KR102285004B1 - Concrete Column Structures Reinforcing Method Using Reinforced Steel Plate - Google Patents

Abstract

In the present invention, socket anchors and reinforcing channels are installed on each side of a concrete column structure, the external surface of the concrete column structure is reinforced with an external reinforcing steel plate, and both the reinforcing channel and the external reinforcing steel plate are restrained with a socket anchor by bolting to the socket anchor. It relates to a method of earthquake-resistant, repairing, and reinforcing concrete column structures using socket anchors and reinforcing channels that allow for excellent strength and rigidity while making construction very easy.
The present invention comprises the steps of: (a) cutting a certain section of the central portion in the width direction of each side of a concrete column structure to a certain depth and cutting both sides of the cut section to a certain depth in the width direction to form a U-shaped groove; (b) forming anchor holes of a certain depth at regular intervals in the longitudinal direction in the central portion of the U-shaped groove in the width direction; (c) inserting the socket anchor into the anchor hole so that the other end protrudes a predetermined length; (d) filling the U-shaped groove with mortar and installing the U-shaped groove so that the other end of the socket anchor is inserted into the through-hole of the reinforcing channel; (e) applying mortar to the outer surface of the concrete column structure; (f) An overlapping section is formed by overlapping a pair of external reinforcing steel plates having a C-shaped cross section so that the joint holes are matched on both sides of the concrete column structure, and the other end of the socket anchor penetrates the joint hole and the end of the socket anchor is exposed to the outside sequentially installing a pair of external reinforcing steel plates at regular intervals in the longitudinal direction of the concrete column structure; (g) fastening the bolt to the socket anchor from the outside of the overlapping section of the pair of external reinforcing steel plates;

Description

Seismic Resistance, Repair, and Reinforcement Method of Concrete Column Structures Using Socket Anchors and Reinforcing Channels

The present invention relates to a method of earthquake resistance, repair, and reinforcement of a concrete column structure using a socket anchor and a reinforcing channel, and more particularly, to a concrete column structure by installing a socket anchor and a reinforcing channel on each side of the concrete column structure and using an external reinforcing steel plate Concrete column structure using socket anchors and reinforcing channels to reinforce the outer surface of the wall and to bind the reinforcing channels and external reinforcing steel plates with the socket anchors by bolting them to the socket anchors, thereby providing excellent strength and rigidity and very easy construction. It is about earthquake resistance, repair and reinforcement construction methods of

There was a problem in that the load-bearing capacity and durability were lowered due to deterioration of the structure due to the increase in the service life, the neutralization of concrete due to the effects of disasters, peeling due to material separation, and the occurrence of cracks due to structural causes.

Recently, there is an increasing demand for structural repair and reinforcement due to the increase in strength of existing structures and deterioration of durability due to environmental problems, as well as earthquake-resistance reinforcement of structures due to deterioration of structures or reinforcement of seismic regulations.

As the background technology of the present invention, there is Patent Registration No. 1618252 "Fibre-reinforced plastic (FRP) reinforcing device and method for reinforcing structures using the same" (Patent Document 1). In the background art, a plurality of 'roving-type fiber bundles (1) are arranged and the entire FRP core 10 is impregnated with resin from one end to the other end to have a bar shape; an anchor mount 20 in the form of a circular rod or polygonal rod formed perpendicular to the FRP core 10, arranging a plurality of fiber bundles 1 in a roving form, and impregnated with resin; It becomes a tubular body coupled to surround the outer surface of the anchor mount 20 and includes an anchor 30 inserted and fixed together with the anchor mount 20 into a hole (H) formed in a structure to be reinforced; The anchor 30 is fiber-reinforced, characterized in that it is made of any one of a metal tubular body, a tubular body made by impregnating a fiber bundle with resin, and a tubular body made by rolling a fiber-embedded composite material sheet into a tubular shape Using a plastic (FRP) reinforcing device, comprising the steps of: (a) spraying a resin together with fibers on the surface of a structure to be reinforced to construct a first fiber-reinforced coating layer 50; (b) inserting the anchor 30 of the fiber-reinforced plastic (FRP) reinforcement device into the hole (H) of the structure to cover the first fiber-reinforced coating layer 50 ' is suggested.

