JPS5996357A - False frame for concrete slab - 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 The present invention relates to a temporary frame for concrete slabs used for constructing concrete slabs such as partition walls between floors in reinforced concrete hierarchical structures.

Conventionally, when constructing this type of concrete slab, as shown in Figures 1 and 2, the required number of columns (B) with top plates (A) fixed to their upper ends are erected on the lower floor surface, The ends of each support beam (/ d), pour cast-in-place concrete on top of this temporary frame panel (d) to form a concrete slab (e), and after this concrete slab (e) has completely hardened, support columns (ro) are placed. )
The jack base (f) was operated to lower the column (b), and each support beam (c) and temporary frame panel (d) were removed from the concrete slab (e). That is, in the conventional case, the temporary frame panel (d) and the support beam (c) were simultaneously supported by the top plate (in) of the column (b).

However, it usually takes two consecutive days after concrete pouring for the concrete slab (E) to completely harden, and it takes about a week at the earliest to completely harden the concrete slab (E). Until it solidifies, the pillar (b) cannot be removed, and therefore the support beam (c) and panel (d) cannot be removed either, so they must remain attached during that time. Therefore, when constructing the upper floor concrete slab, which is usually done when the lower floor concrete slab (E) has semi-hardened (two to three days after pouring), it is natural that new support beams and panels will be used. Therefore, it is necessary to prepare a considerable number of support beams and panels in order to construct a single-story structure, which is one reason for the rise in construction costs.

In view of the above, the present invention enables support beams and panels to be removed from a concrete slab within a short period of time after concrete is poured, and allows the construction of concrete slabs for hierarchical structures to require a minimum number of support beams and panels for temporary frames. This provides a temporary frame for concrete slabs that can be used.

Next, an embodiment of the present invention will be described based on FIG. 3 and subsequent figures.

First, as shown in FIG. 3, a head jack 2 is connected to the upper end of the column main body 1a, and a beam support 3 is attached to the column main body 1.
A rectangular top plate 4 for holding the concrete slab is fixed to the upper end of the jack 2, and a pace jack 5 is installed at the lower end of the column main body 1a, and a pace jack 5 is installed at the lower end of the column main body 1a. It allows for height adjustment. In this way, the column 1, which holds the top plate 4 for holding concrete at the top and has the beam support stand 3 below it, is placed on the floor surface so that the top surface of the top plate 4 matches the bottom surface of the concrete slab 6 on which construction is to be performed. It is erected in

As shown in Fig. 5, the supports l are arranged vertically and horizontally on the floor surface, and both ends of the support beams 7 are supported on the beam support stand 3, and each support beam 7 is arranged in a straight line or in parallel. It is constructed between each support column in the form of a structure. A large number of small beams 8..., 9... are constructed above the support beam 7 in a direction perpendicular to the support beam 7, and temporary frame panels 10... are constructed on these small beams 8.9.・、
11... are installed except for 4 parts of the top plate. Most of these temporary frame panels 10.11 are rectangular temporary panels 10 whose negative side length is the same as the pitch between the support beams 7 (i.e., between the support beams 1). In the right angle direction, each side is placed in close contact with each other, and in the same direction as the support beam 7, each side is laid with a gap equal to the width of the top plate 4, and a band-shaped temporary frame is installed in these gaps. A panel 11 is fitted. In addition, the upper surfaces of these temporary frame panels 10 and 11 and the upper surface of the top plate 4 are arranged on the same plane, so that the so-called temporary frame for concrete pouring for forming the lower surface of the concrete slab 6 is formed. is forming.

In order to use the temporary concrete slab frame constructed as described above, the concrete slab 6 is formed by pouring concrete on the upper surface thereof.

After concrete is poured, the concrete usually becomes semi-hardened within two to three days, so at this point, operate the head jacks 2 at the upper end of each column 1 to support only the beam support 3 as shown in Figure 6. 1 to an appropriate height along the same axis as the concrete slab 1, and then each support beam 7 supported by this beam support stand 3 is separated from the lower surface of the concrete slab 6, and furthermore, each support beam 7 supported by this support beam 7 is Each temporary frame panel 10.
11 is also removed from the lower surface of the concrete slab 6.

At this time, as shown in FIG.
It is held only by. In addition, support beam 7
When supporting on the beam support stand 3, one or more engagement protrusions 12 are provided on the lower surface of the end of each support beam 7, and one or more engagement protrusions 12 are provided on the lower surface of the end of each support beam 7. By engaging with the hole 13, positioning is easy and construction safety can be ensured.

Each support beam 7, small beams 8 and 9, and each temporary frame panel 1 detached from the concrete slab 6 and removed as described above.
0.11 can be used as a temporary frame for concrete pouring of the concrete slab on the upper floor that is about to be constructed. Therefore, it is possible to temporarily construct a temporary frame for a concrete slab on the upper floor by simply preparing only the support column 1 separately.The concrete slab can be constructed in the same manner as described above, and then the temporary frame for a concrete slab on that floor can be constructed temporarily. The supporting beams, beams, and panels used for temporary frames can be further used to construct the concrete slabs on the upper floors, and by repeating this method, the concrete slabs on the lowest floor to the highest floor can be constructed. Construction of the concrete slabs for all floors up to the first floor concrete slab can be carried out using the minimum number of support beams, small beams, and temporary frame panels required for the construction of the concrete slabs originally used.

