KR102358953B1 - nailing device and the method of installing nailing device - Google Patents

nailing device and the method of installing nailing device Download PDF

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Publication number
KR102358953B1
KR102358953B1 KR1020210065058A KR20210065058A KR102358953B1 KR 102358953 B1 KR102358953 B1 KR 102358953B1 KR 1020210065058 A KR1020210065058 A KR 1020210065058A KR 20210065058 A KR20210065058 A KR 20210065058A KR 102358953 B1 KR102358953 B1 KR 102358953B1
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South Korea
Prior art keywords
diameter
circumferential surface
stranded wire
fixing
anchor
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KR1020210065058A
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Korean (ko)
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이태민
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주식회사 구마에스앤씨(S＆C)
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1607—Shapes round, e.g. circle
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/165—Shapes polygonal
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals
    • E02D2300/0029—Steel; Iron
    • E02D2300/0034—Steel; Iron in wire form
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to a new structure of permanent anchor, which has a simple structure and can be easily installed, and a construction method thereof. and the permanent anchor comprises: a head member (10) in which a fixing unit (B) is engaged with a front-end unit of a PC strand (A); a wedge member (20) having its outer circumferential surface with a diameter extending toward the rear side, and having a center unit with a penetrating hole (21) through which the PC strand (A) passes, and engaged with an outer side of a front-end unit of the PC strand (A) to be slidable forward and backward; an extendable-diameter tank body (30) engaged with an outer side of the wedge and having a front-end unit engaged with the head member (10); and a tension wire (40) having a front-end unit connected to the wedge member (20), and having a rear-end unit extended toward an outer side of a punched hole. The extendable-diameter tank body (30) includes: a plurality of extendable-diameter members (31) having an insertion groove (31a) formed on an adjacent surface, into which the wedge member (20) is inserted, and a concave groove (31b) formed on the outer circumferential surface and being extended to the sides; and a ring-shaped fixing member (32) engaged with the concave groove (31b) for surrounding the circumferential surface of the extendable-diameter member (31), and fixing the extendable-diameter member (31) to be prevented from being apart. The extendable-diameter member (31) has a hanging bump (31c) engaged with the circumferential surface of the head member (10). Therefore, when the front-end unit of the PC strand (A) is inserted into the punched hole (1) and the tension wire (40) is pulled, the diameter of the extendable-diameter tank body (30) is extended and the extendable-diameter tank body (30) is fixed on the inner circumferential surface of the punched hole (1). Therefore, the structure is very simple, and the permanent anchor can be easily fixed on the punched hole (1).

Description

영구앵커 및 시공방법{nailing device and the method of installing nailing device}Permanent anchor and construction method {nailing device and the method of installing nailing device}

본 발명은 구조가 간단하면서 설치가 용이한 새로운 구조의 영구앵커 및 시공방법에 관한 것이다.The present invention relates to a permanent anchor and a construction method of a new structure having a simple structure and easy installation.

일반적으로, 건설공사에서 발생되는 토압, 풍압, 수압, 지진력 등의 외력으로부터 사면이나 옹벽, 굴착면 등을 보호하기 위해 사용되는 영구앵커는, 전단부가 사면에 형성된 천공구멍에 삽입되는 PC강연선과, 상기 PC강연선의 전단부에 구비되며 상기 천공구멍의 내부에 고정되는 고정유닛으로 구성된다.In general, a permanent anchor used to protect a slope, a retaining wall, an excavation surface, etc. from external forces such as earth pressure, wind pressure, water pressure, and seismic force generated in construction work, the front end of which is inserted into the perforated hole formed on the slope; It is provided at the front end of the PC stranded wire and consists of a fixing unit fixed to the inside of the drilling hole.

따라서, 상기 고정유닛이 천공구멍의 내부에 삽입되도록 PC강연선을 설치한 후, 상기 천공구멍의 내부로 시멘트페이스트를 주입하여 경화시키고, 상기 사면에 패널을 고정하거나 사면으로부터 이격된 옹벽을 시공한 후, 상기 PC강연선의 후단부를 사면 또는 사면으로부터 이격되도록 구비된 패널이나 옹벽에 고정함으로써, 시공을 할 수 있다.Therefore, after installing the PC steel wire so that the fixing unit is inserted into the drilling hole, cement paste is injected into the drilling hole to harden, and after fixing the panel to the slope or constructing a retaining wall spaced from the slope , By fixing the rear end of the PC stranded wire to a slope or a panel or retaining wall provided to be spaced apart from the slope, construction can be performed.

그런데, 이러한 영구앵커는 상기 고정유닛의 구조가 복잡하고, 고정유닛이 천공구멍의 내부에 고정되도록 하는 방법이 번거로운 문제점이 있었다.However, such a permanent anchor has a complicated structure of the fixing unit, and the method of fixing the fixing unit to the inside of the drilling hole is cumbersome.

따라서, 이러한 문제점을 해결할 수 있는 새로운 방법이 필요하게 되었다.Therefore, there is a need for a new method to solve these problems.

등록특허 10-1366818호,Registered Patent No. 10-1366818,

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 구조가 간단하면서 설치가 용이한 새로운 구조의 영구앵커 및 시공방법을 제공함에 그 목적이 있다.The present invention is to solve the above problems, and an object of the present invention is to provide a permanent anchor and a construction method of a new structure with a simple structure and easy installation.

