Reinforced truss deck plate, deck plate assembly, and method for constructing reinforced truss deck plate

Abstract

To provide a reinforced truss deck plate that allows a second reinforcing truss for reinforcement to be easily installed onto a deck plate body equipped with a first reinforcing truss.SOLUTION: A reinforced truss deck plate 1A of the present invention comprises a deck plate body 4 and a reinforcing member 5. The deck plate body 4 comprises a base plate 6 and a first reinforcing truss 7. The reinforcing member 5 comprises a second reinforcing truss 20 for reinforcement and a support member 21. The support member 21 comprises a valley portion 25 that supports the second reinforcing truss 20 from below, positioning it between adjacent first reinforcing trusses 7, 7 such that the second reinforcing truss 20 is aligned in height with the first reinforcing truss 7.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a deck plate with a reinforcing bar truss, a deck plate group including the deck plate with the reinforcing bar truss, and a method for constructing a deck plate with a reinforcing bar truss. [Background technology]

[0002] Conventionally, a deck plate 100 with reinforcing bar trusses, as shown in FIG. 8, has been used to construct slabs (see, for example, Patent Document 1). The deck plate 100 with reinforcing bar trusses (hereinafter referred to as the deck plate 100) comprises a base plate 101, a plurality of reinforcing bar trusses 102, and a plurality of hanger members 103. The plurality of reinforcing bar trusses 102 are arranged on the base plate 101 at intervals in the width direction of the base plate 101 (the left-right direction in FIG. 8). Each reinforcing bar truss 102 comprises upper end reinforcement bars 104 and lower end reinforcement bars 105 extending in the length direction of the base plate 101 (the front-rear direction in FIG. 8), and corrugated lattice reinforcement bars 106 connecting the upper end reinforcement bars 104 and the lower end reinforcement bars 105. The plurality of hanger members 103 are arranged at intervals in the length direction of the base plate 101 (the front-rear direction in FIG. 8). Each hanger member 103 has mountain-shaped peaks 107 and connection portions 108 extending from the lower ends of the peaks 107 along the upper surface of the base plate 101, which are alternately formed in the width direction of the base plate 101 (the left-right direction in FIG. 8), and upper end reinforcement 104 is fixed to the upper ends of the peaks 107. When constructing a slab, concrete is poured on the base plate 101 so that the multiple rebar trusses 102 and multiple hanger members 103 are embedded in the concrete.

[0003] If there are areas in the slab that require reinforcement (such as near an opening), reinforcing steel bars are added to the deck plate 100 before the concrete is poured. Figure 9 shows a conventional method of adding upper end reinforcement 200 and lower end reinforcement 201 as the reinforcing steel bars.

[0004] In the method of Figure 9, the deck plate 100 is installed so that the base plate 101 is supported by a support surface (not shown), such as the upper surface of a beam (as shown in Figure 9(A)), and then the reinforcing upper end bars 200 and lower end bars 201 are placed on the connection portion 108 so that they extend in the length direction of the base plate 101 (from front to back in Figure 9), as shown in Figure 9(B).

[0005] Next, as shown in Figure 9(C), the first distribution reinforcement 202 is placed on the existing upper end reinforcement 104 and tied to the upper end reinforcement 104 so that the first distribution reinforcement 202 extends in the width direction of the substrate 101 (left and right direction in Figure 9).

[0006] Next, as shown in FIG. 9(D), the reinforcing upper end reinforcement 200 is lifted and tied to the first distribution reinforcement 202.

[0007] Next, as shown in Figure 9(E), the second distribution reinforcement 203 is placed on the existing lower end reinforcement 105 and tied to the lower end reinforcement 105 so that the second distribution reinforcement 203 extends in the width direction of the substrate 101 (left and right direction in Figure 9).

[0008] Next, as shown in FIG. 9(F), the reinforcing bottom end bars 201 are lifted and tied to the second distribution bars 203.

[0009] By carrying out the above steps, the deck plate 100 is provided with additional reinforcing upper end bars 200 and lower end bars 201 (as shown in FIG. 9(F)). [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-246922 Summary of the Invention [Problem to be solved by the invention]

[0011] According to the conventional installation method described above, the five steps shown in Figures 9(B) to 9(F) are required to install the reinforcing upper end reinforcement 200 and lower end reinforcement 201 on the deck plate 100, which is very time-consuming.

