KR102314836B1 - Lattice girder with lap joint - Google Patents

Lattice girder with lap joint Download PDF

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KR102314836B1
KR102314836B1 KR1020210072605A KR20210072605A KR102314836B1 KR 102314836 B1 KR102314836 B1 KR 102314836B1 KR 1020210072605 A KR1020210072605 A KR 1020210072605A KR 20210072605 A KR20210072605 A KR 20210072605A KR 102314836 B1 KR102314836 B1 KR 102314836B1
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support
grid
hole
fixing bolt
support plate
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KR1020210072605A
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Korean (ko)
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유정렬
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유정렬
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D11/183—Supporting means for arch members, not provided for in E21D11/22
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The present invention relates to a steel rib with lap-spliced reinforced connections, and an objective of the present invention is to provide a steel rib with lap-spliced reinforced connections, capable of connecting multiple lattice girders to form the steel rib extending along an excavated surface of a tunnel in a more substantial structure. To this end, the steel rib with lap-spliced reinforced connections, which is made by connecting three or more steel rods arranged in parallel with each other by connecting members, comprises: multiple lattice girders connected to each other to form a structure extending along an excavated surface of a tunnel; a support made of one or more plates formed to protrude in a lateral direction of the lattice girders; and a fastener configured to connect and bind a support of one of two lattice girders to be connected and a support of the other thereof, wherein one part of the fastener forms a section overlapping one lattice girder over a certain section and another part of the fastener forms a section overlapping the other lattice girder over a certain section so that the fastener forms the lap-spliced reinforced connections along with the support.

Description

겹이음 방식의 보강형 결합부를 구비하는 강지보재{Lattice girder with lap joint}Steel girder having a reinforcing joint of the lap joint {Lattice girder with lap joint}

본 발명은 터널 굴착시 굴착면을 지지하도록 설치되는 강지보재에 관한 것으로, 더욱 상세하게는 다수의 격자지보가 서로 결합되어 터널의 굴착면을 따라 연장되는 강지보재를 구성하도록 이루어지되, 격자지보와 격자지보의 연결부위에 겹이음 구조가 형성되어 보다 우수한 강성의 강지보재를 구현할 수 있도록 이루어진 겹이음 방식의 보강형 결합부를 구비하는 강지보재에 관한 것이다.The present invention relates to a steel support member installed to support an excavation surface during tunnel excavation, and more particularly, a plurality of grid supports are combined with each other to constitute a steel support member extending along the excavation surface of the tunnel. It relates to a steel support member having a reinforcing coupling part of a multi-joint method formed so that a multi-joint structure is formed in the connecting portion of the grid support to realize a steel support member with superior rigidity.

일반적으로 터널의 시공은 굴착과 내부 보강의 과정을 반복하는 것으로 이루어진다. 즉, 발파굴착 또는 기계굴착으로 일정한 거리만큼 굴착을 실시한 후 굴착면에 쇼크리트층을 시공하여 굴착된 터널의 내부를 보강하게 되며, 이러한 굴착과 내부 보강의 과정을 반복함으로써 목표한 길이의 터널을 시공하게 된다.In general, tunnel construction consists of repeating the process of excavation and internal reinforcement. That is, after excavating for a certain distance by blast excavation or mechanical excavation, the interior of the excavated tunnel is reinforced by constructing a shockcrete layer on the excavation surface. will be constructed

상기 쇼크리트층은 강도가 높은 금속재로 구성된 강지보재를 터널의 굴착면에 밀착 또는 근접되도록 설치하고, 굴착면에 강지보재가 매립되도록 쇼크리트를 타설함으로써 구성된다.The shockcrete layer is formed by installing a steel support member made of a high-strength metal material so as to be in close contact with or close to the excavation surface of the tunnel, and pouring the shockcrete so that the steel support material is embedded in the excavation surface.

상기 강지보재는 터널의 굴착면을 따라 연장되도록 굽어지게 형성된 다수의 격자지보가 서로 연결된 것으로 이루어지며, 통상적으로 굴착면의 상단부를 지지하는 상부강지보재와, 상기 상부강지보재의 양끝단으로부터 터널의 바닥으로 연장되는 구조를 갖도록 상부강지보재와 결합되는 하부강지보재로 구성된다.The steel support member consists of a plurality of grid supports formed to be bent to extend along the excavation surface of the tunnel and connected to each other, and an upper steel support member that normally supports the upper end of the excavation surface, and the upper steel support member from both ends of the tunnel It is composed of a lower steel support member coupled with an upper steel support member to have a structure extending to the floor.

한편, 상기 상부강지보재 및 하부강지보재는 터널의 횡단면 형상에 따라 굽어지게 형성된 3개 이상의 강봉이 연결부재에 의해 서로 결속된 것으로 이루어지되, 일측단부 또는 양측단부에는 연결판재가 용접되어 고정된 것으로 이루어지며, 상기 연결판재에는 볼트를 결합하기 위한 관통공이 형성된다.On the other hand, the upper steel support member and the lower steel support member consist of three or more steel rods bent according to the cross-sectional shape of the tunnel and bound to each other by a connecting member, and a connecting plate is welded to one or both ends to be fixed. It is made, and a through hole for coupling the bolt is formed in the connecting plate.

이와 같이 구성된 상부강지보재와 하부강지보재로 구성된 강지보재를 이용하여 굴착면에 쇼크리트층을 시공하고자 할 경우, 먼저 상부강지보재가 굴착면의 상단부에 위치하도록 배치하고, 상부강지보재의 좌우양측 하단부에 하부강지보재를 배치하되, 상부강지보재에 설치된 연결판재와 하부강지보재에 형성된 연결판재가 서로 밀착되도록 하부강지보재를 배치한 후, 두 연결판재의 관통공을 관통하도록 배치되는 볼트를 너트와 체결시킴으로써 상부강지보재와 하부강지보재를 서로 결속하여 고정시키게 된다.When constructing a shockcrete layer on the excavation surface using the steel support consisting of the upper and lower steel support members configured in this way, first, the upper steel support members are placed so that they are located at the upper end of the excavation surface, and the left and right sides of the upper steel support members After disposing the lower steel support member at the lower end, the lower steel support member is disposed so that the connecting plate installed on the upper steel support member and the connecting plate formed on the lower steel support member are in close contact with each other, and then screw the bolts disposed to penetrate the through holes of the two connecting board materials. By fastening with the upper steel support member and the lower steel support member, it is fixed by binding to each other.

상기와 같은 과정을 통해 요구되는 위치마다 강지보재의 설치가 완료되면, 강지보재가 매몰되도록 굴착면에 쇼크리트를 타설하고 양생시킴으로써 쇼크리트층이 시공된다.When the installation of the steel support member at each required position through the above process is completed, the shockcrete layer is constructed by pouring and curing the steel support member on the excavation surface so that the steel support member is buried.

이와 같이 터널을 시공함에 있어서, 내부 폭이 넓은 터널 전체를 한번에 굴착할 경우, 붕괴의 위험성이 있으므로, 단계적으로 굴착하는 방법이 사용되고 있다.In constructing the tunnel as described above, if the entire tunnel with a wide inner width is excavated at once, there is a risk of collapse, so a method of excavating in stages is used.