상기한 목적을 달성하기 위한 본 발명은, 전단부가 사면에 형성된 천공구멍(1)에 삽입되는 PC강연선(A)과, 상기 PC강연선(A)의 전단부에 구비되며 상기 천공구멍(1)의 내부에 고정되는 고정유닛(B)을 포함하는 영구앵커에 있어서, 상기 고정유닛(B)은 상기 PC강연선(A)의 전단부에 결합되는 헤드부재(10)와, 외주면의 지름이 후방으로 갈수록 작아지도록 구성되며 중앙부에는 상기 PC강연선(A)이 통과하는 관통공(21)이 형성되어 상기 PC강연선(A)의 전단부 외측에 전후방향으로 슬라이드가능하게 결합되는 쐐기부재(20)와, 상기 쇄기부재(20)의 외측에 결합되며 전단부가 상기 헤드부재(10)에 결합된 확경통체(30)와, 전단부는 상기 쐐기부재(20)에 연결되고 후단부는 상기 천공구멍(1)의 외측으로 연장된 인장와이어(40)를 포함하고, 상기 확경통체(30)는 인접면에 상기 쐐기부재(20)가 삽입되는 삽입홈(31a)이 형성되고 외주면에는 측방향으로 연장된 오목홈(31b)이 형성된 복수개의 확경부재(31)와, 상기 확경부재(31)의 둘레면을 감싸도록 상기 오목홈(31b)에 결합되어 상기 확경부재(31)가 상호 이격되지 않도록 고정하는 링형상의 고정부재(32)를 포함하며, 상기 삽입홈(31a)은 상기 쐐기부재(20)의 외측 둘레면에 대응되도록, 후방으로 갈수록 내경이 작아지도록 구성되고, 상기 확경부재(31)에는 상기 헤드부재(10)의 지지판(11)의 전단부 둘레면에 걸려 상기 확경부재(31)가 후방으로 슬라이드되지 않도록 고정하는 걸림턱(31c)이 형성된 것을 특징으로 하는 영구앵커가 제공된다.The present invention for achieving the above object is provided at the front end of the PC stranded wire (A) and the PC stranded wire (A) that the front end is inserted into the perforated hole (1) formed on the slope, and the perforated hole (1) In the permanent anchor comprising a fixing unit (B) fixed therein, the fixing unit (B) is a head member 10 coupled to the front end of the PC stranded wire (A), and the diameter of the outer peripheral surface toward the rear A wedge member 20 that is configured to be small and is slidably coupled in the front and rear directions to the outside of the front end of the PC stranded wire (A) with a through hole 21 through which the PC stranded wire (A) passes is formed in the central portion, and the A widening cylinder 30 is coupled to the outside of the wedge member 20 and the front end is coupled to the head member 10, the front end is connected to the wedge member 20, and the rear end is the outside of the drilling hole (1) includes a tensile wire 40 extending to 31b) is coupled to the concave groove 31b to surround the circumferential surface of the plurality of diameter expansion members 31 and the diameter expansion member 31 to fix the diameter expansion member 31 so as not to be spaced apart from each other It includes a ring-shaped fixing member 32, the insertion groove (31a) is configured to correspond to the outer circumferential surface of the wedge member (20), the inner diameter becomes smaller toward the rear, the enlarged diameter member (31) There is provided a permanent anchor, characterized in that it is caught on the circumferential surface of the front end of the support plate 11 of the head member 10 and a locking jaw 31c for fixing the enlarged diameter member 31 not to slide backward is provided. .

본 발명의 다른 특징에 따르면, 상기 확경부재(31)의 인접면에 구비되어 확경부재(31)가 상호 외측으로 이격되도록 탄성적으로 가압하는 탄성부재(33)를 더 포함하는 것을 특징으로 하는 영구앵커가 제공된다.According to another feature of the present invention, it is provided on the adjacent surface of the diameter expansion member 31, characterized in that it further comprises an elastic member 33 for elastically pressing the diameter expansion member 31 to be spaced apart from each other outward. A permanent anchor is provided.

본 발명의 또 다른 특징에 따르면, 상기 확경부재(31)의 둘레면에는 오목부(31e)가 형성되고, 상기 확경부재(31)에는 확경부재(31)의 인접면에서 상기 오목부(31e)로 개방되도록 연장된 가이드공(31f)이 형성되며, 기단부에 구비된 회동축(51a)에 의해 상기 오목부(31e)의 내부에 선단부가 외측으로 회동가능하게 결합되며 기단부에는 상기 가이드공(21f)을 향하도록 걸림턱(51b)이 형성된 앵커바(51)와, 상기 앵커바(51)에 연결되어 앵커바(51)의 선단부가 외측으로 회동되도록 탄성적으로 가압하는 보조탄성부재(52)와, 상기 확경부재(31)의 인접면에서 연장되어 반대편에 위치된 확경부재(31)의 가이드공(31f)에 삽입되며 선단부는 상기 앵커바(51)의 걸림턱(51b)에 결합되어 앵커바(51)의 선단부가 상기 오목부(31e)의 내부에 위치되도록 앵커바(51)를 고정하는 고정바(53)를 더 포함하는 것을 특징으로 하는 영구앵커가 제공된다.According to another feature of the present invention, a concave portion 31e is formed on the circumferential surface of the enlarged diameter member 31 , and the concave portion 31e is formed in the enlarged diameter member 31 on the adjacent surface of the diameter enlarged member 31 . A guide hole 31f extending to be opened to 31e is formed, and the front end is rotatably coupled to the inside of the concave portion 31e by the rotation shaft 51a provided at the base end portion, and the guide hole 31f has the base end portion. An anchor bar 51 having a locking jaw 51b formed to face the ball 21f, and an auxiliary elastic member connected to the anchor bar 51 and elastically pressing the tip of the anchor bar 51 to rotate outward. (52) and extending from the adjacent surface of the enlarged diameter member 31 and is inserted into the guide hole 31f of the enlarged diameter member 31 positioned on the opposite side, and the distal end portion is the engaging projection 51b of the anchor bar 51 ) coupled to the anchor bar 51 is provided with a permanent anchor, characterized in that it further comprises a fixing bar (53) for fixing the anchor bar (51) so that the front end portion is located inside the recess (31e).

