KR101372087B1 - Strengthen method for steel frame structure using seismic control device - Google Patents

Abstract

A method for reinforcing a steel frame structure, using an unit modular earthquake load absorbing device, according to the present invention comprises: (a) a step of demolishing a partition wall in a steel frame structure composed of steel frame columns and beams; (b) a step of arranging unit modular earthquake load absorbing devices in a row to form an impact-cushioning space unit by coming in contact with an impact damping unit, and of fixating each unit modular earthquake load absorbing device on upper and lower beams, wherein the unit modular earthquake load absorbing device is composed of: a corrugated web on which the impact damping unit, which has a form in which the center part of both ends of a corrugated steel sheet is inserted into a space composed of the steel frame columns and beams, and supporting members formed on the upper and lower ends of the corrugated web respectively by including an H-shaped steel beam and end plates formed on both ends thereof; and (c) a step of installing multiple finish panels on the front side of the space composed of the steel frame columns and beams, of fixating an angle on the center part of the finish panel, and of combining and installing the angle with and on the flange of the upper and lower beams. The method for reinforcing a steel frame structure is provided to simplify construction by being composed of a dry construction in which the earthquake load absorbing devices, which are unit-modularized, are arranged in a row and fixed, and which has the finish panel formed on the front side, and to efficiently improve the resistance ability of a building against earthquake load by displaying accordion effect according to plastic deformation which is generated by the corrugated web of the unit modular earthquake load absorbing device.

Description

Structural method for steel frame structure using seismic control device

The present invention in the space between the columns and beams in the steel structure, by simply paralleling the unit modularized seismic load absorber to construct a partition wall of the pure dry method, so as to have a function to absorb and reduce the seismic load The present invention relates to a steel structure reinforcement method using a unit modular seismic load absorber.

Recently, due to a series of large earthquakes occurred at home and abroad, awareness about the damage of earthquake and necessity of seismic design is spreading. Especially, important earthquake damage such as museums, nuclear power plants, and large structures such as high-rise buildings, stadiums and bridges are accompanied by huge damage to life and property. In addition, since the remodeling of residential buildings is widely promoted, there is a growing interest in seismic strengthening methods of buildings constructed before the earthquake - resistant design standards are applied.

In general, steel structures have been widely used in infrastructure facilities and plants, and existing structures have been designed to meet the requirements of national design (earthquake) standards at the time. However, The seismic design criteria is judged to be the installation of reinforcement structures through the reinforcement design of existing facilities. Most of the braces are designed to receive tensile force and have a large slenderness ratio. When they receive compressive force, they cause elastic buckling, failing to function as a brace.

In addition to the seismic design, which is designed to resist the building's seismic resistance, the building is separated from the ground and the building's vibration cycle is moved away from the main period of the earthquake, Seismic Isolation and Seismic Control to Minimize the Damage of Buildings by Reducing Input Energy by Using Various Dampers to Minimize Life and Property Damage by Earthquake .

As a background of the present invention, there is a patent registration No. 1026106 entitled " Lamination structure of damper damper frame and method of joining "(patent document 1).

In the background art, in the installation frame for installing the damping damper in the existing building, as shown in Figure 7, the anchor bolt 720 is inserted into a plurality of openings perforated on the surface 710 chipping the existing concrete, the chipping A base plate 730, which is supported on a surface and is fixed through a plurality of openings arranged in the center of the body, is formed between the chipping surface and both ends of the base plate, and has a predetermined space therebetween. Spacer to form a spaced apart from the base plate, the anchor bolt is passed through a plurality of openings formed in the body to correspond to the opening of the base plate, the vibration damper 800 and the brace connected to the vibration damper 900 Damper frame 740 is connected to the fixing agent to be integrated between the chipping surface and the base plate, and the base play A joint structure of a vibration damper installation frame including a filler that is integrated into a space between a damper and a damper frame is proposed.

However, in the background art, the construction process is complicated because the damping damper is installed by chipping the existing concrete wall, and there is a problem that it is difficult to use when constructing or constructing a partition wall that divides the thread from the thread.

