JP2662373B2 - Disc form unit for floor slab - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a factory with a part of a slab reinforcing bar attached to a deck plate serving as a discarded form, and then shipping the same to a building site to carry the remaining slab. The present invention relates to a discarded formwork unit for constructing a floor slab of a building by placing concrete after installing reinforcing bars.

[0002]

2. Description of the Related Art An example of this type of discard formwork unit for a floor slab is disclosed in Japanese Patent Laid-Open No.
49341, JP-A-4-149342, JP-A-4-149.
There is a floor structure disclosed in Japanese Patent No. 176941. In these floor structures, as shown in FIG. 1, a spacer 2 for maintaining a space in the height direction is welded to the upper surface of the deck plate 1, and the deck plate 1 and the spacer 2 are provided as slab reinforcement. A plurality of box girders 3 formed in a box shape are integrally attached. The box girder 3 is provided with gate-shaped frame-shaped end fixing members 4, 4 erected at both ends in the longitudinal direction of the deck plate 1, and is bridged between the end fixing members 4, 4. An upper chord member 5 and a lower chord member 6 whose parts are fixed to the end fixing members 4, 4; And a vertical lattice member 8 connecting the adjacent upper chord material 5 and lower chord material 6 in a staggered manner. Box girder 3 above
Are placed on the deck plate 1 and the end fixing members 4, 4
Is fixed to the deck plate 1 and the lower chord material 6 is placed on the top of the spacer 2 protruding in a mountain shape and fixed to the spacer 2 to form a floor slab integrally formed as a whole. It is a floor structure that constitutes the scrap frame unit 9 for use. The above-mentioned discarded formwork unit 9 is produced in advance in a factory, packed in a state where a predetermined number of sheets are stacked, loaded on a truck or the like, carried into a construction site, and then moved to a scaffold provided between steel beams assembled with a crawler crane. It is unloaded by a heavy machine such as, and is unpacked and distributed to a predetermined place by human power for use.

[0003]

In the case of the above-mentioned conventional discarded formwork unit, since it has a height dimension close to the thickness of the floor slab, it is bulky and inconvenient to handle. Even if the packing height is the same, the number of products to be loaded is reduced, so that the packing cost and the transportation cost are increased, and the work efficiency of the unloading by the heavy equipment is reduced and the cost is increased. Therefore, in the present invention, in order to solve these problems of the prior art, a slab reinforcement is connected to a deck plate so as to be foldable, and a floor slab capable of handling such as transportation and unloading with a reduced height dimension. To provide a formwork unit.

[0004]

In order to achieve this object, a discarding frame unit for a floor slab according to the present invention has a deck plate serving as a discarding frame for a floor slab, and is fixed to an upper surface of the deck plate. And a slab reinforcing bar mounted on the spacer, and a lower end side of the slab reinforcing bar is rotatable with respect to the spacer so that the slab reinforcing bar can be folded on the deck plate. It is connected to.

[0005] In another embodiment of the present invention, the slab reinforcement includes an end fixing member erected on both longitudinal ends of the deck plate,
An upper chord material and a lower chord material which are vertically arranged between the end fixing members and both ends are connected to the end fixing material, and a vertical lattice material connecting the upper chord material and the lower chord material. A plurality of sets of the slab reinforcement are arranged in parallel on the deck plate in such a manner that the lower chord material is placed on the spacer, and the lower chord material of the slab reinforcement is rotatably connected to the spacer. Then, after being brought into the construction site, the slab reinforcement is erected and the adjacent upper chord members are connected by a connection holding material.

[0006] In still another embodiment of the present invention, the reinforcement for slabs includes an end fixing member erected on both ends in the longitudinal direction of the deck plate, and Upper and lower chords are disposed vertically between the end fixing members and both ends are separated from the end fixing members, and a vertical lattice member connecting the upper and lower chord members, In this slab reinforcement, a plurality of sets are arranged in parallel on the deck plate in such a manner that the lower chord material is placed on the spacer, and the lower chord material of the slab reinforcement is rotatably connected to the spacer. The end fixing material is formed in a gate shape straddling the adjacent slab reinforcement, and the base of the end fixing material is extended to the outside of the deck plate at the end of the deck plate. To the building site. By standing the slab reinforcement and so as to connect the ends of the upper chord member and the lower chord member in the end portion fixing member.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of the present invention; FIG. As shown in FIG. 2, a spacer 12 is welded to an upper surface of a deck plate 11, and end fixing members 13, 14, an upper chord member 15, and a lower chord member are provided on the deck plate 11 and the spacer 12, as shown in FIG. A slab reinforcing bar 20 composed of a vertical lattice member 16 and a vertical lattice member 17 is arranged in parallel.
6 are connected to the deck plate 11 via a tying member 18 rotatably connecting the spaces between the upper chord members 15, 15. It is detachably connected. The end fixing members 13 and 14 and the upper chord material 15 and the lower chord material 16 serving as main reinforcing bars are desirably formed of deformed reinforcing bars having a large contact area in order to improve the adhesion to the cast concrete.

