JP2023112334A - Deck plate and composite structure - Google Patents

Abstract

To provide a deck plate and a composite structure capable of saving labor at both a manufacturing site and a construction site.SOLUTION: A deck plate 1 for a composite structure comprises a plate-like plate body 2, and a support part 3 for supporting a reinforcing member 200 on the plate body 2. The plate body 2 has bottom surface parts 21 as first surface parts arranged on one side in a plate thickness direction, and upper surface parts 22 as second surface parts arranged on the other side alternately in a parallel arrangement direction (Y direction) along the inside of a surface of a plate, and has a connection part 25 arranged on the other side of the bottom surface part 21 and connected to another deck plate on both end parts 2A, 2B in the parallel arrangement direction. The support part 3 supports the reinforcing member 200 to be positioned on the other side with respect to the bottom surface part 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to deck plates and composite structures.

BACKGROUND ART Conventionally, as a reinforcing bar structure used in a composite slab structure, a structure provided with a supporting member for supporting a reinforcing wire mesh has been proposed (see, for example, Patent Document 1). In the reinforcing steel structure described in Patent Document 1, the support member is configured to be foldable with respect to the corrugated steel plate, so that the support member can be assembled at the construction site after the support member is transported in a folded state. It is designed to improve transport efficiency and workability.

JP 2020-29662 A

In the reinforcing steel structure described in Patent Document 1, the supporting member is supported on the valley bottom portion of the corrugated steel plate. The corrugated steel plate is used in such a direction that the valley bottom portions are positioned at both ends in the width direction, and the valley bottom portions are connected to adjacent corrugated steel plates. At this time, among the valley bottom portions, those that are arranged in the center in the width direction (those that are not connected to other corrugated steel plates) and those that are arranged at the ends in the width direction (those that are connected to other corrugated steel plates). There were cases where the shape was different. For this reason, it is necessary to provide support members that match the respective valley bottoms, which may increase the number of types of parts and increase the number of man-hours at the manufacturing site.

On the other hand, since the crests of the corrugated steel sheet have the same shape, if the crests are provided with support members, the increase in the number of types of parts can be suppressed and the number of man-hours at the manufacturing site can be reduced. can do. On the other hand, during construction, the crest is likely to be used as a scaffolding for workers, and arranging a support member on the crest will reduce workability at the construction site. In this way, even if one of the manufacturing site and the construction site can be labor-saving, it is difficult to omit both.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to provide a deck plate and a composite structure that can save labor at both the manufacturing site and the construction site.

In order to achieve the above object, a deck plate according to the present invention is a deck plate for a composite structure, comprising a plate-shaped plate main body and a support portion for supporting a reinforcing member on the plate main body. In addition, the plate body has a first surface portion arranged on one side in the plate thickness direction and a second surface portion arranged on the other side alternately in the side-by-side direction along the surface of the plate, Both ends in the side-by-side direction have connection portions arranged on the other side of the first surface portion and connected to other deck plates, and the support portion connects the reinforcing member to the first deck plate. It is characterized by supporting so that it may be located on the said other side with respect to a surface part.

In the deck plate according to the aspect of the present invention, the support portion includes a fixing portion fixed to the other side surface of the first surface portion, and rotatably pivotally supported with respect to the fixing portion. and a standing portion for supporting the reinforcing member, wherein the standing portion is capable of adjusting the distance between the reinforcing member and the first surface portion in the plate thickness direction by rotating with respect to the fixed portion. is.

In the deck plate according to an aspect of the present invention, the plate body has an inclined surface portion that connects the first surface portion and the second surface portion and is inclined with respect to the plate thickness direction, and the support portion includes: It is attached to the plate body by having an engaging portion that engages with recesses formed in the inclined surface portion, the boundary portion between the inclined surface portion and the second surface portion, and the boundary portion between the inclined surface portion and the connecting portion. .

In the deck plate according to an aspect of the present invention, the concave portion is a dovetail groove extending along the extending direction of the first surface portion and the second surface portion.

A composite structure according to the present invention is a composite structure comprising the deck plate according to any one of the above, the reinforcing member, and a concrete structure, wherein the plate main body has the first surface portion which is a beam. The concrete structure is provided on the surface of the plate body on the other side, and the connection part is a connection part of another deck plate at a position spaced apart from the beam to the other side It is characterized by being connected to a part.

The deck plate and composite structure according to the present invention can save labor both at the manufacturing site and at the construction site.

