KR102303102B1 - Vibration control damper for seismic retrofitting of structures - Google Patents

Abstract

The present invention provides a damper for reinforcing the seismic performance of a building structure. The damper comprises: an inner tube having a plurality of first wire grooves; a first connection part fixed to an outer tube, having a first rod integrally formed on an inner side of the center thereof to be inserted into the inner tube, having a first clevis eye integrally formed outside the center thereof, and having a plurality of first sockets arranged at the edge thereof; an inner end plate fixed to the inner tube, having a through hole formed in the center thereof, having a plurality of second sockets arranged at the edge thereof, and having a plurality of third sockets formed between the through hole and the second sockets; a second connection part having a second rod movably inserted into the inner tube, having a plurality of second wire grooves formed on the outer circumference of the second rod, and having a second clevis eye integrally formed at one front end of the second rod and exposed to the outside of the inner end plate through the through hole; a plurality of first wires inserted into the first wire grooves of the inner tube, and fixed to the first sockets of the first connection part and the second sockets of the inner end plate; an anchor head fixed to an opposite front end of the second connection part, and having a plurality of fourth sockets arranged at the edge thereof; and a plurality of second wires inserted into the second wire grooves of the second connection part, and fixed to the third sockets of the inner end plate and the fourth sockets of the anchor head.

Description

Damper for reinforcing seismic performance of building structures

The present invention relates to a damper used to reduce vibration or shock from external energy such as an earthquake or typhoon, and more particularly, to prevent buckling through compressive strength and tensile strength when an earthquake occurs, as well as to self-resist the earthquake shock. It relates to a damper for reinforcing the seismic performance of a building structure that can safely protect the building structure by absorbing it.

With the recent increase in the frequency and magnitude of earthquakes on the Korean Peninsula, an energy dissipation damping device, a type of passive vibration damping device, was used to reinforce the seismic performance of new buildings or old buildings built before seismic design standards were established and applied. A method for reducing the input amount or improving the deformability of a building has been proposed.

For example, during remodeling construction, earthquake-resistance reinforcement work for the frame has many restrictions in construction, so seismic reinforcement construction through the installation of an energy dissipation type vibration damping device is being carried out a lot.

The passive type energy dissipation type vibration damping device is mainly installed on each floor of a building structure in order to increase safety against earthquake and wind habitability. It is classified as a displacement-dependent device).

The speed-dependent type includes a viscous damper and a viscoelastic damper in which the damping force is proportional to the speed. As a displacement-dependent type, a hysteretic damper and a friction damper in which the damper itself dissipates energy due to its plastic behavior are representative.

The viscous damper is a damper with the principle that energy is absorbed by the flow of high viscous fluid in the cylinder, and stable energy dissipation is achieved even in a wide frequency range. It has the advantage of being easy to apply.

The viscoelastic damper is a damper that uses the principle of dissipating vibration energy as heat by shear deformation of rubber and polymer-based viscoelastic materials.

Friction dampers dissipate energy by converting kinetic energy into thermal energy, and energy dissipation occurs only when the displacement of the structure exceeds a certain level.

The plastic damper has a principle of absorbing energy by stable hysteresis behavior in the inelastic region of the material.

In particular, the plastic damper is not sensitive to the influence of external environment such as temperature, so it exhibits high-efficiency structural performance compared to the cost. Therefore, it can be installed during a short construction period at a low cost without affecting the architectural plan such as the movement line and floor plan of the building.

In addition, energy input to the main structure with low horizontal rigidity is concentrated and dissipated in the plastic damper exhibiting high horizontal rigidity at the initial stage of loading, thereby reducing vibration of the building and damage to the main structure. .

As an example of such an energy dissipation type vibration damping device, a 'vibration damping type brace device' has been proposed in Patent Document 1.

This is a cylindrical first cylinder 100 in which the clevis part 101 is formed on one side, the end plate 150 is fixed to the opening of the other side, and the first inner plate 120 is fixed therein, as shown in FIG. 1 . ), a first elastic concrete 110 that is inserted into the first cylinder 100 and exerts an elastic force in the longitudinal direction, one side of which passes through the first inner plate 120 to the first elastic concrete 110 The first spring support core 130 fixed by the A second cylinder 160 having a portion 161 formed therein and having a second inner plate 190 fixed therein, a second elastic concrete 180 inserted into the second cylinder 160 to exert an elastic force in the longitudinal direction. ), one side passes through the second inner plate 190 and the end plate 150 and is fixed by the second elastic concrete 180 and a second spring support core 200 having a diaphragm 210 fixed to the end thereof. , a second elastic spring 220 built between the diaphragm 210 and the end plate 150 and a third elastic spring 230 built between the end plate 150 and the second inner plate 190 . is comprised of

However, such a conventional vibration damping device is based on the first and second elastic concretes 110 and 180 and the first to third elastic springs 140, 220, 230 mainly made of polyurethane resin. Since it is a structure made of this structure, as time goes by, plastic deformation occurs, and the buffering and restoring force rapidly drop, so there is a problem in that energy dissipation ability is exhibited only under wind loads or small earthquakes.