Patent Registration No. 1026106 "Joining structure of joining damper mounting frame and joining method"

The present invention can be reinforced by a pure dry method by constructing a partition wall to be installed in the space between the pillar and the beam in the steel structure simply separating the seal and the seal by arranging the unit modularized seismic load absorber in parallel. Unit modular seismic load absorber that can simplify the construction and improve the building's resistance to earthquake loads by enabling the waveform web of the unit modular seismic load absorber to generate plastic deformation and express the accordion effect. Its purpose is to provide a steel structure reinforcement method using.

According to a preferred embodiment of the present invention (a) the step of removing the partition wall in the steel structure consisting of steel pillars and beams; (b) a corrugated web having an impact damping portion having a shape in which a central portion of both ends formed of a corrugated steel plate and a corrugated steel sheet is drawn inwardly, and an H-shaped steel and end plates formed at both ends of the corrugated steel sheet; Unit modular earthquake load absorbing devices composed of support members respectively formed on the upper and lower ends of the web are arranged in parallel so that a shock absorbing portion is in contact with the buffer damping portion, and the supporting members of the respective unitary earthquake load absorbing devices are fixed to upper and lower beams. Making; (c) installing a plurality of finishing panels on the front of the space consisting of steel pillars and beams, fixing the angle to the center of the finishing panel and coupling the angles to the flanges of the upper and lower beams; The present invention is to provide a steel structure reinforcement method using a unit modular seismic load absorber.

In addition, when the unit modular seismic load absorbing device is arranged in parallel, the unit modular seismic load absorbing device is characterized in that the impact damping material formed of high damping rubber is formed between the unit modular seismic load absorbing device and the unit modular seismic load absorbing device. To provide a method of reinforcing steel structures using.

In addition, when the unit modular seismic load absorber is arranged in parallel to provide a method for reinforcing steel structure using a unit modular seismic load absorber, characterized in that the buffer plate is installed over the entire height of the column surface facing both pillars. I will.

In addition, the buffer plate is to provide a steel structure reinforcement method using a unit modular seismic load absorbing device, characterized in that composed of high damping rubber.

The present invention can be reinforced by a pure dry method by constructing a partition wall to be installed in the space between the pillar and the beam in the steel structure simply separating the seal and the seal by arranging the unit modularized seismic load absorber in parallel. While the construction can be simplified, the waveform web of the unit modular seismic load absorber can cause plastic deformation to produce an accordion effect, which can effectively improve the building's resistance to earthquake loads.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view showing a unit modular seismic load absorbing device installed in a steel structure according to the present invention, Figure 2 is an exploded perspective view.
3 is a perspective view showing another embodiment of the corrugated web according to the present invention.
Figure 4 is a view showing a coupled state of the seismic load absorber of the present invention.
5 is a front view sequentially showing a method for reinforcing steel structures using a unit modular seismic load absorbing apparatus according to the present invention.
Figure 6 is a side cross-sectional view of the steel structure is installed unit modular seismic load absorber of the present invention.
7 is a perspective view showing a bonding structure of a conventional vibration damper installation frame.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Prior to explaining the method for reinforcing steel structure using the unit modular seismic load absorbing device according to the present invention, a seismic load absorbing device installed on the steel structure and giving a seismic load absorbing function will be described.

1 is a perspective view illustrating a unit modular earthquake load absorbing device installed in a steel structure according to the present invention.

As shown in FIG. 1, the unit modular seismic load absorbing apparatus 10 according to the present invention includes a corrugated web 100 formed of corrugated steel sheet and support members respectively formed at upper and lower ends of the corrugated web 100. 200). The height of the corrugated web 100 may be variously configured to match the overall height of the lower surface of the beam and the upper surface of the slab where the partition wall is to be constructed.

2 is an exploded perspective view of a unit modular seismic load absorbing device installed in a steel frame structure according to the present invention.

