JP7082009B2 - Reinforcing bar structure and synthetic slab structure with the reinforcing bar structure - Google Patents

Description

The present invention relates to a reinforcing bar structure that supports a reinforcing wire mesh and a synthetic slab structure including the reinforcing bar structure.

Conventionally, in the synthetic slab structure, a reinforcing wire mesh such as a welded wire mesh supported by a reinforcing bar structure is installed on the upper surface of a corrugated steel plate in which a mountain top surface portion and a valley bottom surface portion are alternately connected via an inclined portion to form a corrugated cross section. The structure formed by casting concrete is known. The reinforcing wire mesh is installed as a reinforcing member of concrete (for example, a structural material or a crack expansion preventing bar).

For example, in Patent Document 1, a main bar arrangement in which reinforcing bars are fixed at a predetermined height is arranged at equal intervals on a base such as a corrugated steel plate, and a welded wire mesh is arranged on the reinforcing bars. The main bar arrangement is welded and fixed to a pair of lattice-shaped bent reinforcing bars and the upper end bent portion of the bent reinforcing bars, and is welded and fixed to the upper end bars joining the pair of bent reinforcing bars and the lower part of each bent reinforcing bar. It is composed of the lower end bar and the lower end bar. At the lower end of each bent reinforcing bar, a bearing portion that expands outward is formed.

Jikkenhei 5-42432 Gazette

The reinforcing bar structure as disclosed in Patent Document 1 is transported in a state of being assembled in the manufacturing process in order to facilitate on-site construction quickly and easily. In the main bar arrangement body having the above configuration, it is difficult to stack and transport a plurality of bodies, so that the transport efficiency is poor, and it takes time and cost to transport. On the other hand, if it is assembled on site, it takes time and effort, and the construction takes a long time, so that the construction cost may increase. In addition, since it is designed in advance to fit the dimensions of the corrugated steel sheet and adjusted to the target height of the welded wire mesh, it is possible to adjust the height of the welded wire mesh appropriately at the construction site and install it. Can not. That is, it is necessary to manufacture a reinforcing bar structure having various forms depending on the shape and size of the corrugated steel sheet, which is costly to manufacture.

The present invention solves the above-mentioned problems, can improve the transportation efficiency from the manufacturing site to the construction site, can be easily assembled at the construction site, can improve the workability, and further. It is an object of the present invention to provide a reinforcing bar structure capable of improving the function and synthetic effect of concrete such as strength and crack prevention performance, and a synthetic slab structure including the reinforcing bar structure.

(I) The reinforcing bar structure according to the present invention is formed by crossing a pair of diagonal members, and is fixed to a plurality of support members arranged at intervals in one direction and a plurality of support members above the diagonal members. The support member is provided with an upper chord member that integrally connects the support members, and one of the pair of diagonal members is composed of two or more wires, and the other diagonal member is made of one or more wires. It is configured so that the wire of the other diagonal is arranged between the wires of the diagonal, and the support member is configured to be foldable by rotating around the intersection of the pair of diagonals. Is what you are doing.

(Ii) In the synthetic slab structure according to the present invention, a corrugated steel plate in which a mountain top surface portion and a valley bottom surface portion are alternately connected via an inclined surface portion to form a corrugated cross section and a corrugated steel plate arranged on the valley bottom surface portion of the corrugated steel plate (i). The reinforcing bar structure described in the above, the reinforcing wire net arranged on the upper surface of the reinforcing bar structure, and the concrete cast on the upper surface of the corrugated steel plate are provided.

According to the present invention, since the support member is configured to be foldable, it can be transported from the manufacturing site to the construction site in a folded state, and the transport efficiency can be improved. In addition, after being transported to the construction site, the support member can be easily assembled by simply unfolding the support member from the folded state, so that the workability at the site can be improved. Further, by integrating the reinforcing bar structure, concrete and corrugated steel plate, the strength, function and synthetic effect of the synthetic slab structure can be enhanced.