즉, 터널 횡단면을 기준으로 상측의 1차 굴착부와 하측의 2차 굴착부로 나누어 터널을 굴착하되, 먼저 1차 굴착부를 굴착하고, 1차 굴착부의 굴착면에 상부강지보재와 쇼크리트로 이루어진 상부쇼크리트층을 구성하게 되며, 상부쇼크리트층의 구성이 완료된 후 2차 굴착부를 굴착하게 된다.That is, the tunnel is excavated by dividing the upper primary excavation part and the lower secondary excavation part based on the cross section of the tunnel. The lith layer is formed, and the secondary excavation part is excavated after the construction of the upper shockcrete layer is completed.

한편, 1차 굴착부의 하측에 2차 굴착부를 굴착한 후, 하부강지보재가 상부강지보재의 하부에 위치하도록 2차 굴착부에 배치하되, 상부강지보재의 연결판재와 하부강지보재의 연결판재가 서로 마주한 채로 볼트와 너트의 체결에 의해 서로 결속되게 한 뒤, 하부강지보재가 매립되도록 쇼크리트를 타설하여 하부쇼크리트층을 시공하게 된다.On the other hand, after excavating the secondary excavation part on the lower side of the primary excavation part, the lower steel support member is placed in the secondary excavation part so that it is located below the upper steel support member, and the connecting plate of the upper steel support member and the connecting plate of the lower steel support member are After they are bound to each other by fastening the bolts and nuts while facing each other, the lower shockcrete layer is constructed by pouring the shockcrete so that the lower steel support member is embedded.

한편, 2차 굴착부를 굴착함에 있어서, 상부 쇼크리트층에 완전히 덮여 있는 상부강지보재의 하단부를 노출시켜 하부강지보재와 결합될 수 있도록 하는 작업이 2차 굴착부를 굴착하는 과정에서 병행하여 실시된다.On the other hand, in excavating the secondary excavation part, the operation of exposing the lower end of the upper steel support member completely covered by the upper shockcrete layer so that it can be combined with the lower steel support member is carried out in parallel in the process of excavating the secondary excavation part.

그러나, 상기 상부쇼크리트층의 쇼크리트는 상부강지보재의 외측 둘레부 뿐 아니라, 상부강지보재를 구성하는 강봉의 사이공간 및 연결판재의 관통공 내부까지 유입된 상태로 경화됨에 따라 상부강지보재의 하단부를 노출시키도록 상부쇼크리트층의 일부를 파쇄하는 작업은 매우 번거롭고, 작업과정에서 상부강지보재의 변형이나 손상이 수반되는 문제점이 있다.However, as the shockcrete of the upper shockcrete layer is hardened while being introduced not only to the outer periphery of the upper steel support material, but also to the space between the steel bars constituting the upper steel support material and the through hole of the connecting plate material, The operation of crushing a part of the upper shockcrete layer to expose the lower end is very cumbersome, and there is a problem that deformation or damage of the upper steel support member is accompanied in the operation process.

한편 특허문헌1에는, 상부강지보재의 연결판재에 형성된 관통공에 나사축이 나사결합되어 고정되는 구성, 상부강지보재에 설치된 나사축이 하부강지보재의 연결판재에 형성된 관통공을 관통한 채로 너트와 체결되면서 상부강지보재와 하부강지보재가 결속되는 구성, 그리고 스폰지 또는 스티로폼 또는 연질의 합성수지재로 이루어진 박리재가 나사축의 둘레면에 부착되는 구성이 개시되어 있다.On the other hand, in Patent Document 1, the screw shaft is screwed and fixed to the through hole formed in the connecting plate of the upper steel support member, and the screw shaft installed in the upper steel support member passes through the through hole formed in the connecting plate of the lower steel support member. and a configuration in which an upper steel support member and a lower steel support member are bound while being fastened, and a configuration in which a release material made of sponge or styrofoam or a soft synthetic resin material is attached to the circumferential surface of the screw shaft is disclosed.

이러한 특허문헌1은 나사축의 노출을 위한 상부쇼크리트층의 파쇄 시 상부쇼크리트층의 파쇄부위를 감소시킬 수 있으므로, 작업이 용이하고, 나사축이나 상부강지보재의 손상 없이 작업을 실시할 수 있는 장점이 있다.This patent document 1 can reduce the crushing portion of the upper shockcrete layer when crushing the upper shockcrete layer for exposing the screw shaft, so that the operation is easy, and the operation can be performed without damage to the screw shaft or the upper steel support member. There are advantages.

그러나, 특허문헌1에 개시된 강지보재 그리고 종래 일반적으로 사용되고 있는 강지보재는 상부강지보재와 하부강지보재가 단순히 볼트에 의해서만 서로 결속된 상태를 유지하게 되므로, 상부강지보재와 하부강지보재의 거동 차이로 인해 상부강지보재와 하부강지보재의 사이에 전단력이 발생될 경우, 볼트가 쉽게 절손될 수 있으며, 볼트의 절손 시 상부강지보재와 하부강지보재 사이의 결속구조가 와해되면서 터널 내부 보강구조가 취약해지게 되는 문제점이 있다.However, in the steel support material disclosed in Patent Document 1 and the steel support material generally used in the prior art, the upper steel support material and the lower steel support material maintain a state in which the upper steel support material and the lower steel support material are bound to each other only by bolts. Due to this, if shear force is generated between the upper and lower steel support members, the bolt can be easily broken. There is a problem to lose.

등록특허공보 제10-1538475호(2015.07.22.공고)Registered Patent Publication No. 10-1538475 (2015.07.22. Announcement)

본 발명은 상기와 같은 문제점을 고려하여 이루어진 것으로, 본 발명의 목적은 터널의 굴착면을 따라 연장되는 강지보재를 구성하기 위한 다수의 격자지보를 보다 견고한 구조로 결속할 수 있는 겹이음 방식의 보강형 결합부를 구비하는 강지보재를 제공함에 있다.The present invention has been made in consideration of the above problems, and an object of the present invention is to reinforce the lap joint method that can bind a plurality of grid supports to form a steel support member extending along the excavation surface of the tunnel in a more robust structure. An object of the present invention is to provide a steel support member having a mold coupling part.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은 평행하게 배치된 3개 이상의 강봉이 연결부재에 의해 서로 연결된 것으로 구성되며, 터널의 굴착면을 따라 연장되는 구조를 형성하도록 서로 결합되는 다수의 격자지보; 상기 격자지보의 측면 방향으로 돌출되게 형성된 하나 이상의 판재로 이루어진 지지체; 및 결합시키고자 하는 두 격자지보 중 일측 격자지보의 지지체와 타측 격자지보의 지지체를 연결하여 결속시키도록 이루어지되, 일부분이 일측 격자지보와 일정구간에 걸쳐 겹쳐지는 구간을 형성하도록 이루어지고, 다른 일부분이 타측 격자지보와 일정구간에 걸쳐 겹쳐지는 구간을 형성하도록 이루어져 지지체와 함께 겹이음 방식의 보강형 결합부를 형성하는 체결구;로 구성된 것을 특징으로 하는 겹이음 방식의 보강형 결합부를 구비하는 강지보재를 제공한다.The present invention, which achieves the object as described above and performs the task for eliminating the drawbacks of the prior art, consists of three or more steel rods arranged in parallel connected to each other by a connecting member, and has a structure extending along the excavation surface of the tunnel A plurality of lattice supports coupled to each other to form a; a support made of one or more plates formed to protrude in the lateral direction of the grid support; And it is made to connect and bind the support of one grid support and the support of the other grid support among the two grid supports to be coupled, a part is made to form a section overlapping with one grid support over a certain section, the other part A fastener having a reinforcing coupling part of a lap splicing method, characterized in that it comprises a fastener that forms a section overlapping with the other grid support over a certain section and forms a reinforcing coupling part of the lap splicing method with the support. provides

