KR20010078528A - Steel joint method of reinforced concrete columns and preflex beams - Google Patents

Steel joint method of reinforced concrete columns and preflex beams Download PDF

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Publication number
KR20010078528A
KR20010078528A KR1020000000812A KR20000000812A KR20010078528A KR 20010078528 A KR20010078528 A KR 20010078528A KR 1020000000812 A KR1020000000812 A KR 1020000000812A KR 20000000812 A KR20000000812 A KR 20000000812A KR 20010078528 A KR20010078528 A KR 20010078528A
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South Korea
Prior art keywords
preflex
column
steel
joint
reinforced concrete
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KR1020000000812A
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Korean (ko)
Inventor
이원호
문정호
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이원호
문정호
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Priority to KR1020000000812A priority Critical patent/KR20010078528A/en
Publication of KR20010078528A publication Critical patent/KR20010078528A/en

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Classifications

    • 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
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/30Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
    • 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
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • E04B2001/2415Brackets, gussets, joining plates

Abstract

PURPOSE: A method for rigidly joining steel concrete and a preflex composite beam is provided to safely and economically construct the preflex composite beam, to integrate a beam-column joint, and to reduce the amount of members by fixing both ends of the preflex beam. CONSTITUTION: A SB(Steel Bracket) type joint method includes the steps of constructing a cross-shaped steel-frame beam or T-shaped steel-frame beam at a joint in joining a preflex beam(1) and a RC(Reinforced Concrete) column(2), and connecting the preflex beam after a column concrete is set. An EC(Erection Column) type joint method includes the steps of constructing an erection steel column and the preflex beam, and installing a column and a bottom concrete slab, so that the strength of the joint is increased. An EB(Embedded Beam) type joint method uses a shear connector and a hook bar, or uses the shear connector by welding a steel plate weld at the end of the preflex beam.

Description

철근콘크리트 기둥과 프리플렉스 보의 강접합 방식{.}Steel Joint Method of Reinforced Concrete Columns and Preflex Beams {.}

프리플렉스 합성보(preflex composite beam)는 철골보에 미리 설계 하중을 재하시킨 후, 철골보의 하부 플랜지에 고강도 콘크리트를 타설 및 양생하여 콘크리트에 압축 프리스트레스를 도입하는 합성구조이다. 그러나 현재 프리플렉스 합성보가 단순보로 설계되고 있어 건축물에 적용시 지진하중과 풍하중 등의 수평하중에 대해 저항하기 위해서는 전단벽 등의 수평하중 저항요소에 모든 횡력을 부담시켜야 하는 문제점과 프레임구조로 설계시 구조물의 프리플렉스 합성보를 단순보 지지조건으로 처리함에 따라 골조에서 보-기둥 접합부가 핀 상태로 됨에 따라 이를 고정상태로 하는 것에 비하여 구조물의 횡하중 저항능력, 바닥판의 진동, 합성보의 깊이(depth) 등 많은 구조적 및 기능적의 이점을 포기해야 하는 문제가 있다.A preflex composite beam is a composite structure in which a compressive prestress is introduced into concrete by loading and curing high-strength concrete on the lower flange of the steel beam after loading a design load on the steel beam in advance. However, preflex composite beams are designed as simple beams, so when applied to buildings, in order to resist the horizontal loads such as earthquake loads and wind loads, all lateral forces must be applied to horizontal load resistance elements such as shear walls. As the pre-flex composite beam of the structure is treated as a simple beam support condition, the beam-column joint becomes pinned in the frame so that it is fixed, whereas the lateral load resistance of the structure, the vibration of the bottom plate, and the depth of the composite beam Many structural and functional advantages have to be abandoned.

따라서 본 발명에서는 철근콘크리트 기둥과 프리플렉스 보의 접합부에서 시공성 및 경제성 향상을 위한 RCS(Reinforced Concrete column-Steel beam) 접합방식으로 「SB (Steel Bracket) Type 접합부」, 「EC (Erection Column) Type 접합부」, 「EB (Embedded Beam) Type 접합부」등 세가지의 시공법을 개발한다.Therefore, in the present invention, `` SB (Steel Bracket) Type joint '', `` EC (Erection Column) Type joint part by RCS (Reinforced Concrete column-Steel beam) joining method for improving the constructability and economical efficiency at the joint part of the reinforced concrete column and the preflex beam And three construction methods, `` EB (Embedded Beam) Type Joint ''.

본 발명의 내용을 그림을 이용하여 설명하면 다음과 같다.The content of the present invention will be described with reference to the following.

