KR102383859B1 - Seismic retrofit frame structure - Google Patents

Abstract

The present invention relates to a frame structure for seismic reinforcement. The frame structure for seismic reinforcement is capable of excellently improving seismic performance. The frame structure for seismic reinforcement comprises: first and second vertical members (102, 104); third and fourth vertical members (104, 106); first and second horizontal members (110, 112); third and fourth horizontal members (114, 116); a lower side reinforcement port (122); and corner reinforcement ports (124,126,128,130).

Description

Seismic retrofit frame structure

The present invention relates to a frame structure for earthquake-resistant reinforcement, and more particularly, a rectangular frame shape by installing a connecting portion of a column, a horizontal member, and a vertical member using a brace, and filling the horizontal member, a vertical member, and a brace with an earthquake-resistant buffer member It relates to a frame structure for earthquake-resistant reinforcement that can safely secure the reinforcement frame of

In recent years, as the number of earthquakes increases and the intensity of earthquakes also increases, the demand for seismic reinforcement for existing reinforced concrete structures is increasing.

All buildings should be built by seismic design in preparation for seismic resistance, and since seismic design regulations were not applied to existing buildings, there was a need to have a structure for seismic reinforcement of the building.

In the case of the Ramen group consisting of columns and beams among the conventional building structures, H-beam steel frames are installed inside the column-beam frames to secure seismic performance and to maintain the maximum open area of the opening at the same time to increase the rigidity and ductility of the structure. technology was used.

These prior art installations were installed by fixing the outer flange of the H-beam member to the inner surface of the existing member using an anchor bolt to fix the H-beam steel frame to the existing member.

However, this method has the disadvantage that the anchor bolt is missing or not properly fixed due to interference with the flange during anchor hole drilling or anchor bolt installation work. .

In addition, the existing reinforced concrete frame may have different member sizes due to construction errors, etc. For frame reinforcement, the steel frame members manufactured at the factory and brought into the site have different sizes, so the steel frame members are cut and cut at the site. Therefore, the cumbersome use and complexity of the construction work were raised.

In order to solve these difficulties in construction, seismic reinforcement technology that can facilitate anchor bolt construction by using T-beams other than H-beams to secure the web with bolts has also been disclosed.

However, when the web of the T-beam is fastened with bolts, there is a problem in that the concentrated stress is greatly generated at the bolted portion and is damaged when an earthquake occurs.

Korean Patent Registration No. 10-1185974 (Registered on September 19, 2012) Korean Patent Registration No. 10-1459082 (Registered on October 31, 2014)

The present invention has been devised to solve the above problems, and it is possible to protect the rectangular frame-shaped structures of existing building structures such as schools and buildings from external shocks, vibrations and earthquakes. An object of the present invention is to provide a frame structure for earthquake-resistant reinforcement for excellent improvement.

The present invention provides an earthquake-resistant reinforcement frame for excellently improving the earthquake-resistance performance by filling the shock-proofing material so that the vertical and horizontal reinforcing members and braces constituting the building structure can be supported firmly by alleviating shock and vibration and supplementing the strength. Its purpose is to provide structure.

The present invention is not limited to the above purpose and other objects not mentioned may be provided within a range that can be clearly understood by those of ordinary skill in the art to which the present invention pertains.

The present invention includes a first vertical member 102 and a second vertical member 104 installed vertically on the left side; a third vertical member 104 and a fourth vertical member 106 which are vertically installed to face right portions of the first vertical member 102 and the second vertical member 104; a first horizontal member 110 and a second horizontal member 112 installed horizontally to connect the lower ends of the first vertical member 102 and the third vertical member 106; a third horizontal member 114 and a fourth horizontal member 116 installed horizontally to connect the upper ends of the second vertical member 104 and the fourth vertical member 108; a lower side reinforcing member 122 installed in the middle of the first horizontal member 110 and the second horizontal member 112; And the first to fourth vertical members and the first to fourth horizontal members including a corner reinforcement (124,126, 128,130) for reinforcing the corners meet each other. a first inclined brace 118 that is installed with a lower end fixed to one side of the lower side reinforcement 122 and connected to a corner reinforcement 128 that has an upper end installed on the left upper end; The lower end is fixed to the other side of the lower side reinforcement part 122, and the upper part is characterized in that it includes a second inclined brace 120 connected to the corner reinforcement part 130 installed in the upper right part.