However, in the background art, a fiber-reinforced plastic (FRP) reinforcement device is installed by spraying a resin together with a fiber on the surface of the structure, but by attaching it to the surface of the structure, it is easily destroyed by slip and impact from the external environment. there was.

Patent Registration No. 1618252 "Fibre-reinforced plastic (FRP) reinforcement device and structure reinforcement method using the same"

The present invention is to solve the above problems, by installing socket anchors and reinforcing channels on each side of the concrete column structure, reinforcing the outer surface of the concrete column structure with an external reinforcing steel plate, and bolting the socket anchor to the socket anchor. A method of seismic resistance, repair, and reinforcement of concrete column structures using socket anchors and reinforcing channels, which improves the adhesion performance by restraining both the reinforcing channel and external reinforcing steel plate with the help of the Its purpose is to provide

The present invention comprises the steps of: (a) cutting a certain section of the central portion in the width direction of each side of a concrete column structure to a certain depth and cutting both sides of the cut section to a certain depth in the width direction to form a U-shaped groove; (b) forming anchor holes of a certain depth at regular intervals in the longitudinal direction in the central portion of the U-shaped groove in the width direction; (c) inserting a socket anchor in which the filling material is filled from one end to the central part in a tubular shape with an empty interior and a thread is formed on the inner circumferential surface from the other end to the central part into the anchor hole so that the other end protrudes a certain length; (d) A reinforcing channel consisting of a horizontal plane through which the through-holes are passed at regular intervals in the longitudinal direction and a support surface extending at right angles from both sides in the width direction of the horizontal plane, fill the U-shaped groove with mortar, Installing in the U-shaped groove so that the end is inserted; (e) applying mortar to the outer surface of the concrete column structure; (f) A pair of external reinforcing steel plates having a C-shaped cross section consisting of a plate-shaped reinforcing part of a certain length and a coupling part extending in a right angle direction from both ends of the reinforcing part and having a coupling hole through the outer end at regular intervals in the longitudinal direction. At regular intervals in the longitudinal direction of the concrete column structure, a pair of external reinforcing steel plates are installed so that the coupling parts are overlapped so that the coupling holes on both sides of the structure coincide, and the other end of the socket anchor penetrates the coupling hole to expose the end of the socket anchor to the outside. successive installation; (g) fastening the bolt to the socket anchor from the outside of the pair of external reinforcing steel plate overlapping sections want to

In addition, in step (c), a plurality of slits are formed at the other end of the socket anchor, and in step (g), the socket anchor and concrete using a reinforcing channel, characterized in that the slits are joined so that the slits are widened when the bolts are fastened. It is intended to provide earthquake-resistance, repair, and reinforcement construction methods for column structures.

In addition, in step (c), the socket anchor is intended to provide a seismic resistance, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that a rubber ring is formed on the inner circumferential surface where the thread is formed.

In addition, in step (c), the socket anchor is to provide a seismic resistance, repair, reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that the other end of the socket anchor is bent outwardly to form an extended flange portion.

In addition, in step (d), it is intended to provide a seismic resistance, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcement channel, characterized in that one or more reinforcing bars are configured in the longitudinal direction on the rear surface of the horizontal plane of the reinforcement channel. .

In addition, in step (d), the outer end of the support surface of the reinforcing channel is cut to have concavities and convexities to provide a seismic resistance, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that the concavo-convex portion is formed. do.

In addition, in step (d), a plurality of through-holes are formed in the support surface of the reinforcing channel to provide an earthquake-resistant, repairing, and reinforcing method of a concrete column structure using a socket anchor and a reinforcing channel.

