JP6715111B2 - Formwork structure and construction method of structure - Google Patents

Description

The present invention relates to a formwork structure and a method for constructing a structure using the formwork structure.

As shown in FIG. 12, in a concrete joint portion between a side wall 101 made of reinforced concrete and a floor slab 105, a reinforcing bar 103 protruding substantially horizontally from the side wall 101 may be embedded in the floor slab 105 (for example, Patent Document 1). reference).

At the time of forming the side wall 101, for example, as shown in FIG. 13A, when the concrete of the side wall 101 is placed by arranging the inside of the form 109, the mechanical joint 107 is brought into contact with the inner surface of the form 109. The mechanical joint 107 is connected to the horizontal reinforcing bar 103a in the side wall 101. After pouring the concrete, the form 109 is removed, and the horizontal joint of the mechanical joint 107 is connected to the concrete for the floor slab 105 to form the floor slab 105 in which the rebar is embedded in the concrete.

Alternatively, as shown in FIG. 13B, a wire mesh 117 such as a mesh mold, a lath wire mesh, and a hexagonal wire mesh is used as an embedded mold, and the reinforcing bars 103 penetrate through the wire mesh 117 and project toward the floor slab 105 side. Then, the concrete of the side wall 101 is placed. After this, the concrete of the floor slab 105 is cast to form the floor slab 105 in which the reinforcing bars 103 are embedded in the concrete. In this example, a lap joint can be formed between the reinforcing bar 103 protruding from the side wall 101 and a substantially horizontal reinforcing bar (not shown) embedded in the floor slab 105.

On the other hand, Patent Document 1 describes an example in which a mold provided with a hole for inserting a reinforcing bar is used for a concrete jointing portion, and as shown in FIG. There is also a case where a wooden form frame 121 provided with is used.

In the example of FIG. 13C, the molds 121 are arranged vertically and holes are formed by the notches 122 of both molds 121, and the reinforcing bars 103 are inserted into the holes to project to the floor slab 105 side to form the side wall 101. Pour concrete. After pouring the concrete, the form 121 is removed and the concrete of the floor slab 105 is poured to form the floor slab 105 in which the reinforcing bars 103 are embedded in the concrete. Also in this example, a lap joint can be formed between the reinforcing bar 103 protruding from the side wall 101 and a substantially horizontal reinforcing bar (not shown) embedded in the floor slab 105.

JP 2001-73556 A

In the example of FIG. 13A, the cost of the mechanical joint 107 is high, and the rebars used are limited to expensive screw rebars. In addition, there is a case where the mold 109 is caught by the pouring pressure of concrete and the mortar is covered with the mechanical joint 107. In this case, after removing the mold 109, it is necessary to peel off the mortar covered with the mechanical joint 107. There is. As a countermeasure, there is a method of fastening the form 109 to the mechanical joint 107 using a bolt or the like, but it takes time and effort.

In the example of FIG. 13B, the concrete aggregate of the placed side wall 101 is clogged with the wire net 117 to prevent the mortar from flowing out. However, when the mortar flows out because the piercing part of the reinforcing bar 103 or the connecting part of the wire net 117 and the form 109 is not surely blocked, post-treatment such as cleaning the rebar 103 or the wire net 117 to remove the mortar is required. It often takes a lot of time and effort.

Even when the reinforcing bar is inserted into the hole of the form as shown in FIG. 13C, the mortar may flow out from the gap between the form and the reinforcing bar, and cleaning of the reinforcing bar is often necessary. .. In the example of FIG. 13(c), the gap between the form 121 and the reinforcing bar 103 can be closed by using a piece of wood or a waste cloth, but if the piece of wood or waste cloth bites into the placed concrete, the concrete is chipped. However, it is necessary to remove wood chips and waste cloth.

The present invention has been made in view of the above problems, and an object thereof is to provide a formwork structure or the like that facilitates the construction of a structure.

A first invention for achieving the above-mentioned object is a formwork structure used at a place where a reinforcing bar projects in a substantially horizontal direction from the structural body when pouring concrete of the structural body. comprising a plurality of resilient mold is allowable combinations as rebar insertion hole in which to insert is formed, and pressurizing means for pressurizing a plurality of the elastic mold in the reinforcing bar side, the a, the pressure The pressure means is a formwork structure characterized by narrowing the interval between members arranged so as to sandwich the plurality of elastic formwork in a direction orthogonal to the axial direction of the reinforcing bar .