The lower side reinforcement 122 of the present invention,

a vertical connecting portion 20 formed in a channel shape and having a concave-convex connecting groove 24 formed in the lower inner side; Fixed flange portions 22 and 23 extending on both sides of the vertical connection portion 20 and having a plurality of anchor holes 38 formed therein; It is preferable to provide a brace connection flange 26 formed so as to protrude upward to the upper surface of the vertical connection portion 20.

Corner reinforcement 124 of the present invention,

a horizontal connection part 30 formed in a channel shape and having a horizontal member connection groove 32 having a concave-convex shape inside the lower side; a vertical connection part 40 extending from the horizontal connection part 30, bent in a vertical direction, formed in a channel shape, and having a concave-convex vertical member connection groove 42 formed inside the left side; a horizontal anchor flange portion 36 and a vertical anchor flange portion 44 extending to the left and right sides of the horizontal connection portion 30 and the vertical connection portion 40; It is preferable to provide a brace connection tip portion 46 made of a triangular shape to the horizontal connection portion 30 and the vertical connection portion 40.

As such, the present invention installs a reinforcing material for reinforcing earthquake resistance in a square frame-shaped building structure such as a school or a building, and injects a filler into the reinforcing material to excellently improve the resistance to bending and shearing. , it has the effect of excellently improving the seismic performance by absorbing the shocks for vertical and horizontal loads by connecting and installing the reinforcement for fixing the inclined braces.

1 is a perspective view showing a frame structure for earthquake-resistant reinforcement of the present invention;
Figure 2 is an exploded perspective view showing a frame structure for earthquake-resistant reinforcement of the present invention;
3 is a front view showing a frame structure for earthquake-resistant reinforcement of the present invention;
Figure 4 is a partial enlarged view showing the reinforcement structure of the frame structure for earthquake-resistant reinforcement of the present invention
5 is a side view of FIG. 3
6 is a plan view of FIG. 3
7 is a view showing a horizontal member of the frame structure for earthquake-resistant reinforcement of the present invention
8 is a cross-sectional view of FIG.
9 is a process diagram showing the manufacturing sequence of the horizontal member of the frame structure for seismic reinforcement of the present invention
10 is a process diagram showing the reinforcement sequence of the side reinforcement of the frame structure for earthquake-resistant reinforcement of the present invention

The following objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed subject matter may be thorough and complete, and that the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

Embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, an element referred to as 'comprise' and/or 'comprising' does not exclude the presence or addition of one or more other elements.

In addition, in describing the components described as embodiments below, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to make the gist of the present invention clearer without obscuring the gist of the present invention by omitting unnecessary description.

Hereinafter, specific embodiments according to the frame structure for earthquake-resistant reinforcement of the present invention will be described.

1 is a perspective view showing the earthquake-resistant reinforcement frame structure of the present invention, Figure 2 is an exploded perspective view showing the earthquake-resistant reinforcement frame structure of the present invention, Figure 3 is a front view showing the earthquake-resistant reinforcement frame structure of the present invention.

4 is a partially enlarged view showing the reinforcement structure of the frame structure for earthquake-resistant reinforcement of the present invention, FIG. 5 is a side view of FIG. 3 , and FIG. 6 is a plan view of FIG. 3 .

And, FIG. 7 is a view showing a horizontal member of the frame structure for earthquake-resistant reinforcement of the present invention, FIG. 8 is a cross-sectional view of FIG. 7, and FIG. 9 is a process diagram showing the manufacturing sequence of the horizontal member of the frame structure for earthquake-resistant reinforcement of the present invention am.

In addition, Figure 10 is a process diagram showing the reinforcement sequence of the side reinforcement of the frame structure for earthquake-resistant reinforcement of the present invention.

When the frame structure for earthquake-resistant reinforcement of the present invention will be described with reference to FIGS. 1 to 10 , first, as shown in FIGS. 1 to 3 , the earthquake-resistant reinforcement frame structure 100 of the present invention is vertical in the vertical direction. and a first vertical member 102 installed on the left side, a second vertical member 104, and a third vertical member 106 and a fourth vertical member 108 installed on the right side of the opposite position, A first horizontal member 110, a second horizontal member 112, and the second vertical member 104 installed horizontally at the lower ends of the first vertical member 102 and the third vertical member 106, It includes a third horizontal member 114 and a fourth horizontal member 116 installed horizontally on the upper end of the fourth vertical member (108).

