Spacers with rebar supports, deck plates with spacers and composite slabs

Abstract

To provide a reinforcement receiver added spacer, a spacer added deck plate, and a composite slab that provide excellent workability even though their configuration are simple.SOLUTION: A reinforcement receiver added spacer (100) comprises: a spacer including bridge parts (31, 38) and leg parts (32, 38), the bridge parts assembled by engaging with slopes (23) of a deck plate (20) composed of a corrugated steel plate having a corrugated part (24), with a corrugated cross section, made of a crest (21) and valley bottoms (22) alternately continued via the slopes (23) and are provided so as to face the crest (21), the leg parts connected with the bridge parts (31, 38) and provided so as to be engageable with the slopes (23); and a reinforcement receiver that is fixed integrally with the bridge parts to place a reinforcement on the bridge parts and holds the reinforcement.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a spacer with a rebar support, a deck plate with a spacer, and a composite slab. [Background technology]

[0002] Conventionally, composite slabs formed by standard construction methods, which account for the majority of floor construction methods for steel-framed buildings, are deck composite slabs that are a composite structure of deck plates and concrete, and have excellent strength and toughness and can be realized with simple configuration and construction.

[0003] Such composite deck slabs have the advantage of being able to reduce the amount of reinforcing steel required compared to conventional reinforced concrete slabs, but they also have the disadvantage that the concrete is prone to cracking.

[0004] For this reason, it is common to construct a composite slab by pouring concrete over a deck plate with a welded wire mesh placed on top to prevent the concrete from cracking.

[0005] In such composite slabs, in order to ensure the height from the top surface of the deck plate to the welded wire mesh, a spacer is placed on the deck plate, and the welded wire mesh is then placed on this spacer.

[0006] In recent years, proposals have also been made for reinforcement spacers that have a structure that allows the welded wire mesh to stand stably on its own when placed on a deck plate, and that can stably maintain its height position from the top surface of the deck plate (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 6159842 Summary of the Invention [Problem to be solved by the invention]

[0008] In the case of the reinforcement spacer described in Patent Document 1, a worker arranges multiple reinforcement spacers on a deck plate at a construction site and stands up the multiple reinforcement spacers. However, since the reinforcement spacers are simply placed on the deck plate, the spacing between the reinforcement spacers shifts during construction work. This forces the worker to carry out tedious and complicated work, and further improvements in workability have been required.

[0009] The present invention has been made in consideration of the above-mentioned points, and aims to provide a spacer with reinforcing bar support, a deck plate with spacer, and a composite slab which are simply constructed yet have excellent workability. [Means for solving the problem]

[0010] In order to solve such problems, the spacer with reinforcing bar support of the present invention is assembled by engaging with the inclined portion of a deck plate made of corrugated steel plate having a corrugated portion with a cross-sectional corrugated shape in which peaks and valleys are alternately connected via inclined portions, and comprises a spacer having a bridge portion opposite the peaks and legs connected to the bridge portion and arranged so as to be engageable with the inclined portions, and a reinforcing bar support that is fixed integrally with the bridge portion to hold the reinforcing bar in order to place the reinforcing bar on the bridge portion.

[0011] In the present invention, it is preferable that the reinforcing bar receiver is provided at a position of the bridge portion shifted from a groove portion provided at the summit portion of the deck plate.

[0012] In the present invention, it is preferable that the reinforcing bar support is formed by bending a metal wire of the bridge portion.

[0013] In the present invention, it is preferable that the reinforcing bar receiver has an arm portion that holds the reinforcing bar in a clamped state by elastic deformation of the metal wire.

[0014] The spacer with reinforcing bar holder of the present invention comprises a spacer that is attached or placed on a deck plate and has a flat bridge section and legs that are connected to the bridge section and stand up, and a reinforcing bar holder that is fixed integrally with the bridge section and holds the reinforcing bar so that the reinforcing bar can be placed against the bridge section.

[0015] The deck plate with spacers of the present invention comprises a deck plate made of corrugated steel plate having a corrugated portion with a cross-sectional corrugated shape in which peaks and valleys are alternately connected via inclined portions, a spacer which is assembled by engaging with the inclined portions of the deck plate and has a bridge portion opposite the peaks and legs connected to the bridge portion and arranged so as to be engageable with the inclined portions, and a reinforcing bar receiver which is fixed integrally with the bridge portion to hold the reinforcing bar so that the reinforcing bar can be placed against the bridge portion.

[0016] In the deck plate with spacers of the present invention, it is preferable that the reinforcing bar is held in the reinforcing bar receiver.

[0017] The composite slab of the present invention comprises a deck plate made of corrugated steel plate having a corrugated portion with a cross-sectional corrugated shape in which peaks and valleys are alternately connected via inclined portions, a spacer which is assembled by engaging with the inclined portions of the deck plate and has a bridge portion opposite the peaks and legs connected to the bridge portion and arranged so as to be engageable with the inclined portions, a reinforcing bar receiver which is fixed integrally with the bridge portion and holds the reinforcing bar so that the reinforcing bar can be placed against the bridge portion, a reinforcing bar held in the reinforcing bar receiver, and concrete which has been poured on the upper surface of the deck plate and hardened. Effect of the Invention

[0018] According to the present invention, it is possible to realize a spacer with reinforcing bar support, a deck plate with spacer, and a composite slab which are simply constructed yet have excellent workability. [Brief description of the drawings]

