KR100770023B1 - Connecting structure between cft column and rc slab using shear head - Google Patents

Connecting structure between cft column and rc slab using shear head Download PDF

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KR100770023B1
KR100770023B1 KR1020060046364A KR20060046364A KR100770023B1 KR 100770023 B1 KR100770023 B1 KR 100770023B1 KR 1020060046364 A KR1020060046364 A KR 1020060046364A KR 20060046364 A KR20060046364 A KR 20060046364A KR 100770023 B1 KR100770023 B1 KR 100770023B1
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South Korea
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concrete
shear
cft
steel pipe
column
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KR1020060046364A
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Korean (ko)
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이철호
송진규
정광량
김진원
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재단법인서울대학교산학협력재단
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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
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • 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
    • E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
    • 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

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

Abstract

A joint structure of a concrete filled steel tube column and a reinforced concrete flat slab using a shear head is provided to maximize merits of a CFT(concrete filled steel tube) column and merits of a joint structure of a RC(reinforced concrete) flat slab, to transfer shear force by load added on a slab between a CFT column and a floor slab and to secure sufficient safety against punching shear. A joint structure of a CFT(concrete filled steel tube) column and a RC(reinforced concrete) flat slab using a shear head is formed by installing a shear head(20) composed of a beam having the appointed length to be buried under a RC flat slab on a joint of a CFT column(10) composed of a steel tube having a hollow(12) filled with concrete(1) and a RC flat slab composed of reinforced concrete slab. The shear head is fixed to a joint(15) formed on the side of the CFT column integrally to be projected in the direction of the RC flat slab as much as the distance from the front of the CFT column to a critical section of punching shear calculated by a plan, so that the critical section of punching shear on the joint structure of the CFT column and the RC flat slab is located on the outside of an end of the shear head.

Description

전단머리를 이용한 콘크리트충전 강관기둥과 철근콘크리트 무량판의 접합구조{Connecting Structure between CFT Column and RC Slab Using Shear Head}Connecting Structure between CFT Column and RC Slab Using Shear Head}

도 1은 본 발명의 일 실시예에 따른 CFT기둥의 개략적인 사시도이다. 1 is a schematic perspective view of a CFT pillar according to an embodiment of the present invention.

도 2a 및 도 2b는 각각 도 1에 도시된 CFT기둥의 개략적인 측면도 및 평면도이다.2A and 2B are schematic side and top views, respectively, of the CFT column shown in FIG. 1.

도 3a는 복수의 층에 전단머리가 각각 구비된 본 발명에 따른 CFT기둥이 수직하게 세워져있는 상태의 측면도이다. Figure 3a is a side view of a state in which the CFT column is vertically erected in accordance with the present invention each of which is provided with shear heads in a plurality of layers.

도 3b는 도 3a에서 횡지지부재가 설치된 상태에서 최상부층을 개략적으로 도시한 사시도이다. FIG. 3B is a perspective view schematically illustrating a top layer in a state in which a horizontal support member is installed in FIG. 3A.

<도면의 주요 부분에 대한 설명>Description of the main parts of the drawing

1 : 콘크리트1: concrete

10 : 콘크리트충전 강관기둥10: concrete filled steel pipe pillar

20 : 전단머리20: shear head

30 : 횡지지부재30: lateral support member

50 : 탭50: tab

55 : 볼트55: bolt

55a : 너트55a: nuts

100 : 철근콘크리트 무량판100: reinforced concrete weightless plate

본 발명은 전단머리를 이용한 콘크리트충전 강관기둥과 철근콘크리트 무량판의 접합구조에 관한 것으로서, 콘크리트충전 강관기둥(Concrete Filled Steel Tubular Column)(이하 "CFT기둥"이라고 약칭함)과 철근콘크리트 무량판을 접합하는 구조를 형성함에 있어서, CFT기둥과 철근콘크리트 무량판(이하, "RC무량판"라고 약칭함)이 접합되는 부분에서 RC무량판의 슬래브 내에 매립되도록 소정 길이의 빔으로 이루어진 전단머리를 CFT기둥에 설치함으로써, CFT기둥과 RC무량판의 접합부에서의 펀칭전단(punching shear)에 대한 위험단면을 외측으로 더 밀어내어 펀칭전단의 주장을 확대시키고, 펀칭전단 강도를 증대시킴과 동시에 시공성 향상 및 공기 단축을 도모할 수 있는 새로운 형식의 콘크리트충전 강관기둥과 철근콘크리트 무량판의 접합구조에 관한 것이다. The present invention relates to a joint structure of a concrete-filled steel pipe pillar and a reinforced concrete flat plate using a shear head, and the concrete filled steel tubular column (hereinafter referred to as "CFT column") and reinforced concrete flat plate In forming the joining structure, the CFT column and the shear head made of a beam of a predetermined length so as to be embedded in the slab of the RC flat plate at the portion where the reinforced concrete flat plate (hereinafter referred to as "RC flat plate") is bonded By installing it in the column, it pushes out the risk section about punching shear at the junction of CFT column and RC flat plate to the outside to expand the claim of punching shear, increase the punching shear strength, and at the same time improve the workability and The present invention relates to a joint structure of a new type of concrete-filled steel pipe column and reinforced concrete flat plate that can shorten the air.

