KR101253519B1 - Method of aseismic reinforcement for existing building structure using pre cast concrete filled steel tube - Google Patents

Method of aseismic reinforcement for existing building structure using pre cast concrete filled steel tube Download PDF

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KR101253519B1
KR101253519B1 KR1020120124838A KR20120124838A KR101253519B1 KR 101253519 B1 KR101253519 B1 KR 101253519B1 KR 1020120124838 A KR1020120124838 A KR 1020120124838A KR 20120124838 A KR20120124838 A KR 20120124838A KR 101253519 B1 KR101253519 B1 KR 101253519B1
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South Korea
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box
reinforcing steel
shaped reinforcing
reinforcement
steel sheet
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KR1020120124838A
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Korean (ko)
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우종열
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주식회사 힐 엔지니어링
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/36Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/027Preventive constructional measures against earthquake damage in existing buildings

Abstract

The present invention relates to a seismic reinforcement method of an existing building using a concrete-filled steel pipe pillar, and more particularly, reinforcing position selection step (S1) of selecting the positions of the columns and beams to be reinforced among the columns and beams of the existing building; And a reinforcing step (S2) for coupling a concrete filled steel tube (CFT) to the selected position; and configured to include not only the strength of existing building columns and beams, but also the characteristics of concrete and reinforcing steel sheets. By using the concrete-filled steel pipe pillar as described above, the construction is simple and the air is shortened and additional materials such as formwork are not consumed. Accordingly, the present invention relates to a seismic reinforcing method for an existing building using a concrete-filled steel pipe column to improve the reinforcement strength and improve the integrity of the columns and the concrete-filled steel pipe columns of the existing building. .

Description

Seismic Reinforcement Method of Existing Buildings Using Concrete-filled Steel Pipe Columns TECHNICAL REINFORCEMENT FOR EXISTING BUILDING STRUCTURE USING PRE CAST CONCRETE FILLED STEEL TUBE}

The present invention relates to a seismic reinforcement method of an existing building using a concrete-filled steel pipe pillar, specifically, a concrete-filled steel pipe pillar (CFT, registered and filed by the applicant of the present invention (Korean Patent No. 10-1036851). The present invention relates to a seismic reinforcing method for an existing building using a concrete-filled steel pipe pillar, which is characterized by reinforcing columns and beams of an existing building using a concrete filled steel tube.

In general, the design of various buildings entails earthquake-resistant design that can withstand earthquakes. Since the earthquake-resistant design regulations were applied to the Building Act of 1990, the seismic-related regulations in 2005 have been revised to be actualized and strengthened. .

However, the buildings constructed before the seismic design regulations were not only designed and constructed without considering the impact of the earthquake, but also the deterioration performance is increased due to the increase in the number of years of public use.

In other words, the recent earthquakes that occur frequently in neighboring countries of Korea and the enormous human life and property damages caused by them are not safe from earthquakes, but in Korea, more than 80% of existing buildings are defenseless. This can be said to be a real situation, especially in the case of school buildings.

Therefore, the seismic reinforcement method is applied to the existing building that does not consider or lack seismic design as described above.

Unlike the seismic reinforcement method applied to new buildings, the seismic reinforcement method requires reinforcement to existing buildings or facilities, so consideration for usability, economic considerations, and constructability are required. It is necessary to select an appropriate construction method in consideration of the seismic reinforcement method of existing buildings and facilities, there is a method for increasing the rigidity, a method for increasing the ductility, or a method for increasing the rigidity and ductility at the same time.

The commonly adopted method is a method of increasing ductility, a method of covering a reinforcement on a column or beam of an existing building, and a method of increasing the cross-sectional area by using the same member in an existing building. Domestic Patent Publication No. 10-1065469, Patent Document 1, Japanese Patent Application Publication No. 10-2011-0018251, Patent Document 2, and Japanese Patent Application Publication No. 2007-138472 with Patent Document 3 Etc.

Specifically, Korean Patent Publication No. 10-1065469, which is the Patent Document 1, is a method of covering a reinforcing material on a pillar or beam of an existing building, as shown in FIGS. 1A and 2A, the pillar 100 of a building. Alternatively, the steel plate 200 surrounding the beam is fixed to the pillar 100 by the anchor bolt 300, and the epoxy resin 400 is filled in the space between the steel sheet 200 and the pillar 100.

