KR20120002629A - The structure of lattice girder - Google Patents

The structure of lattice girder Download PDF

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Publication number
KR20120002629A
KR20120002629A KR1020100063234A KR20100063234A KR20120002629A KR 20120002629 A KR20120002629 A KR 20120002629A KR 1020100063234 A KR1020100063234 A KR 1020100063234A KR 20100063234 A KR20100063234 A KR 20100063234A KR 20120002629 A KR20120002629 A KR 20120002629A
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South Korea
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steel
bending
fixing
steel bar
support
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KR1020100063234A
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Korean (ko)
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KR101211763B1 (en
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진명구
최주환
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진명구
최주환
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/02—Non-telescopic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section

Abstract

PURPOSE: A coupling structure of assemblable steel timbering is provided to increase durability by enhancing fastening force and enhance workability by shortening working time. CONSTITUTION: A coupling structure of assemblable steel timbering is as follows. Upper/lower steel bars(12,12a) make tight contact with fixing units(21,25) on the outer corners of a support(20). First and second clamp bands protecting the outer surface of a steel bar make tight contact with bent units(23,24,28) by bending the bending units(36) of one side of the fixing unit in a state one hanging unit(34) is inserted into the fitting grooves(22,26) of the other side of the fixing unit.

Description

조립식 강지보의 결합구조{THE STRUCTURE OF LATTICE GIRDER}STRUCTURE OF LATTICE GIRDER}

본 발명은 조립식 강지보의 결합구조에 관한 것으로서, 보다 상세히는 스틸바가 지지대 및 클램프밴드에 의해 강인하게 결합되도록 하여 내구성을 향상시키고 작업성을 향상시켜 공사기간을 월등히 단축할 수 있는 조립식 강지보의 결합구조에 관한 것이다.
The present invention relates to a coupling structure of prefabricated steel beams, and more specifically, to the steel bar is strongly bonded by the support and the clamp band to improve the durability and workability of the prefabricated steel beams that can significantly shorten the construction period It relates to a coupling structure.

일반적으로, 강지보(Lattice girder)는 터널을 시공할 때 지반의 침몰 및 암반의 낙하를 방지하기 위해 터널 내부의 굴진면을 따라 아치형으로 설치되는 것으로, 격자보 또는 격자지보라고 한다. 이러한 강지보를 터널 내부에 세로로 설치하고 가로방향의 간격지지대로 고정한 후, 쇼크리트(Shocrete)를 타설하여 터널의 기초공사가 완료된다.Generally, the lattic girder is installed in an arch shape along the excavated surface of the tunnel to prevent the sinking of the ground and the fall of the rock when constructing the tunnel, called lattice beam or lattice beam. The steel beams are installed vertically inside the tunnel and fixed with horizontally spaced support, and after shocrete is completed, the foundation work of the tunnel is completed.

상기의 격자지보에 관한 종래기술로는 국내공개특허 제:10-1994-0021892(1994.10.19.)호 또는, 국내실용신안출원 제:20-2002-0025938(2002.08.30.)호 등이 이미 공지된 바에 있으나, 스틸바와 고정부재(스파이더)가 용접방식으로 융착되어 있어서, 내식성이 취약하고 내구성이 저하되는 등의 문제점이 있었다.As a related art for the grid support, Korean Patent Application Publication No. 10-1994-0021892 (1994.10.19.) Or Korean Utility Model Application No. 20-2002-0025938 (2002.08.30.) Although it is known, there is a problem that the steel bar and the fixing member (spider) is fused by welding, so that the corrosion resistance is weak and durability is lowered.

이로 인해 본 발명의 출원인과 동일한 출원인에 의해 아래의 선행기술문헌과 같은 국내특허출원 제10-2010-0043320호(2010.05.10. 미공개) 내지는, 국내특허출원 제10-2010-0048594호(2010.05.25. 미공개), 국내특허출원 제10-2010-0057178호(2010.06.16. 미공개)를 이미 선 제안한 바에 있으며, 조립식 격자지보에 구체적인 설명은 생략하기로 한다.
For this reason, Korean Patent Application No. 10-2010-0043320 (published on May 10, 2010, unpublished) or Korean Patent Application No. 10-2010-0048594 (2010.05. 10) by the same applicant as the applicant of the present invention. 25. Unpublished), Korean Patent Application No. 10-2010-0057178 (2010.06.16. Unpublished) has already been proposed in advance, detailed description of the prefabricated grid support will be omitted.