[0012] The present invention has been made in light of the above-mentioned problems, and an object of the present invention is to provide a deck plate with reinforcing bar trusses that allows a second reinforcing bar truss to be installed with simple work on a deck plate main body that has a first reinforcing bar truss, and a method for constructing such a deck plate with reinforcing bar trusses.

[0013] Another object of the present invention is to provide a deck plate group including the above-mentioned deck plate with reinforcing bar trusses, which can reinforce the vicinity of an opening. [Means for solving the problem]

[0014] The steel truss deck plate of the present invention is The deck plate body, a reinforcing member; The deck plate body includes a base plate and a plurality of first reinforcing bar trusses arranged at intervals in a width direction of the base plate, The reinforcing member includes a plurality of second reinforcing bar trusses arranged at intervals in the width direction for reinforcing, and a plurality of support members arranged at intervals in the length direction of the base plate, The support material has a positioning valley portion that supports the second reinforcing bar truss from below so that the second reinforcing bar truss is positioned between the adjacent first reinforcing bar truss at the same height as the first reinforcing bar truss.

[0015] According to the above mentioned deck plate with rebar truss, With the deck plate body installed so that the base plate is supported on the installation surface, the second reinforcing bar truss can be installed on the deck plate body equipped with the first reinforcing bar truss through a simple process of carrying out a first step of arranging multiple support materials at intervals along the length of the base plate, and a second step of placing each second reinforcing bar truss on the valley portion so that the valley portion supports the second reinforcing bar truss from below.

[0016] The deck plate group according to the present invention is a deck plate group including the above-mentioned deck plate with reinforcing bar trusses, and the deck plate with reinforcing bar trusses is provided near an opening.

[0017] According to the above-mentioned deck plate group, the deck plate with reinforcing steel trusses, which is provided with the second reinforcing steel truss in addition to the first reinforcing steel truss, is provided near the opening, thereby reinforcing the area near the opening.

[0018] The method for constructing a deck plate with a rebar truss according to the present invention comprises the steps of: a first step of arranging a plurality of support members at intervals in the longitudinal direction of the base plate with the deck plate body installed so that the base plate is supported on an installation surface; and a second step of placing each of the second reinforcing bar trusses on the valley portion so that each of the second reinforcing bar trusses is supported by the valley portion from below.

[0019] According to the above method for constructing a deck plate with a rebar truss, By carrying out the above-described first and second steps, the second reinforcing bar truss for reinforcing can be installed on the deck plate body having the first reinforcing bar truss. [Effects of the Invention]

[0020] According to the above-described aspects of the deck plate with reinforcing bar trusses and the method for reinforcing a deck plate with reinforcing bar trusses of the present invention, a second reinforcing bar truss can be easily installed on the deck plate body having a first reinforcing bar truss.

[0021] According to the deck plate group of the present invention, the vicinity of the opening can be reinforced. [Brief explanation of the drawings]

[0022] [Figure 1] 1(A) and 1(B) are views showing a deck plate group according to an embodiment of the present invention, where FIG. 1(A) is a plan view and FIG. 1(B) is a front view. [Figure 2] FIG. 2 is a plan view showing a deck plate with reinforcing bar trusses placed near the opening. [Figure 3] FIG. 3 is a perspective view of a deck plate with reinforcing bar trusses according to an embodiment of the present invention. [Figure 4] FIG. 4 is a front view of a deck plate with reinforcing bar trusses according to an embodiment of the present invention. [Figure 5] FIG. 5 is a front view showing the steps of a method for constructing a deck plate with reinforcing bar trusses according to an embodiment of the present invention. [Figure 6] FIG. 6 is a front view of a deck plate with reinforcing bar trusses according to a modified example of the present invention. [Figure 7] 7(A) and 7(B) are views showing a deck plate group according to a modified example of the present invention, where FIG. 7(A) is a plan view and FIG. 7(B) is a front view. [Figure 8] FIG. 8 is a front view of a conventional deck plate with reinforcing bar trusses. [Figure 9] FIG. 9 is a front view showing the procedure for additionally installing upper and lower reinforcing bars on a conventional deck plate with reinforcing bar trusses. DETAILED DESCRIPTION OF THE INVENTION

[0023] <Embodiment> Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0024] 1(A) and 1(B) are diagrams showing a deck plate group 50 according to an embodiment of the present invention, with Fig. 1(A) being a plan view and Fig. 1(B) being a front view. Fig. 2 is a plan view showing a deck plate 1 with reinforcing bar trusses arranged near an opening 3.

