WO2020141792A1

WO2020141792A1 - Steel damper having plastic neck portion for earthquake-resistant reinforcement

Info

Publication number: WO2020141792A1
Application number: PCT/KR2019/018459
Authority: WO
Inventors: 최승호
Original assignee: 최승호
Priority date: 2019-01-02
Filing date: 2019-12-26
Publication date: 2020-07-09
Also published as: KR101982595B1

Abstract

The present invention relates to a steel damper having a plastic neck portion for earthquake-resistant reinforcement and, more specifically, to a steel damper installed so as to connect a pair of earthquake-resistant beams installed in a building to each other, the steel damper comprising: damper units comprising fastening portions disposed to penetrate through-holes of the earthquake-resistant beams, plastic neck portions formed on end portions of the fastening portions, and connecting portions formed on end portions of the plastic neck portions; a pair of fixing nuts fastened to fastening portions disposed to penetrate the through-holes, thereby fixing the damper units to the earthquake-resistant beams; and a coupler connected to the connecting portions of the damper units fastened to the earthquake-resistant beams, thereby connecting the damper units to each other. The steel damper is screw-fastened to earthquake-resistant beams formed in a building. The steel damper comprises a pair of damper units, a coupler for connecting the damper units, and fixing nuts for fixing the damper units. Respective elements of the steel dampers are assembled and installed. Accordingly, the steel damper is advantageous in that installation and separation are easy, and a component damaged by an earthquake can be partially replaced, thereby reducing the maintenance/repair cost.

Description

Steel damper with plastic wood for seismic reinforcement

The present invention relates to a steel damper having a plastic neck for seismic reinforcement, and more specifically, a coupler for screwing a steel damper to a seismic beam formed in a building and connecting a damper unit with a pair of damper units. And it is composed of fixing nuts that fix the tamper unit, so that they are installed by assembly, so it is easy to install and separate, and can be partially replaced in case of damage to parts due to earthquakes. It relates to a steel damper having.

Recently, as concerns about earthquake damage have spread, seismic design for structures such as buildings and bridges has attracted attention. Seismic design is a comprehensive construction method to protect various buildings from the impact of an earthquake, and can be roughly divided into seismic, seismic, and vibration-proof designs.

First of all, seismic design includes seismic and vibration damping design in a broad sense. However, by narrowing the meaning, it can be explained only by design techniques that overcome the impact of an earthquake through the history of the building itself. This seismic design maintains structural stability from earthquakes by increasing the strength and toughness of the various members that make up the building, thereby increasing the robustness of the building itself.

In addition, the seismic isolation design is a technique that blocks or reduces the impact of an earthquake from the ground to a building, and is also called an earthquake evasion or seismic isolation structure that avoids earthquakes. Normally, a building is inevitably built on the ground, so it is not possible to completely block the earthquake propagating through the ground, but using the above-described seismic isolation design can significantly mitigate the impact of the earthquake. However, the seismic isolation design is effective for very strong earthquakes and is very expensive.

On the other hand, the vibration suppression design is a structure to extinguish the impact of an earthquake on a building, artificially adjusting the frequency of the building according to the vibration characteristics of the earthquake wave to prevent the resonance of the building, and further offset the vibration of the building and the vibration of the earthquake wave It is a design method to reduce earthquake shock by making

As a vibration damping method for applying the above-described vibration damping design to a steel structure or a concrete structure, there are a method using a hydraulic damper or a steel damper.

The vibration damping structure using the hydraulic damper is a technique mainly used in Japan, where heavy and heavy earthquakes occur frequently throughout the country. The design is excellent so that the external environment is not rough, and the seismic reinforcement performance is very excellent. However, it takes a lot of construction cost, and it is an excessively reinforced method that is unnecessary when considering the frequency or magnitude of earthquakes in Korea.

In addition, the seismic reinforcing method using the steel damper is a technology developed and used domestically and abroad, and has a lower construction cost than the seismic reinforcing method using a hydraulic damper, and is mainly used for reinforcing steel structures.

