KR20090106366A - Extile Reinforcement - Google Patents

Extile Reinforcement Download PDF

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Publication number
KR20090106366A
KR20090106366A KR1020090047586A KR20090047586A KR20090106366A KR 20090106366 A KR20090106366 A KR 20090106366A KR 1020090047586 A KR1020090047586 A KR 1020090047586A KR 20090047586 A KR20090047586 A KR 20090047586A KR 20090106366 A KR20090106366 A KR 20090106366A
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South Korea
Prior art keywords
fiber reinforcement
friction
fiber
reinforcing material
longitudinal direction
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KR1020090047586A
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Korean (ko)
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KR100954783B1 (en
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이장원
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라이브텍(주)
주식회사 에이치에스산업
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Priority to KR1020090047586A priority Critical patent/KR100954783B1/en
Publication of KR20090106366A publication Critical patent/KR20090106366A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/18—Making embankments, e.g. dikes, dams
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/085—Tensile members made of fiber reinforced plastics

Abstract

PURPOSE: A fiber reinforcement is provided to improve the stability of embankment for retaining wall construction and to prevent subsidence of soft ground. CONSTITUTION: A fiber reinforcement comprises a friction part(10) and a fastening part(20). The friction part includes a core with concavo-convex surface and gives the fiber reinforcement rigidity. The fastening part includes perforated holes(21) at regular intervals in the longitudinal direction and enhances coupling between soil. A cut-out part(30) is prepared in the longitudinal direction between the friction and the fastening part.

Description

섬유보강재{Extile Reinforcement}Textile Reinforcement

본 발명은 섬유보강재에 관한 것으로서, 더욱 상세하게는 옹벽 형성 과정 중 흙속에 매설되어 성토층의 안정성을 향상시키거나 연약 지반에 매설되어 침하를 방지할 수 있는 섬유보강재에 관한 것이다.The present invention relates to a fiber reinforcing material, and more particularly, to a fiber reinforcing material which is embedded in the soil during the retaining wall forming process to improve the stability of the fill layer or buried in the soft ground to prevent settlement.

복수의 블록이 상호 적층되어 형성되는 블록형 옹벽 구조물은 제방, 산비탈 등에서 흙의 흘러내림과 붕괴를 방지하기 위하여 사용된다. 각 블록에는 적층 방향을 조절할 수 있도록 돌출부와 오목부가 적절하게 배치되어 있어서 다양한 경사도를 만들 수 있다. A block retaining wall structure formed by stacking a plurality of blocks is used to prevent soil from falling down and collapsing in embankments, hillsides, and the like. In each block, protrusions and recesses are appropriately arranged to control the stacking direction so that various inclinations can be made.

적층되는 블록에는 지반의 인장강도를 보강하기 위해 띠 형상의 보강재가 설치된다. 보강재는 앵커나 앵커핀 등을 사용하여 블록에 고정되며, 지반에 길게 설치되어 지면과의 접촉면에서 발생하는 마찰력을 이용해서 인발되는 힘에 저항한다. The laminated blocks are provided with a strip-shaped reinforcement to reinforce the tensile strength of the ground. The reinforcement is fixed to the block using anchors or anchor pins, and is installed on the ground to resist the force drawn out by using frictional force generated on the contact surface with the ground.

그런데, 상술한 종래 보강재는 충분한 뒷길이를 갖지 못한다면 보강재와 지면 간의 결합력이 약해 옹벽 블록을 안전하게 지지하지 못하는 문제점이 있었다. 일부 보강재는 표면에 요철을 형성함으로써 흙과의 마찰을 높여 결합력을 향상시키지만, 이러한 정도로는 뒷길이 확보가 어려운 곳에서는 만족할 만한 마찰저항력을 형성하지 못하는 문제점이 있었다.However, the above-described conventional reinforcement has a problem in that the retaining wall block is not securely supported due to a weak coupling force between the reinforcement and the ground if it does not have a sufficient back length. Some reinforcing materials to improve the bonding strength by increasing the friction with the soil by forming the irregularities on the surface, there was a problem that can not form a satisfactory friction resistance in difficult to secure the back length to this extent.

