JPH0342365B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for constructing slabs constructed on multiple rows of columns, such as elevated concrete structures for railways, roads, etc., by moving formwork between the columns. This relates to a mobile formwork method for constructing viaduct slabs.

Construction of concrete viaducts involves constructing structures of almost the same shape continuously, so it is recommended to use a method that uses mobile formwork, which is efficient and labor-saving. It is being adopted. In this type of construction method, for example, as shown in Japanese Patent Publication No. 56-37363, a large crane such as a portal crane is used to lift, lower, and move the formwork. , the equipment used to handle it becomes extremely large, and a large dedicated site is required to move the crane.
Not only does construction cost increase, but in places where there is not enough dedicated land for construction, it is not possible to introduce mobile formwork construction methods, and the traditional method of hand-assembling and hand-painting formwork construction is inefficient. The reality is that we have no choice but to do so.

The present invention solves the drawbacks of the conventional mobile formwork construction method as described above, allows easy handling of the formwork, enables efficient construction, and eliminates the need for large cranes, etc. to handle the formwork. The purpose of this project is to provide a new mobile formwork construction method that can significantly reduce construction costs by eliminating the need for a dedicated site for formwork handling equipment. A plurality of rows of pillars arranged at the required intervals in the length direction of the viaduct are placed opposite each other at the required intervals in the width direction of the viaduct, and between these rows of columns facing each other, a column is placed across the construction direction. A frame for supporting and moving the formwork is provided in a movable manner, and a formwork suspension cart is provided movably in the construction direction on each pillar, and the formwork is held in a predetermined position by the formwork suspension cart. Lift it up, interpose a support stand between the formwork body and the frame to support the formwork, and enable concrete pouring.
Remove the rear support stand, suspend the formwork onto the stand, pull up the hanger for the formwork, and move the formwork suspension truck and the stand on which the formwork is placed to the next construction site. It is characterized by:

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1, 1'... are the columns of the viaduct, and one column row is formed by a large number of columns 1, 1 arranged at required intervals in the length direction of the viaduct. 1, 1, and the other pillar row is formed in which a large number of pillars 1', 1' (see FIG. 6) are arranged in a row facing each other at a required interval in the width direction of the viaduct.
A bracket 2 having a wheel 3 on its upper surface is attached to the inner side of each of the pillars 1, 1', which are opposite to each other, at a required height via embedded bolts.

A pair of girder members 4a, which are mounted on the wheels 3, 3 of each column column and extend in the construction direction, that is, the length direction of the viaduct, are provided between the above-mentioned opposing columns.
4a and beam members 4b and 4 installed perpendicularly thereto.
A frame 4 consisting of a frame 4 is provided so as to be freely movable.

The construction of formwork is carried out between the four opposing columns as a unit, but as shown in Figure 1, at the beginning, a support stand 5 of the required height is placed on the pedestal 4, and then a The form body 6 is assembled and placed on. Support stand 5
is generally formed into a box frame shape by appropriately bonding rod materials, etc., and the form body 6 is a receiving frame 6a formed into a box frame shape.
It is formed by assembling a formwork 6b with a shape corresponding to the lower surface shape of the slab to be constructed above, and a window hole 6c for hanging the formwork is provided in the center of the formwork 6b. It is closed by the plug body 7 when concrete is placed.

Once the installation of the formwork body 6 is completed as described above, the formwork 8 that is necessary other than this formwork is, for example, the first
They are assembled as shown by the chain lines in the figure, and concrete 9 is poured into these forms. At that time, a hanging hole 10 for a wire for hanging the formwork is formed above the window hole 6c and communicating with the window hole 6c. This can be done by connecting a tube for forming the hanging hole 10 to the window hole 6c of the formwork 6b, pouring concrete, and removing the tube after it hardens.