[0019] [Figure 1] 1 is a schematic perspective view showing an external configuration of a deck plate with spacers according to a first embodiment of the present invention. FIG. [Diagram 2] 1 is a front view showing a configuration of a deck plate with spacers in a first embodiment of the present invention. FIG. [Diagram 3] 1 is a cross-sectional view showing a configuration of a deck plate in a first embodiment of the present invention. [Figure 4] 1 is a perspective view showing the external configuration of a reinforcing bar support spacer according to a first embodiment of the present invention; [Diagram 5] 1A and 1B are a front view and a side view of a reinforcing bar support spacer according to a first embodiment of the present invention. [Figure 6] 1A and 1B are a front view and a top view showing the configuration of a first support leg and a second support leg that form a spacer with a reinforcing bar support in the first embodiment of the present invention. [Figure 7] 1A and 1B are a front view and a top view showing a state before a first support leg and a second support leg that form a spacer with reinforcing bar support in a first embodiment of the present invention are welded together. [Figure 8] 3A and 3B are a front view and a top view showing a state after a first support leg and a second support leg that form a spacer with reinforcing bar support in the first embodiment of the present invention have been welded together. [Figure 9] 1 is a front view showing a state in which spacer-equipped deck plates are stacked in the first embodiment of the present invention. FIG. [Figure 10A] FIG. 4 is a front view showing a configuration of a modified example of the reinforcing bar support spacer in the first embodiment of the present invention. [Figure 10B] FIG. 11 is a front view showing a state in which configurations of modified examples of the reinforcing bar support spacer in the first embodiment of the present invention are stacked. [Figure 11] FIG. 11 is a perspective view showing the external configuration of a deck plate with spacers in a second embodiment of the present invention. [Figure 12] FIG. 11 is a front view showing the configuration of a spacer-equipped deck plate in a second embodiment of the present invention. [Figure 13] FIG. 11 is a front view of a reinforcing bar support spacer according to a second embodiment of the present invention. [Figure 14] FIG. 11 is a perspective view showing the external configuration of a deck plate with spacers in a third embodiment of the present invention. [Figure 15] FIG. 11 is a front view showing the configuration of a spacer-equipped deck plate in a third embodiment of the present invention. [Figure 16] FIG. 13 is a front view of a reinforcing bar support spacer according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] (1) First embodiment Hereinafter, the configuration of the deck plate with spacers according to the first embodiment of the present invention will be described in detail with reference to Figs. 1 to 10B. Here, Fig. 1 is a schematic perspective view showing the external configuration of the deck plate with spacers according to the first embodiment of the present invention. Fig. 2 is a front view showing the configuration of the deck plate with spacers according to the first embodiment of the present invention. Fig. 3 is a cross-sectional view showing the configuration of the deck plate according to the first embodiment of the present invention. Fig. 4 is a perspective view showing the external configuration of the spacer with reinforcing bar support according to the first embodiment of the present invention. Fig. 5 is a front view and a side view of the spacer with reinforcing bar support according to the first embodiment of the present invention. Fig. 6 is a front view and a top view showing the configuration of the first support leg and the second support leg forming the spacer with reinforcing bar support according to the first embodiment of the present invention. Fig. 7 is a front view and a top view showing the state before welding the first support leg and the second support leg forming the spacer with reinforcing bar support according to the first embodiment of the present invention. Fig. 8 is a front view and a top view showing the state after welding the first support leg and the second support leg forming the spacer with reinforcing bar support according to the first embodiment of the present invention. Fig. 9 is a front view showing a state in which spacer-equipped deck plates according to the first embodiment of the present invention are stacked. Fig. 10A is a front view showing a configuration of a modified example of the spacer with reinforcing bar support according to the first embodiment of the present invention. Fig. 10B is a front view showing a state in which the configuration of a modified example of the spacer with reinforcing bar support according to the first embodiment of the present invention is stacked.

[0021] As shown in Figures 1 and 2, the deck plate with spacer 100 consists of a deck plate 20 and a spacer with rebar support 30, and the deck plate 20 is bridged between beams (not shown) made of, for example, H-shaped steel, which are arranged opposite each other.

[0022] As shown in Figure 3, the deck plate 20 is formed by roll forming or the like of a thin steel plate that has been subjected to a surface treatment such as zinc plating, and has a peak portion 21 having a flat surface located at the peak portion, a pair of valley bottom portions 22 having flat surfaces parallel or approximately parallel to peak portion 21 and located at the valley bottom portion, and a pair of inclined portions 23 that connect peak portion 21 and valley bottom portion 22 and have surfaces inclined at a predetermined angle.

[0023] In this case, the deck plate 20 is used by connecting multiple ends of a single plate consisting of one peak portion 21, a pair of valley bottom portions 22, and a pair of inclined portions 23 not only in the longitudinal direction but also in the lateral direction.

[0024] The deck plate 20 as a single plate has a corrugated portion 24 having a corrugated cross section made up of one peak portion 21, a pair of valley bottom portions 22, and a pair of inclined portions 23. However, this is not limited to this, and the deck plate 20 as a single plate may have a corrugated cross section made up of two pairs of valley bottom portions 22 and two corrugated portions 24 made up of two peak portions 21 and two pairs of inclined portions 23. Furthermore, the deck plate 20 may be subjected to so-called end-closed processing on both ends in the longitudinal direction.