And the first horizontal member 110 and the second horizontal member 112 installed horizontally at the lower end are connected and installed at the center of the corner portion where the second vertical member 104 and the third horizontal member 114 meet. A first inclined brace 118 connected to and the fourth vertical member 108 and the fourth horizontal member 116 include a second inclined brace 120 that is connected and installed inside the corner where each other meets .

The lower side reinforcement 122 is connected to the lower end of the first inclined brace 118 and the second inclined brace 120 installed as described above.

A corner reinforcement 124 is installed at a portion where the lower end of the first vertical member 102 and the left end of the first horizontal member 110 meet, and the lower end of the third vertical member 106 and the second A corner reinforcement 126 is installed at a portion where the right end of the second horizontal member 112 meets, and a corner at a portion where the upper end of the second vertical member 104 and the left end of the third horizontal member 114 meet A reinforcing member 128 is installed, and a corner reinforcing member 130 is installed at a portion where the upper end of the fourth vertical member 108 and the right end of the fourth horizontal member 116 meet.

The first inclined brace 118 and the second inclined brace 120 are fixed and installed in various positions in the horizontal direction, vertical direction, upward, downward, left direction, right direction, diagonal direction, etc. where reinforcement is required. If possible, the change and installation of such a location can be said to be a simple design change and is within the scope of the present invention.

4, the first vertical member 102 and the second vertical member 104 are vertically coupled and installed in the longitudinal direction, and the lower end of the first vertical member 102 is provided with a corner reinforcement 124, and a corner reinforcement 128 is installed on the upper end of the second vertical member 104, and the first vertical member 102 and the second vertical member 104 are A side reinforcement 132 is fixedly installed in the middle part where it meets.

And on the other side where the first vertical member 102 and the second vertical member 104 are coupled, a third vertical member 106 and a fourth vertical member 108 are installed so as to face each other and face each other.

At this time, the third vertical member 106 and the fourth vertical member 108 are vertically coupled to each other in the vertical direction, and a corner reinforcement 126 is installed at the lower end of the third vertical member 106 and the A corner reinforcement 130 is installed at the upper end of the fourth vertical member 108, and a side reinforcement member 134 is provided at an intermediate portion where the third vertical member 106 and the fourth vertical member 108 meet. It is fixedly installed.

On the other hand, a first horizontal member 110 to connect the lower ends of the first vertical member 102 and the third vertical member 106 at the lower portion where the first vertical member 102 and the third vertical member 106 are installed. And the second horizontal member 112 is connected and installed.

The left end of the first horizontal member 110 is coupled to the right side of the corner reinforcement 124, and the right end of the second horizontal member 112 is coupled to the left side of the corner reinforcement 126, and the A right end of the first horizontal member 110 is installed to face each other with a left end of the second horizontal member 112 .

In addition, a lower side reinforcement member 122 is coupled to the right end of the first horizontal member 110 and the left end of the second horizontal member 112 .

In addition, a third horizontal member 114 to connect the upper ends of the second vertical member 104 and the fourth vertical member 108 to the upper portion where the third vertical member 106 and the fourth vertical member 108 are installed. And the fourth horizontal member 116 is connected and installed.

The left end of the third horizontal member 114 is coupled to the right side of the corner reinforcement member 128 , and the right end of the fourth horizontal member 116 is coupled to the left side of the edge reinforcement member 130 , and the The right end of the third horizontal member 114 is installed to face the left end of the fourth horizontal member 116 .

An upper side reinforcement member 136 is coupled to the right end of the third horizontal member 114 and the left end of the fourth horizontal member 116 .

The lower side reinforcement part 122 is formed with a vertical connection part 20 made of a channel shape, and fixed flange parts 22 and 23 are respectively protruded from the left and right parts of the vertical connection part 20, and the vertical connection part ( 20) is formed in the lower inner side of the concave-convex connection groove 24, the upper central portion of the vertical connection portion 20 protrudes upward to form a brace connection flange 26.

A plurality of brace connection holes 28 are formed in the brace connection flange 26 so that the lower ends of the first inclined brace 118 and the second inclined brace 120 are fixed to each other.

In addition, a plurality of anchor holes 38 are formed in the fixing flange portions 22 and 23 , and the anchor bolts 200 are coupled and fixed to the anchor holes 38 .

The corner reinforcement 124 has a horizontal connection part 30 formed in a channel shape horizontally, and a horizontal member connection groove 32 having a concave-convex shape is formed inside the lower inner side of the horizontal connection part 30, and the horizontal connection part 30 It is preferable that a reinforcement injection hole 34 penetrating in the left and right direction is formed at the rear portion of the , so as to communicate with the horizontal members installed by being fitted in the horizontal member connection groove 32 .