한편 상기 겹이음 방식의 보강형 결합부를 구비하는 강지보재에 있어서, 상기 지지체는, 격자지보와 격자지보의 연결 시 서로 마주한 채로 밀착되도록 격자지보의 단부에서 측면방향으로 돌출되게 설치되며, 상기 체결구가 관통하는 제1관통공이 형성된 것으로 이루어진 제1지지판재; 및 상기 제1지지판재로부터 격자지보의 내측방향으로 이격된 곳에서 격자지보로부터 측면방향으로 돌출되게 설치되며, 상기 체결구가 관통하는 제2관통공이 형성된 것으로 이루어진 제2지지판재;로 구성될 수 있다.On the other hand, in the steel support material having a reinforcing coupling part of the double-joint method, the support is installed to protrude from the end of the grid support in the lateral direction so as to be in close contact with each other when the grid support and the grid support are connected, and the fastener a first support plate material having a first through hole through it; and a second support plate which is installed to protrude from the grid support in the lateral direction at a place spaced apart from the first support plate in the inner direction of the grid support, and has a second through hole through which the fastener passes; have.

한편 상기 겹이음 방식의 보강형 결합부를 구비하는 강지보재에 있어서, 상기 체결구는, 결합시키고자 하는 두 격자지보 중 일측 격자지보에 설치된 제2지지판재의 제2관통공과 제1지지판재의 제1관통공을 순차적으로 관통하도록 설치되며 제1관통공을 관통하여 돌출되는 돌출단부가 타측 격자지보와 겹침구간을 형성하도록 연장되게 형성된 제1고정볼트; 상기 제1고정볼트를 제1지지판재에 고정하거나, 서로 마주하여 밀착된 두 제1지지판재를 가압하여 고정하기 위하여 제1지지판재에 인접한 곳에 위치하도록 제1고정볼트에 체결되는 고정너트; 두 격자지보의 결합 시 마주하여 밀착되는 두 제1지지판재 중 어느 한 제1지지판재에 용접되어 고정되며, 제1관통공을 관통하여 돌출되는 제1고정볼트의 돌출단부가 삽입되어 결합되는 암나사공이 형성된 커플러; 및 상기 타측 격자지보의 제2지지판재에 형성된 제2관통공으로부터 삽입되며, 상기 커플러에 형성된 암나사공에 체결되는 제2고정볼트;로 구성될 수 있다.On the other hand, in the steel support material having the reinforcing coupling part of the lap joint method, the fastener includes a second through hole of the second support plate installed on one grid support among the two grid supports to be coupled and the first of the first support plate material. a first fixing bolt installed to sequentially pass through the through-holes and having a protruding end protruding through the first through-holes to extend to form an overlapping section with the other grid support; a fixing nut fastened to the first fixing bolt so as to be positioned adjacent to the first supporting plate to fix the first fixing bolt to the first supporting plate or to press and fix the two first supporting plate members facing each other; When the two grid supports are combined, they are welded to and fixed to one of the two first support plates that are in close contact with each other, and the protruding end of the first fixing bolt protruding through the first through hole is inserted and coupled with a female screw ball-formed coupler; and a second fixing bolt inserted from the second through hole formed in the second support plate of the other side grid support and fastened to the female screw hole formed in the coupler.

한편 상기 겹이음 방식의 보강형 결합부를 구비하는 강지보재에 있어서, 상기 체결구는, 결합시키고자 하는 두 격자지보 중 일측 격자지보에 설치된 제2지지판재의 제2관통공과 제1지지판재의 제1관통공을 순차적으로 관통하도록 설치되며 제1관통공을 관통하여 돌출되는 돌출단부가 타측 격자지보와 겹침구간을 형성하도록 연장되게 형성된 제1고정볼트; 상기 제1고정볼트를 제1지지판재에 고정하거나, 서로 마주하여 밀착된 두 제1지지판재를 가압하여 고정하기 위하여 제1지지판재에 인접한 곳에 위치하도록 제1고정볼트에 체결되는 고정너트; 및 상기 타측 격자지보의 제2지지판재에 형성된 제2관통공으로부터 삽입되며, 제1관통공을 관통하여 돌출되는 제1고정볼트의 돌출단부가 삽입되어 결합되는 암나사공이 끝단부에 형성되어 제1고정볼트와 결합되는 커플링 볼트;로 구성될 수 있다.On the other hand, in the steel support material having the reinforcing coupling part of the lap joint method, the fastener includes a second through hole of the second support plate installed on one grid support among the two grid supports to be coupled and the first of the first support plate material. a first fixing bolt installed to sequentially pass through the through-holes and having a protruding end protruding through the first through-holes to extend to form an overlapping section with the other grid support; a fixing nut fastened to the first fixing bolt so as to be positioned adjacent to the first supporting plate to fix the first fixing bolt to the first supporting plate or to press and fix the two first supporting plate members facing each other; and a female threaded hole inserted from a second through hole formed in the second support plate of the other side grid support, and the protruding end of the first fixing bolt protruding through the first through hole is inserted and coupled is formed at the end of the first It may consist of a coupling bolt coupled to the fixing bolt.

상기와 같은 특징을 갖는 본 발명에 의하면, 지지체와 체결구가 격자지보 간의 연결부에 겹이음 구조를 형성한 채로 쇼크리크에 매립되어 강지보재의 변형을 억제하는 지지구조를 형성하게 되므로 보다 우수한 강성의 강지보재를 구성할 수 있게 된다.According to the present invention having the above characteristics, the support and fasteners are buried in the shock creek while forming the overlapping structure at the connection part between the lattice support and form a support structure that suppresses the deformation of the steel support material, so that it has better rigidity. It is possible to compose a steel support material.