[0025] A single groove 21m is formed in the peak portion 21 of the deck plate 20, which is recessed slightly downward along the longitudinal direction and is formed approximately in the center of the peak portion 21 in order to improve the strength of the peak portion 21. Note that the number of grooves 21m formed in the peak portion 21 is not limited to one, and any other number of grooves may be formed.

[0026] Incidentally, it is not necessarily required that the groove portion 21m is formed in the peak portion 21 of the deck plate 20. The groove portion 21m is a groove when viewed from above the peak portion 21, but is also a convex portion protruding downward when viewed from below the peak portion 21. Therefore, the groove portion 21m may also be referred to as the convex portion 21m in some cases.

[0027] At the lower end of a pair of inclined portions 23 of the deck plate 20, near the portion where the inclined portions 23 and the valley bottom 22 are connected, a protrusion 23c is formed which protrudes slightly in a V-shaped cross section toward the outside of the corrugated portion 24 (one peak portion 21, a pair of valley bottoms 22 and a pair of inclined portions 23), i.e., toward the outside opposite the inner space formed by the corrugated portion 24.

[0028] The protrusion 23c of this inclined portion 23 is an engagement portion used when integrally attaching the reinforcing bar support spacer 30 described later to the deck plate 20, and its shape is not limited to a V-shaped cross section but may be any shape that allows for engagement.

[0029] In addition, the protrusion 23c is formed near the portion where the inclined portion 23 and the valley bottom 22 are connected, but this is not limited to this, and it may be formed near the portion where the inclined portion 23 and the peak portion 21 are connected, or near the middle of the inclined portion 23.

[0030] 1 and 2, reinforcing bar support spacers 30 are attached integrally to the deck plate 20. For example, in this case, the reinforcing bar support spacers 30 are attached to the deck plate 20 at regular intervals.

[0031] 4 to 8, the spacer with reinforcing bar support 30 has a first support leg 31 forming one leg and a second support leg 36 forming the other leg, and the first support leg 31 and the second support leg 36 are integrated by welding. The spacer with reinforcing bar support 30 does not function as a spacer until the first support leg 31 and the second support leg 36 are integrated.

[0032] As shown in Figures 5 and 6, the first support leg 31 is a rod-shaped member formed in a roughly L-shape overall along the peak portion 21 and inclined portion 23 of the deck plate 20, and is formed by bending a steel bar (reinforcing bar).

[0033] The first support leg 31 has a rod-shaped leg portion 32 that is arranged to be able to engage with the inclined portion 23 of the deck plate 20, and a straight-line bridge portion 33 that is connected to the leg portion 32 and is arranged opposite the summit portion 21 of the deck plate 20.

[0034] The leg portion 32 of the first support leg 31 is inclined at an angle so as to be parallel to the inclined portion 23 of the deck plate 20, and is formed longer than the inclined portion 23. The leg portion 32 has a bent portion 32c in which the tip portion of the rod-shaped member is bent at a predetermined angle, and is capable of engaging with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0035] The bridge portion 33 of the first support leg 31 is a rod-shaped member formed parallel to and shorter than the peak portion 21 of the deck plate 20. On the side of the bridge portion 33 not connected to the leg portion 32, a reinforcing bar holding portion 34 is provided, which is a rod-shaped member formed into a substantially trapezoidal shape for strength.

[0036] The reinforcing bar holding portion 34 is formed by an upper base portion 34a corresponding to the upper base of the trapezoid, a lower base portion 34b corresponding to the lower base, and oblique side portions 34c and 34d corresponding to the oblique sides, and the tip side of the oblique side portion 34d protrudes upward from the upper base portion 34a. Here, the length of the protruding tip of the oblique side portion 34d is the height required to clamp and hold the reinforcing bar 50, and is at least the same as or larger than the diameter of the reinforcing bar 50.

[0037] The reinforcing bar holding portion 34 has a foot portion 34t that is bent into a generally triangular shape in plan view as part of the lower base portion 34b of the reinforcing bar holding portion 34. The foot portion 34t is a portion that is perpendicular to the longitudinal direction of the bridge portion 33, and that protrudes in a direction parallel to the crest portion 21 of the deck plate 20 and along the longitudinal direction of the crest portion 21. In other words, the foot portion 34t is a portion that is placed on the flat surface of the crest portion 21 when the spacer with reinforcing bar support 30 is assembled to the deck plate 20.

[0038] Moreover, the reinforcing bar holding portion 34 has a tip portion 34s in which the tip side of the oblique side portion 34d forming the reinforcing bar holding portion 34 is bent at approximately 90 degrees toward a direction perpendicular to the longitudinal direction of the bridge portion 33. The tip portion 34s of the reinforcing bar holding portion 34 is used as an arm portion that clamps and holds the reinforcing bar 50. The reinforcing bar 50 is, for example, a deformed reinforcing bar obtained by rolling steel and providing uneven protrusions called ribs or nodes on the surface. However, the reinforcing bar 50 is not limited to this, and various other shapes and types of reinforcing bars such as round steel and square steel may be used.

[0039] The second support leg 36, like the first support leg 31, is a rod-shaped member formed in a roughly L-shape overall along the peak portion 21 and inclined portion 23 of the deck plate 20, and is formed by bending a bar steel (reinforcing bar).