In the present invention, a plurality of elastic molds that can be combined so as to form the reinforcing bar insertion holes for inserting the reinforcing bars are used, and the elastic molds are pressed to the reinforcing bar side by the pressurizing means and compressed. Reinforcement can be fixed by the restoring force of. This prevents the formation of a gap between the reinforcing bar and the elastic formwork, prevents the mortar component of concrete from leaking out of the gap, reduces the post-treatment work, and facilitates the construction of the structure. it can. Further, the reinforcing bars protruding from the structure in the substantially horizontal direction can be used for the lap joint, and the screw reinforcing bars and mechanical joints are not required, and the joints can be formed at low cost.

The reinforcing bar insertion hole has a substantially circular shape, and the diameter of the reinforcing bar insertion hole is smaller than the diameter of the reinforcing bar. The elastic form is made of rubber.
Since the diameter of the reinforcing bar insertion hole that can be formed by combining elastic formwork is smaller than the diameter of the reinforcing bar, the elastic formwork deforms according to the size of the reinforcing bar when the elastic formwork is pressed, and the elastic force is generated by the restoring force. The frame and the reinforcing bar can be brought into close contact with each other, and a gap can be reliably prevented from occurring between the elastic form and the reinforcing bar. Further, by making the elastic form made of rubber, the elastic form does not bite into the concrete, and the elastic form can be easily removed without chipping or the like.

The elastic form is, for example, a substantially rectangular plate member provided with a substantially semicircular cutout, and the two elastic forms are combined to form the rebar insertion holes by the cutouts of both elastic forms. It is possible.
The pressurizing means is, for example, a binding material that presses the elastic mold by clamping two molds provided with the elastic mold sandwiched therebetween.
In this way, by forming the elastic formwork into a substantially rectangular plate material, commonly used formwork is used on both sides of the elastic formwork, and the elastic formwork is pressed by tightening the formwork with a binding material. It will be possible. When the elastic molds are pressed, the elastic molds and the molds also come into close contact with each other, so that the mortar component of concrete does not leak from the gap between the elastic molds.

The second inventions, when pouring the concrete structure, a mold structure used in place of reinforcing bars projecting substantially horizontally from the structure, rebar insertion for inserting the rebar A plurality of elastic molds that can be combined to form holes, pressurizing means for pressing the plurality of elastic molds toward the reinforcing bars , and holes for arranging the elastic molds are formed. a mold structure characterized by comprising a plurality of auxiliary formwork can be combined so that, a.
The pressing means is, for example, a binding material that tightens the two auxiliary molds that can be combined to form the hole and presses the elastic mold arranged in the hole.
As described above, it is possible to form a hole for arranging the elastic formwork by combining a plurality of auxiliary formworks and dispose the elastic formwork in the hole. Can be pressurized. In this case, the area occupied by the elastic mold can be reduced, and the rigidity of the mold structure as a whole can be increased.

For example, when a plurality of the elastic molds are combined so that the reinforcing bar insertion holes are formed, the outer periphery thereof is substantially circular, and when the plurality of auxiliary molds are combined, the holes formed are substantially circular. ..
Alternatively, when a plurality of the elastic molds are combined so that the reinforcing bar insertion holes are formed, the outer periphery thereof has a substantially square shape, and when the plurality of auxiliary molds are combined, the holes formed have a substantially square shape. Is.
As described above, the shapes of the elastic mold and the auxiliary mold can be variously determined in consideration of workability, cost, and the like.

3rd invention uses the formwork structure of 1st or 2nd invention in the location which a reinforcing bar protrudes substantially horizontally from a 1st structure, and the process of pouring concrete of a 1st structure, After placing the concrete of the first structure, the step of removing the formwork structure, and the reinforcing bars arranged so that a lap joint is formed between the reinforcing bars and the reinforcing bars are embedded in the concrete. And a step of forming a second structure, which is a method for constructing a structure.

According to the present invention, it is possible to provide a formwork structure or the like that facilitates the construction of a structure.

