JP7598262B2 - Spacer with rotation mechanism, deck plate with spacer and composite slab - Google Patents

Description

The present invention relates to a spacer with a rotation mechanism, a deck plate with a spacer, and a composite slab.

Traditionally, the standard method for floor slabs, which accounts for the majority of floor construction methods in steel-framed buildings, is a composite structure of deck plates and concrete, which can be realized with simple configuration and construction, and has excellent strength and toughness.

This type of deck composite slab has the advantage of being able to reduce the amount of rebar used compared to conventional reinforced concrete slabs, but it also has the disadvantage that the concrete is prone to cracking.

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.

In such composite slabs, to ensure a certain 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 placed on top of this spacer.

In recent years, composite deck slabs have been proposed in which reinforcing bars are added to reinforce the welded wire mesh placed on the deck plate via spacers (see, for example, Patent Document 1).

JP 2020-041348 A

However, in the composite deck slab of Patent Document 1, the process of adding reinforcing steel bars is complicated, and it is difficult to easily add reinforcing steel bars at the construction site.

The present invention has been made in consideration of the above points, and aims to provide a spacer with a rotation mechanism, a deck plate with spacer, and a composite slab that are simple in construction yet have excellent workability, allowing reinforcing bars to be installed easily, reliably, and with high precision.

In order to solve this problem, the spacer with a rotation mechanism of the present invention is assembled by engaging with the inclined portion of a deck plate made of corrugated steel plate having a corrugated cross-sectional shape in which peaks and valley bottoms are alternately connected via inclined portions, and is equipped with a bridge portion provided opposite the peaks and legs connected to the bridge portion and provided so as to be engageable with the inclined portion, and a rotation mechanism that holds a reinforcing bar against the bridge portion along the longitudinal direction of the peaks and can rotate in this held state in a horizontal direction parallel to the peaks or in a vertical direction perpendicular to the peaks.

In the present invention, it is preferable that the spacer further includes a reinforcing bar receiver that is fixed integrally with the bridge section to place reinforcing bars on the bridge section and is arranged parallel to the rotation mechanism section to hold the reinforcing bars.

In the present invention, it is preferable that the rotation mechanism is provided at a position of the bridge portion that is offset from the groove portion provided at the top portion of the deck plate.

The spacer with a rotation mechanism of the present invention is attached to or placed on a deck plate and includes a spacer having a flat bridge section and legs that connect to the bridge section and stand upright, and a rotation mechanism that holds reinforcing bars against the bridge section and can rotate in a horizontal direction parallel to the deck plate or a vertical direction perpendicular to the deck plate while holding the reinforcing bars.

The deck plate with spacers of the present invention comprises a deck plate made of corrugated steel plate having a corrugated section with a corrugated cross section in which peaks and valleys are alternately connected via inclined sections, a spacer which is assembled by engaging with the inclined sections of the deck plate and has a bridge section opposite the peaks and legs connected to the bridge section and engageable with the inclined sections, and a rotation mechanism which holds reinforcing bars against the bridge section along the longitudinal direction of the peaks and can rotate in this held state in a horizontal direction parallel to the peaks or in a vertical direction perpendicular to the peaks.

The composite slab of the present invention comprises a deck plate made of corrugated steel plate having a corrugated section with a corrugated cross section in which the peaks and valley bottoms are alternately connected via inclined sections, a spacer which is assembled by engaging with the inclined sections of the deck plate and has a bridge section that faces the peaks and legs that are connected to the bridge section and are provided so as to be engageable with the inclined sections, a rotation mechanism that holds reinforcing bars along the longitudinal direction of the peaks relative to the bridge section and can rotate in the horizontal direction parallel to the peaks or in the vertical direction perpendicular to the peaks while held in this state, reinforcing bars rotatably held in the rotation mechanism, and concrete that is poured onto the upper surface of the deck plate and solidified.