However, the conventional seismic reinforcing method as described above has an enhancement effect on the strength, but there was a problem that the effect is insufficient to increase the stiffness. Here, the term 'stiffness', when considering that the material is to quantify the degree to which the material resists a given deformation when the material is externally deformed, in order to reinforce the seismic performance, although the stiffness must be essentially improved, the prior art Silver has only the enhancement effect on the strength, there is no effect to increase the stiffness, there was a problem that can not properly reinforce the seismic performance.

On the other hand, Korean Patent Publication No. 10-2011-0018251 of the Patent Document 2 is a method of increasing the cross-sectional area by using the same member to the existing building, as shown in Figure 2, the existing concrete structure (1) 1 or 2 rows of resin anchors (2) at regular intervals, 1 or 2 rows of stud bolts (3) are installed on the steel frame (4) for earthquake-resistant reinforcement, and formwork is installed to form high strength mortar (5). It is constructed by pouring.

However, in the conventional technology as described above, as the seismic reinforcement method must include the formwork installation work, the process is complicated and the air increases, as well as the construction cost also increases as additional materials such as formwork are consumed. there was.

On the other hand, Japanese Patent Laid-Open No. 2007-138472, which is Patent Document 3, discloses a technique of installing a reinforcement column 20 in an existing column and filling the concrete 32 to reinforce it, as shown in FIG. .

However, the conventional technology as described above is not only the reinforcement strength is insufficient, but the existing pillars and reinforcement column 20 is not properly deposited, due to this there is a problem that the integrity is not properly implemented to implement the reinforcement effect properly .

: Korean Patent Publication No. 10-1065469 "Shockproof Reinforcement Structure Using Non-Protruding Steel Plate with Circular Wing and Through Hole in Column or Beam of Building and Construction Method thereof" : Korean Laid-Open Patent Publication No. 10-2011-0018251 "Steel Structure for Joining Earthquake Reinforcement Structure and Joining Method" Japanese Laid-Open Patent Publication No. 2007-138472 "Seismic Reinforcement Method for Existing Buildings"

The present invention to solve the above problems, by using the applicant of the present invention (CFT, Concrete Filled Steel Tube) registered and registered (National Patent Publication No. 10-1036851) of the existing building of the existing building By reinforcing columns and beams, an object of the present invention is to provide an earthquake-proof reinforcement method for an existing building using concrete-filled steel pipe columns to increase the strength as well as the strength of the existing building columns and beams, thereby realizing excellent seismic performance.

In addition, by applying the concrete-filled steel pipe pillar as described above, the construction is simple, the air is shortened, to reduce the construction cost as no separate materials such as formwork, the existing building using the concrete-filled steel pipe pillar Another problem is to provide seismic reinforcement methods.

In addition, it is another object to provide a seismic reinforcement method of the existing building using a concrete-filled steel pipe pillar to improve the reinforcement strength by inserting the reinforcing bars into the concrete filled steel pipe pillar.

In addition, by extending the bolts connecting the pillars of the existing building and the pillars of the concrete filled steel pipe and forming a deposition part at the end thereof to improve the deposition performance of concrete to improve the integrity of the pillars of the existing building and the concrete filled steel pipe pillars, Another task is to provide a seismic reinforcing method for existing buildings using filled steel pipe columns.

The present invention, in the seismic reinforcement method of the existing building, reinforcing position selection step of selecting the position of the column and beam to be reinforced among the columns and beams of the existing building (S1); And a reinforcing step (S2) of coupling a concrete filled steel tube (CFT, Concrete Filled Steel Tube) to the selected position; the earthquake-resistant reinforcement method of the existing building using a concrete-filled steel pipe pillar, characterized in that it comprises a As a solution of

At this time, the step of selecting the reinforcement position (S1), it is preferable to select from a plurality of columns and beams for each floor of the existing pillars and beams, or the existing pillars and beams of the existing building, or the existing building.