1.국내특허출원 제10-2010-0043320호(2010.05.10. 미공개)1.Korean Patent Application No. 10-2010-0043320 (2010.05.10.Unpublished) 2.국내특허출원 제10-2010-0048594호(2010.05.25. 미공개)2.Korean Patent Application No. 10-2010-0048594 (2010.05.25.Unpublished) 3.국내특허출원 제10-2010-0057178호(2010.06.16. 미공개)3.Korean Patent Application No. 10-2010-0057178 (Jun. 16, 2010, unpublished)

본 발명은 스틸바를 고정하기 위한 지지대에 클램프밴드의 일측을 끼움 고정한 채로 타측을 밴딩하여 체결하는 방식으로써, 체결력을 향상시켜 내구성을 증가시킴과 더불어 작업시간을 단축하여 작업성이 더욱더 향상되는 조립식 강지보의 결합구조를 제공하는 데 목적이 있다.
The present invention is a method of fastening the other side while clamping one side of the clamp band to the support for fixing the steel bar by fastening the other side, improves the tightening force to increase the durability and shorten the working time to further improve the workability The purpose is to provide a joining structure of the beam.

본 발명은, 상/하부 스틸바가 조립식 고정수단에 의해 나란하게 지지된 조립식 강지보의 결합구조에 있어서, 상기 상/하부 스틸바가 지지대의 외곽 모서리에 마련된 고정부에 밀착되며, 상기 스틸바의 바깥면을 감싸는 제1, 제2클램프밴드는 일측 걸침부가 상기 고정부 일측의 끼움홈에 끼워진 채로 타측의 밴딩부를 구부려 절곡부에 밀착하도록 된 것을 특징으로 하는 강지보의 체결구조를 제안한다.The present invention, in the coupling structure of the prefabricated steel beam in which the upper / lower steel bar is supported side by side by the prefabricated fixing means, the upper / lower steel bar is in close contact with the fixing portion provided on the outer edge of the support, the outside of the steel bar The first and second clamp bands surrounding the surface propose a fastening structure of the steel beams, wherein one side of the bent portion is bent into the fitting groove of one side of the fixing portion to bend the bending portion of the other side to be in close contact with the bent portion.

또한 본 발명의 상기 절곡부의 일측에 밴딩부가 끼워지도록 밴딩홈이 형성된 것을 특징으로 한다.In addition, the bending groove is formed so that the bending portion is fitted to one side of the bent portion of the present invention.

또한 본 발명의 상기 스틸바는 SD400, SD500 중에서 선택된 하나의 것으로 구성됨을 특징으로 한다.In addition, the steel bar of the present invention is characterized in that it is composed of one selected from SD400, SD500.

또한 본 발명은 상기 클램프밴드에는 절개홈이 형성된 것을 특징으로 한다.In another aspect, the present invention is characterized in that the cutting groove is formed in the clamp band.

본 발명은 강지보의 결합구조가 간소화하여 제작 및 생산성이 우수할 뿐만 아니라 설치작업이 용이하여 작업성이 월등히 향상되며, 견고한 구조로서 내구성을 한층더 향상시키는 효과가 있다. 역시 본 발명은 터널의 강지보 설치공사는 물론, 터널의 공사기간을 단축하고 공사비용을 절감하는 등의 효과를 제공한다.
The present invention is not only excellent production and productivity due to the simple structure of the rigid jibo, but also easy to install work, the workability is significantly improved, and has a robust structure to further improve the durability. In another aspect, the present invention provides an effect such as shortening the construction period of the tunnel, as well as the construction cost of the tunnel, and the construction cost of the tunnel.

도 1은 본 발명의 바람직한 실시 예에 따른 조립식 강지보의 결합구조를 분리하여 나타낸 사시도.
도 2는 본 발명에 따른 강지보의 주요부를 부분적으로 나타낸 사시도.
도 3은 본 발명에 따른 강지보의 지지대에 클램프밴드를 밴딩하여 고정한 상태를 단면으로 나타낸 도면.1 is a perspective view showing a separated structure of the prefabricated steel beam according to a preferred embodiment of the present invention.
Figure 2 is a perspective view partially showing the main part of the steel beam according to the present invention.
3 is a cross-sectional view showing a state in which a clamp band is fixed to a support of a steel beam according to the present invention.