[0040] The second support leg 36 has a rod-shaped leg portion 37 that is capable of engaging with the inclined portion 23 of the deck plate 20, and a straight-line bridge portion 38 that is connected to the leg portion 37 and is arranged opposite the summit portion 21 of the deck plate 20.

[0041] The leg portion 37 of the second support leg 36 is inclined at an angle so as to be parallel to the inclined portion 23 of the deck plate 20, and is formed longer than the inclined portion 23. The leg portion 37 has a bent portion 37c in which the tip portion of the rod-shaped member is bent at a predetermined angle, and is capable of engaging with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0042] As such, leg portion 37 of second support leg 36 has basically the same structure as leg portion 32 of first support leg 31, so that leg portions 32 and 37 face each other in rebar support spacer 30 and form an approximately V-shape when viewed from the front.

[0043] The bridge portion 38 of the second support leg 36 is a rod-shaped member formed parallel to and shorter than the peak portion 21 of the deck plate 20. On the side of the bridge portion 38 not connected to the leg portion 37, a reinforcing bar holding portion 39 is provided, which is a rod-shaped member formed into a substantially trapezoidal shape.

[0044] The reinforcing bar holding portion 39 is formed by an upper base portion 39a corresponding to the upper base of the trapezoid, a lower base portion 39b corresponding to the lower base, and hypotenuse portions 39c and 39d corresponding to the oblique sides, and the tip side of the hypotenuse portion 39d protrudes upward from the upper base portion 39a. In this case, too, the protruding length of the hypotenuse portion 39d is the height required to clamp and hold the reinforcing bar 50, and is at least the same as or larger than the diameter of the reinforcing bar 50.

[0045] Here, the reinforcing bar holding portion 39 of the second support leg 36 has a trapezoidal shape larger than the reinforcing bar holding portion 34 of the first support leg 31, and specifically, the upper base portion 39a and the lower base portion 39b are longer than the upper base portion 34a and the lower base portion 34b of the reinforcing bar holding portion 34. However, the inclination angle of the oblique sides 39c, 39d and the length by which they protrude upward from the upper base portion 39a are the same as those of the first support leg 31.

[0046] The reinforcing bar holding portion 39 has a foot portion 39t bent into a generally triangular shape in plan view as a part of the reinforcing bar holding portion 39. The foot portion 39t is a portion that is perpendicular to the longitudinal direction of the bridge portion 38, parallel to the crest portion 21 of the deck plate 20, and protrudes in a direction along the longitudinal direction of the crest portion 21. In other words, the foot portion 39t is a portion that is placed on the flat surface of the crest portion 21 when the spacer with reinforcing bar support 30 is assembled to the deck plate 20.

[0047] The foot 39t of the reinforcing bar holding portion 39 is provided so as to face in the opposite direction to the foot 34t of the reinforcing bar holding portion 34 of the first support leg 31. As a result, when the spacer with reinforcing bar support 30 is assembled to the deck plate 20, the foot 34t of the reinforcing bar holding portion 34 of the first support leg 31 and the foot 39t of the reinforcing bar holding portion 39 of the second support leg 36 maintain a stable state without causing the spacer to fall over.

[0048] Further, the reinforcing bar holding portion 39 has a tip portion 39s formed by bending the tip side of the oblique side portion 39d forming the reinforcing bar holding portion 39 at approximately 90 degrees toward a direction perpendicular to the longitudinal direction of the bridge portion 38. The tip portion 39s of the reinforcing bar holding portion 39 is used as an arm portion that clamps and holds the reinforcing bar 50, similar to the tip portion 34s of the reinforcing bar holding portion 34.

[0049] In this case, the tip 39s of the rebar holding portion 39 and the tip 34s of the rebar holding portion 34 are bent in opposite directions, and the total length of the tip 34s and the tip 39s along the longitudinal direction of the peak portion 21 of the deck plate 20 is the distance of the range for clamping and holding the rebar 50. Incidentally, the tip 34s and the tip 39s may be bent by 90 degrees or less so that they approach each other.

[0050] As shown in Figure 7, the first support leg 31 and the second support leg 36 configured in this manner firmly clamp the reinforcing bar 50 using the tip portion 34s of the reinforcing bar holding portion 34 and the tip portion 39s of the reinforcing bar holding portion 39, bringing them close to a distance that can be held, and are positioned facing each other with the bridge portion 33 of the first support leg 31 and the bridge portion 38 of the second support leg 36 overlapping.

[0051] Here, as shown in FIG. 8, the spacing at which the reinforcing bar 50 can be firmly clamped and held by the tip 34s of the reinforcing bar holding portion 34 and the tip 39s of the reinforcing bar holding portion 39 is a spacing at which the distance L1 between the tip 34s and the tip 39s is the same as or slightly smaller than the diameter of the reinforcing bar 50.

[0052] Then, the bridge portion 33 of the first support leg 31 and the bridge portion 38 of the second support leg 36 are arranged facing each other so as to have a distance that allows the reinforcing bar 50 to be firmly clamped and held, and then the bridge portion 33 of the first support leg 31 and the bridge portion 38 of the second support leg 36 are welded at a location P1 where they come into contact. At the same time, the first support leg 31 and the second support leg 36 are welded at a location P2 where the lower base portion 34b of the reinforcing bar holding portion 34 of the first support leg 31 and the lower base portion 39b of the reinforcing bar holding portion 39 of the second support leg 36 come into contact. As a result, the first support leg 31 and the second support leg 36 are integrated to form the spacer with reinforcing bar support 30.

