JPH07127130A - Joint structure of column and beam - Google Patents

Abstract

PURPOSE:To arrange hoops at respective specified positions and facilitate a construction work. CONSTITUTION:In a structure where a necessary number of beams 2 are connected to a column 1 and forms 3 are arranged around the column 1 to place concrete in the inside, gusset plates 4 are attached at the side of column in the longitudinal direction. Hoops 6 are inserted into bored holes 5 formed on the gusset plates 4 and gusset plates 7 at the end of beams 2 are provided to overlap and connect to the gusset plates 4. And a cut groove 8 is made at the position corresponding to the bored holes 5 of the gusset plates 7 of the beam in order to position the hoops 6 in the cut groove 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a column and a beam, and more particularly to a structure in which a hoop is arranged around the column.

[0002]

2. Description of the Related Art There are various methods for connecting a beam to a pillar, and there is a method shown in FIG. 4 for forming a mold around the pillar and placing concrete inside.

This is for connecting a total of four beams 2 to a column (steel core column) 1. Forming a frame 3 around the column 1 and placing concrete inside to integrate it with the beam as a concrete column. It is a thing.

On the side surface of the pillar 1, there is provided a caset plate (gazette) 4 along the longitudinal direction thereof.
A large number of bolt holes 4a are formed in the caset plate 4.

On the other hand, at the end portion of the beam 2, a beam side casette plate 7 to be superposed on and connected to the casette plate 4 is provided.
And a bolt hole 7a corresponding to the bolt hole 4a.
Has been drilled.

At the time of construction, the casette plate 4 is used.
The beam side casette plate 7 is superposed and bolted, and then the form 3 is provided and concrete is placed inside to form concrete columns.

By the way, in the above-mentioned construction method, it is necessary to arrange a large number of hoop reinforcements (shear reinforcement reinforcements) 6 between the columns 1 and the formwork 3. The hoop muscles 6 are formed by arranging square frames in multiple stages on the inner periphery of the form 3, and the hoop muscles 6 are held by reinforcing bars 6a extending in the longitudinal direction of the column 1.

[0008]

However, in the above-mentioned conventional device, it is difficult to dispose the hoop streak 6 at the connecting portion between the column 1 and the beam 2. That is, since the caset plate 4 and the beam side caset plate 7 divide the inside of the form into four, there is no influence on the reinforcing bars 6a along the longitudinal direction of the column 1, but the hoops orthogonal to this. The streaks 6 hit the casette plate 4 and the beam side casette plate 7 and cannot be installed. Therefore, there is a possibility that the strength of the concrete column may be reduced at the connecting portion between the column 1 and the beam 2.

Further, in order to prevent the strength from being lowered, it is necessary to perform a difficult work such as adding a reinforcing bar from a scaffold on the floor side. The present invention has been made in view of the above-mentioned matters, and an object thereof is to provide a connection structure between a column and a beam, in which hoop muscles can be arranged at regular positions and which can be easily constructed.

[0010]

In order to solve the above technical problems, the present invention is to connect a required number of beams 2 to a pillar 1 and to provide a form 3 around the pillar 1 to make concrete inside. The following structure was adopted in the structure for casting.

That is, a casette plate 4 is provided on the side surface of the column along the longitudinal direction thereof, and the casette plate 4 is provided.
A beam side caset for forming a perforated portion 5 on the perforated portion 5 and penetrating an annular hoop streak 6 surrounding a column in the perforated portion 5 while superposing and joining the end portion of the beam 2 to the caset plate 4. The plate 7 is provided, and the beam-side casette plate 7 is provided with the cut groove 8 so that the hoop muscle 6 is located in the cut groove 8 and the casette plate 4 and the beam-side casette plate 7 are joined.

[0012]

The hoop muscle 6 penetrates the perforated portion 5 formed in the caset plate 4. The hoop muscle 6 is arranged at a right angle to the longitudinal direction of the column 1 and has the shape of the column. It can be a matched shape, for example a ring, such as a square.

In this state, the hoop muscles 6 are positioned at right angles to the caset plate 4, and when the beam 2 is attached to the pillar 1, the notch groove 8 formed in the beam side casette plate 7 provided on the beam 2 is formed in the above-mentioned manner. Insert according to hoop muscle 6. As a result, the beam-side casing plate 7 is superposed on the casing plate 4. Here, the two are fixed by bolting or the like.

As described above, since the hoop muscles 6 can be arranged also in the portion to which the beam 2 is connected, there is no fear that the strength of the beam connecting portion will decrease.

