KR101951450B1 - Slim Type Steel Damper and Earthquake-proof Method using thereof - Google Patents

Abstract

The present invention relates to a slim steel damper capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs. The slim steel damper is mounted on the upper surface of the column and has a plurality of anchor bolt holes An upper attachment portion 110 provided with the upper attachment portion 110; A lower attachment part 120 made of a plate metal and mounted on a lower surface of the column and having a plurality of anchor bolt installation holes 55; A slit part 130 connecting the upper attachment part 110 and the lower attachment part 120 to each other; And a slit hole (140) in which a part of the slit part (130) is cut in the longitudinal direction of the column.

Description

TECHNICAL FIELD [0001] The present invention relates to a slim steel damper and an earthquake-

The present invention relates to a slim steel damper attached to a surface of a column, characterized in that the narrow slit portion has adequate strength to resist an external force and effectively damps 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

The object of the present invention, which has been created in order to solve the above-described problems, is to provide a structure for a building, which can be easily installed on a column surface of a building to be reinforced, thus eliminating the need for demolition of windows, finishing materials and masonry walls, And it is an object of the present invention to provide a slim steel damper in which no burden is placed on the foundation, and construction cost and construction period can be shortened.

In order to solve the above problems, the technical composition of the present invention is as follows.

The present invention relates to a slim steel damper capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs. The slim steel damper is mounted on the upper surface of the column and has a plurality of anchor bolt holes An upper attachment portion 110 provided with the upper attachment portion 110; A lower attachment part 120 made of a plate metal and mounted on a lower surface of the column and having a plurality of anchor bolt installation holes 55; A slit part 130 connecting the upper attachment part 110 and the lower attachment part 120 to each other; And a slit hole (140) in which a part of the slit part (130) is cut in the longitudinal direction of the column.

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.

Secondly, by providing a slim steel damper simply on the surface of the column to reinforce the ductility of the column member, it is possible to effectively prevent the column member from being broken and collapsed when an earthquake occurs.

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 construction method in which waste materials such as existing finishing materials, masonry wall, and asbestos are hardly generated by simply attaching to the exposed column surface.

1 illustrates an example of conventional slit steel dampers.
Figure 2 shows a specific embodiment of the present invention.
Fig. 3 shows the principle of earthquake energy damping of the slim steel damper shown in Fig.
Fig. 4 exemplarily shows a state in which the construction is completed using the slim dam type steel damper shown in Fig.
5 shows another embodiment of the present invention in which a top spacer 300 and a bottom spacer 400 are added.
FIG. 6 exemplarily shows a state in which the construction is completed using the slim dam type steel damper shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The present invention relates to a slim steel damper capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs, and is characterized in that a slim steel damper is directly attached to the surface (base surface) of the column without using a separate steel frame .

According to the embodiment shown in FIG. 2, the damper body 100 is directly mounted on the surface of the column .

The damper body 100 is a plate-like structure of a metal such as a steel material and includes an upper attachment portion 110, a lower attachment portion 120, a slit portion 130 and a slit hole 140. The upper attachment portion 110 The width of the lower attachment part 120 is formed to be relatively larger than the entire width of the slit part 130 including the slit hole 140. [

The upper attachment portion 110 is mounted on the upper surface of the column and the lower attachment portion 120 is mounted on the lower surface of the column. The slit portion 130 is connected to the upper attachment portion 110 and the lower attachment portion 120, And a slit hole 140 is formed in a part of the slit part 130 in the longitudinal direction of the column.

The upper attachment part 110 and the lower attachment part 120 are each provided with an anchor bolt installation hole 55 and are mounted on the surface of the column by the anchor bolts 33.

The damper body 100 mounted to connect the upper surface and the lower surface of the column also absorbs the external force due to the earthquake while damping the damper body 100. When the damper body 100 is slipped 130 can not maintain an appropriate strength, irregular buckling and deformation may occur in the entire area of the slit part 130, so that an external damping effect or an increase in ductility of a concrete column due to an earthquake can not be expected.

Accordingly, buckling, deformation, and breakage of the entire area of the slit 130 are prevented during the movement according to the external force so that the external force due to the earthquake is effectively damped while maintaining the shape thereof. The slit portion 130 of the damper body 100 may have a strength higher than a predetermined level so that breakage or deformation may occur at a boundary portion between the upper attachment portion 110 and the upper attachment portion 110 or between the slit portion 130 and the lower attachment portion 120 Should have.

That is, until the break or deformation occurs in the upper end portion or the lower end portion of the slit portion 130, the slit portion 130 repeats the behavior according to the external force while maintaining the proper strength and outer shape to gradually attenuate the seismic energy, As shown in FIG. 3, when the external force is applied, the upper end or the lower end of the slit 130 is broken or deformed, and the impact is absorbed once again, minimizing the damage or deformation of the column itself, .

FIG. 4 shows a state in which the slim damper shown in FIG. 2 is installed on the surface (base surface) of the column. Such a construction can be performed as follows.

(1) Step 1

It is the process of removing the paint or foreign matter on the base of the column that needs reinforcement by polishing.