[0053] Thus, the spacer with reinforcing bar holder 30 can form a reinforcing bar holder 40 capable of clamping and holding the reinforcing bar 50 between the tip end 34s of the reinforcing bar holding portion 34 of the first support leg 31 and the tip end 39s of the reinforcing bar holding portion 39 of the second support leg 36.

[0054] In this case, the reinforcing bar support 40 of the spacer 30 with reinforcing bar support is formed at a position shifted a predetermined distance from the groove portion 21m provided in the center of the summit portion 21 of the deck plate 20 so that it does not face the groove portion 21m.

[0055] 9, even when multiple deck plates 100 with spacers are stacked vertically, the convex portion 21m formed on the peak portion 21 of the deck plate 20 and the reinforcing bar receiver 40 of the spacer with reinforcing bar receiver 30 are not spatially opposed to each other. Thus, the height of multiple stacked deck plates 100 with spacers can be kept as low as possible, allowing for efficient transportation.

[0056] In the above configuration, the spacer-equipped deck plate 100 has the reinforcing bar support spacer 30 attached integrally to the deck plate 20. To attach the reinforcing bar support spacer 30 to the deck plate 20, it is sufficient to engage the bent portion 32c of the leg 32 of the first support leg 31 with the protrusion 23c of the inclined portion 23 of the deck plate 20, and to engage the bent portion 37c of the leg 37 of the second support leg 36 with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0057] At this time, the spacer with reinforcing bar support 30 is easily attached to the deck plate 20, and since the foot 34t of the reinforcing bar holding portion 34 and the foot 39t of the reinforcing bar holding portion 39 are placed on the flat surface of the peak portion 21 of the deck plate 20, the spacer is maintained in a stable state without falling over.

[0058] The spacer with reinforcing bar holder 30 can hold the reinforcing bar 50 in the reinforcing bar holder 40 (tip portion 34s and tip portion 39s) which is located above the upper bottom portion 34a of the reinforcing bar holding portion 34 and the upper bottom portion 39a of the reinforcing bar holding portion 39, and therefore can hold the reinforcing bar 50 at a position a predetermined distance above the peak portion 21 of the deck plate 20.

[0059] When a reinforcing bar 50 is pressed into the reinforcing bar holder 40 formed by the tip 34s of the reinforcing bar holding portion 34 and the tip 39s of the reinforcing bar holding portion 39 of the spacer with reinforcing bar holder 30, the elastic deformation of the tip 34s and the tip 39s firmly clamps the reinforcing bar 50 and holds it in place so that it will not fall out.

[0060] In this manner, the deck plate with spacers 100 can have reinforcing bars 50 attached to the deck plate 20 in advance via the reinforcing bar receivers 40 of the spacers with reinforcing bar receivers 30 .

[0061] According to the above configuration, the deck plate with spacer 100 can be integrated by attaching the spacer with reinforcing bar holder 30 to the deck plate 20, so that a state can be created in which the reinforcing bar 50 is pre-held in the reinforcing bar holder 40 of the spacer with reinforcing bar holder 30.

[0062] As a result, the deck plate with spacers 100 can reduce the effort and time required for workers to attach the spacers and reinforcing steel bars 50 to the deck plate 20 at the construction site, significantly improving workability.

[0063] As shown in Fig. 10A, a spacer with reinforcing bar support 30S may be formed instead of the spacer with reinforcing bar support 30 in the first embodiment. For example, if the protrusion 23c of the inclined portion 23 of the deck plate 20 is formed near the middle of the inclined portion 23, the bent portions 32z, 37z may be formed near the center of the leg 32 of the first support leg 31 and the leg 37 of the second support leg 36. This allows a plurality of deck plates with spacers 100 to be stacked together and transported in a more stable state, as shown in Fig. 10B.

[0064] (2) Second embodiment The configuration of the deck plate with spacers according to the second embodiment of the present invention will be described in detail below with reference to Fig. 11 to Fig. 13. Fig. 11 is a perspective view showing the external configuration of the deck plate with spacers according to the second embodiment of the present invention. Fig. 12 is a front view showing the configuration of the deck plate with spacers according to the second embodiment of the present invention. Fig. 13 is a front view of a spacer with reinforcing bar support according to the second embodiment of the present invention.

[0065] As shown in Figure 11, in which parts corresponding to those in Figure 1 are given the same reference numerals, a spacer-equipped deck plate 200 according to the second embodiment comprises a deck plate 20 and a spacer 60 with rebar supports, with the deck plate 20 spanning between beams (not shown) made of, for example, H-shaped steel, which are arranged opposite each other. Here, the configuration of the deck plate 20 is the same as that described in the first embodiment, and therefore description thereof will be omitted.

[0066] The spacer with reinforcing bar support 60 has a spacer 70 and a reinforcing bar support 75, with the reinforcing bar support 75 fixed integrally to the spacer 70. The spacer 70 is formed by bending a steel bar (reinforcing bar) and has a trapezoidal shape with no bottom base that matches the shape of the deck plate 20. The spacer 70 is assembled integrally by engaging with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0067] As shown in Figures 12 and 13, the spacer 70 has a rod-shaped, straight bridge portion 71 that is arranged parallel to and faces the summit portion 21 of the deck plate 20, and a rod-shaped leg portion 72 that is connected to the bridge portion 71 and parallel to the inclined portion 23 of the deck plate 20.