이하 본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 상세히 설명한다. 상기의 도면에 따르면 본 발명은, 상/하부 스틸바(12,12a)가 조립식 고정수단에 의해 나란하게 지지된 조립식 강지보의 결합구조에 있어서, 상기 상/하부 스틸바(12,12a)가 지지대(20)의 외곽 모서리에 마련된 고정부(21,25)에 밀착되며, 상기 스틸바(12,12a)의 바깥면을 감싸는 제1, 제2클램프밴드(30,30a)는 일측 걸침부(34)가 상기 고정부 일측의 끼움홈(22,26)에 끼워진 채로 타측의 밴딩부(36)를 구부려 절곡부(23,24,28)에 밀착하도록 된 것을 특징으로 한다.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. According to the above drawings, the present invention, in the coupling structure of the prefabricated steel beams in which the upper and lower steel bars 12 and 12a are supported side by side by the prefabricated fixing means, the upper and lower steel bars 12 and 12a are The first and second clamp bands 30 and 30a closely contact the fixing parts 21 and 25 provided at the outer edges of the support 20, and surround the outer surfaces of the steel bars 12 and 12a. 34 is bent in the fitting grooves 22 and 26 on one side of the fixing part, and the other bending portion 36 is bent to be in close contact with the bent portions 23, 24 and 28.

위를 더욱 자세하게 설명하면 다음과 같다.The above is described in more detail as follows.

먼저, 본 발명에 따른 터널공사용 강지보(10)는 상부 스틸바(12) 및 하부 스틸바(12a)와, 상기 스틸바를 고정하기 위한 고정수단이 구비되며, 상기의 고정수단으로 지지대(20)와, 상기 스틸바를 지지대에 체결하기 위한 제1, 제2클램프밴드(30,30a)를 구성한다. First, the steel beam 10 for tunnel construction according to the present invention is provided with a fixing means for fixing the upper steel bar 12 and the lower steel bar 12a, and the steel bar, the support 20 as the fixing means And first and second clamp bands 30 and 30a for fastening the steel bar to the support.

상기 스틸바(12,12a)는 일정한 길이를 가지며, 복수 개가 소정의 간격을 두고 나란하게 구비되며, 바람직하게는 도면에서처럼 상부 스틸바(12)의 하부 양측에 하부 스틸바(12a)가 일정 간격으로 나란하게 이격되도록 지지대(20)에 의해 고정된다. The steel bars 12 and 12a have a predetermined length, and a plurality of the steel bars 12 are provided side by side at a predetermined interval, and preferably, as shown in the drawing, the lower steel bars 12a are disposed at both lower sides of the upper steel bar 12 at regular intervals. It is fixed by the support 20 so as to be spaced side by side.

상기 지지대(20)는 스틸바(12,12a)의 갯수 및 배치에 따라 다각형으로 이루어지고, 모서리부에 스틸바를 결합시킬 수 있는 고정부(21,25)가 구비된다. 상기의 도면에 따르면, 삼각형으로 된 지지대(20)의 모서리에 상/하부 스틸바(12,12a)가 결합하여 삼각의 기둥형태로 이루어지는 것이 바람직하다. 상기 지지대(20)는 상부와 하부 양측에 고정부(21,25)가 형성되고, 상기 고정부(21,25)에 클램프밴드(30,30a)가 탈/부착식으로 조립된다. The support 20 is made of a polygon according to the number and arrangement of the steel bars (12, 12a), it is provided with fixing parts (21, 25) to couple the steel bar to the corner. According to the above drawings, it is preferable that the upper and lower steel bars 12 and 12a are coupled to the corners of the triangular support 20 to form a triangular pillar. The support 20 has fixing parts 21 and 25 formed at both upper and lower sides thereof, and clamp bands 30 and 30a are assembled to the fixing parts 21 and 25 in a detachable manner.

상기 지지대(20)는 하부 양측과 상부 중간에 고정부(21,25)를 형성하고 상기 고정부의 일측으로 끼움홈(22,26)이 형성되며, 상기 고정부(21,25)에 스틸바(12,12a)가 삽입하여 밀착된다. The support 20 has fixing parts 21 and 25 formed at both lower sides and the upper middle, and fitting grooves 22 and 26 are formed at one side of the fixing part, and steel bars are formed on the fixing parts 21 and 25. (12, 12a) are inserted and in close contact.