[0025] A deck plate group 50 according to an embodiment of the present invention comprises a row of multiple reinforcing bar trussed deck plates 1. Each of the multiple reinforcing bar trussed deck plates 1 extends in one direction and, when viewed from above, are aligned in a direction perpendicular to the one direction. In this specification, "parallel" refers not only to cases where two lines, edges, or surfaces do not intersect even when extended, but also to cases where the angle between the two lines, edges, or surfaces is within a range of 10°. Furthermore, "orthogonal" refers to cases where the angle between the two lines, edges, or surfaces is within a range of 90°±10°. A slab is constructed by pouring concrete C onto the base plate 6 of each reinforcing bar trussed deck plate 1 so that the reinforcing bars in each reinforcing bar trussed deck plate 1 are embedded in the concrete C (see FIG. 4, described below). The slab constitutes the floor structure of a building and is supported on and supported by installation surfaces 2 spaced apart. Each installation surface 2 may be, for example, the top surface of a beam. The beams include main beams and sub-beams. Examples of the beams include precast beams (PCa beams) and steel beams.

[0026] The multiple deck plates 1 with reinforcing bar trusses that make up the deck plate group 50 include a deck plate 1A with reinforcing bar trusses according to an embodiment of the present invention and a deck plate 1B with reinforcing bar trusses that has a different structure from the deck plate 1A, and the deck plate 1A with reinforcing bar trusses according to an embodiment of the present invention is positioned near the opening 3 in the slab to reinforce the opening 3.

[0027] 3 and 4 are diagrams showing a deck plate 1A with reinforcing bar trusses according to an embodiment of the present invention, with Fig. 3 being a perspective view and Fig. 4 being a front view.

[0028] A deck plate 1A with reinforcing bar trusses (hereinafter referred to as deck plate 1A) according to an embodiment of the present invention comprises a deck plate main body 4 and reinforcing members 5. The deck plate main body 4 has a structure similar to that of the deck plate 1B with reinforcing bar trusses (FIGS. 1 and 2), and the deck plate main body 4 includes a first reinforcing bar truss 7 (described below). The reinforcing members 5 include a second reinforcing bar truss 20 (described below). In this application, the term "reinforcing bar truss" refers to a structure including upper end reinforcing bars, lower end reinforcing bars positioned below the upper end reinforcing bars, and corrugated lattice bars connecting the upper end reinforcing bars and the lower end reinforcing bars. The second reinforcing bar truss 20 includes second upper end reinforcing bars 22 and second lower end reinforcing bars 23 (described below) as reinforcing bars for reinforcing the vicinity of the opening 3.

[0029] The deck plate body 4 includes a base plate 6, a plurality of first reinforcing bar trusses 7 arranged on the base plate 6, and a plurality of hanger members 8.

[0030] (Board 6) The base plate 6 forms one surface (lower surface) of the slab in the thickness direction and is supported on the installation surface 2 (for example, the upper surface of a beam). The base plate 6 is used as a disposable formwork that is not removed after concrete is poured. Examples of materials for the base plate 6 include hot-dip galvanized steel sheets. The base plate 6 is formed in a rectangular shape in a plan view. For example, the base plate 6 has a thickness of 0.4 mm, a width of 600 mm, and a length of 600 mm or more and 7000 mm or less. The base plate 6 may be a corrugated plate with ribs formed along the length direction at intervals along the width direction, or a flat plate with no ribs. The length direction of the base plate 6 is parallel to the above-mentioned "one direction in which each reinforcing bar truss deck plate 1 extends," and the width direction of the base plate 6 is parallel to the above-mentioned "direction perpendicular to the one direction." To connect the multiple rebar trussed deck plates 1 that make up the deck plate group 50, for example, engaging portions are formed on both widthwise edges of the base plate 6 of each deck plate 1A, 1B, and the engaging portions of two adjacent base plates 6, 6 are engaged with each other. It is preferable to use a plated steel plate, which has excellent corrosion resistance and rust prevention effects, as the base plate 6, and as the plated steel plate, for example, a hot-dip galvanized steel plate and steel strip specified in the JIS standard (JISG3302) can be used.