1 is a perspective view showing a deck plate according to a first embodiment of the invention; FIG. It is a sectional view showing a deck plate concerning a 1st embodiment of the present invention. FIG. 4 is a side view showing a supporting portion of the deck plate according to the first embodiment of the present invention; FIG. 5 is a perspective view showing a deck plate according to a second embodiment of the invention; FIG. 5 is a cross-sectional view showing a deck plate according to a second embodiment of the present invention; FIG. 11 is a side view showing a supporting portion of a deck plate according to a second embodiment of the present invention; FIG. 4 is a cross-sectional view showing a deck plate according to a first modified example of the present invention; FIG. 11 is a side view showing a supporting portion of the deck plate according to the first modified example of the present invention; FIG. 5A is a sectional view and a plan view showing a deck plate according to a first modified example of the present invention; FIG. 11 is a cross-sectional view showing a deck plate according to a second modified example of the present invention; FIG. 11 is a side view showing a supporting portion of a deck plate according to a second modified example of the present invention;

[First embodiment]
A first embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a deck plate 1 according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view showing the deck plate 1, and FIG. 3 shows a support portion 3 of the deck plate 1. It is a side view.

As shown in FIGS. 1 and 2, the deck plate 1 according to the first embodiment of the present invention is a deck plate for a composite structure, and includes a plate-like plate body 2 and a reinforcing member 200 attached to the plate body 2. and a support portion 3 for supporting. The plate body 2 has a bottom surface portion 21 as a first surface portion arranged on one side in the plate thickness direction and a top surface portion 22 as a second surface portion arranged on the other side in parallel along the plane of the plate. Both ends 2A and 2B in the side-by-side direction have connecting portions 25 arranged on the other side of the bottom portion 21 and connected to other deck plates. Support portion 3 supports reinforcing member 200 so as to be positioned on the other side of bottom surface portion 21 . The deck plate 1 will be specifically described below.

A composite slab structure (composite structure) is constructed by placing concrete in the plate body 2 of the deck plate 1 . That is, this synthetic slab structure comprises a deck plate 1 , a reinforcing member 200 and a concrete structure provided on the upper surface of the plate body 2 . Note that the composite slab structure may include reinforcing wire mesh or the like. Also, the deck plate 1 may be provided with other reinforcing members in addition to the reinforcing member 200 .

The deck plate 1 has a plate-shaped plate main body 2 and a plurality of support portions 3 for supporting the reinforcing member 200 . The support portions 3 are arranged at proper intervals so as to be able to support the reinforcing member 200 .

The plate main body 2 is formed in a rectangular shape in plan view. Hereinafter, the long side direction (extending direction of the plate body 2) of this rectangle is the X direction, the short side direction (width direction) is the Y direction, and the plate thickness direction of the plate body 2 is the Z direction. The deck plate 1 is used so that the Z direction coincides with the vertical direction, and is arranged above the beam H in the vertical direction. Hereinafter, up and down in the Z direction are based on the vertical direction, the lower side in the vertical direction is defined as one side in the Z direction, and the upper side in the vertical direction is defined as the other side in the Z direction.

The plate body 2 is a corrugated steel plate in which grooves extending in the X direction and peaks extending in the X direction are alternately arranged in the Y direction. The plate body 2 has two bottom surface portions 21 , one top surface portion 22 , inclined surface portions 23 and 24 connecting the bottom surface portion 21 and the top surface portion 22 , and connection portions 25 and 26 . Note that the number of bottom surface portions and top surface portions in one plate body is not limited to the above. The plate main body 2 is entirely formed of one sheet of thin steel plate, and the surface thereof may be appropriately subjected to corrosion-resistant processing such as hot-dip galvanization. The bottom surface portion 21, the top surface portion 22, the inclined surface portions 23 and 24, and the connection portions 25 and 26 have the X direction as their longitudinal direction (extending direction).

The bottom surface portion 21 is a portion to be placed on the beam H, and the inclined surface portions 23 and 24 are connected to both ends in the Y direction. The inclined surface portions 23 and 24 are inclined with respect to the Z direction so as to separate from each other in the Y direction as they go upward from the bottom surface portion 21 . The upper surface portion 22 is a portion that connects the upper end portions of the pair of inclined side portions 23 and 24 and is arranged apart from the beam H upward. The bottom surface portion 21 is a first surface portion arranged on one side (lower side) in the thickness direction (Z direction), and the top surface portion 22 is arranged on the other side (upper side) in the thickness direction (Z direction). These are alternately arranged in the Y direction along the plane of the plate body 2 . That is, the Y direction is the direction in which the bottom surface portion 21 and the top surface portion 22 are arranged side by side.