본 발명이 또 다른 특징에 따르면, 상기 고정유닛(B)이 결합된 PC강연선(A)의 선단부를 천공구멍(1)의 내부로 삽입하고 상기 인장와이어(40)의 후단부가 천공구멍(1)의 외측으로 연장되도록 배치하는 단계와, 상기 PC강연선(A)을 지지한 상태로 인장와이어(40)를 후방으로 당겨 상기 쐐기부재(20)를 후방으로 당김으로써 상기 확경부재(31)가 외측으로 벌어져 천공구멍(1)의 내주면에 밀착고정되도록 하는 단계와, 상기 천공구멍(1)의 내부에 시멘트페이스트를 주입하는 단계와, 상기 PC강연선(A)의 후단부를 패널 또는 옹벽에 고정하는 단계를 포함하는 것을 특징으로 하는 영구앵커 시공방법이 제공된다.According to another feature of the present invention, the front end of the PC stranded wire (A) to which the fixing unit (B) is coupled is inserted into the perforated hole (1), and the rear end of the tensile wire (40) is a perforated hole (1) The step of disposing so as to extend to the outside of, and pulling the tension wire 40 rearward while supporting the PC stranded wire (A) and pulling the wedge member 20 to the rear, the diameter expansion member 31 is the outside Steps to be fixed in close contact with the inner circumferential surface of the drilling hole (1), injecting cement paste into the hole (1), and fixing the rear end of the PC stranded wire (A) to a panel or a retaining wall There is provided a permanent anchor construction method comprising a.

본 발명에 따른 영구앵커는 상기 고정유닛(B)이 상기 PC강연선(A)의 전단부에 결합되는 헤드부재(10)와, 외주면의 지름이 후방으로 갈수록 커지도록 구성되며 중앙부에는 상기 PC강연선(A)이 통과하는 관통공(21)이 형성되어 상기 PC강연선(A)의 전단부 외측에 전후방향으로 슬라이드가능하게 결합되는 쐐기부재(20)와, 상기 쇄기의 외측에 결합되며 전단부가 상기 헤드부재(10)에 결합된 확경통체(30)와, 전단부는 상기 쐐기부재(20)에 연결되고 후단부는 상기 전공구멍의 외측으로 연장된 인장와이어(40)로 구성되고, 상기 확경통체(30)는 인접면에 상기 쐐기부재(20)가 삽입되는 삽입홈(31a)이 형성되고 외주면에는 측방향으로 연장된 오목홈(31b)이 형성된 복수개의 확경부재(31)와, 상기 확경부재(31)의 둘레면을 감싸도록 상기 오목홈(31b)에 결합되어 상기 확경부재(31)가 상호 이격되지 않도록 고정하는 링형상의 고정부재(32)로 구성되며, 상기 확경부재(31)에는 상기 헤드부재(10)의 둘레면에 결합되는 걸림턱(31c)이 형성됨으로, 상기 PC강연선(A)의 선단부를 천공구멍(1)에 삽입하고, 인장와이어(40)를 당기면 확경통체(30)가 확경되어 천공구멍(1)의 내주면에 고정됨으로, 구조가 매우 간단하고, 영구앵커를 천공구멍(1)에 용이하게 고정할 수 있는 장점이 있다.The permanent anchor according to the present invention is configured such that the fixing unit (B) is coupled to the front end of the PC stranded wire (A) and the diameter of the outer circumferential surface increases toward the rear, and the PC stranded wire ( A through hole 21 through which A) passes is formed, and the wedge member 20 is slidably coupled to the front end of the PC stranded wire (A) in the front-rear direction, and the wedge member 20 is coupled to the outside of the crusher and the front end is the head The expansion tube body 30 coupled to the member 10, the front end is connected to the wedge member 20, and the rear end is composed of a tensile wire 40 extending outwardly of the hole, the expansion tube body ( 30) is an insertion groove 31a into which the wedge member 20 is inserted is formed on an adjacent surface, and a plurality of diameter expansion members 31 having concave grooves 31b extending in the lateral direction on the outer circumferential surface, and the diameter expansion part It is coupled to the concave groove (31b) to surround the circumferential surface of the material (31) and consists of a ring-shaped fixing member (32) for fixing the enlarged diameter member (31) not to be spaced apart from each other, and the enlarged diameter member ( 31) is formed with a locking jaw 31c coupled to the circumferential surface of the head member 10, inserting the distal end of the PC stranded wire (A) into the punched hole (1), and pulling the tension wire 40 Since the barrel body 30 is enlarged and fixed to the inner circumferential surface of the perforated hole 1 , the structure is very simple, and the permanent anchor can be easily fixed to the perforated hole 1 .

도 1은 본 발명에 따른 영구앵커를 도시한 측단면도,
도 2는 본 발명에 따른 영구앵커의 요부를 도시한 측면도,
도 3은 본 발명에 따른 영구앵커의 요부를 도시한 측단면도,
도 4는 본 발명에 따른 영구앵커의 분해상태를 도시한 측단면도,
도 5는 도 3의 C-C선 단면을 도시한 정단면도,
도 6 내지 도 8은 본 발명에 따른 영구앵커의 시공방법을 도시한 측단면도,
도 9는 본 발명에 따른 영구앵커의 제2 실시예를 도시한 측단면도,
도 10은 본 발명에 따른 영구앵커의 제3 실시예를 도시한 정단면도,
도 11은 본 발명에 따른 영구앵커의 제3 실시예의 작용을 도시한 정단면도이다.1 is a side cross-sectional view showing a permanent anchor according to the present invention,
Figure 2 is a side view showing the main part of the permanent anchor according to the present invention,
Figure 3 is a side cross-sectional view showing the main part of the permanent anchor according to the present invention,
4 is a side cross-sectional view showing an exploded state of the permanent anchor according to the present invention;
5 is a front sectional view showing a cross-section taken along line CC of FIG. 3;
6 to 8 are side cross-sectional views showing the construction method of the permanent anchor according to the present invention,
Figure 9 is a side cross-sectional view showing a second embodiment of the permanent anchor according to the present invention,
10 is a front cross-sectional view showing a third embodiment of the permanent anchor according to the present invention,
11 is a front sectional view showing the operation of the third embodiment of the permanent anchor according to the present invention.

이하, 본 발명을 첨부된 예시도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail based on the accompanying illustrative drawings.

도 1 내지 도 8은 본 발명에 따른 영구앵커를 도시한 것으로, 전단부가 사면에 형성된 천공구멍(1)에 삽입되는 PC강연선(A)과 상기 PC강연선(A)의 전단부에 구비되며 상기 천공구멍(1)의 내부에 고정되는 고정유닛(B)으로 구성된 것은 종래와 동일하다.1 to 8 show a permanent anchor according to the present invention, the front end of which is provided at the front end of the PC stranded wire (A) and the PC stranded wire (A) inserted into the perforated hole (1) formed on the slope, and the perforation Consists of a fixing unit (B) fixed to the inside of the hole (1) is the same as in the prior art.

