KR100740512B1 - Composite beam for girder - Google Patents

Composite beam for girder Download PDF

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Publication number
KR100740512B1
KR100740512B1 KR1020060020944A KR20060020944A KR100740512B1 KR 100740512 B1 KR100740512 B1 KR 100740512B1 KR 1020060020944 A KR1020060020944 A KR 1020060020944A KR 20060020944 A KR20060020944 A KR 20060020944A KR 100740512 B1 KR100740512 B1 KR 100740512B1
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South Korea
Prior art keywords
steel
flange
plate
composite
concrete
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KR1020060020944A
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Korean (ko)
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심태영
이우종
유근우
김정호
노민용
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신성건설 주식회사
(주)대우건설
주식회사 한국교량개발연구소
한국건설기술연구원
(주) 동양구조안전기술
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/065Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web with special adaptations for the passage of cables or conduits through the web
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/10Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • 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

Abstract

A composite beam for a girder is provided to utilize the story height of a building to the maximum by passing ventilation ducts or wire tubes through penetration portions of an outer steel member, and to have an effective cross-section and to have a long span by installing a tension member on an outer steel member. The composite beam for a girder contains an outer steel member(100) provided with penetration portions(400) to penetrate ventilation ducts or wire tubes horizontally and composed of a lower flange(130) folded to have an inside space longitudinally, a web plate(120) projected upward to the top of the lower flange to have an inside space and provided with penetration plates to form penetration portions and an upper flange(110) folded from the web plate to have an inside space longitudinally, a lower column(200) formed between the penetration portions, inner concrete(300) filled in the outer steel member, and a tension member anchored on the end of the outer steel member and extended to the lower flange longitudinally.

Description

들보용 합성거더{COMPOSITE BEAM FOR GIRDER}Composite girder for beams {COMPOSITE BEAM FOR GIRDER}

도 1a, 도 1b, 도 1c는 종래의 들보용 거더들을 단면도 형태로 도시한 것이다.Figures 1a, 1b, 1c is a cross-sectional view of the conventional girders for girders.

도 2a, 도 2b, 도 2c 및 도 2d는 본 발명의 외부강재의 조립설치도 및 합성거더의 예들을 도시한 것이다.2A, 2B, 2C, and 2D show examples of the assembly installation diagram and the composite girder of the external steel of the present invention.

도 3은 도 2b에 의한 본 본 발명의 합성거더를 기둥에 설치한 상태를 도시한 것이다.Figure 3 shows a state in which the composite girder of the present invention according to Figure 2b is installed on a column.

<도면 중 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

100:외부강재 200:하부기둥100: outer steel 200: lower pillar

300:내측콘크리트 400:관통부300: inner concrete 400: through part

500:긴장재 600:내측보강판500: tension member 600: inner reinforcing plate

700:덕트 800:전선관700: duct 800: electric wire pipe

900:기둥900: pillar

본 발명은 들보용 합성거더에 관한 것이다. 더욱 구체적으로 본 발명은 건물 내부 기둥 상면 사이에 설치되는 강재와 콘크리트가 합성된 합성거더에 관한 것이다.The present invention relates to a composite girder for beams. More specifically, the present invention relates to a composite girder in which steel materials and concrete are installed between upper surfaces of pillars in a building.

종래의 건축용 들보는 기둥 사이에 설치되는 빔 형태의 부재로써, 도 1a 및 도 1b와 같이 철근콘크리트 빔(10,Reinforced Concrete Beam, RC 빔) 또는 프리스트레스트 콘크리트거더(20,Prestressed Concrete Beam, PSC 빔)의 경우, 콘크리트가 상당량 사용되는 관계로, 필연적으로 철근의 배근과 거푸집의 설치 및 해체가 수반되며, 이로 인해 많은 인력과 시간이 투입되어야 하고, 하중의 작용과 환경의 영향으로 콘크리트의 균열과 철근부식 등의 열화를 피할 수 없으며 이로 인해 유지관리가 어렵고 공용수명이 단축된다는 문제점이 있었으며, 무엇보다도 자중이 커 장지간으로 시공하기에 어려운 문제점이 있었다.As a beam-shaped member installed between columns for a conventional building beam, reinforced concrete beam (Reinforced Concrete Beam 10, RC beam) or prestressed concrete beam (PSC beam, 20) as shown in Figure 1a and 1b In the case of), a considerable amount of concrete is used, which inevitably entails installing and dismantling reinforcement and formwork of reinforcing bars, which requires a lot of manpower and time, and due to the effects of load and environment, There was a problem in that deterioration such as reinforcing steel was inevitable, and thus, it was difficult to maintain and shorten the life of the public.