And horizontal anchor flange portions 36 and 37 are formed on the left and right sides of the horizontal connection portion 30 to protrude, and a plurality of anchor holes 38 penetrate through the horizontal anchor flange portions 36 and 37 in the vertical direction. to be formed

An anchor bolt 200 is inserted and fixed to the anchor hole 38 .

A channel-shaped vertical connection portion 40 is formed at the left end of the horizontal connection portion 30 so as to be bent in the vertical direction by 90 degrees to face upward, and a concave-convex vertical member connection groove is formed inside the left side of the vertical connection portion 40 . 42 is formed, and the vertical anchor flange portions 44 and 45 are extended in the shape of wings at front and rear portions of the vertical member connection groove 42 .

A plurality of anchor holes 38 penetrating left and right are formed in the vertical anchor flange portions 44 and 45, and the anchor bolts 200 are coupled and fixed to the anchor holes 38.

The vertical anchor flange portions 44 and 45 are preferably connected to the horizontal anchor flange portion 36 and extend vertically upward.

In addition, a triangular brace connection tip part 46 is formed in the central part of the upper surface of the horizontal connection part 30 and the right side central part of the vertical connection part 40, and the brace connection tip part 46 is made in a flat plate shape and is formed in a left and right direction. It is provided with a brace fixing hole (48) passing through.

The brace connection tip part 46 is coupled to the brace tip part 119 to be described later and is coupled to the brace fixing hole 48 to be connected and installed by fixing means such as bolts, nuts, pieces, rivets, etc. not shown.

On the other hand, the side reinforcement member 132 connects the first vertical member 102, the second vertical member 104, the third vertical member 106 and the fourth vertical member 108, or is installed in the middle. , The first to fourth vertical members can be separated when the distance is long, and when the distance is short, one vertical member can be applied and used, and even in the case of the first to fourth horizontal members, the drawing can be applied. can

A brace tip part 119 is coupled to the upper end of the first inclined brace 118 and the second inclined brace 120 to be installed, and the brace tip part 119 is a rectangular body tip part 50 is formed. There is, one side end of the body tip portion 50, preferably the end coupled to the upper end of the first inclined brace and the second inclined brace, side blocking portions 52 and 53 branched to both sides are formed and the side Concave-convex coupling grooves 54 are formed in the middle of the blocking portions 52 and 53 .

The above-described brace connection tip portion 46 is coupled to the coupling groove 54 and installed.

In addition, the fixing holes 56 penetrating in the front-rear direction are formed in the side blocking portions 52 and 53 , and the fixing holes 56 are formed to coincide with the center of the brace fixing holes 48 .

In addition, it is preferable that the reinforcing material injection hole 11 for injecting the filler 18 is formed at the end of the vertical members and the horizontal members.

As shown in FIG. 7 , the first horizontal member 110 is formed of a rectangular hollow shape body 10 extending long in the horizontal direction, and filling holes 12 in the hollow part of the mold body 10 . this is formed

The filling hole 12 is filled with a filler 18 to withstand vibration, shock and earthquake resistance as a mixed reinforcement made by mixing mortar, epoxy, and the like.

As shown in FIG. 8, a filler 18 is filled inside the form body 10, and a first reinforcing material 14 is attached to the outer surface of the form body 10, and the first reinforcing material ( A second reinforcing material 16 is attached to the outer surface of 14).

At this time, as the first reinforcing material 14 and the second reinforcing material 16, any one of carbon fiber, aramid fiber, basalt fiber, and glass fiber may be used, or two or more may be mixed.

In addition, the first reinforcing material 14 is attached in the longitudinal direction of the form body 10 , and the second reinforcing material 16 is attached in the transverse direction of the form body 10 , that is, in the circumferential direction.

To explain in more detail with reference to the bar shown in FIG. 9 , first, the formwork body 10 is prepared, and a background treatment is performed on the outer surface of the formwork body 10 .

The mold body 10 is used by selecting any one of iron, PVC, and FRP.

The first reinforcing material 14 made of a fiber material is attached to the outer surface of the mold body 10 prepared by the background treatment in the longitudinal direction.

Then, the second reinforcing material 16 made of a fiber material is attached to the outer surface of the first reinforcing material 14 in a direction crossing the longitudinal direction, that is, in the circumferential direction of the mold body 10 .

After attaching the first reinforcing material 14 and the second reinforcing material 16 , the filler 18 as a mixed reinforcing material is filled in the filling hole 12 formed inside the mold body 10 .