Corrugated web 100 is composed of corrugated steel sheet (corrugated steel) to prevent relative displacement (slip) at the interface between the corrugated web 100 and wall concrete by mechanical engagement with concrete, so that they are synthesized integrally. Improves resistance to buckling and torsion.

The impact damping unit 110 is configured in a shape in which the central portions of both ends of the corrugated web 100 are drawn inward. This is to absorb the seismic load while the corrugated web 100 plastic deformation as the accordion during the seismic load action.

The support member 200 is composed of a web 12 connecting the upper flange 11, the lower flange 13, and the upper and lower flanges in the widthwise center in the shape of a general H-shaped steel, and additionally the upper and lower flanges 11 and 13. An end plate 14 is connected to connect both ends of the side wall.

The end plate 14 is configured to couple the side of each adjacent unit modular seismic load absorber 10 when a plurality of unit modular seismic load absorbers 10 are arranged in parallel in a position where the partition wall is to be constructed. .

The end plates 14 may be joined by various known methods, such as welding with each other, or may be through the fastening hole 141 and bolted through the fastening hole 141.

The support member 200 has a predetermined thickness and width, and may be made of various materials, but it is advantageous to combine the other members with various steel materials. The upper flange 11 may be formed by drilling a plurality of anchor bolt insertion holes for fixing the upper flange 11 at regular intervals along the longitudinal direction. The upper flange 11 may be fixed to the beam in a variety of ways well known in the art to be able to behave integrally with the beam during seismic loading.

The support member 200 is fixed to the beam 30 so that the displacement is concentrated on the corrugated web 100 when the external force is applied.

As shown in FIG. 3, the corrugated web 100 may be made of, for example, cold-rolling, and the shape of the valley is not limited to a rounded shape (a), a curved square (b), and various shapes. It may be configured as.

Figure 4 is a view showing a coupled state of the seismic load absorber of the present invention, Figure 4a is a perspective view, Figure 4b is a front view.

In the present invention, since the waveform web 100 is formed almost as long as the height of the space between the beam and the slab, the displacement amount of the waveform web 100 in the structure in which a plurality of unit modular seismic load absorbers 10 are installed in parallel. The lower it goes to the side.

As shown in FIG. 4A, when the shock attenuation portions 110 are formed on both sides of the corrugated web 100, and the unit modular seismic load absorber 10 is disposed in parallel, the unit modular seismic load absorber 10 is provided. Adjacent impact attenuation portions 110 and 110 of the (10) meet to form a buffer space portion 120.

The corrugated web 100 of the unit modular seismic load absorbing device 10 is plastically deformed by the seismic lateral force, and the shock absorbing space 120 resists to some extent and increases the displacement so that the impact amount can be attenuated when the supporting load is applied. will be.

As shown in FIG. 4B, the shock absorbing material 300 is formed in the buffer space part 120 to be described later with high damping rubber, and the viscoelastic resistance and deformation between the unit modular earthquake load absorbing devices 10. To absorb energy while doing so.

In the following, a method of constructing the partition wall using the seismic load absorbing device constructed as described above will be described.

5 is a front view sequentially showing a method for reinforcing steel structures using a unit modular seismic load absorbing apparatus according to the present invention.

As shown in Figure 5a, after the construction of the steel frame is completed or when adding the seismic load resistance system by the partition wall to the existing building to remove the existing masonry, lightweight concrete partition wall (a).

Thereafter, the unit modular earthquake load absorbing device 10 is sandwiched between the upper and lower beams 30 and 30 and between the adjacent two columns 20 and 20 and the upper and lower beams 30 and 30, ).

First, the unit modular seismic load absorber 10 is installed in a position to be constructed as shown in FIG. 5B, and the unit modular seismic load absorber 10 is disposed in parallel, and the upper and lower beams 30 and 30 are disposed. Each of the support members 200 are installed in combination. This is to fix and restrain the support member 200 to the beam 30 in order to concentrate the displacement on the corrugated web 100 when the external force is applied.