나아가 이러한 RC 빔(10) 및 PSC 빔(20)은 재하하중으로 인해 빔 단면에 발생되는 인장응력 및 압축응력을 지지함에 있어서 중립축 주위의 거더 단면은 응력을 부담하는 구조적 단면으로 작용하지 않아, 재하하중 지지에 비효율적이라는 문제점이 있었다.Furthermore, the RC beam 10 and the PSC beam 20 do not act as a structural cross section that bears stress in the girder section around the neutral axis in supporting the tensile and compressive stresses generated in the beam cross section due to the loading. There was a problem of being inefficient in supporting a load.

이러한 RC 빔과 PSC 빔의 단점을 보완하기 위하여, 도 1c와 같이 내부에 형성된 RC 거더의 외부에 거푸집 겸용 보강재(31)가 둘러싼 합성빔(30)이 개발되었다.In order to compensate for the shortcomings of the RC beam and the PSC beam, as shown in FIG. 1C, a composite beam 30 having a formwork reinforcement 31 surrounded on the outside of the RC girder formed therein has been developed.

그러나 상기 합성빔(30)은 단순히 철근(32)이 배근된 RC 빔의 외부에 강재(보강재)를 둘러싼 형식으로써 내부의 콘크리트가 인장에 저항하지 못하므로, 불필요한 인장 측 콘크리트의 사용에 의해 자중이 크게 되며, 내부 인장측 보강을 위하 여 철근 배근이 필요하므로 장지간의 거더로서, 큰 상부하중을 지지하기에는 적합하지 않다는 문제점이 지적되었다.However, the composite beam 30 is simply a type surrounding the steel (reinforcement) outside the RC beam in which the reinforcing bar 32 is reinforced, so that the concrete inside does not resist the tension, and thus the self-weight is increased by using unnecessary tension-side concrete. It was pointed out that the rebar reinforcement is needed for the internal tension side reinforcement, so that it is not suitable for supporting a large upper load as a long girder.

또한 합성빔, RC 빔 및 PSC 빔에 있어 건물 내부 환기용 덕트 및 전선관 등을 설치해야 할 경우, 모두 빔 하부에 매달아 설치함에 따라 바닥판과 바닥판 사이의 천정높이가 제한될 수 밖에 없다는 문제점 때문에 보다 효율적인 천정높이를 확보할 필요성이 대두되었다.In addition, when it is necessary to install ducts and conduits for ventilation inside buildings in the synthetic beams, RC beams, and PSC beams, the ceiling height between the bottom plate and the bottom plate is inevitably limited due to the suspension hanging under the beam. There is a need to secure more efficient ceiling heights.

본 발명의 목적은 기존 교량용 빔들의 RC 빔나 PSC 빔과 같이 콘크리트를 위한 거푸집, 철근배근 작업이 불필요하여 콘크리트 부재의 유지관리가 필요 없는 들보용 합성거더를 제공하는 것이다.An object of the present invention is to provide a composite girders for beams do not need the maintenance of the concrete member because the formwork, reinforcement for the concrete, such as RC beam or PSC beam of the existing bridge beams is not necessary.

본 발명의 다른 목적은 낮은 형고 대비 지간장을 충분히 확보할 수 있되 층간높이를 최대한 확보할 수 있는 들보용 합성거더를 제공하는 것이다.Another object of the present invention is to provide a composite girder for beams that can sufficiently secure the low height compared to the height of the paper.

본 발명은 상기 기술과제를 달성하기 위하여,The present invention to achieve the above technical problem,

박스형태의 강재에 콘크리트가 충전되는 합성거더에 있어서,In the composite girder that is filled with concrete in the box-shaped steel,

양 단부 사이에 덕트를 포함한 횡방향관통부재(700,800)가 관통될 수 있도록 횡방향으로 연통된 관통부(400)를 형성시킨 외부강재(100);An outer steel material (100) having a through portion (400) connected in a lateral direction such that a transverse through member (700,800) including a duct can be penetrated between both ends;

상기 관통부(400) 사이 사이에 형성된 하부기둥부(200);A lower pillar portion 200 formed between the through portions 400;

상기 외부강재(100) 내부에 충전시킨 내측콘크리트(300); 및 An inner concrete 300 filled in the outer steel 100; And

양 단부는 상기 외부강재 단부면에서 긴장 후 정착되되, 중간부는 외부강재의 하부플랜지부에 길이방향으로 연장되도록 배치된 긴장재(500);를 포함하도록 하였다.Both ends are fixed after tension in the outer steel end surface, the middle portion of the tension member 500 disposed to extend in the longitudinal direction to the lower flange portion of the outer steel;

이하, 본 발명에 따른 들보용 합성거더를 도면에 도시된 실시예를 참조하여 상세하게 설명하기로 한다.Hereinafter, the composite girder for beams according to the present invention will be described in detail with reference to the embodiment shown in the drawings.