복수의 층으로 건축되는 건축물의 기둥으로서 중공의 각형 강관 내에 콘크리트를 타설하여 형성되는 CFT기둥을 이용하는 것이 주목을 받고 있다. CFT기둥을 이용하게 되면 철근조립 및 거푸집 공사를 생략할 수 있고, 시공 현장에서 해야 하 는 작업을 최소화할 수 있으며, 콘크리트와 강관의 합성작용이 발휘됨에 따라 강재량을 절감할 수 있어, 시공성의 향상, 공기단축, 기둥 크기 축소에 따른 공간활용도 증대, 내진/내풍성능 및 내화성능 등의 향상, 그리고 고층 건축물에 대한 우수한 적용성 등의 효과를 얻을 수 있게 된다. Attention is drawn to the use of a CFT column formed by pouring concrete into a hollow square steel pipe as a pillar of a building constructed of a plurality of floors. The use of CFT columns can eliminate rebar assembly and formwork, minimize the work required at the construction site, and reduce the amount of steel due to the composite action of concrete and steel pipes. The improvement of space utilization due to improvement, shortening of air, reduction of pillar size, improvement of seismic / windproof performance and fire resistance performance, and excellent applicability to high-rise buildings can be obtained.

한편, 기둥과 바닥판 슬래브를 연결함에 있어서, 시공성 향상 및 비용절감의 효과를 발휘하는 무량판 접합구조 즉, 보가 없이 바닥판 슬래브가 하중을 직접 기둥으로 전달하는 무량판 접합구조의 사용이 주목을 받고 있다. On the other hand, in connecting the column and the slab of slab, attention is paid to the use of a flat plate bonding structure that exhibits the effect of improving the constructability and cost reduction, that is, a flat plate bonding structure in which the slab slab transfers the load directly to the column without a beam. I am getting it.

따라서 위와 같은 CFT기둥과 무량판 접합구조를 결합하면 두 기술의 장점을 극대화시킬 수 있다. 그런데 이 경우, CFT기둥과 바닥판 슬래브 사이에서, 슬래브에 가해지는 하중에 의한 전단력이 확실하게 CFT기둥으로 전달하도록 함과 동시에 펀칭전단에 대해서도 안전성을 확보할 수 있도록 하여야만 한다.  Therefore, combining the above-described CFT pillar and flat plate junction structure can maximize the advantages of both technologies. In this case, however, between the CFT column and the bottom slab, the shear force due to the load applied to the slab must be reliably transmitted to the CFT column, and the safety of the punching shear must be ensured.

특히, 일반적인 무량판 접합구조에 있어서는 무량판의 슬래브 내에 배근되는 휨철근이 우선적으로 항복하게 되는 것으로 설계를 하게 되는데, 이러한 휨철근의 항복하중 이상이 작용할 경우에는 압축대의 압괴에 의해 결국 기둥 주변으로 무량판의 슬래브에 펀칭전단에 의한 펀칭파괴가 발생하게 된다. 따라서 CFT기둥과 무량판 접합구조를 결합함에 있어서, 이러한 압축대의 압괴를 지연시키는 것이 바람직하다. In particular, in the general flat plate joining structure, the design of the flexural reinforcing bars in the slab of the flat plate yields preferentially. Punching failure due to punching shear occurs in the slab of flat plate. Therefore, in combining the CFT column and the flat plate joint structure, it is desirable to delay the collapse of the compression zone.

