KR101504246B1 - Steel frame structure - Google Patents

Steel frame structure Download PDF

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Publication number
KR101504246B1
KR101504246B1 KR20140093882A KR20140093882A KR101504246B1 KR 101504246 B1 KR101504246 B1 KR 101504246B1 KR 20140093882 A KR20140093882 A KR 20140093882A KR 20140093882 A KR20140093882 A KR 20140093882A KR 101504246 B1 KR101504246 B1 KR 101504246B1
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South Korea
Prior art keywords
steel
vertical
steel frame
joint
lower flange
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KR20140093882A
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Korean (ko)
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박영배
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(주)청우구조안전기술
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Priority to KR20140093882A priority Critical patent/KR101504246B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
    • E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2415—Brackets, gussets, joining plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2418—Details of bolting
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2448—Connections between open section profiles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452—H- or I-shaped

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The present invention relates to a steel frame structure with a reinforced end and a construction method thereof. The present invention is to improve joint efficiency and reduce the amount of a joint plate used to connect the steel frame structure by partially cutting lower flanges of both steel frames at a joint portion of the steel frame structure reinforced by a reinforced beam. To this end, a lower portion of a steel beam (10) of a H-shape, of which an upper flange (11) and a lower flange (12) are integrally connected to each other by a vertical web (13), is welded to a reinforcing beam (20) of a T-shape having a vertical web (23) and a lower flange (22) for the purpose of structure reinforcement, thereby forming a steel frame structure. The steel frame structures are connected to each other by a vertical joint plate (30) and a horizontal joint plate (40). At a joint portion of the steel frame structures, the lower flange (12) of the steel beam (10) is cut along a give length to form a cut portion (12′). The vertical web (13) of the steel beam (10) and the vertical web (23) of the reinforcing beam (20) are connected to each other on each surface by the single vertical joint plate (30).

Description

단부 보강형 철골구조물{STEEL FRAME STRUCTURE}{STEEL FRAME STRUCTURE}

본 발명은 철골구조물에 관한 것으로서, 더욱 상세하게는 철골구조물의 시공과정에서 보 구조물의 단부 보강에 필요한 물량을 최소화 함과 함께 작업효율을 향상시키기 위한 단부 보강형 철골구조물 및 그 시공방법에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a steel structure, and more particularly, to an end-reinforced steel structure for minimizing the amount of water required for reinforcing an end portion of a steel structure during a steel structure construction process, .

일반적으로, 건축물의 뼈대를 이루는 철골구조물은 철골기둥에 보 및 거더를 접합하여 철골골조를 완성하게 된다.Generally, a steel structure constituting a skeleton of a building is completed by joining a beam and a girder to a steel column.

특히, 양측 철골기둥을 수평으로 연결하는 형태로 시공되는 철골보 구조물은 철골기둥과의 접합부위 보강이 이루어지게 된다.Especially, the steel frame structure which is constructed by horizontally connecting the two steel columns is reinforced at the joining area with the steel column.

즉, 도 1 내지 도 4에서 나타내어지는 바와 같이, 철골기둥(1)에 H빔 형태의 철골보(2)가 수평으로 연결 구성되며, 철골보(2)의 양단부에는 T형빔 형태의 보강빔(3)이 접합 구성되어짐과 함께 다수의 수직 및 수평접합플레이트(4,5)가 볼트에 의한 체결이 이루어지게 된다.
또한, 이러한 철골 접합구조는 특허등록 제996604호의 선행기술을 통해서도 확인되어질 수 있게 된다.1 to 4, a steel beam 2 in the form of an H beam is horizontally connected to a steel column 1, and a reinforcing beam 3 in the form of a T beam is attached to both ends of the steel beam 2, And a plurality of vertical and horizontal bonding plates 4 and 5 are fastened by bolts.
In addition, such a steel-frame joint structure can be confirmed through the prior art of Patent Registration No. 996604.

