KR20210103837A - Resistance to earthquake reinforcement method for DIY reinforcement of multi-household house piloti column - Google Patents

Abstract

The present invention relates to a seismic reinforcement construction method for DIY reinforcement of a multi-household piloti column, capable of enabling a building owner to conveniently perform seismic reinforcement for a column by him or herself using a steel plate for column reinforcement and a corner angle; improving construction quality by leading a torque share bolt to couple seismic components with a constant axial force; and facilitating the steel reinforcement of a base part and a head part. According to a proper embodiment of the present invention, the seismic reinforcement construction method for DIY reinforcement of a multi-household piloti column, which is a method for reinforcing a multi-household piloti column, includes the following steps of: (a) preparing a steel plate for column reinforcement having side joint wings bent at both ends by the thickness of the steel plate so as to have a bond filling space part between columns, and having a plurality of torque share bolts integrated with the side joint wings at regular intervals, and then, applying epoxy resin or expanded mortar to the surface of the column and attaching the steel plate to four sides of the column; and (b) preparing a corner angle having a circular bolt hole provided at one end, a slot type bolt hole provided at the other end and installed in each of four corners of the column, and inserting the corner angle into the torque share bolts through the circular bolt hole and the slot type bolt hole to overlap the same with the side joint wings of the steel plate, and then, couple nuts with the torque share bolts such that the corner angle is coupled with a constant coupling axial force.

Description

{Resistance to earthquake reinforcement method for DIY reinforcement of multi-household house piloti column}

The present invention relates to a method for earthquake-resistant reinforcement of a multi-family piloti column, and in particular, a building owner can easily directly construct an earthquake-resistant reinforcement of a column by using a steel plate for column reinforcement and a corner angle, and a torque share bolt is used to fasten earthquake-resistant parts with a constant axial force. It relates to a seismic reinforcement method for DIY reinforcement of a multi-family piloti column that can improve the construction quality by making the

In general, for the repair and reinforcement of concrete structures, the surface treatment method, the filling injection method, the prestress method, and the reinforcement method of composite materials are known. For example, in the conventional technique applied to improve the seismic reinforcing performance of the pillar among the reinforcement construction methods, a method of installing a plurality of fastening members in the shape of a band that presses the lower end of the column so as to be in direct contact with the lower end surface of the existing column have. However, in the case of such a conventional reinforcement technique, although the fastening member directly presses the lower end surface of the existing column, when a vibration load due to earthquake, etc. acts, the fragments of the lower end of the ruptured existing column fall out between the plurality of fastening and fastening members. As an earthquake-resistant reinforcement structure, it has a disadvantage that its performance is not satisfactory.

Another conventional seismic reinforcing structure is to install a steel plate member to surround the lower end of the column in a state in which cement or mortar is interposed thinly. At this time, a welding portion is formed so as to fix both ends of the steel plate member in a state in which both ends of the steel plate member are pulled and the column is pressed. In addition, anchor members such as lock bolts and bolt members for securely fixing the steel plate member to the column are installed on the column through the steel plate member.

However, in this conventional earthquake-resistant reinforcing structure, since the anchor member is embedded in the column, there is a problem in that it causes physical damage to the existing column, thereby reducing the strength of the column. In addition, since it is necessary to weld both ends of the steel plate member, it is difficult to complete the work quickly and professional welding technology is required.

The technology that is the background of the present invention is Korean Patent Laid-Open Publication No. 10-2020-0008685, which proposes a 'concrete column seismic reinforcement method'. This has the steps of installing a corner support part of the length of the reinforcement section in the corner of the concrete column, installing a steel material in the through hole of the corner support part, and confirming the target fastening torque value after the first fastening of the fastening member. The background art is to prevent the concentration of external forces on the corners of the concrete pillars, but cannot prevent seismic destruction or damage occurring in the central portion of the pillars. In addition, when the fastening member is fastened, it cannot have a uniform fastening axial force, so specialized construction is required.

