KR20050033595A - Internal fixture of tension wire removal type ground anchorage - Google Patents

Internal fixture of tension wire removal type ground anchorage Download PDF

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Publication number
KR20050033595A
KR20050033595A KR1020050022856A KR20050022856A KR20050033595A KR 20050033595 A KR20050033595 A KR 20050033595A KR 1020050022856 A KR1020050022856 A KR 1020050022856A KR 20050022856 A KR20050022856 A KR 20050022856A KR 20050033595 A KR20050033595 A KR 20050033595A
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KR
South Korea
Prior art keywords
wedge
hole
main body
tension member
fastening
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KR1020050022856A
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Korean (ko)
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KR100586078B1 (en
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하영이
하승우
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하영이
하승우
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Priority to KR1020050022856A priority Critical patent/KR100586078B1/en
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Publication of KR100586078B1 publication Critical patent/KR100586078B1/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/80Ground anchors
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00Geometrical or physical properties
    • E02D2200/16Shapes
    • E02D2200/1685Shapes cylindrical
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00Geometrical or physical properties
    • E02D2200/16Shapes
    • E02D2200/1692Shapes conical or convex
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron
    • E02D2300/0034Steel; Iron in wire form

Abstract

An internal anchorage for a strand removal type ground anchor is provided to remove a strand easily and simply when unfastening a ground anchor, and to prevent the malfunction for fixing and unfixing against a strand by impact or load added when carrying a completed anchor handling for a construction work. The internal anchorage for a strand removal type ground anchor comprises: a main body(5) provided with a cap fastening screw unit(2), a wedge fitting hole(3) and a wedge backing fastening hole(4); a wedge assembly(10) inserted to the wedge fitting hole(3) of the main body(5) together with a vinyl tape(10a), assembled with three split wedges(6), and provided with a retreated groove(8) fixed with a wedge fastening ring(7), an inclined end(6a) and a screw hole(9); a wedge backing(13) inserted to the wedge backing fastening hole(4) of the main body(5) and provided with an inserting inclined end(13a) inserted with the inclined end(6a) of the wedge assembly(10), a fastening screw unit(11) screwed to the wedge backing fastening hole(4) of the main body(5) and a hexagonal hole(12); and a protective cap(15) screwed on a cap fastening screw unit(2) of the main body(5) by a closed ring(14).

Description

인장재 제거식 그라운드 앵커용 내부정착체{Internal fixture of tension wire removal type ground anchorage}Internal fixture of tension wire removal type ground anchorage

본 발명은 인장재 제거식 그라운드 앵커용 내부정착체에 관한 것으로, 보다 상세하게는 인장재의 제거시 외부정착을 해제한 상태의 인장재를 일측방향으로 회전시킴에 따라 인장재의 회전에 의해 나사식으로 이동하는 웨지받침구가 인장재를 고정하고 있는 웨지조립체를 원주방향으로 벌어지게 하면서 웨지삽입공으로부터 밀어내어 인장재에 대한 웨지물림상태를 해제시킬 수 있도록 구성되므로써, 그라운드 앵커의 해체시 보다 용이하고 간편하게 인장재를 제거할 수 있게 될 뿐 아니라 완성된 앵커의 운송과정이나 시공작업을 위한 취급시 가해지는 충격이나 하중에 의해 인장재에 대한 고정 및 해제기능이 손상되는 것을 완전히 방지할 수 있게 되는 인장재 제거식 그라운드 앵커용 내부정착체에 관한 것이다.The present invention relates to an inner fixing body for a tension member-removable ground anchor, and more particularly, by moving the tension member in a state in which the external fixing is released when the tension member is removed in one direction by screwing by the rotation of the tension member. The wedge supporter is configured to push the wedge assembly holding the tension member in the circumferential direction and push it away from the wedge insertion hole, thereby releasing the wedge bite to the tension member. Internal to tension removing type ground anchors that can be prevented from being completely damaged by the impact or load applied during transportation or construction work of the finished anchor. It relates to a fixture.