The present invention makes it possible to realize a spacer with a rotation mechanism, a deck plate with a spacer, and a composite slab that are simple in structure but have excellent workability and can install reinforcing bars easily, reliably, and with high precision.

1 is a schematic perspective view showing an overall configuration of a deck plate with spacers according to a first embodiment of the present invention; 1 is a schematic cross-sectional view showing an overall configuration of a deck plate with spacers in a first embodiment of the present invention. 1 is a schematic cross-sectional view showing a configuration of a spacer with a rotation mechanism according to a first embodiment of the present invention; FIG. 11 is a schematic perspective view showing a configuration of a spacer-equipped deck plate in a second embodiment of the present invention. 11 is a schematic cross-sectional view showing the overall configuration of a deck plate with spacers in a second embodiment of the present invention. FIG. 11 is a schematic cross-sectional view showing a configuration of a spacer with a rotation mechanism according to a second embodiment of the present invention. FIG.

(1) First embodiment The configuration of a spacer-equipped deck plate according to a first embodiment of the present invention will be described in detail below with reference to Fig. 1 to Fig. 3. Fig. 1 is a schematic perspective view showing the overall configuration of a spacer-equipped deck plate according to the first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing the overall configuration of a spacer-equipped deck plate according to the first embodiment of the present invention. Fig. 3 is a schematic cross-sectional view showing the configuration of a spacer with a rotation mechanism according to the first embodiment of the present invention.

As shown in FIG. 1, the deck plate with spacer 100 is constructed by integrating a deck plate 20, a spacer 30, and a spacer with a rotation mechanism 30S, and the deck plate 20 is spanned between beams, for example H-shaped steel, arranged opposite each other. The spacer with a rotation mechanism 30S has the same basic structure as the spacer 30, but differs in that it has a rotation mechanism 40, which will be described later.

As shown in FIG. 2, the deck plate 20 is a corrugated steel plate formed by pressing a thin steel plate or the like. The steel plate may be subjected to a surface treatment such as zinc plating. The deck plate 20 has a peak portion 21 with a flat surface located at the peak portion, a pair of valley bottom portions 22 with flat surfaces located at the valley bottom portion and parallel or approximately parallel to the peak portion 21, and a pair of inclined portions 23 that connect the peak portion 21 and the valley bottom portion 22 and have inclined surfaces inclined at a predetermined angle.

In this case, the deck plate 20 is formed by connecting multiple ends of a single plate, which consists of one peak portion 21, a pair of valley bottom portions 22, and a pair of inclined portions 23, in the longitudinal and lateral directions. In Figure 2, only the single plate of the deck plate 20 is shown.

The deck plate 20 has a corrugated section 24 with a corrugated cross section consisting of one peak 21, a pair of valley bottoms 22, and a pair of inclined sections 23. However, this is not limited to the above, and the deck plate 20 may have a corrugated cross section consisting of two pairs of valley bottoms 22, two peaks 21, and two pairs of inclined sections 23. Furthermore, the deck plate 20 may have end-closed processing on both ends in the longitudinal direction.

In order to improve the strength of the peak portion 21 of the deck plate 20, a single groove 21m is formed in the approximate center of the peak portion 21, which is slightly recessed downward along the longitudinal direction. 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. Incidentally, it is not necessarily necessary for the groove 21m to be formed in the peak portion 21 of the deck plate 20.

At the lower end of the pair of inclined portions 23 of the deck plate 20, near the portion where the inclined portion 23 and the valley bottom 22 are connected, a protrusion 23c is formed that protrudes slightly in a mountain-shaped cross section toward the outside of the corrugated portion 24 (one crest 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.

The protrusion 23c of the inclined portion 23 is an engagement portion used when engaging and integrally attaching the spacer 30 and the spacer with a rotation mechanism 30S described below to the deck plate 20, and its shape is not limited to a mountain-shaped cross section, but may be any shape that allows engagement.