In addition, in step (f), the seismic resistance, repair, and reinforcement method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that the overlapping sections of a pair of vertically adjacent external reinforcing steel plates are positioned in alternating directions. would like to provide

In addition, in step (f), the outer reinforcing steel sheet of the other side of the external reinforcing steel sheet has a coupling jaw formed in the overlapping section portion so that the cross section is extended to the outside, so that the inside of the coupling jaw is placed on the upper portion of the coupling portion of the external reinforcing steel sheet on the one side An object of the present invention is to provide a seismic resistance, repair, and reinforcement method of a concrete column structure using a socket anchor and a reinforcement channel, characterized in that the surfaces are closely coupled.

The seismic resistance, repair, and reinforcement method of a concrete column structure using a socket anchor and a reinforcing channel of the present invention installs a socket anchor and a reinforcing channel on each side of the concrete column structure, and reinforces the outer surface of the concrete column structure with an external reinforcing steel plate, By bolting the socket anchor to the socket anchor, both the reinforcing channel and the external reinforcing steel plate are restrained with the socket anchor to increase the attachment performance, while having excellent strength and rigidity, and it is very useful to make construction very easy.

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.
1 to 8 are cross-sectional views sequentially showing earthquake resistance, repair, and reinforcement construction methods of a concrete column structure using a socket anchor and a reinforcing channel of the present invention.
9 is a partially exploded perspective view and a perspective view of a combined state of FIG. 8 .
10 is a perspective view of another embodiment of FIG. 9B.
Figure 11a is a perspective view and a cross-sectional view of the socket anchor of the present invention.
Figure 11b is a cross-sectional view of another embodiment of the socket anchor of the present invention.
12 is a perspective view of a reinforcing channel and various modifications of the present invention.
13 is a side view of an embodiment of a bolt used in 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.

Hereinafter, the technical configuration of the present invention will be described in detail according to a preferred embodiment.

1 to 8 are cross-sectional views sequentially illustrating the earthquake resistance, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel of the present invention, and FIG. 9 is a partially exploded perspective view of FIG. .

With reference to the drawings, the earthquake resistance, repair, and reinforcement method of the concrete column structure using the socket anchor and the reinforcing channel of the present invention will be described in detail in the order of construction as follows.

The earthquake-resistant, repair, and reinforcement method of the concrete column structure using the socket anchor and the reinforcing channel of the present invention is first, as shown in FIG. Both sides of the cut section in the width direction are cut to a predetermined depth to form the U-shaped groove 11 (a).

A U-shaped groove 11 is formed on each side of the concrete column structure 10 to work for reinforcing each side. The U-shaped groove 11 is formed in the entire longitudinal direction in a certain section of the central portion in the width direction of each side of the concrete column structure 10, and such a U-shaped groove 11 is a reinforcing channel ( 30) is configured to attach.

The shape of the U-shaped groove 11 is cut to a certain depth by cutting a certain section of the central portion in the width direction of each side of the concrete column structure 10 to a certain depth so that the shape of the reinforcing channel 30 is the same as the shape of the reinforcing channel 30. 31) to prevent further protrusion from the outer surface of the concrete column structure 10 to the outside, and cut both sides in the width direction of the cut section to a certain depth so that the support surface 32 of the reinforcement channel 30 can be inserted. A U-shaped groove 11 is formed.

At this time, the U-shaped groove 11 may be formed to be larger than the size and thickness of the reinforcing channel 30 to form a space for filling the mortar 13 .

Thereafter, as shown in FIG. 2 , anchor holes 12 of a certain depth are formed at regular intervals in the longitudinal direction in the central portion of the U-shaped groove 11 in the width direction (b).

The anchor hole 12 allows the socket anchor 20 to be inserted, and is formed to a predetermined depth according to the length of the socket anchor 20 so that the socket anchor 20 can be inserted.

Thereafter, as shown in FIG. 3 , the socket anchor 20 is inserted into the anchor hole 12 to temporarily couple the socket anchor 20 (c).

Since the socket anchor 20 is fixed in position without a separate coupling means, the socket anchor 20 may be removed and installed again if necessary when the reinforcement channel 30 is installed in a step to be described later.

