JPH03295979A - Frame and construction method using frame thereof - Google Patents

Abstract

PURPOSE:To improve the working efficiency by forming a frame with a beam side plate and wall side plate in a body and another frame with a beam side plate, beam bottom plate, and wall side plate continuously arranged and by enforcing the wall side plate and beam bottom plate of the other frame by means of a supporting member. CONSTITUTION:A thick lateral ends 12 are vertically arranged in parallel with each other in spaced relation at a fixed intervals to the thick vertical ends 11 of the right and left end side sections of the first frame 10, and a through panel 10P, which is formed with a beam side plate and wall side plate in a body in the same face, is fixed to the thick lateral end 12. In the next step, a thick lateral ends 22 are vertically arranged in parallel with each other to the upper section of the thick vertical ends 21 of the right and left end side sections of the second frame 20, and a beam bottom plate 20P2 is connected to the beam side plate P1, which is fixed to the thick lateral side 22 in a body, and in addition a wall side plate 20P3 to the beam bottom plate 20P2 in a body to support and fix the beam bottom plate P2 and wall side plate P3 through a supporting material 23. After assembling the first frame 10 and second frame 20, a wall A and beam B are formed in a body by concreting.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a formwork used at a construction site and a construction method using the formwork.

[Prior Art] Conventionally, there is a method in which a large formwork is used to combine a beam form with a concrete dam plate, and concrete for walls and beams is poured at the same time. In this method, as shown in FIG. 7, a pair of large formworks P are placed facing each other at a predetermined interval, and concrete is poured between them to simultaneously form the wall a and the beam.

[Problem to be solved by the invention] In the case of such conventional formwork construction method, the width d of the bottom of the beam is usually 50-150 mm, and it can be used in buildings such as condominiums for gable spans, door spans, etc. It was limited to boundary walls, etc. Therefore, for girder spans, etc., concrete is poured using conventional formwork, and PC (precast concrete) or AL
The construction methods are different, such as using materials such as C (lightweight aerated concrete) for the walls and pouring concrete for the beams, resulting in soaring costs, increased labor, and decreased work efficiency.
This caused various problems such as difficulty in process control.

The problem can be solved by increasing the projecting width of the beam bottom, but doing so makes it difficult to form a large formwork because demolding cannot be done, and even if it were possible, the supporting capacity of the beam bottom would have to be increased. This makes the structure of the formwork complicated, and it becomes very difficult to handle it for reuse on site.

The present invention was made in order to solve all the problems of the conventional methods as described above.
Proposal of a formwork that has a large supporting capacity at the bottom of the beam, is simple in construction, is easy to handle for reuse on site, and can be repurposed more often on site, and a construction method using the formwork. The challenge was to

[Means for Solving the Problems] As a means for technically solving the above-mentioned problems, the present invention includes one formwork, and a formwork fixed to the one formwork at a position facing the other formwork at a predetermined distance. The other formwork has a beam side plate and a wall side plate integrally formed on the same surface, and the other formwork has a beam side plate and a beam bottom plate that correspond to the beam side plate. and a wall side plate corresponding to the wall side plate are arranged in series, and a formwork is provided with a supporting material for reinforcing the wall side plate of the other formwork and the beam bottom plate.

Further, in the present invention, after pouring a slab, a pair of ruler angles are fixed at a predetermined position on the slab, and the other formwork suspended by a crane is lowered and its lower end is attached to the one side ruler angle. After installation, one of the formworks is also installed on the ruler angle on the other side, and the two formworks are tightened and fixed through tie bolts, and concrete is poured between the formworks to connect the walls and beams. The gist is a construction method that simultaneously forms the

[Function] According to the above two formworks, it is possible to simultaneously form a large beam with a biased wall, and the bottom of the beam can be supported by the support material, and the structure is It is simple and inexpensive, easy to assemble and demold, and easy to handle on site (allowing for an increase in the number of uses).

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.

In FIGS. 1 and 2, lO is the first formwork,
Horizontal shafts 12 of I-beams are arranged vertically and vertically on the vertical shafts 11 at both left and right ends at regular intervals, and beam side plates and wall side plates are integrated into one piece on the same side. A formed through panel IOP is attached. Reference numeral 20 denotes a second formwork, in which horizontal studs 22 for a beam of one beam are arranged vertically above the vertical studs 21 at both left and right ends, and beam side plates 20P+ are attached to these horizontal studs 22. The beam bottom plate 20P2 is attached to the beam side plate 20P+, and the wall side plate 20P is attached to the beam bottom plate 20P2.
3 are connected and integrated, respectively, and the beam bottom plate 20P2 and the wall side plate VOP3 are held and fixed via a ladder-like support member 23. That is, the horizontal end 24 of the I-beam is fixed between the upper end of the support member 23 and the beam bottom plate 2°P2 to receive the beam bottom plate 20P2, and the support member 23
Between the side end portion of the I-beam and the wall side plate 20P3, horizontal ends 25 of the I-beam are vertically arranged in parallel at regular intervals.

Reference numeral 26 indicates a receiving end angle of the beam bottom plate 20P2. The support member 23 is fixed to the vertical end 21 of the second formwork 20. Further, on the back side of the second formwork 20, a jack 40 for adjusting construction is attached as shown in FIG.