본 발명은 상술한 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 흙과 보강재 사이의 결합력을 현저하게 증대시켜 옹벽의 안정성 향상 및 연약 지반에 사용할 수 있는 섬유보강재를 제공하는 데 있다.The present invention is to solve the above problems, an object of the present invention is to significantly increase the bonding force between the soil and the reinforcing material to improve the stability of the retaining wall and to provide a fiber reinforcement that can be used in soft ground.

상기 목적을 달성하기 위한 본 발명에 따른 섬유보강재는 옹벽 형성 과정 중 흙속에 매설되어 성토층의 안정성을 향상시키거나 연약 지반의 침하를 방지하는 섬유보강재에 있어서, 섬유보강재에 강성을 부여하는 마찰부와 흙간의 결합력을 증대시키는 결속부가 길이방향과 나란하게 번갈아 배치되되, 마찰부는 내부에 심재가 표면에 요철이 마련되고, 결속부는 소정 간격으로 길이방향을 따라 천공홀을 구비하며, 마찰부와 결속부 사이에는 길이방향으로 절취부가 마련되어 요구되는 인장강도에 따라 분리사용하며, 복수개 사용 시에는 클립으로 결속부의 천공홀을 연결한다. The fiber reinforcement according to the present invention for achieving the above object is buried in the soil during the retaining wall forming process to improve the stability of the fill layer or to prevent the settlement of the soft ground, friction part for providing rigidity to the fiber reinforcement The binding portion for increasing the bonding force between the soil and the earth is alternately arranged in parallel with the longitudinal direction, the core is provided with irregularities on the surface of the friction portion, the binding portion has a perforation hole along the longitudinal direction at predetermined intervals, A cutout part is provided in the longitudinal direction between the parts, and is separated and used according to the required tensile strength. In the case of using a plurality of parts, the perforation hole of the binding part is connected with a clip.

또한, 본 발명에 따른 섬유보강재의 상기 마찰부와 결속부는 단차를 가지되, 상기 결속부가 마찰부보다 낮은 높이를 갖는다. In addition, the friction portion and the binding portion of the fiber reinforcement according to the present invention has a step, the binding portion has a lower height than the friction portion.

또한, 본 발명에 따른 섬유보강재는 복수개를적층 사용 시 결속부의 천공홀이 교호로 적층되도록 한다. In addition, the fiber reinforcing material according to the present invention is such that when using a plurality of laminated holes of the binding portion alternately laminated.

본 발명에 따른 섬유보강재는 결속부의 천공홀을 통해 섬유보강재의 상하를 덮는 흙을 상호 접촉시킴으로써 흙간의 결합력이 증대되어 종래보다 짧은 길이로도 옹벽 구조물을 안정적으로 지지하게 된다. 또한, 섬유보강재의 길이방향과 나란히 마련되는 마찰부와 결속부가 서로 단차를 가지기 때문에 섬유보강재를 상하로 덮는 흙간의 결합력을 더욱 증가시키게 된다. The fiber reinforcing material according to the present invention by contacting the soil covering the upper and lower surfaces of the fiber reinforcing material through the drilling hole of the binding unit to increase the bonding force between the soil is to support the retaining wall structure even in a shorter length than before. In addition, since the friction part and the binding part provided in parallel with the longitudinal direction of the fiber reinforcement have a step with each other, the bonding force between the soil covering the fiber reinforcement up and down further increases.