일반적으로 그라운드 앵커란 도 1에 도시되어 있는 바와 같이 지반(44)에 앵커공(40)을 천공형성하고 그 앵커공(40)에 인장강도가 우수한 인장재(강연선)(41)를 내부정착체(31) 및 내하체(32)와 함께 삽입한 후 콘크리트 등의 그라우팅재(42)를 주입하여 견고하게 고정시킨 다음 인장재(41)의 자유단에 하중을 걸고 외부정착체(33)로 고정시켜 강력한 정착력을 확보하므로써 토류벽(43)과 같은 구조물 등을 안전하게 지지할 수 있도록 한 것으로서, 건축 및 토목공사의 지하구조물용 굴착공사시 주변지반의 붕괴를 방지하기 위한 흙막이 공사나 연약지반 절개면의 토사 유실을 억제하기 위한 공사 등에 널리 사용된다.In general, a ground anchor is formed in the ground 44 to form an anchor hole 40 in the ground 44 and the anchor hole 40 in the tension member (strand wire) 41 excellent in tensile strength of the internal fixing body ( 31) and then inserted together with the inner body 32, the grouting material 42, such as concrete, is injected and securely fixed, and then the load is applied to the free end of the tension member 41 and fixed with an external fixing body 33 It is designed to secure structures such as the earth wall 43 by securing the anchoring force, and it is used for earthquake construction or soft ground incision surface to prevent the collapse of the surrounding ground during excavation work for underground structures in construction and civil engineering works. Widely used in construction to suppress loss.

이러한 그라운드 앵커(30)에 사용되는 인장재(41)는 여러 가닥의 강선을 꼬아 만든 강연선을 사용하게 되는데, 이 강연선으로 된 인장재(41)는 일반 철근보다 그 강도가 월등하여 지중에 그대로 방치될 경우 지중 장애물화 되어 인접지의 추후 개발시 지하보상권 등의 문제를 발생시킬 우려가 있으므로, 이러한 문제의 해결을 위해 공사완료 후 지중에 매설한 인장재(41)를 용이하게 제거할 수 있도록 하는 인장재 제거식 그라운드 앵커용 내부정착체가 특허 제411567호로 등록되어 공지된 바 있다. The tension member 41 used in the ground anchors 30 uses a strand made of twisted steel wires, and the tension member 41 made of the strand wire is superior in strength to ordinary steel bars and is left in the ground as it is. Since it may become an obstacle to the ground and cause problems such as underground compensation rights in the future development of neighboring lands, the tension member removal type which makes it easy to remove the tension member 41 buried in the ground after completion of construction to solve such problems. The internal anchoring body for the ground anchor is known from the patent No. 411567.

공지된 종래의 인장재 제거식 그라운드 앵커용 내부정착체는 도 2에 도시되어 있는 바와 같이 상단과 웨지좌(21)사이에 캡체결용 속나사(22)가 형성되고 웨지좌(21)의 앞쪽에 후퇴하는 웨지가 벌어질 수 있는 여유부(23)를 둔 본체(20)와, 선단부에 형성된 벌림링홈에 웨지용 벌림링(24)을 장착하고 벌림링홈의 앞쪽에 나사뿔의 시트 거치용 시트홈이 형성된 웨지(25a)로 이루어진 웨지조립체(25)와, 시트(26)의 상면복판에 캡에 체결되는 나사가 형성된 뿔나사(27)가 형성된 나사뿔(28)과 나사뿔 체결용 속나사(29)를 갖고 본체(20)의 캡체결용 속나사(22)에 체결되는 캡(30)으로 구성된다. Known conventional anchoring material for a tension removing ground anchor is a cap fastening screw 22 is formed between the top and the wedge seat 21, as shown in Figure 2 and in front of the wedge seat 21 The main body 20 having the clearance 23 for opening the wedges to retreat, and the wedge ring ring 24 is mounted in the ring ring groove formed at the distal end portion, and the seat groove for seat mounting of the screw horn in front of the ring ring groove. The wedge assembly (25) consisting of the formed wedge (25a), a screw horn (28) formed with a horn screw (27) having a screw fastened to a cap on the upper face plate of the seat (26) and a fastening screw for fastening screw horns ( 29 and a cap 30 fastened to the fastening screw 22 for cap fastening of the main body 20.

