JP7011965B2 - Hardware and support structure - Google Patents

Description

The present invention relates to hardware attached to a deck plate and a support structure.

Conventionally, a void (hollow) of a void slab is formed by embedding a void formwork in concrete. Thin-walled steel pipes and EPS molded products are generally used for this formwork. Since buoyancy acts on these void formwork when concrete is placed, a mechanism for receiving and fixing this buoyancy is required in order to construct the void at an appropriate position. When the deck plate is used as a concrete formwork, a method of fixing a metal fitting or the like for receiving the void formwork to the deck plate by welding and transmitting the acting force is adopted. For example, in Patent Document 1, the void formwork is fixed to the deck plate with metal fittings or the like. Further, as a method that does not use welding, in Patent Document 2, an anchor is installed in the slab formwork.

Japanese Unexamined Patent Publication No. 2001-107499 Japanese Unexamined Patent Publication No. 2008-6736

However, the method involving welding as shown in Patent Document 1 takes time and effort, and causes problems such as product transportation and management. Further, the method as shown in Patent Document 2 which does not use welding has a problem that the structure is complicated and the work of installing the anchor is troublesome. That is, welding is not required, but positioning and drilling work, and hole processing after dismantling the concrete formwork take time and effort and require skill.

The present invention has been made to solve such a problem, and to provide a hardware and a support structure capable of sufficiently preventing the floating of the void formwork while having a simple structure that does not require time and effort for installation. With the goal.

The hardware according to the present invention is arranged on a deck plate which is arranged so as to be separated from each other in the first direction and has a plurality of mountain portions extending upward and extending in a horizontal direction orthogonal to the first direction. A second engagement member that is attached to a hardware and is connected to a first engaging member that engages with a mountain portion and engages with a mountain portion that is different from the first engaging member. It includes a mating member and a supporting member that is supported by a mountain portion and maintains a posture of the hardware in a second direction.

The hardware according to the present invention includes a first engaging member that engages with a mountain portion and a second engaging member that engages with a mountain portion different from the first engaging member. Further, the second engaging member is connected to the first engaging member. With such a structure, the first engaging member is engaged with one mountain portion, the second engaging member is engaged with the other mountain portion, and the mountain portions are connected to each other. The first engaging member and the second engaging member are bridged. Therefore, by engaging the engaging member with each mountain part and installing it in advance before placing the concrete, at the time of placing, the part that is bridged between each mountain part comes to the surface. Can support the void formwork. Further, the hardware is supported by the mountain portion and includes a support member that maintains the posture of the hardware in the second direction. Therefore, the support member can maintain the posture of the hardware by utilizing the mountain portion in a state where the engaging member is engaged with each mountain portion. In this way, the hardware can be installed on the deck plate simply by engaging the engaging member with the mountain portion and supporting it with the support member without performing welding or the like. Further, despite the simple structure as described above, when concrete is placed, the floating void formwork is sufficiently supported by the engaging force of the first engaging member and the second engaging member on the mountain portion. be able to. As described above, it is possible to sufficiently prevent the void formwork from floating while having a simple structure that does not require much labor for installation.

Further, in the hardware according to the present invention, the first engaging member and the second engaging member may engage with each mountain portion from the outside in the first direction. When the hardware supports the floating void formwork, an upward force acts on the first engaging member and the second engaging member. In this case, the first engaging member and the second engaging member are deformed so as to be convex upward as a whole. As a result, a force acts on the portion of each engaging member that is engaged with each mountain portion from the outside toward the inside in the first direction, that is, toward each mountain portion. As a result, the engaging force of each engaging member with respect to the mountain portion is improved.

Further, in the hardware according to the present invention, at least one mountain portion is provided between the mountain portion engaged with the first engaging member and the mountain portion engaged with the second engaging member. The support member may be supported by a mountain portion that is not engaged with the first engaging member and the second engaging member. As a result, the support member is arranged between the first engaging member and the second engaging member, and is arranged between the mountain portions related to the engagement target of each engaging member. Supported by. With such a structure, it is possible to improve the stability when the hardware is installed on the deck plate.

Further, the hardware according to the present invention may further include a regulating member that regulates the movement of the void formwork floating in the concrete within a predetermined region when the concrete is placed on the deck plate. This makes it possible to stabilize the posture of the void formwork in a state of being supported by the hardware.

Further, the hardware according to the present invention engages with the mountain portion engaged with the first engaging member at a position separated from the first engaging member on one side in the second direction. The engagement member of 3 and the mountain portion connected to the third engagement member and engaged with the second engagement member are separated from the second engagement member on one side in the second direction. It may be provided with a fourth engaging member that engages at the required position. As a result, the hardware is in a state of being supported at four points at each mountain portion via each engaging member engaged with each mountain portion in four directions. Therefore, it is possible to improve the stability when the hardware is installed on the deck plate.

Further, the hardware according to the present invention is arranged on the upper surface of the mountain portion, further includes a spacer member for separating the upper end portion of the hardware and the upper surface of the mountain portion, and the first engaging member, the second engaging member, and the like. The third engaging member and the fourth engaging member are connected to the upper end side of the spacer member. By arranging such a spacer member on the upper surface of the mountain portion, the upper end portion of the hardware can be arranged at a position higher than the upper surface of the mountain portion. As a result, the reinforcing bars in the concrete provided above the hardware can be arranged at a high position with respect to the mountain portion. Further, since each engaging member is connected to the upper end side of the spacer member, even if the height of the hardware is high, the upper end side of the hardware is supported at four points at each mountain portion via each engaging member. It becomes a state. This makes it possible to improve the stability when the hardware is installed on the deck plate.

Further, the hardware according to the present invention is further provided with a spacer member which is arranged on the upper surface of the mountain portion and which separates the upper end portion of the hardware from the upper surface of the mountain portion, and the spacer member is a bottom surface extending in the first direction on the bottom side. A pair of side parts extending upward from both ends of the bottom part, a pair of side parts extending upward from both ends of the bottom part, and a pair of side parts extending from the upper end of the pair of side sides toward the center and connected to each other at the end on the center side. It may be provided with an upper side. By arranging such a spacer member on the upper surface of the mountain portion, the upper end portion of the hardware can be arranged at a position higher than the upper surface of the mountain portion. As a result, the reinforcing bars in the concrete provided above the hardware can be arranged at a high position with respect to the mountain portion. Further, since the spacer member has a bottom portion extending in the first direction on the bottom side, stability when placed on the upper surface of the mountain portion can be improved. Further, since the spacer member includes a side portion and an upper side portion extending upward from both end sides of the bottom portion, the spacer member is compared with a configuration in which only one member extends from the center position of the bottom portion, for example. Therefore, the stability when placed on the upper surface of the mountain portion can be improved.

The support structure according to the present invention is a deck plate having a plurality of mountain portions arranged so as to be separated from each other in the first direction and extending upward in a horizontal direction orthogonal to the first direction. It is a support structure for supporting the void formwork in the above, and includes a metal fitting attached to the deck plate and a lower metal fitting attached to the deck plate and supporting the void formwork, and the metal fitting is engaged with the mountain portion. A first engaging member and a second engaging member connected to the first engaging member and engaged with the mountain portion different from the first engaging member are provided, and the lower metal fitting is the first. It is bridged between the mountain portion with which the engaging member of the above is engaged and the mountain portion with which the second engaging member is engaged, and supports the void formwork between the mountain portions.

The hardware of the support structure according to the present invention includes a first engaging member that engages with the mountain portion and a second engaging member that engages with the mountain portion different from the first engaging member. There is. Further, the second engaging member is connected to the first engaging member. With such a structure, the first engaging member is engaged with one mountain portion, the second engaging member is engaged with the other mountain portion, and the mountain portions are connected to each other. The first engaging member and the second engaging member are bridged. Therefore, by engaging the engaging member with each mountain part and installing it in advance before placing the concrete, at the time of placing, the part that is bridged between each mountain part comes to the surface. Can support the void formwork. Here, if a void formwork is installed between the mountainous portions before placing the concrete, it may be difficult to fill the lower side of the void formwork with concrete. On the other hand, the support structure according to the present invention includes a metal fitting that is attached to the deck plate and supports the void formwork. The lower metal fitting is bridged between the mountain portion with which the first engaging member is engaged and the mountain portion with which the second engaging member is engaged, and supports the void formwork between the mountain portions. .. Therefore, the lower metal can support the void formwork at a position above the bottom of the deck plate so that the lower side of the void formwork can be easily filled with concrete. As described above, it is possible to sufficiently prevent the void formwork from floating while having a simple structure that does not require much labor for installation.

Further, in the support structure according to the present invention, the lower metal fitting may have a positioning portion for positioning the void formwork in the first direction. This makes it possible to prevent the position of the void formwork from shifting when the lower metal fitting supports the void formwork.