그리고, 본 발명에 따르면, 상기 고정유닛(B)은 상기 PC강연선(A)의 전단부에 결합되는 헤드부재(10)와, 외주면의 지름이 후방으로 갈수록 작아지도록 구성되며 중앙부에는 상기 PC강연선(A)이 통과하는 관통공(21)이 형성되어 상기 PC강연선(A)의 전단부 외측에 전후방향으로 슬라이드가능하게 결합되는 쐐기부재(20)와, 상기 쇄기부재(20)의 외측에 결합되며 전단부가 상기 헤드부재(10)에 결합된 확경통체(30)와, 전단부는 상기 쐐기부재(20)에 연결되고 후단부는 상기 천공구멍(1)의 외측으로 연장된 인장와이어(40)로 구성된다.And, according to the present invention, the fixing unit (B) is configured such that the head member 10 coupled to the front end of the PC stranded wire (A), and the diameter of the outer circumferential surface becomes smaller toward the rear, and the PC stranded wire ( A through hole 21 through which A) passes is formed, and a wedge member 20 that is slidably coupled in the front-rear direction to the outside of the front end of the PC stranded wire (A) and the wedge member 20 are coupled to the outside of the wedge member 20, The front end of the diameter expansion cylinder 30 coupled to the head member 10, the front end is connected to the wedge member 20, the rear end is composed of a tensile wire 40 extending outwardly of the drilling hole (1) do.

상기 헤드부재(10)는 상기 PC강연선(A)의 전단부가 관통하는 관통공(11a)이 형성된 원판형태의 지지판(11)과, 상기 관통공(11a)에 연결되도록 지지판(11)의 전면에 구비되며 상기 지지판(11)의 전방으로 연장된 PC강연선(A)의 전단부가 결합고정되는 고정구(12)와, 상기 고정구(12)의 외측을 덮도록 상기 지지판(11)의 전방에 결합고정되는 캡부재(13)로 구성된다.The head member 10 is a support plate 11 in the form of a disk having a through hole 11a through which the front end of the PC stranded wire (A) passes, and the support plate 11 so as to be connected to the through hole 11a. It is provided and fixed to the front of the support plate 11 so as to cover the outside of the fixture 12 and the front end of the PC stranded wire (A) extending in the front of the support plate 11 to cover the outside of the fixture 12 is fixed Consists of a cap member (13).

이때, 상기 관통공(11a)은 2개가 형성되고, 상기 PC강연선(A)의 전단부는 2개로 분할되어, 상기 관통공(11a)에 각각 삽입된다.At this time, two through-holes 11a are formed, and the front end of the PC stranded wire A is divided into two and inserted into the through-holes 11a, respectively.

상기 쐐기부재(20)는 전단부 외경이 상기 지지판(11)의 외경과 동일하게 구성된 구성된다.The wedge member 20 is configured such that the outer diameter of the front end is the same as the outer diameter of the support plate 11 .

상기 확경통체(30)는 인접면에 상기 쐐기부재(20)가 삽입되는 삽입홈(31a)이 형성되고 외주면에는 측방향으로 연장된 오목홈(31b)이 형성된 2개의 확경부재(31)와, 상기 확경부재(31)의 둘레면을 감싸도록 상기 오목홈(31b)에 결합되어 상기 확경부재(31)가 상호 이격되지 않도록 고정하는 링형상의 고정부재(32)로 구성된다.The diameter expansion cylinder 30 has an insertion groove 31a into which the wedge member 20 is inserted is formed on an adjacent surface, and a concave groove 31b extending in the lateral direction is formed on the outer peripheral surface of the two diameter expansion members 31. and a ring-shaped fixing member 32 coupled to the concave groove 31b so as to surround the circumferential surface of the diameter expanding member 31 and fixing the expanding member 31 not to be spaced apart from each other.

상기 확경부재(31)는 전방에서 볼 때 전후방향으로 연장된 원통을 상하방향으로 분할한 반원형태로 구성되어, 확경부재(31)가 상호 밀착되도록 하면, 도 5에 도시한 바와 같이, 확경부재(31)가 전후방향으로 연장된 원통형을 이루게 된다.The enlarged diameter member 31 is configured in a semicircular shape in which a cylinder extending in the front and rear direction is divided in the vertical direction when viewed from the front, and when the diameter expansion member 31 is in close contact with each other, as shown in FIG. 5 , The diameter expansion member 31 forms a cylindrical shape extending in the front-rear direction.

상기 삽입홈(31a)은 상기 쐐기부재(20)의 외측 둘레면에 대응되도록, 후방으로 갈수록 내경이 작아지도록 구성된다.The insertion groove (31a) is configured to correspond to the outer circumferential surface of the wedge member (20), so that the inner diameter becomes smaller toward the rear.

이때, 상기 확경부재(31)는 전단부가 상기 헤드부재(10)의 지지판(11)의 외측을 덮도록 전방으로 길게 연장되고, 상기 확경부재(31)의 내주면 전단부에는 상기 헤드부재(10)의 둘레면에 결합되는 걸림턱(31c)이 형성된다.At this time, the diameter expansion member 31 is extended forward so that the front end covers the outside of the support plate 11 of the head member 10, the inner circumferential front end of the diameter expansion member 31 is the head member ( 10) is formed with a locking protrusion 31c coupled to the circumferential surface.

상기 걸림턱(31c)은 상기 헤드부재(10)의 지지판(11)의 전단부 둘레면에 걸려, 상기 확경부재(31)가 후방으로 슬라이드되지 않도록 고정하도록 구성된다.The locking jaw 31c is hooked on the peripheral surface of the front end of the support plate 11 of the head member 10, and is configured to fix the diameter expansion member 31 so as not to slide backward.