이와 같이 구성되는 종래의 인장재 제거식 그라운드 앵커용 내부정착체는 인장재(41)가 정착된 상태에서 외부정착체(33)를 해체하거나 외부정착체(33) 바로 안쪽의 인장재(41)부분을 용접기 등으로 절단하여 외부정착상태를 해제한 후 인장재(41)를 일측으로 틀게 되면, 상기 웨지조립체(25)가 나사뿔(28)이 캡(30)의 속나사(29)에 체결되는 힘에 이끌려 후퇴하면서 벌림링(24)에 의해 모든 웨지(25a)가 일시에 벌어져 인장재(41)의 선단에 대한 웨지물림을 해제하고, 이 상태에서 웨지조립체(25)에 결합된 나사뿔(28)이 캡(30)에 웨지조립체(25)를 고정함으로써 인장재(41)를 잡아당기더라도 웨지조립체(25)는 인장재(41)에 이끌려가지 못하게 한 가운데 간단히 인장재(41)를 인발 제거할 수 있게 된다.In the conventional tension member removal type ground anchor internal fixture configured as described above, the external fixture 33 is dismantled in the state in which the tension member 41 is fixed, or the portion of the tension material 41 immediately inside the external fixture 33 is welded. When the tension member 41 is twisted to one side after the external fixation state is released by cutting, etc., the wedge assembly 25 is attracted by the force that the screw horn 28 is fastened to the internal thread 29 of the cap 30. All wedges 25a are opened at once by the opening ring 24 to retreat to release the wedges about the tip of the tension member 41, and in this state, the threaded horns 28 coupled to the wedge assembly 25 are capped. By pulling the tension member 41 by fixing the wedge assembly 25 to the wedge assembly 25, the wedge assembly 25 can be pulled out of the tension member 41 while being prevented from being drawn by the tension member 41.

그러나, 상기와 같이 구성된 종래의 인장재 제거식 그라운드 앵커용 내부정착체는 인장재(41)의 회전에 따라 웨지조립체(25)에 결합된 나사뿔(28)이 캡(30)의 속나사(29)에 제대로 체결되기 위해서 도 2에 도시되어 있는 바와 같이 웨지조립체(25)에 결합된 나사뿔(28)의 상단부가 캡(30)에 형성된 속나사(29)의 입구에 맞닿아 있도록 조립되어야 하는데, 공장에서 제작된 앵커를 공사현장으로 운송하는 과정이나 시공작업시 취급하는 과정에서 앵커의 내부정착체에 예기지 못한 충격이 가해져 나사뿔(28)의 상단부가 속나사(29)의 입구로부터 이격되는 경우가 발생되거나, 앵커 시공후 인장재(41)의 자유단부에 하중을 가할 때 인장재(41)의 선단을 물고 있는 웨지조립체(25)가 본체(20)의 웨지좌(21)에 꽉 끼워지면서 웨지조립체(25)에 결합된 나사뿔(28)의 상단부가 속나사(29)의 입구로부터 이격되는 경우가 빈번하게 발생되므로써, 인장재의 제거시 나사뿔(28)과 속나사(29)의 체결이 제대로 이루어지지 않아 인장재(41)를 용이하게 제거할 수 없게 되는 치명적인 문제점을 내포하고 있었다.However, in the conventional tension member removable ground anchor inner fixing structure configured as described above, the threaded horn 28 coupled to the wedge assembly 25 according to the rotation of the tension member 41 is the internal thread 29 of the cap 30 In order to be properly fastened to the upper end of the screw pyramid 28 coupled to the wedge assembly 25 as shown in Figure 2 should be assembled so as to abut the inlet of the internal thread 29 formed in the cap 30, Unexpected impact is applied to the internal fixing body of the anchor during the process of transporting the anchor manufactured in the factory to the construction site or during the construction work so that the upper end of the screw horn 28 is separated from the inlet of the internal screw 29. In some cases, the wedge assembly 25 holding the tip of the tension member 41 is tightly fitted to the wedge seat 21 of the main body 20 when a load is applied to the free end of the tension member 41 after anchor construction. The upper end of the screw cone 28 coupled to the assembly 25 is Since the case is frequently spaced apart from the inlet of the yarn 29, when the tension member is removed, the screw pyramid 28 and the internal thread 29 are not properly fastened so that the tension member 41 cannot be easily removed. It was a fatal problem.

