KR101439744B1 - Coupling structure for beam to column connection - Google Patents

Abstract

The present invention provides a joining structure of a column and a beam.
The joining structure of the column and the beam includes: a column; A beam horizontally mounted on a side of the column, the beam having a web, an upper flange and a lower flange; A joining portion joining the side surface of the column and the upper flange or the lower flange of the beam so as to connect the column and the beam; And a plurality of slit plates joined to the lower flange and the joining portion of the beam such that deformation is concentrated while absorbing lateral energy applied to the beams, the slit plates having slits formed at regular intervals; Wherein the damper portion is bolted to the lower flange and the joint portion of the beam, the damper portion includes a first damper member disposed at the center of the damper portion, and a second damper member disposed at both sides of the first damper member, Wherein the second damper member includes a plurality of bolt slots formed to penetrate the lower flange and the joint portion of the beam so as to be bolted to each other and to be elongated along the longitudinal direction of the beam, The damper member may be provided so as to be movable in the horizontal direction by a predetermined distance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-

The present invention relates to a joining structure of a column and a beam, more particularly, to a joining structure of a column and a beam capable of reusing a column and a beam by exhibiting the performance of a special moment frame while minimizing damage and deformation of the column and the beam will be.

Recently, the demand for high-rise buildings has been increasing, and interest in seismic design has been greatly increased in order to prevent collapse of building due to high-strength earthquake and minimize damage. Therefore, there is an increasing interest and need for a joint structure of columns and beams with stable seismic performance to prepare for earthquakes.

According to the current regulations, it is classified into a moment frame, a medium moment frame, and a special moment frame depending on the performance of the column-beam connection. In this case, the moment frame usually exhibits an interlaminar deformation capacity of 2%. At this point, it is specified that the performance corresponding to 80% of the compressive moment is expressed. The special moment frame exhibits the interlaminar deformation capacity of 4% And the performance equivalent to 80% of the moment of the bolt is expressed at the point of view.

However, in most column-to-beam joints, a plastic hinge is generated in the beam portion and is damaged, so that there is a problem that reuse is impossible.

Also, existing reusable column - beam joints can be assembled and disassembled, but they are insufficient to be used as special moment frames due to their lack of strength and deformability.

The present invention has been proposed in order to solve the above-mentioned problems of the prior art. The object of the present invention is to minimize the damage and deformation of the columns and beams, which are the main structural members, And to provide a joining structure of the column and the beam.

Another object of the present invention is to provide a joining structure of a column and a beam, in which the damage and breakage of the damper part itself in which the load is concentrated is minimized, and the damper part exhibits sufficient strength.

According to an aspect of the present invention,
Pillar;
A beam horizontally mounted on a side of the column, the beam having a web, an upper flange and a lower flange;
A joining portion joining the side surface of the column and the upper flange or the lower flange of the beam so as to connect the column and the beam; And
A damper part having a plurality of slit plates joined to the lower flange and the joining part of the beam so that the deformation is concentrated while absorbing the lateral load energy applied to the beam, the slits being formed at regular intervals;
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The damper portion is bolted to the lower flange and the joint portion of the beam,
Wherein the damper portion includes a first damper member disposed at the center of the damper portion and a second damper member disposed at both sides of the first damper member,
The second damper member includes a plurality of bolt slots which are formed to be bolted to the lower flange and the joining portion of the beam and are elongated along the longitudinal direction of the beam. When the external force is applied, the second damper member is horizontally The present invention provides a joining structure of a column and a beam movably disposed at a predetermined distance.

Preferably, the first damper member may be bolted to the lower flange of the beam and to the joint by a circular bolt hole.

Preferably, the first damper member includes a first slit plate provided vertically and having a plurality of slits, and a first horizontal plate joined horizontally to upper and lower portions of the first slit plate and joined to the lower flange of the beam In addition,
The second damper member may include a second slit plate installed vertically and having a plurality of slits and a second horizontal plate joined horizontally to upper and lower portions of the second slit plate and joined to the lower flange of the beam .