[0031] (First Reinforced Truss 7) The multiple first reinforcing bar trusses 7 are arranged at intervals in the width direction of the base plate 6. Each first reinforcing bar truss 7 includes a first upper end reinforcement 9, a first lower end reinforcement 10, and a first lattice reinforcement 11.

[0032] The first upper end reinforcement 9 and the first lower end reinforcement 10 each extend linearly in the length direction of the base plate 6. The first upper end reinforcement 9 is embedded above the neutral axis T of the concrete C. The first lower end reinforcement 10 is embedded below the neutral axis T of the concrete C. In this embodiment, the first upper end reinforcement 9 and the first lower end reinforcement 10 are located on the same vertical plane, but they do not have to be located on the same vertical plane. For example, deformed steel bars that comply with JIS G3112 standards are used as the first upper end reinforcement 9 and the first lower end reinforcement 10.

[0033] The first lattice reinforcement 11 presents a waveform that connects the first upper end reinforcement 9 and the first lower end reinforcement 10. For example, a JIS G3532 standard steel wire can be used as the above-mentioned first lattice reinforcement 11. Connecting the first upper end reinforcement 9 and the first lower end reinforcement 10 with the first lattice reinforcement 11 can be achieved, for example, by spot welding the upper bent portion of the first lattice reinforcement 11 to the first upper end reinforcement 9 and spot welding the lower bent portion of the first lattice reinforcement 11 to the first lower end reinforcement 10.

[0034] In this embodiment, the first reinforcing bar truss 7 is configured to connect a single first upper end reinforcement 9 and a single first lower end reinforcement 10 by a first lattice reinforcement 11, but the first reinforcing bar truss 7 may also be configured to connect multiple first lower end reinforcements 10 (for example, two first lower end reinforcements 10) to a single first upper end reinforcement 9 by a first lattice reinforcement 11, or to connect multiple first upper end reinforcements 9 (for example, two first upper end reinforcements 9) to a single second lower end reinforcement 10 by a first lattice reinforcement 11.

[0035] (Hanging material 8) The multiple hanger members 8 are arranged at intervals in the longitudinal direction of the base plate 6 (the lines indicating the hanger members 8 are omitted from the illustration in FIGS. 1 and 2). Each hanger member 8 connects the multiple first reinforcing bar trusses 7 arranged in the width direction of the base plate 6 to each other, and also connects the multiple first reinforcing bar trusses 7 to the base plate 6.

[0036] Each hanger member 8 has mountain-shaped peaks 12 and first connection portions 13 extending from the lower ends of the peaks 12 along the upper surface of the base plate 6, which are alternately formed in the width direction of the base plate 6. The peaks 12 and the first connection portions 13 are integrally formed, for example, by bending a wire such as an iron wire. Each first connection portion 13 is fixed to the upper surface of the base plate 6. The first connection portions 13 are fixed to the upper surface of the base plate 6 by, for example, welding. Furthermore, the first upper end bars 9 of each first rebar truss 7 are fixed to the upper end of the peak portion 12 so that each first rebar truss 7 passes inside the peak portion 12. The first upper end bars 9 of each first rebar truss 7 are preferably fixed to the inside corner of the upper end of the peak portion 12 by welding. Note that if the first rebar truss 7 has multiple first lower end bars 10 connected to a single first upper end bar 9 by first lattice bars 11, for example, the single first upper end bar 9 is fixed to the upper end of the peak portion 12 by welding or the like. Furthermore, when the first rebar truss 7 is formed by connecting a plurality of first upper end bars 9 to a single second lower end bar 10 by a first lattice bar 11, for example, the plurality of first upper end bars 9 are each fixed to the peak portion 12 by welding or the like.

