JPH0339568A - Beam unit form - Google Patents

Abstract

PURPOSE:To reduce the number of struts and, at the same time, to make it possible to secure the length of a space under the beam by suspending and supporting a beam bottom form to beam side forms, and supporting the beam side forms by struts and/or suspending members. CONSTITUTION:Horizontal reinforcing members 4... of upper and lower chords are respectively combined with longitudinal joists 5 and 5 on face plates 2 and 2 to form beam side forms 1 and 1 with high ridity. A beam bottom form 6 is suspended and supported to the beam side forms 1 and 1, and the beam side forms 1 and 1 are supported by struts 29 and/or suspending members. If necessary, lower ends of the longitudinal joists 5 and 5 are cantilevered and fixed to both ends of a sleeper 10 of the beam bottom arranged in the direction of the width of the beam prevent openings of the beam side forms 1 and 1. In addition, an opening and shutting device to release the fixation to the sleeper 10 of the longitudinal joists 5 and 5 is provided, or such actions as moving casters 35 and 35 are provided to the struts 29 are taken.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a beam unit formwork, and more particularly to a beam unit formwork that can effectively utilize the area under the beam.

[Prior art] In conventional beam formwork, for each floor, panels are processed to the specified dimensions to produce a face plate, and after this face plate is assembled at the frame position on site, terminals, supports, etc. are installed at this location. We are trying to assemble steel pipe materials.

For this reason, the conventional beam formwork construction method requires a large number of formwork engineers and carpenters, making construction difficult both in terms of construction period and quality in today's labor shortage.

For this reason, in recent years, there has been a tendency for the use of separate wall/slab construction methods to rapidly increase from the standpoint of speedy construction and cost savings. In this case, a construction method is used in which terminal materials and the like are attached to a large panel in advance to form a unit, and the unit is moved to the construction site using heavy machinery or the like. In addition, by using a formwork that is highly rigid in the load direction, the number of supports can be reduced, making it possible to use more floor space under the beams.

[Problem to be solved by the invention] However, in this type of formwork, as with conventional formwork, the concrete load is transmitted directly to the columns via the joists, so in order to increase the tonality in the load' direction, for,
We are trying to deal with this by raising the height of the joists. For this reason, the joists have become large, and during the life of the beam formwork, at least an amount equivalent to the height of the joists protrudes below the beam, lowering the work space under the beams. It becomes difficult to transport formwork materials for walls and walls.

This invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a beam unit formwork that can reduce the number of supports and ensure the height of the space under the beam.

[Means for Solving the Problems] In order to solve the above problems, the present invention suspends and supports the beam bottom formwork on the beam side formwork, and supports the beam side formwork with supports and/or supports.
Alternatively, it is characterized by being supported by a hanging member.

When the beam side formwork is formed by integrally joining the top and bottom chord horizontal reinforcement members and the vertical studs at predetermined intervals to the face plate,
Provides high temperature properties.

In order to prevent the beam side formwork from opening, it is preferable to fix the lower end of the vertical end in a cantilever manner to both ends of the beam bottom arranged in the width direction of the beam.

In addition, it is convenient to install an opening/closing device to release the fixation of the vertical end to the main drawer, to support the column independently on the side formwork of the beam and attach casters for movement, and to attach a vertical sliding mechanism to the column. Good.

[Function] In this invention, since the beam bottom formwork is suspended and supported by the beam side formwork C, the rigidity of the beam bottom formwork can be reduced, and therefore the beam bottom formwork including the face plate, joists, etc. The number of frames can be reduced.

Furthermore, since the tonality of the beam side formwork has been improved, the spacing between the columns that directly support it can be increased.

In addition, the horizontal reinforcing members on the upper and lower chords allow the effective portion of the beam side formwork to be enlarged, and the vertical end pieces at predetermined intervals prevent buckling of the face plate.

Furthermore, by fixing the lower end of the vertical beam in a cantilever manner to both ends of the beam bottom installed in the width direction of the beam, the beam side formwork is prevented from opening due to the lateral pressure of the concrete.

In addition, the opening/closing device enables the removal of the beam side formwork after concrete pouring.

When the columns are supported independently and casters are attached, the entire unit formwork system, which connects the beam side formwork and the beam bottom formwork, can be moved horizontally on the floor, and the height of the columns can be changed using the vertical slide mechanism. .