그러나, 이러한 종래 기술에서는 철골보(2)의 양단 연결을 위한 접합플레이트(4,5) 및 볼트가 과다하게 소요되며, 볼트 체결을 위한 볼트공 작업을 다수의 개소에 실시해야 함으로 작업시간 및 비용이 증대되어지는 문제점이 있었다.
However, in this conventional technique, the joint plates (4, 5) for connecting both ends of the steel beam 2 and the bolts are excessively required, and the bolt holes for bolt fastening must be performed at a plurality of locations, There is a problem that it is increased.

본 발명은 상기한 종래 기술에서의 문제점을 개선하기 위해 제안된 것으로서, 철골기둥과의 접합이 이루어지는 철골보의 양단부의 접합 시공과정에서 접합플레이트를 포함하는 재료의 물량을 최소화함과 함께 시공비용을 절감시킬 수 있도록 하는데 목적이 있다.
The present invention has been proposed in order to solve the problems of the prior art described above, and it is an object of the present invention to minimize the amount of materials including a joint plate in the process of joining both end portions of a steel beam to be joined to a steel column, To be able to do so.

상기 목적을 이루기 위한 본 발명은, 상부플렌지와 하부플렌지가 수직웨브에 의해 일체로 연결된 구조를 이루는 H빔 형태의 철골보 하부에 구조 보강을 위해 수직웨브와 하부플렌지로 구성되는 T형빔 형태의 보강빔이 용접 구성된 철골구조물이 상호 수직 접합플레이트 및 수평 접합플레이트에 의해 접합되어지는 단부 보강형 철골구조물에 있어서, 상기 철골구조물 상호간에 접합이 이루어지는 접합부위에서는 철골보의 하부플렌지가 일정길이로 절개된 절개부를 형성함으로서, 철골보의 수직웨브와 보강빔의 수직웨브는 각 면에서 단일의 수직 접합플레이트에 의해 접합 연결이 이루어짐을 특징으로 한다.
In order to achieve the above object, the present invention provides a T-beam type reinforcing beam including a vertical web and a lower flange for reinforcement of structure in an H beam type steel beam lower part having a structure in which an upper flange and a lower flange are integrally connected by a vertical web, Wherein the welded steel structure is welded to each other by a vertical joint plate and a horizontal joint plate, wherein a lower flange of the steel frame is cut at a predetermined length on a joint where joining is performed between the steel frame structures, The vertical web of the steel beam and the vertical web of the reinforcing beam are characterized in that the joint connection is made by a single vertical joint plate on each side.

이러한 본 발명은, 보강빔의 보강이 이루어진 철골구조물의 접합부위에서 양측 철골보의 하부플렌지 부위를 일부 절개시킴으로서 철골구조물의 접합을 위한 접합플레이트 사용량을 절감시킴과 함께 접합효율이 개선되는 효과를 나타내게 된다.
In the present invention, the lower flange portions of the steel steel beams are partially cut on the joining portion of the steel structure reinforced by the reinforcing beam, thereby reducing the amount of joining plate used for joining the steel structure and improving joining efficiency.

도 1은 종래 일 예에 따른 철골구조물 접합부 정면 구조도.
도 2는 종래 철골구조물 접합부 단면 구조도.
도 3은 종래 일 예에 따른 철골구조물 접합부 사시도.
도 4는 종래 일 예에 따른 철골구조물 접합부 분리도.
도 5는 본 발명의 일 실시 예에 따른 철골구조물 접합부 정면 구조도.
도 6은 본 발명의 철골구조물 접합부 단면 구조도.
도 7은 본 발명의 철골구조물 접합부 사시도.
도 8은 본 발명의 철골구조물 접합부 분리도.
도 9는 본 발명의 다른 실시 예에 따른 수직 접합플레이트 정면 구조도.
도 10은 본 발명의 다른 실시 예에 따른 수직 접합플레이트 설치 상태도.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front structural view of a steel structure joint according to a conventional example; FIG.
2 is a cross-sectional structural view of a conventional steel structure joint.
3 is a perspective view of a steel structure joint according to a conventional example;
4 is a sectional view of a steel structure joint according to a conventional example;
5 is a front structural view of a steel structure joint according to an embodiment of the present invention.
6 is a cross-sectional structural view of a steel structure joint of the present invention.
7 is a perspective view of a steel structure joint of the present invention.
8 is a sectional view of a steel structure joint of the present invention.
9 is a front view of a vertical joint plate according to another embodiment of the present invention.
FIG. 10 is a state in which a vertical bonding plate is installed according to another embodiment of the present invention. FIG.

