JP3109030B2 - Joint structure between columns and horizontal members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure between a column of a building frame and a horizontal member which is suitable for use in a building structure.

[0002]

2. Description of the Related Art Conventionally, in a joint structure between a column and a horizontal member of a reinforced concrete building frame structure, in order to transmit the stress generated in the horizontal member to the column, the beam main reinforcing bar has a sufficient anchoring length inside the column ( (Joining part), and concrete is cast.

[0003]

By the way, in joining the column and the horizontal member, the main reinforcement is fixed in the column of the horizontal member and the main reinforcement and the column main reinforcement are apparently directly connected. It was messy. In order to connect the column main bar arranged parallel to this column and the horizontal bar main bar arranged parallel to the horizontal member, bend the column main bar and arrange it parallel to the horizontal member main bar. , In order to join these bent column main bars and horizontal member main bars,
Reinforcement at the joint between the horizontal member and the column became complicated, and this complicated rebar arrangement work had to be performed manually, and the work was complicated. After connecting these pillars and horizontal bars,
There is a problem that a large amount of time and labor is required for covering around the main reinforcement of the cross member with a form and placing concrete in the form.

An object of the present invention is to effectively solve the above-mentioned problems, and it is an object of the present invention to provide a joint structure between a column and a horizontal member capable of improving workability and shortening a construction period.

[0005]

According to the first aspect of the present invention, a building
A column consisting of a pillar of a skeleton and a rigid body attached and fixed to the pillar
A pillar comprising a connecting member and a horizontal member fixed to the connecting member
And the connecting member is connected to the center of the
Diaphragms having through holes through which columns can be inserted
Between the two diaphragms around the through hole.
Having a plate for connecting a pillar, and inserting a pillar through the through hole.
By tightening, the connecting member is attached to a pillar and its peripheral edge is
And protrude to the periphery, and
Make sure there is a gap between the mortar and concrete
Filling with a curable filler such as
While fixing the binding member to the column,
The hardening type filling with shear cotters provided on both sides of the column
Transfer shear force between the plate and the column through the agent
Between the peripheral edges of both diaphragms.
While holding the end of the frame,
Attach stud bolts provided on the periphery to the ends of the horizontal members.
By fixing it, the horizontal member is fixed to the connecting member.
It is characterized by doing.

[0006]

[0007]

According to the joint structure of the column and the lateral member according to the first aspect, the connecting member made of a rigid body is fixedly attached to the column of the building frame, and the lateral member is fixed to the connecting member. This eliminates the need for connecting the cross members directly to the columns.
For this reason, it is possible to eliminate the necessity of connecting the column main bar and the horizontal member main bar. Fixing the connecting member to the column
Insert the pillar into the through hole in the center of the diaphragm,
Mortar or concrete in the gap between the rate and the column surface
It is performed by filling and hardening, etc.
Shear forces between them due to the shear cotters formed on both sides
Can be transmitted reliably. Also, the connection member
The horizontal members are fixed between the peripheral edges of both diaphragms.
To clamp the end of the horizontal member and the diaphragm
By fixing the stud bolts provided on the
It can be done firmly.

[0008]

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a joint structure between a column and a horizontal member according to the present invention will be described below with reference to FIGS. A plurality of columns 1 of the building skeleton are constructed, and a connecting member 30 made of a rigid body such as a steel material is attached to an outer peripheral surface of the columns 1. A plurality of horizontal members 2 (four in FIG. 1) are attached to the connecting member 30. A hardening filler 5 made of, for example, mortar or concrete is filled between the pillar 1 and the connecting member 30 attached to the pillar 1. The column 1 is composed of main reinforcing bars arranged in parallel with the steel column and concrete covering them. Note that the column 1 may be made of precast reinforced concrete.