[Embodiments] Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view of a beam unit form according to the present invention, and FIG. 2 is a side view.

In the face plate 2 of the beam side formwork 1 in the beam unit formwork A,
Horizontal reinforcing members 4 made of L-beam steel, for example, are fixed with screws to the upper chord of the zero-face plate 2, which has reinforcing plates 3 attached to the upper and lower outer tiers, through the reinforcing plates 3, and from the inside to the lower chord. The reinforcing plate 3 is fixed with bolts, and the vertical end pieces 5 are fixed with screws to the reinforcing plate 3 at predetermined intervals in the vertical direction. In this way, the beam side formwork 1 exhibits high rigidity in the load direction by integrally bonding the horizontal reinforcing members 4 to the upper and lower chords of the face plate 2. It should be noted that the vertical studs 5 at predetermined intervals are effective in preventing buckling of the face plate 2. The reinforcing plate 3 is attached to prevent the face plate 2 from bending outward due to lateral pressure, and the reinforcing plate 2 is preferably made of thick plywood used for scaffolding boards, for example.

The face plate 7 of the beam bottom formwork 6 has crosspieces 8 attached to both sides, for example, a joist 9 and a crosspiece 8 made of a square pipe or a round vibe.
It is supported by a large puller 10 via a large puller 10, and the lower end of the vertical end thick 5 is fixed in a cantilever manner to both ends of the large puller 10.

As shown in Fig. 3, the large pull 10 uses L-shaped steel and has a structure in which it is arranged with the bottom facing upward, and a casing 11 made of, for example, L-shaped steel is welded facing each other in the center to form a cylindrical shape. A space is formed in which the switchgear is housed.

Vertical edge 5 is shown in Figure 4~'! As shown in Fig. J6, an L-shaped steel is used, a screw hole 5a is provided on the surface that contacts the reinforcing plate 3, and an L-shaped through hole 12a, for example, is formed in the connection box 12 at the lower end, into which a wire is inserted. Furthermore, a perforated plate 14 is provided for fixing a rod 13 (FIGS. 11 and 12) of the opening/closing device. An arm 15 is connected to the connection box 12 at right angles to the vertical end 5, and this arm 15 is connected to the vertical end 5 at a place 16.

On both sides of the arm 15, downward guide portions 15a are formed for sliding on the large puller 10, and a hole 1 at the tip is formed.
5b is welded with a nut 18 for screwing the master adjustment bolt 17 of the AT end 5.

There are two types of opening/closing devices: one that can be tightened and forcibly opened (Type 1), and one that can be tightened and released (Type 2).

FIG. 7 and FIG. 8 are diagrams showing the opening/closing device (type 1).

The U plate 20 and T plate 21 of the opening/closing device 19 are connected to the cylindrical portion 1 of the large puller 10 with the holes 20m and 21a overlapping each other.
0a (Fig. 3), and the holes 20m and 21
The camshaft 22 is inserted through the elongated holes 10b and lla of the cylindrical portion 10a into the cylindrical portion 10a. Cams 22a, 22 of the camshaft 22
b is a portion corresponding to the hole 20a of the U plate 20, and T
Since the cams 22a and 22b are always in contact with both holes 20a and 21a, the rotation of the camshaft 22 causes the U plate 20 to The distance between the T-plate 21 and the T-plate 21 can be forcibly changed. Note that a lever 23 is provided on the camshaft 22, and a support plate 24 and a bolt 2
5 is supported by the elongated holes 10b and lla of the cylindrical portion 10a, and cap nuts 2 are provided at the base ends of the υ plate 20 and T plate 21.
0b, 21b are welded and the rod 13 is screwed here.
The other end is fixed to a perforated plate 14 having a vertical end thickness 5.

FIG. 9 and FIG. 10 are diagrams showing the opening/closing device (type 2). The pair of Y rings 27 of the opening/closing device 26 are provided with push plates 27a facing inward at their tips, and the push plates 27a are placed facing each other in the cylindrical portion 10a of the large drawer 10,
The camshaft 28 is inserted between the push plates 27a. camshaft 28
A cam 28a is provided at two positions on the same diameter, and when the cam 28a is brought into contact with the push plate by rotation of the cam shaft 28, the Y rings 27 can be forcibly attracted to each other. A lever 23 is similarly provided on the camshaft 28, supported by a support plate 24 and bolts 25, and a cap nut 27b is welded to the base end of a Y ring 27.

