JP2004176540A - Void made of perforated plate with reinforcement mesh bar and cap for closing void end part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase an adhesion property to concrete and concrete reinforcing performance as well as a slab construction property such as transportation and arrangement to form a hollow part, that is, to improve the reliability of a slab construction. <P>SOLUTION: A void 20a made of a perforated plate with a reinforcing mesh bar forms a perforated plate 10a with the reinforcing mesh bar in which the reinforcing mesh bar 8 is combined with the perforated plate 5 forming a number of small holes 2 or 3 by welding and it is bent by a plurality of bending lines 0-0 to constitute the whole void like a downward channel by both side fringes 11b in which an upper face 11a and both ends of the upper face are brought into contact continuously and downward. Or, lower fringes of both side fringes are bent toward the outside to bring a short lower face 11d into contact continuously. Or, the lower face 11d provided continuously between both side fringes is provided to constitute the whole in a cylindrical shape. A closing face 30 formed by corresponding to an end shape of the void made of the perforated plate and a fitting part 31 around one side of the closing face are provided. <P>COPYRIGHT: (C)2004,JPO

Description

    The present invention relates to a reinforcing mesh bar which is buried in a floor slab or the like constructed in various buildings, forms a hollow portion in the slab, increases the thickness of the slab, that is, increases the thickness of the slab, and uses it for piping or the like. The present invention relates to a perforated plate-made void and a cap for closing a void end.

  The conventional void used in the floor slab construction section constructed in various buildings, forming a hollow part in the slab and forming the slab in a large thickness, that is, forming the slab, and using it for piping and the like, A band-shaped metal plate cylindrical void formed by winding a band-shaped metal plate in a spiral shape, and a styrene-made cylindrical void formed into a cylindrical shape by a foamed resin have been developed and used.

    The above-mentioned band-shaped metal plate cylindrical void is formed into a relatively heavy material and takes time for transportation and installation work, and the band-shaped metal plate is relatively bonded to concrete at a rate that increases the weight of the slab. There was a defect that it was inferior in properties and did not contribute particularly to the increase in concrete reinforcement.

    In addition, the above-mentioned styrene-made cylindrical voids have been reduced in weight and are convenient for transportation and installation work, but they do not contribute particularly to reinforcement of the hollow portion formed inside the slab, and the strength of cast concrete increases. However, there was a problem that the area of formation of the space portion was narrowed without special contribution, and the utility value (wiring, piping, etc.) in the hollow portion was impaired.

"Design and Construction of Precast Reinforced Concrete Structure" published by The Architectural Institute of Japan October 25, 1986, 1st edition

  The present invention has been developed for solving the above-mentioned problems in the above-mentioned band-shaped metal plate tubular void and styrene-made tubular void, and the object is to reduce the weight and improve the transportation and workability. Another object of the present invention is to provide a perforated plate void with reinforcing mesh streaks and a cap for closing the end of a void, which have improved slab workability and reliability by enhancing concrete adhesion and reinforcement as well as workability.

Means to solve the problem

  Claim 1 of the present invention is to form a perforated plate with a reinforcing mesh streak formed by welding a reinforcing plate to a perforated plate in which a number of small holes are formed in a thin plate. The hole is made of a perforated plate with a reinforcing mesh streak that is formed in a downward groove shape as a whole by an upper surface portion bent by a plurality of folding curves and both side edges connected downward from both ends of the upper surface portion. Having.

  According to a second aspect of the present invention, in the perforated plate with the reinforcing mesh streaks, the voids made of the perforated plate with the reinforcing mesh streaks are formed in a generally downward groove shape by the upper surface portion and both side edges. In addition, it is characterized in that the lower edges of both side edges are bent outward to connect the short lower surfaces.

  According to a third aspect of the present invention, in the void made of a perforated plate with a reinforcing mesh streak, a lower surface portion continuously provided between the lower end portions of the both side edge portions is provided so as to be entirely cylindrical. Has features.

    According to a fourth aspect of the present invention, in the void made of the perforated plate with the reinforcing mesh streaks, a closed surface formed corresponding to the end shape of the perforated plate and a periphery of one side of the closed surface are connected. The present invention is characterized in that a cap for closing a void end is provided, which is provided with a fitting portion provided, and is configured to be fitted to the end of the void made of the perforated plate and closed.