Further, in the support structure according to the present invention, the positioning portion may be configured such that the lower metal fitting is concave downward. This allows the void formwork to be positioned without the need for additional members on the lower hardware.

Further, in the support structure according to the present invention, the lower metal fitting may have an engaging portion that engages with the mountain portion. As a result, it is possible to prevent the lower metal fitting from shifting with respect to the mountain portion.

According to the present invention, it is possible to provide a hardware and a support structure that can sufficiently prevent the void formwork from floating while having a simple structure that does not require time and effort for installation.

It is a perspective view which shows the state which the hardware which concerns on 1st Embodiment of this invention is attached to a deck plate. It is a front view which shows the hardware and the deck plate shown in FIG. It is a perspective view of the hardware shown in FIG. It is a schematic sectional drawing of the concrete slab constructed by using a deck plate. It is a perspective view of the hardware which concerns on 2nd Embodiment. It is a perspective view of the hardware which concerns on 3rd Embodiment. It is a perspective view of the hardware which concerns on 4th Embodiment. It is a front view which shows the hardware and the deck plate shown in FIG. 7. It is a figure which shows the modification of the engagement member. It is a perspective view which shows the support structure of the void formwork using the hardware which concerns on 5th Embodiment. It is a front view of the support structure shown in FIG. It is a front view of the support structure using the lower metal fitting which concerns on the modification.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view showing a state in which the hardware according to the first embodiment of the present invention is attached to the deck plate. FIG. 2 is a front view showing the hardware and the deck plate shown in FIG. FIG. 3 is a perspective view of the hardware shown in FIG. FIG. 4 is a schematic cross-sectional view of a concrete slab constructed using a deck plate. The hardware 100 according to the present embodiment is used to form the concrete slab 50 as shown in FIG. In the following description, XYZ coordinates may be set for explanation. One direction in the horizontal direction is the X-axis direction, the direction orthogonal to the X-axis direction in the horizontal direction is the Y-axis direction, and the vertical direction is the Z-axis direction. One side in the X-axis direction is the "positive side" and the other side is the "negative side". One side in the Y-axis direction is the "positive side" and the other side is the "negative side". The upper side in the Z-axis direction is the "positive side" and the lower side is the "negative side".

First, the configuration of the concrete slab 50 and the deck plate 60 will be described with reference to FIG. As shown in FIG. 4, the concrete slab 50 is configured by using a deck plate 60 as a formwork and placing concrete 52 on the deck plate 60. Inside the concrete 52, a void formwork 53 for forming the void V and a wire mesh-like reinforcing bar 54 arranged in the horizontal direction near the upper surface are provided. The deck plate 60 includes a bottom surface portion 61 extending in the horizontal direction and a plurality of mountain portions 62 protruding upward from the bottom surface portion 61 (see FIG. 1). The plurality of mountain portions 62 are arranged so as to be separated from each other in the X-axis direction. Further, each of the plurality of mountain portions 62 extends in the Y-axis direction. Further, the mountain portion 62 includes a vertical portion 63 extending vertically straight upward from the bottom surface portion 61, and an enlarged portion 64 provided at the upper end portion of the vertical portion 63. The enlarged portion 64 has an inverted triangular shape, and the upper surface 62a is enlarged with respect to the thickness of the vertical portion 63. For convenience of explanation, the three mountain portions 62 related to the attachment of the hardware 100 in the present embodiment may be referred to as mountain portions 62A, mountain portions 62B, and mountain portions 62C from the negative side to the positive side in the X-axis direction. be.

The void formwork 53 is arranged at an intermediate position in the concrete 52 in the vertical direction. The void formwork 53 is arranged on the bottom surface portion 61 of the deck plate 60 before the concrete 52 is placed. Then, when the concrete 52 is cast, the void formwork 53 rises in the concrete 52 due to buoyancy before the concrete 52 is hardened. The void formwork 53 rises through a gap between the enlarged portions 64 of the adjacent mountain portions 62. Then, the void formwork 53 stops at a position held by the hardware 100 (see FIG. 2), and is fixed at that position as the concrete 52 hardens. The reinforcing bar 54 is arranged near the upper surface in the concrete 52. The reinforcing bar 54 is placed on the upper end portion 100a of the hardware 100 before the concrete 52 is placed (see FIG. 2). The reinforcing bar 54 is fixed at the position by casting and hardening the concrete 52.

The configuration of the hardware 100 will be described with reference to FIGS. 1 to 3. The hardware 100 is a member attached to the deck plate 60 having a plurality of mountain portions 62. Further, the hardware 100 holds the void formwork 53 that floats in the concrete 52 at a predetermined position while being attached to the deck plate 60, and the reinforcing bar 54 is placed at a predetermined height position in the concrete 52. Has the function of holding. As shown in FIGS. 1 to 3, the hardware 100 includes a spacer member 1, a support member 2, an engagement member 3, a regulation member 4, a connecting member 6, and a receiving member 7.

The spacer member 1 is arranged on the upper surface 62a of at least one mountain portion 62, and is a member that separates the upper end portion 100a of the hardware 100 from the upper surface 62a of the mountain portion 62. In the present embodiment, the spacer member 1 is arranged on the upper surface 62a of the mountain portion 62B among the mountain portions 62A, 62B, 62C. However, the spacer member 1 may be arranged over a plurality of mountain portions 62. The spacer member 1 has a constant height in the vertical direction. The spacer member 1 may extend in the X-axis direction at the lower end portion arranged on the upper surface 62a of the mountain portion 62. As a result, the spacer member 1 can fall from the upper surface 62a of the mountain portion 62 and maintain the posture (for example, inclination) in the X-axis direction on the upper surface 62a. However, the lower end portion of the spacer member 1 may extend in the Y-axis direction with respect to the upper surface 62a, or may be configured to substantially make point contact with the upper surface 62a. Further, only one spacer member 1 may be provided in the Y-axis direction, or a plurality of spacer members 1 may be provided. When a plurality of spacer members 1 are provided, the posture of the hardware 100 in the Y-axis direction can be maintained, so that it may also function as the support member 2 described later.

The support member 2 is a member that is supported by the mountain portion 62 and maintains the posture of the hardware 100 in the Y-axis direction. The support member 2 is supported by a mountain portion 62B that is not engaged with the engagement members 3A, 3B, 3C, and 3D described later. The support member 2 is supported by a portion extending by a predetermined dimension in the Y-axis direction, a portion supported by the upper surface 62a of the mountain portion 62B on the positive side in the Y-axis direction, and a portion supported by the upper surface 62a of the mountain portion 62B on the negative side in the Y-axis direction. It has a part to be done. A part of the support member 2 may be composed of the spacer member 1. Therefore, a portion provided on the mountain portion 62B and including the spacer member 1 and the support member 2 may be referred to as a main body portion 10. The main body portion 10 may be regarded as a member that functions as the spacer member 1 and the support member 2. Therefore, unless otherwise specified, the expression "connected to the main body 10" is equivalent to "directly or indirectly connected to the spacer member 1" and "directly or indirectly connected to the support member 2". It shall be an expression.

The engaging member 3 is a member that engages with the mountain portion 62. In the present embodiment, the hardware 100 includes a first engaging member 3A, a second engaging member 3B, a third engaging member 3C, and a fourth engaging member 3D. The first engaging member 3A is a member that engages with the mountain portion 62A that is separated from the mountain portion 62B on which the spacer member 1 is arranged on the negative side in the X-axis direction. The second engaging member 3B is a member that engages with the mountain portion 62C that is separated from the mountain portion 62B on which the spacer member 1 is arranged on the positive side in the X-axis direction. The third engaging member 3C engages with the mountain portion 62A engaged with the first engaging member 3A at a position separated from the first engaging member 3A on the positive side in the Y-axis direction. It is a member to be used. The fourth engaging member 3D engages with the mountain portion 62C engaged with the second engaging member 3B at a position separated from the second engaging member 3B on the positive side in the Y-axis direction. It is a member to be used. The first engaging member 3A, the second engaging member 3B, the third engaging member 3C, and the fourth engaging member 3D are connected to the spacer member 1. The first engaging member 3A, the second engaging member 3B, the third engaging member 3C, and the fourth engaging member 3D are connected to the upper end side of the main body 10. The second engaging member 3B is connected to the first engaging member 3A. The second engaging member 3B may be directly connected to the first engaging member 3A, or may be indirectly connected to the first engaging member 3A via the main body portion 10. The fourth engaging member 3D is connected to the third engaging member 3C. The fourth engaging member 3D may be directly connected to the third engaging member 3C, or may be indirectly connected to the third engaging member 3C via the main body portion 10.