[0008] The deck plate 11 is a discarded frame plate for constructing a reinforced concrete floor by cast-in-place concrete erected between beams of the frame construction method. As shown in detail in FIG. Hook-shaped engaging portions 21 and 22 are provided at both ends in the transverse direction to be connected to another deck plate arranged adjacently. ing.
The spacers 12 are provided for properly maintaining the gap between the deck plate 11 and the slab reinforcement 20, and are formed by bending an iron wire so that the mountain-shaped convex portions 23 and the valley-shaped concave portions 24 alternately appear. The slab reinforcement 20 is placed on the plate 11 in a manner perpendicular to the direction in which the slab reinforcement 20 extends. The mountain-shaped projections 23 are formed in conformity with the arrangement pitch of the slab reinforcement 20, and the valley-shaped recess 24 is Spot welding is performed on the deck plate 11. The slab reinforcement 20 for the spacer 12 is such that the lower chord material 16 is placed on the chevron 23 and the lower chord 16 is rotated with the chevron 23 via a detachable tie 18 as shown in FIG. It is connected as possible. In this embodiment, the concave fitting 25
The rotation is made smooth by placing the slab reinforcing bar 20 on the spacer 12 in a state where the lower chord material 16 is fitted into the concave fitting portion 25. However, the flattened convex portion is provided. There is also a mode in which the lower chord material 16 is placed on the 23.

The tying member 18 is formed by bending a tough steel wire having spring properties, for example, as shown in FIGS. 4 to 6, but other than these, Japanese Utility Model Publication No. 37-18729 and Japanese Utility Model Publication No. A well-known binding clip as disclosed in JP-A-45-32027 can be used. FIG.
4A, a U-shaped holding piece 26 formed at one end and a C-shaped engaging piece 27 formed at the other end, as shown in FIG. It comprises a holding piece 26 and a connecting piece 28 for joining the hooking piece 27. 4B, the spacer 12 is held by the free end of the holding piece 26 holding the lower chord material 16 and the joint with the connecting piece 28, and the hooking piece 27 is provided. Is attached while being wound around the lower chord material 16.
In the case of the tying tool 18B shown in FIG. 5, a U-shaped holding piece 29 formed at one end and a C-shaped formed at the other end in an inwardly facing shape as shown in FIG. Hanging piece 3
0, 31 and connecting pieces 32, 33 for joining the holding piece 29, the hooking piece 30, and the hooking piece 31 to each other.
As shown in FIG. 5B, the tying member 18B is
The spacer 12 is held by the joining portion of the holding piece 29 holding the holding piece 6 with the connecting pieces 32 and 33, and the holding piece 3 is held.
0 and 31 are attached while being wound around the lower chord material 16. In the case of the tying tool 18C shown in FIG. 6, a V-shaped holding piece 34 formed at one end and a V-shaped hooking piece 35 formed at the other end, respectively, as shown in FIG. 6A. , 36. As shown in FIG. 6B, the tying member 18C is attached in a state where the lower chord material 16 is held by the holding pieces 34 and the spacers 12 are held by the holding pieces 35 and 36.