However, most of the vibration damping structures using the above-described steel dampers are widely used to reinforce structures. As a type of shape, it is not suitable for structures that require spatial obstacles, variable structures, and secure visibility, and most of them have troublesome replacements after an earthquake. Therefore, it is difficult to apply as a damping structure of a reinforced concrete structure requiring a variable structure, and it is inefficient to replace and reinstall the damping device after an earthquake.

Therefore, an optimal seismic control effect can be obtained at a reasonable cost, and there is an urgent need for a new steel damper that can be easily replaced after an earthquake.

The present invention has been devised to solve the above-mentioned conventional problems, and the object of the present invention is to securely fasten a steel damper to an earthquake-resistant beam formed in a building and connect a pair of damper units and damper units to a steel damper. It is composed of a fixing nut that fixes the coupler and the tamper unit, and is installed by assembly, so it is easy to install and separate, and can be partially replaced when a component is damaged due to an earthquake, thereby reducing maintenance costs. It is to provide a steel damper having a neck.

A steel damper having a plastic wood for seismic reinforcement according to an aspect of the present invention is a steel damper installed by interconnecting a pair of seismic beams installed in a building, the fastening part being disposed to penetrate a through hole of the seismic beam and the A damper unit consisting of a plastic neck formed at an end of a fastening part and a connection part formed at an end of the plastic neck, and a pair of fasteners fastened to the fastening part arranged to penetrate the through-hole, thereby fixing the damper unit to the seismic beam A fastening nut and a coupler coupled to the connection portion of the damper unit fastened to the load-bearing beam may be provided to couple the damper units to each other.

In addition, a connection shaft is further formed on the fastening portion, a coupling portion is further formed on the connection shaft, and a coupling nut may be further provided on the inner panel of the seismic beam so that the coupling portion is fastened.

In addition, an elastic washer is further disposed between the fixing nut screwed to the fastening part and the outer panel of the seismic beam, so that the fastened fastening nut can be prevented from being loosened.

In addition, the outer diameter of the plastic neck formed in the damper unit may be formed smaller than the outer diameter of the fastening portion and the connecting portion.

In addition, an elastic coil spring may be further fitted to the plastic neck to prevent it from being cut while supporting the plastic neck during plastic deformation due to an earthquake.

The steel damper having a plastic neck for seismic reinforcement according to the present invention is a steel damper screw-fastened to an earthquake-resistant beam formed in a building, and a coupler and a tamper unit for connecting a damper unit and a pair of damper units are fixed. Since it is composed of fixed nuts and installed by assembly, it is easy to install and separate, and it is possible to replace parts partially when an earthquake breaks parts, thereby reducing maintenance costs.

1 is a view showing a steel damper having a plastic neck for seismic reinforcement according to a first embodiment of the present invention installed in a building.

2 is a view showing a steel damper having a plastic neck for seismic reinforcement according to the first embodiment of the present invention.

Figure 3 is an exploded view showing a steel damper having a plastic neck for seismic reinforcement according to the first embodiment of the present invention.

4 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to the first embodiment of the present invention is installed on an earthquake-proof beam.

5 is a cross-sectional view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a first embodiment of the present invention is installed on an earthquake-proof beam.

6 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a second embodiment of the present invention is installed on an earthquake-proof beam.

7 is an exploded view showing a steel damper having a plastic neck for seismic reinforcement according to a third embodiment of the present invention.

8 is an exploded view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a third embodiment of the present invention is installed on an earthquake-proof beam.

9 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a fourth embodiment of the present invention is installed on an earthquake-proof beam.

10 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a fifth embodiment of the present invention is installed on an earthquake-proof beam.

11 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a sixth embodiment of the present invention is installed on an earthquake-proof beam.

12 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to a seventh embodiment of the present invention is installed on an earthquake-proof beam.

Hereinafter, a preferred embodiment of a steel damper having a plastic neck for seismic reinforcement according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following examples are not intended to limit the scope of the present invention, but to be presented by way of example only, and there may be various embodiments implemented through the technical idea.

1 is a view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to the first embodiment of the present invention is installed in a building, and FIG. 2 has a plastic neck for seismic reinforcement according to the first embodiment of the present invention. Figure 3 is a view showing a steel damper, Figure 3 is an exploded view showing a steel damper having a seismic reinforced plastic neck according to the first embodiment of the present invention, Figure 4 is a seismic reinforced plastic neck according to the first embodiment of the present invention It is a view showing a state in which a steel damper having a seismic beam is installed, and FIG. 5 is a cross-sectional view showing a state in which a steel damper having a plastic neck for seismic reinforcement according to the first embodiment of the present invention is installed in an seismic beam.

