JPS6183769A - Mold frame moving construction method of slab of high bridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a formwork moving type method 1 that can continuously cast slab concrete for elevated bridges and the like.

``Conventional technology'' Construction of viaducts on railways, expressways, etc. involves constructing slabs with almost the same shape continuously on the piers that have been constructed. Using this shoring as a base, the slab formwork is assembled and concrete is poured. and,
After the concrete hardens, the forms and supports are removed, transported to the next construction section, and reassembled as described above for use.

In such conventional construction methods, the formwork and shoring are assembled and dismantled for each work section and construction proceeds sequentially, making the work extremely complicated and requiring a large number of people and effort.
Yoshihiro Kuri's work was poor and it cost a lot of money. In addition, in order to solve these problems, a construction method has been developed in which the ν frame or shoring is moved to the next shed while it is assembled at J. However, even with this construction method, the shoring Not only is it troublesome to assemble and dismantle, but also a large lane is required to move the formwork, making the construction process laborious and raising construction costs.

"Problems to be Solved by the Present Invention" The present invention solves the drawbacks of the conventional construction method as described above, and uses a movable formwork device that can travel and adjust its height, and a trolley for further moving the formwork device. This aims to provide a formwork construction method that allows construction to be continued without dismantling the assembled formwork equipment, simplifies construction, and is labor-saving, efficient, and economical. It is.

"Means for Solving the Problems" The present invention provides 92 parts of the slab to be constructed between each pier.
On a trolley that can move freely in the VfT direction,
A slab formwork device with freely raised and lowered barbs is mounted so as to be movable along the longitudinal direction of the slab so that slab concrete can be poured. Then, the slab formwork device is pulled out to the outside of the pier, the bogie installed between the next pier is aligned with the previous bogie, a rail is constructed between both platforms, and the slab formwork device is moved to the next bogie. This system is characterized in that it is moved and placed, and the cart is moved between the piers so that slab concrete can be placed.

"Example" Hereinafter, an example of the construction method of the present invention will be described with reference to the drawings.

In the figure, A is a bridge pier constructed in parallel at required intervals, and the upper ends of each are almost flush. Between each pier B...
On the ground C of B,..., a pair of rails 1°1 are installed between the piers B, , B,... along the transverse direction of the slab to be constructed.
...is laid out over the outside of... Then, on this rail 1.1, bogies El, 'F4..., which are large enough to fit between the piers B, B2..., are placed via wheels 2.2-... Pier B along rail 1.1, respectively.
, B, . . . can travel to a position where it is completely pulled out to the outside. Each trolley E...
A pair of rail members 3.3 are provided on the top surface of the rail member 3.3 extending in the longitudinal direction of the slab to be constructed, and both of the rail members 3.3 are cut out to be shorter than the width of the trolley, and a stepped portion 4.4 is mounted on the trolley. It is formed. Moreover, each trolley E1... has its rail member 3
, 3 are arranged so that their upper surfaces are horizontally flush with each other.

Therefore, as shown in the diagram, when performing construction in a place where the ground C has undulations or slopes and the height from the ground C to the slab to be constructed is not constant, it is necessary to install the bogie E installed between each pier Bt... , . . . are formed to have different heights.

Reference numeral 5 denotes a slab formwork unit which is commonly placed on each bogie E1, and has a leg rod 7 provided with wheels 6 at the lower end that are guided by the rail member 3 of the bogie head... A pedestal 1 equipped with running legs 9°9... supported via a lifting adjustment mechanism 8
A slab formwork 11 formed in the shape of the lower surface of the slab to be constructed is placed on the bottom of the tank.

At the beginning of construction, the first bogie blind was in a position where it was completely pulled out from the bridge +1/IA, A, as shown by the chain line A in Figure 4, and the rail member of this bogie E A slab formwork apparatus ff5 is placed on 3 via wheels 6. Next, the cart E1 is moved along the rail 1°1 between the piers A and A, and is fixed at a predetermined position. And the running leg body 9.
Operate the lifting mechanism 8 of 9... to adjust the height of the pedestal 10, set the slab formwork 11 at a predetermined height position, and move the side necessary for pouring the slab concrete D. A partial formwork (not shown) is set and slab concrete D is poured.