상기 지지대(20)는 외측 가장자리를 따라 'ㄷ'자로 절곡부(23,24,28)가 형성된다. 상기 절곡부(23,24,28)는 양측면 내지 상부, 하부를 'ㄷ'자로 형성하여 고정부를 보강함과 더불어 상기 스틸바를 견고하게 지지한다.The support 20 is a bent portion (23, 24, 28) is formed along the outer edge of the letter 'C'. The bent portions (23, 24, 28) is formed on both sides to the upper, lower '' 'to reinforce the fixing portion and to firmly support the steel bar.

상기 제1, 제2클램프밴드(30,30a)는 스틸바의 외측면을 감싸면서 고정부에 각각 조립된다. 이를 위해 상기 스틸바의 외측면을 감싸도록 곡면이고, 일측에 돌출된 걸침부(34)가 끼움홈(22,26) 내측으로 삽입되고, 타측의 밴딩부(36)를 절곡부에 구부려 압착 고정시킨다. 다시 말해 상기 제1, 제2클램프밴드(30,30a)가 스틸바에 밀착되게 하고 상기 밴딩부(36)를 절곡부의 외측면에 밀착시킨 채로 끝부분을 절곡부의 내측으로 구부림에 따라, 'U'자로 밴딩부(36')가 압착되면서 이탈되지 않고 강인하게 고정된다. 상기의 제1, 제2클램프밴드(30,30a)는 스틸바의 체결위치에 따라 도면에서처럼 'C'자 또는 반원으로 형성하게 된다. The first and second clamp bands 30 and 30a are respectively assembled to the fixing part while surrounding the outer surface of the steel bar. To this end, a curved surface is wrapped around the outer surface of the steel bar, and the hooking portion 34 protruding on one side is inserted into the fitting grooves 22 and 26, and the other bending portion 36 is bent to bend and fixed. Let's do it. In other words, as the first and second clamp bands 30 and 30a are brought into close contact with the steel bar and the bending part 36 is brought into close contact with the outer surface of the bent part, the end portion is bent into the bent part, 'U'. As the banding portion 36 'is compressed, it is firmly fixed without being separated. The first and second clamp bands 30 and 30a are formed in a 'C' shape or a semi-circle as shown in the drawing depending on the fastening position of the steel bar.

여기서 본 발명은, 상기 절곡부(23,24,28)의 일측에 밴딩부(36')가 끼워지도록 밴딩홈(23a,24a)이 형성된 것을 특징으로 한다. 즉 상기의 밴딩부(36)가 절곡부를 밴딩시, 밴딩홈에 끼워지면서 정밀하게 고정이 이루어짐과 더불어 고정력을 증가시키며, 밴딩부(36')의 모서리가 돌출되지 않고 간섭을 방지한다.The present invention is characterized in that the bending grooves (23a, 24a) is formed so that the bending portion (36 ') is fitted to one side of the bent portion (23, 24, 28). That is, when the bending part 36 is bending the bent part, the bending part 36 is precisely fixed while being inserted into the bending groove and increases the fixing force, and the edge of the bending part 36 ′ does not protrude and prevents interference.

한편, 상기의 상부 스틸바(12a)는 단면적이 하부 스틸바(12) 보다 크게 이루어지는 것이 바람직하며, 상기의 클램프밴드(30)도 역시 스틸바의 규격에 대응하여 적합한 규격으로 구성하게 된다.On the other hand, the upper steel bar 12a is preferably made larger in cross-section than the lower steel bar 12, the clamp band 30 is also configured to a suitable standard corresponding to the standard of the steel bar.

본 발명은 상기 지지대(20)와 인접하는 다른 지지대(20)를 연결하는 연결바(14)가 더 구비된다. 이를 위해 상기 지지대의 하부에 연결구멍(29)을 형성하고 상기 연결바(14)의 단부를 끼워 고정함에 따라, 상기 지지대에 의해 재자 보강이 이루어짐은 물론 내구성을 향상시키며, 상기 연결바의 길이에 따라 지지대 간의 간격을 일정하게 고정할 수 있게 된다.The present invention is further provided with a connecting bar 14 for connecting the support 20 and the other support 20 adjacent. To this end, as the connection hole 29 is formed in the lower part of the support and the end of the connection bar 14 is fixed to each other, reinforcement is made by the support, as well as the durability is improved, and the length of the connection bar Accordingly, the distance between the supports can be fixed constantly.