도 1 은 본 발명의 바람직한 실시예에 따른 강지보재가 터널 굴착면에 배치된 상태를 보인 예시도,
도 2 는 본 발명에 따른 강지보재를 구성하는 격자지보와 격자지보가 연결되기 전 상태를 보인 사시도,
도 3 은 본 발명에 따른 강지보재를 구성하는 격자지보와 격자지보가 연결된 후 상태를 보인 사시도,
도 4 는 'A'부 상세도,
도 5 는 본 발명에 따른 체결구의 또 다른 구조를 보인 예시도.1 is an exemplary view showing a state in which a steel support member according to a preferred embodiment of the present invention is disposed on a tunnel excavation surface;
2 is a perspective view showing a state before the grid support and the grid support constituting the steel support according to the present invention are connected;
3 is a perspective view showing a state after the grid support and the grid support constituting the steel support according to the present invention are connected;
4 is a detailed view of part 'A';
5 is an exemplary view showing another structure of the fastener according to the present invention.

이하, 본 발명의 바람직한 실시예를 첨부된 도면과 연계하여 상세히 설명하면 다음과 같다. 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail in conjunction with the accompanying drawings. In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

도 1은 본 발명의 바람직한 실시예에 따른 강지보재가 터널 굴착면에 배치된 상태를 보인 예시도를, 도 2는 본 발명에 따른 강지보재를 구성하는 격자지보와 격자지보가 연결되기 전 상태를 보인 사시도를, 도 3은 본 발명에 따른 강지보재를 구성하는 격자지보와 격자지보가 연결된 후 상태를 보인 사시도를, 도 4는 'A'부 상세도를 도시하고 있다.1 is an exemplary view showing a state in which a steel support member according to a preferred embodiment of the present invention is disposed on a tunnel excavation surface, and FIG. 2 is a state before the grid support and the grid support constituting the steel support member according to the present invention are connected. 3 is a perspective view showing a state after the grid support and grid support constituting the steel support material according to the present invention are connected, and FIG. 4 is a detailed view of part 'A'.

본 발명에 따른 겹이음 방식의 보강형 결합부를 구비하는 강지보재는 격자지보(110)와 지지체(120) 및 체결구(130)로 구성되며, 다수의 격자지보(110)가 지지체(120) 및 체결구(130)에 의해 서로 연결되면서 터널 굴착면을 따라 연장되는 구조를 형성하도록 이루어진다.The steel support material having a reinforcing coupling part of the lap joint method according to the present invention is composed of a grid support 110, a support 120, and a fastener 130, and a plurality of grid support 110 includes a support 120 and It is made to form a structure extending along the tunnel excavation surface while being connected to each other by the fasteners (130).

상기 격자지보(110)는 단독 또는 2개 이상이 연결되어 상부강지보재(10) 또는 하부강지보재(20)를 구성하는 것으로, 서로 평행한 구조를 갖도록 배치되는 3개 이상의 강봉(111)이 연결부재(112)를 매개로 서로 결합된 것으로 이루어지되, 각각의 격자지보(110)는 시공하고자 하는 터널의 굴착면 형상에 대응하여 굽어진 구조를 갖도록 형성된다.The grid support 110 is singly or two or more connected to constitute the upper steel support member 10 or the lower steel support member 20, and three or more steel bars 111 arranged to have a structure parallel to each other are connected. Doedoe coupled to each other via the member 112, each lattice support 110 is formed to have a curved structure corresponding to the shape of the excavation surface of the tunnel to be constructed.

한편, 본 발명의 바람직한 실시예에 따른 격자지보(110)는 평행한 3개의 강봉(111)이 삼각형의 구조로 배치되고, 이러한 3개의 강봉(111)을 서로 연결하도록 굽어지게 형성된 연결부재(112)가 3개의 강봉(111)과 용접되어 결합된 것으로 이루어지며, 상기 연결부재(112)는 다수개가 강봉(111)의 길이방향으로 분산되게 배치된다.On the other hand, in the grid support 110 according to the preferred embodiment of the present invention, three parallel steel rods 111 are arranged in a triangular structure, and the connecting member 112 formed to be bent to connect these three steel rods 111 to each other. ) is welded to three steel rods 111 and joined, and a plurality of the connecting members 112 are disposed to be dispersed in the longitudinal direction of the steel rods 111 .

또한, 본 발명의 바람직한 실시예에 따른 강지보재는 2개의 격자지보(110)가 결합되어 하나의 상부강지보재(10)를 구성하고, 상부강지보재(10)의 좌우 양단에 각각 하나의 격자지보(110)가 결합되어 하부강지보재(20)를 구성하도록 이루어진다.In addition, in the steel support material according to a preferred embodiment of the present invention, two grid support members 110 are combined to form one upper steel support member 10 , and one grid support member is provided at both left and right ends of the upper steel support member 10 , respectively. (110) is coupled to constitute the lower steel support member (20).

상기 지지체(120)는 격자지보(110)에 설치되어 체결구(130)와 함께 격자지보(110)를 서로 연결하는 결속구조를 형성하는 것으로, 격자지보(110)의 끝단부에 설치되는 제1지지판재(121)와, 상기 제1지지판재(121)로부터 격자지보(110)의 내측방향으로 이격된 곳에 위치하도록 격자지보(110)에 설치되는 제2지지판재(122)로 구성된다.The support 120 is installed on the grid support 110 to form a binding structure that connects the grid support 110 together with the fastener 130, and is installed at the end of the grid support 110. It is composed of a support plate 121 and a second support plate 122 installed on the grid support 110 so as to be positioned at a location spaced apart from the first support plate 121 in the inward direction of the grid support 110 .

상기 제1지지판재(121)는 격자지보(110)를 구성하는 강봉(111)에 밀착된 채로 용접되어 고정되는 고정판(1211)과, 격자지보(110)의 끝단부에서 고정판(1211)과 직교하면서 격자지보(110)의 측면방향으로 돌출되는 지지판(1212)으로 구성되며, 두 격자지보(110)의 결합 시 각 격자지보(110)의 단부에 설치된 지지판(1212)이 서로 마주한 채로 밀착되도록 구성된다.The first support plate member 121 is orthogonal to a fixing plate 1211 that is welded and fixed in close contact with the steel rods 111 constituting the grid support 110 and the fixing plate 1211 at the end of the grid support 110 . It is composed of a support plate 1212 protruding in the lateral direction of the grid support 110, and the support plate 1212 installed at the end of each grid support 110 when the two grid support 110 is combined is configured to be in close contact with each other while facing each other. do.

한편, 격자지보(110)의 끝단부에 설치되는 지지판(1212)에는 체결구(130)가 관통하는 제1관통공(123)이 형성되며, 두 격자지보(110)의 결합 시 마주하여 밀착된 두 지지판(1212)에 형성된 제1관통공(123)은 하나의 연속된 구멍을 형성하도록 같은 위치에 형성된다.On the other hand, a first through hole 123 through which the fastener 130 penetrates is formed in the support plate 1212 installed at the end of the grid support 110 , and when the two grid supports 110 are combined, they face each other and are in close contact. The first through-holes 123 formed in the two support plates 1212 are formed at the same position to form one continuous hole.