It is a perspective view which showed the synthetic slab structure provided with the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is a perspective view which showed the state which installed the reinforcing bar structure which concerns on Embodiment 1 of this invention on a corrugated steel plate. It is a front view which showed the state which installed the reinforcing bar structure which concerns on Embodiment 1 of this invention on a corrugated steel plate. It is a perspective view of the support member of the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is explanatory drawing which showed the state which the support member of the reinforcing bar structure which concerns on Embodiment 1 of this invention was folded. It is explanatory drawing which showed the state which changed the height by rotating the support member of the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is an enlarged view of the main part which showed an example of the hinge mechanism part of the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is an enlarged view of the main part which showed an example of the hinge mechanism part of the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is sectional drawing of the synthetic slab structure provided with the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is sectional drawing which showed the corrugated steel plate of the synthetic slab structure provided with the reinforcing bar structure which concerns on Embodiment 1 of this invention. It is a perspective view which showed the state which installed the reinforcing bar structure which concerns on Embodiment 2 of this invention on a corrugated steel plate. It is a front view which showed the state which installed the reinforcing bar structure which concerns on Embodiment 2 of this invention on a corrugated steel plate. It is sectional drawing of the synthetic slab structure provided with the reinforcing bar structure which concerns on Embodiment 2 of this invention. It is explanatory drawing which showed the procedure of installing the reinforcing bar structure which concerns on Embodiment 2 of this invention on a corrugated steel plate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and the description thereof will be omitted or simplified as appropriate. In addition, the shape, size, arrangement, etc. of the configurations shown in each figure can be appropriately changed within the scope of the present invention.

Embodiment 1.
First, the reinforcing bar structure 100 according to the first embodiment will be described with reference to FIGS. 1 to 10. FIG. 1 is a perspective view showing a synthetic slab structure including a reinforcing bar structure according to the first embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the reinforcing bar structure according to the first embodiment of the present invention is installed on a corrugated steel plate. FIG. 3 is a front view showing a state in which the reinforcing bar structure according to the first embodiment of the present invention is installed on a corrugated steel plate. FIG. 4 is a perspective view of a support member of the reinforcing bar structure according to the first embodiment of the present invention. FIG. 5 is an explanatory view showing a state in which the support member of the reinforcing bar structure according to the first embodiment of the present invention is folded. FIG. 6 is an explanatory diagram showing a state in which the height of the support member of the reinforcing bar structure according to the first embodiment of the present invention is changed by rotating the support member. Note that FIG. 1 shows a state in which the reinforcing bar structure 100 of the present embodiment is omitted in order to explain the synthetic slab structure 200 in an easy-to-understand manner.

In the reinforcing bar structure 100 of the first embodiment, as shown in FIGS. 1 to 3, for example, the upper surface of the corrugated steel plate 5 in which the mountain top surface portion 50 and the valley bottom surface portion 51 are alternately connected via the inclined surface portion 52 to form a corrugated cross section. It is installed in and used to hold the reinforcing wire mesh 6 at a predetermined height. The reinforcing wire mesh 6 is installed as a reinforcing member (for example, a structural material or a crack expansion preventing bar) of the concrete 7 placed on the upper surface of the corrugated steel plate 5.

As shown in FIGS. 3 and 4, the reinforcing bar structure 100 according to the first embodiment includes a support member 1, an upper chord member 2, a lower chord member 3, a reinforcing bar 4, and a horizontal bar member 8. There is. The support member 1, the upper chord member 2, the lower chord member 3, the reinforcing bar 4, and the horizontal bar member 8 are all made of wire rods (for example, reinforcing bars or the like).

As shown in FIGS. 2 to 4, the support member 1 is formed by crossing a pair of diagonal members 1a and 1b, and a plurality of support members 1 are arranged at intervals in one direction. It is integrally connected by the upper chord member 2 fixed to the upper part. Of the pair of diagonal members 1a and 1b, one of the diagonal members 1a is composed of two wires inclined in the same direction. The two wires are arranged at intervals of substantially the same dimensions as the outer diameter of the wires. Of the pair of diagonal members 1a and 1b, the other diagonal member 1b is composed of one wire rod and is arranged between the two opposite wire rods. The pair of diagonal members 1a and 1b are not joined at the intersections where they intersect, can be rotated around the intersections, and can be slid in the axial direction of the other diagonal members 1a or 1b. That is, the support member 1 is configured to be foldable as shown in FIG. 5 by rotating the support member 1 around the intersection of the pair of diagonal members 1a and 1b. Further, as shown in FIG. 6, the height of the upper chord member 2 can be appropriately adjusted by rotating the support member 1 around the intersection of the pair of diagonal members 1a and 1b, and the reinforcing wire mesh 6 can be provided. Can be held at the target height. The support member 1 may be composed of, for example, four or more wires. In this case, the pair of diagonal members 1a and 1b are arranged so that the wires intersect alternately.

