JP3398616B2 - Girder moving device - Google Patents

Description

BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention is Ru <br/> relates to a equipment for moving the erection girders used during crosslinking construction. 2. Description of the Related Art In bridge construction, when a girder material such as a PC girder is erected between bridge piers, as shown in FIG.
Portal cranes 42 are respectively erected on the piers 40 and 41 to lift and laterally move the bridge, and an erection girder (hereinafter referred to as a girder) 45 is arranged between the piers 40 and 41 to transport the PC girder 44. Is done. As shown in FIG. 5, a portal crane 42 erected on the piers 40 and 41 holds a lifting device 46 for lifting a PC girder 44 and a chain block 46 having lifted the PC girder 44 in the left-right direction. It is composed of a traversing carriage 47 for moving and supporting columns 48 for supporting them. The support 48 is a bridge pier 4 arranged adjacent to the pier 4.
It is kept upright by a plurality of stay cables 49 connected to 0, 41 and the like. Girder 45 erected on piers 40 and 41
PC girder 4 transported by cart 50 traveling on top
4 is lifted by the lifting device 46 of the portal crane 42, and is moved laterally by the traversing carriage 47.
It is lowered to a predetermined position on 41 and erected. By repeating such a process, a plurality of P
The C girder 44 can be erected. And pier 4
When the last PC girder member 44e to be erected on 0, 41 is conveyed onto the girder 45, the state shown in FIG. Next, as shown in FIG. 6B, the PC girder 44e on the girder 45 is connected to the PC girder 44 which has already been installed.
Place temporarily on top. Then, as shown in FIG. 6 (c), the girder 45 is lifted, and the already installed PC girder 44 is erected.
It is placed on a roller 51 arranged above. After this, FIG.
As shown in (d), the last PC girder 45e is erected on the trace of the girder 45. [0006] By taking such a step, the state shown in FIG.
5 is advanced in the direction of the pier 52. At this time, the girder 45 is placed on the rollers 51, and the rollers 53 are also arranged on the piers 41 and 52, so that the girder 45 can be smoothly advanced. When the girder 45 is moved to a position between the piers 41 and 52 as shown in FIG. 7B, the girder 45 is lowered and erected between the piers 41 and 52, as shown in FIG. 7C. Then, the PC girder 54 to be next erected can be transported along the PC girder 44 and the girder 45. [0008] By the above-described steps, PC girders can be sequentially erected between the piers erected at the planned bridge site. [0009] In the conventional erection method,
As shown in FIG. 6, the last PC girder 4 is placed on the piers 40 and 41.
4e, the PC girder 44e is replaced with the existing PC girder 44.
Since it is necessary to take a step of temporarily placing the girder 45 on the roller 51 placed on the other PC girder material 44 and placing the girder 45 on the trace of the girder 45, It takes a lot of trouble and time. When the girder 45 is advanced, P
Since the robot moves while being placed on the C girder 44, the piers 41, 5
It is necessary to arrange the roller 53 at the high position of
When reaching between 1, 52, remove the roller 53,
Since the girder 45 has to be lowered to a predetermined position, a great deal of labor and time are spent on these operations. Further, since the heavy girder 45 needs to be moved up and down or moved sideways, there is a high danger at the time of work. As described above, in the conventional girder erection work, the girder moving operation is complicated and requires a great deal of labor and time, which is one of the causes of delaying the construction period of the entire erection work. [0012] Therefore, an object of the present invention is to provide a girder erection technology capable of performing girder erection work efficiently and safely. [0013] In order to solve the above-mentioned problems, a girder moving device of the present invention is a device for moving a girder used in a bridge construction work on a pier, and is mounted on the pier. A support member is provided on the girder material and is movable along the girder material, and girder lifting means provided on the support member is provided. With this configuration, the girder can be lifted by the girder lifting means of the supporting member disposed on the erected girder, and moved along the girder together with the supporting member. As a result, the work of moving the girder between the next piers can be efficiently performed, and the entire girder erection work can be efficiently performed. In addition, since it is not necessary to lift the girder high and place the girder on the already installed girder material, the safety during the operation is improved. In addition, it is desirable that the support member is disposed so as to bridge the plurality of girders that have already been bridged. As the girder lifting means, a jack attached to the support member and a connecting member for connecting the operating part of the jack and the girder are provided, so that the girder attaching / detaching operation and the girder elevating operation can be performed smoothly. Can be. In addition, by providing posture maintaining means for maintaining the posture of the girder suspended by the girder lifting means, it is possible to prevent the girder from shifting or being out of balance during movement. Safety is improved, and it can be installed at an accurate position. As the posture holding means, a guide member provided on the support member and a locking member which is restrained by the guide member and can be raised and lowered and locked to the girder are provided, so that the lifting operation of the girder is not hindered. , The stability of the posture can be ensured. Next, a girder erection method of the present invention is a girder erection method using the above-mentioned girder moving device, wherein a girder is erected between the piers, and a girder material is moved on the girder to make the pier. Transporting the girder between the bridges, lowering the transported girder from the girder and erection between the piers, and after transporting the last girder to be erected between the piers, the girder already erected between the piers Temporarily mounting the girder on the girder, and arranging the girder moving device on the girder material bridged between the piers, lifting the girder with the girder moving device and moving the girder to the next bridge pier. And a step of erection of the last girder between the piers after moving the girder. By adopting such an erection method, it is not necessary to lift the girder high and place it on the already-installed girder material, and it is possible to move the girder while keeping it at a relatively low position. Therefore, the girder erection work can be performed efficiently and safely. Embodiments of the present invention will be described below with reference to the drawings. 1 is a rear view showing a use state of the girder moving device according to the embodiment, FIG. 2 is a plan view showing a use state of the girder moving device, and FIG. 3 is a process explanatory diagram showing a method of using the girder moving device. In this embodiment, a portal crane 42 and a girder 45 as shown in FIGS.