In addition, due to the mechanical characteristics of the polyurethane resin, a difference in elasticity occurs depending on the temperature, and when a force greater than a certain level is applied, it cannot withstand the pressure and is damaged.

On the other hand, even in the case of a damper installed in a structure, when an external force action exceeds a certain level in the installed state, the damper buckles and cannot respond to displacement such as an earthquake.

The background art or prior art described herein is information possessed by the inventor or acquired in the process of deriving the present invention, and is only intended to help understand the technical meaning of the present invention, and prior to the filing of the present invention, the technology to which this invention belongs It should be noted that it does not mean a technique widely known in the field, and the reference numerals in the prior art are independent of the reference numerals in the present invention.

KR 10-1176374 B1 (2012.08.17) KR 10-2020-0038751 A (2020.04.14) KR 10-1017730 B1 (2011.02.18) KR 10-1171876 B1 (2012.08.01)

Seong-Hoon Cho, Experimental Study of Toggle Rotating Friction Damper for Seismic Reinforcement of Reinforced Concrete Buildings. Chonnam National University Graduate School Thesis (Department of Architectural Engineering, 2013.2)

Accordingly, the present inventor absorbs earthquake shocks by simultaneously using compressive strength and tensile strength when an earthquake occurs, with the idea of solving the technical limitations and problems of the existing vibration damping device technology while comprehensively considering the above-mentioned issues. As a result of continuous research to develop a damper for reinforcing the seismic performance of a new building structure that can increase the ductility of the structure to protect it safely and secure sufficient seismic performance at a low cost. Thus, the present invention was created.

Therefore, the technical problem and object to be solved by the present invention is to provide a damper for reinforcing the seismic performance of a building structure that can prevent buckling as well as increase the damping ability to absorb and dissipate energy.

Here, the technical problems and objects to be solved by the present invention are not limited to the technical problems and objects mentioned above, and other technical problems and objects not mentioned will be clearly understood by those skilled in the art from the following description.

Specific means according to an embodiment of the present invention for effectively achieving a specific technical purpose while embodying a new idea for solving the technical problem of the present invention as described above is a damper for reinforcing seismic performance of a building structure. In, Outer tube is hollow inside; a first connection part having one end connected to a frame installed on a wall or structure of a building with a pin joint while the out tube is fixed; an inner tube movably inserted into the outer tube from the opposite side to the first connection part and having a hollow inside; an inner end plate fixed to the lower end of the inner tube to cause contact interference with the lower end of the outer tube; a second connecting portion having one end connected to the frame by a pin joint, a second rod movably inserted into the inner tube, and a plurality of second wire grooves formed around the outer periphery of the second rod; an anchor head fixed to the upper end of the second rod; a plurality of first wires inserted between the outer tube and the inner tube and both ends fixed to the first connection part and the inner tube; and a plurality of second wires fixed between the inner end plate and the anchor head while being inserted into the second wire groove of the second connection part, wherein the external force acting on the first connection part is the first wire Provided is a damper for reinforcing seismic performance of a building structure that absorbs and dissipates energy by displacement and elastic deformation, and the external force acting on the second connection part absorbs and dissipates energy by displacement and elastic deformation of the second wire.

Accordingly, the present invention can improve the seismic safety of the structure by increasing the damping ability to absorb and dissipate energy.

According to the technical idea and embodiment (embodiment) of the present invention on which a unique solution is based to solve the above technical problems, the first and second connecting parts and the first and second wires are newly combined with a double structure. Therefore, when a tensile external force is applied, the first connection part and the second connection part move away from each other, and energy can be absorbed and dissipated by the displacement of the first and second wires generated at this time.

Therefore, it is possible to improve the seismic safety of the structure by increasing the shock or vibration damping ability caused by an earthquake.

In addition, there is an advantage in that the buckling deformation of the inner tube and the outer tube can be prevented through compression and tensile force according to the action of an external force.

