KR101781400B1 - Beam Connecting Type Steel Damper with Anti Buckling Plate and Earthquake-proof Method using thereof - Google Patents

Abstract

The present invention relates to a beam connection type steel damper having a buckling prevention reinforcing plate capable of effectively damping a lateral force concentrated on columns of a building to be reinforced when an earthquake occurs, comprising: a damper body (100) including an upper portion expansion plate (110), a lower portion expansion plate (120), and a narrow plate (130) that connects the upper portion expansion plate (110) and the lower portion expansion plate (120) and has a relatively narrower width than that of the upper portion expansion plate (110) or the lower portion expansion plate (120); an upper beam connection portion (300) connecting the upper portion expansion plate (110) and beams located on the upper portion of the building to be reinforced; a lower beam connection portion (400) connecting the lower portion extension plate (120) and beams located at a lower portion of the building to be reinforced; and a buckling preventing reinforcing plate (200) attached to the narrow plate (130) of the damper body (100) so as to overlap with the narrow plate (130) to prevent buckling and breaking of the narrow plate (130).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a steel beam damper having a buckling prevention reinforcing plate,

The present invention relates to a beam-connecting steel damper connecting upper and lower beams, and is equipped with a buckling-resistant reinforcing plate that reinforces the strength of a narrow and narrow portion so as to secure adequate strength to resist an external force, .

Since the Kobe earthquake in 1995 in Japan and the Sichuan earthquake in 2008 in Korea, the government has been actively promoting seismic retrofitting of important public facilities such as schools. Following the Gyeongju earthquake in September 2016, And the earthquake-proof reinforcement method or the earthquake-proof reinforcement method of the building structure such as the public facilities.

Among the technologies used in the seismic retrofitting of public facilities, shear wall reinforcement, steel frame reinforcement, and steel brace reinforcement are used in the seismic retrofitting technique. As the vibration reinforcement method, there are a window type slit steel damper, Steel dampers, toggle slit steel dampers, hydraulic or viscous dampers, and friction dampers are used. Most of these technologies are technologies in which a large steel frame is included as a basis.

In the case of a window-type slit steel damper and a wall-type slit steel damper which are widely used in recent years, a load-carrying fixing member made of a large steel structure is installed on the upper and lower sides for stable displacement of the slit steel damper. It is practically very difficult to completely integrate the structure with the existing structure by installing the structural member. In other words, in order to attenuate the earthquake energy of the existing slit steel damper (A) as shown in FIG. 1, it is necessary to satisfy the condition that the load transferring fixing member (B) (B) a load-carrying fixing member (b) made of a large-sized steel structure, which is not easy to construct in consideration of the use environment and surrounding conditions, Integration with the target structure to be reinforced is practically difficult.

In addition, there is a question as to whether the load-carrying fixing member (b) can efficiently transmit the seismic load to the slit steel damper (a) in the event of an earthquake.

In addition, the load-carrying fixing member (B) made of a large-sized steel structural member inconveniences the view and mining of the existing building, and the economic value of the building is lowered due to the change of the appearance of the building.

In addition, when the reinforcement techniques including the large steel frame are applied to the seismic reinforcement, the demolition water (waste) such as the window, the finishing material and the masonry wall of the reinforced building is frequently generated and the weight of the large- It causes a lot of burdens on the foundation, and civil complaints often occur due to noise and scattered dust, and in the case of business facilities, it causes many troubles in daily work.

Especially, in case of school earthquake reinforcement, hazardous waste such as asbestos is harmful to students' health and environment, and safety management due to the transportation and installation of large-sized steel members is also a burden.

[Prior Art List]

Patent No. 10-1000206

Patent No. 10-1112577

Patent No. 10-1651849

 It is an object of the present invention, which is created to solve the above-described problems, to provide a method of manufacturing a building, which can be easily installed between upper and lower beams of a building to be reinforced so that it is unnecessary to dismantle windows, finishing materials and masonry walls, And it is an object of the present invention to provide a beam-coupled steel damper in which the burden of the foundation is minimized and the construction cost and construction period can be shortened.