The invention's effect

  A void made of a perforated plate with a reinforcing mesh streak according to the present invention (Claim 1) is a perforated plate having the above-described configuration and having a number of small holes 2 formed thereon, and a reinforcing mesh stirrer is welded to this perforated plate. As a perforated plate with reinforcing mesh reinforced by bending it, it is bent by multiple bending curves to form a groove shape, making it relatively lightweight and reinforced, making it possible to work with concrete and slab workability such as transportation and placement. It improves the adhesiveness of concrete and the reinforcement performance of concrete, and improves the reliability of the formation of the hollow part, that is, the slab construction.

  The void made of a perforated plate with reinforcing mesh streaks according to the present invention (claim 2) has the above-described configuration, and has a configuration in which a lower surface portion continuously provided between both side edges is provided, thereby stabilizing the arrangement. In addition, the slab workability as described above, as well as the adhesion to concrete and the concrete reinforcement performance are enhanced, and the formation of the hollow portion, that is, the reliability of the slab work is enhanced.

  A void made of a perforated plate with a reinforcing mesh streak according to the present invention (Claim 3) has the above-described configuration, and is formed in a cylindrical shape by continuously connecting lower surfaces continuously provided between lower ends of both side edges. With this configuration, the slab workability as well as the adhesion to concrete and the concrete reinforcement performance are enhanced, and the formation of the hollow portion, that is, the reliability of the slab work is enhanced.

  The void end closing cap of the present invention (Claim 4) is configured as described above, is easily fitted to the end of each of the perforated plate voids, and can be closed. Sex and reliability have been effectively improved.

  In each embodiment of the present invention, a perforated plate 10 with reinforcing mesh streaks (first embodiment) or 15 (second embodiment) is provided by welding a reinforcing mesh bar 8 to the perforated plate 5 shown in FIG. Manufactured by That is, the upper surface portion 11a formed by bending the perforated plate 10 or 15 with the reinforcing mesh streaks along a plurality of bending curves 0-0, and both side portions bent downward from both ends of the upper surface portion. Void 10a made of a perforated plate with reinforcing mesh streaks (1st Embodiment-Claim 1), or perforated plate with reinforcing mesh streaks, formed in downward grooved shapes 11a-11b, 11b composed of 11b, 11b. A void 11b made of a perforated plate with reinforcing mesh streaks formed by connecting short lower surfaces 11c formed by bending the lower edges of both sides 11b, 11b outwardly in the voids made in the second embodiment. Alternatively, a perforated plate-made void 11c (see FIG. 4) is provided with a lower surface 11d continuously provided between the lower ends of the side edges 11b, 11b to form a cylindrical shape 11a-11b, 11b-11d as a whole. Third Example-Claim 3) Further, in the above-mentioned void made of a perforated plate with a reinforcing mesh streak, a closing surface portion 30 formed corresponding to the end shape of the void made of a perforated plate with a reinforcing mesh streak and the closure. Void end closing caps 30 and 31 which are provided with a fitting portion 31 provided continuously around one side of the surface portion and which are fitted to and closed at the ends of the perforated plate voids. It has become.

  As shown in FIG. 3, a basic example of the perforated plate 10 with the reinforcing mesh is formed by forming a large number of slits in a relatively thin iron plate, that is, various kinds of metal plates 1, and pulling the entire surface to form a large number of small holes 2. Is formed on a perforated plate 5 made of an expanded metal plate or the like, and a plurality of horizontal streaks 6 and vertical streaks 7 preferably made of deformed reinforcing bars and the like are arranged over the entire area at appropriate intervals based on this. These intersections are welded 9 and the entire surface of the perforated plate 5 is welded 9 to form a perforated plate 10 with reinforcing mesh streaks 8 attached as reinforcing mesh streaks 8. The reinforcing mesh streaks 8 are adhered (welded 9) over the entire area of the perforated plate 5 to form a perforated plate with the reinforcing mesh streaks 8 in which the perforated plate 5 is effectively reinforced. In the illustrated example, the reinforcing mesh-like streaks 8 have the horizontal streaks 6 and the vertical streaks 7 attached to only one surface of the perforated plate 5. Alternatively, they can be separately provided on both sides. Moreover, it can also be manufactured by the perforated plate 15 with the reinforcing mesh streaks shown in FIG. In addition, the small holes 2 are formed as small holes as to cause clogging to be appropriately caused by aggregates mixed in the concrete to be poured and to effectively prevent the outflow of concrete milk.