The protrusion 23c is formed near the portion where the inclined portion 23 and the valley bottom portion 22 are connected, but this is not limited thereto, 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.

The spacers 30 and the spacers with rotation mechanisms 30S are attached integrally to the deck plate 20. For example, in this case, the spacers 30 and the spacers with rotation mechanisms 30S are attached alternately to the deck plate 20 at regular intervals. However, this is not limited to the above, and all the spacers with rotation mechanisms 30S may be attached to the deck plate 20 at regular intervals, or, for example, a spacer with a rotation mechanism 30S may be attached to the deck plate 20 for every three spacers 30.

Next, the configurations of the spacer 30 and the spacer with a rotation mechanism 30S will be described. The only difference is that the spacer 30 has a rebar receiver 35 integrally formed therein, whereas the spacer with a rotation mechanism 30S has a rotation mechanism unit 40 integrally formed therein in addition to the rebar receiver 35. Therefore, by describing the configuration of the spacer with a rotation mechanism 30S, the configuration of the spacer 30 will also be described.

The spacer with rotation mechanism 30S has a spacer 30, a reinforcing bar support 35, and a rotation mechanism 40. The spacer 30 is formed by bending a steel bar (reinforcing bar) and has a trapezoidal shape with no lower base to match the shape of the deck plate 20. The spacer 30 is assembled together by engaging with the protrusion 23c of the inclined portion 23 of the deck plate 20.

The spacer 30 has a rod-shaped, straight bridge portion 31 that faces the peak portion 21 of the deck plate 20, and a rod-shaped leg portion 32 that is connected to the bridge portion 31 and is capable of engaging with the inclined portion 23 of the deck plate 20.

The bridge portion 31 of the spacer 30 is a rod-shaped portion formed parallel to and slightly longer than the peak portion 21 of the deck plate 20. When the spacer with rotation mechanism 30S is attached to the deck plate 20, the bridge portion 31 of the spacer 30 is positioned slightly above the peak portion 21 of the deck plate 20 without coming into contact with it.

The pair of legs 32 of the spacer 30 are rod-shaped portions that extend outward and downward from both side ends of the bridge section 31 so as to be approximately parallel to the inclined portion 23 of the deck plate 20. The legs 32 have bent portions 32c whose tip portions are bent at a predetermined angle so as to be able to engage with the protrusions 23c of the inclined portion 23 of the deck plate 20.

The length of the leg 32 is also formed to be slightly longer than the inclined portion 23 of the deck plate 20. Therefore, when the bent portion 32c of the leg 32 is engaged with and locked to the protrusion 23c of the inclined portion 23 of the deck plate 20, the bridge portion 31 is positioned above and away from the peak portion 21 of the deck plate 20.

A space is therefore formed between the bridge portion 31 of the spacer 30 and the groove portion 21m of the crest portion 21 of the deck plate 20, allowing the worker to insert his or her fingers into the space during construction. This allows the worker to use the bridge portion 31 of the spacer 30 as a handle when carrying the deck plate 100 with spacer.

In addition, the legs 32 of the spacer 30 are partially in contact with the upper end of the inclined portion 23 of the deck plate 20, so that the spacer 30S with a rotation mechanism is maintained without falling over when it is attached integrally to the deck plate 20.

Furthermore, the reinforcing bar support 35 and the rotation mechanism 40 are fixed to the bridge portion 31 of the spacer 30 by welding or the like. The spacer with rotation mechanism 30S is formed by integrally fixing the reinforcing bar support 35 and the rotation mechanism 40 to the bridge portion 31 of the spacer 30.

The reinforcing bar receiver 35 and the rotation mechanism 40 fixed to the bridge portion 31 of the spacer 30 are arranged at a fixed distance from each other, and in this case, the groove portion 21m of the peak portion 21 of the deck plate 20 is positioned between the reinforcing bar receiver 35 and the rotation mechanism 40. In other words, the reinforcing bar receiver 35 and the rotation mechanism 40 fixed to the bridge portion 31 of the spacer 30 are arranged at a position offset a predetermined distance from the groove portion 21m of the peak portion 21 of the deck plate 20.