Korean Patent Publication No. 10-2020-0008685

According to the present invention, the building owner can easily directly construct the earthquake-resistant reinforcement of the column by using the steel plate for column reinforcement and the corner angle, and the torque share bolt can achieve the fastening between the earthquake-resistant parts with a constant axial force, thereby increasing the construction quality, and the plinth The purpose of this is to provide a seismic reinforcement method for DIY reinforcement of multi-family piloti columns that can be easily implemented to reinforce the steel material of the head and head.

The seismic reinforcement method for DIY reinforcement of a multi-family piloti column according to an appropriate embodiment of the present invention is a method for reinforcing a multi-family piloti column, (a) bending as much as the thickness of the steel plate at both ends to have a bond filling space between the column and the column A steel plate for column reinforcement in which a plurality of torque share bolts are integrally joined at regular intervals to the side joint blades, the steel plate for column reinforcement is applied to the surface of the column with an epoxy resin or expansion mortar Laying on and attaching steel plates for column reinforcement to each of the four sides of the column; (b) It has a circular bolt hole at one end and a slotted bolt hole at the other end, has corner angles installed at each of the four corners of the column, and inserts the corner angles into the torque share bolt using a round bolt hole and a slot type bolt hole. After overlapping with the side joint blades of the steel plate for column reinforcement, fastening the nut to the torque share bolt so that the corner angle is fastened with a constant fastening axial force; characterized in that it includes.

In addition, after installing the corner angle, the column plinth is installed on the lower part of the column, but the construction of the column plinth is, the plinth web, the plinth upper flange bent outward of the column from the top of the plinth web, the column at the bottom of the plinth web A plinth reinforcing bar consisting of a plinth lower flange bent to the outside of the plinth upper flange, a plinth upper and lower flange, and a plurality of plinth stiffeners joined to the plinth web, and the plinth reinforcing bar at the lower part of the column Arranged along the perimeter in a one-to-one correspondence with the reinforcing steel plate, and connecting the neighboring reinforcing bars for plinths by bolting through the plinth upper connecting bar, plinth lower connecting bar, and plinth middle connecting bar; It characterized in that it comprises the step of fixing the reinforcing bar for the plinth to the slab on the bottom side of the column as an anchor.

In addition, after the installation of the corner angle, the column head is constructed on the upper part of the column, but the construction of the column head part is the main web, the main upper flange bent outward of the column from the top of the main web, and the column at the bottom of the main web It is provided with a main reinforcement bar consisting of a main head lower flange bent to the outside of the main head upper flange to a greater width than the main head upper flange, and a plurality of main head stiffeners connected to the main head web, and Arranged along the circumference in a one-to-one correspondence with the steel plate for reinforcing, and connecting the neighboring head reinforcement bars through bolting through the head upper connecting rod, the main head lower connecting rod, and the main head intermediate connecting rod; It characterized in that it comprises the step of fixing and installing the reinforcing bar for the head to the ceiling-side slab of the column as an anchor.

In addition, the plinth upper connecting rod and the plinth lower connecting rod have an L-shaped cross-sectional structure and are characterized in that the plinth harness plates formed at each end are bolted to the plinth stiffeners of the plinth reinforcing bars.

In addition, the head upper connecting rod and the main head lower connecting rod have an L-shaped cross-sectional structure and are characterized in that the head harness plates formed at each end are bolted to the head stiffeners of the head reinforcing bars.

In addition, after arranging a plinth fastener between the steel plate for column reinforcement on the back side of the reinforcing bar for the plinth, bolting of the plinth upper connecting bar, the plinth lower connecting bar, and the plinth intermediate connecting bar is performed.

In addition, it is characterized in that after arranging the head fastener between the steel plate for column reinforcement on the back side of the head reinforcing bar, the bolt fastening of the head upper connecting rod, the main head lower connecting member, and the main head intermediate connecting member is made.