On the other hand, the reinforcement step (S2), the drilling step (S2-) for drilling the bolt fastening groove (H1) on one end of the column 100 and the beam 200 of the existing building selected in the reinforcement position selection step (S1). One); A plate-shaped reinforcing steel plate installation step (S2-2) of installing the plate-shaped reinforcing steel plate 10 on one end of the pillar 100 and the beam 200 in which the coupling groove H1 is drilled using the bolt B; Installing the first box-shaped reinforcement steel sheet (S2) for installing the first box-shaped reinforcing steel plate 11 by welding or bolt (B) at the junction of the column 100 and the beam 200, the plate-shaped reinforcing steel plate 10 is installed (S2) -3); The second box-shaped reinforcing steel plate 12 is welded or bolted to the plate-shaped reinforcing steel plate 10 installed on the column 100 and the beam 200 except for the junction where the first box-shaped reinforcing steel plate 11 is installed. A second box-type reinforcing steel plate installation step (S2-4) to be installed; A connection step of connecting the first box-shaped reinforcing steel sheet 11 and the second box-shaped reinforcing steel sheet 12 by welding (S2-5); Concrete filling step (S2-6) for filling the concrete in the first box-shaped reinforcing steel sheet (11) and the second box-shaped reinforcing steel sheet (12); And a resin injection step (S2-7) for injecting an epoxy resin between the pillar 100 and the beam 200 and the plate-shaped reinforcing steel sheet 10 of the existing building.

In this case, the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12, the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12 is welded to the plate-shaped reinforcing steel sheet 10. The first box-shaped reinforcing steel plate 11 or the second box-shaped reinforcing steel plate 12 is bolted (B) used for coupling the column 100 and the plate-shaped reinforcement steel plate 10 of the existing building, It may extend in the direction to be combined, and may be installed by forming the deposition portion (b1) at the end of the extended bolt (B).

Here, the first box-shaped reinforcing steel plate 11 and the second box-shaped reinforcing steel plate 12 is provided with a plurality of reinforcing plates (11a) spaced a predetermined distance in the longitudinal direction, and then reinforced by inserting reinforcing bars (R) It may be.

The present invention by reinforcing the columns and beams of the existing building by using a concrete filled steel tube (CFT), which is pre- filed by the applicant of the present invention and registered (Domestic Patent Publication No. 10-1036851), Not only the strength of the columns and beams, but also the stiffness can be increased to realize excellent seismic performance. Also, by applying the concrete-filled steel pipe columns as described above, the construction is simple and the air is shortened, and additional materials such as formwork are consumed. As it is not possible to reduce the construction cost, as well as to improve the reinforcement strength, there is an effect to improve the integrity of the pillars and concrete filled steel pipe pillar of the existing building.

1 to 3 is a view showing the seismic reinforcement method of a conventional existing building
Figure 4 is a flow chart showing the seismic reinforcement method of the existing building using a concrete-filled steel pipe pillar according to an embodiment of the present invention
Figure 5 is a partial perspective view showing the seismic reinforcement method of the existing building using a concrete-filled steel pipe pillar according to an embodiment of the present invention
6a to 6d is a plan view of the reinforcing steel plate joint according to each embodiment of the present invention
7 is a front sectional view of an embodiment according to 6d above;

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

4 is a flowchart illustrating a seismic reinforcement method of an existing building using a concrete-filled steel pipe pillar according to an embodiment of the present invention, Figure 5 is a seismic reinforcement of the existing building using a concrete-filled steel pipe pillar according to an embodiment of the present invention 6A to 6D are plan views of reinforcing steel plate joints according to embodiments of the present invention, and FIG. 7 is a front sectional view of an embodiment according to 6D, and the present invention provides a step of selecting a reinforcing position (S1). And a reinforcing step (S2).

The reinforcing position selection step (S1) is a step of selecting the positions of the columns and beams to be reinforced from the columns and beams of the existing building, the external columns and beams of the existing building, or to select from the internal columns and beams of the existing building. In addition, it can be applied to select a plurality of columns and beams for each floor of the existing building.

The reinforcement step (S2) is a step of coupling a concrete filled steel tube (CFT) to the selected position, as shown in Figure 4, the drilling step (S2-1), plate-shaped reinforcement steel sheet Installation step (S2-2), the first box-shaped reinforcing steel plate installation step (S2-3), the second box-shaped reinforcing steel plate installation step (S2-4), the connection step (S2-5), concrete filling step (S2-6) And a resin injection step (S2-7).

The drilling step (S2-1), as shown in Figure 5a and 5b, bolt fastening grooves at one end of the column 100 and beam 200 of the existing building selected in the reinforcement position selection step (S1) As a step of puncturing (H1), after the puncture, the inside of the fastening groove (H1) is cleaned to remove various foreign matter.