In order to achieve the above object, the present invention is a structure for connecting upper and lower beams arranged side by side, comprising: a beam-connecting steel damper having a buckling-resistant reinforcing plate capable of effectively damping a lateral force concentrated on a column of a building to be reinforced Which is connected to the upper expansion plate 110 and the lower expansion plate 120 and connects the upper expansion plate 110 and the lower expansion plate 120 to each other, A damper body 100 composed of the narrow narrow plate 130; An upper beam connection part 300 connecting the upper expansion plate 110 and the beam located on the upper part of the building to be reinforced; A lower beam connecting part 400 connecting the lower extension plate 120 and the beam located at a lower portion of the reinforced building; And a buckling preventing reinforcing plate 200 mounted to overlap with the narrow plate 130 of the damper body 100 to prevent buckling and breaking of the narrow plate 130. [

Technical effects of the configuration of the present invention are as follows.

First, it is possible to efficiently damp the lateral force concentrated on the column of the building to be reinforced when an earthquake occurs.

Second, by simply installing a beam-connecting steel damper between the upper and lower beams to reinforce the ductility of the column member, it is possible to effectively prevent destruction and collapse of the column member in the event of an earthquake.

Third, there is no need for a load-carrying fixing member made of a large-scale steel structure.

Fourth, it is possible to realize an eco-friendly method with almost no waste such as demolition of existing finishing materials, masonry wall, and asbestos by simply attaching to the space between upper and lower beams.

1 illustrates an example of conventional slit steel dampers.
Figure 2 shows a specific embodiment of the present invention.
Fig. 3 shows another specific embodiment of the present invention, in which a slit hole 140 is provided.
FIG. 4 shows a principle of earthquake energy attenuation of a beam-coupled steel damper provided with a buckling-resistant reinforcing plate shown in FIG.
5 shows a case in which a column attachment piece 510 is added as another concrete example of the present invention.
FIG. 6 shows a hinge structure applied as another specific embodiment of the present invention.
FIG. 7 shows another embodiment of the present invention in which two damper bodies 100 form a set.
8 shows a state in which the construction of the beam-coupled steel damper provided with the buckling-resistant reinforcing plate shown in Fig. 3 is completed.
FIG. 9 shows a state in which the construction of the beam-coupled steel damper with the buckling-resistant reinforcing plate shown in FIG. 5 is completed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

The present invention relates to a beam connection type steel damper having a buckling prevention reinforcing plate capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs, the beams being arranged in parallel.

The damper body 100 is a plate-like structure made of a metal such as steel and connects the upper expansion plate 110, the lower expansion plate 120 and the upper expansion plate 110 to the lower expansion plate 120 as shown in FIG. 2 And a narrow plate 130 having a relatively narrower width than the upper extension plate 110 or the lower extension plate 120.

The upper beam connection part 300 serves to connect the upper expansion plate 110 and the beam located at the upper part of the object to be reinforced and the lower beam connection part 400 serves to connect the lower extension plate 120 and the beam It also serves as a connection.

The buckling preventing reinforcing plate 200 is mounted so as to overlap with the narrow plate 130 of the damper body 100 to prevent buckling and breaking of the narrow plate 130.

3, the narrow plate 130 of the damper body 100 is provided with a slit hole 140 cut in the vertical direction. One or more such slit holes 140 may be provided.

The upper beam connecting part 300 shown in FIG. 2 or 3 is composed of an upper beam attaching part 310 and an upper bracket 320 and the lower beam connecting part 400 includes a lower beam attaching part 410 and a lower bracket 420).

The upper beam attaching piece 310 is welded along an end surface of the upper extending plate 110 so as to be orthogonal to the upper extending plate 110 and has a plurality of anchor bolt mounting holes 55 through which the anchor bolts 33 pass, (33).

The upper bracket 320 is welded to connect the upper expansion plate 110 and the upper beam attachment piece 310 to serve as a reinforcing member for reinforcing the strength of the upper extension plate 110 and the upper beam attachment piece 310, 110 and the upper beam attaching piece 310, as shown in FIG.

The lower brace attachment piece 410 is welded along the end surface of the lower extension plate 120 so as to be orthogonal to the lower extension plate 120 and has a plurality of anchor bolt installation holes 55 through which the anchor bolt 33 passes, (33).