또한, CFT기둥의 경우에는 통상 3개의 층을 하나의 단위로 시공을 하게 되는데, CFT기둥 세우기 작업 후의 시공과정에서 CFT기둥이 틀어지는 등의 안정성에 문제가 발생할 소지가 많으며 그에 따라 시공이 어려워진다. 따라서 이러한 CFT기둥 의 시공상 발생할 수 있는 문제점을 해결할 수 있는 방안을 마련하는 것이 매우 중요하다. In addition, in the case of a CFT pillar, three layers are usually constructed as one unit. In the construction process after the CFT pillar construction work, there are many problems in stability such as twisting of the CFT pillar, and thus construction becomes difficult. Therefore, it is very important to prepare a solution to solve the problems that may occur during the construction of the CFT pillar.

본 발명은 위와 같은 개념과 문제점의 인식에 기초하여 개발된 것으로서, 본 발명은 CFT기둥을 이용하여 건축물을 시공함에 있어서, 기둥-슬래브의 무량판 접합구조를 형성함으로써 CFT기둥이 가지는 장점과 무량판 접합구조가 가지는 장점을 극대화시킴과 동시에, CFT기둥과 무량판의 접합구조를 형성함에 있어서 CFT기둥과 바닥판 슬래브 사이에서 슬래브에 가하지는 하중에 의한 전단력이 확실하게 CFT기둥으로 전달하도록 하고 펀칭전단에 대해서도 충분한 안전성을 확보할 수 있도록 하는 것을 목적으로 한다. The present invention was developed on the basis of the above concept and the recognition of the problem, the present invention in the construction of the building using the CFT column, by forming a flat plate joint structure of column-slabs have the advantages and the flat plate having the CFT column While maximizing the advantages of the joint structure, the shear force due to the load applied to the slab between the CFT column and the bottom plate slab is reliably transmitted to the CFT column in forming the joint structure of the CFT column and flat plate. It aims to be able to ensure sufficient safety also.

특히, 압축대를 더욱 보강함으로써 압축대의 압괴를 지연시켜 펀칭전단 강도를 향상시키고 변형능력을 효과적으로 증진시킬 수 있도록 하는 것을 목적으로 한다. In particular, the reinforcement of the compression zone further retards the compression of the compression zone to improve the punching shear strength and effectively improve the deformation capacity.

또한 본 발명은, CFT기둥을 이용하여 복층의 건축물을 시공함에 있어서 CFT기둥이 틀어지는 등의 불안정성이 발생하는 것을 방지할 수 있도록 하는 것을 목적으로 한다. In addition, an object of the present invention is to be able to prevent the occurrence of instability, such as twisting the CFT pillar in the construction of a multi-storey building using the CFT pillar.

위와 같은 목적을 달성하기 위하여 본 발명에서는, 중공을 갖는 강관으로 이 루어지며 상기 중공 내에는 콘크리트가 타설되어 채워진 콘크리트충전 강관기둥과, 철근콘크리트 슬래브로 이루어진 철근콘크리트 무량판이 일체로 접합되는 접합구조로서, 상기 콘크리트충전 강관기둥과 상기 철근콘크리트 무량판이 접합되는 부분에서, 상기 콘크리트충전 강관기둥의 측면에는 상기 철근콘크리트 무량판내에 매립되도록 빔 부재로 이루어진 전단머리가 상기 콘크리트충전 강관기둥에 일체로 구비되는 것을 특징으로 하는 콘크리트충전 강관기둥과 철근콘크리트 무량판의 접합구조가 제공된다. In order to achieve the above object, in the present invention, it is made of a steel pipe having a hollow and the hollow concrete filled steel pipe pillars filled with concrete is poured into the hollow, reinforced concrete flat plate consisting of reinforced concrete slab as a joint structure integrally bonded In the portion where the concrete filled steel pipe pillar and the reinforced concrete flat plate are joined, a shear head made of a beam member is integrally provided in the concrete filled steel pipe pillar at the side of the concrete filled steel pipe pillar to be embedded in the reinforced concrete flat plate. Provided is a joining structure of a concrete-filled steel pipe pillar and a reinforced concrete flat plate.