상기 고정부재(32)는 강도가 낮은 합성수지재질로 구성되어, 후술하는 바와 같이, 상기 쐐기부재(20)를 이용하여 확경부재(31)가 상호 이격되도록 할 때, 고정부재(32)가 손상되면서 확경부재(31)가 상하방향으로 이격될 수 있도록 한다.The fixing member 32 is made of a synthetic resin material with low strength, and as will be described later, when the diameter expansion member 31 is spaced apart from each other by using the wedge member 20, the fixing member 32 is damaged. As the diameter expansion member 31 can be spaced apart in the vertical direction.

상기 인장와이어(40)는 강도가 높은 금속재 또는 합성수지재질의 와이어를 이용한다.The tensile wire 40 uses a high-strength metal or synthetic resin wire.

이와 같이 구성된 영구앵커를 시공하는 방법을 설명하면 다음과 같다. A method of constructing a permanent anchor constructed in this way will be described as follows.

우선, 도 6에 도시한 바와 같이, 상기 고정유닛(B)이 결합된 PC강연선(A)의 선단부를 천공구멍(1)의 내부로 삽입한다.First, as shown in FIG. 6, the front end of the PC stranded wire (A) to which the fixing unit (B) is coupled is inserted into the drilling hole (1).

이때, 상기 인장와이어(40)는 후단부가 천공구멍(1)의 외측으로 연장되도록 배치한다.At this time, the tension wire 40 is disposed so that the rear end extends to the outside of the perforation hole (1).

그리고, 작업자는 도 7에 도시한 바와 같이, 상기 PC강연선(A)이 움직이지 않도록 지지한 상태로 인장와이어(40)를 후방으로 당겨 상기 쐐기부재(20)를 후방으로 당겨지도록 한다.And, as shown in FIG. 7, the operator pulls the tension wire 40 rearward in a state in which the PC stranded wire A is supported so as not to move, and the wedge member 20 is pulled rearward.

이때, 상기 확경부재(31)는 걸림턱(31c)에 의해 헤드부재(10)의 지지판(11)의 둘레면에 결합됨으로, 상기 쐐기부재(20)를 후방으로 당기면, 쐐기부재(20)의 외측 둘레면과 확경부재(31)의 삽입홈(31a) 사이의 작용에 의해 확경부재(31)가 외측으로 밀려나가게 된다.At this time, since the diameter expansion member 31 is coupled to the circumferential surface of the support plate 11 of the head member 10 by the locking jaw 31c, when the wedge member 20 is pulled backward, the wedge member 20 The enlarged diameter member 31 is pushed out by the action between the outer circumferential surface of the diameter expansion member 31 and the insertion groove 31a of the diameter expansion member 31 .

따라서, 충분히 강한 힘으로 인장와이어(40)를 후방으로 당기면, 상기 고정부재(32)가 손상되면서 확경부재(31)가 외측으로 벌어져, 확경부재(31)의 외측둘레면이 천공구명의 내주면에 밀착된다.Therefore, when the tension wire 40 is pulled rearward with a sufficiently strong force, the fixing member 32 is damaged and the diameter expansion member 31 is opened to the outside, and the outer peripheral surface of the diameter expansion member 31 is a hole in the hole. adhered to the inner surface.

그리고, 도 8에 도시한 바와 같이, 상기 천공구멍(1)의 내부에 시멘트페이스트를 주입 및 경화시킴으로써, 영구앵커를 천공구멍(1)에 고정할 수 있다.And, as shown in FIG. 8 , by injecting and curing cement paste into the drilling hole 1 , the permanent anchor can be fixed to the drilling hole 1 .

그리고, 상기 사면이나 사면으로부터 이격된 위치에 패널 또는 옹벽을 설치하고, 상기 PC강연선(A)의 후단부를 상기 패널이나 옹벽에 고정함으로써, 영구앵커의 시공을 완료할 수 있다.And, by installing a panel or retaining wall at a position spaced apart from the slope or slope, and fixing the rear end of the PC stranded wire (A) to the panel or retaining wall, the construction of the permanent anchor can be completed.

이와 같이 구성된 영구앵커는 상기 고정유닛(B)이 상기 PC강연선(A)의 전단부에 결합되는 헤드부재(10)와, 외주면의 지름이 후방으로 갈수록 커지도록 구성되며 중앙부에는 상기 PC강연선(A)이 통과하는 관통공(21)이 형성되어 상기 PC강연선(A)의 전단부 외측에 전후방향으로 슬라이드가능하게 결합되는 쐐기부재(20)와, 상기 쇄기의 외측에 결합되며 전단부가 상기 헤드부재(10)에 결합된 확경통체(30)와, 전단부는 상기 쐐기부재(20)에 연결되고 후단부는 상기 전공구멍의 외측으로 연장된 인장와이어(40)로 구성되고, 상기 확경통체(30)는 인접면에 상기 쐐기부재(20)가 삽입되는 삽입홈(31a)이 형성되고 외주면에는 측방향으로 연장된 오목홈(31b)이 형성된 복수개의 확경부재(31)와, 상기 확경부재(31)의 둘레면을 감싸도록 상기 오목홈(31b)에 결합되어 상기 확경부재(31)가 상호 이격되지 않도록 고정하는 링형상의 고정부재(32)로 구성되며, 상기 확경부재(31)에는 상기 헤드부재(10)의 둘레면에 결합되는 걸림턱(31c)이 형성됨으로, 상기 PC강연선(A)의 선단부를 천공구멍(1)에 삽입하고, 인장와이어(40)를 당기면 확경통체(30)가 확경되어 천공구멍(1)의 내주면에 고정됨으로, 구조가 매우 간단하고, 영구앵커를 천공구멍(1)에 용이하게 고정할 수 있는 장점이 있다.The permanent anchor configured as described above is configured such that the fixing unit (B) is coupled to the front end of the PC stranded wire (A) and the diameter of the outer circumferential surface increases toward the rear, and the PC stranded wire (A) has a central portion ) through a through hole 21 is formed, and the wedge member 20 is slidably coupled in the front and rear directions to the outside of the front end of the PC stranded wire (A), and the wedge member 20 is coupled to the outside of the wedge and the front end is the head member (10) coupled to the expansion tube body 30, the front end is connected to the wedge member 20, the rear end is composed of a tensile wire 40 extending outwardly of the hole, the expansion tube body (30) ) is an insertion groove 31a into which the wedge member 20 is inserted is formed on the adjacent surface, and a plurality of diameter expansion members 31 having concave grooves 31b extending in the lateral direction on the outer circumferential surface, and the diameter expansion member It is coupled to the concave groove (31b) so as to surround the circumferential surface of (31) and consists of a ring-shaped fixing member (32) for fixing the enlarged diameter member (31) so as not to be spaced apart from each other, and the enlarged diameter member (31) ) is formed with a locking jaw 31c coupled to the circumferential surface of the head member 10, inserting the distal end of the PC stranded wire (A) into the perforated hole (1), and pulling the tension wire 40 Since the sieve 30 is enlarged and fixed to the inner circumferential surface of the perforated hole 1 , the structure is very simple, and there is an advantage that the permanent anchor can be easily fixed to the perforated hole 1 .