The first engaging member 3A extends downward from the upper end side of the main body portion 10 on the negative side in the X-axis direction and downward, and is engaged with the mountain portion 62A at the lower end side portion. The second engaging member 3B extends from the upper end side of the main body portion 10 to the positive side in the X-axis direction and downward, and is engaged with the mountain portion 62C at the lower end side portion. The third engaging member 3C extends downward from the upper end side of the main body portion 10 on the negative side in the X-axis direction and downward, and is engaged with the mountain portion 62A at the lower end side portion. The fourth engaging member 3D extends from the upper end side of the main body 10 toward the positive side and downward in the X-axis direction, and is engaged with the mountain portion 62C at the lower end side portion.

The first engaging member 3A and the third engaging member 3C engage with the mountain portion 62A from the outside in the X-axis direction. The second engaging member 3B and the fourth engaging member 3D engage with the mountain portion 62C from the outside in the X-axis direction. The side where the mountain portions 62A and 62C are provided with surfaces facing each other in the X-axis direction is referred to as "inside in the X-axis direction", and the opposite side is referred to as "outside in the X-axis direction". In Yamabe 62A, the negative side in the X-axis direction corresponds to the "outside" and the positive side corresponds to the "inside". In Yamabe 62C, the positive side in the X-axis direction corresponds to the "outside" and the negative side corresponds to the "inside". The first engaging member 3A and the third engaging member 3C may engage with the mountain portion 62A from the inside in the X-axis direction. The second engaging member 3B and the fourth engaging member 3D may engage with the mountain portion 62C from the inside in the X-axis direction.

The regulating member 4 is a member that regulates the movement of the void formwork 53 that floats in the concrete within a predetermined region when the concrete is placed on the deck plate. The regulating member 4 supports the floating void formwork 53 so as to be sandwiched between the member arranged on the positive side and the member arranged on the negative side in the X-axis direction, thereby supporting the void formwork. The movement of 53 in the X-axis direction is restricted.

The connecting member 6 is a member that connects the engaging members 3 to each other. In the present embodiment, the hardware 100 includes a first connecting member 6A and a second connecting member 6B. The first connecting member 6A connects between the first engaging member 3A and the third engaging member 3C. The second connecting member 6B connects between the second engaging member 3B and the fourth engaging member 3D. The first connecting member 6A extends in the Y-axis direction between a portion on the lower end side of the first engaging member 3A and a portion on the lower end side of the third engaging member 3C, and the first connecting member 6A extends in the Y-axis direction. It is preferable to connect the engaging member 3A and the third engaging member 3C. The second connecting member 6B extends in the Y-axis direction between the lower end side portion of the second engaging member 3B and the lower end side portion of the fourth engaging member 3D, and is the second portion. It is preferable to connect the engaging member 3B and the fourth engaging member 3D.

The receiving member 7 is a member arranged so as to sandwich the mountain portion with the engaging member 3 in the X-axis direction. The receiving member 7 may be provided so as to branch from the engaging member 3 from the portion on the lower end side of the engaging member 3. Further, the receiving member 7 is arranged at a position away from the mountain portion 62 when the engaging member 3 is engaged with the mountain portion 62. That is, when a force acts on the hardware 100 and the engaging member 3 is deformed, the engaging member 3 functions to maintain the engagement by contacting and supporting the mountain portion 62. Further, when the engaging member 3 engages with the mountain portion 62 from the outside in the X-axis direction, the receiving member 7 is arranged inside with respect to the mountain portion 62 in the X-axis direction. When the engaging member 3 engages with the mountain portion 62 from the negative side in the X-axis direction, the receiving member 7 is arranged on the positive side in the X-axis direction with respect to the mountain portion 62. In the present embodiment, the hardware 100 includes a first receiving member 7A, a second receiving member 7B, a third receiving member 7C, and a fourth receiving member 7D. The first receiving member 7A is a member arranged so as to sandwich the mountain portion 62A with the first engaging member 3A in the X-axis direction. The second receiving member 7B is arranged so as to sandwich the mountain portion 62C with the second engaging member 3B in the X-axis direction. The third receiving member 7C is arranged so as to sandwich the mountain portion 62A with the third engaging member 3C in the X-axis direction. The fourth receiving member 7D is arranged so as to sandwich the mountain portion 62C with the fourth engaging member 3D in the X-axis direction.

Next, a more specific configuration of the hardware 100 according to the present embodiment will be described. The hardware 100 is configured by combining a plurality of wire rods. Further, in the hardware 100, each portion of the plurality of combined wire rods functions as the above-mentioned various members.

As shown in FIG. 3, the hardware 100 includes a first void formwork receiving member 20A, a second void formwork receiving member 20B, a first frame-shaped member 21A, and a second frame-shaped member 21B. The upper connecting member 22, the lower connecting member 23, the first side connecting member 24A, and the second side connecting member 24B are provided. These members are composed of straight wire rods or bent / curved wire rods. When the central axis CL extending in the vertical direction is set with respect to the hardware 100, the hardware 100 has a line-symmetrical configuration with respect to the central axis CL when viewed from the Y-axis direction (state shown in FIG. 2). is doing. Further, the hardware 100 has a structure that is line-symmetrical with respect to the central axis CL when viewed from the X-axis direction.

The first void formwork receiving member 20A extends in the X-axis direction between the mountain portion 62A and the mountain portion 62C, and engages with the mountain portion 62A and the mountain portion 62C on both ends to enter the concrete 52. A member that receives a floating void formwork. The first void formwork receiving member 20A includes horizontal portions 31, inclined portions 32A and 32B, horizontal portions 33A and 33B, and hook portions 34A and 34B. The horizontal portion 31 is a portion that extends horizontally from the central axis CL to the positive side and the negative side in the X-axis direction. The inclined portion 32A is a portion extending diagonally downward from the end portion of the horizontal portion 31 on the negative side in the X-axis direction toward the negative side in the X-axis direction. The horizontal portion 33A is a portion that extends horizontally from the lower end portion of the inclined portion 32A toward the negative side in the X-axis direction. The hook portion 34A is a substantially J-shaped portion extending downward from the negative end portion of the horizontal portion 33A in the X-axis direction. The inclined portion 32B is a portion extending diagonally downward from the end portion of the horizontal portion 31 on the positive side in the X-axis direction toward the positive side in the X-axis direction. The horizontal portion 33B is a portion that extends horizontally from the lower end portion of the inclined portion 32B toward the positive side in the X-axis direction. The hook portion 34B is a substantially J-shaped portion extending downward from the positive end portion of the horizontal portion 33B in the X-axis direction.

In particular, as shown in FIG. 2, the horizontal portion 33A is arranged on the upper surface 62a of the mountain portion 62A. The hook portion 34A is arranged so as to wrap around the upper surface 62a of the mountain portion 62A from the end portion on the negative side in the X-axis direction and face the side surface 64a on the negative side in the X-axis direction of the enlarged portion 64. The hook portion 34A is an enlarged portion such that the upper surface 62a of the mountain portion 62A is curved downward from the lower end portion of the first portion 34Aa and the first portion 34Aa extending downward from the negative end portion in the X-axis direction. A second portion 34Ab, which extends toward the side surface 64a of the 64, is provided. The second portion 34Ab comes into contact with the side surface 64a of the enlarged portion 64. The horizontal portion 33B is arranged on the upper surface 62a of the mountain portion 62C. The hook portion 34B is arranged so as to wrap around the upper surface 62a of the mountain portion 62C from the end portion on the positive side in the X-axis direction and face the side surface 64b on the positive side in the X-axis direction of the enlarged portion 64. The hook portion 34B is an enlarged portion so as to bend the upper surface 62a of the mountain portion 62C downward from the lower end portion of the first portion 34Ba extending downward from the positive end portion in the X-axis direction and the lower end portion of the first portion 34Ba. A second portion 34Bb, which extends toward the side surface 64b of 64, is provided. The second portion 34Bb comes into contact with the side surface 64b of the enlarged portion 64.

Returning to FIG. 3, the second void formwork receiving member 20B is arranged at a position separated by a predetermined dimension from the first void formwork receiving member 20A on the positive side in the Y-axis direction. The second void formwork receiving member 20B includes horizontal portions 31, inclined portions 32A and 32B, horizontal portions 33A and 33B, and hook portions 34A and 34B. Since the second void formwork receiving member 20B has the same configuration as the first void formwork receiving member 20A, the description thereof will be omitted.