또한, 본 발명에서는 구체적인 실시예로서, 상기한 구조에 더하여 복수 개의 전단머리가 상기 CFT기둥의 길이 방향을 따라 층고 간격으로 이격되어 구비되어 있는 것을 특징으로 하는 콘크리트충전 강관기둥과 철근콘크리트 무량판의 접합구조가 제공된다. In addition, in the present invention, as a specific embodiment, in addition to the above structure, a plurality of shear heads are provided spaced apart at intervals of floor height along the longitudinal direction of the CFT pillar of the concrete-filled steel tube pillar and reinforced concrete flat plate Bonding structures are provided.

이러한 본 발명에 있어서, 서로 이웃하게 설치된 상기 콘크리트충진 강관기둥들을 서로 지지할 수 있도록 하기 위하여, 상기 이웃하게 설치된 콘크리트충진 강관기둥의 전단머리간에는 빔으로 이루어진 횡지지부재가 일체로 조립 연결되어 상기 철근콘크리트 무량판 내에 매립되어 구비되며, 더 나아가, 상기 전단머리의 자유단부에는 상기 횡지지부재와의 조립 연결을 위하여, 일측은 전단머리의 단부에 고정되고, 타측은 상기 횡지지부재와 조립 결합되는 탭이 구비되는 것을 특징으로 하는 콘크리트충전 강관기둥과 철근콘크리트 무량판의 접합구조가 제공된다. In the present invention, in order to be able to support the concrete-filled steel pipe pillars installed adjacent to each other, the transverse support member made of a beam is integrally assembled and connected between the shear heads of the adjacent concrete-filled steel pipe pillars It is embedded in a concrete flat plate, and further, on the free end of the shear head, one side is fixed to the end of the shear head, and the other side is assembled and coupled to the transverse support member at the free end of the shear head. Provided is a joining structure of a concrete-filled steel pipe pillar and a reinforced concrete flat plate, characterized in that a tab is provided.

이하 도면을 참조하여 본 발명의 CFT기둥과 무량판의 접합구조를 설명한다. 도 1은 본 발명의 일 실시예에 따른 CFT기둥(10)의 개략적인 사시도이다. 도 2a 및 도 2b는 각각 도 1에 도시된 CFT기둥(10)의 개략적인 측면도 및 평면도이다. 도 2a에서 편의상 CFT기둥(10)과 접합되는 RC무량판(100)은 일점쇄선으로 도시하였으며, RC무량판(100) 내에 배근되는 철근은 도시를 생략하였다. Hereinafter, the bonding structure of the CFT pillar and the flat plate of the present invention will be described with reference to the drawings. 1 is a schematic perspective view of a CFT column 10 according to an embodiment of the present invention. 2A and 2B are schematic side and top views, respectively, of the CFT column 10 shown in FIG. 1. In FIG. 2A, the RC flat plate 100 bonded to the CFT column 10 is illustrated by a dashed line, and the reinforcing bars in the RC flat plate 100 are omitted.

본 발명에서는 도면에 도시된 것처럼, CFT기둥(10)과 RC무량판(100)이 접합되는 부분에서, CFT기둥(10)의 측면에는 철근콘크리트 슬래브로 이루어지는 RC무량판(100)내에 매립되도록 소정 길이의 빔으로 이루어진 전단머리(20)가 일체로 설치된다. In the present invention, as shown in the figure, at the portion where the CFT column 10 and the RC flat plate 100 are bonded, the side of the CFT column 10 is embedded to be embedded in the RC flat plate 100 made of reinforced concrete slab. Shear head 20 made of a beam of length is integrally installed.

구체적으로 본 발명의 일실시예에 따른 CFT기둥(10)은 중공(12)을 갖는 강관으로 이루어지며 하부의 형성된 개구를 통해 콘크리트(1)가 상향으로 가압 타설되어 채워진다. 도면에 도시된 실시예에서 상기 CFT기둥(10)은 4각형의 강관으로 이루어져 있으나, CFT기둥(10)의 단면형상은 단지 사각형에만 한정되지 않으며, 원형기둥 등 다양한 단면형상이 될 수도 있다. Specifically, the CFT column 10 according to the embodiment of the present invention is made of a steel pipe having a hollow 12 and is filled with concrete 1 being pressed upward through an opening formed in the lower portion thereof. In the embodiment shown in the figure the CFT pillar 10 is made of a steel pipe of a square, the cross-sectional shape of the CFT pillar 10 is not limited to only a rectangular, it may be a variety of cross-sectional shape, such as a circular column.