또한, 본 발명에 따른 섬유보강재는 복수개를 나란히 배치한 후 이웃하는 섬유보강재를 클립을 통해 연결함으로써 연약 지반 침하를 방지하는데 사용하는 지오그리드로도 활용될 수 있다. In addition, the fiber reinforcement according to the present invention may be used as a geogrid used to prevent soft ground subsidence by placing a plurality of side by side and connecting the adjacent fiber reinforcement through the clip.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 블록형 옹벽 구조물의 섬유보강재를 도시한 도면이다. 도면을 참조하면, 본 발명에 따른 섬유보강재는 길이방향과 나란하게 복수의 마찰부(10)와 결속부(20)가 번갈아 배치되어 있다.1 is a view showing a fiber reinforcement of the block retaining wall structure according to the present invention. Referring to the drawings, the fiber reinforcing material according to the present invention are arranged alternately a plurality of friction portion 10 and the binding portion 20 side by side in the longitudinal direction.

마찰부(10)는 섬유보강재에 강성을 부여하기 위한 폴리에스테르계 섬유 심재(11)를 내장하고 있다. 심재(11)는 복수의 가닥으로 이루어지며, 각 가닥은 수천 가닥의 미세 섬유로 이루어져 있어서 섬유보강재에 작용하는 인장력에 효율적으로 저항한다. 심재(11)에는 폴리에틸렌계 합성수지로 이루어진 피복재(12)가 피복되어 있으며, 이 피복재(12)의 표면에는 요철(13)이 형성되어 흙과의 마찰력을 더욱 증가시킨다. The friction portion 10 incorporates a polyester fiber core 11 for imparting rigidity to the fiber reinforcement. Core material 11 is composed of a plurality of strands, each strand is composed of thousands of fine fibers to effectively resist the tensile force acting on the fiber reinforcement. The core member 11 is coated with a coating material 12 made of polyethylene-based synthetic resin, and irregularities 13 are formed on the surface of the coating material 12 to further increase the frictional force with the soil.

결속부(20)는 마찰부(10)의 피복재(12)와 같이 폴리에틸렌계 합성수지로 제조되며 섬유보강재를 둘러싸고 있는 상하측의 흙이 서로 접촉되도록 함으로써 흙 간의 결합력을 증대시킨다. 이를 위해, 결속부(20)는 섬유보강재의 길이방향을 따라 소정 간격으로 천공홀(21)을 구비한다. 천공홀(21)의 길이(H)는 천공홀간 이격거리(S)의 2배이며, 폭(W)은 천공홀간 이격거리(S)의 0.5배이다. 길이(H)가 너무 길거나 이격거리(S)가 너무 짧거나 폭(W)이 너무 넓으면 횡방향으로 작용하는 힘에 취약하여 결속부(20)가 찢어지는 경우가 발생한다. 천공홀(21)의 모서리는 응력을 분산시킬 수 있도록 라운딩처리된다. The binding unit 20 is made of a polyethylene-based synthetic resin, such as the coating member 12 of the friction portion 10 and increases the bonding force between the soil by making the upper and lower soils surrounding the fiber reinforcement contact each other. To this end, the binding unit 20 is provided with a drilling hole 21 at predetermined intervals along the longitudinal direction of the fiber reinforcement. The length H of the boring holes 21 is twice the spacing distance S between the boring holes, and the width W is 0.5 times the spacing distance S between the boring holes. If the length H is too long, the separation distance S is too short, or the width W is too wide, the binding part 20 may be torn due to being vulnerable to the force acting in the lateral direction. The corners of the drilling holes 21 are rounded to disperse the stress.

마찰부(10)와 결속부(20)는 단차를 가지되, 바람직하게는 결속부(20)가 마찰부(10)보다 낮은 높이를 가진다. 이것은 결속부(20)에 흙이 상대적으로 더 채워짐으로써 상대적으로 흙의 하중을 천공홀(21)에 더 집중시켜 접촉하는 흙 간의 결합력이 더욱 증대시킨다. The friction part 10 and the binding part 20 have a step, but preferably, the binding part 20 has a height lower than that of the friction part 10. This is because the soil is more relatively filled in the binding unit 20, the load of the soil is relatively more concentrated in the drilling hole 21 to further increase the bonding force between the soil in contact.