As shown in FIGS. 3 and 4, the upper chord member 2 is arranged in a direction orthogonal to the diagonal members 1a and 1b, and is fixed to the upper portion of the diagonal members 1a and 1b. The lower chord member 3 is arranged in parallel with the upper chord member 2 and is fixed to the lower ends of the diagonal members 1a and 1b. The upper chord member 2 and the lower chord member 3 are conveyed to the construction site in a state of being fixed to the diagonal members 1a and 1b in advance at the manufacturing site. When the reinforcing bar structure 100 is used for the synthetic slab structure 200, the upper chord member 2 and the lower chord member 3 also function as crack expansion prevention bars for the placed concrete 7. Further, when the reinforcing bar structure 100 is used for the synthetic slab structure 200, the upper chord member 2 also functions as a reinforcing member of the cast concrete 7. Although not shown, the reinforcing bar structure 100 may be composed of only the upper chord member 2 without providing the lower chord member 3.

As shown in FIGS. 2 to 4, the reinforcing bar 4 is arranged in parallel with the upper chord member 2 and is fixed in the middle of the diagonal member 1b. The reinforcing bar 4 is also transported to the construction site in a state of being fixed to the diagonal member 1b in advance at the manufacturing site. When the reinforcing bar structure 100 is used for the synthetic slab structure 200, the reinforcing bar 4 also functions as a reinforcing member of the cast concrete 7. As shown in FIG. 5, the reinforcing bar 4 does not get in the way even when the support member 1 is folded. The reinforcing bar 4 may be provided in the middle of the diagonal member 1a, or may be provided at any position between the upper chord member 2 and the lower chord member 3. Further, the reinforcing bar 4 is not limited to one shown in the figure, and two or more reinforcing bars 4 may be provided.

As shown in FIGS. 2 to 4, the horizontal bar 8 is placed on the upper surface of the upper chord member 2 so as to cross the upper chord member 2. The horizontal reinforcing bar 8 also functions as a reinforcing member of the cast concrete 7 when the reinforcing bar structure 100 is used for the synthetic slab structure. At the construction site, a plurality of horizontal bar members 8 are arranged at a predetermined interval in the length direction of the upper chord member 2 after the support member 1 is rotated and expanded.

The horizontal bar 8 is provided with a downward first hook portion 8a that is fastened to the upper chord member 2. The first hook portion 8a is provided with a plurality of continuously provided sets at intervals in the length direction of the horizontal bar member 8. This is to hook the corresponding first hook portion 8a according to the opening size of the diagonal members 1a and 1b. The first hook portion 8a has a function of fixing the horizontal bar member 8 and also has a function of preventing the diagonal members 1a and 1b of the support member 1 from opening.

Further, the horizontal bar 8 is provided with an upward second hook portion 8b for hooking and fixing the reinforcing wire mesh 6 placed on the upper surface thereof. A plurality of second hook portions 8b are provided at predetermined intervals in the length direction of the horizontal bar member 8.

7 and 8 are enlarged views of a main part showing an example of the hinge mechanism part of the reinforcing bar structure according to the first embodiment of the present invention. As shown in FIGS. 7 and 8, in the reinforcing bar structure 100 of the first embodiment, the hinge mechanism portion 90 or the hinge mechanism portion 90 that adjusts the rotation of the diagonal members 1a and 1b at the intersection where the pair of diagonal members 1a and 1b meet. 91 may be provided. The hinge mechanism portion 90 shown in FIG. 7 has a configuration in which a hook portion is provided on one diagonal member 1b and the hook portion is hooked on the other diagonal member 1a. The range in which the diagonal members 1a and 1b are rotated can be adjusted by the shape of the hook portion. The hinge mechanism portion 90 may be provided with a hook portion on the diagonal member 1a, or may be provided with a hook portion on both the diagonal members 1a and 1b.

Further, the hinge mechanism portion 91 shown in FIG. 8 has a configuration in which an intermediate portion of one diagonal member 1a is formed in a spiral shape, and the other diagonal member 1b is passed through a hole formed by the spiral shape. The hinge mechanism portion 91 may have a spiral shape at the intermediate portion of the diagonal member 1b. The hinge mechanism portions 90 and 91 are, for example, not limited to the illustrated configuration and may have other forms as long as the rotation of the pair of diagonal members 1a and 1b can be adjusted.