The figure which shows the outline of the construction method of the side wall 1 and the floor slab 2 using the formwork structure 10. The figure which shows the formwork structure 10. Diagram showing elastic form 7 The figure explaining the formation method of the formwork structure 10. The figure explaining the formation method of the formwork structure 10. The figure which shows the formwork structure 10a Diagram showing elastic form 4 and auxiliary form 5 The figure explaining the formation method of the formwork structure 10a. The figure explaining the formation method of the formwork structure 10a. The figure which shows elastic formwork 4a, 4a', 4b and auxiliary formwork 5'. The figure which shows the formwork structure 10b The figure which shows the concrete splicing part of the side wall 101 and the floor slab 105. The figure which shows the formwork in the concrete splicing part of the side wall 101 and the floor slab 105.

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

[First Embodiment]
(1. Outline of construction method of side wall 1 and floor slab 2 using formwork structure 10)
FIG. 1 is a diagram showing an outline of a method of constructing a side wall 1 (first structure) and a floor slab 2 (second structure) using a formwork structure 10 according to a first embodiment of the present invention. is there.

As shown in FIG. 1( a ), in the formwork structure 10 of the present embodiment, when the concrete of the side wall 1 is placed by arranging the reinforcement in the form frame 9, the reinforcing bars 3 of the side wall 1 are removed from the side wall 1. It is used in a portion that projects substantially horizontally to the floor slab side (sidewall 1 and concrete splicing portion of the floor slab).

After placing the concrete on the side wall 1, the formwork structure 10 and the formwork 9 are removed, and as shown in FIG. 1B, the floor slab is laid out at the side of the side wall 1, and the concrete is placed on the floor slab. Place a formwork (not shown) for installation. At the time of bar arrangement, the substantially horizontal reinforcing bars 21 are arranged so that a lap joint is formed between the reinforcing bars 3.

Then, when concrete is poured into the above-mentioned mold and the mold is removed, the floor slab 2 is formed as shown in Fig. 1(c). The above-mentioned reinforcing bars 3 and 21 are embedded in the concrete of the floor slab 2.

(2. Formwork structure 10)
FIG. 2 is a view showing the formwork structure 10. 2A is a view showing the front of the formwork structure 10 as viewed from the left side of FIG. 1A, and FIG. 2B is a vertical direction along line AA of FIG. 2A. It is a figure which shows the cross section of. The above also applies to FIGS. 4 and 5 described later.

The formwork structure 10 is composed of an elastic formwork 7, bolts 15, nuts 17 and the like, and holds and fixes a plurality of horizontal reinforcing bars 3 between the upper and lower formwork 9.

The elastic mold 7 is a mold having elasticity. The elastic mold frame 7 is formed of an elastic member, and is made of rubber in this embodiment.

FIG. 3 is a view showing the elastic form 7. The elastic frame 7 is configured by providing a substantially semicircular cutout portion 73 on one side of a substantially rectangular plate material. In this embodiment, when the two elastic molds 7 are vertically combined, the substantially circular reinforcing bar insertion hole 75 for inserting the reinforcing bar 3 can be formed by the notch 73 of both elastic molds 7.

The diameter (diameter) r1 of the reinforcing bar insertion hole 75 is smaller than the diameter of the reinforcing bar 3, but when the elastic formwork 7 is pressed and compressed as will be described later, its deformation matches the reinforcing bar 3 as shown in FIG. The reinforcing bar insertion hole 75 has a size. The reinforcing bar 3 is arranged so as to project from the reinforcing bar insertion hole 75 in a substantially horizontal direction.

The elastic mold 7 is also provided with a through hole 71 that vertically penetrates the elastic mold 7, and when the elastic molds 7 are vertically combined, the positions of the through holes 71 of both elastic molds 7 correspond to each other. It is supposed to do.

The mold 9 is a plate member, and for example, a general steel mold such as metal foam can be used. As shown in FIG. 2, the molds 9 are arranged above and below the elastic molds 7 so as to sandwich the upper and lower elastic molds 7, respectively.

The mold 9 has ribs 91, and the ribs 91 are arranged according to the elastic mold 7. A hole 93 is formed in the rib 91, and the position of the hole 93 corresponds to the position of the through hole 71 of the elastic frame 7.

The bolt 15 (binding material) is passed through the through hole 71 of each elastic frame 7 and the hole 93 of the rib 91 of each frame 9, and the nut 17 is tightened at the tip thereof. As a result, the two molds 9 are clamped with the elastic mold 7 sandwiched therebetween.