본 발명은 상기의 문제점을 해결하기 위하여 안출된 것으로서, 인장재의 제거시 외부정착을 해제한 상태의 인장재를 일측방향으로 회전시킴에 따라 인장재의 회전에 의해 나사식으로 이동하는 웨지받침구가 인장재를 고정하고 있는 웨지조립체를 원주방향으로 벌어지게 하면서 웨지삽입공으로부터 밀어내어 인장재에 대한 웨지물림상태를 해제시킬 수 있도록 구성되므로써, 그라운드 앵커의 해체시 보다 용이하고 간편하게 인장재를 제거할 수 있도록 할 수 있게 될 뿐 아니라 완성된 앵커의 운송과정이나 시공작업을 위한 취급시 가해지는 충격이나 하중에 의해 인장재에 대한 고정 및 해제기능이 손상되는 것을 완전히 방지할 수 있게 되는 것을 기술적 과제로 한다.The present invention has been made in order to solve the above problems, when the tension member is removed when the tension member in the state of releasing the external fixation by rotating the tension member in one direction by the rotation of the tension member is a wedge support port to move the tension member The wedge assembly is fixed in the circumferential direction and pushed away from the wedge insertion hole to release the wedge bite of the tension member, so that the tension member can be removed more easily and conveniently when dismantling the ground anchor. In addition, the technical task is to completely prevent the fixing and releasing function of the tension member from being damaged by the impact or load applied during the transportation or construction work of the completed anchor.

상기의 기술적 과제를 해결하기 위하여 본 발명은 상하로 개구된 원통형상으로 이루어지며 상단부외주연에는 캡체결나사부가 형성되고 내측상부에는 상광하협의 웨지삽입공이 형성되며 내측하부에는 웨지삽입공의 하부와 연결되는 웨지받침구체결공이 형성된 본체와, 상기 본체의 웨지삽입공에 웨지분리용 비닐테이프가 부착된 상태로 삽입설치되는 것으로, 3개의 원주분할웨지로 조립형성되며 외측상부에는 웨지조임링이 삽입되는 요홈부가 형성되며 내측하단에는 경사단부가 형성되고 중앙에는 나사공이 관통형성된 역원뿔대형상의 웨지조립체와, 상기 본체의 웨지받침구체결공에 삽입설치되는 것으로, 상단에 상기 웨지조립체의 경사단부로 쐐기식으로삽입되는 삽입경사단부가 형성되며 외주연에는 본체의 웨지받침구체결공에 나사결합되는 체결나사부가 형성되고 내측중앙에는 육각공이 관통형성된 웨지받침구와, 상기 본체의 캡체결나사부에 밀폐링을 개재하여 나사결합되는 보호캡으로 이루어진 것을 특징으로 한다.In order to solve the above technical problem, the present invention is formed in a cylindrical shape that is opened up and down, and the cap fastening screw portion is formed on the outer periphery of the upper end, and the wedge insertion hole of the upper and lower straits is formed on the inner upper portion, and the lower and The wedge support fastening hole is connected to the main body and the wedge insertion hole of the main body is inserted into the wedge separation vinyl tape is attached to the installation state, is formed of three circumferential split wedge and the wedge tightening ring is inserted into the outer upper portion The groove portion is formed, the inclined end portion is formed in the inner lower end and the inverted conical wedge assembly formed through the screw hole in the center and is inserted into the wedge support hole fastening hole of the main body, the inclined end portion of the wedge assembly at the top Insertion inclined end portion is inserted into the wedge shape and is screwed into the wedge support hole of the main body at the outer periphery. The fastening screw portion is formed, and the inner central portion of the wedge receiving port through which a hexagonal hole is formed, and a protective cap that is screwed through a sealing ring to the cap fastening screw portion of the main body.