섬유보강재는 복수개가 적층되어 사용될 수도 있다. 이때는 겹쳐지는 천공홀(21,21')이 도 1에 점선으로 표시한 바와 같이 교호 상태가 되도록 배치하는 것이 바람직하다. 그리고, 섬유보강재는 나란히 배치되는 복수의 마찰부(10)와 결속부(20) 사이에 절취부(30)를 구비하여 필요한 인장강도에 따라 간편하게 분리해서 사용할 수 있도록 할 수 있다. Fiber reinforcement may be used in a plurality of laminated. At this time, it is preferable that the overlapping perforation holes 21 and 21 'are arranged so as to be in an alternating state as indicated by a dotted line in FIG. In addition, the fiber reinforcing material may be provided with a cutout portion 30 between the plurality of friction portions 10 and the binding portion 20 arranged side by side, so that the fiber reinforcement may be easily separated and used according to the required tensile strength.

도 2는 상술한 본 발명에 따른 섬유보강재를 제조하는 방법을 도시한 도면이다. 도면을 참조하면, 섬유보강재(1)는 이중사출부(100)와, 압착성형부(200)와, 냉각부(300)와 프레스부(400)와 인발부(500)와 권취부(600)를 통해 제조된다.Figure 2 is a view showing a method for manufacturing a fiber reinforcement according to the present invention described above. Referring to the drawings, the fiber reinforcing material (1) is a double injection unit 100, the compression molding unit 200, the cooling unit 300, the press unit 400, the drawing unit 500 and the winding unit 600 It is manufactured through.

이중사출부(100)는 마찰부(10)에 들어가는 섬유 원사에 합성수지 피복재(12)를 피복하기 위한 것으로서, 이중사출금형(110)으로 일측에서는 원사가 뭉쳐진 섬유 심재(11)가 들어가고 타측에서는 펠릿 형태의 합성수지를 녹인 용융수지가 사출기(120)로부터 공급된다. The double injection part 100 is for coating the synthetic resin coating material 12 on the fiber yarn entering the friction part 10, the double injection mold 110 enters the fiber core material 11, the yarn agglomerated on one side and pellets on the other side The molten resin in which the synthetic resin of the form is melted is supplied from the injection machine 120.

압착성형부(200)는 섬유 심재(11)를 내장한 피복재(12)의 외형을 성형하기 위한 것으로서, 압착롤러(210)를 사용한다. 압착롤러(210, 제1압착롤러)의 외주에는 본 발명의 섬유보강재를 형성할 수 있도록 마찰부(10)와 결속부(20) 형태가 가공되어 있다. 본 실시예에서는 압착롤러(210)의 후방에는 보조압착롤러(220, 제2압착롤러)를 더 구비한다. 보조압착롤러(220)는 결속부(20)를 얇게 가공하기 위한 것으로, 전방의 압착롤러(210)에서 결속부(20)를 얇게 가공하게 되면 섬유보강재의 형태가 찌그러지기 쉽기 때문에 2차에 걸쳐 가공한다.The compression molding part 200 is for molding the outer shape of the coating material 12 in which the fiber core 11 is incorporated, and uses the compression roller 210. In the outer circumference of the compression roller 210 (first compression roller), the friction portion 10 and the binding portion 20 are processed to form the fiber reinforcing material of the present invention. In the present embodiment, the rear of the pressing roller 210 is further provided with an auxiliary pressing roller 220, the second pressing roller. The auxiliary compression roller 220 is for processing the binding unit 20 thinly, and when the binding unit 20 is thinly processed in the front compression roller 210, the shape of the fiber reinforcing material is easily crushed over the second Processing.

