JP3188640B2 - Joining structure of structural 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 structure of a joint of structural members constituting a frame of a building such as a multi-story building.

[0002]

2. Description of the Related Art The frame of a structure such as a multi-story building is constructed by joining structural members such as column members and beam members to each other. In such a structure, when an external force is applied due to an earthquake, a strong wind, or the like, a stress is transmitted to the entire skeleton through the joints of the structural members to resist the external force. Further, when an extremely large external force is applied to the skeleton such as during a large earthquake, the entire skeleton of the structure is plastically deformed to absorb the energy of the external force.

By the way, in such a structure,
The joints of structural members are parts where stress tends to concentrate from a structural point of view.If the strength is not sufficiently secured in this part, an extremely large external force is applied to the structural body such as during a large earthquake. In such a case, the plastic deformation concentrates and causes great damage, and in severe cases, breakage may occur and restoration by repair work or reinforcement work may not be possible.

Therefore, conventionally, for example, Japanese Utility Model Laid-Open No. 4-111
As disclosed in Japanese Patent Publication No. 870 (Int. Cl. E04H 9/02) and the like, dampers such as hysteresis dampers and viscous dampers are interposed between the structural members by incorporating them into braces, or provided with seismic resistance. Deformation at the joints of the structural members has been suppressed, for example, by providing walls to increase rigidity.

[0005]

However, as described above, in a conventional structure that suppresses deformation of a joint of a structural member by a damper or an earthquake-resistant wall, a large space is required for installation of the damper or the earthquake-resistant wall. Therefore, for example, the arrangement of openings such as entrance doors and windows is greatly restricted, and the degree of freedom in design is greatly restricted.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of joining structural members that can suppress deformation at the joints of structural members without providing a damper, an earthquake-resistant wall, or the like. It is to provide a structure.

[0007]

Means for Solving the Problems In order to achieve the above object, in the joint structure of structural members according to the present invention ,
Formed between the column and beam members of the joined structure
At the corner, a supplementary member joined to both the column member and the beam member
A reinforcing member disposed between the reinforcing member and the corner portion;
Along the corners through an energy absorbing material that absorbs external deformation
It is characterized by having been established .

[0008] In such a joint structure of structural members , an external force is applied to the skeleton of the structure, and the column-to-beam joint of the structure is formed.
When deformation is going to occur, place it between the beam-column joint and this corner.
Energy absorber interposed between the installed reinforcing member
Is deformed, so the strain energy input to the beam-column joint is
Energy at the beam-column joint,
Can be suppressed to prevent the damage. Especially pillars
Energy in the space surrounded by the members and beams
Absorbent material allows external deformation force to escape
Energy absorption material without
It can function effectively. Structures such as during a major earthquake
When an extremely large external force is applied to the
Energy absorber only deforms and damages the beam-column joint
Can be reduced as much as possible. In its recovery
Replaces energy absorbers damaged by deformation
Just restore it to its original state. Ma
In addition, the energy absorbing material is provided at the corner between the column member and the beam member.
Because it is arranged in the opening, for example, the opening of the door or window
Almost out of the way when installing
The degree can be secured sufficiently.

[0009]

Further, if the reinforcing member is formed with a lower strength than the beam member and the column member, when a large external force is applied to the frame of the structure such as during a large earthquake, the reinforcing member is replaced with the column member or the column member. By yielding before the beam member, energy can be absorbed even by plastic deformation of the reinforcing member, and deformation at the joint of the structural member can be further suppressed.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a joint structure of a structural member according to the present invention. The joint structure of a structural member according to the present invention is basically a structure in which an energy absorbing material that absorbs an external deformation force is interposed at a joint portion of a structural member constituting a frame of a structure such as a multi-story building. . Here, the energy absorbing material that absorbs the deformation external force is a material that absorbs its energy by being deformed by the deformation external force, and is formed using a material such as a viscoelastic body or lead. This energy absorbing material is provided at the joint of the structural member,
The deformation external force input to this joint is absorbed.

FIGS. 1 and 2 show a first embodiment of a joint structure of a structural member according to the present invention, in which a column member 2 and a beam member 4 are mutually joined. 6 is shown. Here, both the column member 2 and the beam member 4 are I
It is a steel frame member made of shaped steel, and constitutes the framework of the skeleton of the structure. The column member 2 and the beam member 4 intersect perpendicularly with each other and are integrally and rigidly joined.

4 formed between the column member 2 and the beam member 4
The two corner portions 8 each have a right-angled triangular reinforcing member 1.
0 is provided through the viscoelastic body 12 as the energy absorbing material. Each reinforcing member 10 is arranged so that a right angle portion thereof corresponds to the corner portion 8, and sides on both sides of the right angle portion face the column member and the beam member, respectively. Further, the viscoelastic body 12 is interposed between the reinforcing member 10 and the corner portion 8 along the sides on both sides of the right angle portion of the reinforcing member 10.

On the other hand, the reinforcing member 10 comprises a right triangular panel portion 10a and a reinforcing web portion 10b integrally formed along the periphery of the panel portion 10a. The panel portion 10a is made of a steel plate material, and is disposed in the same plane as the column member 2 and the beam member 4. On the other hand, the reinforcing web part 1
0b is formed of a steel material in a frame shape over the entire periphery along the peripheral portion of the panel portion 10a, and extends vertically from the peripheral portion of the panel portion 10a to both sides of the panel portion 10a to form a flange. I have.