8 and 9 show in detail the head jack 2 and the beam support 3 which are connected to the upper end of the column 1. The head jack 2 has a nut-shaped movable member 6 screwed onto a screw rod 15 with a mounting flange 14 fixed to the lower end, and a handle 17, 17 is attached to the movable member 16. The beam support 3 is a support base. A sleeve-shaped body 19 having the same inner diameter as the opening 18a is integrally hung downward from the central opening 18a of the main body 18. This sleeve-shaped body 1
A guide protrusion 20 is protruded from a part of the inner surface, and when the beam support 3 is fitted to the screw rod 15, the guide protrusion 20
Guide grooves 2 provided in the axial direction on both sides of the screw rod 15
1 and 21 so that the beam support 3 is moved only in the axial direction along the screw rod 15.

When attaching the head jack 2 to the column main body 1a, attach the mounting flange 14 at the lower end of the rod 15 and the column main body 1a.
The mounting flange 22 fixed to the upper end may be joined with bolts or the like. In addition, concrete slab holding board 4
is fixed to the upper end of the screw rod 15 of the head jack 2.

Therefore, when operating the movable member 16, turn the handle 17.
When the movable member 16 is moved up and down, the beam support stand 3 is moved up and down in accordance with the up and down movement of the movable member 16.

In the above-described embodiment, the top plate 4 and the temporary frame panel 10.
Although only the case where the upper surfaces of the concrete slabs 11 are arranged flush so that the lower surface of the concrete slab 6 presents a horizontal surface is described, the present invention is of course not limited to this. For example, as shown in FIG. 10, if a temporary frame panel 23 is used that has a stepped portion 23a formed on the upper surface side of the end, a concrete slab 24 having ridges 24a, such as reinforcing ribs, on the lower surface can be formed. I can do it.

In this embodiment, the temporary frame panel 10.11 is separated into a portion between the top plates 4 and other portions, but a panel in which these portions are integrally joined may also be used. Further, in this embodiment, the temporary frame panel 11 between the top plates 4 is placed on the upper surface of the small beam 9, but as shown in FIG. 11A, for example, instead of the temporary frame panel 11, An auxiliary panel 4b formed of a steel plate or the like in a downward U-shape with an inner surface that is the same width as the top plate 4 may be installed between the top plates 4 by engaging the stepped portions 4a provided at both ends of the top surface of the top plate 4. Alternatively, as shown in FIG. 11B, an auxiliary panel 4c formed in the same manner as described above may be cut to the same length as the pinch of the support 1, and may be made to cover the top surface of the top plate 4. , in this case, the height of the top plate 4 is set to the auxiliary panel 4.
All you need to do is lower the plate thickness c.

In the cases shown in Fig. 11A and B, the small beam 9 between the columns 1 is not necessary, and the other small beams 8 can be placed in appropriate positions, and when removing other temporary frame panels 10, etc. These auxiliary panels 4b, 4c cannot be removed, but since these auxiliary panels 4b, 4c are small and inexpensive, even if they are prepared in large quantities, the construction cost will not be greatly affected. By supporting the concrete slab 6 with these auxiliary panels 4b and 4c until the concrete slab 6 is completely solidified without removing it, construction can be carried out even more safely and reliably.

In this embodiment, the small beam 8 is made to have the same length as the pinch of the support column 1, but it may be made longer than this and installed between three or more support beams 7. 1
If the strength of the beam 8 is sufficient, the small beam 8 may be omitted. Furthermore, since the length of one side of the temporary frame panel 10 is made the same as the pitch between the supports 1, conventionally used supports and temporary frame panels can be reused.

That is, a support frame formed by integrally connecting two pipes corresponding to the support main body 1a of this embodiment with a 4-foot pinch has been used in the past. A beam support stand as shown in FIG. Each can be used as the panel 10. However, if you are not particular about reusing conventional equipment as mentioned above, for example, as shown in FIG. It is also possible to provide the temporary frame panel 10 and the like on the step portions 7b, 7b on both sides of the protrusion portion 7a. In this way, the temporary frame panels 10 can be laid in close contact with each other in a vertical direction perpendicular to the plane of the paper in FIG. There is no need to provide it specially.

In this embodiment, the support beams 7 are installed in a straight line or parallel lines, but it is also possible to install them in a direction perpendicular to this.

In addition, in the above-mentioned embodiment, the method of erecting each pillar was not particularly explained, but for example, two pillars are integrally connected to form a set, and these are erected with a certain pinch. or, as shown in FIG. 13, two cylindrical pieces 25. that have the same inner diameter as the outer diameter of the support main body 1a.
25 are connected by a connecting piece 26 with the same pinch as that of the support 1, and the connecting tool 27 is used, and the connection is fixed by using a screw 25a.