도 2a는 본 발명에 의한 합성거더를 구성하는 외부강재의 설치조립도, 도 2b, 도 2c 및 도 2d는 상부면에 따른 합성거더의 완성상태도이다.Figure 2a is an assembled view of the outer steel constituting the composite girder according to the present invention, Figures 2b, 2c and 2d is a completed state of the composite girder according to the upper surface.

상기 외부강재(100)는 도 2a와 같이,The outer steel 100 is as shown in Figure 2a,

하부내측공간이 길이방향으로 형성되도록 절곡형성된 하부플랜지부(130);A lower flange portion 130 bent to form a lower inner space in a longitudinal direction;

상기 하부플랜지부 상부면에 상향돌출되어 서로 마주보도록 설치되어 복부내측공간이 형성되며, 관통부구멍(121)이 연통되어 관통부(400)가 형성되도록 관통부판(122,123,124)이 복부내측공간 하부에 설치된 복부판재(120); 및Protruding upward from the upper surface of the lower flange portion is installed so as to face each other is formed in the abdominal inner space, the through-holes 121 are in communication with the through-plates 122, 123, 124 to the lower portion of the abdominal inner space to form An installed abdominal plate member 120; And

상기 복부판재로부터 상부내측공간이 길이방향으로 형성되도록 절곡형성된 상부플랜지부(110);를 포함한다.And an upper flange portion 110 bent to form an upper inner space from the abdominal plate member in a longitudinal direction.

상기 하부플랜지부(130)는 강판을 절곡하여 형성시킨 폐쇄형 하부내측공간에 긴장재(500)가 길이방향으로 배치되어 긴장 후 양 단부가 외부강재(100) 양 단부면에 정착됨에 그 특징이 있다.The lower flange portion 130 is characterized in that the tension member 500 is disposed in the longitudinal direction in the closed lower inner space formed by bending the steel plate is fixed to both end surfaces of the outer steel material 100 after the tension. .

즉, 외부강재(100)의 하부플랜지부(130) 내부에 수평 또는 포물선 형상으로 PC 강연선을 포함하는 긴장재(500)가 내부에 삽입될 수 있도록 쉬스관이 미리 설치되도록 한 상태에서 쉬스관 내부에는 PC 강연선이 삽입되어 설치될 수 있도록 하여, 추후 내측콘크리트(300)가 타설, 양생된 후, 긴장,정착됨으로써, 소요의 압축 프리스트레스가 합성거더에 도입되도록 하는 것이다. 이로써, 합성거더는 보다 효율적인 단면을 가진 상태에서 장지간으로 설계할 수 있게 된다는 장점이 발현된다.That is, the sheath pipe inside the sheath pipe in a state in which the sheath pipe is installed in advance so that the tension member 500 including the PC strand in a horizontal or parabolic shape may be inserted inside the lower flange portion 130 of the outer steel material 100. The PC strand can be inserted and installed, so that the inner concrete 300 is poured and cured later, and then tensioned and fixed, so that the required compression prestress is introduced into the composite girder. As a result, the advantage that the composite girder can be designed in the long-term with a more efficient cross section.

하부플랜지부(130)는 소정의 폭을 가지면서 길이방향으로 연장된 상태로 도시되어 있으나, 그 폭 및 길이는 변경이 가능하며, 이러한 하부플랜지부에 의하여 본 발명의 합성거더가 기둥 상면에서 안정적으로 지지될 수 있게 된다.Although the lower flange portion 130 is shown in a state extending in the longitudinal direction while having a predetermined width, the width and length can be changed, the composite girder of the present invention by the lower flange portion is stable on the upper surface of the column It can be supported by.