As described above, the reinforcing bar structure 100 according to the first embodiment is formed by crossing a pair of diagonal members 1a and 1b, and a plurality of support members 1 arranged at intervals in one direction and their respective diagonals. It is provided with an upper chord member 2 which is fixed to the upper portions of the members 1a and 1b and integrally connects a plurality of support members 1. The support member 1 is configured to be foldable by rotating around the intersection of the pair of diagonal members 1a and 1b. Therefore, since the reinforcing bar structure 100 can be transported from the manufacturing site to the construction site by folding the support member 1, the transport efficiency can be improved. Further, after being transported to the construction site, the support member 1 can be easily assembled by simply unfolding the support member 1 from the folded state, and the reinforcing wire mesh 6 can be held at a predetermined height, so that the workability at the site is improved. It is also possible to reduce the construction cost.

Next, a synthetic slab structure 200 including the reinforcing bar structure 100 having the above configuration will be described with reference to FIGS. 1 to 8 with reference to FIGS. 9 and 10. FIG. 9 is a cross-sectional view of a synthetic slab structure including the reinforcing bar structure according to the first embodiment of the present invention. FIG. 10 is a cross-sectional view showing a corrugated steel plate having a synthetic slab structure provided with the reinforcing bar structure according to the first embodiment of the present invention.

As shown in FIGS. 1 and 9, the synthetic slab structure 200 includes a corrugated steel plate 5, a reinforcing bar structure 100 having the above configuration arranged on the upper surface of the corrugated steel plate 5, and reinforcement arranged on the upper surface of the reinforcing bar structure 100. The wire net 6 and the concrete 7 cast on the upper surface of the corrugated steel plate 5 are provided. In addition to this, a reinforcing member can be added to enhance functions such as strength and crack prevention.

As shown in FIG. 10, the corrugated steel plate 5 is composed of a mountaintop surface portion 50, a valley bottom surface portion 51 substantially parallel to the mountaintop surface portion 50, and an inclined surface portion 52 connecting the mountaintop surface portion 50 and the valley bottom surface portion 51. , A steel deck plate having a corrugated cross section in which a mountain top surface portion 50 and a valley bottom surface portion 51 are alternately connected. As an example, the corrugated steel plate 5 has a thickness of about 0.6 mm to 2.3 mm and a height of about 50 mm to 120 mm (mountain height).

The corrugated steel plate 5 is formed by arranging a plurality of single plates composed of two peak surface portions 50 and three valley bottom portions 51, and connecting the ends of adjacent plate single units. Engagement portions 5a and 5b for connecting adjacent corrugated steel plates 5 are formed at both ends of the valley bottom surface portion 51 in the groove width direction. The adjacent corrugated steel plates 5 are integrally joined by engaging the engaging portions 5a and 5b with each other. As an example, the engaging portions 5a and 5b are bent upward so as to stand up, and when one engaging portion 5a rests on the other engaging portion 5b, the upper portion is bent so as not to disengage. Is.

Each inclined surface portion 52 of the corrugated steel plate 5 is formed with a ridge portion 53 protruding in parallel with the valley bottom surface portion 51 at a position close to the valley bottom surface portion 51. The concave groove portion 54 is formed by the ridge portion 53 and the valley bottom portion 51. Further, a plurality of embossed 55s are formed on each inclined surface portion 52 of the corrugated steel plate 5. The emboss 55 is formed, for example, by pressing. The synthetic slab structure 200 can prevent the corrugated steel plate 5 and the concrete 7 from being displaced from each other by the concrete 7 cast on the upper surface of the corrugated steel plate 5 wrapping around the concave groove portion 54 and the embossed 55 and hardening. , The proof stress and deformation performance can be improved.

As shown in FIG. 9, the reinforcing bar structure 100 having the above configuration is arranged in each valley bottom surface portion 51 of the corrugated steel plate 5, and the lower end portion is fitted and fixed in the concave groove portion 54 of the corrugated steel plate 5. Specifically, as shown in FIG. 5, the reinforcing bar structure 100 is carried in a folded state from the manufacturing site, arranged on the valley bottom portion 51, and then the support member is as shown in FIG. 1 is rotated and expanded, and the lower chord member 3 is fitted and fixed in the concave groove portion 54 of the corrugated steel plate 5. When the lower chord member 3 is not provided, the lower ends of the diagonal members 1a and 1b are fitted into the concave groove portion 54 and fixed. Then, the horizontal bar member 8 is installed on the upper surface of the upper chord member 2 so as to intersect with the upper chord member 2, and the first hook portion 8a is fastened to each upper chord member 2 to restrict the rotation of the support member 1.