이하, 본 발명의 구체적인 실시 예를 첨부 도면을 참조하여 상세히 살펴보기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

먼저, 본 발명의 일 실시 예에 따른 단부 보강형 철골구조물 구조를 도 5 내지 도 8을 통해 살펴보면, 상부플렌지(11)와 하부플렌지(12)가 수직웨브(13)에 의해 일체로 연결된 구조를 이루는 H빔 형태의 철골보(10) 하부에 구조 보강을 위해 수직웨브(23)와 하부플렌지(22)로 구성되는 T형빔 형태의 보강빔(20)이 용접 구성된 철골구조물이 상호 수직 접합플레이트(30) 및 수평 접합플레이트(40)에 의해 접합되어지는 단부 보강형 철골구조물에 있어서, 상기 철골구조물 상호간에 접합이 이루어지는 접합부위에서는 철골보(10)의 하부플렌지(12)가 일정길이로 절개된 절개부(12')를 형성함으로서, 철골보(10)의 수직웨브(13)와 보강빔(20)의 수직웨브(23)는 각 면에서 단일의 수직 접합플레이트(30)에 의해 접합 연결이 이루어지게 된다.5 to 8, a structure in which an upper flange 11 and a lower flange 12 are integrally connected to each other by a vertical web 13 will be described with reference to FIGS. A reinforcing beam 20 in the form of a T beam formed by a vertical web 23 and a lower flange 22 is welded to the lower portion of the H beam type steel beam 10 to reinforce the structure. ) And a horizontal joint plate (40), wherein the lower flange (12) of the steel beam (10) is cut at a predetermined length on a joint portion where the steel frame structures are joined to each other, The vertical web 13 of the steel beam 10 and the vertical web 23 of the reinforcing beam 20 are joined together by a single vertical joint plate 30 on each side .

즉, 수직 접합플레이트(30)는 수직웨브(13,23)의 전면 및 후면에 각각 1개의 수직 접합플레이트(30)에 의한 접합 연결이 이루어지게 되고, 철골보(10)의 하부플렌지(12)에서는 수평 접합플레이트(40)에 의한 접합이 이루어지지 않는 것을 확인할 수 있다.That is, the vertical joint plates 30 are connected to the front and rear surfaces of the vertical webs 13 and 23 by one vertical joint plate 30, respectively. In the lower flange 12 of the steel beam 10, It can be confirmed that the joining by the horizontal joining plate 40 is not performed.

도면 중 미설명 부호 50은 지면에 수직으로 세우져 설치되는 철골기둥을 나타낸다In the drawing, reference numeral 50 denotes a steel column vertically installed on the ground

이와 같은 구조를 이루는 본 발명 단부 보강형 철골구조물의 시공과정을 살펴보기로 한다.Hereinafter, a construction process of the end portion reinforced steel structure of the present invention will be described.

본 발명의 철골구조물은 H빔 형태의 철골보(10)와 T형빔 형태의 보강빔(20)을 용접하여 일체로 제작함에 있어서, 철골기둥(50)측에 구성된 철골구조물과 접합이 이루어지는 단부의 양측 하부플렌지(12)를 일정 길이 절개하여 절개부(12')를 형성시키게 된다.The steel structure according to the present invention is manufactured by welding an H beam type reinforcing beam 10 and a T beam type reinforcing beam 20 integrally to each other so that both sides of the end portion where the steel frame structure connected to the steel column 50 is joined The lower flange 12 is cut to a predetermined length to form the cutout 12 '.