[0068] The bridge portion 71 of the spacer 70 is a rod-shaped portion formed parallel to and shorter than the peak portion 21 of the deck plate 20. The bridge portion 71 of the spacer 70 is disposed so as to face the peak portion 21 of the deck plate 20 when the spacer with reinforcing bar support 60 is attached to the deck plate 20.

[0069] The pair of legs 72 of the spacer 70 are rod-shaped portions that extend outward and downward from both side ends of the bridge portion 71 so as to be approximately parallel to the inclined portion 23 of the deck plate 20. The legs 72 have bent portions 72c whose tip portions are bent at a predetermined angle so as to be engageable with the protrusions 23c of the inclined portion 23 of the deck plate 20.

[0070] Furthermore, the leg 72 is formed to be longer than the inclined portion 23 of the deck plate 20. Therefore, when the bent portion 72c of the leg 72 engages with and locks into the protrusion 23c of the inclined portion 23 of the deck plate 20, the bridge portion 71 is positioned at a position spaced a predetermined distance above the peak portion 21 of the deck plate 20.

[0071] Therefore, a space is formed between the bridge portion 71 of the spacer 70 and the groove portion 21m of the peak portion 21 of the deck plate 20, so that a worker can insert his / her fingers into the space during construction. This allows a worker to use the bridge portion 71 of the spacer 70 as a handle when carrying the deck plate 200 with spacers.

[0072] Furthermore, because the legs 72 of the spacer 70 are partially in contact with the upper end of the inclined portion 23 of the deck plate 20, the spacer with reinforcing bar support 30 is maintained without falling over when it is attached integrally to the deck plate 20. Even if the spacer with reinforcing bar support 30 is slightly inclined, the bridge portion 71 of the spacer 70 comes into contact with the peak portion 21 of the deck plate 20, preventing the spacer from falling over.

[0073] Furthermore, a reinforcing bar receiver 75 is fixed by welding or the like to the bridge portion 71 of the spacer 70 at the center of the bridge portion 71, i.e., at a position offset from the groove portion 21m. The reinforcing bar receiver 75 is welded to the spacer 70 with its bottom in contact with the peak portion 21 of the deck plate 20. However, this is not limited to this, and the bottom of the reinforcing bar receiver 75 may be welded to the spacer 70 in a state not in contact with the peak portion 21 of the deck plate 20.

[0074] The reinforcing bar receiver 75 is formed to have a generally U-shaped cross section by bending a bar steel (reinforcing bar) that is roughly the same thickness as the spacer 70 or slightly thinner. The reinforcing bar receiver 75 has a reinforcing bar holding width that is the same as or slightly smaller than the diameter of the reinforcing bar 50, so that the reinforcing bar receiver 75 can firmly hold the reinforcing bar 50 by fitting it in place.

[0075] In the above configuration, when the spacer 60 with rebar support is attached integrally to the deck plate 20, the deck plate with spacer 200 can be integrated with the deck plate 20 in a stable state without falling over simply by engaging the bent portion 72c of the leg 72 of the spacer 70 with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0076] When the spacer with reinforcing bar support 60 is attached to the deck plate 20 and a reinforcing bar 50 is pressed into the reinforcing bar support 75 of the spacer with reinforcing bar support 60, the deck plate with spacer 200 can firmly hold the reinforcing bar 50.

[0077] In this manner, the deck plate with spacers 200 can have reinforcing bars 50 attached to the deck plate 20 in advance via the reinforcing bar receivers 75 of the spacers with reinforcing bar receivers 60 .

[0078] According to the above configuration, the deck plate with spacer 200 can be integrated by attaching the spacer with reinforcing bar holder 60 to the deck plate 20, so that the reinforcing bar 50 can be held in advance in the reinforcing bar holder 75 of the spacer with reinforcing bar holder 60.

[0079] As a result, the deck plate with spacers 200 can reduce the effort and time required for workers to attach the spacers and reinforcing steel bars 50 to the deck plate 20 at the construction site, significantly improving workability.

[0080] (3) Third embodiment The configuration of the deck plate with spacers according to the third embodiment of the present invention will be described in detail below with reference to Figs. 14 to 16. Fig. 14 is a perspective view showing the external configuration of the deck plate with spacers according to the third embodiment of the present invention. Fig. 15 is a front view showing the configuration of the deck plate with spacers according to the third embodiment of the present invention. Fig. 16 is a front view of a spacer with reinforcing bar support according to the third embodiment of the present invention.

[0081] As shown in Figure 14, in which parts corresponding to those in Figure 11 are given the same reference numerals, a spacer-equipped deck plate 300 according to the third embodiment comprises a deck plate 20 and a spacer with rebar support 90, with the deck plate 20 spanning between beams (not shown) made of, for example, H-shaped steel, arranged opposite each other. Here, the configuration of the deck plate 20 is the same as that described in the first and second embodiments, and therefore description thereof will be omitted.

[0082] 15 and 16, the spacer with reinforcing bar support 90 is formed by bending a steel bar (reinforcing bar) and has a generally trapezoidal shape with no lower base portion that matches the shape of the deck plate 20. The spacer with reinforcing bar support 90 is assembled integrally by engaging with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0083] The spacer 90 with rebar support has a rod-shaped bridge portion 91 arranged parallel to and facing the summit portion 21 of the deck plate 20, and a rod-shaped leg portion 92 connected to the bridge portion 91 and parallel to the inclined portion 23 of the deck plate 20.