The first frame-shaped member 21A is a member that is supported by the mountain portion 62B, extends in the vertical direction, and is connected to the first void formwork receiving member 20A. The first frame-shaped member 21A is arranged substantially identically to the first void formwork receiving member 20A in the Y-axis direction. The first frame-shaped member 21A includes a bottom side portion 36, side side portions 37A and 37B, and upper side portions 38A and 38B. The bottom portion 36 is a portion extending horizontally from the central axis CL to both the positive side and the negative side in the X-axis direction on the bottom side. The bottom portion 36 is arranged on the upper surface 62a of the mountain portion 62B (see FIG. 2). The side side portion 37A is a portion extending upward from the negative end portion of the bottom side portion 36 in the X-axis direction. The side side portion 37B is a portion extending upward from the positive end portion of the bottom side portion 36 in the X-axis direction. The upper side portion 38A extends from the upper end portion of the side side portion 37A toward the center side. The upper side portion 38B extends from the upper end portion of the side side portion 37B toward the center side. The upper side portion 38A and the upper side portion 38B are connected to each other at the central end portion. The connecting portion 39 is located on the central axis CL when viewed from the Y-axis direction (see FIG. 2). The height position of the upper end portions of the side side portions 37A and 37B coincides with the height position of the horizontal portion 31 of the first void formwork receiving member 20A. Therefore, the upper end portions of the side side portions 37A and 37B (that is, the connecting portion between the side side portions 37A and 37B and the upper side portions 38A and 38B) are fixed to the horizontal portion 31 of the first void formwork receiving member 20A. There is.

The second frame-shaped member 21B is arranged at a position separated by a predetermined dimension from the first frame-shaped member 21A on the positive side in the Y-axis direction. The second frame-shaped member 21B includes a bottom side portion 36, side side portions 37A and 37B, and upper side portions 38A and 38B. Since the second frame-shaped member 21B has the same configuration as the first frame-shaped member 21A, the description thereof will be omitted.

The upper connecting member 22 is a member that extends straight in the Y-axis direction at the positions of the upper ends of the first frame-shaped member 21A and the second frame-shaped member 21B. The upper connecting member 22 is fixed to the connecting portion 39 of the first frame-shaped member 21A and the connecting portion 39 of the second frame-shaped member 21B. The lower connecting member 23 is a member that extends straight in the Y-axis direction at the positions of the lower ends of the first frame-shaped member 21A and the second frame-shaped member 21B. The lower connecting member 23 is fixed to the central position of the bottom portion 36 of the first frame-shaped member 21A and the central position of the bottom portion 36 of the second frame-shaped member 21B. As a result, the upper connecting member 22 and the lower connecting member 23 can connect the first frame-shaped member 21A and the second frame-shaped member 21B to each other.

The first side connecting member 24A is a member for connecting the first void formwork receiving member 20A and the second void formwork receiving member 20B to each other in the vicinity of the negative end portion in the X-axis direction. .. The first side connecting member 24A includes a horizontal portion 41, a receiving portion 42A, and a receiving portion 42B. The horizontal portion 41 is Y between the position on the lower end side of the inclined portion 32A of the first void formwork receiving member 20A and the position on the lower end side of the inclined portion 32A of the second void formwork receiving member 20B. It is a part that extends straight in the axial direction and is fixed to the part. The receiving portion 42A is a portion extending downward from the negative end portion of the horizontal portion 41 in the Y-axis direction. The receiving portion 42A is arranged so as to face the hook portion 34A of the first void formwork receiving member 20A and the inside (positive side) in the X-axis direction. The receiving portion 42B is a portion extending downward from the positive end portion of the horizontal portion 41 in the Y-axis direction. The receiving portion 42B is arranged so as to face the hook portion 34A of the second void formwork receiving member 20B and the inside (positive side) in the X-axis direction. The receiving portions 42A and 42B are arranged at positions facing each other apart from the inner end portion of the enlarged portion 64 of the mountain portion 62A in the X-axis direction (see FIG. 2).

The second side connecting member 24B is a member for connecting the first void formwork receiving member 20A and the second void formwork receiving member 20B to each other in the vicinity of the positive end portion in the X-axis direction. .. The second side connecting member 24B includes a horizontal portion 41, a receiving portion 42A, and a receiving portion 42B. Since the second side connecting member 24B has the same structure as the first side connecting member 24A, the description thereof will be omitted.

Next, regarding which part of the spacer member 1, the support member 2, the engaging member 3, the regulating member 4, the connecting member 6, and the receiving member 7 functionally corresponds to the configuration by combining the wire rods as described above. explain.

In the present embodiment, the spacer member 1 is composed of a first frame-shaped member 21A and a second frame-shaped member 21B. That is, in the present embodiment, the spacer member 1 may be considered to include a bottom side portion 36, side side portions 37A and 37B, and upper side portions 38A and 38B.

The support member 2 is composed of a first frame-shaped member 21A, a second frame-shaped member 21B, an upper connecting member 22, and a lower connecting member 23. That is, the structures of the first frame-shaped member 21A, the second frame-shaped member 21B, the upper connecting member 22, and the lower connecting member 23 have a predetermined length in the Y-axis direction and have a predetermined length in the Y-axis direction. It is supported by the upper surface 62a of the mountain portion 62B on both ends. For example, even if a force is applied to the hardware 100 so as to tilt it to the positive side in the Y-axis direction, the bottom portion 36 of the second frame-shaped member 21B is supported by the upper surface 62a of the mountain portion 62B. Further, even if a force is applied to the hardware 100 so as to tilt it to the negative side in the Y-axis direction, the bottom portion 36 of the first frame-shaped member 21A is supported by the upper surface 62a of the mountain portion 62B.

Further, in the present embodiment, the first void formwork receiving member 20A and the second void formwork receiving member 20B are connected to the main body 10 in a state of being separated from each other in the Y-axis direction. Further, both ends of the first void formwork receiving member 20A and the second void formwork receiving member 20B in the X-axis direction are supported by the mountain portions 62A and the mountain portions 62C, respectively. For example, even if a force is applied to the hardware 100 to tilt it to the positive side in the Y-axis direction, the horizontal portions 33A and 33B of the second void formwork receiving member 20B are supported by the upper surfaces 62a of the mountain portions 62A and 62C. Will be done. Further, even if a force such as tilting to the negative side in the Y-axis direction is applied to the hardware 100, the horizontal portions 33A and 33B of the first void formwork receiving member 20A are supported by the upper surfaces 62a of the mountain portions 62A and 62C. Will be done. Further, when a force such as tilting to the positive side in the Y-axis direction is applied to the hardware 100, the hook portions 34A and 34B of the first void formwork receiving member 20A become the enlarged portions 64 of the mountain portions 62A and 62C. It resists lifting by being caught and supported. When a force such as tilting to the negative side in the Y-axis direction is applied to the hardware 100, the hook portions 34A and 34B of the second void formwork receiving member 20B are caught and supported by the enlarged portions 64 of the mountain portions 62A and 62C. By being done, it resists floating. From the above, in the present embodiment, the first void formwork receiving member 20A and the second void formwork receiving member 20B may also be regarded as functioning as the support member 2.

The first engaging member 3A is composed of a portion on the negative side in the X-axis direction from the central axis CL of the first void formwork receiving member 20A. The second engaging member 3B is composed of a portion on the positive side in the X-axis direction from the central axis CL of the first void formwork receiving member 20A. Further, the first engaging member 3A and the second engaging member 3B are connected to each other at the portion of the horizontal portion 31. The third engaging member 3C is composed of a portion on the negative side in the X-axis direction from the central axis CL of the second void formwork receiving member 20B. The fourth engaging member 3D is composed of a portion on the positive side in the X-axis direction from the central axis CL of the second void formwork receiving member 20B. Further, the third engaging member 3C and the fourth engaging member 3D are connected to each other at the portion of the horizontal portion 31.

The regulating member 4 is composed of inclined portions 32A and 32B of the first void formwork receiving member 20A and a first frame-shaped member 21A. Further, the regulating member 4 is composed of inclined portions 32A and 32B of the second void formwork receiving member 20B and a second frame-shaped member 21B. For example, as shown in FIG. 2, one void formwork 53 that floats in the concrete 52 and is received by the horizontal portion 31 of the first void formwork receiving member 20A has an inclined portion 32A and a side portion 37A. By arranging between the above, the movement in the X-axis direction is restricted. The other void formwork 53 is arranged between the inclined portion 32B and the side side portion 37B, so that the movement in the X-axis direction is restricted.

The first connecting member 6A is composed of the horizontal portion 41 of the first side connecting member 24A. The second connecting member 6B is composed of a horizontal portion 41 of the second side connecting member 24B. The first receiving member 7A is composed of a receiving portion 42A of the first side connecting member 24A. The second receiving member 7B is composed of a receiving portion 42A of the second side connecting member 24B. The third receiving member 7C is composed of the receiving portion 42B of the first side connecting member 24A. The fourth receiving member 7D is composed of the receiving portion 42B of the second side connecting member 24B.