Preferably, the bolt slot may be formed in the second horizontal plate.

Preferably, the damper portion includes a bolt for bolt fastening to the lower flange and the joint portion of the beam, and a nut for fixing the bolt, wherein the bolt passing through the bolt slot of the second damper member includes a plurality of nuts .

Preferably, the first damper member may include a plurality of the first slit plates.

Preferably, the joining portion includes: a first joining member having a first vertical plate joined to a side surface of the column, and a first horizontal plate integrally joined to the first vertical plate and joined to an upper flange of the beam; And a second horizontal plate joined to the side of the column and a second horizontal plate integrally joined to the second vertical plate and joined to the lower flange of the beam through a connection between the damper portion and the second vertical plate, Member.

Preferably, the first joint member and the second joint member are bolted to the side surface of the column and the upper flange or the damper portion of the beam, thereby joining the column and the beam.

According to the joining structure of the column and the beam according to the embodiment of the present invention, deformation and damage due to external force are concentrated on the damper portion provided on the lower flange of the beam at the column and the joining portion, The damage and deformation of the beam can be minimized, so that the damage control becomes easy.

According to the embodiment of the present invention, since the damper portion is bolted to the lower flange and the joint portion of the beam, when the damper portion is deformed or damaged, only the damper portion can be separated and replaced, And provides an effect of reusing.

According to an embodiment of the present invention, when an external force is applied to the damper portion, the slit plate is deformed and the damper portion is slid in a state in which the bolt fastening is maintained in the lower flange and the joint portion of the beam. The rotational behavior of the rotor can be achieved. Therefore, it is possible to maximize the effect of preventing damage and deformation of the column and the beam.

Further, according to the embodiment of the present invention, damage and breakage of the damper portion itself can be minimized through deformation and sliding movement of the damper portion, and the damper portion can exhibit sufficient strength.

1 is a front view of a joining structure of a column and a beam according to an embodiment of the present invention;
FIG. 2A is a partially enlarged cross-sectional view showing a damper part applied to a joining structure of a column and a beam according to an embodiment of the present invention; FIG.
FIG. 2B is an enlarged cross-sectional view showing a state in which the damper portion and the joint portion are bolted together in FIG. 2A. FIG.
3 is a bottom view showing a bottom surface of a damper part applied to an embodiment of the present invention.
4 is a side view of a joining structure of a column and a beam according to an embodiment of the present invention.
5 is a moment-to-stratified displacement nonlinearity diagram of an experimental example for confirming the structural performance of a joint structure of a column and a beam according to an embodiment of the present invention.
6 is a photograph showing an experimental example using a joining structure of a column and a beam according to an embodiment of the present invention.

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

First, the embodiments described below are embodiments suitable for understanding the technical characteristics of the joining structure of the column and the beam of the present invention. However, the technical features of the present invention are not limited by the embodiments to which the present invention is applied or explained in the following embodiments, and various modifications are possible within the technical scope of the present invention.

The joining structure 100 of a column and a beam according to an embodiment of the present invention includes a column 200 and a horizontal structure 200 disposed on a side of the column 200, A beam 300 having a web 310 and an upper flange 331 and a lower flange 333 and a side plate 300 connected to the side of the column 200 to connect the column 200 and the beam 300. [ A joining part 400 joined to the upper flange 331 or the lower flange 333 of the beam 300 and a lower flange 333 and the joining part 400 of the beam 300, And a damper unit 500 having a plurality of slit plates formed at intervals so that deformation is concentrated while absorbing the lateral load energy applied to the beam 300.

The column 200 may be formed of H-shaped steel, for example, as shown in FIG. 1, for example.

The beam (300) And a H-shaped steel plate having an upper flange 331 and a lower flange 333. The load transmitted to the beam 300 is transmitted to the column 200 by being horizontally joined to the column 200, .