이하, 상기의 목적을 달성하기 위하여 본 발명을 도 3 내지 도 7을 참고하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to FIGS. 3 to 7 to achieve the above object.

도 3은 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 구성을 나타내는 분해 사시도이며, 도 4는 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 조립상태를 나타내는 측단면도이고, 도 5는 도 4의 A-A선 단면도이며, 도 6의 (가)(나)(다)는 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 작용상태를 나타내는 측단면도이고, 도 7은 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 다른 실시예를 나타내는 평면도이다. Figure 3 is an exploded perspective view showing the configuration of the internal anchoring body for the tension member removal ground anchor according to the present invention, Figure 4 is a side cross-sectional view showing the assembled state of the internal anchoring body for the tension member removal ground anchor according to the present invention, 5 is a cross-sectional view taken along the line AA of Figure 4, (a) (b) (c) of Figure 6 is a side cross-sectional view showing the operating state of the inner fixing body for the tension member removal ground anchor according to the present invention, Figure 7 It is a top view which shows another Example of the internal fixing body for tension material removal type ground anchors by this.

도 3에 도시되어 있는 바와 같이 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체는 본체(5), 웨지조립체(10), 웨지분리용 비닐테이프(10a), 웨지받침구(13), 보호캡(15)으로 구성되어 있다.As shown in FIG. 3, the inner fixing body for the tension member-removable ground anchor according to the present invention includes a main body 5, a wedge assembly 10, a wedge separating vinyl tape 10a, and a wedge support 13. The cap 15 is comprised.

상기 본체(5)는 상하로 개구된 원통형상으로 이루어지며, 상단부외주연에는 캡체결나사부(2)가 형성되고, 내측상부에는 상광하협의 웨지삽입공(3)이 형성되며, 내측하부에는 웨지삽입공(3)의 하부와 연결되며 내주면에 나사부가 형성된 웨지받침구체결공(4)이 형성된다. The main body 5 is formed in a cylindrical shape that is opened up and down, the cap fastening screw portion 2 is formed on the outer periphery of the upper end, the wedge insertion hole 3 of the upper and lower narrow is formed in the inner upper portion, the wedge in the inner lower portion It is connected to the lower portion of the insertion hole (3) is formed on the inner circumferential surface wedge receiving hole fastening hole (4) is formed.