[0084] The bridge portion 91 of the spacer 90 with reinforcing bar support has a flat portion 91a parallel to the peak portion 21 of the deck plate 20, and a reinforcing bar support portion 95 that protrudes generally upward in the central portion of the bridge portion 91.

[0085] When the spacer with reinforcing bar support 90 is attached to the deck plate 20, the bridge portion 91 is placed on the flat portion 91a of the summit portion 21 of the deck plate 20, so that the spacer with reinforcing bar support 90 can be stabilized without falling over.

[0086] The reinforcing bar receiving portion 95 is a part of the reinforcing bar receiving spacer 90, and is integrated with the flat portion 91a of the bridge portion 91 of the reinforcing bar receiving spacer 90. The reinforcing bar receiving portion 95 is substantially trapezoidal in shape with no lower base portion, and has a pair of hypotenuse portions 96 corresponding to the hypotenuse of the trapezoid connected to the ends of the flat portion 91a of the bridge portion 91, a pair of upper base portions 97 connected to the upper ends of the hypotenuse portions 96 and extending horizontally toward the center of the flat portion 91a of the bridge portion 91, and a reinforcing bar holding portion 98 recessed in an arc shape from the ends of the upper base portions 97.

[0087] A pair of oblique side portions 96 in the reinforcing bar receiver 95 are formed symmetrically facing each other in a V-shape. The reinforcing bar holding portion 98 in the reinforcing bar receiver 95 is formed to have a diameter equal to or slightly larger than the outer diameter of the reinforcing bar 50. However, this is not limiting, and the reinforcing bar holding portion 98 may have an opening into which the reinforcing bar 50 is inserted slightly smaller than the outer diameter of the reinforcing bar 50. In this case, although the reinforcing bar 50 needs to be pushed into the reinforcing bar holding portion 98, it is possible to easily prevent the reinforcing bar 50 from slipping out.

[0088] The length of the oblique side portion 96 of the reinforcing bar support 95 is set taking into consideration the space required between the top portion 21 of the deck plate 20 and the spacer with reinforcing bar support 90 when it is attached to the deck plate 20.

[0089] The legs 92 of the spacer with rebar support 90 are rod-shaped portions that extend outward and downward from both side ends of the bridge section 91 so as to be approximately parallel to the inclined section 23 of the deck plate 20. The legs 92 have bent portions 92c whose tip portions are bent at a predetermined angle so as to be able to engage with the protrusions 23c of the inclined section 23 of the deck plate 20.

[0090] Furthermore, the length of the leg 92 is formed to be slightly longer than the inclined portion 23 of the deck plate 20. When the bent portion 92c of the leg 92 engages with and locks into the protrusion 23c of the inclined portion 23 of the deck plate 20, the leg 92 partially abuts against the upper end of the inclined portion 23 of the deck plate 20.

[0091] For this reason, the spacer with reinforcing bar support 90 is maintained without falling over when it is attached integrally to the deck plate 20. Even if the spacer with reinforcing bar support 90 tilts slightly, the flat portion 91a of the bridge portion 91 comes into contact with the peak portion 21 of the deck plate 20, preventing the spacer from falling over.

[0092] Furthermore, when the spacer with rebar support 90 is attached to the deck plate 20, a space S1 is formed between the upper base portion 97 of the rebar support 95 and the summit portion 21 of the deck plate 20, so that a worker can insert his or her fingers into that space during construction.

[0093] Similarly, a space S2 is formed between the reinforcing bar holding portion 98 of the reinforcing bar receiver 95 and the groove portion 21m of the peak portion 21 of the deck plate 20, so that a worker can insert his or her fingers into the space during construction. This allows a worker to use the bridge portion 91 of the spacer with reinforcing bar receiver 90 as a handle when carrying the deck plate with spacer 300.

[0094] In the above configuration, when the spacer 90 with reinforcing bar support is attached integrally to the deck plate 20, the deck plate with spacer 300 can be integrated with the deck plate 20 in a stable state without falling over simply by engaging the bent portion 92c of the leg 92 with the protrusion 23c of the inclined portion 23 of the deck plate 20.

[0095] When the spacer with reinforcing bar support 90 is attached to the deck plate 20, the spacer with reinforcing bar support 90 is integrally provided with a reinforcing bar support 95, so that the reinforcing bar support portion 98 of the reinforcing bar support 95 can hold the reinforcing bar 50.

[0096] In this manner, the deck plate with spacers 300 can have reinforcing bars 50 attached to the deck plate 20 in advance via the reinforcing bar receivers 95 of the spacers with reinforcing bar receivers 90 .

[0097] The spacer 90 with reinforcing bar holder of the spacer-equipped deck plate 300 can be formed by bending a single steel bar (reinforcing bar), and the reinforcing bar holder 95 can be formed at the same time. This eliminates the need to separately form and weld the reinforcing bar holder 95, and allows for a simplified configuration with fewer parts.

[0098] According to the above configuration, the deck plate with spacer 300 can be integrated by attaching the spacer with reinforcing bar holder 90 to the deck plate 20, so that the reinforcing bar 50 can be held in advance in the reinforcing bar holder 95 of the spacer with reinforcing bar holder 90.