1 to 5, the present invention is a steel damper 10 having a plastic neck for seismic reinforcement (hereinafter referred to as a steel damper for convenience of description) is a pair of seismic beams 200 installed in the building 100 ) Are interconnected with each other and are disposed inside the building and are plastically deformed to prevent the building from being destroyed by plastic deformation when an external force occurs due to an earthquake.The steel damper 10 is fixed to the damper unit 20 It consists of a nut 30 and a coupler 40.

The seismic beam 200 is formed at the end of the bearing portion 300 installed in the interior of the building 100 in order to improve the supporting force of the building 100, the steel damper 10 is shown in Figure 1 Likewise, it is installed by connecting the bearing unit 300.

The damper unit 20 includes a fastening portion 21 disposed to penetrate the through hole 230 of the seismic beam 200 and a plastic neck portion 22 and the plastic wooden portion formed at the ends of the fastening portion 21. It consists of a connecting portion 23 formed at the end of (22). The through hole 230 is formed in the outer panel 210 of the seismic beam 200. The seismic beam 200 may be a “H” beam made of steel.

A fastening screw portion 211 is formed on an outer surface of the fastening portion 21, a connecting screw portion 231 is formed on an outer surface of the connection portion 23, and the fixing nut 30 is fastened on the fastening screw portion 211. The connection screw portion 231 is fastened to the coupler 40.

The outer diameter of the plastic neck portion 22 formed on the damper unit 20 is formed smaller than the outer diameter of the fastening portion 21 and the connecting portion 23.

That is, since the outer diameter of the plastic neck portion 22 is formed smaller than the outer diameters of the fastening portion 21 and the connecting portion 23, when an earthquake occurs, it is not cut but bends, bending and causing plastic deformation to support the deformed building 100. This is to prevent the building 100 from being destroyed. The plastic neck 22 is preferably formed of a metal material having a physical property that is bent at a certain angle when an external force is applied.

The fixing nut 30 is fastened to the fastening portion 21 which is disposed to penetrate the through hole 230, thereby fixing the damper unit 20 to the seismic beam 200.

The fixing nuts 30 are screwed to one end of the fastening portion 21 that has penetrated the through hole 230 and the other end of the fastening portion 21 that has not penetrated, so that the fastening portion 21 is seismic. It is fixed to the beam 200.

On the other hand, the steel damper 10 having a plastic neck for seismic reinforcement according to the above-described embodiment may be modified and implemented.

As shown in FIG. 6, an elastic washer 212 is further disposed between the fixing nut 30 screwed to the fastening portion 21 and the outer panel 210 of the seismic beam 200, so that the elasticity The pressing nut 212 may be configured to prevent the fixing nut 30 fastened to the fastening portion 21 from being loosened by the elasticity of the elastic washer 212 while pressing the washer 212.

In the coupler 40, the connection screw portion 231 formed on the connection portion 23 of the damper unit 20 fastened to the load beam 200 is screwed to the inner periphery, and the damper units 20 are mutually connected. Will be connected.

At this time, the connection portion 23 formed on the pair of the damper unit 20 is fastened to the coupler 40, by pulling or loosening the connection portion 23 fastened to both ends by rotation of the coupler 40, It is possible to adjust the tensile force and compression force received by the steel damper 10.

Steel damper 10 having a plastic neck 22 for seismic reinforcement constructed as described above is a structure in which a pair of damper units 20 are screwed and fastened to a coupler 40 and an earthquake-resistant beam 200 with a nut. Consisting of, it can be easily separated from the coupler 40 and the seismic beam 200 of the damper unit 20 plastically deformed after an earthquake occurs, and can be easily replaced with another damper unit 20 The time and cost associated with maintenance can be greatly reduced.

In addition, the length of the entire steel damper can be increased or decreased by the fastening of the fixing nut 30 and the fastening of the coupler 40, so that the steel damper 10 is separately fitted to the fastening distance with the seismic beam 200. There will be no uncomfortable problems that need to be produced.