According to the seismic reinforcement method for DIY reinforcement of the multi-family piloti column of the present invention, the building owner can conveniently directly construct the earthquake-resistant reinforcement of the column by using the steel plate for column reinforcement and the corner angle. In addition, the connection between the reinforcing steel plate and all seismic parts including the corner angle is made through a torque share bolt that can obtain a constant axial force, thereby improving the construction quality. In addition, it is possible to easily implement the seismic reinforcement of the plinth and the prism by using the reinforcing bar for the plinth and the reinforcing bar for the plinth, respectively.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in the accompanying drawings It should not be construed as being limited.
1A and 1B are a perspective view and a plan view of a steel plate for column reinforcement installed on a multi-family piloti column according to an embodiment of the present invention.
Figures 2a and 2b is a state view of the construction of the corner angle after the installation of the steel plate for column reinforcement shown in Figure 1a.
3A and 3B are a perspective view and a front view illustrating a state in which a plinth and a main head are reinforced after the mooring angle shown in FIG. 2A is installed;
Figures 4a and 4b is a seismic reinforcing assembly state of the plinth and main part applied to the present invention, respectively.
Figures 5a and 5b are respectively seismic reinforcement and disassembled state of the plinth part and the main head part applied to the present invention.
6 is a cross-sectional view taken along line AA of FIG. 3B.
Figures 7a and 7b are respectively installed state diagrams of the plinth fasteners and the main fasteners applied to the present invention.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

The column to be reinforced in the present invention is not limited to the RC column or the column having such a structure.

Installation of steel plate 14 for column reinforcement

First, a steel plate 14 for column reinforcement is provided as shown in FIG. 1 . The steel plate for pillar reinforcement 14 has side bonding wings 141 bent as much as the thickness of the steel sheet at both ends to have a bond filling space 12 between the pillars 10, and is fixed to the side bonding blades 141. It has a structure in which a plurality of torque share bolts 142 are integrally joined at intervals. The steel plate 14 for column reinforcement has a thickness of 2 to 4 mm.

Such a steel plate 14 for column reinforcement is applied to the surface of the column 10 with an epoxy resin 16 or expanded mortar, and is attached to each of the four sides of the column 10 . Here, the epoxy resin 16 or the expansion mortar is integrally bonding the steel plate 14 for column reinforcement to the column 10 .

Installation of the corner angle (18)

Next, as shown in FIG. 2 , it has a circular bolt hole 181 at one end and a slot-type bolt hole 182 at the other end and has a corner angle 18 installed at four corners of the pillar 10 . The corner angle 18 preferably has the same thickness as the steel plate 14 for column reinforcement. The corner angle 18 has an L-shaped cross-section.

After that, the corner angle 18 is fitted into the torque share bolt 142 using the circular bolt hole 181 and the slot-type bolt hole 182 so that it overlaps with the side joint wing 141 of the steel plate 14 for column reinforcement. install

Thereafter, the nut 144 is fastened to the torque share bolt 142 as shown in FIG. 6 so that the corner angle 18 is fastened with a constant fastening axial force. As such, the present invention uses the torque share bolt 142 to install the corner angle 18 with a constant fastening force even if you are not a professional contractor, so that the construction quality is improved. Here, a nut 144 may be installed in the lower side plinth part and the upper side main head section of the pillar 10 . Of course, the nut 144 may be finally fastened to the torque share bolt 142 after the seismic reinforcement of the plinth and the head of the plinth is performed.

Construction of pillar plinth

Then, after the installation of the corner angle 18 as shown in Figure 3, the column plinth is constructed in the lower part of the column 10.

The construction of the column plinth is performed on the plinth web 201, the plinth upper flange 202 bent outward of the column 10 from the upper end of the plinth web 201, and the lower end of the plinth web 201, as shown in FIGS. 4a and 5a. A plurality of plinth stiffeners ( 204) using the reinforcing bar 20 for the plinth.

First, the reinforcing bar 20 for the plinth is arranged along the circumference in a one-to-one correspondence with the steel plate 14 for reinforcing the column at the lower part of the column 10, and the adjacent reinforcing bar 20 for the plinth is connected to the plinth upper connecting bar 21 and It is connected by bolting through the plinth lower connecting rod 22 and the plinth intermediate connecting rod 23.