제 1도는 「SB (Steel Bracket) Type 접합부」의 시공 원리를 보이고 있다. 여기서, SB 타입 접합부는 프리플렉스 보 <도 1, 2, 3의 ①)>와 RC 기둥 <도 1, 2,3의 ②>의 접합시 시공성을 용이하게 하기 위하여 접합부에 브라켓 형식의 "+"자형 철골보(도 1의 ④) 혹은 "T"자형 철골보 <도 1의 ⑤>를 선 시공한 후, 기둥 콘크리트가 굳은 후에 프리플렉스 보를 연결하는 공법이다. 따라서 프리플렉스 보를 접합하기 이전까지의 공정은 RCS공법과 동일하며, 프리플렉스 보는 <도 1>과 같이 Steel Bracket에 강접합 <도 1의 ⑥>으로 접합하게 된다. 그리고 프리플렉스 보와 콘크리트 기둥의 접합부에 대한 보강방안은 크게 세가지를 들 수 있다. 먼저 FBP (Face Bearing Plate, 도 1, 2, 3의 ⑦)는 철골보와 기둥이 접하는 부위에서 철골보의 웨브를 보강하는 스티프너이다. 그리고 E-FBP (Extended Face Bearing Plate, 도 1, 2, 3의 ⑨)는 철골보와 기둥의 접합부 상하단에 ㄷ-형강 (channel) 혹은 밴드 플레이트 <도 1, 2, 3의 ⑧> 등을 사용하는 방법이다. 또한, 패널존의 구속 및 전단보강을 위해서는 패널존에 후프 철근 <도 1, 2, 3의 ③>을 사용하게 된다. 이러한 후프 철근을 연속으로 배근하기 위해서는 패널존 내에서 철골 웨브에 구멍을 내는 방법이 일반적으로 사용된다.1 shows the construction principle of "SB (Steel Bracket) Type joint part". Here, the SB type joints are bracket-shaped &quot; + &quot; for easy construction when joining the preflex beams (1) in Figs. 1, 2 and 3) and the RC pillars 2 &amp; cir &amp; After constructing a steel cheolgolbo (④ of Figure 1) or "T" shaped cheolgolbo <⑤ of Figure 1>, the method of connecting the preflex beam after the column concrete is solidified. Therefore, the process until joining the preflex beam is the same as the RCS method, and the preflex beam is joined to the steel bracket by the steel joint <6> of FIG. 1 as shown in FIG. And there are three major reinforcement measures for the joints of the preflex beams and the concrete columns. First, FBP (Face Bearing Plate, ⑦ of Fig. 1, 2, 3) is a stiffener to reinforce the web of cheolgolbo at the site where the cheolgolbo and the pillar contact. And E-FBP (Extended Face Bearing Plate, ⑨ of Fig. 1, 2, 3) is to use the c-channel or band plate (⑧ of Fig. 1, 2, 3), etc. at the upper and lower ends of the connection between the cheolgolbo and the pillar. Way. In addition, for restraint and shear reinforcement of the panel zone, the hoop rebar <3> of FIGS. 1, 2, and 3 is used for the panel zone. In order to continuously reinforce these hoop reinforcing bars, a method of punching steel webs in a panel zone is generally used.

제 2도는 EC 타입 접합부는 철골공사와 콘크리트 공사를 분리하면서, 구조 성능을 향상시킬 수 있는 공법이다. 따라서 조립용 철골기둥(Erection Steel Column, 도 2의 ⑩)과 프리플렉스 보를 선 시공한 후, 기둥 및 바닥 콘크리트 슬래브를 타설한다. EC 공법의 구조적인 장점은 기둥에 매립된 조립용 철골기둥과 프리플렉스 보를 강접합으로 연결이 가능하기 때문에 접합부의 강도를 증진시킬 수 있다는 장점이 있다.2 is a construction method that can improve the structural performance, while separating the EC-type joints and steel construction and concrete construction. Therefore, after the construction of the steel column (Erection Steel Column (Fig. 2)) and preflex beams for the pre-installation, the column and floor concrete slab is poured. The structural advantage of the EC method is that it is possible to connect the steel pillars and preflex beams embedded in the pillars with strong joints, thereby increasing the strength of the joints.

제 3도의 EB 타입 접합부는 철골부재를 콘크리트 기둥에 삽입하는 일반적인공법과 유사하다. EB 타입 접합 방식에서 내부접합부의 경우에는 두개의 프리플렉스 보를 용접 혹은 볼트 등을 통하여 일체화 할 수 있지만, 외부접합부의 경우에는 적절한 접합방법을 사용하여야 한다. 따라서 <도 3>과 같이 쉬어 코넥터(⑫)와 훅크 철근(⑬)을 사용하는 방법과 쉬어 코넥터(⑫)와 함께 프리플렉스 보의 끝단에 용접한 철판(⑪)을 사용하는 방법을 개발하였다.EB type joint of FIG. 3 is similar to the general method of inserting a steel member into a concrete column. In the case of EB type joints, two preflex beams can be integrated by welding or bolts in the case of internal joints, but in the case of external joints, appropriate joints should be used. Therefore, as shown in FIG. 3, a method of using a sheath connector and a hook rebar and a method of using a steel plate welded to the end of the preflex beam together with the sheath connector were developed.