본 발명에 따르면, 상기 스틸바(12,12a)는 SD400, SD500 중에서 선택된 하나의 것으로 구성됨을 특징으로 한다. 즉 상기 강지보(10)는 스틸바(12,12a) 또는 연결바(14)가 강으로 된 봉체로 이루어지며, 인장력 및 탄성계수가 뛰어난 통상의 철근(鐵筋)이 바람직하며, 구체적으로 한국산업규격(KSD 3504, 철근 콘크리트용 봉강)에 정의되어 있는 고강도철근으로 SD400 또는 SD500이 가장 바람직하다.According to the present invention, the steel bar (12, 12a) is characterized in that consisting of one selected from SD400, SD500. That is, the steel beam 10 is made of a steel bar (12, 12a) or the connecting bar 14 is made of steel, it is preferable that the ordinary reinforcing bar (뛰어난) excellent in tensile strength and elastic modulus, specifically Korea SD400 or SD500 is most preferred as the high-strength reinforcing bar defined in the industrial standard (KSD 3504, steel bars for reinforced concrete).

이와 함께 상기의 제1, 제2 클램프밴드(30,30a)는 중간부에 절개홈(32)을 형성하여 스틸바의 표면에 밀착하도록 구성된다. 다시 말해 상기의 스틸바가 철근으로 된 경우에, 상기 철근의 표면에 돌출되어 있는 요철부(마디)가 절개홈으로 삽입되면서 간섭되지 않고 클램프밴드가 철근의 표면에 긴밀하게 밀착하여 보다 강인하게 고정되는 것이다.In addition, the first and second clamp bands 30 and 30a are configured to form an incision groove 32 in the middle portion to be in close contact with the surface of the steel bar. In other words, in the case where the steel bar is made of reinforcing bars, the uneven parts (nodes) protruding from the surface of the reinforcing bars are inserted into the incision grooves, so that the clamp band is closely adhered to the surface of the reinforcing bars and is more firmly fixed. will be.

이때 본 발명에 따른 상기 클램프밴드(30,30a)에는 절개홈(32)이 형성된 것을 특징으로 한다. 즉 상기 철근에 클램프밴드(30,30a)를 감싸면 요철부에 의해 철근과 긴밀하게 밀착하지 못하게 됨으로, 상기의 절개홈(32)에 요철부가 끼워져 맞물리면서 긴밀하게 접촉함은 물론, 클램프밴드가 길이방향으로 미끄러지지 않고 견고하게 고정된다.At this time, the clamp band 30, 30a according to the invention is characterized in that the incision groove 32 is formed. That is, when the clamp bands 30 and 30a are wrapped around the reinforcing bars, they are not in close contact with the reinforcing bars by the uneven parts, so that the uneven parts are fitted into the incision grooves 32 to be in close contact with each other, as well as the clamp band is in the longitudinal direction. It is firmly fixed without slipping.

아울러, 상기 클램프밴드의 밴딩부(36)를 용이하게 밴딩하기 위해 밴딩수단이 구비하는 것이 바람직하며, 또는, 망치 등의 공구를 사용하여 수작업으로 밴딩할 수도 있다. 상기 밴딩수단은 스틸(철)로 이루어진 밴딩부를 유압이나 에어에 의해 작동하면서 직선의 밴딩부(36)를 'U'자의 밴딩부(36')로 구부리는 밴딩기로 구성되며, 구체적인 설명은 생략하기로 한다.In addition, it is preferable that the bending means is provided in order to easily bend the bending portion 36 of the clamp band, or it may be banded by hand using a tool such as a hammer. The bending means is composed of a bending machine bending the straight banding portion 36 to the 'U' banding portion 36 'while operating the bending portion made of steel (iron) by hydraulic or air, and a detailed description thereof will be omitted. Shall be.

상기와 같이 구성된 본 발명은, 단위 규격의 강지보(10)를 길이방향으로 연결할 수 있게 스틸바의 양단부에 연결수단(미도시)이 구비되며, 터널 내부에 아치형으로 설치하게 된다. 상기 강지보의 연결수단으로는 스틸바의 끝단에 결합되는 측판을 부착하고 볼트 등의 체결구로 상호 조립하도록 구성하는 것이 바람직하다.
The present invention configured as described above, the connecting means (not shown) is provided at both ends of the steel bar to connect the rigid beam 10 of the unit standard in the longitudinal direction, it is installed in an arch shape inside the tunnel. As the connecting means of the steel beam, it is preferable to attach the side plate coupled to the end of the steel bar and to be configured to be mutually assembled with fasteners such as bolts.