The beam 300 is connected to the side of the column 200 and the upper flange 331 or the lower flange 333 of the beam 300 so as to connect the column 200 and the beam 300 Can be bonded.

The joining part 400 may include a first joining member 410 bonded to the upper side of the beam 300 and a second joining member 430 bonded to the lower side of the beam 300. [

At this time, the first joint member 410 and the second joint member 430 are bolted to the side of the column 200 and the upper flange 331 of the beam 300 or the damper unit 500, The column 200 and the beam 300 can be joined to each other. That is, the first joint member 410 and the second joint member 430 avoid the web 310 of the beam 300 to move the upper and lower flanges of the beam 300 and the column 200 Bolt fastening.

Accordingly, it is possible to provide an effect of preventing the occurrence of fracture due to the damage of the web 310 of the beam 300.

The first joining member 410 includes a first vertical plate 411 joined to a side surface of the column 200 and a second vertical plate 411 integrally coupled to the first vertical plate 411, And a first horizontal plate 413 which is bolted to the upper flange 331.

The second joining member 430 includes a second vertical plate 431 joined to a side surface of the column 200 and a second vertical plate 431 integrally coupled to the second vertical plate 431, And a second horizontal plate 433 joined to the lower flange 333 of the beam 300 through a joint.

The second horizontal plate 433 may be connected to the lower flange 333 by being bolted to the damper unit 500 to be connected to the damper unit 500. On both sides of the second horizontal plate 433 And the side plate 450 may be vertically joined to the end and the second vertical plate 431. Accordingly, the beam 300 can be stably supported with respect to the vertical shearing force applied to the joining portion of the column 200 and the beam 300.

1, the damper unit 500 is mounted on the lower flange 333 of the beam 300 and the joint unit 400, and has a plurality of slits formed at regular intervals The deformation can be concentrated while absorbing the lateral load energy applied to the beam 300 by providing the slit plate.

That is, in one embodiment of the present invention, a damper unit 500 for absorbing energy is provided at the lower flange 333 of the beam 300 at the junction between the column and the beam, The damper unit 500 can absorb the energy intensively and deform the damper unit 500.

As a result, deformation and damages due to an external force are concentrated on the damper unit 500, and damage and deformation of the column 200 and the beam 300, which are the main structural members, at the joint between the column 200 and the beam 300 It is possible to obtain an effect of facilitating damage control.

The damper unit 500 is bolted to the lower flange 333 of the beam 300 and the joining unit 400. At least one slit plate of the plurality of slit plates has a length And can be bolted to move in a direction.

Accordingly, when the external force is applied to the damper part 500, the slit plate is deformed and the damper part 500 is bolted to the lower flange 333 and the joint part 400 of the beam 300 The rotation of the joining structure 100 between the column and the beam becomes possible. Therefore, the effect of preventing damage and deformation of the column 200 and the beam 300 can be maximized.

3 and 4, the damper unit 500 includes a first damper member 510 disposed at the center of the damper unit 500 and a second damper member 510 disposed at both sides of the damper unit 500 A second damper member 530 may be included.

The first damper member 510 includes a first slit plate 511 vertically installed with a plurality of slits 512 formed thereon and a second slit plate 511 horizontally joined to upper and lower portions of the first slit plate 511, And a first horizontal plate 513 which is joined to the lower flange 333 of the lower plate 300.

The second damper member 530 includes a second slit plate 531 vertically installed with a plurality of slits 532 formed thereon and a second slit plate 531 horizontally joined to upper and lower portions of the second slit plate 531, And a second horizontal plate 533 joined to the lower flange 333 of the lower plate 300.

As described above, in the embodiment of the present invention, the damper unit 500 is formed of three damper units 500. However, the number of the damper parts 500 is not limited to the number of the damper parts 500, and various modifications may be made.