상기 전단머리(20)는 강재 빔으로 이루어져 그 일단부가 CFT기둥(10) 측면의 접합부(15)에 일체로 고정되어 RC무량판(100) 방향으로 돌출된 형태로 구비된다. 상기 CFT기둥(10)에 설치되는 상기 전단머리(20)는 도 3a에 도시된 것처럼 CFT기둥(10)과 접합되는 RC무량판(100)내에 완전히 매립된다.The shear head 20 is made of a steel beam, one end of which is integrally fixed to the junction 15 of the side of the CFT pillar 10 and provided in the form of protruding toward the RC flat plate 100. The shear head 20 installed on the CFT pillar 10 is completely embedded in the RC flat plate 100 bonded to the CFT pillar 10 as shown in FIG. 3A.

상기 전단머리(20)의 돌출길이는, 설계시 산정된 펀칭전단 강도에 따라 결정된다. 즉, 전단머리(20)를 구비하지 아니한 일반적인 보-기둥 접합구조에 대한 구조 해석 및 설계에 의하여 펀칭전단 강도 및 펀칭전단의 위험단면을 결정할 수 있 는데, 상기 전단머리(20)의 돌출길이를 CFT기둥(10)의 전면으로부터 상기 펀칭전단의 위험단면까지의 거리보다 더 크게 되도록 상기 전단머리(20)의 돌출길이를 정함으로써, 궁극적으로 본 발명의 CFT기둥(10)과 RC무량판(100) 접합구조에서의 펀칭전단 위험단면이 상기 전단머리(20)의 단부 외측에 위치하도록 하는 것이다. The protruding length of the shear head 20 is determined according to the punching shear strength calculated at design time. That is, the punching shear strength and the risky cross section of the punching shear can be determined by structural analysis and design of a general beam-column joint structure having no shear head 20. The protruding length of the shear head 20 is determined. By determining the protruding length of the shear head 20 to be greater than the distance from the front surface of the CFT column 10 to the dangerous end surface of the punching shear, ultimately, the CFT column 10 and the RC flat plate 100 of the present invention. The punching shear risk cross section in the joining structure is positioned outside the end of the shear head 20.

이와 같이, 본 발명에서는 CFT기둥(10)에 돌출된 형태의 전단머리(20)를 설치하고 이를 RC무량판(100)내에 매립되도록 함으로써 펀칭전단의 위험단면을 더 외측으로 밀어낼 수 있고, 그만큼 펀칭전단의 주장이 확대됨으로 펀칭전단에 대한 안정성이 증대되는 효과가 발휘된다. As described above, in the present invention, by installing the shear head 20 of the protruding shape to the CFT column 10 and allowing it to be embedded in the RC flat plate 100, the end surface of the punching shear can be pushed outwards, As the claim of punching shear is expanded, stability of punching shear is increased.

한편, 본 발명에 있어서, 이웃하는 CFT기둥(10)과의 사이에서 전단머리(20)간에 빔으로 이루어진 횡지지부재(30)를 연결 설치하여 각각을 지지하도록 함으로써, 각각의 CFT기둥(10)의 시공시 발생할 수 있는 시공시의 틀어짐 등의 불안정성을 해소할 수도 있다. 도 3a에는 복수의 층에 전단머리(20)가 각각 구비된 본 발명에 따른 CFT기둥(10)이 수직하게 세워져있는 상태의 측면도가 도시되어 있고, 도 3b에는 도 3a에서 횡지지부재(30)가 설치된 상태에서 최상부층을 개략적으로 도시한 사시도가 도시되어 있다. 도면에 도시된 것처럼, 본 발명에서는 서로 이웃하는 CFT기둥(10)의 전단머리(20) 사이에 빔으로 이루어진 횡지지부재(30)를 일체로 조립 연결하여, CFT기둥(10) 간의 지지구조를 형성할 수 있다. On the other hand, in the present invention, by connecting the lateral support member 30 made of a beam between the shear head 20 between the adjacent CFT pillar 10 to support each, each CFT pillar 10 It can also solve instability such as distortion during construction that may occur during construction. 3A is a side view of a state in which the CFT pillar 10 according to the present invention, in which the shear heads 20 are provided in a plurality of layers, respectively, is erected vertically, and in FIG. 3B, the lateral support member 30 is illustrated in FIG. 3A. A perspective view schematically showing the top layer is shown in which state is installed. As shown in the figure, in the present invention by integrally connecting and connecting the lateral support member 30 made of a beam between the shear head 20 of the adjacent CFT pillar 10, the support structure between the CFT pillar 10 Can be formed.