상기 복부판재(120)는 하부플랜지판(130) 상부면에 수직으로 상향돌출되어 복부내측공간이 형성되도록 서로 이격되어 마주보도록 설치되며, 강판 2개를 이용하여 제작하게 된다.The abdominal plate member 120 is vertically projected upwardly on the upper surface of the lower flange plate 130 so as to be spaced apart from each other so as to form an abdominal inner space, and is manufactured using two steel sheets.

이러한 복부판재(120)는 도 2a와 같이 측면하부를 절삭하여 관통부구멍(121)을 형성시키고, 양 측판(122,123)을 상기 관통부구멍(121) 측면에 용접에 의하여 형성되도록 하고, 상판(124)을 상기 관통부구멍(121) 상면에 역시 용접에 의하여 형성되도록 함으로써, 도 2b와 같이 본 발명의 관통부(400)가 형성되도록 한다.The abdominal plate member 120 cuts the lower side surface to form the through hole 121 as shown in FIG. 2A, and allows both side plates 122 and 123 to be formed on the side of the through hole 121 by welding. 124 is also formed on the upper surface of the through hole 121 by welding, so that the through part 400 of the present invention is formed as shown in FIG. 2B.

이로써, 상기 각 측판 및 상판이 관통부를 형성시키는 부재라는 의미에서 관통부판으로 지칭하며, 다양한 형상으로 형성될 수 있을 것이다.Thus, each side plate and the upper plate is referred to as a through plate in the sense of the member to form a through portion, it may be formed in various shapes.

이러한 관통부(400)에는 도 3과 같이 환기용 덕트(700) 또는 전선관(800)이 관통되는 공간 역할을 한다.The through part 400 serves as a space through which the ventilation duct 700 or the conduit 800 passes through, as shown in FIG. 3.

즉, 상기 환기용 덕트(700) 또는 전선관(800)이 종래의 경우 거더 하부에 와이어등에 의하여 매달려 설치됨으로써, 그 차지하는 공간만큼 천정거리가 낮아지기 때문에 층간 이용이 불합리하다는 문제점이 있었으나, 본 발명의 경우에는 합성거더 복부를 관통하도록 설치됨으로 층간높이 이용에 있어 매우 효율적이게 된다.That is, when the ventilation duct 700 or the conduit 800 is conventionally installed by a wire or the like under the girder, there is a problem that the use of floors is unreasonable because the ceiling distance is reduced by the space occupied by the wire. Since it is installed to penetrate the composite girder abdomen becomes very efficient in using the height of the floor.

단지 이러한 관통부(400)에는 항상 덕트 등이 삽입되지 않을 수도 있으므로 그 내부에는 도 2a와 같이 브레이싱재 또는 간격재를 포함하는 내측보강판(600)을 더 설치할 수 있도록 한다.Since only a duct or the like may not always be inserted into the through part 400, an inner reinforcing plate 600 including a bracing material or a spacer may be further installed therein as shown in FIG. 2A.

이러한 관통부(400)는 일체로 하나의 공간으로 형성될 수도 있지만, 하부기둥부(200)에 의하여 서로 이격되어 형성될 수 있으며, 바람직하게는 합성거더의 강성확보를 위하여 하부기둥부에 의하여 구분되도록 형성시킴이 바람직하다.The through part 400 may be integrally formed as a single space, but may be formed to be spaced apart from each other by the lower column part 200, and preferably divided by the lower column part to secure the rigidity of the composite girder. It is preferable to form it.

이때 복부판재(120)에 의하여 형성되는 복부내측공간에는 내측콘크리트(300)가 도 2b와 같이 충전된다.In this case, the inner concrete space formed by the abdominal plate member 120 is filled with the inner concrete 300 as shown in FIG. 2B.

상기 하부기둥부(200)는 관통부(400)을 형성시킴에 있어 복수개가 이격되어 설치되도록 함에 있어 자연스럽게 형성되는 것으로써 상기 내측콘크리트(300)가 충전될 수 있도록 할 수도 있지만, 내측콘크리트가 아닌 중공부로 형성시킬 수도 있다.The lower pillar portion 200 may be naturally formed in forming a plurality of spaced apart portions in forming the through portion 400 so that the inner concrete 300 may be charged, but not the inner concrete. It can also be made into a hollow part.

이를 위하여 하부기둥부(200) 상면에는 상측판(125)를 형성시킬 수도 있다. 또한 상측판(125)을 설치하되 우레탄, 에폭시수지 등과 같은 콘크리트와 다른 재질의 하부기둥충진재를 충전시킬 수도 있다.To this end, the upper plate 125 may be formed on the upper surface of the lower pillar 200. In addition, the upper plate 125 may be installed, but the lower pillar filler may be filled with concrete and other materials such as urethane and epoxy resin.