본 발명은 철근콘크리트 기둥과 프리플렉스 보를 강접합으로 접합함으로서 안전하고 경제적인 프리플렉스 합성보의 시공이 가능하게 하여, 프리플렉스 보 - 철근콘크리트 기둥 접합부의 일체화를 도모하는 한편, 프리플렉스 보의 양단부를 고정시킴으로서 Mo- Mc(/24) 만큼의 부재량을 감소할 수 있는 이점을 가지고 있다.The present invention enables the construction of safe and economical preflex composite beams by joining reinforced concrete columns and preflex beams by steel joints, thereby facilitating the integration of preflex beam-reinforced concrete column joints, and at both ends of the preflex beams. By fixing M o -M c ( / 24) has the advantage that can reduce the amount of members.

..

제 1 도는 본 발명에 의한 「SB (Steel Bracket) Type 접합부」의 원리도1 is a principle diagram of the "SB (Steel Bracket) Type junction part" according to the present invention

제 2 도는 본 발명에 의한 「EC (Erection Column) Type 접합부」의 원리도2 is a principle diagram of the "EC (Erection Column) Type junction" according to the present invention.

제 3 도는 본 발명에 의한 「EB (Embedded Beam) Type 접합부」의 원리도3 is a principle diagram of the "EB (Embedded Beam) type junction part" according to the present invention

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

① : 프리플렉스 보 (Preflex Beam)①: Preflex Beam

② : 철근콘크리트 기둥②: reinforced concrete column

③ : 접합부 띠근③: junction band

④ : "+" 철골 브라켓 (Steel Bracket)④: "+" Steel Bracket

⑤ : "ㅜ" 철골 브라켓 (Steel Bracket)⑤: "TT" Steel Bracket

⑥ : 철골 브라켓 접합⑥: Steel Bracket Joint

⑦ : FBP (Face Bearing Plate)⑦: FBP (Face Bearing Plate)

⑧ : 밴드 플레이트 (Band Plate)⑧: Band Plate

⑨ : E-FBP (Extended - Face Bearing Plate)⑨: E-FBP (Extended-Face Bearing Plate)

⑩ : Erection Column⑩: Erection Column

⑪ : 플레이트 (Plate)⑪: Plate

⑫ : 쉬어 코넥터 (Shear Connector)⑫: Shear Connector

⑬ : 후크철근 (Hook Bar)⑬: Hook Bar

..

..

Claims (1)

본 발명에서는 프리플렉스 합성보에서 부모멘트 발생하는 RC기둥과 보의 접합부에서 시공성 및 경제성 향상을 위한 접합방식으로 「SB Type」,「EC Type」,「EB Type」등 세가지의 접합방식을 개발하였다. 따라서 특허청구의 범위는 프리플렉스 보를 철근콘크리트 기둥에 강접합으로 접합할 수 있는 이상의 세가지 접합방식으로 한다.In the present invention, three joint methods such as "SB Type", "EC Type", and "EB Type" were developed as a joining method for improving the constructability and economic efficiency at the joint between the RC column and the beam generated in the parent composite beam. Therefore, the scope of the claims is made of the above three joining methods that can be joined to the reinforced concrete column by steel joints.
KR1020000000812A 2000-01-08 2000-01-08 Steel joint method of reinforced concrete columns and preflex beams KR20010078528A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225344A (en) * 2013-05-23 2013-07-31 东北石油大学 Hollow steel section-concrete combined framework and construction method thereof
KR101292395B1 (en) * 2011-09-22 2013-08-01 대림산업 주식회사 A compenstation struture for high strength polygonal centrifugal precast columns

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290844A (en) * 1988-05-18 1989-11-22 Shimizu Corp Structure of connection part of column with beam
JPH06316962A (en) * 1993-05-10 1994-11-15 Mitsui Constr Co Ltd Structure for joining column and beam
JPH10280542A (en) * 1997-03-31 1998-10-20 Ando Corp Joint construction between reinforced concrete column and steel framed beam
JPH10299170A (en) * 1997-04-21 1998-11-10 Taisei Corp Connecting structure for column and beam
JPH11100900A (en) * 1997-09-29 1999-04-13 Ando Kensetsu Kk Joint part structure between reinforced concrete column and steel beam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290844A (en) * 1988-05-18 1989-11-22 Shimizu Corp Structure of connection part of column with beam
JPH06316962A (en) * 1993-05-10 1994-11-15 Mitsui Constr Co Ltd Structure for joining column and beam
JPH10280542A (en) * 1997-03-31 1998-10-20 Ando Corp Joint construction between reinforced concrete column and steel framed beam
JPH10299170A (en) * 1997-04-21 1998-11-10 Taisei Corp Connecting structure for column and beam
JPH11100900A (en) * 1997-09-29 1999-04-13 Ando Kensetsu Kk Joint part structure between reinforced concrete column and steel beam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101292395B1 (en) * 2011-09-22 2013-08-01 대림산업 주식회사 A compenstation struture for high strength polygonal centrifugal precast columns
CN103225344A (en) * 2013-05-23 2013-07-31 东北石油大学 Hollow steel section-concrete combined framework and construction method thereof
CN103225344B (en) * 2013-05-23 2015-02-11 东北石油大学 Hollow steel section-concrete combined framework and construction method thereof

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