The plate body 2 has grooves 231 and 241 formed on the upper surfaces of the inclined surface portions 23 and 24, and a dovetail groove 221 formed at the boundary between the inclined surface portions 23 and 24 and the upper surface portion 22 and connected to the inclined surface portions 23 and 24. Dovetail grooves 251 and 261 are formed at the boundaries between the portions 25 and 26 . The grooves 231 and 241 are formed by, for example, arranging a plurality of recesses rectangular in plan view in the X direction. The dovetail grooves 221, 251, 261 are grooves extending in the X direction.

In the plate body 2, the connecting portions 25 and 26 positioned at both ends 2A and 2B in the Y direction are arranged at positions separated from the beam H in a state where the bottom portion 21 is placed on the beam H. As shown in FIG. That is, the connection portions 25 and 26 are connected to the inclined surface portions 23 and 24 extending upward from the bottom surface portion 21 . The connection portions 25 and 26 are arranged at the same height as the top surface portion 22 in the Z direction and are arranged above the bottom surface portion 21 . One connecting portion 25 has a shape that can be fitted with the other connecting portion 26, and has, for example, a shape in which edges are folded in opposite directions. That is, the connecting portion 25 of a deck plate 1 and the connecting portion 26 of another deck plate 1 adjacent in the Y direction are connected by fitting, and these deck plates 1 are connected to each other. . As described above, the deck plate 1 of the present embodiment is used in the opposite direction to a deck plate in which the connection portion is placed on the beam.

In a state in which the plurality of plate bodies 2 are connected, the bottom surface portion 21 and the pair of inclined surface portions 23 and 24 sandwiching it form a valley portion 27. forms a peak portion 28, and a peak portion 29 is formed by the connection portions 25, 26 and the pair of inclined surface portions 23, 24 sandwiching them. At this time, the shape of the upper surface portion 22 and the shape of the connecting portions 25 and 26 in the fitted state are different from each other.

The support portions 3 are provided on each bottom surface portion 21 and support the reinforcing member 200 by a plurality of support portions 3 arranged in the X direction. The reinforcing member 200 is, for example, a reinforcing bar, and is shaped like a bar extending in the X direction. One reinforcing member 200 may be supported by a plurality of supporting portions 3 arranged in the X direction, or a plurality of reinforcing members 200 may be supported.

The support portion 3 includes a fixed portion 31 fixed to an upper surface (the other side surface) 211 of the bottom portion 21 and an upright portion 32 that is rotatably supported on the fixed portion 31 and supports the reinforcing member 200 . and have The fixed portion 31 has a plate-like portion arranged along the upper surface 211, for example. A method of fixing the fixing portion 31 may be, for example, fastening with a bolt or the like, or may be welding.

The standing portion 32 includes one end portion 321 pivotally supported by the fixed portion 31, the other end portion 322 opposite to the fixed portion 31, and an extension portion extending between the one end portion 321 and the other end portion 322. 323 and . The one end portion 321 is pivotally supported by the fixed portion 31 with the Y direction as the direction of the rotation axis. The reinforcing member 200 is connected to the other end 322 . At this time, it is preferable that the reinforcing member 200 is connected to the other end portion 322 so as to be rotatable around a rotation axis along the Y direction.

By rotating the standing portion 32, it is possible to switch between a collapsed state in which the extending portion 323 extends along the X direction and a standing state in which the extending portion 323 extends along the Z direction. The rotatable range of the standing portion 32 may be set to allow at least the two states described above, and may be 90° or 180°, for example. When the upright portion 32 is laid down, the reinforcing member 200 connected to the other end portion 322 is positioned below the upper surface portion 22 and inside the valley portion 27 . When the standing portion 32 is in the standing state, the reinforcing member 200 connected to the other end portion 322 is positioned above the upper surface portion 22 . As described above, the support portion 3 supports the reinforcing member 200 so as to be positioned above the bottom portion 21 . Also, the upright portion 32 can adjust the distance between the reinforcing member 200 and the bottom surface portion 21 by rotating with respect to the fixed portion 31, that is, the Z-direction position of the reinforcing member 200 can be adjusted. The reinforcing member 200 may be supported so as to be positioned between the bottom surface portion 21 and the top surface portion 22 (that is, below the top surface portion 22) in the Z direction when the reinforcing member 200 is in the upright state.