The reinforcing bar receiver 35 is formed into a roughly U-shaped cross section by bending a bar-shaped steel (reinforcing bar) that is roughly the same thickness as the spacer 30 or slightly thinner. The reinforcing bar receiver 35 is fixed integrally to the bridge portion 31 of the spacer 30 by welding or the like. The reinforcing bar receiver 35 has a reinforcing bar holding width that is the same as or slightly smaller than the diameter of the reinforcing bar 50, allowing it to firmly hold the reinforcing bar 50 by fitting it in place.

As shown in FIG. 3, the rotation mechanism 40 has a main body 41 having a cubic or rectangular parallelepiped shape, and a rotating part 42 supported so as to be freely rotatable in the horizontal direction relative to the main body 41. The main body 41 and the rotating part 42 are made of metal, and the main body 41 is fixed integrally to the bridge part 31 of the spacer 30 by welding or the like.

The rotating part 42 is formed integrally with a rotating shaft 42a and a roughly U-shaped rotating holder 42b. The rotating shaft 42a of the rotating part 42 is inserted into a through hole provided in the center of the main body 41 and is rotatably supported by a bearing (not shown) attached to the through hole.

The rotating holder 42b of the rotating part 42 is attached to the upper end of the rotating shaft 42a and is integrated with the rotating shaft 42a while protruding from the top surface of the main body part 41. The rotating holder 42b has a reinforcing bar holding width that is equal to or slightly smaller than the diameter of the reinforcing bar 51 and is capable of firmly holding the reinforcing bar 51.

The reinforcing steel bars 50 and 51 are, for example, deformed steel bars made by rolling steel to provide uneven protrusions called ribs or nodes on the surface. However, this is not limited to this, and reinforcing steel bars 50 and 51 may be made of various other shapes and types of steel bars, such as round steel or square steel. Note that reinforcing steel bars 50 and 51 do not need to be the same type and have the same diameter, and may be different types and diameters.

Therefore, the rotation mechanism 40 can rotate in a horizontal direction (arrow X direction) parallel to the flat surface of the summit 21 of the deck plate 20 while the rotation holding portion 42b of the rotating portion 42 holds the reinforcing steel bar 51 relative to the main body 41 fixed to the bridge portion 31 of the spacer 30.

When the spacer-equipped deck plate 100 is shipped from the factory, the rotation mechanism 40 holds the reinforcing steel bars 51 in a state aligned with the longitudinal direction of the peak portion 21 of the deck plate 20, as shown in FIG. 1.

Then, at the construction site, the rotation mechanism 40 rotates the rotation holding portion 42b of the rotation portion 42 about 90 degrees relative to the main body 41, making it possible to position the reinforcing steel bars 51 in the short direction perpendicular to the longitudinal direction of the summit portion 21 of the deck plate 20, i.e., along the bridge portion 31. Here, it is preferable that a specified stopper (not shown) is attached to the rotation mechanism 40 to fix the rotation holding portion 42b of the rotation mechanism 40 at the position rotated 90 degrees.

In the above configuration, the deck plate with spacer 100 can be integrally attached to the deck plate 20 with the spacer with rotation mechanism 30S. At this time, the spacer with rotation mechanism 30S can be easily attached in a stable state without falling over simply by engaging the bent portion 32c of the leg portion 32 of the spacer 30 with the protrusion 23c of the inclined portion 23 of the deck plate 20.

In this mounted state, the spacer 30S with rotation mechanism pushes the reinforcing steel bar 50 into the reinforcing steel bar receiver 35 fixed to the bridge portion 31 of the spacer 30, so that it is held firmly in place. After that, the reinforcing steel bar 51 is pushed into the rotating holding portion 42b of the rotating portion 42 of the rotating mechanism portion 40, so that it is held firmly in place.