  The perforated plate 15 with the reinforcing mesh streaks (modification) is different from the first embodiment in that a plurality of rows of small holes 3 are formed in the same thin iron plate, that is, a metal plate 4, as shown in FIG. It is formed on a perforated plate 5 formed by punching. Further, the same horizontal stripes 6 and / or vertical stripes 7 as described above are separately arranged on both sides of the perforated plate 5, and the intersections thereof are welded 9 together with the perforated plate 5 to form reinforcing mesh streaks 8. The perforated plate 15 is also configured. Moreover, it can also be manufactured by the perforated plate 15 with the reinforcing mesh streaks shown in FIG. The small hole 3 is formed in a small hole that is apt to cause clogging moderately and blocks outflow of concrete milk as described above.

First embodiment

  In the first embodiment of the present invention, as shown in FIG. 3, a thin plate 1 having a plurality of small holes 2 formed therein is used as a base. They are arranged and their intersections are welded 9 to form reinforcing mesh streaks 8. The reinforcing mesh streaks 8 are also welded 9 to the perforated plate 5 to form a perforated plate 10 with the reinforcing mesh streaks 8 attached by welding 9 to the perforated plate 5. Then, as shown in FIG. 2A, the perforated plate 10 with reinforcing bars is bent along a plurality of folding curves 0-0, and downward from both ends of the upper surface portion composed of the upper surface portion 11a and the side edges 11b, 11b. The downwardly extending grooves 11a-11b,. 11ba. In the illustrated example of the illustrated void 20a made of a perforated plate with a reinforcing mesh streak, the reinforcing mesh streaks 8 are provided on the inner surface side of the void 20a. However, the structure may be bent to the opposite surface side if necessary. It is possible.

Second embodiment

  The second embodiment of the present invention is different from the first embodiment in that, as shown in FIG. 1, in the void made of a perforated plate with reinforcing mesh streaks, the upper surface 11a and the side edges 11b, 11b are provided. Perforated plate with reinforcing mesh streaks, which are formed in a downward groove shape 11a-11b, 11b as a whole, and which have short side portions 11c, 11c connected by bending lower edges of both side edges 11b, 11b outward. The void 20b is formed.

Third embodiment

  Compared to the first and second embodiments, as shown in FIG. 2B, in the void made of the perforated plate with the reinforcing mesh streaks, a lower surface portion continuously provided between the side edge portions 11b, 11b. Also provided is a void 20c made of a perforated plate with a reinforcing mesh streak provided with 11d and formed entirely in a cylindrical shape 11a-11b-11d-11b.

Fourth embodiment

  As shown in FIG. 6, the embodiment of the cap for closing the end of the void was formed so as to correspond to the end shape of the void 20a, 20b or 20c made of the perforated plate in the above-mentioned void made of the perforated plate with reinforcing mesh streaks. It is provided with a closing surface portion (30) and a fitting portion (31) provided continuously around one side of the closing surface portion, wherein the fitting portion (31) is fitted to the end of the perforated plate void and closed. And a cap for closing the void end. The cap for closing the void end is preferably formed of a perforated plate with reinforcing mesh streaks as shown in FIGS. 3 and 4, and can also be made of various synthetic resins, metals or cardboards as required.

  When the floor slab is constructed by the perforated plate voids 20b with the reinforcing mesh streaks, first, as shown in FIG. 6A, the floor slab is appropriately placed on the upper side of the deck plate installed between the columns standing in various buildings. Are arranged vertically and horizontally on the upper side of the spacer, and a plurality of lattice bars 40 composed of a wavy line 41 and an upper chord bar 42 and a lower chord bar 430 preferably made of deformed reinforcing steel are attached to the lower beam main bar. After the concrete C1 is temporarily placed on the upper side of the formwork to the lower part of the lattice streak 40 and appropriately cured, as shown in FIGS. 6B and 6C, a plurality of reinforcing mesh studs are provided. The end of the perforated plate void 20b is closed by fitting a void end closing cap 30 or 31. The perforated plate void 20b with the reinforcing mesh streaks is inserted between each lattice 40. And placed on the primary cast concrete C1 and the upper chords of each lattice 40 are arranged vertically and horizontally. Then, on the primary cast concrete C1, the secondary chords are extended from between each lattice 40 to above the upper beam main reinforcement. When the cast concrete C2 is cast and cured, the hollow portions S are effectively formed inside the perforated plate voids 20b with the reinforcing mesh streaks, and are effectively constructed as floor slabs.