The lower bracket 420 is welded to connect the lower extension plate 120 and the lower beam attachment piece 410 to serve as a reinforcement for reinforcing the strength of the lower extension plate 120 and the lower beam attachment piece 410, 120 and the lower beam attaching piece 410. As shown in FIG.

The buckling preventing reinforcing plate 200 is attached to overlap the narrow plate 130 of the damper body 100 to reinforce the strength of the narrow plate 130 and to prevent buckling and breakage of the narrow plate 130.

The buckling preventing reinforcing plate 200 may be bolted to the buckling preventing plate 200 as shown in FIG. 2 or 3, welded to the narrow plate 130, It may be attached only to one side.

When the column is horizontally displaced by an earthquake, the damper body 100 mounted to connect the upper and lower beams also absorbs the external force due to the earthquake while attenuating the damper body 100. Since the buckling prevention reinforcing plate 200 is not provided, If the narrow plate 130 of the narrow plate 130 does not maintain proper strength, irregular buckling and deformation may occur in the entire area of the narrow plate 130, so that an effect of attenuation of external force due to an earthquake or an increase in ductility of a concrete column can not be expected do.

4, the strength of the narrow plate 130 of the damper body 100 is reinforced when the buckling preventing reinforcing plate 200 is provided, and when the buckling preventing reinforcing plate 200 is buckled, When the external force greater than the preset strength is applied, the boundary between the narrow plate 130 and the upper extension plate 110 or the narrow plate 130 is prevented from being deformed or fractured, thereby effectively attenuating the external force due to the earthquake, And the lower extension plate 120, as shown in FIG. Therefore, the narrow plate 130 repeats the behavior according to the external force while maintaining the proper strength and external shape until the break or deformation occurs at the upper end or the lower end of the narrow plate 130, thereby gradually attenuating the seismic energy, When an external force acts, breakage or deformation occurs at the upper end or lower end of the narrow plate 130, so that the impact can be absorbed once again, minimizing the damage or deformation of the column itself, and delaying the time of damage or deformation as much as possible.

5 shows another embodiment of the present invention in which a column attachment piece 510 is added. The column attachment piece 510 is formed along one side surface of the upper extension plate 110 so as to be orthogonal to the upper extension plate 110 ) Are welded together.

The column attachment piece 510 is attached to the side of the column by the anchor bolt 33.

As shown in FIG. 5, the column attachment piece 510 may be coupled to the upper extension plate 110, but may not be separately shown in the attached drawings, but may be coupled to the lower extension plate 120.

6 shows a hinge structure applied to the upper beam connection part 300 and the lower beam connection part 400 according to another embodiment of the present invention.

The upper beam connecting portion 300 is composed of an upper beam attaching piece 310, a first hinge bracket 330, a second hinge bracket 340, and an upper hinge pin 350.

The upper bracket 310 is spaced along the upper surface of the upper expansion plate 110 so as to be perpendicular to the upper expansion plate 110 and the first hinge bracket 330 is arranged in a row along the upper bracket 310 .

The second hinge brackets 340 are coupled in a line along the upper end of the upper extension plate 110 and engage with the first hinge bracket 330.

The upper hinge pin 350 is coupled to the first hinge bracket 330 and the second hinge bracket 340 that are engaged with each other so that the upper beam attachment piece 310 is pivotably coupled along the upper end of the upper expansion plate 110 .

The lower brace attachment pieces 410 are arranged along the upper surface of the lower extension plate 120 so as to be orthogonal to the lower extension plate 120 and the third hinge brackets 430 are arranged in a row along the lower brace attachment pieces 410 .

The fourth hinge bracket 440 is coupled in a line along the lower end of the lower extension plate 120 and is engaged with the third hinge bracket 430.

The lower hinge pin 450 is coupled through the third hinge bracket 430 and the fourth hinge bracket 440 engaged with each other so that the lower beam attachment piece 410 is pivotably coupled along the lower end of the lower extension plate 120 .