상기 횡지지부재(30)는 CFT기둥(10)들을 서로 연결하여 보강함으로써 CFT기둥(10) 세우기 작업 및 후속 시공 과정에서 CFT기둥(10)에 대한 안정성을 확보할 수 있도록 하는 기능뿐만 아니라, RC무량판(100)에 펀칭파괴가 발생하는 경우, 현 수부재로서도 기능하게 되어, 건축물의 연쇄 붕괴를 방지하게 되는 기능도 발휘하게 된다. 또한 상기 전단머리(20)와 마찬가지로 상기 횡지지부재(30)는 RC무량판(100)의 슬래브 내에 완전히 매립되어 RC무량판(100) 자체를 보강하는 기능도 발휘하게 된다. The lateral support member 30 is connected to the reinforcement of the CFT pillars 10 by reinforcing each other, as well as a function to ensure the stability of the CFT pillar 10 during the construction and subsequent construction process of the CFT pillar 10, RC When the punching break occurs in the flat plate 100, it also functions as a suspension member, thereby exhibiting a function of preventing a chain collapse of the building. In addition, similar to the shear head 20, the lateral support member 30 is fully embedded in the slab of the RC flat plate 100 to exhibit the function of reinforcing the RC flat plate 100 itself.

상기 전단머리(20)와 횡지지부재(30)를 연결하기 위해서, 전단머리(20)에 결합수단이 구비된다. 도면에 도시된 실시예에서, 상기 결합수단은 일측에 구멍(51)이 형성된 탭(50) 형태로 이루어져, 타측이 전단머리(20)의 단부에 용접되어 고정된다. 한편, 상기 탭(50)의 구멍(51)에 대응되는 위치에서 횡지지부재(30)의 단부측에도 대응 구멍(31)이 형성되어 볼트(55)와 너트(55a)에 의해 전단머리(20)와 횡지지부재(30)가 결합되어 연결된다. 위와 같은 탭(50) 형태로 이루어진 결합수단은 빔으로 이루어진 전단머리(20)와 횡지지부재(30)를 일체로 결합하여 연결하는 하나의 실시예로서, 구체적으로는 싱글쉬어탭을 사용할 수 있다. 그러나 본 발명에 있어서 상기 전단머리(20)와 횡지지부재(30)는 위에 예시한 것과 같은 탭을 이용한 방식에 의해서만 결합 연결되는 것은 아니며, 다양한 방식의 빔 연결구조에 의하여 서로 결합 연결될 수 있다. In order to connect the shear head 20 and the transverse support member 30, the shear head 20 is provided with a coupling means. In the embodiment shown in the figure, the coupling means is formed in the form of a tab 50 having a hole 51 on one side, the other side is fixed by welding to the end of the shear head 20. On the other hand, a corresponding hole 31 is also formed at the end side of the lateral support member 30 at a position corresponding to the hole 51 of the tab 50, so that the shear head 20 is formed by the bolt 55 and the nut 55a. And the lateral support member 30 are coupled to each other. Coupling means formed in the form of the tab 50 as described above as one embodiment to connect the shear head 20 and the lateral support member 30 made of a beam integrally connected, specifically, a single shear tab can be used. . However, in the present invention, the shear head 20 and the lateral support member 30 are not only connected to each other by a tab-type method as illustrated above, but may be connected to each other by various beam connection structures.

이와 같이, 본 발명에서는 CFT기둥(10)에 돌출된 형태의 전단머리(20)를 설치하고 이를 RC무량판(100) 슬래브 내에 매립되도록 함으로써 CFT기둥(10)과 RC무량판(100) 간의 견고하고 일체화된 접합구조를 이룰 수 있게 된다. 따라서 CFT기 둥(10)과 RC무량판(100) 사이에서 RC무량판(100)에 가하지는 하중에 의한 전단력이 확실하게 CFT기둥(10)으로 전달되도록 할 수 있으며, CFT기둥(10)이 가지고 있는 장점들과 RC무량판(100) 접합구조가 가지고 있는 장점들이 극대화된 보-기둥 접합구조를 이룰 수 있게 된다.  As described above, in the present invention, the shear head 20 having a protruding shape is installed in the CFT pillar 10, and the burying head 20 is embedded in the slab of the RC flat plate 100. And an integrated joint structure can be achieved. Therefore, the shear force due to the load applied to the RC flat plate 100 between the CFT column 10 and the RC flat plate 100 can be surely transmitted to the CFT column 10, and the CFT column 10 is Advantages and advantages of the RC flat plate (100) bonding structure can be achieved to maximize the beam-column joint structure.