Here, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a longitudinal cross-sectional view showing an example of a damper according to the prior art.
2 is a perspective view illustrating a damper for reinforcing seismic performance of a building structure according to an embodiment of the present invention.
3 is a longitudinal cross-sectional view illustrating a damper for reinforcing seismic performance of a building structure according to an embodiment of the present invention.
4 is a perspective view illustrating components other than the outer tube among components constituting the damper for reinforcing seismic performance of a building structure according to an embodiment of the present invention.
5 is a perspective view illustrating components other than an inner tube and an outer tube among components constituting a damper for reinforcing seismic performance of a building structure according to an embodiment of the present invention.
6 is an exploded perspective view of components excluding an outer tube and first and second wires among components constituting a damper for reinforcing seismic performance of a building structure according to an embodiment of the present invention.
7 is an applied state diagram showing that the buckling deformation of the outer tube can be prevented through compression and tensile force in an embodiment of the present invention.

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

Prior to this, the following terms are defined in consideration of the functions in the present invention, and it is specified that they should be interpreted as concepts consistent with the technical spirit of the present invention and meanings commonly or commonly recognized in the art.

In addition, if it is determined that a detailed description of a well-known function or configuration related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted.

The accompanying drawings show that parts are exaggerated or simplified for the sake of convenience and clarity of explanation and understanding of the configuration and operation of the technology, and it is revealed that each component does not exactly correspond to the actual size and shape.

In addition, in this specification, the term and/or is meant to include a combination of a plurality of related described items or any item among a plurality of related described items, and when a part includes a certain component, it is a particularly opposite description It means that other components may be further included, rather than excluding other components unless there is.

That is, it means that there is a feature, number, step, operation, component, part, or combination thereof described in this specification, and one or more other features or number, step operation component, part, or a combination thereof It is to be understood that this does not exclude the possibility of the existence or addition of those.

In addition, the meaning of the terms "unit" and "unit" means a module form that performs at least one function or a unit or role for processing a certain operation of a system, which is a combination of hardware or software or hardware and software. It may be implemented as a device or assembly capable of performing an independent operation or a means through such a method.

And terms such as upper, lower, upper, lower, or upper, lower, upper, lower, front and rear, left and right are used for convenience to distinguish relative positions of each component. For example, the upper side in the drawing may be named or referred to as the upper side and the lower side as the lower side, the longitudinal direction may be named or referred to as the front-back direction, and the width direction may be named or referred to as the left/right direction.

Also, terms such as first, second, etc. may be used to describe various components. That is, terms such as 1st, 2nd, etc. may be used only for the purpose of distinguishing one component from another component. For example, a first component may be referred to as a second component without departing from the scope of the present invention, and the second component may also be referred to as a first component.

As shown in FIGS. 2 to 7 , the damper 1 for reinforcing seismic performance of a building structure according to an embodiment of the present invention uses a toggle structure on the frame P installed on the outside or inner wall of the window of the building structure to diagonally It can be installed in a “Y” shape or “X” shape by connecting a single installation or several in the direction of each other, and the main components constituting this are the outer tube 10 , the inner tube 20 , and the first connection part 30 ), an inner end plate 40 , a second connection part 50 , an anchor head 60 , a first wire 80 and a second wire 90 .

The outer tube 10 has a cylindrical shape with a hollow inside.

And, the outer tube 10 stably guides the movement of the inner tube 30 so as to absorb the impact energy without twisting as a whole.

The inner tube 20 has an outer diameter slightly smaller than the inner diameter of the outer tube 10, and has a cylindrical shape with a hollow inside.

And the inner tube 20 is movably inserted into the inside of the outer tube 10, and on the outer periphery of the four sides, the first wire 80 is inserted between the outer tube 10 and the first wire 80 without contact interference. A first wire groove 21 is formed.

That is, the inner tube 20 is relatively movable in the longitudinal direction while being inserted into the outer tube 10 .

The first connection part 30 is fixed to the upper end of the out tube 10 .

That is, the outer end plate 31 in the shape of a disk at right angles to the axis line is fixed to the upper end of the out tube 10 by a fastening method such as welding or bolting.

And inside the center of the outer end plate 31, a cylindrical first rod 32 inserted into the inner tube 20 is integrally formed, and on the outside of the center, the toggle of the frame installed in the building structure and the The first clevis eye 33 for connecting by a pin joint is integrally formed.

In addition, the first socket 34 for coupling the upper end of the first wire 80 is formed in the four-sided edge portion of the outer end plate (31).

In particular, the first rod 32 of the first connection part 30 stably guides the movement of the inner tube 30 so as to absorb the impact energy without twisting as a whole.

The inner end plate 40 is fixed to the lower end of the inner tube 20 by a fastening method such as welding or bolting to cause contact interference with the lower end of the outer tube 10 .