The filler 18 is preferably used by mixing the molding material and the cohesive material in a ratio of 1.5:1.

The molding material may be used by selecting any one of epoxy resin, mortar, non-shrinkage mortar, and polymer mortar, or by mixing two or more in a predetermined ratio.

The aggregate may be used by selecting any one of carbon fiber, aramid fiber, basalt fiber, and glass fiber, or by mixing two or more in a predetermined ratio.

5 and 6 are views showing a side view and a plan view of the seismic reinforcing frame of the present invention, as shown in FIG. ) is formed.

A third vertical member 106 and a fourth vertical member 108 are installed between the upper beam column 202 and the lower end column 204 .

At the lower end of the third vertical member 106 , a corner reinforcement 126 is fixed to the lower beam column 204 by an anchor bolt 200 , and the third vertical member 126 has the edge reinforcement 126 . 106) is fixed to the lower end.

At the upper end of the fourth vertical member 108 , a corner reinforcement 130 is fixed to the upper beam column 202 by an anchor bolt 200 , and the fourth vertical member 108 is installed in the corner reinforcement 130 . ) and the upper part is fixed.

Next, a side reinforcement member 134 is installed at a middle portion where the upper end of the third vertical member 106 and the lower end of the fourth vertical member 108 meet, and the side reinforcement member 134 is provided on the upper portion of the side reinforcement member 134 . The lower end of the fourth vertical member 108 is coupled and fixed, and the upper end of the third vertical member 106 is coupled and fixed to the lower portion of the side reinforcement 134 .

Referring to FIG. 6 , a left short-beam column 206 is formed on the left side and a right-side short beam column 208 is formed on the right side.

A third horizontal member 114 and a fourth horizontal member 116 are installed between the left short beam pole 206 and the right short beam post 204 .

At the left end of the third horizontal member 114 , a corner reinforcing member 128 is fixedly installed to the left step pillar 206 by an anchor bolt 200 , and the third horizontal member is provided at the corner reinforcing member 128 . The left end of (114) is fixed to the coupling.

At the right end of the fourth horizontal member 116, a corner reinforcing member 130 is fixedly installed to the right side end column 208 by an anchor bolt 200, and the fourth horizontal member (130) has the corner reinforcing member (130). 108) is fixed to the right end.

Next, a side reinforcement member 136 is installed in a middle portion where the right end of the third horizontal member 114 and the left end of the fourth horizontal member 116 meet, and the right side of the side reinforcement member 136 . The left end of the fourth horizontal member 116 is coupled and fixed to the part, and the right end of the third horizontal member 114 is coupled to the left side of the side reinforcement 136 to be fixedly installed.

On the other hand, in the corner reinforcement 130, the right end of the second inclined brace 120 is installed to be inclinedly coupled, the right end of the second inclined brace 120 has a brace tip portion 119 coupled to it. connection is installed.

One end of the brace tip portion 119 is attached to or fitted to the right upper end of the second inclined brace 102 , and the other end is coupled and installed in the corner reinforcement 130 .

10 is a process diagram showing the reinforcement sequence of the side reinforcement of the frame structure for earthquake-resistant reinforcement of the present invention, the side reinforcement 134 is formed in a concave-convex shape, and a long hole-shaped anchor hole 38 penetrating up and down in the left and right sides. is formed, and the anchor bolt 200 is inserted and fixed to the anchor hole 38 .

An adhesive portion 136 is applied to the inner surface of the side reinforcement member 134 , and an epoxy-based adhesive is used as the adhesive applied to the adhesive portion 136 .

The anchor hole 38 of the long hole type is formed to prevent the concrete perforation from interfering with the rebar installation, and at this time, it is formed as a long hole type to avoid interference with the rebar. However, the anchor hole 38 has a long hole In the case of the type, since the fastening force of the anchor bolt 200 is lowered, the reinforcing material 60 is coupled and fixed.

The reinforcing iron material 60 is formed in a rectangular plate shape, the through hole is vertically penetrated so that the anchor bolt 200 is coupled, and is formed in the same size as the wing portion of the side reinforcement member 134 to the left and right sides, respectively. It is formed to be longer in a direction in close contact with the left and right sides of the side reinforcement member 134 at the same time it is installed, and is installed so as not to be moved or shaken when the anchor bolt is coupled, and to be firmly reinforced.

Thereafter, it is fastened to the anchor bolt 200 using a nut 62 on the upper portion of the reinforcing material 60 .