이와 같이 고정판(1211)과 지지판(1212)으로 구성된 제1지지판재(121)는 격자지보(110)의 끝단부 좌우 양측에 각각 위치하도록 설치되며, 격자지보(110)의 끝단부 좌우 양측에 설치되는 2개의 제1지지판재(121)는 격자지보(110)의 중심을 기준으로 상호 대칭되는 구조를 갖도록 설치된다.As described above, the first support plate material 121 composed of the fixed plate 1211 and the support plate 1212 is installed to be positioned on both left and right sides of the end of the grid support 110, respectively, and installed on the left and right sides of the end of the grid support 110 The two first support plate members 121 are installed to have a mutually symmetrical structure with respect to the center of the grid support 110 .

상기 제2지지판재(122)는 격자지보(110)의 끝단부로부터 내측방향으로 이격된 위치에서 격자지보(110)의 측면방향으로 돌출되게 설치되는 판재로 이루어지며, 체결구(130)가 관통하는 제2관통공(124)이 형성된 것으로 구성된다.The second support plate 122 is made of a plate that is installed to protrude in the lateral direction of the grid support 110 at a position spaced inward from the end of the grid support 110, and the fastener 130 passes through. It is configured that the second through-hole 124 is formed.

한편, 상기 제2지지판재(122)는 격자지보(110)의 좌우 양측으로 돌출되는 상기 지지판(1212)과 동일하게 격자지보(110)의 좌우 양측으로 돌출되도록 격자지보(110)에 설치되며, 상기 제2관통공(124)은 그 중심이 제1관통공(123)의 중심과 일치하도록 형성되어 제2관통공(124)을 통해 삽입되는 체결구(130)가 제2관통공(124)과 제1관통공(123)을 순차적으로 관통하도록 구성된다.On the other hand, the second support plate member 122 is installed on the grid support 110 so as to protrude to the left and right sides of the grid support 110 in the same way as the support plate 1212 protruding to the left and right sides of the grid support 110, The second through-hole 124 is formed so that its center coincides with the center of the first through-hole 123 so that the fastener 130 inserted through the second through-hole 124 is provided with the second through-hole 124 . and the first through-hole 123 is configured to sequentially pass through.

이와 같이 구성되는 제2지지판재(122)는 하나의 판재가 격자지보(110)를 관통하되, 양끝단이 격자지보(110)의 좌우 양측으로 돌출되게 설치한 것으로 구성될 수 있으며, 격자지보(110)에 용접되어 고정되거나, 연결부재(112)와 고정판(1211)의 사이에 끼워지는 형태로 격자지보(110)에 분리 가능한 구조로 결합될 수 있다.The second support plate 122 configured in this way may be configured such that one plate passes through the grid support 110, but both ends are installed to protrude to the left and right sides of the grid support 110, and the grid support ( It may be welded and fixed to 110 , or may be coupled to the grid support 110 in a separable structure to be sandwiched between the connecting member 112 and the fixing plate 1211 .

상기 체결구(130)는 두 격자지보(110)에 형성된 지지체(120)를 서로 결속시켜 두 격자지보(110)를 결합시키는 것으로, 제1고정볼트(131)와, 고정너트(132)와, 커플러(133)와, 제2고정볼트(134)로 구성된다.The fastener 130 binds the supports 120 formed on the two grid supports 110 to each other to couple the two grid supports 110, a first fixing bolt 131, a fixing nut 132, It is composed of a coupler 133 and a second fixing bolt 134 .

상기 제1고정볼트(131)는 결합시키고자 하는 두 격자지보(110) 중 일측 격자지보(110)에 설치된 제2지지판재(122)의 제2관통공(124)과 해당 격자지보(110)의 제1지지판재(121)에 형성된 제1관통공(123) 그리고 타측 격자지보(110)의 제1지지판재(121)에 형성된 제1관통공(123)을 순차적으로 관통하여 돌출될 수 있도록 충분히 긴 길이를 갖는 장볼트로 구성된다.The first fixing bolt 131 is a second through hole 124 of the second support plate 122 installed on one grid support 110 among the two grid support 110 to be coupled and the corresponding grid support 110. The first through-hole 123 formed in the first support plate 121 of the lattice support 110 and the first through-hole 123 formed in the first support plate 121 of the other grid support 110 are sequentially penetrated so as to protrude. It consists of long bolts of sufficiently long length.

이와 같이 장볼트로 구성되는 제1고정볼트(131)는 일측 격자지보(110)의 제2관통공(124)과 제1관통공(123)을 관통하도록 배치되어 해당 격자지보(110)와 겹침구간을 형성하고, 타측 격자지보(110)의 제1관통공(123)을 관통하여 돌출되면서 타측 격자지보(110)와 겹침구간을 형성하도록 이루어진다.As described above, the first fixing bolt 131 composed of a long bolt is disposed to penetrate the second through hole 124 and the first through hole 123 of the one side grid support 110 and overlaps with the corresponding grid support 110 . The section is formed and protrudes through the first through hole 123 of the other grid support 110 to form an overlapping section with the other grid support 110 .

상기 고정너트(132)는 제1고정볼트(131)에 체결되되, 제1지지판재(121)의 인접한 곳에 위치하도록 제1고정볼트(131)에 체결되어 제1고정볼트(131)를 제1지지판재(121)에 고정하거나 서로 마주하여 밀착된 두 제1지지판재(121)를 가압하여 고정하는 기능을 제공하도록 구성된다.The fixing nut 132 is fastened to the first fixing bolt 131 , and is fastened to the first fixing bolt 131 so as to be positioned adjacent to the first supporting plate 121 so as to attach the first fixing bolt 131 to the first fixing nut 132 . It is configured to provide a function of fixing to the support plate 121 or pressing the two first support plate members 121 in close contact with each other.

한편, 상기 고정너트(132)는 단독으로 기능하지 못하며, 2개의 고정너트(132)가 조합되어 사용되거나 커플러(133)와 조합되어 사용되면서 제1고정볼트(131)를 제1지지판재(121)에 고정하거나, 서로 마주하여 밀착된 두 제1지지판재(121)를 가압하여 고정하게 된다.On the other hand, the fixing nut 132 does not function alone, and two fixing nuts 132 are used in combination or are used in combination with the coupler 133 , and the first fixing bolt 131 is used in combination with the first support plate material 121 . ), or by pressing the two first support plate members 121 that are in close contact with each other and are fixed.

상기 커플러(133)는 제1관통공(123)을 관통하여 돌출되는 제1고정볼트(131)와 체결되는 것으로, 두 격자지보(110)의 결합 시 마주하여 밀착되는 두 제1지지판재(121) 중 어느 한 제1지지판재(121)에 용접되어 고정되며, 제1관통공(123)을 관통하여 돌출되는 제1고정볼트(131)의 돌출단부가 삽입되어 체결되는 암나사공이 일측단에 형성되고, 제2고정볼트(134)가 체결되는 또 다른 암나사공이 타측단에 형성된 것으로 구성된다.The coupler 133 is fastened with the first fixing bolt 131 protruding through the first through hole 123 , and the two first supporting plate members 121 that are in close contact with each other when the two grid supports 110 are combined. ) is welded to and fixed to any one of the first support plate 121, and the protruding end of the first fixing bolt 131 protruding through the first through hole 123 is inserted and fastened with a female screw hole formed at one end. and another female screw hole to which the second fixing bolt 134 is fastened is formed at the other end.