7 is an exploded view showing a steel damper having a plastic neck for seismic reinforcement according to a third embodiment of the present invention, and FIG. 8 is a steel damper having a plastic neck for seismic reinforcement according to the third embodiment of the present invention, It is an exploded view showing the state installed in.

Referring to FIGS. 7 and 8, a connection shaft 24 is further formed on the fastening portion 21, and a connection portion 25 on which the coupling screw portion 251 is formed on the outer surface of the connection shaft 24 is further formed. In addition, a coupling nut 50 is further provided on the inner panel 220 of the seismic beam 200 so that the coupling portion 25 is fastened to the coupling nut 50 welded to the inner panel 220. By allowing the coupling portion 25 to be screwed, the supporting force of the steel damper 10 is improved, and the damper unit 20 is prevented from being separated from the seismic beam 200.

Referring to FIG. 9, an inside of the coupler 40 is further provided with a pressurized coil spring 41 to compress the pressurized coil spring 41 while compressing the fastening part 21 fastened to the coupler 40. By pressing by the elasticity of the pressurized coil spring 41, the fastening portion 21 fastened to the coupler 40 is prevented from being loosened or separated.

It is preferable that the central portion of the pressurized coil spring 41 is fixed to the inner center of the coupler 40 by welding or screwing.

Referring to FIG. 10, the plastic neck 22 is further fitted with a reinforced coil spring 221 to support the plastic neck 22 and prevent it from being cut during plastic deformation due to an earthquake.

The reinforcing coil spring 221 is preferably fastened to the inner surface so as to be in close contact with the plastic neck 22, and the restoration coil spring supports the plastic neck 22 bent by an earthquake to reduce deformation. At this time, the reinforcing coil spring 221 may be fixed to the plastic neck 22 by welding after being fitted to the plastic neck 22.

The inside of the reinforcing coil spring 221 is further fixed by welding an elastic bar along the longitudinal direction, so that the elasticity of the reinforcing coil spring 221 and the elastic bar can reduce deformation of the plastic neck due to external force. .

Referring to FIG. 11, the connection screw portion 231 of the damper unit 20 is fastened to the nut block N rather than the fixing nut 30 and the coupling nut 50 formed in a hollow structure, and the It is also possible to fix the connection screw portion 231 disposed through the earthquake-proof beam 200.

Referring to FIG. 12, one damper unit 20 is formed with a fastening portion 21 having a fastening screw portion 211, and the other is formed with a nut block so that the fastening screw portion 211 is fastened to each other to fasten the screws. It is also possible.

One embodiment of the present invention described above is merely exemplary, and those skilled in the art to which the present invention pertains will appreciate that various modifications and other equivalent embodiments are possible. . Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims.

Claims

As a steel damper installed by interconnecting a pair of seismic beams installed in a building,

A damper unit comprising a fastening part disposed to penetrate the through hole of the seismic beam, a plastic neck formed at an end of the fastening part, and a connection part formed at an end of the plastic neck;

A pair of fastening nuts which are fastened to a fastening part disposed to penetrate the through-hole to fix the damper unit to the seismic beam; And

A steel damper having a plastic neck for seismic reinforcement, characterized in that it is formed of a coupler that is connected to the damper unit connected to the load beam and interconnects the damper units.
According to claim 1,

A connection shaft is further formed in the fastening portion, and a coupling portion is further formed in the connection shaft,

A steel damper having a plastic neck for seismic reinforcement, characterized in that a coupling nut is further provided on the inner panel of the seismic beam so that the coupling part is fastened.
According to claim 1,

An elastic washer is further disposed between the fixing nut screwed to the fastening part and the outer panel of the seismic beam to prevent loosening of the fastened fastening nut.
According to claim 1,

A steel damper having a plastic neck for seismic reinforcement, characterized in that the outer diameter of the plastic neck formed in the damper unit is smaller than the outer diameter of the fastening part and the connection part.
According to claim 1,

A steel damper having a plastic neck for seismic reinforcement, characterized in that an elastic coil spring is further fitted to the plastic neck to prevent it from being cut while supporting the plastic neck during plastic deformation due to an earthquake.