Therefore, when the opening/closing device 19.26 places the lever 23 in a horizontal state, the beam side formwork 1 is pulled inwardly by the rod 13 and comes into contact with the face plate 7 at the bottom of the beam (first
(Fig. 1), when the lever 23 is turned downward, the beam side formwork 1 is forcibly moved outward, or the fastening is released and the east side formwork can be moved outward (Fig. 12). , switchgear 1
9 (It is preferable to attach the type plate and the opening/closing device 26 (type 2) alternately for every 10 drawers.

The support columns 29 provided at two locations on the beam unit formwork A are composed of a lower frame 30 and an upper frame 31. The vertical members 30a of the lower frame 30 are inserted inside the vertical members 31a of the upper frame 31, and the upper frame 31 The connecting hole 31b of the lower frame 30 is aligned with one of the connecting holes 30b of the lower frame 30 and is fixed with a bottle. The support 29 is connected to the U-bolt 33 with the finger portion 31c of the upper frame 31 in contact with the lower surface of the horizontal reinforcing member 4 of the beam side formwork 1, and with the arm 32 in contact with the main puller 10 that sandwiches the support 29. It is fixed to the upper frame 31 via a place 34, so that the column 29 can stand on its own with the formwork device mounted thereon. Furthermore, casters 35 and jacks 36 are attached to the lower frame 30 of the support column 29.

Therefore, the beam side formwork 1 and the beam bottom formwork 6 are manufactured to a predetermined size according to the cross-sectional shape and length of the beam, and are assembled in advance. Lever 2
3 is tightened to fix it in position (Fig. 11).

Then, use a crane etc. to lift it up to the installation floor and move it.
It is manually moved horizontally to a predetermined position using the casters 35 of the support 29. Furthermore, the height is adjusted using jacks 36 and set at the frame position.Finally, auxiliary formwork is attached to the connection with the columns, and concrete is poured. In addition, if the upper part of the beam side formwork 1 moves outward due to lateral pressure during concrete pouring, the bolt 17 of the arm 15 of the vertical end thick 5 should be tightened to adjust the construction. An anchor 37 is attached in advance to the face plate 7 at the bottom of the beam.

To remove the formwork, open the opening/closing device 26 (type 2) and then open/closing device 26 (type 2). 9 (Type 1) Open state,
The beam side formwork 1 is forcibly pulled outward. After demolding is completed, attach the pulley 38 to the anchor 37 at the bottom of the beam, and with the chiller 39 and wire 40 set,
6 and pull out the bottle from the connecting holes 30b and 31b,
While loosening the chiller 39, the entire formwork device is lowered to a position at least below the frame beam, and with the support columns 29 contracted, it is moved horizontally to, for example, an external stage and carried out, and then hoisted to the upper floor by a crane again for reuse. can do.

Furthermore, since the beam side formwork 1 has increased rigidity in the load direction, the number of supports 29 can be reduced.

Furthermore, since the joist 9 at the bottom of the beam can be of the same size as a normal one, the height of the formwork material does not differ significantly from the conventional one. It is ideal for the wall/slab separation construction method because it allows a wide working space and passageway under the beam, and it also allows for easy removal of preceding column and wall formwork materials.

In addition, since the horizontal reinforcing members 4 are integrally connected to the upper and lower chords of the face plate 2 on the beam side, the height of the effective part of the beam side form l can be easily secured, and the beam side form l is relatively It can be made lightweight.

In this way, in this beam unit formwork A, the formwork dimensions are adjusted at the time of device assembly, and there is no need to adjust the dimensions of beams with the same cross section thereafter, and the lower end of the vertical end 5 is fixed in a cantilever manner. , no separator is required. Therefore, assembly and disassembly can be performed only by operating the levers of the opening/closing devices 19 and 26, and the dimensions of the frame are always the same, improving accuracy. Also,
The opening/closing device 19.26e prevents damage to the frame during demolding.

