JPH0637444U - Reinforcement structure of attached concrete - Google Patents

Abstract

(57) [Abstract] [Purpose] To form a concrete core material by making the embedded bolts provided on the main foundation not to project to the outside of the foundation, and by connecting the joint and mesh reinforcement connected to this embedded bolt. Thus, it is possible to integrate the main foundation and the attached concrete body. [Structure] Recess 12 opened on the outer surface 11a of the main foundation 11
In addition, the embedding bolt 2 in which the threaded portion 6 faces the bottom 12a of the recess 12 in the horizontal direction, the connecting bar 3 that can be connected to the embedding bolt 2, and the connecting concrete that is connected to the connecting bar 3 It is characterized in that it is composed of the mesh muscle 4 adapted to form the core member 22 of the body 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a reinforcing bar structure of an attached concrete body used in foundation work and the like.

[0002]

[Prior art]

 In the construction work of houses, etc., conventionally, after constructing the main foundation 11 of the building as shown in FIG. 3, a temporary frame P made of wood or the like is provided outside the entrance (not shown) and concrete is injected into the interior thereof. By doing so, the attached concrete body 21 including soil concrete, terrace, and erosion is connected (FIG. 3 shows erosion).

[0003]

[Problems to be solved by the device]

 However, since the above-mentioned conventional attached concrete body 21 is a structure formed separately from the main foundation 11 of the building, it causes uneven settlement due to the weight of the attached concrete body 21 or earthwork of the overpass pipe. In addition, there was a problem that the attached concrete body 21 was separated from the main foundation 11 of the building with a gap C as shown in FIG. 6.

Therefore, in order to integrate the main foundation 11 and the attached concrete body 21, a means of taking out a reinforcing bar from the main foundation 11 in advance and using this reinforcing bar as a core member of the attached concrete body 21 is considered. To be

However, when the steel formwork is applied to the foundation work and the attached concrete body 21 is placed while the reinforcing bar is taken out from the main foundation 11, the reinforcing bar insertion hole is made in the steel formwork each time. In addition to being unable to be used as an ordinary formwork for drilling, there is a problem in that the workability of the attached concrete body 21 is reduced because the exposed reinforcing bars impair safety even after the construction of the main foundation 11 is completed. there were.

In view of such conventional circumstances, the present invention secures safety as a structure in which the embedded bolt provided on the main foundation does not project to the outside of the foundation, and at the same time, connects the embedded bolt to the joint bolt. It is an object of the present invention to provide a reinforcing bar structure for an attached concrete body, which enables the main foundation and the attached concrete body to be integrated by forming a concrete core member by connecting with mesh reinforcement.

[0007]

[Means for Solving the Problems]

 The reinforcement structure of the attached concrete body of this invention can be connected to the embedded bolt with the threaded part horizontally facing from the bottom of this recess inside the recess opened on the outer surface of the main foundation, and this embedded bolt And a mesh bar adapted to form a core member of the attached concrete body by being connected to the joint bar.

[0008]

[Action]

 Since the embedded bolt is embedded in the main foundation so as not to project from the outer surface of the main foundation, safe work can be performed around the main foundation.

In the attached concrete body, a core member is formed by connecting a mesh bar to a joint bar connected to an embedded bolt, and the core member can be easily integrated with the main foundation.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Since the main foundation and the attached concrete body have already been described with reference to Fig. 3, the same reference numerals are used.

A reinforcing bar structure 1 of an attached concrete body 21 shown in FIG. 1 is mainly composed of embedded bolts 2, joint bars 3 and mesh bars 4.

As shown in FIG. 5, the embedded bolt 2 includes an L-shaped main body 5 including a vertical portion 5a and a horizontal portion 5b, and a screw portion 6 formed at an extending end portion of the horizontal portion 5b. . 5c is a color part.

A pair of the embedding bolts 2 are arranged along the length direction of the main foundation 11 with a space between each other, and are embedded in the main foundation 11 so that the vertical portions 5 a are parallel to each other in the vertical direction. On the other hand, the screw portion 6 is horizontally exposed from the bottom portion 12a of the recess 12 inside the recess 12 that opens in a rectangular shape on the outer surface 11a of the main foundation 11.

The embedding bolt 2 is embedded in the main foundation 11 by using the embedding jig 31 shown in FIG. 4, and the embedding jig 31 is mounted on the back plate 33 of the box-shaped main body 32 whose front surface is open. Two bolt insertion holes 34 are provided, and a short tube body 35 for bolt insertion which is erected forward is formed at the peripheral edge of each of the bolt insertion holes 34, while the upper plate 36 of the box-shaped main body 32 is provided. An inverted L-shaped hooking piece 39 composed of a leg portion 37 and a horizontal portion 38 is erected on the front end edge portion with the tip of the horizontal portion 38 facing forward.