Next, the action / effect of the hardware 100 according to the present embodiment will be described.

The hardware 100 according to the present embodiment includes a first engaging member 3A that engages with the mountain portion 62A and a second engaging member 3B that engages with the mountain portion 62C different from the first engaging member 3A. , Is equipped. Further, the second engaging member 3B is connected to the first engaging member 3A. With such a structure, the first engaging member 3A is engaged with one mountain portion 62A, the second engaging member 3B is engaged with the other mountain portion 62C, and those mountain portions are engaged. Between 62A and 62C, the first engaging member 3A and the second engaging member 3B connected to each other are bridged. Therefore, by engaging the engaging members 3A and 3B with the mountain portions 62A and 62C and installing them in advance before placing the concrete 52, the concrete 52 is bridged between the mountain portions 62A and 62C at the time of placing. At the portion, the floating void formwork 53 can be supported (see FIG. 2). Further, the hardware 100 is supported by the mountain portion 62B, and includes a support member 2 that maintains the posture of the hardware 100 in the Y-axis direction. Therefore, the support member 2 can maintain the posture of the hardware 100 by using the mountain portion 62B in a state where the engaging members 3A and 3B are engaged with the mountain portions 62A and 62C. In this way, the hardware 100 can be installed on the deck plate 60 simply by engaging the engaging members 3A and 3B with the mountain portions 62A and 62C and supporting them with the support member 2 without performing welding or the like. can. Further, despite having such a simple structure, when the concrete 52 is placed, the void type floats due to the engaging force of the first engaging member 3A and the second engaging member 3B on the mountain portions 62A and 62C. The frame 53 can be sufficiently supported. As described above, it is possible to sufficiently prevent the void formwork 53 from floating while having a simple structure that does not require much labor for installation.

Further, in the hardware 100 according to the present embodiment, the first engaging member 3A and the second engaging member 3B are engaged with the mountain portions 62A and 62C from the outside in the X-axis direction. When the hardware 100 supports the floating void formwork 53, an upward force acts on the first engaging member 3A and the second engaging member 3B. In this case, the first engaging member 3A and the second engaging member 3B are deformed so as to be convex upward as a whole. As a result, a force acts on the portions of the engaging members 3A and 3B that are engaged with the mountain portions 62A and 62C from the outside toward the inner side in the X-axis direction, that is, toward the mountain portions 62A and 62C. As a result, the engaging force of the engaging members 3A and 3B with respect to the mountain portions 62A and 62C is improved.

Further, in the hardware 100 according to the present embodiment, there is a mountain portion 62A engaged with the first engaging member 3A and a mountain portion 62C engaged with the second engaging member 3B. A portion 62B is provided, and the support member 2 is supported by a mountain portion 62B that is not engaged with the first engaging member 3A and the second engaging member 3B. As a result, the support member 2 is arranged between the first engaging member 3A and the second engaging member 3B, and the mountain portions 62A and 62C relating to the engaging target of the engaging members 3A and 3B. It is supported by the mountain part 62B arranged between them. With such a structure, the stability when the hardware 100 is installed on the deck plate 60 can be improved.

Further, the hardware 100 according to the present embodiment further includes a regulating member 4 that regulates the movement of the void formwork 53 floating in the concrete 52 within a predetermined region when the concrete 52 is placed on the deck plate 60. .. As a result, the posture of the void form 53 in a state of being supported by the hardware 100 can be stabilized.

Further, the hardware 100 according to the present embodiment is at a position separated from the first engaging member 3A on the positive side in the Y-axis direction with respect to the mountain portion 62A engaged with the first engaging member 3A. From the second engaging member 3B with respect to the mountain portion 62C which is connected to the third engaging member 3C to be engaged and the third engaging member 3C and is engaged with the second engaging member 3B. It includes a fourth engaging member 3D that engages at a position separated from the positive side in the Y-axis direction. As a result, the hardware 100 is supported at four points by the mountain portions 62A and 62C via the engaging members 3A, 3B, 3C and 3D engaged with the mountain portions 62A and 62C in four directions. Will be. Therefore, the stability when the hardware 100 is installed on the deck plate 60 can be improved. The four directions are "negative side in the X-axis direction, negative side in the Y-axis direction (first engaging member 3A)", "positive side in the X-axis direction, and Y-axis" with reference to the central axis CL. Negative side in the direction (second engaging member 3B) "," negative side in the X-axis direction, positive side in the Y-axis direction (third engaging member 3C) "," positive side in the X-axis direction, Y-axis The positive side in the direction (fourth engaging member 3D) ".

Further, the hardware 100 according to the present embodiment is arranged on the upper surface 62a of the mountain portion 62B, further includes a spacer member 1 for separating the upper end portion 100a of the hardware 100 and the upper surface 62a of the mountain portion 62B, and the first engagement. The member 3A, the second engaging member 3B, the third engaging member 3C, and the fourth engaging member 3D are connected to the upper end side of the spacer member 1. By arranging such a spacer member 1 on the upper surface 62a of the mountain portion 62, the upper end portion of the hardware 100 can be arranged at a position higher than the upper surface 62a of the mountain portion 62B. As a result, the reinforcing bar 54 in the concrete 52 provided above the hardware 100 can be arranged at a higher position with respect to the mountain portion 62B. Further, since the engaging members 3A, 3B, 3C, and 3D are connected to the upper end side of the spacer member 1, even if the height of the hardware 100 is increased, the upper end side of the hardware 100 is the engaging member 3A, 3B. It is in a state of being supported at four points by the mountain portions 62A and 62C via 3C and 3D. Thereby, the stability when the hardware 100 is installed on the deck plate 60 can be improved.

Further, the hardware 100 according to the present embodiment is arranged on the upper surface 62a of the mountain portion 62B, further includes a spacer member 1 for separating the upper end portion 100a of the hardware 100 and the upper surface 62a of the mountain portion 62B, and the spacer member 1 is a spacer member 1. The bottom portion 36 extending in the X-axis direction on the bottom side, the pair of side portions 37A and 37B extending upward from both ends of the bottom portion 36, and the pair of side portions 37A and 37B facing toward the center from the upper ends. A pair of upper side portions 38A and 38B, which extend from each other and are connected to each other at the end portion on the central side. By arranging such a spacer member 1 (frame-shaped members 21A, 21B) on the upper surface 62a of the mountain portion 62B, the upper end portion 100a of the hardware 100 can be arranged at a position higher than the upper surface 62a of the mountain portion 62B. As a result, the reinforcing bar 54 in the concrete 52 provided above the hardware 100 can be arranged at a higher position with respect to the mountain portion 62B. Further, since the spacer member 1 has a bottom portion 36 extending in the X-axis direction on the bottom side, stability when arranged on the upper surface 62a of the mountain portion 62B can be improved. Further, since the spacer member 1 includes side side portions 37A, 37B and upper side portions 38A, 38B extending upward from both end sides of the bottom side portion 36, for example, only one member is provided from the center position of the bottom side portion 36. Compared to a configuration that extends, the stability when arranged on the upper surface 62a of the mountain portion 62B can be improved.

The hardware 100 according to the present embodiment is arranged on the upper surface 62a of the mountain portion 62B, and includes a spacer member 1 that separates the upper end portion 100a of the hardware 100 from the upper surface 62a of the mountain portion 62B. By arranging such a spacer member 1 on the upper surface 62a of the mountain portion 62B, the upper end portion 100a of the hardware 100 can be arranged at a position higher than the upper surface 62a of the mountain portion 62B. As a result, the reinforcing bar 54 in the concrete 52 provided above the hardware 100 can be arranged at a higher position with respect to the mountain portion 62B. Further, the hardware 100 includes a first engaging member 3A that engages with the mountain portion 62A that is separated from the mountain portion 62B on which the spacer member 1 is arranged on the negative side in the X-axis direction, and the metal portion 100 in the X-axis direction from the mountain portion 62B. The Y-axis from the first engaging member 3A with respect to the second engaging member 3B engaged with the mountain portion 62C separated to the positive side and the mountain portion 62A engaged with the first engaging member 3A. The second engaging member 3B to Y with respect to the third engaging member 3C engaged at a position separated from the positive side in the direction and the mountain portion 62C engaged with the second engaging member 3B. It includes a fourth engaging member 3D that engages at a position separated from the positive side in the axial direction. Further, the first engaging member 3A, the second engaging member 3B, the third engaging member 3C, and the fourth engaging member 3D are connected to the spacer member 1. With such a configuration, the spacer member 1 has four points at the mountain portions 62A and 62C via the engaging members 3A, 3B, 3C and 3D engaged with the mountain portions 62A and 62C in four directions. It will be in a supported state. In this way, since the spacer member 1 having a height is supported at four points, a load is applied from either the X-axis direction or the Y-axis direction (and the diagonal direction between the X-axis direction and the Y-axis direction). Even in this case, the spacer member 1 can be supported by resisting the load. Further, when the hardware 100 is attached, the engaging members 3A, 3B, 3C, and 3D may be engaged with the mountain portions 62A, 62C, so that the fitting members 100 can be easily installed unlike welding or the like. As described above, in the hardware 100 for arranging the reinforcing bar 54 at a position higher than the formwork (here, the deck plate 60) in the concrete 52, the posture stability at the time of installation is stable while having a simple structure that does not require time and effort for installation. Can be improved.