In order to form the mold structure 10, as shown in FIGS. 4A and 4B, first, the elastic mold 7 is placed on the rib 91 of the lower mold 9 with the cutout 73 facing upward. The rebar 3 is placed and placed in the notch 73 of the elastic form 7.

Next, as shown in FIGS. 5A and 5B, the elastic form 7 is placed on the reinforcing bars 3, and the ribs 91 are placed on the elastic form 7 to place the form 9. The elastic form 7 is arranged with the notch 73 at the position of the reinforcing bar 3.

Then, the bolts 15 are passed through the through holes 71 of the upper and lower elastic molds 7 and the holes 93 of the ribs 91 of the upper and lower molds 9, and the nuts 17 are tightened at the ends of the bolts 15, so that the two molds sandwiching the elastic molds 7 are sandwiched. Tighten the frames 9 together.

As a result, the elastic form 7 is pressed and compressed toward the reinforcing bar 3 as shown by the arrow a in FIG. That is, the bolt 15 has a role as a pressurizing means for pressurizing the elastic form 7 toward the reinforcing bar 3. At this time, the notch 73 of the elastic form 7 is deformed according to the shape of the reinforcing bar 3 to form a reinforcing bar insertion hole 75 having a size matching the size of the reinforcing bar 3, and the elastic frame 7 and the reinforcing bar 3 are in close contact with each other. The gap between the elastic form 7 and the reinforcing bar 3 is closed. When the elastic mold 7 is pressed, the elastic mold 7 and the mold 9 are also brought into close contact with each other.

After this, as shown in FIG. 1A, the flow is to pour concrete on the side wall 1. The formwork structure 10 is removed after the concrete is poured. At this time, the nut 17 is loosened, the bolt 15 is removed, and the elastic formwork 7, the formwork 9, and the like are removed. The elastic formwork 7 can be diverted to another location as long as the diameter of the reinforcing bars 3 and the arrangement interval are the same.

In the first embodiment described above, a plurality of elastic molds 7 that can be combined so as to form the reinforcing bar insertion holes 75 for inserting the reinforcing bars 3 are used, and the elastic molds 7 are fixed to the reinforcing bars 3 by bolts 15 or the like. The reinforcing bar 3 can be fixed by the restoring force of the elastic formwork 7 that is pressed to the side and compressed. Thereby, a gap is prevented from being formed between the reinforcing bar 3 and the elastic form 7, the mortar component of the concrete is prevented from leaking out of the gap, the post-treatment work is reduced, and the side wall 1 and the like are easily constructed. It can be carried out. Further, the reinforcing bar 3 protruding from the side wall 1 in a substantially horizontal direction can be used for a lap joint, and a screw bar or a mechanical joint is not required, and the joint can be formed at low cost.

Further, since the diameter of the reinforcing bar insertion hole 75 that can be formed by combining the elastic molds 7 is smaller than the diameter of the reinforcing bar 3, the elastic molds 7 are deformed according to the size of the reinforcing bar 3 when the elastic mold 7 is pressed. Then, the restoring force can bring the elastic formwork 7 and the reinforcing bar 3 into closer contact with each other and reliably prevent a gap from being formed between the elastic formwork 7 and the reinforcing bar 3. Further, by making the elastic form 7 made of rubber, the elastic form 7 does not bite into the concrete, and the elastic form 7 can be easily removed without chipping or the like.

In addition, in the present embodiment, the elastic form frame 7 is a substantially rectangular plate material, so that the commonly used form frames 9 are used on both sides of the elastic form frame 7, and the form frames 9 are connected to each other by using the bolts 15 and the like. It becomes possible to press the elastic form 7 by tightening. When the elastic mold 7 is pressed, the elastic mold 7 and the mold 9 also come into close contact with each other, so that the mortar component of concrete does not leak from the gap between the elastic mold 7 and the mold 9.

However, the present invention is not limited to this. For example, in the present embodiment, the diameter of the reinforcing bar insertion hole 75 that can be formed by combining the elastic formwork 7 is smaller than the diameter of the reinforcing bar 3, but in some cases, these diameters may be the same size. Further, in the present embodiment, the bolt 15 is passed through the through hole 71 of the elastic form 7, but the position of the bolt 15 can be variously determined as long as the elastic form 7 can be pressed to the reinforcing bar 3 side.