According to the conventional method, a PC girder 12 is erected between the piers 10 and 11 until the stage shown in FIG. Last PC to be installed between piers 10 and 11
When the girder 12e is conveyed along the upper surface of the girder 45, as shown in FIG. 1, the PC girder 12e is detached from the girder 45, temporarily placed on the already installed PC girder 12, and placed on both sides of the girder 45. A girder moving device 13 is placed over a certain PC girder 12. The girder moving device 13 is a support member 1 movable along a rail 14 laid on the upper surface of the girder 12.
5, a jack 16 provided on the support member 15, a connecting member 17 for connecting the jack 16 and the girder 45, a guide member 18 provided on the support member 15, and being restrained by the guide member 18 to move up and down and locked to the girder 45 Possible locking member 1
9 and the like. After the girder moving device 13 is arranged on the PC girder 12, the lower end portions of the connecting member 17 and the locking member 19 are locked to the girder 45, and the jack 16 is operated, as shown in FIG. Thus, the rear end portion of the girder 45 can be lifted. At this time, the roller 20 is attached to the piers 11 and 21.
Is provided, and the first half of the girder 45 is placed on the roller 20 provided on the pier 11.
5 is pulled by a winch (not shown) on the left side of the figure.
As shown in FIG. 3B, the support member 13 can be moved along the beam 12 as it is. As shown in FIG. 3 (c), when the girder 45 reaches between the piers 11 and 21, the girder 45 is lowered and mounted on the roller 20, and the girder moving device 13 is removed. And the lifting device 46 of the portal crane 42
The girder 45 is erected between the piers 11 and 21 when the girder 45 is lifted by using, for example, (see FIG. 4) and the roller 20 is removed, and then lowered again. Thereafter, the piers 11 and 12 are operated in the same procedure as the erection work between the piers 10 and 11.
The transfer and installation work of the PC girder 22 in one space can be started. In the present embodiment, there is no need to lift the girder 45 high and place it on the already installed girder member, and the girder 45 can be moved while being slightly lifted. The transfer between them can be performed efficiently and safely. Further, since the jack 16 and the connecting member 17 are used as the lifting means for the girder 45, the work of attaching and detaching the girder 45 and the work of lifting and lowering the girder can be performed smoothly. The girder 45 is provided with a guide member 18 provided on the support member 15 and a locking member 19 which is restrained by the guide member 18 and which can be raised and lowered and locked to the girder 45. Therefore, the posture of the girder 45 can be stabilized without hindering the lifting and lowering work of the girder 45. According to the present invention, the following effects can be obtained. (1) A support member which is disposed on a girder member erected on a pier and is movable along the girder member, and a girder lifting means provided on the support member are provided so as to be erected. Girder is lifted by the girder lifting means of the support member arranged on the girder material, and it is possible to move the girder along the girder material as it is with the support member, so that the girder erection work is performed efficiently Will be able to do it. There is no need to lift the girder high and place it on the existing girder material, thus improving safety during work. (2) Since the girder lifting means includes a jack attached to the support member and a connecting member for connecting the operating portion of the jack and the girder, the girder attaching / detaching operation and the girder elevating operation can be smoothly performed. The girder can be moved more efficiently. (3) Providing posture holding means for holding the posture of the girder suspended by the girder lifting means makes it possible to prevent the girder from shifting or being out of balance during movement. The safety can be improved and the vehicle can be installed at an accurate position. (4) As a posture holding means, a guide member provided on the support member and a locking member which is restrained by the guide member and which can move up and down to lock the girder are provided.
A stable posture can be ensured without hindering the girder lifting operation. (5) The last girder material erected between the piers is transported, and this girder material is temporarily placed on the girder material already erected between the piers, and then placed on the girder material erected between the piers. The girder moving device of the present invention is arranged, the girder is lifted by the girder moving device and moved to the next pier, then erected between the piers, and the last girder material is erected between the piers after the girder is moved. This eliminates the need to lift the girder high and place it on the existing girder material when moving the girder between piers, so that the girder can be moved efficiently. The entire construction work can be performed efficiently and safely.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view showing a use state of a girder moving device according to an embodiment of the present invention. FIG. 2 is a plan view showing a use state of the girder moving device. FIG. 3 is a process explanatory view showing a method of using the girder moving device. FIG. 4 is a perspective view showing a conventional girder erection method. FIG. 5 is a rear view showing a conventional girder erection method. FIG. 6 is a process explanatory view showing a conventional girder erection method. FIG. 7 is a process explanatory view showing a conventional girder erection method. [Description of Signs] 10, 11, 21 Bridge piers 12, 12e, 22 PC girder 13 Girder moving device 14 Rail 15 Support member 16 Jack 17 Connecting member 18 Guide member 19 Locking member 20 Roller 45 Girder

Claims (1)

(57) [Claim 1] An apparatus for moving a girder used in a bridge construction work on a pier, which is arranged on a girder material erected on the pier and along the girder material. Movable support member, girder lifting means provided on the support member ,
The posture of the girder suspended by the girder lifting means
Posture holding means for holding the girder , the girder lifting means attached to the support member
Jack, operating part of the jack and the girder
And a connection member for connecting the support member to the support member.
And the guide member is moved up and down by being restrained by the guide member.
A lock member that can be locked to the slider.
A girder moving device , which locks on a girder.