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be variously implemented by those of ordinary skill in the art to which the present invention belongs, and within this range Technical changes will be said to be within the scope of the present invention.

10: mold body 12: filling hole
14: first reinforcing material 16: second reinforcing material
18: filler 20: vertical connection part
22,23: fixed flange part 24: connection groove
26: brace connection flange 28: brace connection hole
30: horizontal connection part 32: horizontal member connection groove
34: reinforcing material inlet 36, 37: horizontal anchor flange part
38: anchor hole 40: vertical connection part
42: vertical member connection groove 44, 45: vertical anchor flange part
46: brace connection tip part 48: brace fixing hole
50: body tip 52,53: side cover
54: coupling groove 56: fixed hole
58: connection hole 60: reinforcing steel
62: nut
100: seismic reinforcement frame
102: first vertical member 104: second vertical member
106: third vertical member 108: fourth vertical member
110: first horizontal member 112: second horizontal member
114: third horizontal member 116: fourth horizontal member
118: first inclined brace 120: second inclined brace
122: lower side reinforcement 124,126,128,130: corner reinforcement
132,134: side reinforcement part 136: upper side reinforcement part
138: adhesive 200: anchor bolt

Claims (3)

a first vertical member 102 and a second vertical member 104 installed vertically on the left side;
a third vertical member 106 and a fourth vertical member 108 that are vertically installed to face right portions of the first vertical member 102 and the second vertical member 104;
a first horizontal member 110 and a second horizontal member 112 installed horizontally to connect the lower ends of the first vertical member 102 and the third vertical member 106;
a third horizontal member 114 and a fourth horizontal member 116 installed horizontally to connect upper ends of the second vertical member 104 and the fourth vertical member 108;
a lower side reinforcing member 122 installed in the middle of the first horizontal member 110 and the second horizontal member 112;
And the first to fourth vertical members and the first to fourth horizontal members including a corner reinforcement (124,126, 128,130) for reinforcing the corners meet each other.
a first inclined brace 118 that is installed with a lower end fixed to one side of the lower side reinforcement 122 and connected to a corner reinforcement 128 that has an upper end installed on the left upper end;
The lower end is fixed to the other side of the lower side reinforcement 122, and the upper end includes a second inclined brace 120 that is installed connected to the corner reinforcement 130 that is installed in the upper right portion,
The lower side reinforcement 122,
a vertical connecting portion 20 formed in a channel shape and having a concave-convex connecting groove 24 formed inside the lower inner side;
Fixed flange portions 22 and 23 extending on both sides of the vertical connection portion 20 and having a plurality of anchor holes 38 formed therein;
and a brace connection flange 26 formed to protrude upward from the upper surface of the vertical connection part 20,
The corner reinforcement 124 is,
a horizontal connection part 30 formed in a channel shape and having a horizontal member connection groove 32 having a concave-convex shape inside the lower side;
a vertical connection part 40 extending from the horizontal connection part 30, bent in a vertical direction, formed in a channel shape, and having a concave-convex vertical member connection groove 42 formed inside the left side;
a horizontal anchor flange portion 36 and a vertical anchor flange portion 44 extending on the left and right sides of the horizontal connection portion 30 and the vertical connection portion 40;
The horizontal connection part 30 and the vertical connection part 40 are provided with a brace connection tip part 46 made in a triangular shape,
The first vertical member, the second vertical member, the third vertical member, the fourth vertical member and the first horizontal member, the second horizontal member, the third horizontal member, the fourth horizontal member is a rectangular hollow shape body (10) is formed, and a filling hole 12 is formed in the hollow part of the mold body 10,
The filling hole 12 is a mixed reinforcing material made by mixing mortar and epoxy, and is filled with a filler 18 to withstand vibration and shock resistance,
The lower side reinforcement part 122 is formed with a vertical connection part 20 having a channel shape, and fixed flange parts 22 and 23 are respectively extended to the left and right parts of the vertical connection part 20, and the vertical connection part ( 20) on the lower inner side of the concave-convex connection groove 24 is formed, the upper central portion of the vertical connection portion 20 protrudes upward to form a brace connection flange 26,
A plurality of brace connection holes 28 are formed in the brace connection flange 26 so that the lower ends of the first inclined brace 118 and the second inclined brace 120 are fixed to each other, and the fixing flange part A plurality of anchor holes (38) are formed in (22, 23), and an anchor bolt (200) is coupled and fixed to the anchor hole (38).
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