[0037] (Reinforcing member 5) The reinforcing member 5 includes a plurality of second reinforcing bar trusses 20 and a plurality of support members 21.

[0038] (Second steel bar truss 20) The plurality of second reinforcing bar trusses 20 are arranged at intervals in the width direction of the base plate 6. Each second reinforcing bar truss 20 includes second upper end reinforcements 22, second lower end reinforcements 23, and second lattice reinforcements 24.

[0039] The second upper end reinforcement 22 and the second lower end reinforcement 23 each extend linearly in the length direction of the base plate 6. The second upper end reinforcement 22 is embedded above the neutral axis T of the concrete C. The second lower end reinforcement 23 is embedded below the neutral axis T of the concrete C. For example, deformed steel bars that comply with JIS G3112 standards are used as the second upper end reinforcement 22 and the second lower end reinforcement 23.

[0040] The second lattice reinforcement 24 exhibits a waveform that connects the second upper end reinforcement 22 and the second lower end reinforcement 23. For example, a JIS G3532 standard steel wire can be used as the second lattice reinforcement 24. The second upper end reinforcement 22 and the second lower end reinforcement 23 can be connected by the second lattice reinforcement 24, for example, by spot welding the upper bent portion of the second lattice reinforcement 24 to the second upper end reinforcement 22 and spot welding the lower bent portion of the second lattice reinforcement 24 to the second lower end reinforcement 23.

[0041] In this embodiment, the second reinforcing bar truss 20 is configured to connect a single second upper end reinforcement 22 and a single second lower end reinforcement 23 by a second lattice reinforcement 24, but the second reinforcing bar truss 20 may also be configured to connect multiple second lower end reinforcements 23 (for example, two second lower end reinforcements 22) to a single second upper end reinforcement 22 by a second lattice reinforcement 24, or to connect multiple second upper end reinforcements 22 (for example, two second upper end reinforcements 22) to a single second lower end reinforcement 23 by a second lattice reinforcement 24.

[0042] Furthermore, it is preferable that the second reinforcing bar truss 20 has the same structure as the first reinforcing bar truss 7. In this way, a single reinforcing bar truss structure can be used for both the first reinforcing bar truss 7 and the second reinforcing bar truss 20, which makes inventory management easier.

[0043] (Support material 21) The plurality of support members 21 are arranged at intervals in the longitudinal direction of the substrate 6 (in FIGS. 1 and 2, the lines indicating the support members 21 are omitted).

[0044] Each support member 21 has a positioning valley-shaped valley portion 25 that supports the second rebar truss 20 from below so that the second rebar truss 20 is positioned between two adjacent first rebar trusses 7, 7 at the same height as the first rebar truss 7. In this embodiment, each support member 21 has the valley portions 25 and second connection portions 26 extending from the upper ends of the valley portions 25 formed alternately in the width direction of the substrate 6. However, each support member 21 may have a configuration in which the upper ends of adjacent valley portions 25 in the width direction of the substrate 6 are connected to each other. In each support member 21, the second connection portions 26 are placed on the first upper end reinforcement bars 9 so that one valley portion 25 is located between two adjacent peak portions 12, 12 in the width direction. In each second rebar truss 20, the second lower end reinforcement bars 23 are placed on the lower ends of the valley portions 25. In addition, when the second rebar truss 20 is configured such that a plurality of second lower end reinforcements 23 are each connected to a single second upper end reinforcement 22 by a second lattice reinforcement 24, the plurality of second lower end reinforcements 23 are each placed on the valley portion 25. In addition, when the second rebar truss 20 is configured such that a plurality of second upper end reinforcements 22 are each connected to a single second lower end reinforcement 23 by a second lattice reinforcement 24, the single second lower end reinforcement 23 is placed on the valley portion 25.

[0045] In the deck plate 1A having the above configuration, the deck plate main body 4 (an integrated body consisting of the base plate 6, multiple first reinforcing bar trusses 7, and multiple hanger members 8), the second reinforcing bar trusses 20 (an integrated body consisting of second upper end reinforcement 22, second lower end reinforcement 23, and second lattice reinforcement 24), and the support members 21 are each manufactured in a factory. When constructing a slab, the deck plate main body 4, multiple second reinforcing bar trusses 20, and multiple support members 21 manufactured in the factory are each transported to a construction site (the slab construction location), and the deck plate 1A is constructed on site using the deck plate main body 4, multiple second reinforcing bar trusses 20, and multiple support members 21.

