JPS5934656Y2 - Driving formwork for beams - Google Patents

Description

[Detailed explanation of the invention] This invention consists of a discarded formwork for beam pouring that will eventually be integrated with the frame;
Especially thin-walled alkali-resistant glass fiber reinforced concrete (hereinafter referred to as GRC) with slab bearing shoulders.
This relates to the disclosure of formwork frames.

However, the beam structure of this type of structure is generally constructed by constructing formwork on-site, but such formwork construction requires a large amount of formwork materials and requires special skills such as carpenters. This required a lot of time and effort for plastering, as well as a lot of time for mold-setting, curing, and demolding, which increased the construction cost and required extra construction time.

The present invention solves the inconveniences in conventional beam construction by creating a so-called permanent formwork structure that is finally integrated with the frame, and also uses this formwork material, especially GRC material, to reduce the weight of the formwork material and improve its external appearance. In order to create surface strength, it is also provided at the same time as the joining edge to the slab.

In addition, when installing this slab, the joint with the anchor bolt is made to have a certain swing width so that vibrations such as earthquakes are absorbed in the face part, and this anchor bolt insertion hole is Basically, it functions as a vent hole when pouring a concrete IJ, and the slab is installed so that there is no room for a pouring gap on the lower surface of the support.

In order to achieve appropriate and appropriate effects on such beam characteristics, the present invention particularly focuses on the purpose of constructing a beam of arbitrary length and groove shape having the width and rising width of the beam planned for the construction. In an alkali-resistant glass fiber concrete frame, the upper part of one rising side wall of the frame is bent inward, and the bent end is attached to a slab support part that stands up to the height of the upper edge of the other rising wall. At the same time, relatively large-diameter reinforcement holes are opened on the bottom surface of the frame, and vent holes and anchor bolt insertion holes are opened on the horizontal end surface of the slab support at equal intervals. The following example and considerable design changes to this example are planned along with the gist of the structure to be constructed.

The details of the present invention will be described below with reference to a typical embodiment shown in the drawings. 1 is a GRC beam form frame using an arbitrary amount of alkali-resistant glass fiber in the form of short fibers as the kneaded aggregate; Alternatively, it may be formed by spraying, extrusion, or other appropriate methods.

In addition, although the frame 1 in the illustrated example is constructed by integrally constructing an arbitrarily long length, the frame 1 is divided into arbitrary plurality of frames without being constructed integrally, and the divided frames are Of course, it was also planned that 1 would be assembled on-site.

Therefore, the frame 1 is formed into a groove shape having approximately the width and rising width of the beam planned for the structure, and the upper part of one rising wall is bent inward to form the supporting stepped portion 1a of the slab 2. , the end of this support step 1a is made to rise again to the height position 1 of the upper edge of the other rising wall, and anchor bolts 3, which also serve as air bleeders, are placed at equal intervals on the step 1a. The insertion holes 1b to 1b of the frame 1 are opened, and the insertion holes 1c to 1c of the vertical strips 4 are opened at equal intervals on the bottom surface of the frame 1.

As shown in FIG. 3, the frame 1 has both ends in the longitudinal direction so that they can be sequentially joined as male and female engagement step edges 1d, and the frame 1 has an abbreviated shape for the corner. etc. are scheduled separately.

Next, to explain the specific loading situation, the frame 1 is placed on the loading block 5 with the hole 1c aligned with the vertical strip hole 5a in the block 5, and the hoop strip 6 is inserted into the vertical strip 4. concrete γ is poured by connecting the
This poured concrete 7 is relatively uneven because it is vented with air through the hole 1b made in the step 1a, and the inside of the frame 1 is filled by quickly removing any pouring voids. .

7jh s, the anchor bolt 3 is inserted through the hole 1b and fixed, and the ALC plate, P,
A slab 2 such as a C plate is swingably attached.

The present invention has the features described above, in particular, a formwork that is integrated with the frame is prepared, and this formwork is used as the surface of the joint body, and the formwork is made of GRC material and is thin. The concrete effect of the above-mentioned rope characteristics was made possible by the fact that the formwork was provided with a receiving part for the slab, and that the tile was provided with ventilation holes.

That is, the formwork according to the present invention is not a temporary formwork but a discarded formwork,
Since the surface of the joint body is constructed, there is no need for any formwork construction, and since it is made of GRC material, it has excellent impact resistance and bending strength characteristics even though it is relatively thin.
It is said to be less likely to cause surface cracks.

Furthermore, since it is made of thin GRC material, it is lightweight, and is extremely easy to handle, and can easily be cut on site if necessary.

In addition, there is no need to separately provide a support structure for the slab 2, and since the structure of the support for the slab 2 has a certain swing width, it is a flexible structure that can sufficiently cope with earthquakes and other vibrations. This is what was said.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of a formwork that is a typical embodiment of the present invention, Figure 2 is a sectional view showing the loading structure, Figure 3 is a plan view of the formwork, and Figure 4 is a loading structure. FIG. In the diagram, 1...frame, 2...slab, 3...
Anchor bolt, 4... Vertical reinforcement, 5... Block, 6
...Huppu muscle, 7... Concrete is shown.

Claims (3)

[Scope of utility model registration request] (1) In a groove-shaped alkali-resistant glass fiber concrete frame of arbitrary length having the width and rising width of the beam planned for the structure, the upper part of one side wall of the rising edge of the frame is bent inward. Then, this bent end is made into an upright slab support by cutting it to the height of the upper edge of the other rising wall, and a relatively large-diameter reinforcement hole is made in the bottom of the frame, and the horizontal of the slab support is A beam-side driving formwork characterized in that vent holes and anchor bolt insertion holes are opened at equal intervals on the end face. (2) A claim characterized in that the frame is integrated. frame. (3) The beam-side driving formwork according to claim 1, wherein the frame is constructed by assembling a plurality of members.