A reinforcing web portion 10b facing the column member 2 and the beam member 4 and flange portions 2b and 4b formed at both ends of the web portions 2a and 4a of the column member 2 and the beam member 4 are provided.
A bolt member 14 is interposed between the two. The bolt member 14 is disposed so as to penetrate the inside of the viscoelastic body 12, and the reinforcing web portion 1 of the reinforcing member 10 is provided.
0b, flange portions 2b, 4b of the column member 2 and the beam member 4
And mutually concluded. Thereby, the reinforcing member 10
Is joined to both the column member 2 and the beam member 4 via the viscoelastic body 12. The viscoelastic body 12 is interposed between the reinforcing member 10 and the column member 2 and the beam member 4 in a state of being sandwiched therebetween. Here, the fastening state of the bolt member 14 is set so that the viscoelastic body 12 can be appropriately deformed.

As described above, in the column / beam connection portion 6 of the frame of the structure, the corner portion 8 formed between the column member 2 and the beam member 4 and the corner portion 8 of the column member 2 and the beam member 4 are formed. Since the viscoelastic body 12 is interposed between the reinforcing member 10 joined to both members, an external force is applied to the skeleton of the structure due to an earthquake, wind, or the like, and the column member 2 and the beam member 4 are joined. When the portion is to be deformed, the joint between the column member 2 and the beam member 4 and the reinforcing member 10 is also deformed. At this time, the viscoelastic body 12 is deformed and absorbs its energy. As a result, the strain energy input to the joint between the column member 2 and the beam member 4 is absorbed by the viscoelastic body 12, the deformation at the joint can be suppressed, and the damage can be prevented.

Even if the column member 2 and the beam member 4 are rigidly joined as described above, the viscoelastic body 12 is disposed together with the reinforcing member 10 in the space surrounded by the column member 2 and the beam member 4. It is possible to sufficiently absorb the deformed external force into the viscoelastic body 12 without peeling it out, suppress deformation at the joint between the column member 2 and the beam member 4, and prevent the damage as much as possible. it can.

Further, since the viscoelastic body 12 and the reinforcing member 10 are disposed at the corner 8 between the column member 2 and the beam member 4, for example, an opening such as a door or a window is provided. In this case, there is almost no hindrance, and the degree of freedom in design can be sufficiently ensured.

When the viscoelastic body 12 is extremely damaged due to an extremely large external force applied to the frame of the structure, such as during a large earthquake, the viscoelastic body 12 can be easily restored to its original state simply by replacing it. Can be.

Further, since the viscoelastic body 12 hardly hinders the installation of an opening such as a door or a window, a sufficient degree of freedom in design can be ensured.

By the way, regarding the reinforcing member 10,
If the panel portion 10a is formed of a material having a lower strength than the column member 2 and the beam member 4 instead of the steel plate material, the reinforcing member 10 is provided before the column member 2 and the beam member 4.
And the strain energy can be absorbed by plastic deformation, so that the deformation at the joint between the column member 2 and the beam member 4 can be further suppressed as much as possible.

[0022]

[0023]

[0024]

[0025]

[0026]

In the above embodiment, the energy
-The case where a viscoelastic material was used as the absorbent was shown.
However, it is an energy absorbing material that absorbs external deformation force.
If so, another one may be used.

[0028]

As described above in the embodiment of the present invention, according to the joint structure of the structural members according to the present invention, an earthquake or wind
External force is applied to the frame of the structure due to
When the section is going to be deformed, the beam-column joint and this corner
Energy absorption interposed between the reinforcing member
Since the material is deformed, the strain input to the beam-column joint is
Energy can be absorbed, and the
The shape can be suppressed and its damage can be prevented. In particular
Energy in the space surrounded by column members and beam members
External deformation force by placing the energy absorbing material
Energy can be absorbed without peeling
The material can function effectively. In case of large earthquake
If an extremely large external force is applied to the structure,
Only the energy absorbing material is deformed and the beam-column joint
Damage can be reduced as much as possible. In the recovery
Replace the energy absorbing material damaged by the deformation
You can easily restore it to its original state.
In addition, the energy absorbing material is provided at the corner between the column member and the beam member.
Since it is located at the corner, for example, openings such as doors and windows
When installing the unit, there is almost no obstruction, and
The reason can be sufficiently secured.

[0029]

Further, if the reinforcing member is formed with a lower strength than the column member or the beam member, the energy is also supplied by the plastic deformation of the reinforcing member before the column member or the beam member. It can be absorbed, and the deformation at the joint of the structural member can be further suppressed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a joining structure of a structural member according to the present invention.

FIG. 2 is a perspective view showing a first embodiment of the joining structure of the structural members according to the present invention.

[Explanation of symbols]

 2 Column Member 4 Beam Member 6 Column / Beam Connection 8 Corner 10 Reinforcement Member 10a Panel 10b Reinforcement Web 12 Viscoelastic Body 14 Bolt Member

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hashimoto sequentially 2-3-2, Uchisaiwai-cho, Chiyoda-ku, Tokyo Inside Kawasaki Steel Corporation (56) References JP-A-7-76953 (JP, A) (58) Survey Field (Int.Cl. ⁷ , DB name) E04H 9/02 E04B 1/18-1/24

Claims (2)

(57) [Claims] 1. A column member and a beam portion of a structure joined to each other.
The column member and the beam member at corners formed between
A reinforcement member to be joined to both is disposed, and this reinforcement member and
Absorbs deformation external force between and along the corners
A joint structure for a structural member, wherein an energy absorbing material is interposed . Wherein said reinforcing member, according to claim, characterized in that it is formed of a low intensity than the beam member and the pillar member
2. The joining structure of the structural member according to 1 .