At this time, the rotating holder 42b is rotated so that the reinforcing bars 51 are aligned along the longitudinal direction of the crest 21 of the deck plate 20, and the reinforcing bars 50 and 51 are arranged parallel to each other. In other words, the reinforcing bars 50 and 51 are arranged parallel to each other as shown in FIG. 1.

This allows workers to transport the deck plate 100 with spacers safely and easily when shipping from the factory, without the reinforcing steel bars 50 and 51 getting in the way.

At the construction site, the worker can rotate the rotating holding portion 42b of the rotating portion 42 of the rotating mechanism portion 40 by approximately 90 degrees relative to the main body portion 41, thereby positioning the reinforcing steel bar 51 together with the rotating holding portion 42b in a short direction perpendicular to the long direction of the peak portion 21 of the deck plate 20, parallel to the bridge portion 31 of the spacer 30.

In other words, at the construction site, workers can easily place reinforcing steel bars 50 in the longitudinal direction on the peak portion 21 of the deck plate 20 via the reinforcing bar receiver 35 of the spacer 30S with a rotating mechanism, and also place reinforcing steel bars 51 in the transverse direction via the rotating mechanism unit 40.

Thus, the deck plate with spacers 100 can construct a lattice-shaped reinforcement section using reinforcing bars 50 arranged in a fixed state in the longitudinal direction and reinforcing bars 51 arranged in a rearranged state in the transverse direction, making it possible to reinforce composite slabs more easily, simply, and reliably than in the past.

Then, concrete is poured onto the top surface of the deck plate 20 on which the welded wire mesh is placed and allowed to solidify, forming a composite slab using the deck plate 100 with spacers.

(2) Second embodiment The configuration of a spacer-equipped deck plate according to a second embodiment of the present invention will be described in detail below with reference to Fig. 4 to Fig. 6. Fig. 4 is a schematic perspective view showing the configuration of a spacer-equipped deck plate according to the second embodiment of the present invention. Fig. 5 is a schematic cross-sectional view showing the overall configuration of a spacer-equipped deck plate according to the second embodiment of the present invention. Fig. 6 is a schematic cross-sectional view showing the configuration of a spacer with a rotation mechanism according to the second embodiment of the present invention.

As shown in FIG. 4, in which parts corresponding to those in FIG. 1 are given the same reference numerals, the deck plate with spacer 200 is constructed by integrating the deck plate 20, the spacer 30, and the spacer with rotation mechanism 30V, and the deck plate 20 is spanned between beams, for example H-shaped steel, arranged opposite each other. The spacer with rotation mechanism 30V has the same basic structure as the spacer 30, but differs in that it has a rotation mechanism unit 60, which will be described later.

The deck plate 20 has the same configuration as in the first embodiment, so its description will be omitted here. The spacer with rotation mechanism 30V has the same basic configuration as the spacer with rotation mechanism 30S in the first embodiment, except that a rotation mechanism unit 60 is fixed to the bridge portion 31 instead of the rotation mechanism unit 40 in the first embodiment, and the rest of the configuration of the bridge portion 31, the leg portion 32, and the rebar support 35 are the same.

As shown in Figures 5 and 6, the rotation mechanism 60 is configured as if the rotation mechanism 40 in the first embodiment had been turned 90 degrees. This rotation mechanism 60 also has a main body 61 having a cubic or rectangular parallelepiped shape, and a rotating part 62 supported for free rotation on the side of the main body 61 on the left side in the figure (i.e., the side opposite the rebar receiver 35). The main body 61 and the rotating part 62 are made of metal, and the main body 61 is fixed integrally to the bridge part 31 of the spacer 30 by welding or the like.

The rotating part 62 is integrally formed with a rotating shaft 62a and a roughly U-shaped rotating holder 62b. The rotating shaft 62a of the rotating part 62 is inserted into a through hole provided horizontally along the bridge part 31 in the center of the side of the main body part 61, and is supported by a bearing (not shown) attached to the through hole so as to be rotatable in the vertical direction (arrow Y direction) perpendicular to the bridge part 31.