[0015]

Embodiments of the present invention will be described with reference to FIGS. The pillar 1 is a steel core pillar and has a circular cross section. And the casette plate 4 is 9 at the position that becomes the floor.
Four pieces are attached in the longitudinal direction with an angle difference of 0 degree. The caset plate 4 is formed in a substantially square shape and has eight bolt holes 4a formed therein. A perforated portion 5 is formed near the tip edge of the caset plate 4,
The hoop muscle 6 penetrates the perforated portion 5. The hoop reinforcing bar 6 acts as a shear reinforcing bar of concrete, and becomes a reinforcing bar of a concrete column described later. Further, these hoop reinforcements 6 are welded to and retained by a plurality of reinforcing bars 6a provided upright in the longitudinal direction of the column 1.

As shown in FIG. 3, the hoop muscles 6 are formed in a square ring shape, and the same shape is also attached to the casette plate 4 in the vertical direction afterwards. Reinforcing ribs 20 are provided above and below the caset plate 4.
20 are provided respectively. The reinforcing ribs 20 and 20 are omitted in FIG.

The beam 2 is connected to the caset plate 4. The beam 2 is made of precast concrete having a reinforcing bar 2a inside, and a beam side casette plate 7 is attached to one end of the beam 2. The beam-side casette plate 7 has a rectangular shape, and about half thereof is insert-molded in concrete. The exposed portion has a substantially square shape.

This beam side casette plate 7 is attached in a state of being overlapped with the casette plate 4, and a bolt hole 7a is formed at the same position as the bolt hole 4a. Then, a cut groove 8 is provided at a position corresponding to the position of the punched portion 5.

The cut groove 8 is provided in the longitudinal direction of the beam 2, that is, in the horizontal direction, and is open at the tip edge. At the time of construction, the notch groove 8 formed in the beam side casette plate 7 provided in the beam 2 is inserted in alignment with the hoop muscle 6. As a result, the casette plate 4
The beam-side casette plate 7 is superposed on. Here, after accurately aligning, tighten a bolt (not shown) to fix both. The molds 3 are separately arranged above and below the beam 2, and four molds having an L-shaped cross section are provided to close the corner space between the adjacent beams 2 and 2. Therefore, the connection end of the beam 2 is exposed on the side of the pillar 1 and constitutes a part of the mold.

After the formwork 3 is completed, concrete is placed inside the formwork 3 to form concrete columns. At this time, the floor surface 21 is simultaneously formed. Since the hoop muscles 6 can be arranged also in the portion to which the beam 2 is connected in this way, there is no fear that the strength of the beam connecting portion will be reduced after concrete placement. In addition, there is no need for difficult bar arrangement work,
Since the beam 2 can be temporarily fixed by engaging the notch groove 8 with the hoop muscle 6, quick and safe construction can be performed.

[0021]

According to the present invention, since the hoop streak can be arranged at the regular position of the joint portion between the column and the beam, there is a risk that the strength of the concrete column at this joint portion will be reduced. Absent.

Further, by aligning the cut groove with the hoop line, the beam side casette plate is positioned and the construction is facilitated.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is a side view of a beam portion showing an embodiment of the present invention.

FIG. 3 is a perspective view of a pillar portion showing an embodiment of the present invention.

FIG. 4 is a side view showing a conventional column-beam connection structure.

[Explanation of symbols]

 1 ・ ・ Columns, 2 ・ ・ Beams, 3 ・ ・ Forms, 4 ・ ・ Casette plates, 5 ・ ・ Perforations, 6 ・ ・ Hoop streaks, 7 ・ ・ Beam side casette plates, 8 ・ ・ Incision grooves.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Mizuguchi 2-10-10 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd. Construction Industry Co., Ltd. (72) Inventor Hiroshi Motoda 2-10-10 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd. (72) Inventor Yoichi Takaya 2-10-26 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industrial Co., Ltd. (72) Inventor Tatsushi Yamazaki 2-10-10 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Industry Co., Ltd. (72) In-house Shinji Kato 2-1026 Fujimi, Chiyoda-ku, Tokyo Maeda Construction Co. In the company

Claims (1)

[Claims] 1. The required number of beams are connected to the columns, and
In a structure in which a formwork is provided around the pillar and concrete is placed inside, a pillar plate is provided on the side surface of the pillar along the longitudinal direction thereof, and a perforated portion is formed in the cazert plate. While providing through the annular hoop muscle that surrounds the column, while providing a beam side casette plate to be superposed and joined to the casette plate at the end of the beam, a notch groove is provided in the beam side casette plate. A connection structure between a column and a beam, wherein the hoop streak is located in the cut groove, and the caset plate and the beam side caset plate are joined to each other.