The plate-shaped reinforcing steel plate installation step (S2-2), as shown in FIG. 5C, installs the plate-shaped reinforcing steel sheet 10 at one end of the column 100 and the beam 200 in which the fastening groove H1 is drilled. As a step, to install the plate-shaped reinforcement steel plate 10 using the bolt (B) to the pillar 100 and the beam 200 in which the fastening groove (H1) is perforated.

The first box-shaped reinforcing steel plate installation step (S2-3), as shown in Figure 5d, the first box-shaped reinforcing steel sheet (10) to the junction of the column 100 and the beam 200, the plate-shaped reinforcing steel plate 10 is installed ( 11) as a step of installing, by welding or bolt (B) is installed to the plate-shaped reinforcing steel plate 10 installed in the joint.

The second box-shaped reinforcing steel plate installation step (S2-4), as shown in Figure 5e, the second box-type on the column 100 and the beam 200, except for the joint portion in which the first box-shaped reinforcing steel plate 11 is installed As a step of installing the reinforcing steel plate 12, like the first box-shaped reinforcing steel plate 11, it is installed by welding or bolt (B) coupled to the plate-shaped reinforcing steel plate (10).

In this case, the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12, as shown in Figure 6a, the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12 To be installed by welding to the plate-shaped reinforcing steel sheet 10 or as shown in Figure 6b, both ends of the plate-shaped reinforcing steel sheet 10, the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12 ) Extends in the direction to be coupled, and the first box-shaped reinforcing steel plate 11 or the second box-shaped reinforcing steel plate 12 is installed by bolts (B) coupled to the extended portion, or as shown in Figure 6c, After closing the opening of the plate-shaped reinforcing steel plate 10 side of the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12, both ends are extended to the plate-shaped reinforcing steel sheet 10 side, and the extended portion is plate-shaped. Installed by welding to the reinforcing steel sheet 10 or As shown in 6d, the first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12 is installed by welding to the plate-shaped reinforcing steel sheet 10, but installed with the pillar 100 of the existing building The bolt B used to join the plate-shaped reinforcing steel plate 10 extends in the direction in which the first box-shaped reinforcing steel plate 11 or the second box-shaped reinforcing steel plate 12 is coupled, and ends of the extended bolt B. The vapor deposition portion b1 may be formed and installed in the portion.

At this time, the first box-shaped reinforcing steel plate 11 and the second box-shaped reinforcing steel plate 12 installed in the vertical in the above embodiment, as shown in Figure 6d and 7, the predetermined distance in the longitudinal direction After installing a plurality of reinforcing plate (11a), reinforcement (R) may be inserted and reinforced.

Here, the inserted reinforcing bar (R) may be extended in length by a conventional coupler, the end may be fixed by a conventional bolt, etc., the first box-shaped reinforcing steel sheet 11 and the second box-shaped reinforcing steel sheet ( Reinforcing bars R may be omitted depending on the installation environment of 12).

In addition, the second box-shaped reinforcement steel plate 12 installed horizontally may be replaced with an H beam, a box column, a circular column, and the like.

In this case, the first box-shaped reinforcing steel sheet 11 and the second box-shaped reinforcing steel sheet 12 is manufactured in a box shape at the factory, it is preferable to be installed using welding or bolt (B) at the construction site, the concrete filling will be described later It is preferable that an injection hole H2 for concrete injection in step S2-6 is formed.

The connecting step (S2-5) is a step of interconnecting the first box-shaped reinforcement steel sheet 11 and the second box-shaped reinforcing steel sheet 12, it is connected by welding.

The concrete filling step (S2-6) is a step of filling concrete in the first box-shaped reinforcing steel sheet 11 and the second box-shaped reinforcing steel sheet 12, and the first box-shaped reinforcing steel sheet 11 and the first uppermost portion. Most are injected through the inlet (H2) of the two box-shaped reinforcing steel sheet 12, the concrete is filled through each inlet (H2) to move. At this time, the injection hole (H2) of the second box-shaped reinforcing steel plate 12 located below it is used for confirming the injection state of the concrete and additional injection of concrete.