Further, the hardware 100 according to the present embodiment includes a first connecting member 6A that connects between the first engaging member 3A and the third engaging member 3C, a second engaging member 3B, and a fourth. A second connecting member 6B for connecting to and from the engaging member 3D of the above is further provided. As a result, the first engaging member 3A and the third engaging member 3C are connected by the first connecting member 6A, so that the first engaging member 3A and the third engaging member 3A when a load is applied are applied. Deformation of the engaging member 3C can be suppressed. Further, the second engaging member 3B and the fourth engaging member 3D are connected by the second connecting member 6B, so that the second engaging member 3B and the fourth engaging member 3B and the fourth engaging member 3B when a load is applied are connected. Deformation of the engaging member 3D can be suppressed.

Further, the hardware 100 according to the present embodiment has a first receiving member 7A arranged so as to sandwich the mountain portion 62A with the first engaging member 3A in the X-axis direction, and a second engaging member. The mountain portion 62A is arranged so as to be sandwiched in the X-axis direction between the second receiving member 7B arranged so as to sandwich the mountain portion 62C in the X-axis direction with the 3B and the third engaging member 3C. A third receiving member 7C to be formed and a fourth receiving member 7D arranged so as to sandwich the mountain portion 62C in the X-axis direction between the third receiving member 7C and the fourth engaging member 3D are provided. As a result, when the engaging members 3A, 3B, 3C, 3D are about to come off from the mountain portions 62A, 62C, the receiving members 7A, 7B, 7C, 7D can receive the mountain portions 62A, 62C. It is possible to suppress the disengagement of the engaging members 3A, 3B, 3C, and 3D.

Further, in the hardware 100 according to the present embodiment, the first engaging member 3A, the second engaging member 3B, the third engaging member 3C, and the fourth engaging member 3D have their respective mountain portions 62A. , 62C is engaged from the outside in the X-axis direction. After the hardware 100 is installed on the deck plate 60 (for example, when a worker or a material is caught so as to scoop up the hardware), an upward force may act on the hardware 100 depending on the working environment. In this case, the engaging members 3A, 3B, 3C, and 3D are deformed so as to be convex upward as a whole. As a result, in the engaging members 3A, 3B, 3C, 3D, the portion (hook portion) engaged with the mountain portions 62A, 62C from the outside is located inside in the X-axis direction, that is, in the direction toward the mountain portions 62A, 62C. Force acts. As a result, the engaging force of the engaging members 3A, 3B, 3C, 3D with respect to the mountain portions 62A, 62B is improved.

[Second Embodiment]
The hardware 200 according to the second embodiment will be described with reference to FIG. The hardware 200 according to the second embodiment is provided with one third frame-shaped member 21C in place of the first frame-shaped member 21A and the second frame-shaped member 21B, according to the first embodiment. It is mainly different from the hardware 100 according to the above. The third frame-shaped member 21C is fixed to the central position of the upper connecting member 22 in the Y-axis direction. Since the shape of the third frame-shaped member 21C is the same as that of the frame-shaped members 21A and 21B, the description thereof will be omitted. Along with this, the first void formwork receiving member 20A is fixed to the upper connecting member 22 via the connecting member 70A. The second void formwork receiving member 20B is fixed to the upper connecting member 22 via the connecting member 70B. The connecting member 70A is bent in a triangular shape so as to have a top at the center position in the X-axis direction, and is fixed to the negative end of the upper connecting member 22 in the Y-axis direction at the top, and is fixed in the X-axis direction. Both ends are fixed to the first void formwork receiving member 20A. The connecting member 70B is bent in a triangular shape so as to have a top at the center position in the X-axis direction, and is fixed to the positive end of the upper connecting member 22 in the Y-axis direction at the top, and is fixed in the X-axis direction. It is fixed to the second void formwork receiving member 20A at both ends.

In the hardware 200 according to the second embodiment, since the hardware 200 is supported by the upper surface 62a of the mountain portion 62B only at one place of the third frame-shaped member 21C, the third frame-shaped member 21C is in the Y-axis direction of the hardware 200. You cannot maintain your posture. Therefore, the third frame-shaped member 21C functions as the spacer member 1, but does not function as the support member 2. Therefore, the first void formwork receiving member 20A and the second void formwork receiving member 20B function as the support member 2.

[Third Embodiment]
The hardware 300 according to the third embodiment will be described with reference to FIG. The hardware 300 according to the third embodiment has one third void formwork member 20C instead of the first void formwork member 20A and the second void formwork member 20B. It is mainly different from the hardware 100 according to the first embodiment. That is, the hardware 300 has only the first engaging member 3A and the second engaging member 3B, and does not have the third engaging member 3C and the fourth engaging member 3D.

The hardware 300 includes a third void formwork receiving member 20C, a connecting member 72, and a connecting member 73. The third void formwork receiving member 20C has the same configuration as the void formwork receiving members 20A and 20B except that the hardware 300 is arranged at the center position in the Y-axis direction.

The connecting member 72 has a horizontal portion 74 extending in the Y-axis direction at a central position in the X-axis direction at a position higher than the horizontal portion 31 of the third void type frame receiving member 20C, and a horizontal portion 74 in the Y-axis direction. A leg portion 75A extending downward from the negative end portion and a leg portion 75B extending downward from the positive end portion of the horizontal portion 74 in the Y-axis direction are provided. The lower ends of the legs 75A and 75B are bent outward in the Y-axis direction. The central position of the horizontal portion 74 in the Y-axis direction is connected to the third void formwork receiving member 20C via the connecting member 73. The lower ends of the legs 75A and 75B are supported by the upper surface 62a of the mountain portion 62B. Such a connecting member 72 functions as a support member 2 that maintains the posture of the hardware 300 in the Y-axis direction when only a pair of engaging members 3A and 3B are provided.

The connecting member 73 has inclined portions 76A and 76B extending diagonally downward from the horizontal portion 74 of the connecting member 72 toward the outside in the X-axis direction, and from the lower ends of the inclined portions 76A and 76B toward the inside in the X-axis direction. It is provided with receiving portions 77A and 77B extending diagonally downward. It is fixed to the horizontal portion 31 of the third void formwork receiving member 20C at the joint position between the inclined portions 76A and 76B and the receiving portions 77A and 77B. The receiving portions 77A and 77B regulate the movement of the floating void formwork 53 in the X-axis direction with the inclined portions 32A and 32B. That is, the inclined portions 32A and 32B function as the regulating member 4.

[Fourth Embodiment]
The hardware 400 according to the fourth embodiment will be described with reference to FIGS. 7 and 8. The hardware 400 according to the fourth embodiment is different from the hardware 300 according to the third embodiment in that it has the connecting members 78A and 78B instead of the connecting member 73. The connecting member 78A includes an inclined portion 81, an inclined portion 82, a vertical portion 83, and a holding portion 84. The inclined portion 81 is a third void mold receiver downward from the negative end side of the horizontal portion 74 of the connecting member 72 in the Y-axis direction toward the negative side in the X-axis direction and the positive side in the Y-axis direction. It extends to the horizontal portion 31 of the member 20C. The inclined portion 82 extends downward from the lower end portion of the inclined portion 81 toward the positive side in the X-axis direction and the positive side in the Y-axis direction. The lower end portion of the inclined portion 82 is arranged at a position separated from the central axis CL on the negative side in the X-axis direction. The vertical portion 83 extends downward from the lower end portion of the inclined portion 82. The vertical portion 83 extends to the position of the enlarged portion 64 of the mountain portion 62B. The pressing portion 84 extends downward from the lower end portion of the vertical portion 83 toward the positive side in the X-axis direction. The pressing portion 84 presses the vertical portion 63 of the mountain portion 62B from the negative side in the X-axis direction. The connecting member 78B is arranged when the connecting member 78A is rotated by 180 ° about the central axis CL. As a result, the connecting member 78B presses the vertical portion 63 of the mountain portion 62B from the positive side in the X-axis direction. Since the connecting member 78B has the same structure as the connecting member 78A, the description thereof will be omitted. The vertical portions 83, 83 of the connecting members 78A, 78B restrict the movement of the floating void formwork 53 in the X-axis direction with the inclined portions 32A, 32B. That is, the vertical portions 83 and 83 function as the regulating member 4.