본 발명의 조립식 강지보의 결합구조는 내구성이 우수하고 터널 내부의 안전성 및 신뢰도를 향상시키며, 터널 공사현장 여건에 따라 설치작업이 신속하면서도 작업성이 뛰어날 뿐만 아니라 공사기간을 현저히 단축시켜 공사비용을 절감하는 등 매우 경제적이다.
The combined structure of the prefabricated steel beam of the present invention is excellent in durability and improves the safety and reliability inside the tunnel, and according to the tunnel construction site conditions, the installation work is not only quick and excellent in workability but also significantly shortening the construction period, thereby reducing the construction cost. It is very economical.

10:강지보 12:하부 스틸바 12a:상부 스틸바
14:연결바 20:지지대 21,25:고정부
22,26:끼움홈 23:측면 절곡부 24:상부 절곡부
28:하부 절곡부 29:연결구멍 30:제1클램프밴드
30a:제2클램프밴드 32:절개홈 34:걸침부
36,36':밴딩부10: steel plate 12: lower steel bar 12a: upper steel bar
14: connecting bar 20: support 21, 25: fixed part
22, 26: fitting groove 23: side bent portion 24: upper bent portion
28: lower bend 29: connection hole 30: first clamp band
30a: second clamp band 32: incision groove 34: claw
36,36 ': Bending part

Claims (4)

상/하부 스틸바(12,12a)가 조립식 고정수단에 의해 나란하게 지지된 조립식 강지보의 결합구조에 있어서,
상기 상/하부 스틸바(12,12a)가 지지대(20)의 외곽 모서리에 마련된 고정부(21,25)에 밀착되며, 상기 스틸바(12,12a)의 바깥면을 감싸는 제1, 제2클램프밴드(30,30a)는 일측 걸침부(34)가 상기 고정부 일측의 끼움홈(22,26)에 끼워진 채로 타측의 밴딩부(36)를 구부려 절곡부(23,24,28)에 밀착하도록 된 것을 특징으로 하는 강지보의 체결구조.
In the coupling structure of the prefabricated steel beams in which the upper and lower steel bars 12 and 12a are supported side by side by the prefabricated fixing means,
The first and second steel bars 12 and 12a are in close contact with fixing parts 21 and 25 provided at the outer edges of the support 20, and cover the outer surfaces of the steel bars 12 and 12a. The clamp bands 30 and 30a are in close contact with the bent portions 23, 24 and 28 by bending the bending portion 36 on the other side while the one end portion 34 is fitted into the fitting grooves 22 and 26 on one side of the fixing portion. Fastening structure of Gangjibo, characterized in that to be.
제1항에 있어서,
상기 절곡부(23,24,28)의 일측에 밴딩부(36')가 끼워지도록 밴딩홈(23a,24a)이 형성된 것을 특징으로 하는 조립식 강지보의 결합구조.
The method of claim 1,
Coupling structure of the prefabricated steel beam, characterized in that the bending groove (23a, 24a) is formed so that the bending portion (36 ') is fitted on one side of the bent portion (23, 24, 28).
제1항 또는 제2항에 있어서,
상기 스틸바(12,12a)는 SD400, SD500 중에서 선택된 하나의 것으로 구성됨을 특징으로 하는 조립식 강지보의 결합구조.
The method according to claim 1 or 2,
The steel bar (12, 12a) is a coupling structure of prefabricated steel beams, characterized in that consisting of one selected from SD400, SD500.
제1항에 있어서,
상기 클램프밴드(30,30a)에는 절개홈(32)이 형성된 것을 특징으로 하는 조립식 강지보의 결합구조.The method of claim 1,
The clamp band 30, 30a is a coupling structure of the prefabricated steel beam, characterized in that the incision groove 32 is formed.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101352704B1 (en) * 2012-03-08 2014-01-16 진명구 The assemblable lattice girder
KR101368542B1 (en) * 2012-06-19 2014-02-27 진명구 A lattice girder for tunnel construction

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* Cited by examiner, † Cited by third party
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KR200151125Y1 (en) * 1995-10-23 1999-07-15 김용신 Clip for connecting reinforced bars in bridge
KR100993096B1 (en) 2010-05-10 2010-11-08 최주환 A lattice girder for tunnel construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101352704B1 (en) * 2012-03-08 2014-01-16 진명구 The assemblable lattice girder
KR101368542B1 (en) * 2012-06-19 2014-02-27 진명구 A lattice girder for tunnel construction

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