The reinforcing wire mesh 6 is, for example, a welded wire mesh formed by arranging reinforcing bars in a mesh shape and welding them, and is placed on the upper surface of the horizontal reinforcing bar 8 of the reinforcing bar structure 100. A part of the reinforcing bar is hooked to the second hook portion 8b provided on the horizontal reinforcing bar 8, and the reinforcing wire mesh 6 is fixed so as not to sink or rise when the concrete 7 is placed. The means for fixing the reinforcing wire net 6 to the upper surface of the horizontal bar 8 is not limited to the second hook portion 8b shown in the figure, and for example, the reinforcing wire net 6 may be fixed to the horizontal bar 8 by welding or the like, or another method. It may be a means. Further, the reinforcing wire mesh 6 is not limited to the welded wire mesh, and may be, for example, a deformed reinforcing bar or the like.

The concrete 7 is cast on the upper surface of the corrugated steel plate 5 in which the reinforcing bar structure 100 and the reinforcing wire mesh 6 are installed. The thickness of the concrete 7 depends on the use of the synthetic slab structure 200, but as an example, it is about 50 mm to 300 mm from the mountain top surface portion 50 of the corrugated steel plate 5.

As described above, in the synthetic slab structure 200 according to the first embodiment, the mountain top surface portion 50 and the valley bottom surface portion 51 are alternately connected to each other via the inclined surface portion 52 to form a corrugated cross section, and the corrugated steel plate 5 is formed on the upper surface of the corrugated steel plate 5. It includes an arranged reinforcing bar structure 100, a reinforcing wire mesh 6 arranged on the upper surface of the reinforcing bar structure 100, and concrete 7 cast on the upper surface of the corrugated steel plate 5. Therefore, in the synthetic slab structure 200, the reinforcing bar structure 100 can be installed on the upper surface of the corrugated steel plate 5 simply by rotating and expanding the support member 1 in the folded state, so that the installation work of the reinforcing bar structure 100 can be performed. It is easy and can contribute to shortening the construction period and reducing costs.

Further, in the corrugated steel plate 5, a concave groove portion 54 is formed by a ridge portion 53 formed on the inclined surface portion 52 and a valley bottom surface portion 51. The support member 1 of the reinforcing bar structure 100 is fixed by fitting the lower ends of the diagonal members 1a and 1b into the concave groove portion 54. Therefore, in the synthetic slab structure 200 of the first embodiment, the reinforcing bar structure 100 can be firmly positioned and fixed, and a pulling action is generated in the groove width direction of the corrugated steel plate 5 to cause the engaging portions 5a and 5b. The engaged state can be strengthened, and construction and management at the construction site can be facilitated.

Further, since the reinforcing bar structure 100 is arranged in parallel with the upper chord member 2 and includes the lower chord member 3 fixed to the lower ends of the diagonal members 1a and 1b, the lower chord member 3 is recessed in the corrugated steel plate 5. By fitting it into the groove portion 54, the reinforcing bar structure 100 can be firmly fixed. Further, since the lower chord member 3 functions as a reinforcing member, the strength of the synthetic slab structure 200 can be increased.

Further, since the reinforcing bar structure 100 is arranged in parallel with the upper chord member 2 and includes the reinforcing bar 4 fixed in the middle of the diagonal members 1a or 1b, the reinforcing bar structure 200 is enhanced by the reinforcing effect thereof. be able to.

Further, since the reinforcing bar structure 100 is provided with the horizontal reinforcing bar 8 placed on the upper surface of the upper chord member 2 so as to intersect with the upper chord member 2, the strength of the synthetic slab structure 200 can be increased by the reinforcing effect thereof. can. Further, since the horizontal bar 8 is provided with the first hook portion 8a to be fastened to the upper chord member 2, the horizontal bar 8 can be fixed to the upper chord member 2 by the first hook portion 8a, and the support member 1 The rotation of the diagonal members 1a and 1b can be restricted. Further, since the horizontal barb 8 is provided with a second hook portion 8b for hooking the reinforcing wire mesh 6 placed on the upper surface thereof, the reinforcing wire mesh 6 can be firmly positioned and fixed.

Further, since the synthetic slab structure 200 functions as both the support member 1 and the reinforcing member, the strength of the synthetic slab structure 200 can be increased. Since the reinforcing bar structure 100 is integrated by using many steel materials such as a support member 1, an upper chord member 2, a lower chord member 3, a reinforcing bar 4, and a horizontal reinforcing bar 8, the reinforcing effect of the reinforcing bar structure 100 is combined with the corrugated steel plate 5. It is possible to improve the synthetic effect with the concrete 7 and enhance the function of the synthetic slab.