[Fifth Embodiment]
The support structure 250 of the void formwork 53 using the hardware 500 according to the fifth embodiment will be described with reference to FIGS. 10 and 11. The support structure 250 includes a hardware 500 and a lower hardware 251. The hardware 500 has a configuration having substantially the same meaning as the hardware 100 according to the first embodiment. Therefore, the hardware 500 includes a first engaging member 3A that engages with the mountain portion 62A, and a second engaging member 3B that engages with the mountain portion 62C that is different from the first engaging member 3A. ing. The second engaging member 3B is connected to the first engaging member 3A. Further, the hardware 500 includes a third engaging member 3C that engages with the mountain portion 62A, and a fourth engaging member 3D that engages with the mountain portion 62C different from the third engaging member 3C. ing. Further, the fourth engaging member 3D is connected to the third engaging member 3C.

The lower metal fitting 251 is a metal fitting that is attached to the deck plate 60 and supports the void formwork 53. The lower metal fitting 251 is bridged between the mountain portion 62A to which the engaging members 3A and 3C are engaged and the mountain portion 62C to which the engaging members 3B and 3D are engaged, and is sandwiched between the mountain portions 62A and 62C. Supports the void formwork 53. The lower hardware 251 is arranged at a position deviated from the hardware 500 in the Y-axis direction (see FIG. 10). In the present embodiment, the lower metal fitting 251 is arranged at a position shifted to the positive side in the Y-axis direction with respect to the metal fitting 500. However, the position of the lower hardware 251 with respect to the hardware 500 is not particularly limited, and may be arranged in any way. For example, the lower hardware 251 may be arranged at a position shifted to the negative side in the Y-axis direction with respect to the hardware 500, or may be arranged directly below the hardware 500.

The lower metal fitting 251 is composed of a wire rod extending in the X-axis direction so as to be bridged over the mountain portions 62A, 62B, 62C. The lower metal fitting 251 has relay portions 261,262A and 262B, positioning portions 264A and 264B, and engaging portions 266A and 266B. The engaging portions 266A and 266B may be omitted as appropriate.

The relay unit 261 is a portion that relays the positioning unit 264A and the positioning unit 264B. The relay portion 261 is supported on the central mountain portion 62B. The relay unit 262A is a portion that relays the positioning unit 264A and the engaging unit 266A. The relay portion 262A is supported on the mountain portion 62A on the negative side in the X-axis direction. The relay unit 262B is a portion that relays the positioning unit 264B and the engaging unit 266B. The relay portion 262B is supported on the mountain portion 62C on the positive side in the X-axis direction. In the present embodiment, the relay portions 261,262A and 262B extend straight in the X-axis direction.

The positioning portions 264A and 264B position the void formwork 53 in the X-axis direction. The positioning unit 264A positions the void formwork 53 between the mountain portion 62A and the mountain portion 62B. The positioning portion 264A positions the void formwork 53 at a position surrounded by the inclined portions 32A and the horizontal portions 31 of the void formwork receiving members 20A and 20B of the hardware 500 and the frame-shaped members 21A and 21B. The positioning portion 264B positions the void formwork 53 at a position surrounded by the inclined portions 32B and the horizontal portions 31 of the void formwork receiving members 20A and 20B of the hardware 500 and the frame-shaped members 21A and 21B. The positioning portions 264A and 264B position the void formwork 53 at positions separated downward from the horizontal portion 31.

The positioning portions 264A and 264B are configured by the members constituting the lower metal fitting 251 becoming concave downward. The positioning portions 264A and 264B are configured by bending a wire rod extending in the X-axis direction at an intermediate position in the X-axis direction. The positioning portions 264A and 264B have a V-shaped shape that is concave downward. The positioning unit 264A positions the void formwork 53 by bringing the corner portion between the relay portion 261 and the relay portion 262A into contact with the side peripheral surface of the void formwork 53. The positioning unit 264B positions the void formwork 53 by bringing the corners between the relay unit 261 and the relay unit 262B into contact with the side peripheral surface of the void formwork 53. That is, the positioning portions 264A and 264B position the void formwork 53 by two-point support.

When the dimension of the opening portion of the positioning portions 264A and 264B, that is, the upper end portion of the V-shaped portion in the X-axis direction is "a", and the diameter of the void form 53 is "D", "1 /". It is preferable that the relationship "3 ≦ a / D ≦ 1" is established. As a result, the void formwork 53 is positioned by the positioning portions 264A and 264B so as not to roll.

The bottom portions of the positioning portions 264A and 264B are bent in a V shape. Therefore, although not shown, fireproof reinforcing bars may be arranged at the bottoms of the positioning portions 264A and 264B. When the refractory reinforcing bar is arranged, the refractory reinforcing bar of the positioning portion 264A extends in the space between the mountain portion 62A and the mountain portion 62B in the Y-axis direction. The refractory reinforcing bar of the positioning portion 264B extends in the space between the mountain portion 62B and the mountain portion 62C in the Y-axis direction. The refractory reinforcing bars of the positioning portions 264A and 264B are supported by the positioning portions of other lower hardware (not shown).

The engaging portion 266A engages with the mountain portion 62A on the negative side in the X-axis direction. The engaging portion 266A has a configuration to the same effect as the hook portion 34A of the hardware 100. That is, the engaging portion 266A is arranged so as to wrap around the upper surface 62a of the mountain portion 62A from the end portion on the negative side in the X-axis direction and face the side surface 64a on the negative side in the X-axis direction of the enlarged portion 64. .. The engaging portion 266B engages with the mountain portion 62C on the positive side in the X-axis direction. The engaging portion 266B has the same configuration as the hook portion 34B of the hardware 100. That is, the engaging portion 266B is arranged so as to wrap around the upper surface 62a of the mountain portion 62C from the end portion on the positive side in the X-axis direction and face the side surface 64a on the positive side in the X-axis direction of the enlarged portion 64. ..

As described above, the hardware 500 of the support structure 250 according to the present embodiment engages the first engaging member 3A that engages with the mountain portion 62A and the mountain portion 62C that is different from the first engaging member 3A. The second engaging member 3B and the like are provided. Further, the second engaging member 3B is connected to the first engaging member 3A. With such a structure, the first engaging member 3A is engaged with one mountain portion 62A, the second engaging member 3B is engaged with the other mountain portion 62C, and those mountain portions are engaged. Between 62A and 62C, the first engaging member 3A and the second engaging member 3B connected to each other are bridged. Therefore, by engaging the engaging members 3A and 3B with the mountain portions 62A and 62C and installing them in advance before placing the concrete, the concrete is bridged between the mountain portions 62A and 62C at the time of placing. A pair of void formwork 53 that has emerged can be supported at the portion.

Here, as shown by the virtual line of FIG. 11, a case where the void formwork 53 is installed on the bottom surface portion 61 of the deck plate 60 before the concrete is placed will be described. In this case, the void formwork 53 is installed on the bottom surface portion 61 in the space between the mountain portion 62A and the mountain portion 62B. In the space between the mountain portion 62B and the mountain portion 62C, the void formwork 53 is installed on the bottom surface portion 61. In such an arrangement, the gap between the mountain portions 62A, 62B, 62C and the void formwork 53 becomes small. That is, it becomes difficult for concrete to enter the space between the mountain portion 62A and the mountain portion 62B and the space between the mountain portion 62B and the mountain portion 62C. This may make it difficult to fill the underside of the void formwork 53 with concrete. Or, the concrete may be difficult to stir. As described above, when the concrete cannot be properly filled in the lower part of the void formwork 53, not only the void formwork 53 cannot be fixed in a predetermined position but also the concrete is poorly placed.

On the other hand, the support structure 250 according to the present embodiment includes a lower metal fitting 251 that is attached to the deck plate 60 and supports the void formwork 53. The lower metal fitting 251 is bridged between the mountain portion 62A with which the first engaging member 3A is engaged and the mountain portion 62C with which the second engaging member 3B is engaged, and is between the mountain portions 62A and 62C. Supports the void formwork 53 at. Therefore, the lower metal fitting 251 can support the void formwork 53 at a position above the bottom surface portion 61 of the deck plate 60, and can easily fill the lower side of the void formwork 53 with concrete. Specifically, the gap between one void formwork 53 and the mountain portions 62A, 62B, the gap between the other void formwork 53 and the mountain portions 62B, 62C, and the void formwork 53 and the bottom surface on both sides. The gap between the portion 61 and the portion 61 becomes sufficiently large. Therefore, the concrete easily flows into each gap, and the flow and stirring of the concrete become easy. Therefore, an appropriate buoyancy is generated in the void formwork 53 during concrete placement, and the construction quality can be ensured. As described above, it is possible to sufficiently prevent the void formwork 53 from floating while having a simple structure that does not require much labor for installation.