본 실시예의 경우, 상기 고정부재(32)는 강도가 낮은 합성수지재질로 구성된 것을 예시하였으나, 상기 고정부재(32)의 재질은 다양한 것으로 변경될 수 있다.In the present embodiment, the fixing member 32 is made of a low-strength synthetic resin material, but the material of the fixing member 32 may be changed to various ones.

특히, 상기 고정부재(32)를 물에 젖으면 손상되는 종이재질로 구성할 경우, 상기 고정유닛(B)과 PC강연선(A)을 천공구멍(1)에 삽입한 후, 천공구멍(1)의 내부에 물이나 콘크리트페이스트를 주입하면, 고정부재(32)가 물에 젖어 손상됨으로써, 확경부재(31)가 탄성부재(33)의 탄성에 의해 자동으로 벌어지도록 할 수 있다.In particular, when the fixing member 32 is made of a paper material that is damaged when wet with water, after inserting the fixing unit (B) and the PC stranded wire (A) into the drilling hole (1), the drilling hole (1) When water or concrete paste is injected into the inside, the fixing member 32 is wet and damaged, so that the diameter expansion member 31 can be opened automatically by the elasticity of the elastic member 33 .

도 9는 본 발명에 따른 제2 실시예를 도시한 것으로, 상기 확경부재(31)의 인접면에는 확경부재(31)가 상호 외측으로 이격되도록 탄성적으로 가압하는 탄성부재(33)가 구비된다.9 shows a second embodiment according to the present invention, on the adjacent surface of the diameter expansion member 31, there is an elastic member 33 that elastically presses the diameter expansion member 31 to be spaced apart from each other outward. provided

상기 탄성부재(33)는 양단이 상기 확경부재(31)에 형성된 고정공(31d)에 삽입고정되어, 상기 확경부재(31)를 외측으로 가압하는 압축코일스프링을 이용하는 것으로, 상기 쐐기부재(20) 의해 확경부재(31)가 외측으로 벌어질 때, 탄성부재(33)가 확경부재(31)를 외측으로 가압함으로써, 확경부재(31)가 천공구멍(1)의 내주면에 더욱 견고하게 밀착고정되도록 할 수 있는 장점이 있다.The elastic member 33 is inserted and fixed at both ends into the fixing holes 31d formed in the enlarged diameter member 31, and uses a compression coil spring that presses the enlarged diameter member 31 to the outside, the wedge member (20) When the diameter expansion member 31 is opened to the outside, by the elastic member 33 presses the diameter expansion member 31 to the outside, the diameter expansion member 31 is on the inner peripheral surface of the perforation hole (1) There is an advantage in that it can be made to be more firmly attached and fixed.

도 10은 및 도 11은 본 발명에 따른 제3 실시예를 도시한 것으로, 상기 확경부재(31)의 둘레면에는 오목부(31e)가 형성되고, 상기 확경부재(31)에는 확경부재(31)의 인접면에서 상기 오목부(31e)로 개방되도록 연장된 가이드공(31f)이 형성된다.10 and 11 show a third embodiment according to the present invention, a concave portion 31e is formed on the circumferential surface of the enlarged diameter member 31 , and an enlarged diameter portion is formed on the enlarged diameter member 31 . A guide hole 31f extending from the adjacent surface of the ash 31 to the concave portion 31e is formed.

그리고, 기단부에 구비된 회동축(51a)에 의해 상기 오목부(31e)의 내부에 선단부가 외측으로 회동가능하게 결합되며 기단부에는 걸림턱(51b)이 형성된 앵커바(51)와, 상기 앵커바(51)에 연결되어 앵커바(51)의 선단부가 외측으로 회동되도록 탄성적으로 가압하는 보조탄성부재(52)와, 상기 확경부재(31)의 인접면에서 연장되어 반대편에 위치된 확경부재(31)의 가이드공(31f)에 삽입되며 선단부는 상기 앵커바(51)의 걸림턱(51b)에 결합되어 앵커바(51)의 선단부가 상기 오목부(31e)의 내부에 위치되도록 앵커바(51)를 고정하는 고정바(53)가 더 구비된다.And, an anchor bar 51 having a proximal end rotatably coupled to the inside of the concave portion 31e by a rotation shaft 51a provided at the proximal end and having a locking protrusion 51b at the proximal end thereof, and the anchor bar An auxiliary elastic member 52 connected to 51 and elastically pressing the tip end of the anchor bar 51 to rotate outward, and an enlarged diameter extending from the adjacent surface of the diameter expanding member 31 and positioned on the opposite side It is inserted into the guide hole 31f of the ash 31 and the tip is coupled to the locking projection 51b of the anchor bar 51 so that the tip of the anchor bar 51 is positioned inside the recess 31e. A fixing bar 53 for fixing the bar 51 is further provided.

상기 앵커바(51)는 기단부가 상기 가이드공(31f)의 상하단에 각각 위치되도록 설치되며, 상기 걸림턱(51b)은 앵커바(51)의 선단부가 오목부(31e)의 내부로 삽입된 상태에서 상기 가이드공(31f)을 향하도록 위치설정된다.The anchor bar 51 is installed so that the proximal end is positioned at the upper and lower ends of the guide hole 31f, respectively, and in the locking step 51b, the front end of the anchor bar 51 is inserted into the concave portion 31e. It is positioned to face the guide hole (31f) in the.

