JPH0754045B2 - Rail movable steel formwork - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail-movable steel formwork capable of simultaneously constructing a floor formwork and a beam formwork of a required scale by arranging them in a required number in front and rear and right and left. Is.

[0002]

2. Description of the Related Art Generally, a large amount of manpower and labor are required for reinforced concrete work, but in recent years, the manpower shortage in construction work has become serious. In particular, in formwork construction, not only is there a shortage of manpower, but the shortage of skilled formworkers is becoming serious, and the development of high-strength concrete has led to the construction of high-rise buildings with reinforced concrete structures. In particular, this tendency is becoming more prominent and drastic technological development is desired.

The present invention has been proposed in view of the actual situation of such a construction site, and an object thereof is to provide a rail movable steel formwork capable of omitting the formwork work.

[0004]

In order to solve the above-mentioned problems, a rail-movable steel formwork according to the present invention is provided with a step portion at one end of the upper chord member of the frame, and one of the beam formwork is provided at the step portion. Of the upper chord member is continuous with the side wall portion and the floor plate portion, and a floor form is provided continuously with the side wall portion of the beam form member in a horizontal portion of the upper chord member except the step portion, and the beam is provided at the other end of the upper chord member. The other side wall of the formwork is provided continuously to the floor formwork, a plurality of vertical jacks are provided on the lower chord member of the frame, and the vertical jacks are provided with wheels that can slide on rails. It is composed by.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to an illustrated embodiment. FIGS. 1 and 2 show a rail-moving type large steel mold (hereinafter simply referred to as a movable mold) according to the present invention. In the figure, reference numeral 1 is a frame, 2 is a floor formwork, 3 is a beam formwork, 4 and 4 are wheels, and 5 is a rail.

A step portion 6a having a predetermined height is formed at the tip portion of the upper chord member 6 of the frame 1, and one side wall portion 3a of the beam form 3 and the bottom plate portion 3b are continuous with each other on the step portion 6a. The floor formwork 2 is attached to the horizontal part 6b of the upper chord member 6 excluding the stepped part 6a continuously with the side wall part 3a of the beam formwork 3. The other side wall portion 3c of the beam form 3 is attached to the other end of the upper chord member 6 continuously with the floor form 2. When a plurality of mobile formworks A, A are installed in a row in front, back, left and right, the floor formwork 2, 2 forms a wide floor formwork that is continuous in the front, back, left and right. Beam formwork 3,3 with a groove cross section consisting of side wall parts 3a, 3a and bottom plate part 3b between 2, 2
Are configured at regular intervals.

At both front and rear ends of the lower chord member 7 of the frame 1,
The vertical jacks 8,8 are attached to this vertical jack 8,
Wheels 4, 4 sliding on rails 5 are attached to the lower ends of 8, respectively. The movable form A can slide freely on the rails 5, and the height of the movable form A, specifically, the floor form 2 and The height of the beam form 3 can be freely changed.

The movable form A having the above structure
Is as compact as possible so that it can be transported by crane (see Fig. 3). Also, floor formwork 2
The beam form 3 is made of a steel plate so that it can be used semipermanently without any deviation. Further, it is constructed so that it can be easily assembled and disassembled by bolts or clips so that it can be easily transported and stored.

Next, a method of constructing a floor slab using this movable form A will be explained. After assembling the bar reinforcement of the column and the column form, rails 5 and 5 are installed in a plurality of rows, The mobile formwork A is installed on the rails 5 and 5 in a row in the front-rear and left-right directions. In such a case, each mobile form A, A
The floor form 2 and the beam form 3 are adjusted so as to be continuous in the front and rear and in the left and right without any gap. Further, by operating the vertical jacks 8,8, the heights of the floor form 2 and the beam form 3 of each movable form A, A are adjusted to be the same. The numbers of the rails 5 and the movable form A are appropriately determined according to the area of the floor slab to be constructed.

Subsequently, slab reinforcing bars and beam reinforcing bars are laid on the floor form 2 and the beam form 3, respectively, and when all the laying is completed, concrete is poured. Then, when the concrete is sufficiently cured and a predetermined strength is exhibited, the vertical jacks 8 and 8 are operated to lower the rail-movable formwork A and A, and the floor formwork 2 and the beam formwork 3 are demolded.

Subsequently, each movable form A is moved to the front, hung by a crane one by one, and moved to the upper floor (FIG. 3).
reference). Hereinafter, similarly, the rail 5 and the movable form A
The floor slabs and beams on all floors are simultaneously constructed by repeating the installation and adjustment of, the placement of concrete, and the refilling of the rail 5 and the movable form A to the floor immediately above.

When the construction up to the top floor is completed, the rail 5 and the movable form A are lowered to the ground.

[0013]

Since the present invention is constructed as described above, it has the following effects.

The floor formwork and the beam formwork can be constructed at the same time only by installing a plurality of mobile formwork on the rail, and the mobile formwork can be connected in front and back and left and right as needed. By installing the floor formwork and beam formwork of the required scale at the same time, extremely efficient formwork construction becomes possible, the work of formwork can be greatly omitted, and labor shortage can be solved. . In addition, since no special skill is required for assembling and removing the formwork, the shortage of formworkers can be solved.

Further, since the structure is extremely simple, repair / inspection and further washing with water can be easily carried out, and handling is also easy.

[Brief description of drawings]

FIG. 1 is a side view showing an installed state of a movable formwork.

FIG. 2 is a side view showing a state where the movable formwork is peeled off from concrete and is lowered to below the beam.

FIG. 3 is a side view showing a method of moving the movable formwork to, for example, an immediately upper floor.

[Explanation of sign]

A ... Rail movable steel form (movable form), 1 ... frame, 2 ... floor form, 3 ... beam form, 4 ... wheel, 5
… Rails, 6… Upper chords, 7… Lower chords, 8… Vertical jacks.

Claims (1)

[Claims] 1. A step portion is provided at one end of an upper chord member of a frame, and one side wall portion and a floor plate portion of a beam form frame are continuously provided on the step portion, and the step portion of the upper chord member is provided on a horizontal portion. The floor formwork is provided continuously with the side wall part of the beam formwork, and the other sidewall part of the beam formwork is provided continuously with the floor formwork at the other end of the upper chord member, and the lower chord member of the frame is provided. A rail-movable steel formwork characterized in that a plurality of vertical jacks are provided, and each of the vertical jacks is provided with a wheel that can slide on a rail.