6, the upper beam attaching piece 310 and the lower beam attaching piece 410 are respectively attached to the upper and lower beams of the building by the anchor bolts 33. [

FIG. 7 shows another embodiment of the present invention in which two damper bodies 100 form a set.

7, the upper beam connecting part 300 is composed of an upper beam attaching piece 310 having a cross-section of an anchor bolt through which the anchor bolt 33 passes, And the web of the upper beam attaching piece 310 is coupled to the upper extending plate 110 so as to overlap with each other.

The anchor bolt installation hole 55 through which the anchor bolt 33 passes is formed in the flange of the lower beam attachment piece 410. The anchor bolt installation hole 55, And is attached to the lower beam by an anchor bolt 33. The web of the lower beam attaching piece 410 is coupled to overlap the lower expanding plate 120. [

In addition, two damper bodies 100 are joined to the front and rear surfaces of the upper beam attachment piece 310 and the lower beam attachment piece 410 as a pair.

FIG. 8 shows a state in which the construction of the beam-coupled steel damper with the buckling-resistant reinforcing plate shown in FIG. 3 is completed. The construction is carried out as follows.

(1) Step 1

It is the process of removing the paint or foreign matter on the surface of the beam of the building which needs seismic reinforcement by grinding.

(2) Step 2

The anchor bolt installation hole 55 formed on each of the upper beam attachment part 310 of the upper beam connection part 300 and the lower beam attachment part 410 of the lower beam connection part 400 Anchor holes are drilled in the surface and dust and foreign matter inside the anchor holes are removed.

(3) Step 3

The damper body 100 in which the upper beam connecting portion 300 and the lower beam connecting portion 400 are integrally coupled is installed between the upper and lower beams using the anchor bolts 33 and then the upper beam attaching piece 310, And sealing the periphery of the flap 410 and the anchor bolt 33.

The types of the anchor bolts 33 are freely selectable among the commercially available products and are not limited to products having a specific structure. In addition, since the anchor bolts 33 can be installed in a general process according to the selected anchor bolts 33, a detailed description thereof will be omitted.

In addition, the sealing operation is performed using a commercially available synthetic resin, and a sufficient amount is used so that a gap is not generated.

(4) Step 4

In the third step, the synthetic resin adhesive or grout mortar is injected into the sealed space to fill the space, and the injection port and the air outlet are spaced apart from each other so that no void is generated in the inner space. Such a synthetic resin adhesive is not limited to a specific product, and an appropriate product can be freely selected among commercially available products.

(5) Step 5

The process of completing construction after finishing work may include the process of removing extra synthetic resin adhesive or grout mortar, arranging the work area around, and finishing necessary work on the surface of the column.

9 shows a state in which the construction of the beam-coupled steel damper provided with the buckling-resistant reinforcing plate shown in Fig. 5 is completed

(1) Step 1

It is the process of removing the paint or foreign matter on the base of the beams and pillars of the building that require seismic reinforcement by grinding.

(2) Step 2

The pattern of the upper beam attachment part 310 of the upper beam connection part 300, the lower beam attachment part 410 of the lower beam connection part 400 and the anchor bolt installation hole 55 formed in each of the column attachment parts 510 It is a process of drilling anchor holes on the base of the beams and pillars and removing dust and foreign substances inside the holes.

Unlike the case of FIG. 8, the anchor hole is also drilled on the base surface of the column.

(3) Step 3

The damper body 100 in which the upper beam connecting portion 300 and the lower beam connecting portion 400 are integrally coupled is installed between the upper and lower beams using the anchor bolts 33 and then the upper beam attaching piece 310, And sealing the periphery of the piece 410, the column attachment piece 510, and the anchor bolt 33. The types of the anchor bolts 33 are freely selectable among the commercially available products and are not limited to products having a specific structure. In addition, since the anchor bolts 33 can be installed in a general process according to the selected anchor bolts 33, a detailed description thereof will be omitted.

(4) Step 4

A synthetic resin adhesive or grout mortar is injected into the inner space sealed in the third step to fill the inner space with the injection port and the air outlet so as not to generate a gap in the inner space. Such a synthetic resin adhesive is not limited to a specific product, and an appropriate product can be freely selected among commercially available products.