Embodiment 2.
Next, the reinforcing bar structure 101 according to the second embodiment of the present invention will be described with reference to FIGS. 11 to 14. FIG. 11 is a perspective view showing a state in which the reinforcing bar structure according to the second embodiment of the present invention is installed on a corrugated steel plate. FIG. 12 is a front view showing a state in which the reinforcing bar structure according to the second embodiment of the present invention is installed on a corrugated steel plate. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

As shown in FIGS. 11 and 12, the reinforcing bar structure 101 according to the second embodiment also includes a support member 1, an upper chord member 2, a reinforcing bar 4, and a horizontal reinforcing bar 8. The support member 1, the upper chord member 2, the reinforcing bar 4, and the horizontal bar 8 are all made of wire rods (for example, reinforcing bars or the like).

As shown in FIG. 11, the support member 1 has a structure formed by crossing a pair of slanted lumbers 1a and 1b in which truss-shaped wire rods are slanted. The pair of diagonal members 1a and 1b are not joined at the intersections where they intersect, can be rotated around the intersections, and can be slid in the axial direction of the other diagonal members 1a or 1b. That is, the support member 1 is configured to be foldable as shown in FIG. 5, for example, by rotating the support member 1 around the intersection of the pair of diagonal members 1a and 1b. Further, by rotating the support member 1 around the intersection of the pair of diagonal members 1a and 1b, the height of the upper chord member 2 can be appropriately adjusted, for example, as shown in FIG. 6, and the reinforcing wire mesh 6 can be adjusted. Can be held at a predetermined height.

As shown in FIGS. 11 and 12, the upper chord member 2 is arranged in a direction orthogonal to the diagonal members 1a and 1b, and is fixed to the upper portion of the diagonal members 1a and 1b. The upper chord member 2 is transported to the construction site in a state of being fixed to the diagonal members 1a and 1b in advance at the manufacturing site. When the reinforcing bar structure 101 is used for the synthetic slab structure 201, the upper chord member 2 also functions as a reinforcing member of the cast concrete 7. As shown in FIGS. 11 and 12, in the reinforcing bar structure 101 of the second embodiment, the lower chord member is not provided at the lower end portion of the support member 1, but the lower chord member described in the first embodiment is provided. May be good. The lower chord member is arranged in parallel with the upper chord member 2 and is fixed to the lower ends of the diagonal members 1a and 1b.

As shown in FIGS. 11 and 12, the reinforcing bar 4 is arranged in parallel with the upper chord member 2 and is fixed in the middle of the diagonal member 1b. The reinforcing bar 4 is also transported to the construction site in a state of being fixed to the diagonal member 1b in advance at the manufacturing site. When the reinforcing bar structure 101 is used for the synthetic slab structure 201, the reinforcing bar 4 functions as a reinforcing member of the cast concrete 7. The reinforcing bar 4 does not get in the way even when the support member 1 is folded. The reinforcing bar 4 may be provided in the middle of the diagonal member 1a. Further, the reinforcing bar 4 is not limited to one shown in the figure, and two or more reinforcing bars 4 may be provided.

As shown in FIGS. 11 and 12, the horizontal bar 8 is placed on the upper surface of the upper chord member 2 orthogonally to the upper chord member 2, and is used to connect the upper ends of the pair of diagonal members 1a and 1b. It is provided. That is, the horizontal bar 8 functions as an opening stopper for the diagonal members 1a and 1b. The horizontal reinforcing bar 8 also functions as a reinforcing member of the cast concrete 7 when the reinforcing bar structure 101 is used for the synthetic slab structure 201. A downward first hook portion 8a is formed at both ends of the horizontal bar member 8, and the first hook portion 8a is fastened to the diagonal members 1a and 1b, respectively. At the construction site, a plurality of horizontal bar members 8 are arranged at a predetermined interval in the length direction of the upper chord member 2 after the support member 1 is rotated and expanded.

Further, the horizontal bar 8 is provided with an upward second hook portion 8b for hooking and fixing the reinforcing wire mesh 6 placed on the upper surface thereof. A plurality of second hook portions 8b are provided at predetermined intervals in the length direction of the horizontal bar member 8.

As shown in FIGS. 4 and 5, the reinforcing bar structure 101 of the second embodiment also has a hinge mechanism at the intersection where the pair of diagonal members 1a and 1b, like the reinforcing bar structure 101 of the first embodiment. A unit 90 or 91 or the like may be provided.