The support portion 3 may be assembled to the plate body 2 at a factory or the like before shipment, or may be shipped separately from the plate body 2 and then assembled at the construction site. Further, when the support portion 3 is assembled to the plate body 2 before shipment, the reinforcing member 200 may be connected as a constituent part of the deck plate 1 at a factory or the like before shipment. They may be shipped separately and then connected at the construction site.

By using the deck plate 1 as described above during construction of the composite structure, the support section 3 and the reinforcing member 200 are not arranged on the upper surface section 22 . As a result, the operator can use the upper surface portion 22 as a foothold, and workability can be improved. Further, since the connection portions 25 and 26 connected to the other deck plate 1 constitute the peak portion 29, the shape of the valley portion 27 formed by the bottom surface portion 21 can be made similar. 27 can be shared. As a result, the number of types of parts can be reduced, and man-hours such as manufacturing and management in the factory can be reduced.

In addition, the connecting portions 25 and 26 forming the peak portion 29 are separated from the beam H, and compared with the structure in which the connecting portion contacts the beam H, the degree of freedom in fitting shape can be improved. As a result, the portion that is formed in a convex shape for fitting can be made convex on the side of the beam H and on the side opposite to the side where the concrete is placed. If the convex portion for fitting is placed on the side where the concrete is placed, the concrete tends to be damaged. As described above, since the connection portions 25 and 26 form the ridges 29, the projections for fitting can be projected toward the beam H side, thereby suppressing concrete breakage.

Moreover, the concrete structure provided on the upper surface of the plate main body 2 has the Z direction as the thickness direction. When a force acts on such a concrete structure from above, the stress acting on it increases near the ends in the Z direction, and decreases when it approaches the center in the Z direction (approaching the neutral axis). Since the connecting portions 25 and 26 are separated from the beam H, the stress applied to the concrete structure in the vicinity of the connecting portions 25 and 26 can be suppressed. Although the strength of the concrete structure tends to decrease in the vicinity of the connecting portions 25 and 26, by suppressing the stress applied in this way, the yield strength of the composite structure can be improved.

As described above, according to the deck plate 1 according to the first embodiment of the present invention, the supporting portion 3 supports the reinforcing member 200 so as to be positioned above the bottom portion 21, and the connecting portions 25 and 26 is arranged above the bottom surface portion 21, labor can be saved at both the manufacturing site and the construction site.

In addition, since the support portion 3 can adjust the distance between the reinforcing member 200 and the bottom surface portion 21, when the support portion 3 is assembled to the plate body 2 and shipped, the reinforcing member 200 can be attached to the bottom surface portion 21. It is possible to bring them close to each other and improve the transportation efficiency.

[Second embodiment]
A second embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a perspective view showing a deck plate 1B according to a second embodiment of the present invention, FIG. 5 is a cross-sectional view showing the deck plate 1B, and FIG. 6 shows a support portion 3 of the deck plate 1B. It is a side view. In this embodiment, the same reference numerals are given to the configurations common to the first embodiment, and the description thereof is omitted.

A deck plate 1B of this embodiment includes a plate body 2 similar to that of the first embodiment, and a support portion 3B that is different from that of the first embodiment. The support portion 3B is formed in a quadrangular pyramid shape as a whole by, for example, two linear members. That is, two linear members intersect when viewed from the Z direction, and each linear member is bent at the intersection 33, so that one linear member constitutes two oblique sides. .

The supporting portion 3B supports the reinforcing member 200 at, for example, the crossing portion 33 serving as the vertex, and has mounting portions 34 attached to the plate body 2 at portions corresponding to the four corners of the bottom surface of the quadrangular pyramid. The mounting portion 34 includes a first mounting portion 341 provided along the upper surface 211 of the bottom surface portion 21 and a second mounting portion 342 provided along the upper surfaces of the inclined surface portions 23 and 24 (surfaces inside the valley portion 27). , has The second mounting portion 342 extends upward from its base end on the bottom side, and has an engaging portion 343 at its tip (upper end). The engaging portion 343 protrudes toward the inclined surface portions 23 and 24 (for example, along the Y direction) and engages with one of the concave portions forming the groove portions 231 and 241 . The supporting portion 3B is attached to the plate main body 2 by such an engaging portion 343. As shown in FIG.

The crossing portion 33 is located above the top surface portion 22 and supports the reinforcing member 200 so as to be located above the bottom surface portion 21 and the top surface portion 22, as in the first embodiment. The reinforcing member 200 may be supported so as to be positioned between the bottom surface portion 21 and the top surface portion 22 (that is, below the top surface portion 22) in the Z direction when the reinforcing member 200 is in the upright state.