[0010] As shown in FIG.
Two diaphragms 11 for holding the upper and lower ends of the horizontal member 2, a plate 12 for connecting the two diaphragms 11, and two diaphragms for holding the left and right ends of the horizontal member 2. Plate 2 connecting 11
3 These diaphragm 11 and each plate 1
The reference numerals 2 and 23 are made of, for example, a rigid body such as a steel material, and are connected by welding or the like. These diaphragms 11
For example, a plane is formed of an octagon, and a through hole 11 a slightly larger than the cross section of the column 1 is formed in the center of the diaphragm 11. As shown in FIG. 3, a plurality of stud bolts 13 are attached to the surfaces of the opposed diaphragms 11. On the other hand, plate 12
Are placed in parallel on the left, right, front and rear surfaces of the column 1, respectively, and are attached to the upper and lower diaphragms 11. The width of the plate 12 is formed to be larger than the width of the column 1, and the length of the plate 12 is formed to be substantially equal to the length of the horizontal member 2. On the opposing surfaces of the plate 12 and the column 1, for example, a plurality of projecting sheacotters 6, 7 are formed.

On the other hand, the horizontal member 2 comprises a beam 22 and a slab 21. The beam 22 includes a beam main bar 8 arranged in parallel with the beam 22 and having a width larger than the column width, a plurality of reinforcing bars 9 covering these and the beam main bar 8, And concrete 10 covering the streaks 9. This horizontal material 2
At the end, the upper and lower surfaces are sandwiched by two diaphragms 11 of the connecting member 30, and the stud bolts 13 are embedded in the concrete 10 of the horizontal member 2,
The left and right sides are sandwiched by the plate 23 of the connecting member 30. The slab 2 is placed on the upper part of the diaphragm 11 above this.
1 is supported. In this slab 21, the beam main reinforcement 16
Are layered densely in layers in the horizontal and vertical directions, and these multilayer beam main reinforcements 16 are covered with concrete 20.

Next, the procedure for constructing the joint structure between the column and the horizontal member will be described. First, a plurality of columns 1 of the building frame are constructed.
These pillars 1 are installed on the ground so as to pass through the through holes 11 a of the connecting member 30. Here, the beam 22 and the slab 21 between the plurality of connecting members 30 are constructed. After that, the connection members 30 and the horizontal members 2 connected to them are listed up to the position of the floor of each floor of the pillar 1. At this time, a gap is formed between the connecting member 30 and the column 1. This gap is covered with a mold. The concrete 1 of the beam 21 is cast in these molds, and the hardening filler 5 such as concrete is cast in the gap, so that the column 1 and the horizontal member 2 can be joined. Here, the mortar or concrete as the hardening filler 5 to be filled is desirably a high-strength, non-shrinkable material.

The operation of the joint structure between the column and the horizontal member will be described with reference to FIGS. Since the stress acting on the joint between the column and the transverse member is more critical due to the load acting during an earthquake than the load acting constantly, the effect on the stress during an earthquake will be described. As shown in FIG. 4, the force acting on the building frame during the earthquake transmits a moment M between the horizontal member 2 and the column 1 at each joint of each layer. At these joints, as shown in FIG. 5, a bending moment M having a horizontal axis as a central axis acts between the column 1 and the horizontal member 2. This bending moment M acts as a couple between compression and tension as a sectional force. The pulling force of this couple cannot be directly transmitted unless the reinforcing bar is fixed in the column 1, but the force is transmitted to the connecting member 30 to which the horizontal member 2 is attached, and this connecting member 30 Is transmitted to the cross section on the opposite side of the column 1, and transmitted from the cross section on the opposite side of the column 1 to another cross member 2 as a compressive force (bearing force) at the boundary surface.
However, when a twisting force acts on the connecting member 30 from the horizontal member 2, there is a concern that slippage may occur if there is no adhesion between the connecting member 30 and the horizontal member 2. On the other hand, as shown in FIG. 3, by fixing the stud bolt 13 to the diaphragm 11, the pulling force of the couple can be directly transmitted from the horizontal member 2 to the diaphragm 11 of the connecting member 30, and slip can be prevented. it can.

That is, the joint portion between the column 1 and the horizontal member 2 is reinforced by a rigid connecting member 30. As a couple of diagonal compressive forces caused by the rotation of the connecting member 30,
The bending moment M is transmitted from the horizontal member 2 to the column 1. Further, the shearing force generated at the same time is caused by the column 1 and the connecting member.
Shear cotter 6 formed on the side of plate 30
Is transmitted via the hardenable filler 5 at 7.