Thereafter, the reinforcing bar 20 for the plinth is fixed to the bottom side slab 11a of the column 10 with the anchor 24 as shown in FIG. 3b , and the construction of the column plinth is completed.

Here, the plinth upper connecting rod 21 and the plinth lower connecting rod 22 have an L-shaped cross-sectional structure, and the plinth harness plates 211 and 221 formed at each end are bolted to the plinth stiffener 204 of the plinth reinforcing bar 20 for the plinth. The connection between the reinforcing bars 20 and 20 may be strengthened.

Construction of the column head

Then, as shown in FIG. 3, the column head is constructed on the upper part of the column 10.

The construction of the pillar head uses the reinforcing bar 30 for the head. As shown in Figures 4b and 5b, the head reinforcing bar 30 is the head web 301, the head top flange 303 bent outward of the post 10 at the top of the head web 301, the head web 301 of A plurality of main stiffeners joined to the main head lower flange 303, the main upper and lower flanges 303 and 303 and the main head web 301 bent to the outside of the column 10 from the bottom to a greater width than the main head upper flange 303 (304).

Such a head reinforcing bar 30 is arranged along the circumference in a one-to-one correspondence with the steel plate 14 for pillar reinforcement at the lower portion of the pillar 10, and the adjacent head reinforcing bar 30 is connected to the head head upper connecting rod 31 and the head head It is connected by bolting through the lower connecting rod 32 and the main head intermediate connecting rod 33 .

Thereafter, as shown in FIG. 3b , the head reinforcing bar 30 is fixed to the ceiling side slab 11b of the pillar 10 with an anchor 34 to complete the construction of the pillar head.

Here, the head upper connecting rod 31 and the main head lower connecting rod 32 have an L-shaped cross-sectional structure, and the head harness plates 311 and 321 formed at each end are bolted to the head stiffener 304 of the head head reinforcing bar 30 for head use. The connection between the reinforcing bars 30 and 30 may be strengthened.

On the other hand, after disposing a plurality of plinth fasteners 51 between the steel plate 14 for column reinforcement on the back surface of the reinforcing bar 20 for the plinth as shown in FIG. 7A, the plinth upper connecting bar 21 and the plinth lower connecting bar ( 22) and the plinth intermediate connecting rod 23 may be bolted to each other. Therefore, the connection between the reinforcing bars 20 and 20 for the plinth can be more strongly bound by the fastener 51 .

In addition, after disposing the head fastener 52 between the steel plate 14 for column reinforcement on the back surface of the head reinforcement 30 as shown in FIG. And bolt fastening of the main head intermediate connecting rod 33 may be made. Therefore, the connection between the reinforcing bars 30 and 20 for the head can be more strongly bound by the head fastener 52 .

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art can make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by such variations and modifications, but only by the claims appended hereto.

14: steel plate for column reinforcement
142: torque share bolt
18: corner angle
20: reinforcing bar for plinth
21: plinth upper connecting rod
22: plinth lower connecting rod
23: middle plinth connecting rod
30: reinforcement bar for the head
31: head upper connecting rod
32: head lower connecting rod
33: main middle connecting rod
51: plinth fasteners
52: main fastener

Claims (7)