상기 보조탄성부재(52)는 상기 회동축(51a)의 둘레부에 결합되며 양단이 상기 앵커바(51)와 오목부(31e)의 바닥면에 각각 고정되어 회동축(51a)의 선단부가 오목부(31e)의 외측으로 회동되도록 탄성적으로 가압하는 토션스프링을 이용한다.The auxiliary elastic member 52 is coupled to the periphery of the rotation shaft 51a and both ends are fixed to the bottom surfaces of the anchor bar 51 and the concave portion 31e, respectively, so that the front end of the rotation shaft 51a is concave. A torsion spring that elastically presses the portion 31e to rotate outwardly is used.

따라서, 도 10에 도시한 바와 같이, 상기 고정부재(32)에 의해 확경부재(31)가 상호 인접방향으로 근접되도록 고정된 상태에서는, 상기 고정바(53)가 상기 앵커바(51)의 걸림턱(51b)에 걸려, 앵커바(51)가 상기 오목부(31e)의 내부로 삽입되도록 회동되도록 고정된다.Therefore, as shown in FIG. 10 , in a state in which the diameter expansion member 31 is fixed so as to be adjacent to each other by the fixing member 32 , the fixing bar 53 is the anchor bar 51 . It is caught on the locking protrusion 51b, and the anchor bar 51 is fixed to be rotated so as to be inserted into the concave portion 31e.

그리고, 상기 영구앵커가 천공구멍(1)에 삽입된 상태에서, 도 11에 도시한 바와 같이, 상기 확경통체(30)가 외측으로 확경되면, 상기 고정바(53)가 확경부재(31)와 함께 슬라이드되어 상기 고정바(53)와 걸림턱(51b)의 고정이 해제되며, 이에 따라, 상기 보조탄성부재(52)에 의해 상기 앵커바(51)의 선단부가 확경부재(31)의 외측으로 돌출되도록 회동되면서, 앵커바(51)의 선단부가 상기 천공구멍(1)의 내주면에 박히게 된다.And, in the state in which the permanent anchor is inserted into the drilling hole 1, as shown in FIG. 11, when the diameter expansion cylinder 30 is expanded to the outside, the fixing bar 53 is the diameter expansion member 31 ) and the fixing bar 53 and the locking jaw 51b are released, and accordingly, the front end of the anchor bar 51 by the auxiliary elastic member 52 is enlarged diameter member 31 While rotating so as to protrude to the outside of, the tip of the anchor bar 51 is embedded in the inner circumferential surface of the perforation hole (1).

따라서, 단순히 상기 확경부재(31)의 외주면이 천공구멍(1)의 내주면에 밀착되어 확경통체(30)가 움직이지 않도록 고정하는 전술한 제1 실시예와 달리, 앵커바(51)의 선단부가 천공구멍(1)의 내주면에 박혀, 확경통체(30)가 더욱 효과적으로 움직이지 않도록 고정할 수 있는 장점이 있다.Therefore, unlike the first embodiment in which the outer circumferential surface of the diameter-expanding member 31 is in close contact with the inner circumferential surface of the drilling hole 1 and the diameter-expanding cylinder 30 does not move, the anchor bar 51 is The tip portion is embedded in the inner circumferential surface of the perforation hole (1), there is an advantage that can be fixed so that the expansion tube body 30 does not move more effectively.

A. PC강연선 B. 고정유닛
10. 헤드부재 20. 쐐기부재
30. 확경통체 40. 인장와이어A. PC stranded wire B. Fixed unit
10. Head member 20. Wedge member
30. Expansion tube 40. Tensile wire

Claims (4)