한편, 상기 커플러(133)의 양 끝단에 형성되는 암나사공은 서로 연결되어 커플러(133)를 관통하는 하나의 암나사공으로 구성될 수도 있다.Meanwhile, the female threaded holes formed at both ends of the coupler 133 may be connected to each other and configured as a single female threaded hole passing through the coupler 133 .

상기 제2고정볼트(134)는 커플러(133)를 사이에 두고 제1고정볼트(131)와 마주하도록 타측 격자지보(110)에 설치된다.The second fixing bolt 134 is installed on the other side grid support 110 to face the first fixing bolt 131 with the coupler 133 interposed therebetween.

보다 구체적으로, 상기 제2고정볼트(134)는 타측 격자지보(110)의 제2지지판재(122)에 형성된 제2관통공(124)을 관통하도록 배치되며, 제2지지판재(122)를 관통하여 돌출되는 단부가 커플러(133)의 암나사공에 체결되어 고정되도록 구성된다.More specifically, the second fixing bolt 134 is disposed to penetrate the second through hole 124 formed in the second support plate 122 of the other side grid support 110, and the second support plate 122 is The end protruding through it is fastened to the female screw hole of the coupler 133 and is configured to be fixed.

이하에서는 상기와 같이 구성된 겹이음 방식의 보강형 결합부를 구비하는 강지보재를 터널 굴착면에 설치하는 과정을 설명하되, 상부강지보재(10)는 2개의 격자지보(110)가 결합되어 형성되고, 하부강지보재(20)는 하나의 격자지보(110)로 이루어진 것으로 가정하며, 상단의 1차 굴착과 하단의 2차 굴착에 의한 단계적인 굴착을 통해 터널을 굴착하는 것으로 가정하여 설명하도록 한다.Hereinafter, the process of installing a steel support member having a reinforcing coupling portion of the lap joint method configured as described above on the tunnel excavation surface will be described, but the upper steel support member 10 is formed by combining two grid support members 110, It is assumed that the lower steel support member 20 is composed of one grid support 110, and it is assumed that the tunnel is excavated through step-by-step excavation by primary excavation at the top and secondary excavation at the bottom.

발파굴착 또는 기계굴착에 의해 1차 굴착부의 굴착이 완료되면, 준비된 2개의 격자지보(110)를 1차 굴착부의 굴착면에 배치하되, 2개의 격자지보(110)를 서로 연결시켜 상부강지보재(10)를 구성하게 된다.When the excavation of the primary excavation is completed by blast excavation or mechanical excavation, the prepared two lattice supports 110 are placed on the excavation surface of the primary excavation part, but the two lattice supports 110 are connected to each other and the upper steel supporting member ( 10) is formed.

한편, 격자지보(110)와 격자지보(110)를 연결시키기 위하여 먼저 두 격자지보(110)의 일측단에 설치된 제1지지판재(121)가 서로 마주한 채로 밀착되도록 두 격자지보(110)를 배치하고, 제1고정볼트(131)가 일측 격자지보(110)에 마련된 제2지지판재(122), 그리고 서로 마주하여 밀착된 2개의 제1지지판재(121)를 순차적으로 관통하여 일측 제1지지판재(121)에 설치된 커플러(133)에 체결하게 된다.On the other hand, in order to connect the grid support 110 and the grid support 110, first, the first support plate 121 installed at one end of the two grid support 110 is placed in close contact with each other while facing each other. and the first fixing bolt 131 sequentially penetrates the second support plate 122 provided on one side of the grid support 110, and the two first support plates 121 that are in close contact with each other to face the first support on one side. It is fastened to the coupler 133 installed on the plate 121 .

상기와 같이 제1고정볼트(131)를 설치함에 있어서, 커플러(133)가 용접되어 고정되지 않은 제1지지판재(121)의 인접 위치에 고정너트(132)가 위치하도록 제1고정너트(132)를 제1고정볼트(131)에 체결하게 된다.In installing the first fixing bolt 131 as described above, the first fixing nut 132 is positioned so that the fixing nut 132 is positioned adjacent to the first supporting plate 121 to which the coupler 133 is not fixed. ) is fastened to the first fixing bolt 131 .

따라서, 서로 밀착된 2개의 제1지지판재(121)는 고정너트(132)와 커플러(133)에 의해 가압 고정된다.Accordingly, the two first support plate members 121 in close contact with each other are press-fixed by the fixing nut 132 and the coupler 133 .

이후 제2고정볼트(134)를 타측 격자지보(110)에 조립하되, 제2고정볼트(134)가 타측 격자지보(110)에 설치된 제2지지판재(122)의 제2관통공(124)을 관통하여 커플러(133)에 체결되도록 함으로써 두 격자지보(110)는 결속된다.After assembling the second fixing bolt 134 to the other side grid support 110 , the second fixing bolt 134 is installed on the other side grid support 110 , and the second through hole 124 of the second support plate 122 installed on the other side grid support 110 . The two lattice supports 110 are bound by passing through and fastening to the coupler 133 .

이와 같이 커플러(133)를 매개로 서로 연결되어 두 격자지보(110)를 결속하는 제1고정볼트(131)와 제2고정볼트(134)는 두 격자지보(110)와 일정구간에 걸쳐 겹침구간을 형성하게 되며, 이러한 상태로 쇼크리트층에 매립되므로 격자지보(110)와 격자지보(110)의 연결부에 대한 강성을 현저히 향상시킬 수 있게 된다.In this way, the first fixing bolt 131 and the second fixing bolt 134 that are connected to each other through the coupler 133 to bind the two grid supports 110 are overlapped with the two grid supports 110 over a predetermined section. is formed, and since it is buried in the shockcrete layer in this state, the rigidity of the grid support 110 and the connection part of the grid support 110 can be remarkably improved.

상기와 같이 2개의 격자지보(110)를 조립하여 상부강지보재(10)를 구성하는 과정에서 1차 굴착부의 바닥에 근접한 격자지보(110)의 단부에 제1고정볼트(131)를 설치하여 상부강지보재(10)를 요구되는 높이에서 지지하게 된다.In the process of assembling the two grid supports 110 to form the upper steel support member 10 as described above, the first fixing bolt 131 is installed at the end of the grid support 110 close to the bottom of the primary excavation part to install the upper part. The steel support member 10 is supported at a required height.