특히, 본 발명에서는 CFT기둥(10)에 설치된 전단머리(20)에 의하여 펀칭전단의 위험단면을 더 외측으로 밀어낼 수 있고, 그만큼 펀칭전단의 주장이 확대됨으로 펀칭전단에 대한 안정성이 증대되는 효과가 발휘된다. In particular, in the present invention, by the shear head 20 installed in the CFT column 10, the risk cross section of the punching shear can be pushed outwards, and the claim of the punching shear is expanded so that the stability of the punching shear is increased. Is exerted.

또한, CFT기둥의 내부에 콘크리트를 충전할 때, CFT기둥 내에 스티프너가 없어도 되므로 하부압입에 의한 타설뿐만 아니라 상부타설도 가능하여 시공성을 향상시킬 수 있다. In addition, when filling the concrete inside the CFT pillar, there is no need for a stiffener in the CFT pillar, so that not only the casting by the bottom press but also the upper casting is possible, thereby improving the workability.

한편, 본 발명에 있어서, 이웃하는 CFT기둥(10)과의 사이에서 전단머리(20)간에 빔으로 이루어진 횡지지부재(30)를 연결 설치하여 각각을 지지하도록 함으로써, 각각의 CFT기둥(10)의 시공시 발생할 수 있는 시공시의 틀어짐 등의 불안정성을 해소할 수도 있다. 즉, 상기 횡지지부재(30)에 의하여 CFT기둥(10)들을 서로 연결하여 보강함으로써 CFT기둥(10) 세우기 작업 및 후속 시공 과정에서 CFT기둥(10)에 대한 안정성을 확보할 수 있게 될 뿐만 아니라, RC무량판(100)에 펀칭파괴가 발생하는 경우에도 건축물의 연쇄 붕괴를 방지할 수 있으며, 상기 횡지지부재(30)에 의하여 RC무량판(100) 자체를 더욱 견고하게 보강할 수도 있게 되는 효과도 발휘된다. On the other hand, in the present invention, by connecting the lateral support member 30 made of a beam between the shear head 20 between the adjacent CFT pillar 10 to support each, each CFT pillar 10 It can also solve instability such as distortion during construction that may occur during construction. That is, by connecting and reinforcing the CFT pillars 10 by the lateral support member 30 as well as to ensure the stability of the CFT pillar 10 during the construction work and subsequent construction of the CFT pillar 10 as well as In addition, even when a punching break occurs in the RC flat plate 100, it is possible to prevent a chain collapse of the building, and the RC flat plate 100 may be more firmly reinforced by the lateral support member 30. The effect is also demonstrated.

특히, 위와 같은 횡지지부재(30)를 사용하여 CFT기둥(10)의 시공 중 안정성 을 확보할 수 있게 되므로, 종래와 같은 버팀재, 가새 등의 추가적인 가설부재를 설치할 필요가 없으며 따라서 이러한 가설부재 설치에 따른 공사비를 절감할 수 있음은 물론 시공상의 장애도 없앨 수 있으며 현저한 공기단축효과를 달성할 수 있게 된다. In particular, it is possible to ensure the stability during the construction of the CFT pillar 10 by using the lateral support member 30 as described above, there is no need to install additional temporary members such as braces, braces, etc. Therefore, such a temporary member Not only can the construction cost of installation be reduced, but also the construction obstacles can be eliminated, and a significant air shortening effect can be achieved.

이러한 본 발명에 따른 접합구조는 초고층 주상복합 건물이나 아파트의 시공에서도 매우 유용하게 활용된다. The joint structure according to the present invention is very useful in the construction of high-rise residential buildings or apartments.