In such a joint structure between a column and a horizontal member, the connection between the column 1 of the building frame and the horizontal member 2 connected to the column 1 is made via a rigid connecting member 30. As a result, the stress of the horizontal member 2 can be reliably transmitted to the column 1, and the necessity of connecting the horizontal member 2 directly to the column 1 can be eliminated. That is, it is possible to eliminate the necessity of connecting the column main bar and the beam main bar, to facilitate the connection work between the column 1 and the horizontal member 2, and to omit complicated bar arrangement work and bolt joining. Can be shortened. Furthermore, since the connected horizontal member 2 is fixed via the rigid connecting member 30, the need to tightly join the column 1 and the horizontal member 2 is eliminated, and the column 1 and the connecting member 30 are connected to each other. Can be joined by the curable filler 5. For this reason, the connection workability between the column 1 and the horizontal member 2 can be improved, and complicated bar arrangement work can be eliminated, and the construction period can be shortened because the work is not affected by the weather. Further, since the protruding shear cotters 6 and 7 are formed together with the hardening type filler 5, it is possible to obtain a resistance between the column 1 and the connecting member 30 in the shearing direction.

[0016]

As is apparent from the above description, according to the joint structure of the column and the horizontal member of the present invention, the following effects can be obtained. According to the joint structure of the column and the horizontal member according to claim 1, since the column of the building frame and the horizontal member connected to the column are connected via the connecting member made of a rigid body,
The stress of the horizontal members can be transmitted to the columns without fail, ensuring the safety of the building frame and eliminating the need to directly join the columns and the horizontal members, making complicated rebar work. Can be omitted, and the construction period can be shortened.
Furthermore, since the connected horizontal member is fixed via the rigid connecting member, the necessity of tightly joining the column and the horizontal member can be eliminated. For this reason, the connection workability between the pillar and the horizontal member can be improved, and complicated bar arrangement work can be eliminated, and the construction period can be shortened because the work is not affected by the weather. In particular, fixation of connecting members to columns
Insert the pillar into the through hole provided in the center of the diaphragm
Mortar or concrete in the gap between the plate and the column
Filling and hardening cleats etc. ensures
Yes, and shea cotta on both the plate and the column surface
Forming, ensuring that shear forces are transmitted between them
Can be In addition, fixation of the horizontal member to the connecting member
Between the peripheral edges of both diaphragms
While holding the end,
By fixing the bolt to the horizontal member, it can be performed firmly and firmly.
You.

[0017]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of a joint structure between a column and a horizontal member according to the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a sectional view of the connecting member of FIG. 1;

FIG. 4 is a sectional view showing a bending moment to a frame during an earthquake.

FIG. 5 is a cross-sectional view illustrating a bending moment centered on the horizontal direction in FIG.

FIG. 6 is a cross-sectional view in which a main bar is attached to the connecting member of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pillar 2 Horizontal material 5 Hardening filler 6, 7 Shea cotter 11 Diaphragm 11a Through hole 12 Plate 13 Stud bolt 30 Connecting member

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Kurita 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (56) References JP-A-3-125735 (JP, A) JP-A Heisei 1-130909 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/16 E04B 1/21

Claims (1)

(57) [Claims] In a joint structure of a column and a horizontal member composed of a column of a building frame, a rigid connecting member attached to and fixed to the column, and a horizontal member fixed to the connecting member,
The connecting member has a through hole through which a pillar can be inserted at the center.
Two diaphragms and both around the through hole
Having a plate connecting the diaphragms,
Attach the connecting member to the pillar by inserting the pillar through the through hole
To make the periphery protrude around the pillar, and
A gap is secured between the rate and the column peripheral surface, and the mortar
Filling with hardening filler such as steel or concrete and hardening
By fixing the connecting member to the pillar
To the shea cotter provided on both the plate and the column peripheral surface.
More between the plate and the column via the curable filler
To transmit the shearing force, and the circumference of both diaphragms.
While holding the end of the cross member between the edges,
Place the stud bolts provided on the periphery of the diaphragm
By fixing the cross member to the end of the cross member, the cross member is connected to the link.
A joint structure between a column and a transverse member, which is fixed to a binding member .