전단부가 사면에 형성된 천공구멍(1)에 삽입되는 PC강연선(A)과,
상기 PC강연선(A)의 전단부에 구비되며 상기 천공구멍(1)의 내부에 고정되는 고정유닛(B)을 포함하는 영구앵커에 있어서,
상기 고정유닛(B)은 상기 PC강연선(A)의 전단부에 결합되는 헤드부재(10)와,
외주면의 지름이 후방으로 갈수록 작아지도록 구성되며 중앙부에는 상기 PC강연선(A)이 통과하는 관통공(21)이 형성되어 상기 PC강연선(A)의 전단부 외측에 전후방향으로 슬라이드가능하게 결합되는 쐐기부재(20)와,
상기 쇄기부재(20)의 외측에 결합되며 전단부가 상기 헤드부재(10)에 결합된 확경통체(30)와,
전단부는 상기 쐐기부재(20)에 연결되고 후단부는 상기 천공구멍(1)의 외측으로 연장된 인장와이어(40)를 포함하고,
상기 확경통체(30)는
인접면에 상기 쐐기부재(20)가 삽입되는 삽입홈(31a)이 형성되고 외주면에는 측방향으로 연장된 오목홈(31b)이 형성된 복수개의 확경부재(31)와,
상기 확경부재(31)의 둘레면을 감싸도록 상기 오목홈(31b)에 결합되어 상기 확경부재(31)가 상호 이격되지 않도록 고정하는 링형상의 고정부재(32)를 포함하며,
상기 삽입홈(31a)은 상기 쐐기부재(20)의 외측 둘레면에 대응되도록, 후방으로 갈수록 내경이 작아지도록 구성되고,
상기 확경부재(31)에는 상기 헤드부재(10)의 지지판(11)의 전단부 둘레면에 걸려 상기 확경부재(31)가 후방으로 슬라이드되지 않도록 고정하는 걸림턱(31c)이 형성된 것을 특징으로 하는 영구앵커.
A PC stranded wire (A) inserted into the perforated hole (1) formed on the slope at the front end,
In the permanent anchor comprising a fixing unit (B) provided at the front end of the PC stranded wire (A) and fixed to the inside of the perforation hole (1),
The fixing unit (B) includes a head member 10 coupled to the front end of the PC stranded wire (A),
A wedge that is configured so that the diameter of the outer peripheral surface becomes smaller toward the rear and is slidably coupled to the front end of the PC stranded wire (A) in the front-rear direction outside the front end of the PC stranded wire (A) by forming a through hole (21) through the central portion through which the PC stranded wire (A) passes member 20, and
An expansion-gyeong cylinder 30 coupled to the outside of the shredding member 20 and having a front end coupled to the head member 10;
The front end is connected to the wedge member 20 and the rear end includes a tensile wire 40 extending outwardly of the drilling hole 1,
The expansion tube 30 is
A plurality of diameter expansion members 31 having an insertion groove 31a into which the wedge member 20 is inserted is formed on an adjacent surface and a concave groove 31b extending in the lateral direction is formed on the outer circumferential surface;
It is coupled to the concave groove (31b) so as to surround the circumferential surface of the enlarged diameter member (31) and includes a ring-shaped fixing member (32) for fixing the enlarged diameter member (31) not to be spaced apart from each other,
The insertion groove (31a) is configured to correspond to the outer circumferential surface of the wedge member (20), the inner diameter becomes smaller toward the rear,
The enlarged diameter member 31 has a locking jaw 31c that is caught on the circumferential surface of the front end of the support plate 11 of the head member 10 so that the enlarged diameter member 31 does not slide rearwardly is formed. permanent anchor with
 제 1항에 있어서,
상기 확경부재(31)의 인접면에 구비되어 확경부재(31)가 상호 외측으로 이격되도록 탄성적으로 가압하는 탄성부재(33)를 더 포함하는 것을 특징으로 하는 영구앵커.
The method of claim 1,
Permanent anchor, characterized in that it further comprises an elastic member (33) provided on the adjacent surface of the diameter expansion member (31) to elastically press the diameter expansion member (31) to be spaced apart from each other.
 제 1항에 있어서,
상기 확경부재(31)의 둘레면에는 오목부(31e)가 형성되고,
상기 확경부재(31)에는 확경부재(31)의 인접면에서 상기 오목부(31e)로 개방되도록 연장된 가이드공(31f)이 형성되며,
기단부에 구비된 회동축(51a)에 의해 상기 오목부(31e)의 내부에 선단부가 외측으로 회동가능하게 결합되며 기단부에는 상기 가이드공(21f)을 향하도록 걸림턱(51b)이 형성된 앵커바(51)와,
상기 앵커바(51)에 연결되어 앵커바(51)의 선단부가 외측으로 회동되도록 탄성적으로 가압하는 보조탄성부재(52)와,
상기 확경부재(31)의 인접면에서 연장되어 반대편에 위치된 확경부재(31)의 가이드공(31f)에 삽입되며 선단부는 상기 앵커바(51)의 걸림턱(51b)에 결합되어 앵커바(51)의 선단부가 상기 오목부(31e)의 내부에 위치되도록 앵커바(51)를 고정하는 고정바(53)를 더 포함하는 것을 특징으로 하는 영구앵커.
The method of claim 1,
A concave portion 31e is formed on the circumferential surface of the enlarged diameter member 31,
A guide hole 31f extending from the adjacent surface of the diameter expansion member 31 to the concave portion 31e is formed in the diameter expansion member 31,
Anchor bar ( 51) and
An auxiliary elastic member 52 connected to the anchor bar 51 and elastically pressing the tip end of the anchor bar 51 to rotate outward;
It extends from the adjacent surface of the enlarged diameter member 31 and is inserted into the guide hole 31f of the enlarged diameter member 31 located on the opposite side, and the tip is coupled to the locking jaw 51b of the anchor bar 51 to anchor the anchor. Permanent anchor, characterized in that it further comprises a fixing bar (53) for fixing the anchor bar (51) so that the front end of the bar (51) is located inside the recess (31e).
 제 1항 내지 제 3항 중 어느 한 항의 영구앵커를 시공하는 방법으로,
상기 고정유닛(B)이 결합된 PC강연선(A)의 선단부를 천공구멍(1)의 내부로 삽입하고 상기 인장와이어(40)의 후단부가 천공구멍(1)의 외측으로 연장되도록 배치하는 단계와,
상기 PC강연선(A)을 지지한 상태로 인장와이어(40)를 후방으로 당겨 상기 쐐기부재(20)를 후방으로 당김으로써 상기 확경부재(31)가 외측으로 벌어져 천공구멍(1)의 내주면에 밀착고정되도록 하는 단계와,
상기 천공구멍(1)의 내부에 시멘트페이스트를 주입하는 단계와, 상기 PC강연선(A)의 후단부를 패널 또는 옹벽에 고정하는 단계를 포함하는 것을 특징으로 하는 영구앵커 시공방법.As a method of constructing the permanent anchor of any one of claims 1 to 3,
Inserting the front end of the PC stranded wire (A) to which the fixing unit (B) is coupled into the perforation hole (1) and disposing the rear end of the tension wire (40) to extend to the outside of the perforation hole (1); ,
By pulling the tension wire 40 rearward in a state of supporting the PC stranded wire (A) and pulling the wedge member 20 rearward, the diameter expansion member 31 is spread outward and on the inner circumferential surface of the perforation hole 1 A step to be tightly fixed, and
A permanent anchor construction method comprising the steps of injecting cement paste into the drilling hole (1) and fixing the rear end of the PC stranded wire (A) to a panel or a retaining wall.
KR1020210065058A 2021-05-20 2021-05-20 nailing device and the method of installing nailing device KR102358953B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100858736B1 (en) * 2008-04-24 2008-09-17 주식회사 진우엔지니어링 Wedge type's earth pressure anchor that a packer is unnecessary and construction method thereof
KR101366818B1 (en) 2013-04-25 2014-02-26 주식회사 서하 Assembly permanent anchor and fixing method thereof
KR101985956B1 (en) * 2018-12-19 2019-06-05 주식회사 성지엔지니어링 Ground pressure type anchor with wedge having maximum expansion property for cross slope

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100858736B1 (en) * 2008-04-24 2008-09-17 주식회사 진우엔지니어링 Wedge type's earth pressure anchor that a packer is unnecessary and construction method thereof
KR101366818B1 (en) 2013-04-25 2014-02-26 주식회사 서하 Assembly permanent anchor and fixing method thereof
KR101985956B1 (en) * 2018-12-19 2019-06-05 주식회사 성지엔지니어링 Ground pressure type anchor with wedge having maximum expansion property for cross slope

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