보다 구체적으로, 1차 굴착부의 바닥에 근접한 상부강지보재(10)의 단부에 제1고정볼트(131)를 설치하되, 제1고정볼트(131)가 제2지지판재(122)와 제1지지판재(121)를 순차적으로 관통하도록 하고, 2개의 고정너트(132)가 제1지지판재(121)의 양측에 위치하도록 제1고정볼트(131)에 체결하여 제1고정볼트(131)를 제1지지판재(121)에 고정하게 되며, 이후 제1고정볼트(131)의 하단부에 후술될 커플링 볼트(135)를 체결하되, 1차 굴착부의 울퉁불퉁한 바닥에 대응하여 커플링 볼트(135)의 위치를 조절함으로써 상부강지보재(10)의 높이를 조절할 수 있다.More specifically, a first fixing bolt 131 is installed at the end of the upper steel support member 10 close to the bottom of the primary excavation part, and the first fixing bolt 131 is connected to the second supporting plate member 122 and the first supporting member. The first fixing bolts 131 are manufactured by fastening the first fixing bolts 131 so as to sequentially penetrate the plate 121 and the two fixing nuts 132 are positioned on both sides of the first supporting plate 121 . 1 is fixed to the support plate 121, and then the coupling bolt 135 to be described later is fastened to the lower end of the first fixing bolt 131, but the coupling bolt 135 corresponds to the uneven floor of the primary excavation part. By adjusting the position of the upper steel support member 10 can be adjusted in height.

상기와 같은 과정을 통해 1차 굴착부의 굴착면에 상부강지보재(10)의 배치가 완료되면, 상부강지보재(10)가 매립되도록 쇼크리트를 타설하고 양생함으로써 1차 굴착부에 대한 내부 보강이 완료된다.When the arrangement of the upper steel support member 10 on the excavation surface of the primary excavation unit is completed through the above process, the internal reinforcement for the primary excavation unit is reinforced by pouring and curing the shockcrete so that the upper steel supporting member 10 is buried. is done

상기 1차 굴착부에 대한 내부 보강이 완료되면, 1차 굴착부의 하부를 굴착하여 2차 굴착부를 형성하고 2차 굴착부의 내부 보강작업을 실시하게 된다.When the internal reinforcement of the primary excavation is completed, the lower part of the primary excavation is excavated to form the secondary excavation, and internal reinforcement of the secondary excavation is performed.

한편, 2차 굴착부를 굴착하는 과정에서 상부강지보재(10)의 좌우 양단에 설치된 커플링 볼트(135)가 노출되도록 상부쇼크리트층의 일부를 파쇄하는 작업이 실시하게 되며, 커플링 볼트(135)를 제1고정볼트(131)로부터 분리하게 된다.On the other hand, in the process of excavating the secondary excavation part, the operation of crushing a part of the upper shockcrete layer is carried out so that the coupling bolts 135 installed at both ends of the upper steel support member 10 are exposed, and the coupling bolts 135 ) is separated from the first fixing bolt 131 .

2차 굴착부의 내부 보강은 하부강지보재(20)를 구성하는 격자지보(110)를 상부강지보재(10)의 좌우 양측단부에 각각 연결되게 설치하고, 하부강지보재(20)가 매립되도록 쇼크리트를 타설하는 것으로 이루어진다.For the internal reinforcement of the secondary excavation part, the lattice support 110 constituting the lower steel support member 20 is installed to be connected to the left and right side ends of the upper steel support member 10, respectively, and the lower steel support member 20 is buried in shockcrete. is made by pouring

한편, 상부강지보재(10)와 하부강지보재(20)의 연결을 위해 상부강지보재(10)의 제1지지판재(121) 하부에 위치한 고정너트(132)를 제1고정볼트(131)로부터 분리한 후, 하부강지보재(20)에 마련된 제1지지판재(121)가 상부강지보재(10)에 마련된 제1지지판재(121)에 밀착되도록 하부강지보재(20)를 배치한 후, 앞서 설명된 것과 동일한 방식으로 고정너트(132)를 제1고정볼트(131)에 체결하고, 제1고정볼트(131)의 돌출단부를 커플러(133)에 체결하며, 제2고정볼트(134)가 하부강지보재(20)를 구성하는 격자지보(110)의 제2지지판재(122)를 관통하여 커플러(133)에 체결되게 함으로써 상부강지보재(10)와 하부강지보재(20)를 결속하게 되며, 이와 같은 작업을 통해 상부강지보재(10)와 하부강지보재(20)의 결속이 완료되면, 쇼크리트를 타설하여 하부쇼크리트층을 형성하게 된다.On the other hand, in order to connect the upper steel support member 10 and the lower steel support member 20, the fixing nut 132 located under the first support plate 121 of the upper steel support 10 is removed from the first fixing bolt 131. After separation, the lower steel support member 20 is disposed so that the first support plate member 121 provided in the lower steel support member 20 is in close contact with the first support plate member 121 provided in the upper steel support member 10. Fastening the fixing nut 132 to the first fixing bolt 131 in the same manner as described, and fastening the protruding end of the first fixing bolt 131 to the coupler 133, and the second fixing bolt 134 is By penetrating the second support plate 122 of the grid support 110 constituting the lower steel support 20 and being fastened to the coupler 133, the upper steel support 10 and the lower steel support 20 are bound. , When the binding of the upper steel support member 10 and the lower steel support member 20 is completed through this operation, the lower shockcrete layer is formed by pouring the shockcrete.

이상에서 설명된 바와 같이, 본 발명은 상부강지보재(10)를 구성하는 격자지보(110) 간의 연결부 그리고 상부강지보재(10)와 하부강지보재(20)의 연결부에 지지체(120)와 체결구(130)를 이용한 겹이음 구조가 형성됨에 따라 격자지보(110) 간의 연결부에 대한 강성을 현저히 향상시킬 수 있게 된다.As described above, the present invention provides a support 120 and a fastener at the connection part between the grid supports 110 constituting the upper steel support member 10 and at the connection part between the upper steel support member 10 and the lower steel support member 20 . As the lap joint structure using 130 is formed, it is possible to significantly improve the rigidity of the connection part between the grid supports 110 .

도 5는 본 발명에 따른 체결구의 또 다른 구조를 보인 예시도를 도시하고 있다.5 is an exemplary view showing another structure of the fastener according to the present invention.

상기 체결구(130)는 제1고정볼트(131)와 고정너트(132) 및 커플링 볼트(135)로 구성될 수 있다.The fastener 130 may include a first fixing bolt 131 , a fixing nut 132 , and a coupling bolt 135 .

이때 상기 제1고정볼트(131)와 고정너트(132)는 도 1 내지 도 4를 참조하여 설명된 제1고정볼트(131) 및 제2고정너트(132)와 동일하므로, 동일한 도면부호를 사용하며, 그 구성에 대한 구체적인 설명은 생략하도록 한다.At this time, since the first fixing bolt 131 and the fixing nut 132 are the same as the first fixing bolt 131 and the second fixing nut 132 described with reference to FIGS. 1 to 4 , the same reference numerals are used. and a detailed description of its configuration will be omitted.