상기 웨지조립체(10)는 본체(5)의 웨지삽입공(3)에 삽입설치되는 것으로서, 3개의 원주분할웨지(6)로 조립형성된 역원뿔대형상으로 이루어지며, 외측상부에는 웨지조임링(7)이 삽입되는 요홈부(8)가 형성되고 내측하단에는 경사단부(6a)가 형성되며 중앙에는 인장재가 삽입되는 나사공(9)이 관통형성된다. 그리고, 상기 웨지조임링(7)은 3개의 원주분할웨지(6)로 이루어진 웨지조립체(10)가 인장재의 외주연에 밀착되도록 조여주는 역할을 하는 것으로서, 고무재질로 된 오링이 사용된다.The wedge assembly (10) is inserted into the wedge insertion hole (3) of the main body (5), and consists of an inverted truncated conical shape formed of three circumferential split wedges (6), and a wedge tightening ring (7) on the outer upper portion. ) Is formed in the groove portion 8 is inserted into the inclined end portion (6a) is formed in the inner lower end and the threaded hole (9) through which the tension member is inserted is formed in the center. In addition, the wedge tightening ring 7 serves to tighten the wedge assembly 10 including three circumferential split wedges 6 to be in close contact with the outer circumference of the tension member, and an O-ring made of rubber material is used.

상기 웨지분리용 비닐테이프(10a)는 웨지조립체(10)의 외측면에 부착되는 것으로서, 일반적인 전기절연용 테이프나 테프론 테이프 등이 주로 사용된다. 이 웨지분리용 비닐테이프(10a)는 그라운드 앵커의 설치시 인장재에 걸리는 강한 인장력으로 인하여 본체(5)의 웨지삽입공(3)에 삽입된 웨지조립체(10)가 금속간의 마찰열에 의해 웨지삽입공(3)의 내면에 견고하게 밀착되는 것을 방지하게 되므로써 인장재의 제거시 인장재를 고정하고 있는 웨지조립체(10)를 작은 힘으로도 본체(5)의 웨지삽입공(3)으로부터 용이하게 분리시킬 수 있게 된다. The wedge separation vinyl tape 10a is attached to the outer surface of the wedge assembly 10, and a general electrical insulating tape or teflon tape is mainly used. This wedge separation vinyl tape (10a) is a wedge insertion hole due to frictional heat between metals of the wedge assembly (10) inserted into the wedge insertion hole (3) of the main body 5 due to the strong tension applied to the tension member when the ground anchor is installed It is possible to easily separate the wedge assembly 10 holding the tension member from the wedge insertion hole 3 of the main body 5 with a small force by preventing the tight contact with the inner surface of the (3). Will be.

상기 웨지받침구(13)는 인장재의 회전에 따라 자유롭게 회전가능하도록 본체(5)의 웨지받침구체결공(4)에 삽입설치되는 것으로, 상단에는 상기 웨지조립체(10)의 경사단부(6a)로 삽입되어 웨지조립체(10)를 원주방향으로 벌어지게 하는 삽입경사단부(13a)가 형성되며, 외주연에는 본체(5)의 체결공(4)에 나사결합되는 체결나사부(11)가 형성되고 내측에는 인장재가 삽입되는 육각공(12)이 관통형성된다.The wedge supporter 13 is inserted into the wedge supporter fastening hole 4 of the main body 5 so as to be freely rotatable in accordance with the rotation of the tension member, the upper end of the inclined end portion 6a of the wedge assembly 10 Insertion inclined end 13a is formed to be inserted into the open wedge assembly 10 in the circumferential direction, and a fastening screw portion 11 that is screwed into the fastening hole 4 of the main body 5 is formed on the outer circumference. Inside the hexagonal hole 12 through which the tension member is inserted is formed.

상기 웨지받침구(13)의 상단에 형성된 삽입경사단부(13a)는 웨지조립체(10)의 나사공(9)내측에 쐐기식으로 삽입될 수 있도록 웨지조립체(10)의 내측하단에 형성된 경사단부(6a)와 동일하게 45 내지 60도 범위내의 경사각을 가지도록 형성하는 것이 바람직하다. The inclined end portion 13a formed at the upper end of the wedge support 13 is inclined end portion formed at the inner lower end of the wedge assembly 10 so as to be inserted into the screw hole 9 of the wedge assembly 10 in a wedge manner. It is preferable to form so as to have an inclination angle in the range of 45-60 degree similarly to (6a).