Assembling the pair of embedding bolts 2 into the embedding jig 31 by inserting the threaded portions 6 of the embedding bolts 2 into the bolt insertion holes 34 of the embedding jig 31 and tightening the nuts 40. It is designed to be done.

In the embedding jig 31 with the embedding bolt 2 assembled in this way, the open end of the box-shaped main body 32 is in close contact with the inner surface of the main foundation panel 13 in the main foundation panel 13 that has been assembled. As described above, the hooking piece 39 is hooked on the upper end of the main foundation panel 13 for positioning, and concrete is poured into the main foundation panel 13.

After the concrete is dried, the main foundation panel 13 and the embedding jig 31 separated from the embedding bolt 2 are removed from the main foundation 11 to form the above-described recess 12 in the main foundation 11. The threaded portion 6 of the embedding bolt 2 embedded in the main foundation 11 horizontally faces the inside of the recess 12 from the bottom 12a of the recess 12.

The splice 3 is composed of a coupler 7 that can be screwed into the threaded portion 6 of the embedding bolt 2 and a rebar body 8 having a diameter smaller than the female thread of the coupler 7. For the coupler 7, for example, a long nut is applied. One end of the reinforcing bar body 8 is welded to one side of the coupler 7.

The mesh reinforcement 4 is composed of reinforcing bars 9 and transverse reinforcements 10 assembled in a grid pattern, and is configured so as to form the core member 22 of the attached concrete body 21 by being connected to the respective joint reinforcements 3 described above. There is.

As the mesh streak 4, a mesh wire may be applied instead of this embodiment.

Next, the operation of the above embodiment will be described.

In the embedding bolt 2, the main body 5 is embedded in the main foundation 11 by using the embedding jig 31, and the threaded portion 6 is formed in the recess 12 opened in the outer surface 11 a of the main foundation 11. The bottom 12a of the recess 12 faces the horizontal direction. Therefore, since the screw portion 6 does not project from the outer surface of the main foundation 11, the work around the main foundation 11 is not hindered.

Since the core member 22 of the attached concrete body 21 is formed by connecting the mesh reinforcement 4 to the splice 3 connected to the embedded bolt 2, the attached concrete body 21 is constructed integrally with the main foundation 11. .

Although the attached concrete body 21 has been described as being loosened in this embodiment, the reinforcing bar structure 1 described above can also be applied to the case of placing a terrace or an earth concrete.

[0025]

[Effect of device]

 The reinforcement structure of the attached concrete body of the present invention includes an embedded bolt that is embedded in the main foundation so that the screw part does not protrude from the outer surface of the main foundation, and a joint bar that can be connected to the embedded bolt. Since it is composed of mesh reinforcements that are designed to be connected to these joint reinforcements to form the core member of the attached concrete body, there is no protrusion that hinders the work around the main foundation, thus ensuring safety and workability. Is greatly improved.

In addition, since the core material of the attached concrete body is integrated with the main foundation through the joint bars and the embedded bolts, the attached concrete body may be unevenly sinked or the joint portion with the main foundation may be peeled off. It has the great advantage of eliminating all problems.

[Brief description of drawings]

FIG. 1 is a perspective view showing a reinforcing bar structure of an attached concrete body.

FIG. 2 is a perspective view of an embedded bolt and a joint bar.

FIG. 3 is a perspective view of a main foundation and an attached concrete body.

FIG. 4 is a vertical cross-sectional view illustrating a method of burying a burial bolt.

FIG. 5 is a vertical cross-sectional view of the main foundation after the embedding of the embedding bolt is completed.

FIG. 6 is a perspective view showing a conventional example of an attached concrete body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcement structure 2 Embedded bolt 3 Joint reinforcement 4 Mesh reinforcement 11 Main foundation 11a Outer side surface 12 Recess 12a Bottom 21 Attached concrete body 22 Core member

Claims (1)

[Scope of utility model registration request] 1. Inside the recess opened on the outer surface of the main foundation,
An embedded bolt with the threaded portion facing the bottom of the recess in the horizontal direction, a splice that can be connected to the embedded bolt, and a joint member that is connected to the splice to form the core member of the attached concrete body. Reinforcement structure of an attached concrete body, which is composed of made mesh reinforcement.