Further, although the elastic form 7 is made of rubber in this embodiment, an elastic member such as urethane foam may be used as the elastic form 7 in some cases. Furthermore, the formwork structure 10 of the present embodiment is not limited to the concrete splicing part of the side wall 1 and the floor slab 2, but can be applied to any part where the reinforcing bar projects in a substantially horizontal direction from the structure.

Hereinafter, another example of the present invention will be described as a second embodiment. The second embodiment will mainly describe different points from the first embodiment, and similar points will be denoted by the same reference numerals in the drawings and the like, and description thereof will be omitted.

[Second Embodiment]
FIG. 6 is a diagram showing a formwork structure 10a according to the second embodiment. Similar to FIG. 2A, FIG. 6A is a front view of the mold structure 10a, and FIG. 6B is a vertical cross-sectional view taken along the line BB of FIG. 6A. Is. The above also applies to FIGS. 8 and 9 described later.

The second embodiment is different from the first embodiment in that an elastic form 4 and an auxiliary form 5 are used in combination instead of the elastic form 7 described above. That is, the formwork structure 10a according to the second embodiment includes the elastic formwork 4, the auxiliary formwork 5, the bolts 15, the nuts 17, and the like.

FIG. 7A is a diagram showing the elastic form 4. The elastic form 4 is a member having a substantially arcuate cross section with a central angle of about 180°, and is made of rubber. In the present embodiment, when the two elastic form frames 4 are vertically combined so that the outer peripheries thereof are substantially circular, the inner peripheries of both elastic form frames 4 allow insertion of the substantially circular rebar for inserting the reinforcing bars 3. The holes 41 can be formed.

The diameter r2 of the reinforcing bar insertion hole 41 is smaller than the diameter of the reinforcing bar 3, but when the elastic formwork 4 is pressed and compressed as will be described later, it is deformed to have a size suitable for the reinforcing bar 3 as shown in FIG. It becomes the reinforcing bar insertion hole 41. The reinforcing bar 3 is arranged so as to project from the reinforcing bar insertion hole 41.

FIG. 7B is a diagram showing the auxiliary formwork 5. The auxiliary formwork 5 is provided with a rib 51 on one side of a substantially rectangular plate material, and a substantially semicircular cutout portion 55 and a rib 57 on the opposite side, and is made of, for example, steel. .. Holes 53 and 59 are formed in the ribs 51 and 57, respectively, and the positions of the holes 53 and 59 correspond to the upper and lower sides.

In the present embodiment, the two auxiliary molds 5 are used by being combined vertically. These auxiliary molds 5 are arranged so that the ribs 57 are aligned with each other. At this time, the positions of the holes 59 of the ribs 57 of both auxiliary molds 5 correspond to each other, and the notches 55 of both auxiliary molds 5 form substantially circular holes. 56 is formed. The hole 56 is for arranging the elastic formwork 4 combined in the upper and lower sides, and the diameter r4 thereof is smaller than the diameter r3 of the outer periphery of the elastic formwork 4 (see FIG. 7A) or the diameter r3. It is about the same.

In this embodiment, the diameter r4 of the hole 56 is slightly smaller than the diameter r3 of the outer circumference of the elastic form 4, and as described above, when the elastic form 4 is pressed and compressed, it is deformed as shown in FIG. As shown, the diameter of the outer periphery of the elastic form 4 is set to fit the hole 56.

As shown in FIG. 6, in the mold structure 10a, molds 9 are arranged above and below the auxiliary molds 5 so as to sandwich the upper and lower auxiliary molds 5, respectively.

These molds 9 are arranged with the ribs 91 aligned with the ribs 51 of the auxiliary mold 5. At this time, the positions of the holes 53 of the ribs 51 of the auxiliary mold 5 and the holes 93 of the ribs 91 of the mold 9 correspond to each other.

The bolt 15 is passed through the holes 53 and 59 of the ribs 51 and 57 of each auxiliary mold 5 and the holes 93 of the rib 91 of each mold 9, and the nut 17 is tightened at the tip thereof. As a result, the upper and lower molds 9 and the auxiliary molds 5 are fastened together.