Once the poured concrete has hardened, the running leg body 9
, 9 . . . to lower the height of the frame [0], and the slab formwork 11 is further peeled off from the concrete D. The other side formwork will also be removed. Once the peel-off mold of the slab formwork 11 is completed, the trolley E1 is moved and the formwork device 5 is pulled out to the outside of the bridge PIIA,A. Then, the next bogie E installed between the next piers is aligned in parallel with this bogie E as shown in Fig. 4, and both bogies E1. A rail 12.12 (Fig. 2, Fig. 4) is constructed across each of the stepped portions 4.4 of F4, and the side bogie E1. Each rail member 3.3 of F4 is communicated via a crossing rail 12. If the slab formwork device 5 is pushed forward in this state, the slab formwork device 5 will move across the rail 12 from the original bogie E to the next bogie island as shown in Figure 2. , Figure 4-
# in a position like! will be placed.

In this way, after transferring the slab formwork device 5 to the next bogie E, remove the crossing rail 12, move the bogie head to the next pier B, and move it to the next pier B. As in , the slab formwork 11 is set in a predetermined state and slab concrete D2 is poured. By repeating the above process, concrete slab construction between each pier is completed! It will be done next.

"Effects of the Invention" As explained above, the present invention provides the following effects between each bridge pier:
Slab concrete is poured by placing a slab formwork device that can be raised and lowered freely on a trolley that is movable along the longitudinal direction of the slab to be constructed. After the concrete has hardened, move the trolley and install the slab formwork equipment on the bridge IJ &
Pull it out to the outside of II, align the next trolley installed between the legs with the previous one, and build a rail across between the two trolleys.
The slab formwork device is moved and placed on the next trolley, and then the trolley is moved between the relevant piers to allow slab concrete to be poured. Not only can the initially assembled large formwork be moved and used repeatedly without assembling and dismantling each section, but it is also possible to install shoring between each leg to support the slab formwork. The complicated and labor-intensive assembly and dismantling of the slab formwork has been eliminated, and the support and movement of the slab formwork has become extremely easy thanks to the movable scripts placed between each pier. The movement of slab formwork from one trolley to another is extremely smooth and simple, and the construction of slab concrete formwork for viaducts, etc., is significantly simplified, and construction can be carried out labor-savingly, efficiently, and economically. It has an improved effect.

[Brief explanation of the drawing]

The drawings schematically show an embodiment of the construction method of the present invention. Figure 1 is a side view showing the slab formwork device set between the original piers, and Figure 2 is a side view showing the slab formwork device set between the original bridge piers. Fig. 3 is a side view showing the state in which the slab formwork device is set between the next piers, and Fig. 4 is a plan view showing the movement process of the slab formwork device. It is a diagram. A...Bridge Pi Bt, Bt...Between piers C...Ground p, D,,D,...
Slab concrete E, , E2...Truck 1
...Rail 2...Main theory 3...
...Rail member 4...8 Mounting part 5...
... Slab formwork device 9 ... Traveling leg body 1
0... Frame 11... Slab formwork 12... Transition rail Fig. 2 -1-----------g3 Fig. 4

Claims (1)

[Claims] Between each pier, a slab formwork device that can be raised and lowered is placed on a trolley that is movable along the transverse direction of the slab to be constructed, and is movable along the longitudinal direction of the slab. After the concrete has hardened, the slab concrete can be placed, and after the concrete has hardened, the cart is moved and the slab formwork device is pulled out to the outside of the pier, and the cart installed between the next pier is aligned with the previous one. A rail is constructed between both bogies, the slab formwork device is moved and placed on the next bogie, and that bogie is moved between the piers to enable pouring of slab concrete. A mobile formwork construction method for slabs such as elevated bridges.