[0046] FIG. 5 is a diagram showing the steps of the method for constructing the deck plate 1A.

[0047] When constructing the deck plate 1A according to this embodiment, the deck plate main body 4 is installed (as shown in FIG. 5(A)) so that the base plate 6 of the deck plate main body 4 is supported on the installation surface 2 (FIG. 1), and then a first step is carried out in which multiple support members 21 are arranged at intervals along the length of the base plate 6 (FIG. 5(B)). In this first step, as shown in FIG. 5(B), each second connection portion 26 of each support member 21 is placed on the first upper end reinforcement 9 so that one valley portion 25 of each support member 21 is located between two peak portions 12, 12 adjacent in the width direction of the base plate 6 (the left-right direction in FIG. 5).

[0048] Next, as shown in Figure 5(C), a second step is carried out in which each second reinforcing bar truss 20 is placed on the valley portion 25 and supported from below by the valley portion 25. In this second step, the second lower end reinforcement 23 of each second reinforcing bar truss 20 is placed on the valley portion 25 so that each second reinforcing bar truss 20 passes inside the valley portion 25. This completes the construction of the deck plate 1A, and the reinforcing members 5, which include the second upper end reinforcement 22 and the second lower end reinforcement 23, are installed on the deck plate main body 4, which includes the first upper end reinforcement 9 and the first lower end reinforcement 10.

[0049] According to the deck plate 1A and its construction method shown in the above embodiment, the second reinforcing bar truss 20 can be installed on the deck plate main body 4 including the first reinforcing bar truss 7 by a simple operation of performing only the first and second steps. That is, according to the deck plate 1A and its construction method shown in the above embodiment, the second reinforcing bar truss 20 including the second upper end reinforcing bars 22 and the second lower end reinforcing bars 23 can be installed on the deck plate main body 4 including the first reinforcing bar truss 7 including the first upper end reinforcing bars 9 and the first lower end reinforcing bars 10 by performing only the first and second steps. Therefore, the second upper end reinforcing bars 22 and the second lower end reinforcing bars 23 can be installed without the great amount of effort required in the prior art, which required as many as five steps to install the reinforcing upper end reinforcing bars and the lower end reinforcing bars.

[0050] Furthermore, according to the deck plate group 50 shown in the above embodiment, the deck plate 1A, which has a second reinforcing bar truss 20 for reinforcing in addition to the first reinforcing bar truss 7, is provided near the opening 3, thereby reinforcing the area near the opening 3.

[0051] <Modification> The above embodiment is merely one of various embodiments of the present invention. The embodiment can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. Modifications of the embodiment are listed below. The modifications described below can be applied in appropriate combinations.

[0052] 3 to 5 show an example in which the second lower end rebars 23 of each second rebar truss 20 are placed on the lower ends of the valley portions 25, and each second rebar truss 20 is inclined relative to the vertical direction, so that the second upper end rebars 22 of each second rebar truss 20 are aligned along the upper ends of the valley portions 25. However, as shown in Fig. 6, by using a tie wire 30 (gauge wire) to tie the second upper end rebars 22 of each second rebar truss 20 to the valley portions 25, each second rebar truss 20 may be extended in the vertical direction, and the second upper end rebars 22 and the second lower end rebars 23 of each second rebar truss 20 may be positioned on the same vertical plane. In this case, in the second step described above, the second lower end rebars 23 of each second rebar truss 20 are placed on the lower ends of the valley portions 25, and the second upper end rebars 22 of each second rebar truss 20 are tied to the valley portions 25 using the tie wire 30.