그리고, 이러한 절개부(12')를 형성시킴으로 인해 철골보(10)와 보강빔(20) 상호간에 간섭이 이루어지던 하부플렌지(12) 부위가 제거됨으로서 양측 수직웨브(13,23)가 하나의 수직 접합플레이트(30)에 의해 연결이 이루어질 수 있게 된다.By forming the cutout portions 12 ', the portions of the lower flange 12 where the steel beam 10 and the reinforcing beam 20 are interfered with each other are removed so that the two vertical webs 13 and 23 are separated from each other by one vertical So that the connection can be made by the bonding plate 30.

따라서, 수직웨브(13,23)의 전면과 배면에 각각 하나씩 총 2개의 수직 접합프레이트(30)가 사용되어 볼트 체결되어지며, 수평 접합플레이트(40)는 철골보(10)의 상부플렌지(11)와 보강빔(20)의 하부플렌지(22) 부위에만 사용이 이루어지고, 철골보(10)의 하부플렌지(12) 부위에는 적용될 필요가 없게 된다.The horizontal joining plate 40 is joined to the upper flange 11 of the steel frame 10 by means of bolts which are fastened together by using two vertical joining plates 30 respectively on the front and back surfaces of the vertical webs 13, And the lower flange 22 of the reinforcing beam 20 and is not required to be applied to the lower flange 12 of the steel beam 10.

따라서, 종래에 비해 수직 및 수평 접합플레이트 및 체결볼트의 사용량이 절감되어질 수 있게 되어 시공이 보다 용이하게 이루어짐과 함께 시공비용을 절감할 수 있는 효과를 나타내게 된다.
Accordingly, the amount of use of the vertical and horizontal bonding plates and fastening bolts can be reduced as compared with the prior art, so that the construction can be facilitated and the construction cost can be reduced.

한편, 도 9 및 도 10은 본 발명의 다른 실시 예에 따른 수직 접합플레이트(30) 구조를 나타낸 것으로서, 수직 접합플레이트(30)에는 양측 하부플렌지(12)가 삽입되어질 수 있는 플렌지 삽입홈(31)이 형성된 것을 확인할 수 있다.9 and 10 illustrate the structure of the vertical joint plate 30 according to another embodiment of the present invention. The vertical joint plate 30 is provided with flange insertion grooves 31 ) Is formed.

이와 같은 구조를 이루게 되면, 수직 접합플레이트(30)의 접합 시공시 양측 하부플렌지(12)의 일단부가 플렌지 삽입홈(31)에 삽입. 지지되는 상태를 이루게 됨으로서 철골보(10) 상호간의 접합효율을 향상시키는 이점을 나타내게 된다.
With this structure, one end of each of the lower flanges 12 is inserted into the flange insertion groove 31 when the vertical joint plate 30 is joined. So that the joining efficiency between the steel bars 10 is improved.

그리고, 상기에서 본 발명의 특정한 실시 예가 설명 및 도시되었지만 본 발명의 철골구조물 시공 구조가 당업자에 의해 다양하게 변형되어 실시될 수 있음은 자명한 일이다.While specific embodiments of the invention have been illustrated and described above, it will be appreciated that the steel structure construction of the present invention can be implemented in various ways by those skilled in the art.

예를 들면, 상기 실시 예에서는 철골보의 철골기둥의 접합부위에 대한 구조가 설명 및 도시되었으나, 본 발명은 철골보 상호간의 접합부위에도 적용되어질 수 있게 된다.For example, in the above-described embodiment, the structure of the steel column on the joining portion of the steel column is described and shown, but the present invention can be applied on the joining portion between steel bars.

따라서, 이와 같은 변형된 실시예들은 본 발명의 기술적 사상이나 범위로부터 개별적으로 이해되어져서는 안되며, 이와 같은 변형된 실시 예들은 본 발명의 첨부된 특허청구범위 내에 포함된다 해야 할 것이다.
Therefore, it should be understood that such modified embodiments should not be understood individually from the technical spirit and scope of the present invention, and such modified embodiments should be included in the appended claims of the present invention.