In order to form the mold structure 10a, as shown in FIGS. 8A and 8B, first, the rib 51 is placed on the rib 91 of the lower mold 9, and the auxiliary mold 5 is arranged. Then, the outer periphery of the elastic form 4 is placed on the notch 55 of the auxiliary form 5, and the reinforcing bars 3 are arranged on the inner periphery of the elastic form 4.

Next, as shown in FIGS. 9A and 9B, the inner circumference of the elastic form 4 is placed on the reinforcing bar 3, and the position of the notch 55 is aligned with the outer periphery of the elastic form 4 to be the auxiliary form. Place 5. Further, the rib 91 is placed on the rib 51 of the auxiliary mold 5, and the mold 9 is arranged.

Then, the bolts 15 are passed through the holes 53, 59 of the ribs 51, 57 of the upper and lower auxiliary molds 5 and the holes 93 of the ribs 91 of the upper and lower molds 9, and the nuts 17 are tightened at the tips thereof to form the upper and lower molds. 9 and the auxiliary formwork 5 are tightened together.

As a result, the elastic form 4 is pressed and compressed toward the reinforcing bar 3 as shown by the arrow b in FIG. 6A, and the inner periphery of the elastic form 4 is deformed according to the shape of the reinforcing bar 3. A reinforcing bar insertion hole 41 having a size matching the size of the reinforcing bar 3 is formed, and the elastic form 4 and the reinforcing bar 3 are brought into close contact with each other to close the gap between the elastic form 4 and the reinforcing bar 3. When the elastic mold 4 is pressurized, the outer periphery of the elastic mold 4 becomes a size matching the size of the hole 56 due to the deformation, and the elastic mold 4 and the auxiliary mold 5 are also brought into close contact with each other.

The subsequent procedure is the same as that described in the first embodiment. When removing the mold structure 10a, the nut 17 is loosened to remove the bolt 15, and the elastic mold 4, the auxiliary mold 5, the mold 9, and the like. Should be removed. The elastic form 4 can be diverted to another place if the diameter of the reinforcing bars 3 is the same, and the auxiliary form 5 can be diverted to another place if the arrangement intervals of the reinforcing bars 3 are the same. It is possible.

Also in the second embodiment, the same effect as that of the first embodiment can be obtained. In addition, in the second embodiment, the area occupied by the elastic mold 4 can be reduced, and the rigidity of the mold structure 10a as a whole can be increased.

In the present embodiment, the bolt 15 or the like is used as the pressing means for the elastic form 4, but the pressing means is not limited to this. For example, by sandwiching the ribs 57 of the upper and lower auxiliary molds 5 with a clip or the like, the elastic mold 4 can be pressed against the reinforcing bar 3 side.

Further, in the second embodiment, the two substantially arc-shaped elastic form frames 4 having a center angle of about 180° are used, but as shown in FIG. 10A, a substantially circular shape having a center angle exceeding 180° is used. It is also possible to combine the arc-shaped elastic mold 4a and the substantially arc-shaped elastic mold 4a′ having a central angle of less than 180° to form the reinforcing bar insertion hole 41 by the inner circumference of both elastic molds 4a and 4a′. It is possible. In some cases, it is also possible to combine three or more elastic forms so that the reinforcing bar insertion holes 41 are formed as a whole.

The shape of the elastic form is not particularly limited, and for example, as shown in FIG. 10B, two substantially triangular elastic forms 4b can be combined to form a substantially quadrangular outer periphery. A substantially semicircular cutout 43 is formed on one side of the elastic mold 4b. Two elastic molds 4b are arranged by combining the sides, and the substantially circular rebar insertion is performed by combining the cutouts 43 with each other. A hole 41 is formed.

In this case, as shown in FIG. 10(c), the shape of the cutout portion 55' of the auxiliary mold 5'is made substantially triangular to match the elastic mold 4b, and the upper and lower auxiliary molds 5'are combined. At this time, a substantially quadrangular hole 56' for arranging the elastic mold 4b is formed. In this case, there is an advantage that it is easier to manufacture the auxiliary mold 5'as compared with the case where the cutout is formed into a substantially semicircular shape as described above. As described above, the shapes of the elastic mold and the auxiliary mold can be variously determined in consideration of workability, cost, and the like.