The method of installing the upper beam 30 on the lower surface and the upper surface of the lower beam is identical to the method of fixing the support member 200, 10 is installed as an example.

First, in order to fix the support member 200 to the beam 30, the upper flange 11 of the support member 200 is fixed to the lower surface of the beam 30. The upper flange 11 can be fixed in a variety of ways known in the art that can be firmly fixed to the beam 30 so that it can be integrally behaved with the beam 30 when an earthquake load is applied.

As an example, the anchor hole is drilled on the lower surface of the beam and the anchor bolt 112 is inserted, and then the anchor bolt 112 is fixed by filling the non-shrink mortar with the anchor hole and fixing the anchor bolt insertion hole to the upper flange 11. After drilling, the anchor bolt 112 may be fixed by penetrating the anchor bolt insertion hole and fastening the nut. Thereafter, the corrugated web 100, which is made of corrugated steel sheet, is joined over the entire length of the lower flange 13 of the supporting member 200, and the upper surface of the corrugated web 100 is in the longitudinal direction of the lower flange 13. Position it in the center. The support member 200 is also coupled to the bottom surface of the corrugated web 100 in the same manner.

Unit modular seismic load absorbing device 10 composed of the corrugated web 100 and the support members 200 respectively configured on the upper and lower ends of the corrugated web 100 may be welded and assembled in the field, but before installation in the beam, It is possible to shorten the construction process by assembling and fixing it at the site to be constructed at the site.

Referring to FIG. 4B, when the unit modular seismic load absorber 10 is disposed in parallel, an impact damping material including high damping rubber between the unit modular seismic load absorber 10 and the unit modular seismic load absorber 10 ( 300) can be configured.

The impact damping material 300 absorbs energy while making viscoelastic resistance and deformation between the unit modular earthquake load absorbing devices 10 when the corrugated web 100 undergoes plastic deformation while accommodating the earthquake while acting as an earthquake. . The impact damping material 300 may be any high damping rubber known in the art, and generally, after adding additives such as fillers, vulcanizing agents, antioxidants and plasticizers to natural rubber or / and carbon black, It is manufactured through vulcanization process under pressure and pressure. The elasticity of the high-damping rubber can be adjusted according to the proportion of the additive, and the energy-dissipating ability depends on the elasticity. The impact damping material 300 may be secured by using an adhesive or protrusions or protrusions in addition to the contact surface with the impact damping part 110 to secure the fixing force at the installation position.

When arranging a plurality of unit modular seismic load absorbers 10 in parallel in a position where a partition wall is to be constructed, the side plates of adjacent unit modular seismic load absorbers 10 are welded to each other. The coupling may be performed by various known methods, such as, or may be through the fastening hole 141 to the end plate 14 and bolted through the fastening hole 141.

During the seismic load action, the waveform web 100 absorbs the seismic load while plastically deforming like an accordion. In the structure in which a plurality of unit modular seismic load absorbers 10 are installed in parallel as in the present invention, the waveform web 100 Since the displacement amount of the lower toward the side, the impact damping material 300 or the shock attenuating portion 110 constitutes a space portion, the earthquake web 100 of the unit modular seismic load absorbing device 10 when the earthquake load acts directly hit each other A material capable of absorbing the horizontal displacement of the earthquake load absorbing device 10 is used with a shock absorbing function to prevent it.

When the unit modular seismic load absorbing devices 10 are arranged in parallel, the buffer plates 70 can be installed over the entire height of the column surfaces facing the pillars 20 on both sides.

A buffer plate (70) is installed over the entire height on the column surface facing the pillars (20) on both sides. Accordingly, the buffer plate 70 is disposed between both ends of the pillars 20 and both ends of the unit modular seismic load absorber 10. The buffer plate 70 is made of a material capable of absorbing the horizontal displacement of the seismic load absorbing device 10, as well as a buffer function for preventing the column 20 from directly colliding with the seismic load absorbing device 10 when an earthquake load is applied do. Various materials known in the art which perform this function may be used, for example, rubber or rubber foam may be used, and the buffer plate 70 may be formed of the same high damping rubber as the impact damping material 300. have.