복부판재(120)의 상단부에는 복부판재로부터 상부내측공간이 길이방향으로 형성되도록 절곡형성된 상부플랜지부(110)가 형성된다.The upper flange portion 110 is formed at the upper end of the abdominal plate member 120 bent to form the upper inner space from the abdominal plate member in the longitudinal direction.

상기 상부플랜지부(110)는 상부를 양 쪽 모두 안쪽으로 절곡시켜 도 2b와 같이 상부중앙개구부(S1)가 형성되도록 수평연장되도록 가공되어 외부강재의 상부면 일부만이 개방되도록 할 수 있다.The upper flange portion 110 may be bent inward to both sides inward to be horizontally extended to form the upper central opening S1 as shown in FIG. 2B so that only a portion of the upper surface of the outer steel may be opened.

상기 상부중앙개구부(S1)는 내측콘크리트(300)를 타설하는 공간역할을 함과 더불어 압축강재판(140)이 내측콘크리트(300) 상측에 매입될 수 있도록하는 공간역할을 할 수 있다.The upper central opening portion S1 may serve as a space for placing the inner concrete 300 and a space for allowing the compressed steel plate 140 to be buried in the upper side of the inner concrete 300.

이러한 압축강재판(140)은 합성거더 상부에 작용하는 외력에 의한 압축응력에 대하여 저항하도록 함으로써 보다 효율적인 단면력을 가진 부재로 제작될 수 있도록 한다.The compressed steel plate 140 is to be made of a member having a more efficient cross-sectional force by resisting the compressive stress due to the external force acting on the composite girder.

이러한 압축강재판(140)은 일체판(141)의 형태로 길이방향으로 설치될 수도 있지만, 운반 및 설치의 용이성을 위하여 분할된 강재판(142)으로 설치될 수도 있다.The compressed steel plate 140 may be installed in the longitudinal direction in the form of an integral plate 141, but may be installed as a divided steel plate 142 for ease of transportation and installation.

결국 외부강재(100)는 내측콘크리트(300) 거푸집으로서 기능을 기본적으로 가지고 있지만, 내측콘크리트(300)와 합성되어 외부하중에 대하여 내측콘크리트와 일체로 저항할 수 있는 구조 부재로서 기능하게 된다. After all, the external steel 100 has a function as the inner concrete 300 formwork, but is synthesized with the inner concrete 300 to function as a structural member capable of integrally resisting the inner concrete against the external load.

이러한 기능에 의하여 합성거더의 진동, 처짐이 줄어들면서도 피로강성이 커지는 장점이 있어 이러한 장점에 의하여 본 발명의 외부강재는 외부거푸집, 외부보강재 등으로 지칭될 수 있다.By such a function, there is an advantage in that the fatigue stiffness is increased while the vibration and deflection of the composite girder are reduced, and thus, the external steel of the present invention may be referred to as an external formwork or an external reinforcement.

외부강재(100)의 내부면에는 미도시하였지만 복수의 스터드가 용접 등의 방법으로 설치되어 내측콘크리트와의 합성작용을 증대시키게 된다. Although not shown on the inner surface of the outer steel 100, a plurality of studs are installed by welding or the like to increase the synthetic action with the inner concrete.

또한 외부강재(100)의 상부플랜지(110) 상부면에는 바닥판 콘크리트와의 결합을 위하여 역시 복수의 스터드를 부착시키게 된다.In addition, a plurality of studs are attached to the upper surface of the upper flange 110 of the outer steel 100 so as to be combined with the bottom plate concrete.

도 2c는 특히 본 발명의 외부강재 상부면이 개방된 상태로 제작될 수 있음을 도시한 것으로써 상부플랜지부(110)는 복부부재로부터 헌치부로써만 형성되도록 한 것이다.2c shows that the outer steel upper surface of the present invention in particular can be manufactured in an open state, so that the upper flange portion 110 is formed only from the abdominal member as a haunch portion.

즉, 복부판재(120)의 상단부를 안쪽으로 절곡시켜 상부중앙개구부(S1)가 형성되도록 수평연장되어 형성도록 하지 않고, 복부판재(120)의 상단부를 별도 처리하지 않도록 하여 외부강재 상부면이 완전 개방된 상태로 유지되도록 하는 것이다.That is, the upper end portion of the abdominal plate member 120 is bent inward so that the horizontal extension is formed so that the upper central opening S1 is formed, and the upper end portion of the abdominal plate member 120 is not treated separately so that the upper surface of the outer steel is completely. To stay open.

