JPS61146963A - Mold frame moving type construction method of slab concrete 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 has hardened, the forms and supports are removed and the next construction section is reached, where it is reassembled and used as described above.

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.
It was inefficient and cost a lot of money. In addition, in order to solve these problems, a construction method has been developed in which the formwork or shoring is moved to the next location while it is assembled, but even with this construction method, the assembly of the shoring,
Not only is dismantling troublesome, but the construction is large-scale and construction costs are high, such as requiring a large lane to move the formwork.

"Problems to be Solved by the Present Invention" The present invention solves the drawbacks of the conventional construction method as described above, and provides a movable formwork device that can be moved freely, and a height-adjustable trolley for further moving the formwork device. By using this method, construction can be continued without dismantling the assembled formwork equipment, and the construction is simplified, labor-saving, efficient, and economical. It is.

``Means for Solving the Problems'' The present invention provides a slab formwork device mounted on a height-adjustable trolley installed between each bridge pier so that it can run freely in the transverse direction of the slab to be constructed. The slab is placed movably in the longitudinal direction so that slab concrete can be poured. After the concrete has hardened, the cart is moved and the slab formwork device is pulled out to the outside of the pier. The bogie installed between the piers is aligned with the previous bogie, a rail is erected between the movable bogies, and the slab formwork device is moved to the next bogie,
The feature is that the cart is moved between the a-legs 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. Bl between each pier
On the ground C of the bridge, a pair of rails 1°1 are placed between the piers B1. B...
・Will be laid across the outside of the area. And this rail 1
, 1, there is a bogie E1. which is large enough to fit between the piers B, , B, . . . . F4... is the wheel 4, 4-... of the running leg body 3, 3... whose height is freely adjustable by the elevation adjustment mechanism 2.
・ are placed on the rails 1.1 and pier B1. It is possible to run and move from the space between B and -... to the position where it is completely pulled out. Also,
Each trolley E1... is provided with a pair of rail members 5.5 on its upper surface along the longitudinal direction of the slab to be constructed. Rest parts 6, 6 are formed. Then, each trolley E1. E
! It is necessary to place the rail member 5.5 on the rail 1°1 so that the upper surfaces of the rail members 5.5 are flush with each other.Therefore, as shown in the figure, there are no undulations or undulations on the ground C. If there is a slope, the height of each cart should be made different in advance during construction, or each traveling leg 3.3 of the cart should be modified to adjust its height, and each cart Et, &-・are on the same page.

Reference numeral 7 denotes a slab formwork device that is commonly placed on each truck E, and is mounted on a pedestal 9 that has wheels 8 mounted on its lower end that run while being guided by the rail members 5 of the truck head. It is constructed by mounting a slab formwork 10 formed by applying oil to the lower surface shape of the slab to be constructed.

At the beginning of construction, the first bogie E is in a position where it is completely pulled out from between the piers A and A, as shown by the chain line A in Figure 4, and the rail member 5 of this bogie E is The slab formwork device 7 is placed on it via wheels 8. Next, trolley E
, along rail 1°1 between piers A and A,
Secure in place. And the running leg body 3, 3...
The elevator mechanism 2 is operated to set the slab formwork 10 at a predetermined height position, and the side formwork (not shown) necessary for pouring the slab concrete D1 is sorted; Slab concrete D.

The concrete is to be poured.

Once the poured concrete has hardened, the running legs 3,
3-... operates the lifting mechanism 2 to lower the height of the slab formwork 10 and peel it off from the concrete DI. The other side formwork will also be removed. Once the peeling mold of the slab formwork 10 is completed, move the trolley E1 and move the formwork device 7 to the bridge 11QIA.
, and pull it out to the outside of A. Then, connect the next bogie island installed between the next leg a to this bogie E1 as shown in Figure 4.
Rails 11.11 (Figs. 2 and 4) were erected between the platform parts 6 and 6 of both carts E, , &, parallel to each other, and both carts E, , E, Each rail member 5,
5 to communicate via a rail 11. If the slab formwork device 7 is pushed in this state, the slab formwork device 7 will move across the rail 11 from the first truck head to the next truck head as shown in Figure 2, and then move across the rail 11 as shown in Figure 3. It will be placed in a position as shown in FIG. 4(b).

After the slab formwork device 7 has been transferred to the next bogie E in this way, the crossing rail 11 is removed and the bogie island is moved to the next pier B.

The slab formwork 10 is set in a predetermined state and the slab concrete 8 is poured in the same manner as in the case of the pier gap B1. By repeating the above steps, the slab concrete between each pier will be constructed following JIB.

"Effects of the Invention" As explained above, the present invention provides a slab formwork device mounted on a height-adjustable trolley installed between each ViA leg so as to be able to travel in the transverse direction of the slab to be constructed. is placed movably along the longitudinal direction of the slab so that slab concrete can be poured, and after the concrete has hardened, the cart is moved and the slab formwork device is pulled out to the outside of the pier. The cart installed between the next piers is aligned with the Sagi cart, a rail is built across between the side carts, the slab formwork device is moved and placed on the next cart, and the cart is moved between the piers. Since concrete slabs can be placed using conventional construction methods, slab formwork can be assembled for each work section,
Not only can the initially assembled large formwork be moved and used repeatedly without dismantling it, but it is also possible to assemble and dismantle the shoring between each leg to support the slab formwork. Complex and time-consuming work is eliminated, and slab formwork can be supported and moved extremely easily using movable carts placed between each pier. It has the excellent effect of being extremely smooth and easy to move from one to the trolley, greatly simplifying the grinding of slab concrete for elevated bridges, etc., and making the construction work labor-saving, efficient, and economical. It is something that you have.

[Brief explanation of the drawing]

The drawings schematically show examples of the construction method of the present invention. Figure 1 is a side view showing the slab formwork device set between the original bridge piers, and Figure 2 is a side view showing the slab formwork device set from the original truck. 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 moving process of the slab formwork device. It is.

Claims (1)

[Claims] A slab formwork device is placed on a height-adjustable trolley that is freely movable along the transverse direction of the slab to be constructed between each pier, and is movable along the longitudinal direction of the slab. After the concrete has hardened, the slab concrete is 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 piers is aligned with the previous one. A rail is constructed between both bogies,
A mobile formwork construction method for slab concrete for viaducts, etc., characterized by moving and placing the slab formwork device on the next trolley, and then moving the trolley between the piers to enable pouring of slab concrete. .