(2) Step 2

The anchor holes are drilled in the base surface of the column in accordance with the pattern of the anchor bolt installation holes 55 provided in the upper attachment portion 110 and the lower attachment portion 120 of the damper body 100, It is the process of removing foreign matter.

(3) Step 3

A synthetic resin adhesive is applied to the bottom surface of the upper attachment portion 110, the bottom surface of the lower attachment portion 120, and the surface of the base surface of the column. Such a synthetic resin adhesive is not limited to a specific product, and an appropriate product can be freely selected among commercially available products.

In addition, a sufficient amount of synthetic resin adhesive is applied so as not to insufficient adhesion.

(4) Step 4

And the anchor bolts 33 are installed to pass through the anchor bolt installation holes 55 to fix the upper attachment portion 110 and the lower attachment portion 120 to the base surface of the column.

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 bolt 33 can be installed in a general process according to the selected anchor bolt 33, a detailed description thereof will be omitted.

(5) Step 5

The process of completing the construction after the finishing work may include a process of removing the excess synthetic resin adhesive, a process of arranging the vicinity of the work site, and a process of performing a finishing work necessary for the surface of the column.

FIG. 5 shows another specific embodiment of the present invention in which the upper spacer 300 and the lower spacer 400 are added.

The damper body 100 is a plate-like structure of a metal such as a steel material and includes an upper attachment part 110, a lower attachment part 120, a slit part 130 and a slit hole 140. The upper attachment part 110, The width of the lower attachment part 120 is formed to be relatively larger than the entire width of the slit part 130 including the slit hole 140. [

The upper attachment portion 110 is mounted on the upper surface of the column, and is provided with an expansion hole 44 for a plurality of anchor bolts.

The lower attachment portion 120 is mounted on the lower surface of the column, and is provided with an expansion hole 44 for a plurality of anchor bolts.

The slit part 130 serves to connect the upper attachment part 110 and the lower attachment part 120 and a slit hole 140 cut in the longitudinal direction of the column is provided in a part of the slit part 130 do.

The upper spacer 300 is coupled to the bottom surface of the upper attachment portion 110 and is provided with an anchor bolt installation hole 55 at a position corresponding to the extension hole 44 for the anchor bolt of the upper attachment portion 110.

The lower spacer 400 is coupled to the bottom surface of the lower attachment part 120 and is provided with an anchor bolt installation hole 55 at a position corresponding to the extension hole 44 for the anchor bolt of the lower attachment part 120.

When the upper spacer 300 and the lower spacer 400 are coupled with each other, the slit part 130 is spaced apart from the surface of the column so that the slit part 130 can be moved without interference from the column.

Each of the upper spacer 300 and the lower spacer 400 is provided with a coupling bolt passage hole 66 through which the coupling bolt 11 passes and a coupling bolt 11 penetrating through the coupling bolt passage hole 66, May be welded to be integrated with the upper spacer 300 or the lower spacer 400. Of course, if necessary, it may be combined so that only the coupling bolt 11 passes without welding.

Each of the upper and lower attachment portions 110 and 120 has a coupling bolt passage hole 66 through which the coupling bolt 11 passes in the same pattern as that of the upper spacer 300 and the lower spacer 400, do.

The upper spacer 300 and the upper attachment part 110 are coupled with each other by the nut 22 being fastened to the coupling bolt 11 having passed through the coupling bolt holes 66, The nut 22 can be more conveniently fastened to the upper spacer 300 and the lower spacer 400 when the coupling bolt 11 is welded to each of the upper spacer 300 and the lower spacer 400 in advance.

The anchor bolt 33 for the anchor bolt provided in each of the upper and lower attachment portions 110 and 120 has an inner diameter sufficiently large that it does not come in contact with the anchor bolt 33, And passes through the extension hole 44 for the anchor bolt without interference.

The anchor bolts 33 having passed through the anchor bolt expansion holes 44 without interference are inserted into the upper spacer 300 through the anchor bolt installation holes 55 provided in the upper spacer 300 and the lower spacer 400, And the lower spacer 400 to the column.

In other words, the upper spacer 300 and the lower spacer 400 are fixed to the column using the anchor bolts 33, and the upper and lower attachment portions 110 and 120 of the damper body 100 are coupled to each other, The upper spacer 300 and the lower spacer 400 are coupled to each other by using the bolts 11 and the nuts 22.

Therefore, when the damper body 100 is deformed or damaged (broken) due to an external force such as an earthquake, the nut 22 can be dismantled and the damper body 100 can be simply replaced.

FIG. 6 shows a state in which the slim damper shown in FIG. 5 is installed on a column. This construction is as follows.

(1) Step 1

It is the process of removing the paint or foreign matter on the base of the column that needs reinforcement by polishing.

(2) Step 2

Holes are drilled on the base surface of the column according to the patterns of the anchor bolt installation holes 55 provided in the upper spacer 300 and the lower spacer 400 to remove dust and foreign substances from the anchor holes.

(3) Step 3

A synthetic resin adhesive is applied to the bottom surface of the upper spacer 300, the bottom surface of the lower spacer 400, and the bottom surface of the column on which the upper spacer 300 and the lower spacer 400 are to be mounted.