(5) Step 5

The process of completing construction after finishing work may include the process of removing extra synthetic resin adhesive or grout mortar, arranging the work area around, and finishing necessary work on the surface of the column.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, , Addition or deletion of known technology, and simple numerical limitation are also included in the protection scope of the present invention.

100: Damper body
110: Upper extension plate
120: Lower extension plate
130: narrow plate
140: Slit hole
200: anti-buckling reinforcing plate
300: upper beam connection
310: upper beam attachment piece
320: upper bracket
330: First hinge bracket
340: second hinge bracket
350: upper hinge pin
400: Lower beam connection part
410: Lower beam attachment
420: lower bracket
430: Third hinge bracket
440: Fourth hinge bracket
450, a lower hinge pin
510: Column attachment piece
33: Anchor bolt
55: Anchor bolt mounting hole

Claims (8)

The present invention relates to a connection-type steel damper having a buckling-resistant reinforcing plate capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs,
And a lower extension plate 120 and a narrower plate 120 that connects the upper extension plate 110 and the lower extension plate 120 and is relatively narrower than the upper extension plate 110 or the lower extension plate 120, (130);
An upper beam connection part 300 connecting the upper expansion plate 110 and the beam located on the upper part of the building to be reinforced;
A lower beam connecting part 400 connecting the lower extension plate 120 and the beam located at a lower portion of the reinforced building; And
A buckling prevention reinforcing plate 200 attached to overlap the narrow plate 130 of the damper body 100 to prevent buckling and breaking of the narrow plate 130;
And,
In the narrow plate 130 of the damper body 100,
A slit hole 140 cut in a vertical direction;
Respectively,
The upper beam connection part 300 includes:
An upper beam attaching piece (310) welded along an end surface of the upper extension plate (110) so as to be perpendicular to the upper extension plate (110); And
An upper bracket 320 welded to connect the upper extension plate 110 and the upper beam attachment piece 310;
Lt; / RTI >
The lower beam connection part (400)
A lower beam attachment piece 410 welded along the cross section of the lower extension plate 120 so as to be orthogonal to the lower extension plate 120; And
A lower bracket 420 welded to connect the lower extension plate 120 and the lower beam attachment piece 410;
Lt; / RTI >
Wherein each of the upper beam attaching piece (310) and the lower beam attaching piece (410) is mounted to each of the upper and lower beams of the building by an anchor bolt (33). The present invention relates to a connection-type steel damper having a buckling-resistant reinforcing plate capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs,
And a lower extension plate 120 and a narrower plate 120 that connects the upper extension plate 110 and the lower extension plate 120 and is relatively narrower than the upper extension plate 110 or the lower extension plate 120, (130);
An upper beam connection part 300 connecting the upper expansion plate 110 and the beam located on the upper part of the building to be reinforced;
A lower beam connecting part 400 connecting the lower extension plate 120 and the beam located at a lower portion of the reinforced building; And
A buckling prevention reinforcing plate 200 attached to overlap the narrow plate 130 of the damper body 100 to prevent buckling and breaking of the narrow plate 130;
And,
In the narrow plate 130 of the damper body 100,
A slit hole 140 cut in a vertical direction;
Respectively,
The upper beam connection part 300 includes:
An upper beam attaching piece 310 arranged to be spaced along the upper end surface of the upper extension plate 110 so as to be perpendicular to the upper extension plate 110;
A first hinge bracket 330 coupled in a line along the upper beam attachment piece 310;
A second hinge bracket 340 coupled in a line along the upper end of the upper extension plate 110 to engage with the first hinge bracket 330; And
An upper hinge pin 350 coupled to penetrate the first hinge bracket 330 and the second hinge bracket 340;
And,
The lower beam connection part (400)
A lower beam attaching piece (410) arranged to be spaced apart along a lower end surface of the lower extension plate (120) so as to be orthogonal to the lower extension plate (120);
A third hinge bracket 430 coupled in a line along the lower beam attachment piece 410;
A fourth hinge bracket 440 coupled in a row along the lower end of the lower extension plate 120 to engage with the third hinge bracket 430; And
A lower hinge pin 450 coupled to pass through the third hinge bracket 430 and the fourth hinge bracket 440;
And,