Once the poured concrete has hardened, the second
As shown in the figure, the material 16 is placed on the concrete 9, and the columns 1 and 1' are placed at the next construction site.
A temporary stand 11 is placed on top, and rails 12, 12 are laid across the construction direction of each column 1, 1' via the material 16 and the temporary stand 11, and the rails 1
A formwork lifting cart 13 formed into a gate shape and equipped with a lifting device 14 is placed on 2 and 12. And the stopper 7 of the formwork
The wire 14a of the hoist 14 is stretched out, passed through the concrete hoisting hole 10 and the window hole 6c of the formwork, and the hook 14b is hung on the receiving rope 15 attached to the receiving frame 6a of the formwork body. to hang. Next, the support stand 5 is removed, the wire 14a is further extended as shown in FIG. 3, and the frame body 6 is placed directly on the stand 4.

Next, the wire 14a is hoisted up and the formwork hanging trolley 1 is
3 is moved along the rails 12 to the next construction site, and the frame 4 is also moved on the wheels 3, 3 to the next construction site as shown in FIG. Then, extend the wire 14a again, pass the hook 14b through the window hole 6c of the formwork 6b, hook it to the receiving rope 15, lift the formwork 6 as shown in FIG. 5, and insert the support stand 5 at a predetermined position. , fix the form body 6, remove the hook 14b, and wind up the rope 14a. After that, construction progresses one by one by repeating the above-mentioned operations. Further, the suspension holes 10 formed in the concrete 9 are then filled with mortar or the like.

In the above embodiment, the pedestal 4 for moving the formwork is moved by riding on the wheels 3 of the bracket 2 provided on each column 1, 1', but the means for moving the pedestal 4 is However, as shown in FIG. 7, for example, as shown in FIG.
It is also possible to install wheels 17 on the pedestal 4 and run it on rails 18, or, although not shown, rails may be laid on the ground between each column 1, 1'. However, the pedestal may be moved on this basis, and various other known means may be employed.

As explained above, the present invention movably provides a pedestal for supporting formwork between rows of pillars arranged at intervals in the width direction of a viaduct, and also provides a platform for supporting formwork on each row of pillars. A movable formwork hoisting trolley for lifting and lowering is provided, and mutual operation between the frame and the formwork hoisting trolley allows the work of setting, demolding, and moving the formwork to be repeated and repeated continuously. As a result, construction can be carried out easily, efficiently, and labor-savingly without using large-scale equipment such as cranes to handle the formwork, and without the use of supporting structures. It has many excellent effects, such as not requiring a lot of land and significantly reducing construction costs.

[Brief explanation of drawings]

The drawings show an example of the construction method of the present invention.
Figures 5 to 5 are side views explaining the steps in order; Figure 6 is a side view explaining the steps in order;
The figure is a front view in the process shown in FIG. 2, and FIG. 7 is a side view showing another embodiment of the moving means for the frame for moving the formwork. 1, 1'...Column, 2...Bracket, 3...
Wheel, 4... Frame, 5... Support stand, 6... Form body, 6b... Formwork, 6c... Window hole, 7... Plug body,
9... Concrete, 10... Hanging hole, 12... Rail, 13... Formwork suspension truck, 14... Lifting device, 1
4a...Wire.

Claims (1)

[Claims] 1. A plurality of column columns in which column bodies are arranged at the required intervals in the length direction of the viaduct are arranged oppositely at the required intervals in the width direction of the viaduct, and between these column columns facing each other, A frame for supporting and moving the formwork is provided movably in the construction direction, and a formwork suspension cart is provided movably in the construction direction on each column, and the formwork body is moved on the formwork suspension cart. The formwork is hoisted to a predetermined position, a support stand is inserted between the formwork body and the frame to support the formwork, and concrete is poured.Then, the formwork body is suspended, the support stand is removed, and the mold The method is characterized by suspending the frame body onto a pedestal, and then moving the formwork suspension cart and the pedestal on which the formwork body is placed to the next construction site.
Mobile formwork construction method for slabs such as viaducts.