도 2d는 특히 본 발명의 외부강재 상부면이 폐쇄된 상태로 제작될 수 있음을 도시한 것으로써, 상부플랜지부(110)가 헌치부를 형성하면서 상부면이 폐쇄되도록 한 것이다.Figure 2d shows that the outer surface of the outer steel of the present invention in particular can be manufactured in a closed state, the upper flange portion 110 is to make the upper surface closed while forming the haunch portion.

즉, 복부판재(120)의 상단부를 안쪽으로 연장시키되, 하부플랜지판, 복부판재 및 상부플랜지부가 폐쇄된 박스형태로 형성되도록 한 것이다. 이로써 외부강재 상부면은 폐쇄되어 있게 되며, 내측콘크리트를 타설하기 위하여 관통공을 형성시키게 된다.That is, while the upper end portion of the abdominal plate member 120 extends inward, the lower flange plate, the abdominal plate member and the upper flange portion are formed in a closed box shape. As a result, the upper surface of the outer steel is closed, thereby forming a through hole for placing the inner concrete.

도 3은 도 2b에 의한 합성거더를 양 기둥(900) 상부면에 얹어지도록 설치한 상태를 도시한 것이다. 즉,Figure 3 shows a state in which the composite girder according to Figure 2b is installed to be placed on the upper surface of both pillars (900). In other words,

보다 장지간의 합성거더를 양 기둥(900)에 설치할 수 있도록 하기 위하여 긴장재(500)가 합성거더 하부측에 배치되도록 하고 있음을 알 수 있으며, 역시 합성거더의 복부판재에 형성시킨 관통부(400)가 형성되어 있어 덕트(700) 및 전선관(800)이 관통하여 설치되어 있음을 알 수 있어 합성거더의 하부에 역시 아무런 지장물이 설치되지 않고 있음을 알 수 있다.It can be seen that the tension member 500 is to be arranged on the lower side of the composite girder in order to be able to install the composite girders between the long poles 900, and the through part 400 formed in the abdominal plate of the composite girder. Is formed so that the duct 700 and the conduit 800 is penetrated through it can be seen that no obstacles are also installed at the bottom of the composite girder.

이러한 덕트(700) 및 전선관(800)은 설비파이프로써 일예에 지나지 않으므로 여러 다른 종료의 층간 횡방향관통부재는 모두 본 발명의 관통부에 삽입 설치될 수 있다.Since the duct 700 and the conduit 800 are merely an example of a facility pipe, all of the different end layer transverse transmissive members may be inserted into the penetrating portion of the present invention.

또한 관통부(400)가 비어있는 상태로 놓여질 수 있으며, 브레이싱재인 내측보강판(600)이 삽입설치될 수 있음을 알 수 있다. In addition, the through part 400 may be placed in an empty state, and it can be seen that the inner reinforcing plate 600 which is a bracing material may be inserted and installed.

본 발명에 의하여 외부가 강재로 구성되고 그 내부에 내측콘크리트가 채워져 구성된 합성거더가 중립축의 위쪽인 압축 측에서 압축강재판이 구조적 특성에 따라 압축력을 부담하고, 중립축 하부에 위치한 긴장재가 인장력을 부담함으로써,콘크리트, 강재, 긴장재 등의 각 구성재료의 장점을 최대한으로 발휘할 수 있는 합성거더로서 작용하게 되며, 외부강재 제작 시 발생하는 자중에 의한 하중을 합성거더 하부에 설치된 긴장재를 단계별로 긴장하여 상쇄할 수 있도록 하는 경우 동일한 단면크기로도 보다 장지간의 합성거더 설치가 가능하게 된다.According to the present invention, the outer side is composed of steel and the inner side of which is filled with inner concrete composite girders on the compression side of the upper side of the neutral shaft, the compressive steel plate bears the compressive force according to the structural characteristics, the tension member located under the neutral shaft bears the tensile force By doing so, it acts as a composite girder that can maximize the advantages of each constituent material such as concrete, steel, and tension material, and offsets the tension caused by the weight generated during the manufacture of external steel by tensioning the tension material installed in the lower part of the composite girder step by step. In the case of making it possible, the composite girders between the long sections can be installed even with the same cross-sectional size.