10 : 철골보 11 : 상부플렌지
12,22 : 하부플렌지 12': 절개부
13,23 : 수직웨브 20 : 보강빔
30 : 수직 접합플레이트 40 : 수평 접합플레이트
50 : 철골기둥10: steel frame 11: upper flange
12, 22: Lower flange 12 ': Cutting section
13,23: vertical web 20: reinforcing beam
30: vertical bonding plate 40: horizontal bonding plate
50: Steel column

Claims (5)

상부플렌지(11)와 하부플렌지(12)가 수직웨브(13)에 의해 일체로 연결된 구조를 이루는 H빔 형태의 철골보(10) 하부에 구조 보강을 위해 수직웨브(23)와 플렌지(22)로 구성되는 T형빔 형태의 보강빔(20)이 용접 구성된 철골구조물이 상호 수직 접합플레이트(30) 및 수평 접합플레이트(40)에 의해 접합되어지는 단부 보강형 철골구조물에 있어서,
상기 철골구조물 상호간에 접합이 이루어지는 접합부위에서는 철골보(10)의 하부플렌지(12)가 일정길이로 절개된 절개부(12')를 형성함으로서, 철골보(10)의 수직웨브(13)와 보강빔(20)의 수직웨브(23)는 각 면에서 단일의 수직 접합플레이트(30)에 의해 접합 연결이 이루어짐을 특징으로 하는 단부 보강형 철골구조물.A vertical web 23 and a flange 22 are fixed to the lower portion of the steel beam 10 in the form of an H beam in a structure in which the upper flange 11 and the lower flange 12 are integrally connected by the vertical web 13 Reinforced steel structure in which a reinforcing beam (20) welded in the form of a T beam is welded and joined together by a vertical joint plate (30) and a horizontal joint plate (40)
The lower flange 12 of the steel beam 10 is formed with a cutout portion 12 'having a predetermined length so that the vertical web 13 of the steel beam 10 and the reinforcing beam 12' Characterized in that the vertical webs (23) of the reinforcing bars (20) are joined together by means of a single vertical joining plate (30) on each side. 청구항 1에 있어서,
상기 수직 접합플레이트(30)는 수직웨브(13,23)의 전면 및 후면에 각각 1개의 수직 접합플레이트(30)에 의한 접합 연결이 이루어짐을 특징으로 하는 단부 보강형 철골구조물.The method according to claim 1,
Wherein the vertical joining plate (30) is joined to the front and rear surfaces of the vertical webs (13, 23) by one vertical joining plate (30). 청구항 1에 있어서,
상기 철골보(10)의 하부플렌지(12)에서는 수평 접합플레이트(40)에 의한 접합이 이루어지지 않는 것을 특징으로 하는 단부 보강형 철골 구조물.The method according to claim 1,
Wherein the lower flange (12) of the steel beam (10) is not bonded by the horizontal joining plate (40). 청구항 1 내지 청구항 3중 어느 한 항에 있어서,
상기 수직 접합플레이트(30)에는 양측 하부플렌지(12)가 삽입되어질 수 있는 플렌지 삽입홈(31)이 형성된 것을 특징으로 하는 단부 보강형 철골 구조물.The method according to any one of claims 1 to 3,
Wherein the vertical joint plate (30) is formed with a flange insertion groove (31) through which the lower side flanges (12) can be inserted. 삭제delete
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KR101642420B1 (en) 2016-03-09 2016-07-26 제이비비젼중공업주식회사 A steel frame structure
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KR102108335B1 (en) 2019-11-25 2020-05-13 이큐구조엔지니어링(주) Composite Steel Structure with Seismic Performance Joint
KR102215144B1 (en) * 2020-09-04 2021-02-10 태영강건(주) Steel frame of beam reinforced with steel pipe and concrete composite column and steel plate sleeve and its construction method
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