In addition, the injection hole (H2) is not formed on the surface of the first box-shaped reinforcing steel plate 11 is not connected to the second box-shaped reinforcing steel plate 12, the first box-shaped reinforcing steel plate 11 is located in the second box-shaped Since the injection hole H2 is formed only on the top surface of the surface where the reinforcing steel sheet 12 is not connected, the concrete filling efficiency is improved.

The resin injection step (S2-7) is a step of injecting an epoxy resin between the pillar 100 and the beam 200 of the existing building and the plate-shaped reinforcing steel sheet 10, the pillar 100 of the existing building And the gap between the beam 200 and the plate-shaped reinforcing steel plate 10.

Therefore, in order to solve the above-mentioned problems, the present invention is made by using a concrete filled steel tube (CFT), which is pre- filed by the applicant of the present invention and registered (Korean Patent Publication No. 10-1036851). By reinforcing the columns and beams of buildings, not only the strength of the existing columns and beams, but also the characteristics of concrete and reinforcing steel sheet can be used to increase the stiffness efficiently and to realize excellent seismic performance. According to the application, the construction is simple, the air is shortened, and as the separate material such as formwork is not consumed, not only the construction cost is reduced, but also the reinforcement strength is improved, and the integrity of the pillar of the existing building and the pillar of concrete filled steel pipe It can be improved.

The present invention is not limited to the above-described embodiments and the accompanying drawings, and various changes, modifications and variations may be made without departing from the scope of the present invention. Will be apparent to those of ordinary skill in the art.

100: pillar 200: beam
10: plate-shaped reinforcing steel sheet 11: first box-shaped reinforcing steel sheet
11a: reinforcing plate 12: second box-shaped reinforcing steel sheet
B: Bolt b1: Deposition part
H1: Bolting groove H2: Injection hole
R: Rebar

Claims (5)

  1. In earthquake-resistant reinforcement method of existing building,
    Reinforcing position selection step of selecting the position of the column and beam to be reinforced among the columns and beams of the existing building (S1); And
    It is configured to include; reinforcement step (S2) for applying a concrete filled steel tube (CFT, Concrete Filled steel Tube) at the selected position,
    The reinforcement step (S2),
    Drilling step (S2-1) for drilling a bolt fastening groove (H1) in one end of the column 100 and beam 200 of the existing building selected in the reinforcement position selection step (S1);
    A plate-shaped reinforcing steel plate installation step (S2-2) of installing the plate-shaped reinforcing steel plate 10 on one end of the pillar 100 and the beam 200 in which the coupling groove H1 is drilled using the bolt B;
    Installing the first box-shaped reinforcement steel sheet (S2) for installing the first box-shaped reinforcing steel plate 11 by welding or bolt (B) at the junction of the column 100 and the beam 200, the plate-shaped reinforcing steel plate 10 is installed (S2) -3);
    The second box-shaped reinforcing steel plate 12 is welded or bolted to the plate-shaped reinforcing steel plate 10 installed on the column 100 and the beam 200 except for the junction where the first box-shaped reinforcing steel plate 11 is installed. A second box-type reinforcing steel plate installation step (S2-4) to be installed;
    A connection step of connecting the first box-shaped reinforcing steel sheet 11 and the second box-shaped reinforcing steel sheet 12 by welding (S2-5);
    Concrete filling step (S2-6) for filling the concrete in the first box-shaped reinforcing steel sheet (11) and the second box-shaped reinforcing steel sheet (12); And
    Concrete-filled steel pipe pillars, characterized in that comprises a; (100) and the beam (200) of the existing building and the resin injection step (S2-7) for injecting epoxy resin between the plate-shaped reinforcement steel sheet (10) Seismic Reinforcement Method of Existing Buildings
  2. The method of claim 1,
    The reinforcement position selection step (S1),
    Exterior columns and beams of existing structures, or
    Internal columns and beams of existing structures, or
    Seismic reinforcement method of existing buildings using concrete-filled steel pipe columns, which is selected from a plurality of columns and beams for each floor of existing buildings
  3. delete
  4. The method of claim 1,
    The first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12,
    The first box-shaped reinforcing steel sheet 11 or the second box-shaped reinforcing steel sheet 12 is installed by welding to the plate-shaped reinforcing steel sheet 10,
    Extends the bolt (B) used in the coupling of the column 100 and the plate-shaped reinforcement steel plate 10 of the existing building in the direction in which the first box-shaped reinforcement steel sheet 11 or the second box-shaped reinforcing steel sheet 12 is coupled,
    Seismic reinforcement method of the existing building using a concrete-filled steel pipe pillar, characterized in that to form the deposition portion (b1) at the end of the extended bolt (B)
  5. 5. The method of claim 4,
    The first box-shaped reinforcing steel sheet 11 and the second box-shaped reinforcing steel sheet 12 is provided with a plurality of reinforcing plates 11a spaced at predetermined intervals in the longitudinal direction thereof, and then reinforcing by inserting reinforcing bars r. Seismic reinforcement for existing buildings using concrete-filled steel pipe columns
KR1020120124838A 2012-11-06 2012-11-06 Method of aseismic reinforcement for existing building structure using pre cast concrete filled steel tube KR101253519B1 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101379892B1 (en) * 2013-08-28 2014-04-01 비코비엔주식회사 Seismic retrofit of building structures using changeable steel-frame and construction method thereof
KR101379891B1 (en) * 2013-09-02 2014-04-01 비코비엔주식회사 Filled type enlargement construction structure method
KR101453407B1 (en) * 2014-04-02 2014-10-23 윤태호 Non-welding type seismic reinforcing method for column using key hole type bolt jointed double C-type steels
KR101715359B1 (en) 2016-08-10 2017-03-15 주식회사 엠에스엔지니어링 Method of aseismic reinforcement for existing building structure using concrete filled steel tube
KR101797930B1 (en) * 2017-03-29 2017-11-15 (주)힐엔지니어링 Method of aseismic reinforcement for existing building structure using concrete filled steel tube
KR101841488B1 (en) * 2016-10-13 2018-03-23 창원대학교 산학협력단 Seismic reinforcement device and method of building columns
KR20180087701A (en) 2017-01-25 2018-08-02 포엠 주식회사 Concrete Filled steel Tube of Aseismic Reinforcement and Method of Aseismic Reinforcement for Existing Building Structure using the Same
KR20190074784A (en) 2017-12-20 2019-06-28 동서대학교 산학협력단 Bundle type concrete filled steel tube column
KR102056663B1 (en) * 2019-04-24 2019-12-17 윤준서 Seismic retrofitting structure and method for exisiting buildings using cft columns
KR102069440B1 (en) 2018-07-25 2020-01-22 구태회 seismic retrofitting structure of refrigeration warehouse