That is, the inner end plate 40 is formed in the form of an outward flange at the lower end of the inner tube 20, and a through hole ( 41) is formed.

In addition, second sockets 42 for coupling the lower ends of the first wires 80 are arranged on the four-sided edges of the inner end plate 40 .

In addition, a plurality of third sockets 43 for coupling the lower ends of the second wires 90 are arranged between the through holes 41 and the second sockets 42 .

The second connection part 50 is disposed below the inner tube 20 .

That is, the second connecting portion 50 is formed with a cylindrical second rod 51 that is movably inserted into the inner tube 20 .

In addition, a second wire groove 52 for inserting the second wire 90 without contact interference is formed on the outer periphery of the second rod 51 in all four directions.

And at the lower end of the second rod 51, a second clevis eye 53 exposed downward through the through hole 41 of the inner end plate 40 in order to connect it with the toggle of the frame installed in the building structure and the pin joint. is formed integrally.

The anchor head 60 is fixed to the upper end of the second rod 51 in the inner tube 20 to fix the second wire 90 to the upper end of the second rod 51 of the second connection part 50 . .

And a plurality of fourth sockets 61 for coupling the upper end of the second wire 90 are formed on the edge of the anchor head 60 .

In the first wire 80, the first connection part 30 and the second connection part 50 behave integrally with respect to the compressive force, and relieve tension and stress with respect to the tensile force, and the first connection part 30 and the second connection part 30 The upper end of the first connecting portion 30 is inserted into the first wire groove 21 of the inner tube 20 so as to control the equilibrium state to prevent the two connecting portions 50 from spreading out of a certain range by maintaining the distance between them. It is fixed to the first socket 33 , and the lower end thereof is fixed to the second socket 42 of the inner end plate 40 .

In addition, first plugs 81 inserted and fixed to the first and second sockets 33 and 42 are integrally formed at both ends of the first wire 80 .

In addition, the inner periphery of the first and second sockets 33 and 42 and the outer periphery of the first plug 81 are formed as tapered faces corresponding to each other.

In the second wire 90, the inner end plate 40 and the anchor head 60 act integrally with respect to the compressive force, and the tension relief with respect to the tensile force and the stress relaxation, and the restoring force are improved, and the inner end plate 40 ) and the lower end of the inner end plate while being inserted into the second wire groove 52 of the second connecting portion 50 so as to maintain a gap between the second connecting portion 50 and the equilibrium state control to prevent the opening out of a certain range. It is fixed to the third socket 43 of 40, and the upper end is fixed to the fourth socket 61 of the anchor head 60.

A second plug 91 inserted and fixed to the third and fourth sockets 43 and 61 is integrally formed at both ends of the second wire 90 .

In addition, the inner periphery of the third and fourth sockets 43 and 61 and the outer periphery of the second plug 91 are formed as tapered faces corresponding to each other.

Here, the first and second wires 80 and 90 include high strength, such as a steel wire, a stranded wire, a PC steel twisted wire, a carbon fiber, an aramid fiber, a wire strand, etc. and may be made of a tough material.

The main action and operating principle of the damper for reinforcing the seismic performance of a building structure according to an embodiment of the present invention configured as described above will be described as follows.

First, when a compressive impact load is generated between the first connection part 30 and the second connection part 50, displacement and deformation of the first and second wires 80 and 90 occur, and the first with a restoring force proportional thereto After the negative damping occurs, the compressive load is transferred to the second rod 51 of the second connection part 50, which causes the second rod 51 to move in the inner tube 20 and secondarily absorb the impact energy. As it absorbs and dissipates, the compression shock is attenuated.

And when a tensile impact load occurs between the first connection part 30 and the second connection part 50, the first connection part 30 and the second connection part 50 move away from each other, and at this time, the first and second wires ( Displacement and elastic deformation of 80 and 90 occur, and energy is absorbed and dissipated with a restoring force proportional thereto, so that the tensile shock is attenuated.

After that, when the compressive force damping or tensile force damping action is finished and the state in which the compressive force and tensile force are applied is released, the deformed portion is restored to its original state through elasticity, and the first and second wires 80 and 90 are also restored to their original state. Again, it is ready for shock or vibration.

As such, the damper for reinforcing seismic performance of a building structure according to an embodiment of the present invention absorbs and dissipates energy through displacement and elastic deformation of the first and second wires 80 and 90 with respect to the initial tensile impact force. Since the displacement time is reduced while gradually reducing the impact force, the tensile force can be supported without a sudden impact.

Accordingly, when external forces such as compression and tension are greatly applied to the outer tube 10 and the inner tube 20, the buckling phenomenon can be prevented.