As described above, the chevron 2 of the spacer 12 is
By connecting the lower chord material 16 of the slab reinforcement 20 placed on the top 3 so as to be rotatable via the tying member 18, the slab reinforcement 20 is raised on the deck plate 11 as shown in FIG. Can be supported freely. That is, as shown in FIG. 7A, the slab reinforcement 20 is integrally joined to the upper surface of the lower chord member 16 by welding or the like at the lower end side bent portion of the vertical lattice member 17 and the upper end of the vertical lattice member 17 is welded. The side bent portion is integrally joined to the lower surface of the upper chord material 15 by welding or the like, and the upper chord material 15 is fixed to the end fixing members 13 and 14.
The upper ends and the side surfaces are integrally joined by welding or the like, and the lower ends of the end fixing members 13 and 14 are placed on the deck plate 11. Therefore, when the slab reinforcing bar 20 is tilted as shown by the arrow, it is rotatably connected to the chevron 23 of the spacer 12 via the tying member 18 (not shown in the figure). With the lower chord material 16 as a pivot point, the slab reinforcement 20 is folded horizontally as shown in FIG. 7B. And, when the factory-discarded formwork unit 10 is shipped in the above-mentioned folded state, the height dimension is at least half that of the conventional one.
Since the following can be achieved, the cost of packing, the cost of transporting the truck, and the cost of unloading by heavy equipment can be reduced, and the handling is easy and convenient. In addition, since the structure which can separate the deck plate 11 and the slab reinforcement 20 is easier to manufacture, in the above-described embodiment, the two are rotatably connected by the detachable tie 18. The structure which cannot be removed if it is a rotatable connection state may be used.

Before being laid, the discarded formwork unit 10 carried into the building site in the folded state and unloaded is set up with the slab reinforcements 20 upright as shown in FIG. Each upper chord material 15, 1 adjacent to the streaks 20
The connection holding members 19 are mounted in a bridging manner between the 5 and connected to each other, whereby the respective slab reinforcing bars 20 stand on the deck plate 11 by themselves. As the connection holding member 19, various connection holding members can be used as shown in FIGS. 8A to 8E. Connection holding material 1 shown in FIG.
In the case of 9A, locking recesses 37 are provided at four locations where reinforcing bars are curved in an arc shape at intervals corresponding to the upper chord material 15 so as to simultaneously connect the four upper chord materials 15 arranged in parallel. Have been. In the case of the connection holding member 19B shown in FIG. 8B, the locking recess 3 similar to the connection holding member 19A is connected so that the four upper chord members 15 arranged in parallel are divided into two and connected.
8 are provided in two places. In the case of the connection holding member 19C shown in FIG. 8C, the four upper chord members 15 juxtaposed in the same manner as the connection holding member 19A are simultaneously connected, and the ends thereof are further connected to the lower chord members 16 on both sides. So that the lower chord member 16 is connected to the lower chord member 16 at the same time.
Are provided respectively. In the case of the connection holding member 19D shown in FIG. 8D, the four upper chord members 15 and the lower chord member 16 arranged in parallel are divided into two and connected respectively.
Locking concave portions 41 and 42 for the upper chord material 15 and the lower chord material 16 are provided at two places. In the case of the connection holding material 19E shown in FIG.
5 are connected at the same time, a straight connecting reinforcing bar 43 is laid on the upper chord material 15 and bound by a steel wire 44.

Next, another embodiment of the scrap mold unit according to the present invention will be described with reference to a perspective view of a main part shown in FIG. The same components as those in the previous embodiment are denoted by the same reference numerals, detailed description thereof will be omitted, and different components will be mainly described. In this embodiment, instead of the end fixing members 13 which are separated and independent from each other in the above-described embodiment, a gate-shaped end fixing member 46 is provided so as to connect adjacent ones. The holding metal fittings 4 are disposed on the deck plate 11 and rotatably support the base end of the end fixing material 46 on the deck plate 11.
7, 47 are provided so that the end fixing member 46 can be turned up and down as shown by the arrow. In order to make the end fixing member 46 rotatable, the end fixing member 46 is kept separated from the ends of the upper chord member 15 and the lower chord member 16,
After being carried into the construction site, the upper chord member 15 and the lower chord member 16 are fixed to each other by welding or the like.

In this scrap frame unit 45, when the end fixing member 46 is rotated and developed like an imaginary line, the vertical lattice member 17 and the upper chord member 5 joined via the vertical lattice member 17 are formed. The lower chord member 6 is rotated on a spacer 12 rotatably connected via a tying member 18 so that the lower chord material 6 can be folded on the deck plate 11 and the connection holding member used in the previous embodiment. The material 19 becomes unnecessary.
Therefore, when shipped in the above-mentioned folded state, as in the case of the previous embodiment, the height dimension can be reduced to at least one half or less as compared with the conventional one, so that the packing cost and truck transportation are correspondingly reduced. The cost and the unloading cost by heavy equipment can be reduced, and the handling is easy and convenient. In this embodiment, the gate-shaped end fixing members 46 are arranged in such a manner as to straddle two rows of slab reinforcing bars arranged side by side. However, the end fixing members are laid across four rows of slab reinforcing bars. There is also a form of a gate. In addition, there is also a mode in which a hinge structure is used as the holding bracket 47 or a stopper for restricting the rotation is provided so that the end fixing member 46 does not rotate more than 90 degrees as necessary.