Figure 11a is a perspective view and a cross-sectional view of a socket anchor of the present invention, Figure 11b is a cross-sectional view of another embodiment of the socket anchor of the present invention.

The socket anchor 20 is filled with a variety of known fillers 121, such as epoxy, from one end to the center in a tubular shape with an empty inside, as shown in FIG. to be formed, so that it is easy to combine the bolts.

Such a socket anchor 20 is a reinforcing channel by the socket anchor 20 in the step to be described later by inserting the socket anchor 20 into the anchor hole 12 so that the other end protrudes from the anchor hole 12 by a predetermined length. (30) to be combined.

In particular, as in Fig. 11a (a), the socket anchor 20 has a plurality of slits 26 formed at the other end, so that, in step (g), the slit 26 portion is formed when the bolt 50 is fastened. It can be coupled so as to increase the coupling force, and as shown in FIG. 11b, the socket anchor 20 has a rubber ring 27, preferably an inelastic rubber ring, formed on the inner circumferential surface where the thread is formed, so that the bolt 50 is fastened. It can be made to increase the bonding force.

In addition, as shown in Figure 11 (b) c, the socket anchor 20 has the flange portion 28 at the time of installation of the socket anchor 20 by forming a flange portion 28 extending by bending the other end of the socket anchor 20 to the outside. ) may serve to hold the external reinforcing steel plates 40 and 40 ′ to prevent separation of the external reinforcing steel plates 40 and 40 ′.

Then, as in FIGS. 4 and 5 , the reinforcing channel 30 is installed in the U-shaped groove 11 (d).

12 is a perspective view of a reinforcing channel and various modifications of the present invention.

12A, the reinforcing channel 30 is a horizontal surface 31 through which the through-holes 311 are penetrated at regular intervals in the longitudinal direction and a support surface 32 extending at right angles from both sides of the horizontal surface 31 in the width direction. is done

The through hole 311 is configured to match the spacing of the anchor hole 12 , and in order to install such a reinforcing channel 30 , the U-shaped groove 11 and the anchor hole 12 and the outside of the socket anchor 20 . A mortar 13 such as epoxy mortar is injected between the surfaces, and a reinforcing channel 30 is installed.

At this time, the other end of the socket anchor 20 is inserted into the through hole 311 of the reinforcing channel 30 so that the outer end of the socket anchor 20 is exposed to the outside. At this time, the socket anchor 20 may be configured to further protrude to the outside in the portion where the position of the overlapping section (d) of the external reinforcing steel plates 40, 40' is formed.

In this way, by inserting the other end of the socket anchor 20 into the through hole 311 of the reinforcing channel 30, the reinforcing channel 30 is coupled to the concrete column structure 10 with the socket anchor 20, The reinforcing channel 30 can be stably installed in the U-shaped groove 11 .

In particular, the reinforcing channel 30 is configured such that one or more reinforcing bars 60 are configured in the longitudinal direction on the rear surface of the horizontal surface 31 of the reinforcing channel 30 in step (d), as in FIG. 12b , It may be positioned inside the mortar 13 between the reinforcing channel 30 and the outer surface of the U-shaped groove 11 to serve as a reinforcing bar.

In addition, as in FIG. 12c, the outer end of the support surface 32 of the reinforcing channel 30 is cut to have concavities and convexities to form the concavo-convex portion 321 or as in FIG. 12d, the support of the reinforcing channel 30 A plurality of through holes 322 are formed on the surface 32 to resist the shear force of the mortar 13 when inserted into the U-shaped groove.

Thereafter, as in FIG. 6 , the mortar 13 is applied to the entire outer surface of the concrete column structure 10 (e).

Such an operation fills the gap between the external reinforcing steel plates 40 and 40 ′ and the outer surface of the concrete column structure 10 and attaches the external reinforcing steel plates 40 and 40 ′ to the concrete column structure 10 . proceed

Thereafter, as in FIGS. 7 and 9 , a plurality of external reinforcing steel plates 40 , 40 ′ are installed so as to be continuous in the longitudinal direction of the concrete column structure 10 (f).