Furthermore, the sliding mechanism of the support column 29 allows it to be used for beams with different floor heights, so even if the cross section of the beam changes, the face plate 2.
This can be addressed by changing 7.

In addition, since the beam side formwork 1 etc. are made into units, the labor required for the work is greatly reduced, and only a small number of formwork engineers and carpenters are required.

In addition, in the above embodiment, the beam bottom formwork was suspended and supported by the beam side formwork, and the beam side formwork was supported by the pillars.
The beam side formwork may be supported by a hanging member, and this hanging member is configured to suspend the beam side formwork from a steel frame or the like using, for example, a hanging bolt.

[Effects of the Invention] As explained above, in the present invention, the beam bottom form is suspended and supported by the beam side form, and the beam side form is supported by the support and/or the hanging member. The height of the space under the beam can be secured by reducing the formation of the beam bottom formwork, and the number of columns can be reduced by increasing the spacing between the columns. Therefore, even during curing after concrete pouring, a wide working space and passageway can be secured under the beams, and materials can be easily transported.

In addition, by integrating horizontal reinforcing materials at the top and bottom chords of the face plate, the effective height of the beam side formwork can be easily secured, and the beam side formwork can be made relatively lightweight while maintaining high rigidity. can.

Furthermore, since the lower end of the vertical shaft is fixed in a cantilevered manner, a separator is unnecessary, and furthermore, assembly and disassembly can be performed with one touch using the opening/closing device.

In addition, since the pillars are self-supporting, the beam unit formwork apparatus can be easily horizontally moved onto the floor using the casters while the beam side solid frame and the beam bottom wall frame are still connected.

Furthermore, by changing the height of the formwork device using the vertical slide mechanism, it can be used for beams with different floor heights.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the beam unit formwork of the present invention, Fig. 2 is a side view, Fig. 3 is a perspective view of the main drawer, Fig. 4 is a side view of the vertical end, and Fig. 5 is the fourth Fig. 4. FIG. 6 is a Vl-Vl sectional view of FIG. 4, FIG. 7 is a perspective view of the opening/closing device (type 2), and FIG. 8(a). (b) is a diagram showing the relationship between the rotational position of the camshaft plate and the T plate, FIG. 8(a) is a diagram in a tightened state, FIG. 8(b) is a diagram in a forced open state, Figure 9 is a perspective view of the opening/closing device (type 2), Figures 10 (a) and (b) are diagrams showing the relationship between the Y plates depending on the rotational position of the camshaft, and Figure 10 (a) is FIG. 10(b) is a diagram of the tightened state, FIG. 10(b) is a diagram of the open state, FIGS. 11 and 12 are cross-sectional views of the beam unit formwork, and FIG.
FIG. 2 is an open view, FIG. 13 is a sectional view of the beam unit formwork showing a state of demolding, and FIG. 14 is a side view. In the figure, symbol A is the beam unit formwork, 1 is the beam side solid frame, 2 is the face plate, 4 is the horizontal reinforcement, 5 is the vertical end, 6 is the beam bottom wall frame, 1
0 is a puller, 19.26 is an opening/closing device, 29 is a column, 35 is a caster, and 36 is a jack.

Claims (1)

[Claims] 1. A beam unit formwork in which a beam bottom formwork is suspended and supported by a beam side formwork, and the beam side formwork is supported by columns and/or hanging members. 2. The beam unit form according to claim 1, wherein the beam side form is formed by integrally joining horizontal reinforcing members on the upper and lower chords and vertical end pieces at predetermined intervals to the face plate. 3. The beam side formwork is formed by joining and integrating horizontal reinforcing members on the upper and lower chords and vertical studs at predetermined intervals to the face plate, and the lower ends of the vertical studs are arranged in the beam width direction. The beam unit formwork according to claim 1, wherein the beam unit formwork is fixed in a cantilever manner to both ends of the main drawer of the device, and the beam side formwork is supported by pillars. 4. The beam unit formwork according to claim 3, further comprising an opening/closing device for releasing the fixation of the vertical end thickness to the large drawer. 5. The beam unit formwork according to claim 1 or 3, wherein the support column is independently supported by the beam side formwork and is provided with casters for movement. 6. The beam unit formwork according to claim 1 or 3, wherein the support column has a vertical sliding mechanism.