[0053] Furthermore, in the deck plate 1A according to the above embodiment, each second connection portion 26 of each support member 21 was placed on the first upper end reinforcement 9 so that one valley portion 25 of each support member 21 was located between two adjacent peaks 12, 12 in the width direction of the base plate 6, but the second connection portion 26 of each support member 21 may also be placed on the first upper end reinforcement 9 so that multiple valleys 25 are located between two adjacent peaks 12, 12 in the width direction of the base plate 6. In this case, by placing the second lower end reinforcement 23 of each second reinforcing bar truss 20 on the valley portion 25 so that each second reinforcing bar truss 20 passes inside the valley portion 25, multiple second reinforcing bar trusses 20 can be arranged between two first reinforcing bar trusses 7, 7.

[0054] The deck plate group of the present invention can also be modified as shown in FIG. 7 (FIGS. 7(A) and 7(B) are views showing a deck plate group 60 according to a modified example of the present invention, with FIG. 7(A) being a plan view and FIG. 7(B) being a front view). In the deck plate group 50 (FIG. 1) shown in the above embodiment, the deck plate 1A was arranged only near the opening 3, but the deck plate group according to the embodiment of the present invention can be configured such that only a plurality of deck plates 1A are lined up, as in the deck plate group 60 shown in FIG. 7 (i.e., the deck plate group according to the embodiment of the present invention may be made up of a plurality of deck plates 1A). In this way, the entire deck plate group can be reinforced.

[0055] In addition, in the above embodiment, an example is shown in which the deck plate 1A is applied to construct a slab that constitutes the floor structure of a building, but the deck plate with reinforcing bar trusses of the present invention may also be applied to construct a roof structure or a wall structure. [Explanation of symbols]

[0056] 1A Deck plate with steel truss 2 Installation surface 4 Deck plate body, 5 Reinforcing members 6 PCB 7 First Reinforced Concrete Truss 8 Hanging material 9 First upper end reinforcement 10 First bottom reinforcement 11 First lattice muscle 12 Yamabe 13 First connection part 20 Second steel bar truss 21 Support material 22 Second upper end reinforcement 23 Second bottom reinforcement 24 Second lattice muscle 25 Valley 26 Second connection part 50,60 Deck plate group

Claims

1. The deck plate body, a reinforcing member; The deck plate body includes a base plate and a plurality of first reinforcing bar trusses arranged at intervals in a width direction of the base plate, The reinforcing member includes a plurality of second reinforcing steel trusses arranged at intervals in the width direction and a plurality of support members arranged at intervals in the length direction of the base plate, The support material is a deck plate with reinforcing bar trusses, which has a positioning valley portion that supports the second reinforcing bar truss from below so that the second reinforcing bar truss is positioned between the adjacent first reinforcing bar truss at the same height as the first reinforcing bar truss.

2. The deck plate with steel trusses described in claim 1, wherein the first steel truss comprises first upper end reinforcement and first lower end reinforcement extending linearly in the longitudinal direction, and a wavy first lattice reinforcement connecting the first upper end reinforcement and the first lower end reinforcement.

3. The deck plate with steel trusses described in claim 1, wherein the second steel truss comprises second upper end reinforcement and second lower end reinforcement extending linearly in the longitudinal direction, and second wavy lattice reinforcement connecting the second upper end reinforcement and the second lower end reinforcement.

4. The support material has valley portions formed in a valley shape and second connection portions extending from the upper ends of the valley portions alternately formed in the width direction, and the second connection portions are placed on the first upper end reinforcing bars so that one or more valley portions are located between two adjacent peak portions in the width direction, 2. The deck plate with reinforcing bar trusses according to claim 1, wherein the second lower end reinforcement of each of the second reinforcing bar trusses is placed on the valley portion so that each of the second reinforcing bar trusses passes inside the valley portion.

5. The deck plate with reinforcing bar trusses according to claim 1 , wherein the first reinforcing bar truss and the second reinforcing bar truss have the same structure.

6. A deck plate group including the reinforcing bar truss deck plate according to claim 1, A deck plate group in which the deck plate with reinforcing bar truss is provided near an opening.

7. 2. A method for constructing a steel truss deck plate according to claim 1, comprising: a first step of arranging a plurality of support members at intervals in the longitudinal direction of the base plate with the deck plate body installed so that the base plate is supported on an installation surface; a second step of placing each of the second reinforcing bar trusses on the valley portion to support each of the second reinforcing bar trusses from below by the valley portion.

Images