Further, in the support structure 250 according to the present embodiment, the lower metal fitting 251 has positioning portions 264A and 264B for positioning the void formwork 53 in the X-axis direction. Thereby, when the lower metal fitting 251 supports the void formwork 53, it is possible to prevent the position of the void formwork 53 from being displaced.

Further, in the support structure 250 according to the present embodiment, the positioning portions 264A and 264B are configured by the lower metal fitting 251 becoming concave downward. As a result, the void formwork 53 can be positioned without providing an additional member on the lower metal fitting 251. Further, since the refractory reinforcing bars can be arranged at the bottoms of the positioning portions 264A and 264B, the refractory reinforcing bars are arranged at positions where they do not interfere with the void form 53. As a result, it is possible to prevent the void formwork 53 from coming into contact with the refractory reinforcing bars and disturbing the arrangement. Further, it is not necessary to separately provide a spacer dedicated to the refractory reinforcing bar.

Further, in the support structure 250 according to the present embodiment, the lower metal fitting 251 has engaging portions 266A and 266B that engage with the mountain portions 62A and 62C. As a result, it is possible to prevent the lower metal fitting 251 from shifting with respect to the mountain portions 62A and 62C.

Although the embodiments according to the present invention have been described above, the present invention is not limited to the above-described embodiments. That is, the combination of wire rods and the shape of each wire rod may be appropriately changed without departing from the spirit of the present invention.

For example, the hook portion of the engaging member 3 that constitutes the portion that engages with the mountain portion may have any shape. Further, in the above-described embodiment, the engaging member 3 is engaged with the mountain portion from the outside in the X-axis direction, but may be engaged from the inside as shown in FIG. 9A. FIG. 9A is an enlarged view of a portion corresponding to the first engaging member. The hook portion 150 extends downward from the tip of the horizontal portion 149 extending inward in the X-axis direction on the upper surface 62a of the mountain portion 62A, and engages with the inner side surface 64b of the enlarged portion 64 in the X-axis direction. For example, when a force that pushes the hardware 100 from above to below acts, the entire void formwork receiving member is pushed downward. In this case, the void formwork receiving member is deformed so as to spread outward in the X-axis direction as a whole. Therefore, the engaging member that is engaged with the mountain portion 62 from the inside in the X-axis direction is more firmly engaged with the mountain portion 62.

Further, as shown in FIG. 9B, an L-shaped hook portion 151 may be adopted. Further, as shown in FIG. 9C, a hook portion 152 that bends at an obtuse angle may be adopted. Further, the shape of the mountain portion is not particularly limited, and the shape of the hook portion of the engaging member may be set according to the shape of the mountain portion. For example, as shown in FIG. 9D, when the side surface 164a of the mountain portion 164 is inclined and the convex portion 164b is formed at the lower end of the side surface 164a, the hook portion 153 is attached to the side surface 164a. It may be inclined along and bent so that the lower end portion is caught by the convex portion 164b.

The hardware according to the above-described embodiment was attached to the three mountain portions 62. Instead of this, hardware attached to the two mountain portions 62 may be adopted. In this case, the support member 2 is supported by the mountain portion to which the engaging member 3 is engaged.

In the above-described embodiment, the movement of the void formwork 53 in the X-axis direction is restricted by the regulating member 4. However, the configuration corresponding to the regulation member 4 may be omitted. That is, it suffices if at least the floating of the void formwork 53 can be prevented. Further, the receiving member 7 may also be omitted.

The shape of the metal fitting is not limited to that shown in FIGS. 10 and 11. For example, a lower metal fitting 351 such as the support structure 350 shown in FIG. 12 may be adopted. The relay portions 361, 362A and 362B of the lower metal fitting 351 are inclined so that the positions of the positioning portions 264A and 264B are high. Specifically, the relay portion 362A is inclined so as to be lifted upward from the portion supported by the mountain portion 62A toward the positioning portion 264A. The relay portion 362B is inclined so as to be lifted upward from the portion supported by the mountain portion 62C toward the positioning portion 264B. The relay portion 361 is inclined so as to be lifted upward toward the positioning portion 264A from the central position (the portion supported by the mountain portion 62B) in the X-axis direction, and is inclined so as to be lifted upward toward the positioning portion 264B. do.

Further, the positioning portion of the lower metal fitting is not limited to the one in which the wire rod is bent in a V shape as shown in FIGS. 10 to 12. For example, the positioning portion may have a shape in which the wire rod is bent into a rectangular shape or another polygonal shape. Further, the positioning portion may be configured by attaching another member to a wire rod extending in the X-axis direction. For example, the positioning portion may be configured by attaching a pair of positioning members extending upward in a state of being separated from each other in the X-axis direction with respect to the wire rod extending in the X-axis direction. In this case, the void formwork 53 is positioned between the pair of positioning members. However, when the positioning portion is configured by bending the wire rod, it is possible to obtain the effect that the number of members can be reduced and the refractory reinforcing bar can be arranged on the lower side.

1 ... Spacer member, 2 ... Support member, 3A ... First engagement member, 3B ... Second engagement member, 3C ... Third engagement member, 3D ... Fourth engagement member, 4 ... Regulatory member , 6A ... 1st connecting member, 6B ... 2nd connecting member, 7A ... 1st receiving member, 7B ... 2nd receiving member, 7C ... 3rd receiving member, 7D ... 4th receiving member, 52 ... Concrete, 53 ... Void formwork, 60 ... Deck plate, 62 ... Yamabe, 100, 200, 300, 400 ... Hardware.

Claims (11)

A hardware that is arranged so as to be separated from each other in the first direction, and is attached to a deck plate having a plurality of peaks extending upward and extending in a second direction which is a horizontal direction orthogonal to the first direction. ,
The first engaging member that engages with the mountain portion and
A second engaging member that is connected to the first engaging member and engages with the mountain portion that is different from the first engaging member.
A hardware that is supported by the mountain portion and includes a support member that maintains the posture of the hardware in the second direction. The hardware according to claim 1, wherein the first engaging member and the second engaging member engage with each of the mountain portions from the outside in the first direction. At least one mountain portion is provided between the mountain portion engaged with the first engaging member and the mountain portion engaged with the second engaging member.
The hardware according to claim 1 or 2, wherein the support member is supported by the first engaging member and the mountain portion that is not engaged with the second engaging member. The hardware according to claim 3, further comprising a regulating member that regulates the movement of the void formwork floating in the concrete within a predetermined area when the concrete is placed on the deck plate. A third engaging member that engages with the mountain portion engaged with the first engaging member at a position separated from the first engaging member on one side in the second direction. When,
A position separated from the second engaging member on one side in the second direction with respect to the mountain portion connected to the third engaging member and engaged with the second engaging member. The hardware according to any one of claims 1 to 4, further comprising a fourth engaging member to be engaged with. Further provided with a spacer member arranged on the upper surface of the mountain portion and separating the upper end portion of the hardware and the upper surface of the mountain portion.
5. The fifth aspect of the present invention, wherein the first engaging member, the second engaging member, the third engaging member, and the fourth engaging member are connected to the upper end side of the spacer member. Hardware. Further provided with a spacer member arranged on the upper surface of the mountain portion and separating the upper end portion of the hardware and the upper surface of the mountain portion.
The spacer member is
The bottom portion extending in the first direction on the bottom side,
A pair of side edges extending upward from both ends of the bottom edge,
6. The listed hardware. The void formwork is supported in a deck plate having a plurality of peaks arranged so as to be separated from each other in the first direction and extending upward in a horizontal direction orthogonal to the first direction. It is a support structure
The hardware attached to the deck plate and
With a metal fitting attached to the deck plate and supporting the void formwork,
The hardware is
The first engaging member that engages with the mountain portion and
A second engaging member, which is connected to the first engaging member and engages with the mountain portion different from the first engaging member, is provided.
The lower metal fitting is bridged between the mountain portion with which the first engaging member is engaged and the mountain portion with which the second engaging member is engaged, and the lower metal fitting is bridged between the mountain portions. A support structure that supports the void formwork. The support structure according to claim 8, wherein the lower metal fitting has a positioning portion for positioning the void formwork in the first direction. The support structure according to claim 9, wherein the positioning portion is formed by forming a member constituting the lower hardware to be concave downward. The support structure according to any one of claims 8 to 10, wherein the lower metal fitting has an engaging portion that engages with the mountain portion.

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