[0014]

As is clear from the above embodiments, in the floor slab frame form unit according to the present invention, the height of the slab reinforcement mounted on the deck plate is reduced to at least half or less of the conventional one. It can be transported to the construction site in a lowered state. This facilitates handling without being bulky, doubling the number of products to be loaded at the same packing height, thereby saving packing and transportation costs, and improving the efficiency of unloading by heavy equipment, thus reducing costs. Can save money.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a floor slab discarding formwork unit according to the prior art.

FIG. 2 is a perspective view showing an embodiment of a discarded form unit of a floor slab according to the present invention.

FIG. 3 is a partial exploded perspective view of the disposal frame unit of FIG. 2;

FIG. 4 is a perspective view showing a tying tool used in the discarded frame unit of FIG. 2 and a use state thereof.

FIG. 5 is a perspective view showing another binding device used in the discarded frame unit of FIG. 2 and a use state thereof.

FIG. 6 is a perspective view showing still another binding tool used in the discarded frame unit of FIG. 2 and a use state thereof.

FIG. 7 is a side view illustrating a folded state of the slab reinforcement of the discarded frame unit of FIG. 2;

FIG. 8 is a partial cross-sectional view showing a use state of a connection holding material used in the disposal frame unit of FIG. 2;

FIG. 9 is a perspective view of an essential part showing another embodiment of a discarded formwork unit for a floor slab according to the present invention.

[Explanation of symbols]

 10, 45 Disc form unit 11 Deck plate 12 Spacer 13, 14, 46 End fixing material 15 Upper chord material 16 Lower chord material 17 Vertical lattice material 18, 18A to 18C Binding tool 19, 19A to 19E Connection holding material 20 Slab distribution Reinforcement 21, 22 Locking portion 23 Mountain-shaped convex portion 24 Valley-shaped concave portion 25 Recessed portion 26, 29, 34 Holding piece 27, 30, 31, 35, 36 Hanging piece 28, 32, 33 Connecting piece 37, 38, 39 , 40, 41, 42 Locking concave portion 43 Reinforcing bar 44 Steel wire 47 Holding bracket

Claims (3)

(57) [Claims] 1. A slab reinforcer comprising a deck plate serving as a discarding frame for a floor slab, a spacer fixed to an upper surface of the deck plate, and a slab rebar mounted on the spacer. A lower end side of the slab reinforcement is rotatably connected to the spacer so that the slab reinforcement can be folded on the deck plate. 2. The slab reinforcing bar according to claim 1, wherein the slab reinforcing bars are provided on both ends of the deck plate in the longitudinal direction, and are vertically arranged between the end fixing members. An upper chord and a lower chord connected to the end fixing material, and a vertical lattice connecting the upper chord and the lower chord are constituted, and the reinforcing bar for slab places the lower chord on the spacer. A plurality of sets are arranged in parallel on the deck plate in an aspect,
The lower chord material for the slab reinforcement is rotatably connected to a spacer, and after being brought into a building site, the slab reinforcement is erected and the adjacent upper chord material is connected by a connection holding material. Disposal formwork unit for floor slab as described. 3. The slab reinforcement according to claim 1, wherein the slab reinforcement is provided on both ends of the deck plate in the longitudinal direction, and the upper and lower ends of the slab reinforcement are vertically arranged between the ends. The upper chord material and the lower chord material separated from the end fixing material, and a vertical lattice material connecting the upper chord material and the lower chord material, and the slab reinforcing bar places the lower chord material on the spacer. A plurality of sets are arranged in parallel on the deck plate in an aspect,
The lower chord material of the reinforcing bar for slab is rotatably connected to the spacer, and the end fixing material is formed in a gate shape over the adjacent slab reinforcing bar, and the end fixing material is connected to the deck plate. The base is rotatably supported with respect to the end of the deck plate so as to be deployed to the outside of the deck. The disposable formwork unit for floor slabs according to claim 1, wherein both ends of the material are connected.