Finally, as shown in Figure 5c, a plurality of finishing panels 50 are installed in the front portion of the space consisting of steel pillars 20, 20 and beams 30, 30.

Figure 6 is a side cross-sectional view of the steel structure is installed unit modular seismic load absorber of the present invention.

At this time, as shown in Figure 6, to fix the angle 51 to the center of the upper and lower ends of the finishing panel 50 and to install the angle 51 coupled to the flange of the upper and lower beams 30, 30 do. The angle 51 may be an angle of various shapes such as an L-shaped clip angle.

As such, the upper and lower ends of the finishing panel 50 are pin-bonded with bolts, respectively, so that when the earthquake displacement occurs, the finishing panel 50 is rotated for each sheet to follow the interlayer deformation angle up to 1 / 100rad, thereby improving displacement tracking performance. It is to improve the vibration damping performance.

As described in detail above, according to the present invention, an earthquake load absorbing device is installed at the top and the bottom of the partition wall, respectively, and the earthquake load absorbing device 10 has the strength of the filler material 15 of the pillars 20 and the beams 30. Since the seismic load is lower than the seismic load is concentrated in the seismic load absorber (10). Therefore, the waveform web 100 causes plastic deformation. That is, the seismic load absorbing device according to the present invention is similar to the displacement dependent energy dissipating device using energy dissipation characteristics due to plastic deformation of metal, so that the waveform web 100 is deformed like an accordion and absorbs seismic loads to the main structural member. This reduces the transmitted seismic loads. Therefore, it is possible to prevent damage to the main structural members due to the earthquake load, and after the earthquake, only the earthquake load absorbing device needs to be replaced, so maintenance is easy.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Unit modular earthquake load absorber
11: upper flange 12: web
13: bottom flange 14: end plate
15: filler 20: pillar
30: Bo 50: Finishing Panel
51: Angle 70:
100: Waveform web 110: Shock attenuator
112: anchor bolt 120: buffer space portion
141: fastening hole 200: support member
300: impact damping material 710: chipping surface
720: Anchor bolt 730: Base plate
740: damper frame 770: nut member
800: vibration damper 900: brace

Claims (4)

(a) removing the partition wall from the steel structure including the steel pillars 20 and the beams 30;
(b) a corrugated web having an impact damping part 110 formed of a shape in which a central portion of both ends formed of corrugated steel sheets is inserted inwardly in a space formed of steel pillars 20, 20, and beams 30, 30. Unit modular seismic load absorbing device (100) and an end plate (14) formed at both ends and composed of support members (200) formed at upper and lower ends of the corrugated web (100). 10 is arranged in parallel so that the shock attenuation portion 110 is in contact with the buffer space portion 120 is formed, and the support member 200 of each unit modular seismic load absorbing device 10 in the upper and lower beams 30, 30 Fixing 200;
(c) Installing a plurality of finishing panels 50 on the front of the space consisting of steel pillars 20, 20 and beams 30, 30, the angle 51 in the center of the finishing panel 50 Fixing and installing the angle (51) coupled to the flange of the upper and lower beams (30) (30); unit modular earthquake load reinforcement method comprising a. The method according to claim 1,
In step (b), when the unit modular seismic load absorber 10 is disposed in parallel, a high damping rubber is provided in the buffer space 120 between the unit modular seismic load absorber 10 and the unit modular seismic load absorber 10. Steel structure reinforcement method using a unit modular seismic load absorber, characterized in that the shock attenuator 300 is formed. The method according to claim 1,
In the step (b), when the unit modular earthquake load absorbing device 10 is arranged in parallel unit characterized in that the unit is configured by installing the buffer plate 70 over the entire height of the column surface facing both pillars 20 Reinforcement method of steel structure using modular seismic load absorber. The method of claim 3,
Shock absorbing plate 70 is a steel structure reinforcement method using a unit modular seismic load absorber, characterized in that composed of high damping rubber.

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