Wherein the upper upper beam attaching piece (310) and the lower beam attaching piece (410) are mounted on the upper and lower beams of the building by anchor bolts (33), respectively. The present invention relates to a connection-type steel damper having a buckling-resistant reinforcing plate capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs,
And a lower extension plate 120 and a narrower plate 120 that connects the upper extension plate 110 and the lower extension plate 120 and is relatively narrower than the upper extension plate 110 or the lower extension plate 120, (130);
An upper beam connection part 300 connecting the upper expansion plate 110 and the beam located on the upper part of the building to be reinforced;
A lower beam connecting part 400 connecting the lower extension plate 120 and the beam located at a lower portion of the reinforced building; And
A buckling prevention reinforcing plate 200 attached to overlap the narrow plate 130 of the damper body 100 to prevent buckling and breaking of the narrow plate 130;
And,
In the narrow plate 130 of the damper body 100,
A slit hole 140 cut in a vertical direction;
Respectively,
The upper beam connection part 300 includes:
An upper beam attachment piece 310 having a "?" Shaped cross-section, a flange attached to the upper beam and a web coupled to overlap the upper extension plate 110;
Lt; / RTI >
The lower beam connection part (400)
A lower beam attachment piece 410 having a "?" -Shaped cross section, a flange attached to the lower beam, and a web coupled to overlap the lower extension plate 120;
Lt; / RTI >
Two damper bodies 100 are joined together at the front and rear surfaces of the upper upper attaching piece 310 and the lower beam attaching piece 410,
Wherein the upper upper beam attaching piece (310) and the lower beam attaching piece (410) are mounted on the upper and lower beams of the building by anchor bolts (33), respectively. The method of claim 1,
A column attachment piece 510 welded along one side surface section of the upper extension plate 110 or the lower extension plate 120 so as to be orthogonal to the upper extension plate 110 or the lower extension plate 120;
Lt; / RTI >
Wherein the column attachment piece (510) is mounted on the side of the column by an anchor bolt (33). A seismic isolation method using a beam-connecting steel damper provided with a buckling-resistant reinforcing plate according to any one of claims 1 to 3,
A first step of removing the paint or foreign matter on the base surface of the beam by a grinding operation;
Anchor bolt installation hole 55 formed on each of the upper beam attachment part 310 of the upper beam connection part 300 and the lower beam attachment part 410 of the lower beam connection part 400, A second step of drilling dust and foreign substances in the anchor holes;
The damper body 100 in which the upper beam connecting portion 300 and the lower beam connecting portion 400 are integrally coupled is installed between the upper and lower beams using the anchor bolts 33 and then the upper beam attaching piece 310, A third step of sealing around the piece 410 and the anchor bolt 33;
A fourth step of injecting a synthetic resin adhesive or grout-type mortar into the inner space sealed in the third step and filling the inner space; And
A fifth step of completing construction after finishing work;
Wherein the buckling-resistant reinforcing plate is provided with a buckling-resistant steel damper. The present invention relates to a seismic proofing method using a steel plate damper having a buckling prevention reinforcing plate according to the fourth aspect of the present invention,
A first step of removing a paint or a foreign substance on the base surface of the beam and the column by a polishing operation;
The pattern of the upper beam attachment part 310 of the upper beam connection part 300, the lower beam attachment part 410 of the lower beam connection part 400 and the anchor bolt installation hole 55 formed in each of the column attachment parts 510 A second step of drilling anchor holes in the base of the beams and the columns and removing dust and foreign substances in the holes of the anchors;
The damper body 100 in which the upper beam connecting portion 300 and the lower beam connecting portion 400 are integrally coupled is installed between the upper and lower beams using the anchor bolts 33 and then the upper beam attaching piece 310, A third step of sealing around the piece 410, the column attachment piece 510 and the anchor bolt 33;
A fourth step of injecting a synthetic resin adhesive or grout-type mortar into the inner space sealed in the third step and filling the inner space; And
A fifth step of completing construction after finishing work;
Wherein the buckling-resistant reinforcing plate is provided with a buckling-resistant steel damper.
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