Such a synthetic resin adhesive is not limited to a specific product, and an appropriate product can be freely selected among commercially available products.

In addition, a sufficient amount of synthetic resin adhesive is applied so as not to insufficient adhesion.

(4) Step 4

And an anchor bolt 33 is provided to pass through the anchor bolt installation hole 55 to fix the upper spacer 300 and the lower spacer 400 to the base surface of the column.

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 bolt 33 can be installed in a general process according to the selected anchor bolt 33, a detailed description thereof will be omitted.

(5) Step 5

The coupling bolts 11 protruding from the upper spacer 300 and the lower spacer 400 are inserted into the coupling bolt holes 66 provided in the upper and lower attachment portions 110 and 120, And the damper body 100 is mounted on the base surface of the column by fastening the nut 22.

When the damper body 100 is mounted with such a structure, if the damper body 100 is deformed or damaged (broken) due to an external force such as an earthquake, the nut 22 can be dismantled and the damper body 100 can be simply replaced .

(6) Step 6

The process of completing the construction after the finishing work may include a process of removing the excess synthetic resin adhesive, a process of arranging the vicinity of the work site, and a process of performing a finishing work necessary for the surface of the column.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Addition or deletion of a technique, and limitation of a numerical value are included in the protection scope of the present invention.

100: Damper body
110: upper attachment portion
120:
130:
140: Slit hole
300: upper spacer
400: Lower spacer
11: Coupling Bolt
22: Nut
33: Anchor bolt
44: Extension ball for anchor bolts
55: Anchor bolt mounting hole
66: Coupling Bolt Through Ball

Claims (6)

The present invention relates to a slim dam type steel damper capable of effectively damping a lateral force concentrated on a column of a building to be reinforced when an earthquake occurs,
An upper attachment portion 110 made of a plate-shaped metal and mounted on an upper surface of the column and having an expansion hole 44 for a plurality of anchor bolts; A lower attachment portion 120 made of a plate-shaped metal and mounted on a lower surface of the column and having an expansion hole 44 for a plurality of anchor bolts; A slit part 130 connecting the upper attachment part 110 and the lower attachment part 120 to each other; And a slit hole (140) in which a part of the slit part (130) is cut in the longitudinal direction of the column (100);
An upper spacer 300 coupled to a bottom surface of the upper attachment part 110 and having an anchor bolt installation hole 55 at a position corresponding to the extension hole 44 for the anchor bolt of the upper attachment part 110; And
A lower spacer 400 coupled to a bottom surface of the lower attachment part 120 and having an anchor bolt installation hole 55 at a position corresponding to the extension hole 44 for the anchor bolt of the lower attachment part 120;
The upper spacer 300 and the lower spacer 400 allow the slit part 130 to be spaced apart from the surface of the column so as to be able to behave without interference from the column,
The upper spacer 300 and the lower spacer 400 are welded to each other after the coupling bolts 11 penetrate through the upper spacer 300 and the lower spacer 400,
The upper and lower attachment portions 110 and 120 have coupling bolt holes 66 through which the coupling bolts 11 pass,
The coupling between the upper spacer 300 and the upper attachment part 110 and the coupling between the upper spacer 300 and the lower spacer 400 can be performed in a manner that the nut 22 is fastened to the coupling bolt 11 passing through the coupling bolt passage hole 66, And the lower attachment portion 120 are engaged with each other,
The anchor bolt expansion hole 44 provided in each of the upper attachment portion 110 and the lower attachment portion 120 has an inner diameter that is not in contact with the anchor bolt 33, Passes through the anchor bolt extension hole 44 without interference and passes through the anchor bolt installation hole 55 provided in each of the upper spacer 300 and the lower spacer 400, And the lower spacer (400) is fixed to the column. The method of claim 1,
Wherein the width of the upper attachment part (110) and the lower attachment part (120) is relatively larger than the entire width of the slit part (130) including the slit hole (140). A seismic isolation method using the slim damper according to claim 1 or 2,
A first step of removing a paint or a foreign substance on a base surface of a column that needs reinforcement by a polishing operation;
A second step of drilling an anchor hole on the base surface of the column in accordance with the pattern of the anchor bolt installation hole 55 provided in each of the upper spacer 300 and the lower spacer 400 and removing dust and foreign substances from the anchor hole, ;
A third step of applying a putty synthetic resin adhesive to the bottom surface of the upper spacer 300, the bottom surface of the lower spacer 400, and the surface of the base on which the upper spacer 300 and the lower spacer 400 are to be mounted;
A fourth step of fixing the upper spacer 300 and the lower spacer 400 to the base surface of the column by providing the anchor bolts 33 to pass through the anchor bolt installation holes 55;
The coupling bolts 11 protruding from the upper spacer 300 and the lower spacer 400 are inserted into the coupling bolt holes 66 provided in the upper and lower attachment portions 110 and 120, A fifth step of tightening the nut 22 to mount the damper body 100 on the base surface of the column; And
A sixth step of finishing the construction after finishing work;
And a seismic resistant method using a slim steel damper.
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