As described above, in the present invention, columns having a top plate for holding a concrete slab at the upper end and a beam support base that can be moved up and down below are erected and arranged vertically and horizontally. It is supported on the above-mentioned beam support table and erected between the columns, and the temporary frame panels are laid on the above-mentioned support stain, excluding the above-mentioned top plate, so when the concrete slab is semi-solidified, the support beams and temporary Even if the framing panels are removed, this concrete slab is still held in place by the top plate on the columns.
There is no loss of support for the concrete slab, so the support beams and temporary frame panels removed here can be used as temporary frames for concrete pouring of the concrete slab on the upper floor. Moreover, it generally takes about two weeks for a concrete slab to completely solidify, but two to three days is sufficient for it to reach a semi-solidified state, so it is ultimately the best option when constructing concrete slabs for high-rise structures. By preparing the support beams and temporary frame panels necessary for concrete slab construction on the lower floor, at least these support beams and temporary frame panels can be applied to the concrete slab construction on all floors.
Compared to conventional temporary frames for concrete slabs, it has the special effect of significantly reducing equipment costs and contributing to lower construction costs.

In addition, by constructing the support beam in a straight line or in parallel, and interposing a large number of small beams installed perpendicularly to the support beam between the support beam and the temporary frame panel, the support beam can be constructed in a straight line or in parallel. It is possible to reduce the number of panels used and supplement the strength of the temporary frame panel.

Furthermore, by including in the temporary frame panel a rectangular shape whose side length is the same as the pitch of one of the above-mentioned columns, columns connected to a certain pinch conventionally used; Since temporary frame panels with a fixed size and width can be used, new equipment and equipment costs are not required, which is economical.

Furthermore, by constructing an auxiliary panel between the top plates that covers the top surface of the top plate, it is possible to partially omit the temporary frame panel, and the top plate supports the concrete slab until it is completely solidified. Since this increases the area of the building, construction can be carried out even more safely and reliably.

[Brief explanation of the drawings] Fig. 1 is a partial vertical sectional view of a temporary frame for concrete slabs according to the conventional method, Fig. 2 is a sectional view taken along line m-n of Fig. 1, and Fig. 3 is an embodiment of the present invention. A partial vertical cross-sectional view of a temporary frame for a concrete slab showing an example, FIG. 4 is a cross-sectional view taken along the It/-IVV line in FIG. 3, FIG. FIG. 7 is a partial vertical sectional view similar to FIG. 3 for explaining the construction method according to the embodiment of the present invention, and FIGS. 8 and 9 are a perspective view and a vertical sectional view showing a beam support and a hend handle, respectively.
FIG. 10 is a sectional view of a temporary frame panel portion showing another embodiment of the present invention, and FIGS. 11A and B are side views of a top plate portion showing an embodiment of the present invention in which an auxiliary panel is used. FIG. 12 is a sectional view of a support beam portion showing another embodiment of the present invention, and FIG.
The figure is a side view showing an embodiment of a connecting tool for connecting columns. 1... Support column, 3... Beam support base, 4... Top plate, 4b
, 4c... Auxiliary panel, 6... Concrete slab, 7... Support beam, 8, 9... Small beam, 10.11...
・Panel for temporary frame. Figure 1 Figure 2 Scissor @ Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 9 Figure 10 i! 1 Figure 11 A No. ! I Figure B Figure 12 FA Figure 13 Procedures Amendment Book C'j5 Vision 1981 3 Takumisaki Japan Patent Office Commissioner Kazuo Wakasugi (Patent Office Examiner) 1.
Indication of the case 1982 Patent Application No. 203497 2 Title of the invention Temporary frame for concrete slab 3 Relationship with each case to be amended Applicant Location (Residence) Name Inoue Tekko Co., Ltd. 4 Agent 〒 660 1-1 Nagako Nishi-dori, Amagasaki, Ujigo Prefecture (Shipping date: February 22, 1958) 6. Subject to amendment.

Claims (6)

[Claims] (1) Posts having a top plate for holding a concrete slab at the upper end and a beam support base that can move up and down below are erected and arranged vertically and horizontally, and both ends of the support beams are placed on the above beam support base. A temporary frame for a concrete slab, which is supported by and erected between pillars, and a temporary frame panel is laid on the support dyeing, excluding the top plate part. (2) A temporary frame for a concrete slab according to claim (1), wherein the support beams are installed in a straight line or in parallel. (3) For a concrete slab according to claim (2), wherein a large number of small beams installed perpendicularly to the support beam are interposed between the support beam and the temporary frame panel. Temporary frame. (4) The above-mentioned temporary frame panel has a rectangular shape in which the - side length is the same as one pinch between the above-mentioned supports, as set forth in claims (1) to (3). A temporary frame for concrete slabs as described in any of the above. (5) The temporary frame for a concrete slab as set forth in claims (1) to (4), wherein each of the pillars is integrally connected to every two of the same adjacent slots. (6) Claims Nos. (11 to (5)
Temporary frame for concrete slabs as described in ).