In addition, a partition wall dividing both sides is integrally formed inside the inner tube 20, and an elastic material is installed in the partition wall, so that a compressive force is applied to the second connection part 50 and a tensile force is provided to the first connection part 30 can make it happen

That is, when an external force such as a compressive force is applied to the second connecting part 50 and a tensile force is generated to the first connecting part 30 as shown in FIG. 7 , the first and second wires 80 and 90 through the tensile force of It is possible to prevent the buckling phenomenon occurring in the outer tube 10 and the inner tube 20 .

On the other hand, the present invention is not limited by the above-described embodiment and the accompanying drawings, and can be variously modified and applied in various ways not illustrated within the scope without departing from the technical spirit of the present invention, as well as each It is apparent to those of ordinary skill in the art to which the present invention pertains that it can be widely applied by changing the substitution of components and other equivalent embodiments.

Therefore, the contents related to the modification and application of the technical features of the present invention should be interpreted as being included within the technical spirit and scope of the present invention.

10: outer tube 20: inner tube
21: first wire groove 30: first connection part
31: out end plate (end plate) 32: first rod
33: first clevis eye (clevis-eye) 34: first socket
40: inner end plate 41: through hole
42: second socket 43: third socket
50: second connection 51: second rod
52: second wire groove 53: second clevis eye
60: anchor head 61: fourth socket
80: first wire 81: first plug
90: second wire 91: second plug

Claims (3)

In the damper for reinforcing seismic performance of a building structure,
Outer tube (10) having a hollow inside;
a first connection part 30 having one end connected to a frame installed on a wall or structure of a building with a pin joint in which the out tube 10 is fixed;
an inner tube 20 that is movably inserted into the interior of the outer tube 10 from the opposite side of the first connection portion 30 and has a hollow interior;
an inner end plate 40 fixed to the lower end of the inner tube 10 so as to cause contact interference with the lower end of the outer tube 10;
One end is connected to the frame by a pin joint, and a second rod 51 movably inserted into the inner tube 20 is formed, and a second rod 51 is formed around the outer periphery of the second rod 51 . a second connection part 50 in which a plurality of wire grooves 52 are formed;
An anchor head (60) fixed to the upper end of the second rod (51);
a plurality of first wires (80) inserted between the outer tube (10) and the inner tube (20), both ends of which are fixed to the first connection part (30) and the inner tube (20); and
a plurality of second wires 90 fixed between the inner end plate 40 and the anchor head 60 while being inserted into the second wire groove 52 of the second connection part 50;
includes,
The external force acting on the first connection part 30 absorbs and dissipates energy by the displacement and elastic deformation of the first wire 80 , and the external force acting on the second connection part 50 is the second wire 90 ), which absorbs and dissipates energy by displacement and elastic deformation of a building structure.
According to claim 1,
A plurality of first wire grooves 21 are formed on the outer periphery of the inner tube 20,
The first connection part 30 has an outer end plate 31 fixed to the upper end of the outer tube 10 , and is inserted into the inner tube 20 inside the center of the outer end plate 31 . The first rod 32 is integrally formed, the first clevis eye 33 is integrally formed outside the center, and a plurality of first sockets 34 are arranged at the edge,
The inner end plate 40 has a through hole 41 formed in the center, a plurality of second sockets 42 arranged at the edge, and a space between the through hole 41 and the second socket 42 . A plurality of third sockets 43 are arranged,
The second connection part 50 is integrally formed with a second clevis eye 53 exposed to the outside of the inner end plate 40 through the through hole 41 at the lower end of the second rod 51 . become,
The anchor head 60 is formed with a plurality of fourth sockets 61 arranged at the edge,
The first wire 80 is inserted into the first wire groove 21 of the inner tube 20 , the upper end is fixed to the first socket 33 of the first connection part 30 , and the lower end is the inner It is fixed to the second socket 42 of the end plate 40,
The second wire (90) is characterized in that the lower end is fixed to the third socket (43) of the inner end plate (40), and the upper end is fixed to the fourth socket (61) of the anchor head (60). , Damper for reinforcing seismic performance of building structures.
3. The method of claim 2,
A first plug 81 inserted and fixed to the first and second sockets 33 and 42 at both ends of the first wire 80 is integrally formed, and at both ends of the second wire 90, the The second plug 91 inserted and fixed to the third and fourth sockets 43 and 61 is integrally formed, and the inner circumferences of the first to fourth sockets 33, 42, 43 and 61 are formed integrally. And, the outer periphery of the first and second plugs (81, 91) is formed with a tapered face (taper face) corresponding to each other, a damper for reinforcing seismic performance of the building structure.

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