냉각부(300)는 고열 상태로 성형되는 섬유보강재(1)의 열을 식히기 위한 것으로서, 연속적으로 공급되는 섬유보강재(1)를 효율적으로 냉각시킬 수 있도록 수냉식 탱크(310)에 침적시킨다. 탱크(310)의 물은 지속적으로 순환한다. 탱크(310)의 후단에는 섬유보강재(1)에 붙어 있는 물기를 제거할 수 있도록 에어브러쉬(320)가 횡방향으로 마련되어 있다.The cooling unit 300 is for cooling the heat of the fiber reinforcement 1 molded in a high temperature state, and is deposited in the water-cooled tank 310 to efficiently cool the fiber reinforcement 1 continuously supplied. The water in tank 310 continually circulates. At the rear end of the tank 310, the airbrush 320 is provided in the lateral direction so as to remove moisture adhering to the fiber reinforcement (1).

프레스부(400)는 마찰부(10)와 결속부(20)가 성형된 섬유보강재(1)의 결속부(20)에 천공홀(21)을 형성하기 위한 것으로서, 다양한 폭이 요구되는 섬유보강재(1)의 특성에 따라 구비된 금형(410)을 미리 설치하여 연속적으로 천공홀(21)을 펀칭할 수 있도록 한다. The press unit 400 is for forming the punched hole 21 in the binding portion 20 of the fiber reinforcing material 1 in which the friction portion 10 and the binding portion 20 are molded, and the fiber reinforcing material having various widths is required. The mold 410 provided according to the characteristic of (1) is installed in advance so that the punching hole 21 can be continuously punched.

인발부(500)는 가공 중인 섬유보강재(1)를 효과적으로 포장할 수 있도록 공정 중의 섬유보강재(1)를 권취기(600)로 당겨주는 역할을 한다. 인발부(500)로는 무한궤도로 회전하는 캐터필러가 바람직하다.The drawing part 500 serves to pull the fiber reinforcement 1 during the process to the winding machine 600 to effectively package the fiber reinforcement 1 being processed. As the drawing part 500, a caterpillar rotating in an infinite orbit is preferable.

한편, 도 4는 본 발명에 따른 섬유보강재를 연약 지반의 침하를 방지하기 위한 지오그리드로 활용한 일례를 예시한 도면이다. On the other hand, Figure 4 is a view illustrating an example of using the fiber reinforcement according to the invention as a geogrid for preventing the settlement of the soft ground.

도시된 바와 같이, 본 발명의 섬유보강재(1)를 복수 개 옆으로 배치한 후 상호 인접하는 결속부(20)의 천공홀(21,21')들을 결합부재로 연결하게 되면 직물 형태의 지오그리드가 형성된다. 섬유보강재(1)의 연결은 강도가 높으며 부식되지 않는 스텐레스 재질의 클립(40)을 이용하며, 클립(40)은 양단을 이웃하는 섬유보강재의 각 천공홀(21,21')에 걸은 후 압착하여 섬유보강재에 고정시키게 된다. 이와 같이 마련된 섬유보강재 지오그리드를 연약 지반에 넓게 시공하게 되면, 성토의 결합력이 지오그리드의 천공홀(21,21')들을 통해 증가되면서 지반의 침하를 효율적으로 방지하게 된다.As shown, when the plurality of fiber reinforcement (1) of the present invention is disposed sideways and then connecting the drilling holes (21, 21 ') of the adjacent coupling unit 20 with the coupling member geogrid of the fabric form Is formed. The connection of the fiber reinforcement (1) is made of stainless steel clips (40) of high strength and non-corrosion, and the clips (40) are crimped after hooking both ends at each of the perforated holes (21, 21 ') of the neighboring fiber reinforcement. It is fixed to the fiber reinforcement. When the fiber reinforcement geogrid prepared in this way is widely applied to the soft ground, the bond strength of the fill is increased through the boring holes (21, 21 ') of the geogrid to effectively prevent settlement of the ground.

도 1은 본 발명에 따른 섬유보강재를 도시한 평면도이다.1 is a plan view showing a fiber reinforcing material according to the present invention.