2A to 3, a plurality of second horizontal plates 533 are formed to be bolted to the lower flange 333 and the joint 400 of the beam 300, And a bolt slot 534 formed along the longitudinal direction of the beam 300. Accordingly, when the external force is applied, the second damper member 530 can be installed to be movable in the horizontal direction by a predetermined distance.

That is, since the bolt slot 534 is formed long in the longitudinal direction of the beam 300, the longitudinal length d1 of the beam 300 of the bolt slot 534 is smaller than the length d1 of the lower flange of the beam 300 333 of the bolt holes 334, 434 formed in the second horizontal plate 433 and the bolt holes 334, 434 formed in the second horizontal plate 433.

That is, the lower flange 333 of the beam 300 and the bolt holes 334 and 434 formed in the second horizontal plate 433 are not formed in a slot-like shape, as in the embodiment shown in FIGS. 2A and 2B, Lt; RTI ID = 0.0 > generally < / RTI >

2B). When an external force is applied to the second damper member 530, the second damper member 530 is inserted into the bolt slot 534 in a state where the bolt 551 is fastened. Can slide in the longitudinal direction of the beam 300 as much as the clearance space. That is, the second damper member 530 is fastened to the lower flange 333 of the beam 300 and the second horizontal plate 433 by bolts, As shown in FIG.

At this time, the bolt hole 514 formed in the first damper member 510 may have a nominal dimension generally applied to the bolt hole, not the slot shape, as in the embodiment shown in FIG.

Accordingly, when an external force such as a seismic load is applied to the joint structure 100 between the column and the beam according to an embodiment of the present invention, the first damper member 510 disposed at the center of the damper unit 500 When an external force equal to or greater than a predetermined amount (for example, an external force of about 2 to 3% of the interlayer displacement ratio) is applied, the second damper member 530 disposed on both sides receives a force, 2 damper member 530 moves in the longitudinal direction of the beam 300 by a predetermined length.

By maximizing the effect of preventing damages and deformation of the column 200 and the beam 300 through the deformation and sliding movement of the damper unit 500, the damage and breakage of the damper unit 500 So that the damper unit 500 can exhibit sufficient strength.

The damper unit 500 includes a bolt 551 for fastening a bolt to the lower flange 333 of the beam 300 and the joint 400 and a nut 553 for fixing the bolt 551, . ≪ / RTI >

Since the damper unit 500 is bolted to the lower flange 333 and the joint unit 400 of the beam 300 as described above, when the damper unit 500 is deformed or damaged, Since the bolt fastening can be removed and replaced, the column 200 and the beam 300 can be continuously used.

The bolts 551 passing through the bolt slots 534 of the second damper member 530 may be fixed by a plurality of nuts 553a and 553b as in the embodiment shown in Figures 2b and 4, have.

As a result, the coupling force between the second damper member 530 and the lower flange 333 of the beam 300 and the joining portion 400 is increased, so that even when the second damper member 530 is slidingly moved, It is possible to provide an effect that the state is stably maintained.

However, the number of the nuts 553 provided in the bolt slot 534 is not limited to two, and various modifications can be made as long as the second damper member 530 can be firmly fixed. May be formed of three or more.

Meanwhile, the first damper member 510 may have a plurality of the first slit plates 511.

Accordingly, the first damper member 510, which receives a force when an external force is applied to the damper unit 500, can have an excellent resistance against load.

Hereinafter, the effect of the joining structure 100 between the column and the beam according to the embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG. 5 is a moment-to-stratigraphic displacement nonlinearity diagram of an experimental example for confirming the structural performance of the joint structure 100 of a column and a beam according to an embodiment of the present invention, and FIG. 6 is a cross- 3 is a photograph showing an experimental example using the bonding structure 100. Fig.

In the moment-to-stratigraphy displacement nonlinear diagram of FIG. 5, the vertical one-dot chain line represents the 4% point of the interlayer displacement ratio required in the special moment frame, and the horizontal one-dot chain line represents the 80% point of the total moment. 5, when the detail of the present invention using the damper part 500 at the joint between the column and the beam is used, the maximum interlayer displacement ratio is maintained at about 80% of the total moment of the beam 300 It is shown that the performance of the special moment frame is better than 6%, and the performance of the column-to-beam joint is excellent.