The rotating part 62's rotating holder 62b is attached to the left end of the rotating shaft 62a and is fixed integrally with the main body 61 in a state where it protrudes outward from the side of the main body 61. The rotating holder 62b has a reinforcing bar holding width that is equal to or slightly smaller than the diameter of the reinforcing bar 51, enabling it to firmly hold the reinforcing bar 51.

Therefore, the rotation mechanism unit 60 can rotate in a vertical direction (arrow Y direction) perpendicular to the bridge portion 31 while the rotation holding portion 62b of the rotating unit 62 holds the reinforcing steel bar 51 relative to the main body unit 61 fixed to the bridge portion 31 of the spacer 30.

When the spacer-equipped deck plate 200 is shipped from the factory, the rotation mechanism 60 holds the end of the reinforcing steel bar 51 parallel to the peak 21 of the deck plate 20 as shown in Figure 4 and does not protrude outward from the end of the peak 21 as shown by the dashed line.

Then, at the construction site, the worker rotates the rotating and holding part 62b of the rotating mechanism part 60 about 180 degrees relative to the main body part 61 in a vertical direction (arrow Y direction) perpendicular to the bridge part 31. This enables the rotating mechanism part 60 to rearrange the reinforcing steel bars 51 so that they protrude outward from the end of the peak part 21 of the deck plate 20. Here, it is preferable that the rotating mechanism part 60 is equipped with a specified stopper (not shown) for fixing the rotating and holding part 62b of the rotating mechanism part 60 in a position rotated 180 degrees.

In the above configuration, the deck plate with spacer 200 can be integrally attached to the deck plate 20 with the spacer with rotation mechanism 30V. At this time, the spacer with rotation mechanism 30V can be easily attached in a stable state without falling over simply by engaging the bent portion 32c of the leg portion 32 of the spacer 30 with the protrusion 23c of the inclined portion 23 of the deck plate 20.

In this mounted state, the spacer 30V with rotation mechanism pushes the reinforcing steel bar 50 into the reinforcing steel bar receiver 35 fixed to the bridge portion 31 of the spacer 30, so that it is held firmly in place. After that, the reinforcing steel bar 51 is pushed into the rotating holding portion 62b of the rotating portion 62 of the rotating mechanism portion 60, so that it is held firmly in place.

At this time, the rotating holder 62b is rotated so that the reinforcing bars 51 are parallel to the crest 21 of the deck plate 20 and do not protrude outward from the end of the crest 21, and the reinforcing bars 50 and 51 are arranged parallel to each other. In other words, the reinforcing bars 50 and 51 are arranged parallel to each other as shown in Figure 4.

This allows workers to transport the deck plate with spacers 200 safely and easily when shipping from the factory, without the reinforcing steel bars 51 getting in the way.

At the construction site, the worker can rotate the rotating holding portion 62b of the rotating portion 62 of the rotating mechanism portion 60 by approximately 180 degrees in a vertical direction (direction of arrow Y) perpendicular to the flat surface of the peak portion 21 of the deck plate 20, so that the reinforcing steel bars 51 are rearranged so that they partially protrude outward from the end of the peak portion 21 of the deck plate 20 as shown in Figure 1.

In other words, in addition to arranging the reinforcing steel bars 50 in the longitudinal direction relative to the peak portion 21 of the deck plate 20 via the spacer 30V with a rotating mechanism, the reinforcing steel bars 51 can be arranged to protrude outward from the end of the peak portion 21 of the deck plate 20.

Thus, when the deck plates 20 are connected in the longitudinal direction, the deck plates 200 with spacers can be arranged so that the reinforcing steel bars 51 and the steel bars 50 of adjacent deck plates 20 in the longitudinal direction are arranged in the same direction as if they were continuous.