According to the deck plate 1B according to the second embodiment of the present invention, as in the first embodiment, it is possible to save labor at both the manufacturing site and the construction site.

In addition, since the support portion 3B is attached to the plate body 2 by the engagement portion 343 that engages with the recesses forming the grooves 231 and 241, the support portion 3B can be attached using the existing recesses. It is possible to divert the plate body 2 of , or to reduce design changes.

It should be noted that the present invention is not limited to the above-described embodiments, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention. For example, in the above-described second embodiment of the present invention, the engaging portion 343 of the support portion 3B engages with the concave portions of the groove portions 231 and 241. It may extend along the direction. That is, as shown in FIGS. 7 to 9 as an example, dovetail grooves 232 and 242 as concave portions extending along the X direction are formed in the inclined surface portions 23 and 24 of the plate body 2, and the engaging portion 343 is formed in the dovetail groove 232. , 242.

In addition, in the second embodiment, the crossing portion 33 is formed in an upwardly convex shape (having a vertex portion). , and the reinforcing member 200 may be placed in the recessed intersection.

Further, the engagement target of the engagement portion of the support portion is not limited to the concave portion formed in the inclined surface portion, and other portions of the plate body may be the engagement target. That is, as shown in FIGS. 10 and 11 as an example, the support portion 3C has a mounting portion 35, and the mounting portion 35 has an engaging portion 353 that engages with the dovetail grooves 221, 251, 261. good too. In the example shown in FIGS. 10 and 11, the mounting portion 35 includes a first mounting portion 351 provided along the upper surface 211 of the bottom surface portion 21 and along the upper surfaces of the inclined surface portions 23 and 24 (surfaces inside the valley portion 27). The engaging portion 353 is provided at the tip of the second mounting portion 352 .

Although the embodiments of the present invention have been described above, the present invention is not limited to the deck plates according to the above-described embodiments of the present invention, and includes all aspects included in the concept and scope of claims of the present invention. Moreover, each configuration may be selectively combined as appropriate so as to achieve at least part of the above-described problems and effects. For example, the shape, material, arrangement, size, etc. of each component in the above embodiments may be changed as appropriate according to the specific usage of the present invention.

DESCRIPTION OF SYMBOLS 1, 1B, 1C... Deck plate 2... Plate main body 21... Bottom part (first surface part) 22... Upper surface part (second surface part) 23, 24... Inclined surface part 25, 26... Connecting part 2A, 2B... Ends 221, 232, 242, 251, 261... Dovetail grooves (recesses) 231, 241... Grooves (recesses) 3, 3B, 3C... Supporting parts 31... Fixed parts 32... Rising parts 343 , 353... engaging portion, 200... reinforcing member, beam H

Claims (5)

A deck plate for a composite structure, comprising:
a plate-shaped plate body;
a support portion for supporting the reinforcing member on the plate body,
The plate body has a first surface portion arranged on one side in the plate thickness direction and a second surface portion arranged on the other side alternately in a side-by-side arrangement direction along the plane of the plate, and Both ends in the installation direction have connecting portions arranged on the other side of the first surface portion and connected to other deck plates,
The deck plate, wherein the supporting portion supports the reinforcing member so as to be positioned on the other side with respect to the first surface portion. The supporting portion includes a fixing portion fixed to the other side surface of the first surface portion, and an upright portion rotatably supported on the fixing portion and supporting the reinforcing member. have
2. The deck according to claim 1, wherein the standing portion can adjust the interval between the reinforcing member and the first surface portion in the plate thickness direction by rotating with respect to the fixed portion. plate. The plate body has an inclined surface portion that connects the first surface portion and the second surface portion and is inclined with respect to the plate thickness direction,
The support portion has an engaging portion that engages with recesses formed in the inclined surface portion, a boundary portion between the inclined surface portion and the second surface portion, and a boundary portion between the inclined surface portion and the connecting portion. 2. A deck plate according to claim 1, attached to a plate body. 4. The deck plate according to claim 3, wherein the recess is a dovetail groove extending along the extending direction of the first surface portion and the second surface portion. A composite structure comprising the deck plate according to any one of claims 1 to 4, the reinforcing member, and a concrete structure,
The plate body serves as a bottom surface portion on which the first surface portion is placed on the beam,
The concrete structure is provided on the other side surface of the plate body,
A composite structure, wherein the connecting portion is connected to a connecting portion of another deck plate at a position spaced from the beam to the other side.

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