도 2는 본 발명에 따른 섬유보강재를 도시한 단면도이다.2 is a cross-sectional view showing a fiber reinforcing material according to the present invention.

도 3은 본 발명에 따른 섬유보강재를 제조하는 장치를 도시한 도면이다.3 is a view showing an apparatus for manufacturing a fiber reinforcing material according to the present invention.

도 4는 본 발명에 따른 섬유보강재를 활용한 지오그리드를 도시한 도면이다. Figure 4 is a view showing a geogrid utilizing a fiber reinforcement according to the present invention.

*도면의 주요 참조부호에 대한 간단한 설명** Brief description of the main references in the drawings *

1..섬유보강재 10..마찰부Fiber reinforcement 10. Friction

11..심재 12..피복재11. Heartwood 12. Cladding

20..결속부 21..천공홀20. Bonding 21. Drill hole

30..절취부 40..클립30..cut 40..clip

Claims (3)

옹벽 형성 과정 중 흙속에 매설되어 성토층의 안정성을 향상시키거나 연약 지반의 침하를 방지하는 섬유보강재에 있어서,In the fiber reinforcement to be embedded in the soil during the formation of the retaining wall to improve the stability of the fill layer or to prevent settlement of the soft ground, 섬유보강재에 강성을 부여하는 마찰부와 흙간의 결합력을 증대시키는 결속부가 길이방향과 나란하게 번갈아 배치되되, The binding part which increases the bonding force between the friction part and the soil which gives rigidity to the fiber reinforcement is alternately arranged side by side in the longitudinal direction, 상기 마찰부는 내부에 심재가 표면에 요철이 마련되고, 상기 결속부는 소정 간격으로 길이방향을 따라 천공홀을 구비하며,The friction part is provided with irregularities on the surface of the core material, the binding portion has a hole in the longitudinal direction at predetermined intervals, 상기 마찰부와 결속부 사이에는 길이방향으로 절취부가 마련되어 요구되는 인장강도에 따라 분리사용하며 , 복수개 사용 시에는 클립으로 상기 결속부의 천공홀을 연결하는 것을 특징으로 하는 섬유보강재.Fiber reinforcement, characterized in that the cut portion is provided in the longitudinal direction between the friction portion and the binding portion is used according to the required tensile strength, when using a plurality of clips to connect the punching hole of the binding portion. 제 1항에 있어서, The method of claim 1, 상기 마찰부와 결속부는 단차를 가지되,The friction portion and the binding portion has a step, 상기 결속부가 마찰부보다 낮은 높이를 갖는 것을 특징으로 하는 섬유보강재.Fiber reinforcing material, characterized in that the binding portion has a lower height than the friction portion. 제 1항 또는 제 2 항에 있어서, The method according to claim 1 or 2, 상기 섬유보강재는 복수개를적층 사용 시 결속부의 천공홀이 교호로 적층되도록 하는 것을 특징으로 하는 섬유보강재.The fiber reinforcing material is a fiber reinforcing material, characterized in that when the plurality of laminated holes are drilled alternately laminated.
KR1020090047586A 2009-05-29 2009-05-29 Extile Reinforcement KR100954783B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101530871B1 (en) * 2015-01-09 2015-06-23 이재경 Retaining Wall Having Natural Rock And Construction Method Thereof
KR20190011917A (en) * 2017-07-26 2019-02-08 주식회사 휴비스 Fiber reinforcing strip, manufacturing method thereof, and manufacturing apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080053033A (en) * 2006-12-08 2008-06-12 주식회사 장원기술단 Composite geogrid and preparation thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101530871B1 (en) * 2015-01-09 2015-06-23 이재경 Retaining Wall Having Natural Rock And Construction Method Thereof
KR20190011917A (en) * 2017-07-26 2019-02-08 주식회사 휴비스 Fiber reinforcing strip, manufacturing method thereof, and manufacturing apparatus

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