The formwork according to the present invention is configured as described above, and the first formwork 10 and the second formwork 20 can be lifted by a crane or the like via the hanging fittings 13 and the hanging fittings 27, respectively. Formwork for pouring concrete can be easily assembled at the construction site. For this assembly, first, after concrete is placed on the slab 50, it is marked and a pair of ruler angles 51 are fixed in a predetermined position (however,
By this time, steel frame work, beam and wall reinforcement work, etc. should be completed.) Next, while suspending the second formwork 20 with a crane or the like, install the lower end of the wall side plate 20P3 along the redundancy angle 51, and roughly adjust the height using the construction adjustment jacks 40. Create a vertical structure. After that, while suspending the first formwork IO with a crane or the like,
The first and second formworks 1O120 can be assembled by installing the lower end of the through panel IOP along the other ruler angle and tightening it through tie bolts 52 as shown in FIG. At this time, the vertical position is corrected using the jack 40 to ensure correct positioning. Finally, the formwork assembly is completed by connecting with a head connecting angle (not shown). Incidentally, 53 is an adjustment camber placed under the vertical end thickness.

After assembling the formwork in this way, by pouring concrete, wall A and beam B can be integrally formed as shown by diagonal lines in Figure 2. In this case, wall A is connected to beam B. The beam B has a shape that is biased to one side, and the beam B can be formed to have a large peak width.

To remove the mold after pouring concrete, remove the head connecting angle, pull out the tie bolt 52, loosen the jack 40, remove the adjustment camber 53, and remove the first and second formwork 10.20. I can do it. After demolding, these formworks will be lifted up by a crane and transported to the next construction area where they will be used repeatedly to proceed with the construction work. First,
The width of the second formwork 10.20 suitable for pouring concrete in one section is determined in advance by indexing.

In the embodiment, the beam bottom plate 20P in the second formwork 20
2 and a ladder-shaped support material 23 for reinforcing the wall side plate 20P3.
However, it is also possible to use a reinforcing panel instead of the supporting material 23.

An example is the third formwork 30 shown in FIG. 3, in which the beam side plate 30P is a flat plate extended to the lower end, and the beam bottom plate 30P2 and wall side plate 30P3 are attached to the beam side plate. A support panel 30P4 is inserted into the space so that the beam bottom plate 30P2 and wall side plate 30PG can be supported. Incidentally, between the beam side plate 30P extended to the lower end and the vertical beam 31, horizontal beams 32 of the I-beam are vertically arranged at regular intervals.

As a partner of this third formwork 30, the first formwork 1
0 can be used. The advantage of this third formwork 30 is that the structure of the formwork is simple, and when two third formworks 30 are used side by side between columns C as shown in FIG. In addition, a long support panel 30P1 is attached to the two bases.
If you insert 5, you can share it.

In the case of the present invention, since the wall can be formed by shifting to one side with respect to the beam, it is not limited to a normal continuous wall, but by switching the left and right sides of the formwork, a wall with a crank-shaped plane as shown in Fig. 5 can be formed. A, A' can also be formed, in which case the connection between the two walls can be supplemented by a suitable auxiliary formwork (not shown).

Figure 6 shows the outer wall E side and the inner wall F side with pillar C as the center.
This shows the means for fixing the formwork when concrete is poured on both sides at the same time.
is attached, a bracket H is attached to the formwork FP on the inner wall F side, and a hook I is pivotally supported at the tip of the arm G.
This hook is made so that the tip of the metal I can be unlatched onto the metal fitting H using a lock pin J.

[Effects of the Invention] As explained above, according to the present invention, it is possible to simultaneously form large beams with offset walls and large ridge widths by pouring concrete, so it is possible to form girder spans that were previously impossible. It is possible to reduce costs, reduce labor force, improve work efficiency, and facilitate process control. In addition, the formwork has a simple structure and can be demolded easily, has a large support capacity at the bottom of the beam and is highly reliable as a formwork, and is easy to handle on site and can be used more frequently. It has excellent effects.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a formwork showing one embodiment of the present invention, Fig. 2 is a vertical sectional view of the main part thereof, and Fig. 3 is a sectional view of the main part showing another embodiment of the formwork. FIG. 4 is a plan view showing a construction example of the present invention, FIG. 5 is a plan view showing another construction example, FIG. 6 is an explanatory diagram showing a plan view of an example of fixing formwork in the vicinity of a column, and FIG. 7 is a schematic cross-sectional view showing a conventional formwork. ! O...First formwork 10P...Through panel II...Vertical end thickness 12...Horizontal end thickness 13.
...Hanging fittings 20...Second formwork 20P+
...Beam side plate 20P2...Beam bottom plate 20P3.
...Wall side plate 21...Vertical edge 22...Horizontal edge 23...Support material 24.25...Horizontal edge 26...End edge angle for receiving 27...Hanging metal fittings
30...Third formwork 30P,...Beam side plate
30P2... Beam bottom plate 30P3... Wall side plate 30P 4.30P 6... Panel for support material 40...
・Adjustment jack 50... Slab 51... Ruler angle 52... Tie bolt 53... Adjustment camber

Claims (2)

[Claims] (1) It has one formwork and the other formwork fixed at a position facing the one formwork at a predetermined interval, and the one formwork has a beam side plate and a wall side plate. The other formwork is integrally formed on the same surface, and the other formwork includes a beam side plate corresponding to the beam side plate, a beam bottom plate, and a wall side plate corresponding to the wall side plate, and
A formwork characterized in that a support member is provided for reinforcing the wall side plate and the beam bottom plate of the other formwork. (2) After pouring the slab, fix a pair of ruler angles at a predetermined position on the slab, lower the other formwork suspended by a crane, and install its lower end on the one side ruler angle; After this, one of the formworks is also installed on the ruler angle on the other side, and the two formworks are further tightened and fixed through tie bolts, and concrete is poured between the formworks to simultaneously connect the wall and beam. A construction method characterized by forming.