As described above, the reinforcing bar structure 101 according to the second embodiment has a support member 1 formed by crossing a pair of diagonal members 1a and 1b in which a truss-shaped wire is inclined, and the respective diagonal members 1a and 1b. It is provided with an upper chord member 2 fixed to the upper part of 1b. The support member 1 is configured to be foldable by rotating around the intersection of the pair of diagonal members 1a and 1b. Therefore, since the reinforcing bar structure 101 can be transported from the manufacturing site to the construction site by folding the support member 1, the transport efficiency can be improved. Further, after being transported to the construction site, the support member 1 can be easily assembled by simply unfolding the support member 1 from the folded state, and the reinforcing wire mesh 6 can be held at a predetermined height, so that the workability at the site is improved. It is also possible to reduce the construction cost.

Next, a synthetic slab structure 201 including the reinforcing bar structure 101 having the above configuration will be described with reference to FIGS. 13 and 14. FIG. 13 is a cross-sectional view of a synthetic slab structure including the reinforcing bar structure according to the second embodiment of the present invention. FIG. 14 is an explanatory diagram showing a procedure for installing a reinforcing bar structure according to a second embodiment of the present invention on a corrugated steel plate.

As shown in FIG. 13, the synthetic slab structure 201 in the second embodiment is composed of a corrugated steel plate 5, a reinforcing bar structure 101 having the above configuration, a reinforcing wire net 6 mounted on the reinforcing bar structure 101, and a corrugated steel plate 5. It is provided with a concrete 7 cast on the upper surface. The corrugated steel plate 5, the reinforcing wire mesh 6, and the concrete 7 have the same configuration as that described in the first embodiment. In addition to this, a reinforcing member can be added to enhance functions such as strength and crack prevention.

As shown in FIG. 13, the reinforcing bar structure 101 having the above configuration is arranged in each valley bottom surface portion 51 of the corrugated steel plate 5, and the lower end portion is fitted and fixed in the concave groove portion 54 of the corrugated steel plate 5. Specifically, the reinforcing bar structure 101 is carried from the manufacturing site in a folded state, arranged on the valley bottom portion 51 as shown in FIG. 14, and then the support member 1 is rotated and expanded. The lower chord member 3 is fitted and fixed in the concave groove portion 54 of the corrugated steel plate 5. Then, the horizontal bar member 8 is placed on the upper surface of the upper chord member 2 so as to cross the upper chord member 2, and the first hook portions 8a at both ends are fastened to the upper chord members 2 to regulate the rotation of the support member 1.

As described above, also in the synthetic slab structure 201 provided with the reinforcing bar structure 101 according to the second embodiment, the corrugated steel plate 5 in which the mountain top surface portion 50 and the valley bottom surface portion 51 are alternately connected via the inclined surface portion 52 to form a corrugated cross section. A reinforcing bar structure 101 arranged on the upper surface of the corrugated steel plate 5, a reinforcing wire net 6 arranged on the upper surface of the reinforcing bar structure 101, and concrete 7 cast on the corrugated steel plate 5 are provided. Therefore, in the synthetic slab structure 201, the reinforcing bar structure 101 can be installed only by rotating and expanding the support member 1 in the folded state, so that the installation work of the reinforcing bar structure 101 is easy, and the construction period is shortened and the cost is reduced. It can contribute to the reduction.

Further, in the corrugated steel plate 5, a concave groove portion 54 is formed by a ridge portion 53 formed on the inclined surface portion 52 and a valley bottom surface portion 51. The support member 1 of the reinforcing bar structure 101 is fixed by fitting the lower ends of the diagonal members 1a and 1b into the concave groove portion 54. Therefore, in the synthetic slab structure 201 according to the second embodiment, the reinforcing bar structure 101 can be firmly positioned and fixed, and a pulling action is generated in the groove width direction of the corrugated steel plate 5 to cause the engaging portions 5a and 5b. The engaged state can be strengthened, and construction and management at the construction site can be facilitated.

Further, since the reinforcing bar structure 101 is arranged in parallel with the upper chord member 2 and includes the reinforcing bar 4 fixed in the middle of the diagonal members 1a or 1b, the reinforcing bar structure 201 enhances the strength of the synthetic slab structure 201 by the reinforcing effect. be able to.