  Also, when a slab is constructed using the perforated plate void 20a with reinforcing mesh streaks (first embodiment), it is constructed in substantially the same manner as the slab construction described above. In the case where the void 20c made of a perforated plate with a reinforcing mesh streak (the third embodiment) is used, the concrete C1 for the primary casting described above becomes unnecessary.

  In the slab construction described above, the slab is formed to be relatively light in weight, is convenient for transportation, and is easily and accurately arranged, so that the reliability of construction is enhanced. In addition, a large number of small holes 2 or 3 provided in each of the perforated plate voids with reinforcing mesh streaks tend to be clogged with the mixed concrete in the poured concrete, and the outflow of concrete milk is effectively prevented. As a result, the intermediate portion S is effectively formed therein, and the concrete tends to adhere to the small holes 2 or 3 so that the concrete adheres effectively to the voids formed by the perforated plate with the reinforcing mesh. It has been raised to. Furthermore, the concrete is effectively reinforced by the reinforcing mesh streaks 8, thereby improving the slab construction reliability.

  INDUSTRIAL APPLICABILITY The present invention is utilized when forming a hollow portion inside a slab construction of various buildings, etc., and increasing the thickness of the slab and strengthening the slab or forming a hollow portion inside and forming a piping inside the hollow portion. It is also used when arranging etc.

  End view () and side view thereof showing a (second embodiment) of a perforated metal plate with a reinforcing mesh bar manufactured by the perforated metal plate with a reinforcing mesh bar of the present invention (first embodiment). (B)   Front view (A) showing a first embodiment of an end closing cap for closing a void end surface, and front view (B) showing a third embodiment thereof.   FIG. 2 is a plan view showing a first embodiment of a perforated metal plate with reinforcing mesh streaks;   FIG. 3 is a plan view showing a second embodiment of a perforated metal plate with reinforcing mesh streaks.   A perspective view (A) showing a first embodiment of an end closing cap for closing a void end face portion, and a perspective view (B) showing a second embodiment thereof.   It is the side view (A) which shows the 1st process which shows one Example of a slab construction method, the side view which shows a 2nd process (B), and the side view which shows a 3rd process (C).

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Thin iron plate 2 Small hole 5 Perforated thin iron plate 8 Reinforcing mesh streaks 9 Welding 10 Perforated metal plate 10a with reinforcing mesh streaks Upper surface portion 10b Side surface portion 10c Projecting lower surface portions 20a, 20b, 20c Perforated holes with reinforcing mesh streaks Metal plate void

Claims (4)

  A perforated plate with a large number of small holes formed in a thin plate is welded with a reinforcing mesh bar to form a perforated plate with a reinforcing mesh bar, and the perforated plate with a reinforcing mesh bar is bent at a plurality of bending curves. A perforated plate void with reinforcing mesh streaks, characterized in that the upper surface and the side edges connected downward from both ends of the upper surface are formed in a generally downward groove shape.   2. The void made of a perforated plate with reinforcing mesh streaks according to claim 1, wherein the upper surface and both side edges are formed in a downward groove shape as a whole, and the lower edges of both side edges are bent outward to be short. A void made of a perforated plate with reinforcing mesh streaks, characterized in that the lower surface is connected.     2. A perforated plate with a reinforcing mesh streak according to claim 1, wherein the void is made of a perforated plate with a reinforcing mesh streak, wherein a lower surface is provided continuously between the two side edges to form an overall cylindrical shape. Made void.     4. The closed-plate-shaped void having a reinforcing mesh streak according to claim 1, 2 or 3, and a closed-surface portion formed corresponding to an end shape of the perforated-plate void and one of the closed-surface portions. And a fitting portion continuously provided corresponding to the periphery of the side, and a cap for closing a void end portion, wherein the cap is closed by fitting to the end portion of the perforated plate void. .

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