Besides, the formwork structure 10b of FIG. 11(a) holds a plurality of rebars 3 arranged in the vertical direction, but it is also possible to arrange the auxiliary formwork 5 and the formwork 9 on the left and right as shown in the figure. It is possible.

In this example, as shown in FIG. 11( b ), the reinforcing bars 3 are arranged between the notches 55 of the left and right auxiliary molds 5 so as to be vertically sandwiched by the elastic molds 4, and the left and right auxiliary molds 5 are The bolt 15 is passed through the holes 53 and 59 of the ribs 51 and 57 and the hole 93 of the rib 91 of the left and right molds 9, and the nut 17 is tightened at the tip thereof. By thus tightening the left and right auxiliary molds 5 and 9 together, the elastic mold 4 is pressed toward the reinforcing bar 3. This formwork structure 10b is effective in the case where a vertical partition wall (second structure) is provided laterally of the side wall 1 (see FIG. 1).

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not affected by the above-described embodiments. It is obvious to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims, and those are naturally within the technical scope of the present invention. It is understood that it belongs.

1, 101; Side wall 2, 105; Floor slab 3, 21, 103, 103a; Reinforcing bar 4, 4a, 4a', 4b, 7; Elastic formwork 5, 5'; Auxiliary formwork 9, 109, 121; Formwork 10, 10a, 10b; Formwork structure 15; Bolts 17; Nuts 41, 75; Rebar insertion holes 43, 55, 55', 73, 122; Notches 51, 57, 91; Ribs 53, 56, 56', 59 , 93; hole 71; through hole 107; mechanical joint 117; wire mesh

Claims (10)

When placing concrete in a structure, a formwork structure used at a location where the reinforcing bars project from the structure in a substantially horizontal direction,
A plurality of elastic molds that can be combined to form a reinforcing bar insertion hole for inserting the reinforcing bar,
Pressurizing means for pressurizing the plurality of elastic molds to the reinforcing bar side,
Equipped with,
The mold structure, wherein the pressing means narrows a gap between members arranged so as to sandwich the plurality of elastic molds in a direction orthogonal to the axial direction of the reinforcing bars . The rebar insertion hole is substantially circular,
The formwork structure according to claim 1, wherein a diameter of the reinforcing bar insertion hole is smaller than a diameter of the reinforcing bar. The mold structure according to claim 1 or 2, wherein the elastic mold is made of rubber. The elastic form is a substantially rectangular plate member provided with a substantially semicircular cutout,
The mold structure according to any one of claims 1 to 3, wherein two elastic molds are combined to form the rebar insertion hole by a notch portion of both elastic molds. .. The mold structure according to claim 4, wherein the pressurizing means is a binding material that presses the elastic molds by clamping two molds provided with the elastic mold sandwiched therebetween. .. When placing concrete in a structure, a formwork structure used at a location where the reinforcing bars project from the structure in a substantially horizontal direction,
A plurality of elastic molds that can be combined to form a reinforcing bar insertion hole for inserting the reinforcing bar,
Pressurizing means for pressurizing the plurality of elastic molds to the reinforcing bar side,
A plurality of auxiliary molds that can be combined to form holes for arranging the elastic molds;
A formwork structure comprising: The pressurizing means is a binding material that clamps the two auxiliary molds that can be combined to form the hole and presses the elastic mold arranged in the hole. The formwork structure according to claim 6. When a plurality of the elastic formwork is combined so that the reinforcing bar insertion hole is formed, the outer periphery thereof is substantially circular,
The mold structure according to claim 6 or 7, wherein the hole formed when the plurality of auxiliary molds are combined is substantially circular. When a plurality of the elastic formwork is combined so that the reinforcing bar insertion hole is formed, the outer periphery thereof becomes a substantially square shape,
The mold structure according to claim 6 or 7, wherein the holes formed when a plurality of the auxiliary molds are combined are substantially quadrangular. A step of placing concrete of the first structure using the formwork structure according to any one of claims 1 to 9 at a location where the reinforcing bars project from the first structure in a substantially horizontal direction;
After placing concrete of the first structure, removing the formwork structure;
Forming a second structure in which the reinforcing bars and reinforcing bars arranged to form a lap joint between the reinforcing bars are embedded in concrete;
A method for constructing a structure, comprising:

Images