Referring to FIG. 6, when an external force is applied to the test body, deformation is concentrated on the damper unit 500, and the column and the beam are not deformed or broken. That is, by absorbing the load by the damper unit 500 and dissipating the energy, it is possible to minimize damage such as deformation and breakage of the column 200 and the beam 300, thereby improving the economical efficiency and structural performance of the structure .

According to the joining structure of the column and the beam according to the embodiment of the present invention, deformation and damage due to external force are concentrated on the damper portion provided on the lower flange of the beam at the column and the joining portion, The damage and deformation of the beam can be minimized, so that the damage control becomes easy.

Further, since the damper portion is bolted to the lower flange and the joint portion of the beam, when the damper portion is deformed or damaged, only the damper portion can be separated and replaced, thereby providing long-term use and reuse of the column and beam .

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention, It will be appreciated that those skilled in the art will readily understand the present invention.

100: Joining structure of column and beam 200: Column
300: beam 310: web
331: upper flange 333: lower flange
400: joining portion 410: first joining member
430: second joint member 500: damper part
510: first damper member 511: first slit plate
512: slit 513: first horizontal plate
530: second damper member 531: second slit plate
532: Slit 533: Second horizontal plate
534: bolt slot 551: bolt
553: Nuts

Claims (8)

Pillar;
A beam horizontally mounted on a side of the column, the beam having a web, an upper flange and a lower flange;
A joining portion joining the side surface of the column and the upper flange or the lower flange of the beam so as to connect the column and the beam; And
A damper part having a plurality of slit plates joined to the lower flange and the joining part of the beam so that the deformation is concentrated while absorbing the lateral load energy applied to the beam, the slits being formed at regular intervals;
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The damper portion is bolted to the lower flange and the joint portion of the beam,
Wherein the damper portion includes a first damper member disposed at the center of the damper portion and a second damper member disposed at both sides of the first damper member,
The second damper member includes a plurality of bolt slots which are formed to be bolted to the lower flange and the joining portion of the beam and are elongated along the longitudinal direction of the beam. When the external force is applied, the second damper member is horizontally And a movable member movable between a predetermined position and a predetermined position.
The method according to claim 1,
Wherein the first damper member is bolted to the lower flange of the beam and the joint by a circular bolt hole.
The method according to claim 1,
Wherein the first damper member includes a first slit plate vertically installed and having a plurality of slits formed therein and a first horizontal plate joined horizontally to upper and lower portions of the first slit plate and joined to the lower flange of the beam,
The second damper member includes a second slit plate vertically installed with a plurality of slits and a second horizontal plate horizontally joined to upper and lower portions of the second slit plate and joined to the lower flange of the beam The joint structure of the column and the beam.
The method of claim 3,
And the bolt slot is formed in the second horizontal plate.
The method according to claim 1,
Wherein the damper portion includes a bolt for bolt fastening to the lower flange of the beam and the joint portion, and a nut for fixing the bolt,
And the bolt passing through the bolt slot of the second damper member is fixed by a plurality of nuts.
The method of claim 3,
Wherein the first damper member has a plurality of the first slit plates.
7. The connector according to any one of claims 1 to 6,
A first joining member having a first vertical plate joined to a side surface of the column, and a first horizontal plate integrally joined to the first vertical plate and joined to an upper flange of the beam; And
A second joining member having a second vertical plate joined to a side surface of the column, and a second horizontal plate integrally joined to the second vertical plate and joined to the lower flange of the beam through a joint between the damper portion and the second vertical plate;
And a connecting structure between the column and the beam.
8. The method of claim 7,
Wherein the first joint member and the second joint member are bolted to the side surface of the column and the upper flange or the damper portion of the beam to join the column and the beam.

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