또한 강재만으로 이루어진 강박스 거더에 비교하여 내부에 콘크리트가 충전되어 있어 소음이 적으며, 진동과 용접량이 적어 피로성능이 우수하며, 강성이 크고 국부좌굴의 위험이 적으며, 보강재가 필요 없고 부식 가능성이 낮다. 내측콘크리트가 외부강재에 싸여있어 내부콘크리트에 철근배근이 필요없으며, 균열 등 유지관리가 필요 없게 되며, 덕트를 포함한 설비파이프, 전선관등이 합성거더 복부를 관통하도록 형성되어 건물 층간 이용이 극대화 되어 시공성 및 경제성이 매우 우수한 들보용 합성거더 제작 및 시공이 가능하게 되며, 본 발명의 특성이 포함된다면 건축용 및 토목용 거더에도 본 발명이 이용될 수 있을 것이다.In addition, compared to steel box girders made of steel only, concrete is filled inside, so there is little noise, vibration and welding amount are excellent, so fatigue performance is excellent, rigidity is large, there is little risk of local buckling, no reinforcement, and there is no possibility of corrosion. Is low. Since the inner concrete is wrapped in the outer steel, there is no need for reinforcement in the inner concrete, no need for maintenance, such as cracking, and facility pipes and conduits including ducts are formed to penetrate the abdomen of the composite girder to maximize the use of buildings. And it is possible to manufacture and construct a composite beam for girders having excellent economical efficiency, and if the characteristics of the present invention is included, the present invention may be used for construction and civil girders.

이상과 같이 본 발명은 기존의 들보용 거더의 약점을 보완하고 강점을 살려 낮은 형고에 장경간이 가능하고, 초기공사비뿐만 아니라 유지관리비용이 적어 생애주기비용 측면에서도 유리한 경제적인 거더형식이며, 재료적, 역학적 장점뿐만 아니라 외관이 수려하여 심미적으로도 유리한 거더 제작 형식이 된다. 앞에서 설명되고, 도면에 도시된 본 발명의 일 실시예는 본 발명의 기술적사상을 한정하는 것으로 해석되어서는 안 된다. 본 발명의 기술분야에서 통상의 지식을 가진 자는 본 발명의 기술적 사상을 다양한 형태로 개량 변경하는 것이 가능하다. 따라서 이러한 개량 및 변경은 통상의 지식을 가진 자에게 자명한 것인 한 본 발명의 보호범위에 속하게 된다.As described above, the present invention is economical girder type that is complementary to the weakness of the existing beam girders and utilizes its strengths, and has a long span at low mold height, and is advantageous in terms of life cycle cost due to low maintenance cost as well as initial construction cost. In addition, the appearance of the girders is aesthetically advantageous, as well as its mechanical advantages. An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. Those skilled in the art of the present invention can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (8)