한편, 상기 커플링 볼트(135)는 일반적인 볼트와 마찬가지로 두부와 축부로 이루어지되, 축부의 끝단부에 암사사공이 형성된 것으로 이루어지며, 상기 암나사공은 제1고정볼트(131)가 삽입되어 체결되도록 형성된다.On the other hand, the coupling bolt 135 is made of a head and a shaft part like a general bolt, and a female threaded hole is formed at the end of the shaft part, and the female threaded hole is a first fixing bolt 131 is inserted and fastened. is formed

이러한 커플링 볼트(135)는 두 격자지보(110)의 결속 시, 어느 한 격자지보(110)의 제2지지판재(122)에 형성된 제2관통공(124)으로부터 삽입되며, 제1지지판재(121)의 제1관통공(124)을 관통하여 돌출되는 제1고정볼트(131)의 돌출단부와 체결되면서 두 격자지보(110)를 결속하게 된다.These coupling bolts 135 are inserted from the second through-holes 124 formed in the second support plate 122 of any one grid support 110 when the two grid supports 110 are bound, and the first support plate material. The two lattice supports 110 are bound while being fastened with the protruding end of the first fixing bolt 131 protruding through the first through hole 124 of 121 .

한편, 제1고정볼트(131)의 돌출단부와 체결된 커플링 볼트(135)는 제1지지판재에 용접되어 고정될 수 있다.On the other hand, the coupling bolt 135 fastened to the protruding end of the first fixing bolt 131 may be fixed by welding to the first support plate.

이와 같이 구성된 체결구(130)는 보다 단순한 구조로 이루어지므로, 시공의 편의성을 더욱 향상시킬 수 있다.Since the fastener 130 configured as described above has a simpler structure, the convenience of construction can be further improved.

본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the specific preferred embodiments described above, and without departing from the gist of the present invention claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can implement various modifications Of course, such modifications are intended to be within the scope of the claims.

<도면의 주요 부분에 대한 부호의 설명>
110: 격자지보 111: 강봉
112: 연결부재 120: 지지체
121: 제1지지판재 122: 제2지지판재
123: 제1관통공 124: 제2관통공
130: 체결구 131: 제1고정볼트
132: 고정너트 133: 커플러
134: 제2고정볼트 135: 커플링 볼트<Explanation of symbols for main parts of the drawing>
110: grid support 111: steel bar
112: connecting member 120: support
121: first support plate 122: second support plate
123: first through hole 124: second through hole
130: fastener 131: first fixing bolt
132: fixing nut 133: coupler
134: second fixing bolt 135: coupling bolt

Claims (4)

평행하게 배치된 3개 이상의 강봉(111)이 연결부재(112)에 의해 서로 연결된 것으로 구성되며, 터널의 굴착면을 따라 연장되는 구조를 형성하도록 서로 결합되는 다수의 격자지보(110);
상기 격자지보(110)의 측면 방향으로 돌출되게 형성된 하나 이상의 판재로 이루어지되,
격자지보(110)와 격자지보(110)의 연결 시 서로 마주한 채로 밀착되도록 격자지보(110)의 단부에서 측면방향으로 돌출되게 설치되며, 체결구(130)가 관통하는 제1관통공(123)이 형성된 것으로 이루어진 제1지지판재(121); 및
상기 제1지지판재(121)로부터 격자지보(110)의 내측방향으로 이격된 곳에서 격자지보(110)로부터 측면방향으로 돌출되게 설치되며, 상기 체결구(130)가 관통하는 제2관통공(124)이 형성된 것으로 이루어진 제2지지판재(122);로 구성된 지지체(120);
결합시키고자 하는 두 격자지보(110) 중 일측 격자지보(110)에 설치된 제2지지판재(122)의 제2관통공(124)과 제1지지판재(121)의 제1관통공(123)을 순차적으로 관통하도록 설치되며 제1관통공(123)을 관통하여 돌출되는 돌출단부가 타측 격자지보(110)와 겹침구간을 형성하도록 연장되게 형성된 제1고정볼트(131)와,
상기 제1고정볼트(131)를 제1지지판재(121)에 고정하거나, 서로 마주하여 밀착된 두 제1지지판재(121)를 가압하여 고정하기 위하여 제1지지판재(121)에 인접한 곳에 위치하도록 제1고정볼트(131)에 체결되는 고정너트(132)와,
두 격자지보(110)의 결합 시 마주하여 밀착되는 두 제1지지판재(121) 중 어느 한 제1지지판재(121)에 고정되며, 제1관통공(123)을 관통하여 돌출되는 제1고정볼트(131)의 돌출단부가 삽입되어 결합되는 암나사공이 형성된 커플러(133) 및
상기 타측 격자지보(110)의 제2지지판재(122)에 형성된 제2관통 공(124)으로부터 삽입되며, 상기 커플러(133)에 형성된 암나사공에 체결되는 제2고정볼트(134)가 형성된 체결구(130);로 구성된 것을 특징으로 하는 겹이음 방식의 보강형 결합부를 구비하는 강지보재.A plurality of lattice support 110, which consists of three or more steel rods 111 arranged in parallel connected to each other by a connecting member 112, and coupled to each other to form a structure extending along the excavation surface of the tunnel;
Doedoe made of one or more plates formed to protrude in the lateral direction of the grid support 110,
When the grid support 110 and the grid support 110 are connected, they are installed to protrude from the end of the grid support 110 in the lateral direction so that they are in close contact with each other, and the first through hole 123 through which the fastener 130 penetrates. A first support plate member 121 made of this formed; and
A second through-hole ( 124) is formed of a second support plate member 122; a support body 120 consisting of;
The second through hole 124 of the second support plate 122 installed on one grid support 110 among the two grid support 110 to be coupled and the first through hole 123 of the first support plate 121 A first fixing bolt 131 that is installed to sequentially penetrate through the first through hole 123 and the protruding end protruding through the first through hole 123 extends to form an overlapping section with the other grid support 110,
The first fixing bolt 131 is fixed to the first support plate 121, or located adjacent to the first support plate 121 in order to press and fix the two first support plates 121 that are in close contact with each other. A fixing nut 132 fastened to the first fixing bolt 131 so as to
When the two grid supports 110 are combined, the first fixing plate is fixed to any one of the two first support plate members 121 that are in close contact with each other, and protrudes through the first through hole 123 . A coupler 133 having a female screw hole into which the protruding end of the bolt 131 is inserted and coupled; and
The second fixing bolt 134 inserted from the second through hole 124 formed in the second support plate 122 of the other grid support 110 and fastened to the female screw hole formed in the coupler 133 is formed. Sphere 130; Steel support having a reinforcing coupling portion of the lap joint method, characterized in that consisting of. 삭제delete 삭제delete 삭제delete
KR1020210072605A 2021-06-04 2021-06-04 Lattice girder with lap joint KR102314836B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050003728A (en) * 2003-07-04 2005-01-12 안태훈 The steel support dimension controlling method and space controlling connecter
KR101286570B1 (en) * 2012-09-03 2013-07-22 최두환 Timbering connection structure and timbering assembly for a tunnel including the same
KR101538475B1 (en) 2015-02-27 2015-07-22 유재찬 steel lattice girder and the method of constructing steel lattice girder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050003728A (en) * 2003-07-04 2005-01-12 안태훈 The steel support dimension controlling method and space controlling connecter
KR101286570B1 (en) * 2012-09-03 2013-07-22 최두환 Timbering connection structure and timbering assembly for a tunnel including the same
KR101538475B1 (en) 2015-02-27 2015-07-22 유재찬 steel lattice girder and the method of constructing steel lattice girder

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