As shown, the external reinforcing steel plates 40 and 40 ′ extend in a right angle direction from both ends of the reinforcing portion 41 and the reinforcing portion 41 of a predetermined length, and have coupling holes at regular intervals in the longitudinal direction at the outer end. (421) is made up of a coupling portion 42 formed through a hole to have a C-shaped cross-section, so that a pair of external reinforcing steel plates 40, 40' are fitted and coupled at both sides of the concrete column structure 10, respectively, At this time, the pair of external reinforcing steel plates 40 and 40 ′ overlap the coupling portion 42 in the concrete column structure 10 to form the overlapping section portion d.

At this time, the overlapping section portion (d) allows the coupling holes 421 and 421 of the coupling portions 42 of the external reinforcing steel plates 40 and 40 ′ on both sides to match, and the other end of the socket anchor 20 is By penetrating the coupling holes 421 and 421 to expose the end of the socket anchor 20 to the outside, the reinforcing channel 30 and a pair of external reinforcing steel plates 40 and 40 ' as the socket anchor 20 It serves to bind and bind at the same time.

Such a pair of vertically adjacent external reinforcing steel plates 40, 40' may be installed so that the overlapping section d coincides in the vertical direction, as shown in FIG. 9, and as shown in FIG. 10, vertically adjacent By configuring the overlapping section portions (d) of the pair of external reinforcing steel plates 40 and 40' to be positioned in alternating directions, it is also possible to increase the strength of the coupling portion.

Finally, as shown in FIGS. 8 and 9, the bolt 50 is fastened to the socket anchor 20 from the outside of the pair of external reinforcing steel plates 40 and 40 ′ overlapping section d (g) ).

In this way, by fastening the bolt 50 to the socket anchor 20 exposed to the outside of the pair of external reinforcing steel plates 40, 40 ', the overlap section portion (d), the socket anchor 20 is a reinforcing channel ( 30) through the through hole 311 and the pair of external reinforcing steel plates 40, 40 ', the socket anchor 20 is expanded by the bolt 50 while passing through the coupling hole 421 of 40'. let it be

In addition, the outer reinforcing steel sheet 40' of the other side of the external reinforcing steel sheets 40 and 40' has a coupling jaw 48 formed in the overlapping section portion (d) so that the cross section is expanded to the outside, so that the outer side of the one side is formed. A phenomenon in which the inner surface of the coupling jaw 48 is in close contact with the upper portion of the coupling part 42 of the reinforcing steel plate 40 and is lifted due to the overlap of the coupling part 42 on the outer surface of the concrete column structure 10 . can also be prevented.

13 is a side view of an embodiment of a bolt used in the present invention.

As the bolt 50 used here, a variety of known bolts can be used, and in the present invention, as shown in FIG. 13, in particular, a headless bolt consisting of only a body without a head is used, and external reinforcing steel plates 40, 40' ), the bolt 50 may not protrude to the outside.

In the earthquake-resistant, repair, and reinforcement method of a concrete column structure using the socket anchor and reinforcing channel of the present invention as described above, a socket anchor and a reinforcing channel are installed on each side of the concrete column structure, and the external surface of the concrete column structure is reinforced with an external reinforcing steel plate. By reinforcing and bolting to the socket anchor, both the reinforcing channel and the external reinforcing steel plate are restrained with the socket anchor, thereby increasing the attachment performance, while providing excellent strength and rigidity, and very useful effect of making construction very easy.

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.