박스형태의 강재에 콘크리트가 충전되는 합성거더에 있어서,In the composite girder that is filled with concrete in the box-shaped steel, 양 단부 사이에 덕트를 포함한 횡방향관통부재가 관통될 수 있도록 횡방향으로 연통된 관통부를 형성시킨 외부강재; An outer steel forming a through portion communicating in a transverse direction such that a transverse through member including a duct can pass between both ends; 상기 외부강재 내부에 충전시킨 내측콘크리트; 및Inner concrete filled in the outer steel; And 양 단부는 상기 외부강재 단부면에서 긴장 후 정착되되, 중간부는 외부강재에 길이방향으로 연장되도록 배치된 긴장재;를 포함하는 것을 특징으로 하는 들보용 합성거더.Both ends are fixed after the tension in the outer steel end surface, the middle portion is a tension member disposed to extend in the longitudinal direction to the outer steel; composite girders for beams comprising a. 제 1항에 있어서, 상기 관통부는 1개 또는 하부기둥부에 의하여 구분된 복수개의 관통부로 형성되는 것을 특징으로 하는 들보용 합성거더.The composite girder for beams according to claim 1, wherein the through part is formed of a plurality of through parts separated by one or a lower pillar part. 제 1항에 있어서, 상기 외부강재는 전체형상이 I형 단면 박스형태로 형성되도록 하되,According to claim 1, wherein the outer steel is to be formed in the form of I-shaped cross-section box, the overall shape, 하부내측공간이 길이방향으로 형성되도록 절곡형성된 하부플랜지부;A lower flange portion bent to form a lower inner space in a longitudinal direction; 상기 하부플랜지부 상부면에 상향돌출되어 서로 마주보도록 설치되어 복부내측공간이 형성되며, 관통부구멍이 연통되어 관통부가 형성되도록 관통부판이 복부내측공간 하부에 설치된 복부판재; 및An abdominal plate material protruding upward from the upper surface of the lower flange part so as to face each other, and having an inner abdominal space formed therein, and a through plate disposed below the inner abdominal space such that the through hole is in communication with the through hole; And 상기 복부판재로부터 상부내측공간이 길이방향으로 형성되도록 절곡형성된 상부플랜지부;를 포함하는 것을 특징으로 하는 들보용 합성거더.And an upper flange portion bent to form an upper inner space in the longitudinal direction from the abdominal plate material. 제 3항에 있어서, 상기 상부플랜지부 상부면은The upper surface of the upper flange portion is 개방 상부면;Open top surface; 상부중앙개구부가 형성되도록 복부판재의 상단부를 안쪽으로 절곡시켜 수평연장되어 형성시킨 일부개방 상부면; 및A partially open upper surface formed by horizontally bending the upper end portion of the abdominal plate member so as to form an upper central opening; And 콘크리트 충전공이 형성된 전단면폐쇄 상부면;중 어느 하나인 것을 특징으로 하는 들보용 합성거더.Shear surface closed upper surface is formed concrete filling hole; Synthetic girder, characterized in that any one. 제 3항 또는 제 4항에 있어서, 상기 상부플랜지부 내부에 압축강재판이 길이방향으로 더 매입 설치되는 것을 특징으로 하는 들보용 합성거더.The composite girder for beams according to claim 3 or 4, wherein a compressed steel plate is further embedded in the upper flange portion in the longitudinal direction. 제 1항 내지 제 4항중 어느 한항에 있어서, 상기 관통부에는 건물 내부 설비파이프 또는 전선관을 포함하는 횡방향관통부재가 더 설치되어 합성거더에 지지되도록 설치되는 것을 특징으로 하는 들보용 합성거더.The composite girder according to any one of claims 1 to 4, wherein the through portion is further provided with a transverse through member including a facility pipe or a conduit inside the building to be supported by the composite girder. 제 2항 내지 제 4항중 어느 한항에 있어서, 상기 관통부 사이 사이에 형성된 하부기둥부 내부에는 빈 공간 또는 내측콘크리트를 포함하는 하부기둥충진재가 충전되도록 하되, 상기 빈공간으로 형성시키기 위하여 하부기둥부가 폐쇄되도록 상측판이 하부기둥부 상부측에 더 형성되는 것을 특징으로 하는 들보용 합성거더.The lower pillar portion according to any one of claims 2 to 4, wherein a lower pillar filler including an empty space or an inner concrete is filled in the lower pillar portion formed between the through portions, but the lower pillar portion is formed to form the empty space. Composite beam for beams, characterized in that the upper plate is further formed on the upper side of the lower column to be closed. 제 1항 내지 제 4항중 어느 한항에 있어서, 상기 횡방향관통부재가 설치되지 않는 관통부 내측에는 브레이싱재 또는 간격재를 포함하는 내측보강판을 더 형성시키는 것을 특징으로 하는 들보용 합성거더.The composite girder for beams according to any one of claims 1 to 4, further comprising an inner reinforcing plate including a bracing material or a spacer material inside the through part where the lateral through member is not provided.
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KR20050052040A (en) * 2003-11-28 2005-06-02 신성건설 주식회사 Composite girder for bridge and construction method
KR20060008393A (en) * 2004-07-22 2006-01-26 노윤근 Prestressed steel reinforced concrete beam using various shaped steel plates to the upper and lower flange and method for constructing bridge using the beam

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KR20000030231A (en) * 2000-02-14 2000-06-05 심태영 Bridge beam
KR20030048849A (en) * 2001-12-13 2003-06-25 (주)대우건설 System composed of asymmetric steel section with web opening and concrete
KR20040072147A (en) * 2003-02-10 2004-08-18 박영희 Method for manufacturing and connecting continuous prestressed concrete composite girder with steel plate
KR20050052040A (en) * 2003-11-28 2005-06-02 신성건설 주식회사 Composite girder for bridge and construction method
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* Cited by examiner, † Cited by third party
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KR102244674B1 (en) * 2020-09-09 2021-04-26 (주)지산개발 Precasted long-span hollow beam

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