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101036851B1 (en) 2011-02-16 2011-05-25 (주)상지엔지니어링건축사사무소 Manufacturing method of pre cast concrete filled steel tube and pre cast concrete filled steel tube using the smae

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101036851B1 (en) 2011-02-16 2011-05-25 (주)상지엔지니어링건축사사무소 Manufacturing method of pre cast concrete filled steel tube and pre cast concrete filled steel tube using the smae

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101379892B1 (en) * 2013-08-28 2014-04-01 비코비엔주식회사 Seismic retrofit of building structures using changeable steel-frame and construction method thereof
KR101379891B1 (en) * 2013-09-02 2014-04-01 비코비엔주식회사 Filled type enlargement construction structure method
KR101453407B1 (en) * 2014-04-02 2014-10-23 윤태호 Non-welding type seismic reinforcing method for column using key hole type bolt jointed double C-type steels
KR101715359B1 (en) 2016-08-10 2017-03-15 주식회사 엠에스엔지니어링 Method of aseismic reinforcement for existing building structure using concrete filled steel tube
KR101841488B1 (en) * 2016-10-13 2018-03-23 창원대학교 산학협력단 Seismic reinforcement device and method of building columns
KR20180087701A (en) 2017-01-25 2018-08-02 포엠 주식회사 Concrete Filled steel Tube of Aseismic Reinforcement and Method of Aseismic Reinforcement for Existing Building Structure using the Same
KR101797930B1 (en) * 2017-03-29 2017-11-15 (주)힐엔지니어링 Method of aseismic reinforcement for existing building structure using concrete filled steel tube
KR20190074784A (en) 2017-12-20 2019-06-28 동서대학교 산학협력단 Bundle type concrete filled steel tube column
KR102069440B1 (en) 2018-07-25 2020-01-22 구태회 seismic retrofitting structure of refrigeration warehouse
KR102056663B1 (en) * 2019-04-24 2019-12-17 윤준서 Seismic retrofitting structure and method for exisiting buildings using cft columns

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