As a result, when multiple deck plates 20 are connected in the longitudinal direction, the reinforcing bars 50 and 51 can be connected continuously in the same direction without interruption, and a welded wire mesh (not shown) can be placed on top of them, thereby sufficiently reinforcing the composite slab.

Then, concrete is poured onto the top surface of the deck plate 20 on which the welded wire mesh is placed and allowed to solidify, forming a composite slab using the deck plate 200 with spacers.

(3) Other embodiments In the first and second embodiments, the case where the rotation mechanism 40, 60 having the configuration described above is used has been described. However, the present invention is not limited to this, and it is also possible to use a rotation mechanism having various other configurations.

In addition, in the above-mentioned first and second embodiments, the deck plate 20 made of corrugated steel plate having a corrugated portion 24 with a corrugated cross section is described as the target of application, but the present invention is not limited to this, and the target of application may be a steel plate with a flat surface other than a deck plate made of corrugated steel plate, as long as the spacer is attached or placed on a flat surface and has a flat bridge portion and legs that are connected to the bridge portion and stand upright.

In addition, a person skilled in the art can appropriately modify the spacer deck plates 100, 200 of the present invention in accordance with previously known knowledge. As long as such modifications still provide the configuration of the present invention, they are of course included in the scope of the present invention.

100, 200... deck plate with spacer, 20... deck plate, 21... summit, 22... valley bottom, 23... inclined portion, 24... corrugated portion, 30... spacer, 30S, 30V... spacer with rotation mechanism, 31... bridge portion, 32... legs, 35... reinforcing bar support, 40, 60... rotation mechanism portion, 41, 61... main body portion, 42, 62... rotating portion, 42a, 62a... rotating shaft, 42b, 62b... rotation support portion, 50, 51... reinforcing bar.

Claims (5)

a spacer that is assembled by engaging with an 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 a leg portion connected to the bridge portion and capable of engaging with the inclined portion;
A rotation mechanism that holds a reinforcing bar against the bridge portion along the longitudinal direction of the crest portion and can rotate the reinforcing bar in a horizontal direction parallel to the crest portion or a vertical direction perpendicular to the crest portion while holding the reinforcing bar;
The spacer is
a reinforcing bar receiver that is fixed integrally with the bridge section in order to place a reinforcing bar on the bridge section, is provided in parallel with the rotation mechanism section, and holds the reinforcing bar;
A spacer with a rotation mechanism. The spacer with a rotation mechanism according to claim 1 , wherein the rotation mechanism is provided at a position of the bridge portion that is offset from a groove portion provided at the top portion of the deck plate. A spacer attached to or placed on the deck plate and having a flat bridge portion and a leg portion connected to the bridge portion and standing upright;
A rotation mechanism unit that holds a reinforcing bar against the bridge section and can rotate the reinforcing bar in a horizontal direction parallel to the deck plate or a vertical direction perpendicular to the deck plate while holding the reinforcing bar ,
The spacer is
a reinforcing bar receiver that is fixed integrally with the bridge section in order to place a reinforcing bar on the bridge section, is provided in parallel with the rotation mechanism section, and holds the reinforcing bar;
A spacer with a rotation mechanism. 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 and has a bridge portion that faces the summit 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 deck plate with spacers comprising: a rotation mechanism that holds reinforcing bars against the bridge portion along the longitudinal direction of the summit portion and can rotate the deck plate in the held state in a horizontal direction parallel to the summit portion or in a vertical direction perpendicular to the summit portion. 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 and has a bridge portion that faces the summit 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 rotation mechanism that holds a reinforcing bar against the bridge portion along the longitudinal direction of the crest portion and can rotate the reinforcing bar in a horizontal direction parallel to the crest portion or a vertical direction perpendicular to the crest portion while holding the reinforcing bar;
A reinforcing bar rotatably held by the rotation mechanism;
and concrete poured onto the upper surface of the deck plate and hardened.

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