 9b, 9c, 9d, 9e single material 10a work space 11 erection mechanism 11a mechanism main body 11d overhanging part 12 bogie 13 lifting equipment 14 moving device 14a tower jack 14b, 14c clamp REFERENCE SIGNS LIST 15 moving rail 16 reaction force receiver 17 slide 18 moving guide 19 running rail 20 assembling device 20a support member 31 work platform

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideaki Konishi 4-2-2 Kannon Shinmachi, Nishi-ku, Hiroshima Mitsubishi Heavy Industries, Ltd. Hiroshima Works (72) Koichi Inoue 4-6-1-22 Kanon Shinmachi, Nishi-ku, Hiroshima City Hiroshima Research Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Inventor Shigeo Inoue 6-22, Kannonshinmachi, Nishi-ku, Hiroshima City F-term in Hiroshima Research Laboratory, Mitsubishi Heavy Industries, Ltd. 2D059 AA05 CC03 CC06 CC03 DD03 GG55

Claims (16)

[Claims] After the pier is erected, the bridge girder members constituting the pier block are transported to the pier, the bridge girder block is assembled on the pier, and the bridge girder block is joined to the end of the existing bridge girder. A bridge erection method characterized by erection of a bridge by adding. 2. A bridge girder block assembled on the pier is lifted by a lifting equipment, and is moved along the bridge girder together with a supporting beam structure of the lifting equipment, so that the bridge girder block is moved to an existing bridge girder end. 2. The method according to claim 1, wherein the bridge is conveyed and a bridge girder block is added to an end of the existing bridge girder.
The method of erection of the bridge described in. 3. A work space of a predetermined size is temporarily provided on the pier, and an assembling device for a bridge girder member is provided on the work space, and a bridge girder block is assembled on the work space using the assembling device. The method according to claim 1 or 2, wherein the bridge is erected. 4. A crane for lifting a bridge girder member constituting a bridge girder onto a pier, and a lifting device for lifting a bridge girder block assembled on the pier, and moving along the erected pier and the existing bridge girder. An erection device for a bridge, comprising: an erection mechanism having a beam structure; 5. A bridge comprising a lifting device for lifting a bridge girder block assembled on a pier, and an erection mechanism having a beam structure moving along an erected pier and an existing bridge girder. Construction equipment. 6. The erection mechanism, wherein an upper part of the beam structure projects leftward and / or rightward, and the lifting equipment moves along the upper part of the beam structure. The bridge erection apparatus according to 4 or 5. 7. The erection mechanism, wherein an upper portion of the beam structure projects leftward and / or rightward, and the lifting equipment is fixed to an upper end of the beam structure. Item 6. The bridge erection device according to item 4 or 5. 8. A work space having a predetermined area on a pier, and an assembling device provided on the work space for assembling a bridge girder member constituting the bridge girder. The bridge erection device according to any one of the above. 9. After the bridge pier is erected, the bridge girder member constituting the bridge girder block is carried to the pier, and subsequently, the bridge girder member is lifted by the lifting equipment, and the lifting equipment is converted into a support beam structure. A bridge erection method comprising: transporting the bridge girder member to an existing bridge girder end by moving the bridge girder member along the bridge girder member; and sequentially adding the bridge girder member to the existing bridge girder end as a single material. 10. A crane for carrying a bridge girder member constituting a bridge girder onto a pier, an erection mechanism having a beam structure moving along an erected pier and an existing spar, and having a projecting upper part; And a lifting facility for moving and lifting the bridge girder member as a single material. 11. A erection mechanism having a beam structure that moves along an erected pier and an existing bridge girder and has an overhanging upper part, and a bridge girder member that moves on the erection mechanism and is lifted up to a pier as a single material. A bridge erection device, comprising: a lifting equipment for lifting; 12. A trolley on which a suspended bridge girder member is placed and which moves on a pier and an existing bridge girder, and a work scaffold which is located around the bridge girder to be added and moves together with the erection mechanism. The bridge erection device according to claim 10 or 11, wherein 13. After the pier is erected, first, an erecting mechanism composed of a plurality of main girders having a divided structure is integrally installed on the pier, and a step of hoisting the bridge girder member onto the bridge girder is performed. A step of lifting the bridge girder member by the lifting equipment, a step of transporting the bridge girder member to the end of the existing bridge girder by moving the lifting equipment along the erection mechanism, and a step of attaching the bridge girder member to the end of the existing bridge girder as a single material After passing through the step of successively adding as it is, then, two erection mechanisms are formed on the bridge girder by dividing the erection mechanism and adding a new main girder as necessary, and using the erection mechanisms A method of erection of a bridge characterized by repeating a process. 14. A crane for carrying a bridge girder member constituting a bridge girder onto a pier, a erection mechanism having a divided structure including a plurality of main girders, and moving along a standing pier and / or an existing bridge girder, And a lifting device that moves on the erection mechanism and lifts the bridge girder member as a single material. 15. A divided structure including a plurality of main digits,
An erecting bridge comprising: an erecting mechanism that moves along an erecting pier and / or an existing bridge girder; and a lifting facility that moves on the erecting mechanism and lifts the bridge girder member as a single material. apparatus. 16. A trolley on which a bridge girder member is mounted and which moves on a pier and an existing bridge girder, and a work scaffold which is located around the bridge girder to be added and moves together with the erection mechanism. The bridge erection device according to claim 14 or 15, wherein the bridge is erected.