In the method for reinforcing a multi-family piloti column,
(a) has side bonding wings 141 bent as much as the thickness of the steel plate at both ends to have a bond filling space 12 between the pillars 10, and a plurality of side bonding wings 141 at regular intervals A steel plate for column reinforcement 14 to which the torque share bolt 142 is integrally joined is provided, and the steel plate 14 for column reinforcement is applied to the surface of the column 10 by applying an epoxy resin 16 or expansion mortar. The step of attaching the steel plate 14 for column reinforcement to each of the four sides of the column 10;
(b) having a circular bolt hole 181 at one end and a slot-type bolt hole 182 at the other end and having a corner angle 18 installed at four corners of the column 10, and the corner angle 18 After fitting the torque share bolt 142 using the circular bolt hole 181 and the slot type bolt hole 182 to overlap the side joint wing 141 of the steel plate 14 for column reinforcement, the torque share bolt ( 142) by fastening the nut 144 to the corner angle 18 with a constant fastening axial force. The method of claim 1,
After the installation of the corner angle 18, the column plinth is constructed on the lower part of the column 10,
The construction of the pillar plinth is
The plinth web 201, the plinth upper flange 202 bent outward of the column 10 at the upper end of the plinth web 201, the plinth upper flange 202 to the outside of the column 10 at the lower end of the plinth web 201 ), the plinth lower flange 203, the plinth upper and lower flanges 202 and 203, and a plurality of plinth stiffeners 204 joined to the plinth web 201, which are bent to a width greater than the plinth reinforcement 20, and ,
The plinth reinforcing bar 20 is arranged along the circumference in a one-to-one correspondence with the column reinforcing steel plate 14 at the lower part of the column 10, and the adjacent plinth reinforcing bar 20 is connected to the plinth upper connecting bar 21 and the lower plinth. connected by bolting through the connecting rod 22 and the plinth intermediate connecting rod 23;
A seismic reinforcement method for DIY reinforcement of multi-family piloti pillars, comprising the step of fixing and installing the reinforcing bar 20 for the plinth to the bottom side slab 11a of the pillar 10 with the anchor 24. The method of claim 1,
After the installation of the corner angle (18), the construction of the main head of the column on the upper part of the column (10),
The construction of the pillar head,
The head web 301, the head top flange 303 bent outward of the post 10 from the top of the head web 301, the head top flange 303 from the bottom of the head web 301 to the outside of the post 10 ), the main head lower flange 303, the main head upper and lower flanges 303 and 303, and a plurality of main head stiffeners 304 joined to the main head web 301 that are bent to a larger width than the main head reinforcing bar 30 and ,
The head reinforcing bar 30 is disposed along the circumference in a one-to-one correspondence with the steel plate 14 for pillar reinforcement at the lower part of the pillar 10, and the adjacent head reinforcing bar 30 is attached to the head head upper connection bar 31 and the head head lower part connected by bolting through the connecting rod 32 and the main head intermediate connecting rod 33;
A seismic reinforcement method for DIY reinforcement of multi-family piloti pillars, comprising the step of fixing and installing the head reinforcement 30 to the ceiling side slab 11b of the pillar 10 with the anchor 34. 3. The method of claim 2,
The plinth upper connecting rod 21 and the plinth lower connecting rod 22 have an L-shaped cross-sectional structure, and the plinth harness plates 211 and 221 formed at each end are bolted to the plinth stiffener 204 of the plinth reinforcing bar 20, characterized in that Seismic reinforcement method for DIY reinforcement of multi-family piloti columns. 4. The method of claim 3,
The head upper connecting rod 31 and the main head lower connecting rod 32 have an L-shaped cross-sectional structure, and the head harness plates 311 and 321 formed at each end are bolted to the head stiffener 304 of the head head reinforcing bar 30, characterized in that Seismic reinforcement construction method for DIY reinforcement of multi-family piloti columns. 3. The method of claim 2,
After disposing the plinth fastener 51 between the steel plate 14 for column reinforcement on the back side of the plinth reinforcing bar 20, the plinth upper connecting bar 21, the plinth lower connecting bar 22, and the plinth intermediate connecting bar 23 ), a seismic reinforcement method for DIY reinforcement of a multi-family piloti column, characterized in that the bolting is made. 4. The method of claim 3,
After disposing the head fastener 52 between the steel plate 14 for column reinforcement on the back of the head reinforcement 30, the head head upper connection member 31, the head head lower coupling member 32, and the head head intermediate connection member 33 ), a seismic reinforcement method for DIY reinforcement of a multi-family piloti column, characterized in that the bolting is made.

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