10: concrete column structure
11: U-shaped groove
12: anchor hole
121: filling material
13 : mortar
20: socket anchor
30: reinforcement channel
31: horizontal plane
311: through hole
32: support surface
40, 40' : External reinforcement plate
41: reinforcement part
42: coupling hole
421: coupling hole
50: bolt
60: reinforcing bar
d: overlapping section

Claims (9)

(a) forming a U-shaped groove 11 by cutting a predetermined section of the central portion in the width direction of each side of the concrete column structure 10 to a predetermined depth and cutting both sides of the cut section to a predetermined depth in the width direction;
(b) forming anchor holes 12 of a certain depth at regular intervals in the longitudinal direction in the central portion of the U-shaped groove 11 in the width direction;
(c) Anchor hole 12 so that the other end protrudes a certain length through the socket anchor 20, in which the filler 121 is filled from one end to the central part in a tubular shape with an empty inside, and a thread is formed on the inner peripheral surface from the other end to the central part ) to insert into;
(d) a reinforcing channel 30 consisting of a horizontal surface 31 through which the through-holes 311 are penetrated at regular intervals in the longitudinal direction and a support surface 32 extending at right angles from both sides of the horizontal surface 31 in the width direction, U Filling the mold groove 11 with mortar 13 and installing the other end of the socket anchor 20 into the through hole 311 of the reinforcement channel 30 in the U-shaped groove 11 so that the other end is inserted;
(e) applying the mortar 13 to the outer surface of the concrete column structure 10;
(f) a plate-shaped reinforcing portion 41 of a certain length, and a coupling portion 42 extending in a right angle direction from both ends of the reinforcing portion 41 and having coupling holes 421 through the outer end at regular intervals in the longitudinal direction. A pair of external reinforcing steel plates (40, 40') having a C-shaped cross section consisting of
At both sides of the concrete column structure 10, the coupling parts 42 overlap so that the coupling holes 421 and 421 coincide with each other to form an overlap section d, and the other end of the socket anchor 20 has a coupling hole 421. Installing a pair of external reinforcing steel plates 40 and 40 ′ consecutively at regular intervals in the longitudinal direction of the concrete column structure 10 so that the ends of the socket anchors 20 are exposed to the outside through the (421);
(g) fastening the bolts 50 to the socket anchors 20 from the outside of the pair of external reinforcing steel plates 40 and 40' overlapping section (d); and earthquake-resistance, repair, and reinforcement of concrete column structures using reinforcing channels. The method according to claim 1,
(c) in step,
The socket anchor 20 has a plurality of slits 26 formed at the other end thereof,
(g) in step,
Seismic resistance, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcement channel, characterized in that the slit 26 is coupled so that the slit 26 is widened when the bolt 50 is fastened. The method according to claim 1,
(c) in step,
The socket anchor 20 is a seismic, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that a rubber ring 27 is formed on the inner circumferential surface where the thread is formed. The method according to claim 1,
(c) in step,
The socket anchor 20 is a seismic, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that the other end is bent outwardly and a flange portion 28 is formed. The method according to claim 1,
In step (d),
Seismic resistance, repair, reinforcement construction method of a concrete column structure using a socket anchor and a reinforcement channel, characterized in that one or more reinforcing bars (60) are configured in the longitudinal direction on the rear surface of the horizontal surface (31) of the reinforcement channel (30). The method according to claim 1,
In step (d),
The outer end of the support surface 32 of the reinforcing channel 30 is cut to have concavities and convexities to form the concavo-convex portion 321. Seismic resistance, repair, and reinforcement method of a concrete column structure using a socket anchor and a reinforcing channel. The method according to claim 1,
In step (d),
Seismic resistance, repair, and reinforcement method of a concrete column structure using a socket anchor and a reinforcement channel, characterized in that a plurality of through-holes 322 are formed in the support surface 32 of the reinforcement channel 30. The method according to claim 1,
In step (f),
Seismic resistance, repair, reinforcement method. The method according to claim 1,
In step (f),
The outer reinforcing steel sheet 40' of the other side of the external reinforcing steel sheets 40 and 40' has a coupling jaw 48 formed in the overlapping section (d) portion so that the cross section is expanded to the outside, so that the external reinforcing steel sheet of one side Seismic resistance, repair, and reinforcement construction method of a concrete column structure using a socket anchor and a reinforcing channel, characterized in that the inner surface of the coupling jaw 48 is closely coupled to the upper portion of the coupling part 42 of (40).

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