Claims (4)

중공(12)을 갖는 강관으로 이루어지며 상기 중공(12) 내에는 콘크리트(1)가 타설되어 채워진 콘크리트충전 강관기둥(10)과, 철근콘크리트 슬래브로 이루어진 철근콘크리트 무량판(100)이 일체로 접합되는 접합구조로서, Steel pipe having a hollow (12) and the inside of the hollow 12 is a concrete filled steel pipe pillar (10) filled with the concrete (1) is poured and the reinforced concrete flat plate (100) consisting of reinforced concrete slab integrally bonded As a joining structure, 상기 콘크리트충전 강관기둥(10)과 상기 철근콘크리트 무량판(100)이 접합되는 부분에서, 상기 콘크리트충전 강관기둥(10)의 측면에는 상기 철근콘크리트 무량판(100)내에 매립되도록 빔 부재로 이루어진 전단머리(20)가 상기 콘크리트충전 강관기둥(10)에 일체로 구비되는 것을 특징으로 하는 콘크리트충전 강관기둥(10)과 철근콘크리트 무량판(100)의 접합구조. At the portion where the concrete filled steel pipe column 10 and the reinforced concrete flat plate 100 are joined, the side of the concrete filled steel pipe pillar 10 is a shear made of a beam member to be embedded in the reinforced concrete flat plate 100 Joining structure of the concrete-filled steel pipe pillar 10 and the reinforced concrete flat plate 100, characterized in that the head 20 is integrally provided in the concrete-filled steel pipe pillar (10). 제1항에 있어서,The method of claim 1, 복수 개의 전단머리(10)가 상기 CFT기둥(10)의 길이 방향을 따라 층고 간격으로 이격되어 구비되어 있는 것을 특징으로 하는 콘크리트충전 강관기둥(10)과 철근콘크리트 무량판(100)의 접합구조. Joining structure of the concrete-filled steel pipe pillar (10) and the reinforced concrete weightless plate (100), characterized in that a plurality of shear heads 10 are spaced apart at intervals along the longitudinal direction of the CFT column (10). 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 서로 이웃하게 설치된 상기 콘크리트충진 강관기둥(10)들을 서로 지지할 수 있도록 하기 위하여, 상기 이웃하게 설치된 콘크리트충진 강관기둥(10)의 전단머리(20)간에는 빔으로 이루어진 횡지지부재(30)가 일체로 조립 연결되어 상기 철근콘크리트 무량판(100) 내에 매립되어 구비되어 있는 것을 특징으로 하는 콘크리트충전 강관기둥(10)과 철근콘크리트 무량판(100)의 접합구조. In order to support the concrete-filled steel pipe pillars 10 installed next to each other, the transverse supporting members 30 made of beams are integrated between the shear heads 20 of the concrete-filled steel pipe pillars 10 installed adjacent to each other. Joining structure of the concrete-filled steel pipe pillar 10 and the reinforced concrete weightless plate 100, characterized in that the assembly is connected to be embedded in the reinforced concrete weightless plate 100. 제3항에 있어서,The method of claim 3, 상기 전단머리(20)의 자유단부에는 상기 횡지지부재(30)와의 조립 연결을 위하여, 일측은 전단머리(20)의 단부에 고정되고, 타측은 상기 횡지지부재(30)와 조립 결합되는 탭(50)이 구비되는 것을 특징으로 하는 콘크리트충전 강관기둥(10)과 철근콘크리트 무량판(100)의 접합구조. The free end of the shear head 20 for the assembly connection with the lateral support member 30, one side is fixed to the end of the shear head 20, the other side tab is assembled and assembled with the lateral support member 30 Joining structure of the concrete-filled steel pipe pillar (10) and the reinforced concrete flat plate (100), characterized in that provided (50).
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KR100829354B1 (en) 2007-06-22 2008-05-22 재단법인서울대학교산학협력재단 Rebar arrangement and anchorage structure of cft column to rc flat plate having shear head
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KR20220059162A (en) 2020-11-02 2022-05-10 삼성물산 주식회사 Formwork-integrated crossbeam connection structure and construction method of form-integrated crossbeam using the same
KR20220065277A (en) 2020-11-13 2022-05-20 삼성물산 주식회사 Crossbeam connection structure of concrete filled column and method of connecting concrete filled column and crossbeam using the same
KR20220117524A (en) 2021-02-17 2022-08-24 삼성물산 주식회사 Connection structure of steel embedded composite crossbeam and beam, and construction method of structure using the same
KR20220133421A (en) 2021-03-25 2022-10-05 삼성물산 주식회사 Concrete-filled pillars capable of separating upper and lower layers and a method for separating upper and lower layers using the same
KR20220144190A (en) 2021-04-19 2022-10-26 삼성물산 주식회사 Rotating form-integrated crossbeam connection structure and connection method of crossbeam using the same

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