[0099] As a result, the deck plate with spacers 300 can reduce the effort and time required for workers to attach the spacers and reinforcing steel bars 50 to the deck plate 20 at the construction site, significantly improving workability.

[0100] (4) Other embodiments In the above-mentioned first to third embodiments, the application target is a deck plate 20 made of corrugated steel plate having a corrugated portion 24 with a cross-sectional corrugated shape. However, the present invention is not limited to this, and the application target may be a steel plate having a flat surface other than a deck plate made of corrugated steel plate, so long as the spacer is attached or placed on a flat surface and has a flat bridge portion and legs connected to the bridge portion and standing up.

[0101] In addition, those skilled in the art can appropriately modify the spacer deck plates 100, 200, and 300 of the present invention in accordance with conventional knowledge. As long as the configuration of the present invention is still provided even after such modifications, they are of course included in the scope of the present invention. [Explanation of symbols]

[0102] 100, 200, 300... deck plate with spacers, 20... deck plate, 21... summit portion, 22... valley bottom portion, 23... sloping portion, 24... corrugated portion, 30, 60, 90... spacers with rebar support, 31... first support leg, 33, 71, 91... bridge portion, 32, 72, 92... leg portion, 36... second support leg, 40, 75, 95... rebar support, 50... rebar.

Claims

1. a spacer which is assembled by engaging with the inclined portion of a deck plate made of a corrugated steel plate having a corrugated section in which peaks and valleys are alternately connected via inclined portions, the spacer having a bridge portion disposed opposite the peaks and spaced apart above the peaks, and a leg portion connected to the bridge portion and capable of engaging with the inclined portion; A reinforcing bar receiver that is fixed integrally with the bridge portion to hold the reinforcing bar so that the reinforcing bar can be placed on the bridge portion; A reinforcing bar holding portion is provided on the side of the bridge portion that is not connected to the leg portion, The reinforcing bar holding portion has an upper base portion, a lower base portion, and a hypotenuse portion connecting the upper base portion and the lower base portion, The lower base portion is perpendicular to the longitudinal direction of the bridge portion, protrudes parallel to the peak portion and along the longitudinal direction of the peak portion, and is provided with a foot portion that is placed on the peak portion.

2. The lower base portion has two of the feet, The feet protrude in opposite directions. The reinforcing bar support spacer according to claim 1.

3. The reinforcing bar support is provided at a position of the bridge portion shifted from a groove portion provided at the summit portion of the deck plate, A spacer with a reinforcing bar support according to claim 1 or 2.

4. The reinforcing bar support is formed by bending the metal wire of the bridge portion. A spacer with a reinforcing bar support according to any one of claims 1 to 3.

5. The reinforcing bar receiver has an arm portion that holds the reinforcing bar in a clamped state by elastic deformation of the metal wire. A spacer with a reinforcing bar support according to claim 4.

6. The reinforcing bar retaining portion is formed by bending a metal wire of the bridge portion. A spacer with a reinforcing bar support according to any one of claims 1 to 5.

7. A deck plate made of a corrugated steel plate having a corrugated portion having a cross-sectional corrugated shape in which peaks and valleys are alternately connected via inclined portions; a spacer that is assembled by engaging with the inclined portion of the deck plate, the spacer including a bridge portion that faces the peak portion and is spaced upward from the peak portion, and a leg portion that is connected to the bridge portion and is provided so as to be engageable with the inclined portion; A reinforcing bar receiver that is fixed integrally with the bridge portion to hold the reinforcing bar so that the reinforcing bar can be placed on the bridge portion; A reinforcing bar holding portion is provided on the side of the bridge portion that is not connected to the leg portion, The reinforcing bar holding portion has an upper base portion, a lower base portion, and a hypotenuse portion connecting the upper base portion and the lower base portion, The lower bottom portion is perpendicular to the longitudinal direction of the bridge portion, and is provided with a foot portion that protrudes in a direction parallel to and along the longitudinal direction of the peak portion and is placed on the peak portion.

8. The lower base portion has two of the feet, The feet are provided facing in opposite directions. The deck plate with spacers according to claim 7.

9. The reinforcing bar is held in the reinforcing bar receiver. The deck plate with spacers according to claim 7 or 8.

10. A deck plate made of a corrugated steel plate having a corrugated portion having a cross-sectional corrugated shape in which peaks and valleys are alternately connected via inclined portions; a spacer that is assembled by engaging with the inclined portion of the deck plate, the spacer including a bridge portion that faces the peak portion and is spaced upward from the peak portion, and a leg portion that is connected to the bridge portion and is provided so as to be engageable with the inclined portion; A reinforcing bar receiver that is fixed integrally with the bridge portion to hold the reinforcing bar so that the reinforcing bar can be placed on the bridge portion; A reinforcing bar holding portion provided on a side of the bridge portion that is not connected to the leg portion; A reinforcing bar held in the reinforcing bar receiver; and concrete poured onto the upper surface of the deck plate and hardened. The reinforcing bar holding portion has an upper base portion, a lower base portion, and a hypotenuse portion connecting the upper base portion and the lower base portion, A composite slab, wherein the lower base portion is perpendicular to the longitudinal direction of the bridge portion, and has a foot portion that protrudes in a direction parallel to and along the longitudinal direction of the peak portion and is placed on the peak portion.

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