Further, since the reinforcing bar structure 101 is provided with the horizontal reinforcing bar 8 placed on the upper surface of the upper chord member 2 so as to intersect with the upper chord member 2, the strength of the synthetic slab structure 201 can be increased by the reinforcing effect thereof. can. Further, since the horizontal bar 8 is provided with the first hook portion 8a to be fastened to the upper chord member 2, the horizontal bar 8 can be fixed to the upper chord member 2 by the first hook portion 8a, and the support member 1 The rotation of the diagonal members 1a and 1b can be restricted. Further, since the horizontal barb 8 is provided with a second hook portion 8b for hooking the reinforcing wire mesh 6 placed on the upper surface thereof, the reinforcing wire mesh 6 can be firmly positioned and fixed.

Further, since the synthetic slab structure 201 functions as both the support member 1 and the reinforcing member, the strength of the synthetic slab structure 201 can be increased. Since the reinforcing bar structure 101 is integrated by using many steel materials such as the support member 1, the upper chord member 2, the reinforcing bar 4, and the horizontal reinforcing bar 8, the corrugated steel plate 5 and the concrete 7 are combined by the reinforcing effect. It is possible to improve the synthetic effect and enhance the function of the synthetic slab.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the configuration of the above-described embodiments. For example, the dimensions and shape of the corrugated steel plate 5, and the shapes of the engaging portions 5a and 5b are not limited to this, and the design can be appropriately changed according to the site area, the installation interval of the support beams, the strength required for the structure, and the like. .. Further, the reinforcing bar structures 100 and 101 are not limited to the case where they are installed on the corrugated steel plate 5 described above, and can be used for other purposes. In short, the present invention includes a range of design changes and application variations normally performed by those skilled in the art, to the extent that they do not deviate from the technical idea.

1 Support member, 1a, 1b diagonal material, 2 Upper chord material, 3 Lower chord material, 4 Reinforcing bar, 5 Corrugated steel plate, 5a, 5b engaging part, 6 Reinforcing wire mesh, 7 Concrete, 8 Horizontal bar material, 8a 1st hook part, 8b 2nd hook part, 50 mountain top surface part, 51 valley bottom part, 52 inclined surface part, 53 ridge part, 54 concave groove part, 55 embossing, 90, 91 hinge mechanism part, 100, 101 reinforcing bar structure, 200, 201 synthetic slab structure ..

Claims (9)

Support members formed by crossing a pair of diagonal members and arranged at intervals in one direction, and
It is provided with an upper chord member which is fixed to the upper part of each of the diagonal members and integrally connects the plurality of the support members.
Of the pair of diagonal members, one diagonal member is composed of two or more wires, the other diagonal member is composed of one or more wires, and the other diagonal member is between the wires of the one diagonal member. The wire of the material is arranged,
The support member is a reinforcing bar structure that is freely foldable by rotating around the intersection of the pair of diagonal members. A support member formed by crossing a pair of slanted members of a truss-shaped wire, and
With an upper chord material fixed to the top of each of the diagonal members,
The support member is a reinforcing bar structure that is freely foldable by rotating around the intersection of the pair of diagonal members. The reinforcing bar structure according to claim 1 or 2, further comprising a lower chord member arranged in parallel with the upper chord member and fixed to the lower end portion of each of the diagonal members. The reinforcing bar structure according to any one of claims 1 to 3, further comprising a reinforcing bar arranged in parallel with the upper chord member and fixed in the middle of the diagonal member. On the upper surface of the upper chord material, a horizontal bar member placed so as to intersect with the upper chord material is further provided.
The reinforcing bar structure according to any one of claims 1 to 4, wherein the horizontal reinforcing bar is provided with a first hook portion to be fastened to the upper chord member. The reinforcing bar structure according to claim 5, wherein the horizontal reinforcing bar is provided with a second hook portion for hooking a reinforcing wire mesh placed on the upper surface thereof. The reinforcing bar structure according to any one of claims 1 to 6, wherein the pair of diagonal members is provided with a hinge mechanism portion for adjusting rotation. A corrugated steel plate in which the top surface of the mountain and the bottom surface of the valley are alternately connected via the inclined surface to form a corrugated cross section.
The reinforcing bar structure according to any one of claims 1 to 7 arranged on the valley bottom portion of the corrugated steel sheet and the reinforcing bar structure.
Reinforcing wire mesh arranged on the upper surface of the reinforcing bar structure,
A synthetic slab structure comprising concrete cast on the upper surface of the corrugated steel plate. The corrugated steel sheet has a concave groove portion formed by a ridge portion formed on the inclined surface portion and a valley bottom portion thereof.
The synthetic slab structure according to claim 8, wherein the support member of the reinforcing bar structure is fixed by fitting the lower end portion of the diagonal member into the concave groove portion.

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