상기 육각공(12)은 도 5에 도시되어 있는 바와 같이 그라운드 앵커의 인장재로서 통상적으로 사용되고 있는 7개의 강선을 꼬아 만든 강연선의 단면형상과 동일하게 형성된 것으로서, 이 육각공(12)을 통해 인장재(41)를 삽입한 후 인장재의 제거시 인장재(41)를 회전시키게 되면 인장재(41)의 회전에 의해 웨지받침구체결공(4)에 체결된 웨지받침구(13)가 함께 회전하게 되므로써 웨지받침구(13)가 본체(5)의 웨지받침구체결공(4)의 나사부를 따라 자유롭게 이동할 수 있게 된다.As shown in FIG. 5, the hexagonal hole 12 is formed in the same shape as the cross-sectional shape of the stranded wire twisted by seven steel wires that are commonly used as the tensioning member of the ground anchor. When the tension member 41 is rotated when the tension member is removed after the 41 is inserted, the wedge support hole 13 fastened to the wedge support hole fastening hole 4 by the rotation of the tension member 41 rotates together. The sphere 13 is free to move along the threaded portion of the wedge receiving hole fastening hole 4 of the body (5).

상기 보호캡(15)은 본체(5)의 캡체결나사부(2)에 밀폐링(14)을 개재하여 나사결합되는 것으로서, 본체(5)의 내부로 수분이나 이물질 등이 침입하는 것을 차단하게 되므로써 웨지삽입공(3)에 삽입된 웨지조립체(10)를 보호하게 된다. 상기 밀폐링(14)으로는 고무재질로 된 오링이 사용된다.The protective cap 15 is screwed to the cap fastening screw portion 2 of the main body 5 via a sealing ring 14, thereby preventing the ingress of moisture or foreign matter into the main body 5. It protects the wedge assembly 10 inserted into the wedge insertion hole (3). As the sealing ring 14, an O-ring made of rubber material is used.

상기와 같이 구성되는 본 발명의 내부정착체에 의한 인장재의 고정과정을 설명하면 다음과 같다. Referring to the fixing process of the tension member by the internal fixing body of the present invention configured as described above are as follows.

우선 인장재(41)의 선단부를 본체(5)의 하단중앙에 관통형성된 웨지받침구체결공(4)으로 삽입하여 웨지받침구체결공(4)의 상부에 위치하도록 체결된 웨지받침구(13)의 육각공(12)을 통해 웨지삽입공(3)의 상부로 돌출시킨다. First, the wedge support 13 is fastened so that the tip end portion of the tension member 41 is inserted into the wedge support hole fastening hole 4 formed in the center of the lower end of the main body 5 so as to be positioned above the wedge support hole fastening hole 4. Through the hexagonal hole 12 of the wedge insertion hole (3) protrudes.

이어서, 웨지삽입공(3)의 상부로 돌출시킨 인장재(41)의 선단부에 웨지조립체(10)을 끼우고 웨지조립체(10)의 외측면에 웨지분리용 비닐테이프(10a)를 부착한 다음 인장재(41)를 하방으로 끌어당겨 인장재(41)의 선단부에 끼워진 웨지조립체(10)가 본체(5)의 웨지삽입공(3)내에 안착되도록 한다. Subsequently, the wedge assembly 10 is inserted into the front end of the tension member 41 protruding to the upper portion of the wedge insertion hole 3, and the vinyl tape 10a for wedge separation is attached to the outer surface of the wedge assembly 10, and then the tension member (41) is pulled downward so that the wedge assembly (10) fitted to the tip of the tension member (41) is seated in the wedge insertion hole (3) of the main body (5).

이어서, 본체(5)의 내부로 수분이나 이물질 등이 침입하지 않도록 인장재(41)가 삽입된 본체(5)의 상부에 밀폐링(14)을 개재하여 보호캡(15)을 나사결합하고, 본체(5)의 웨지받침구체결공(4)하부에 인장재(41)의 외측에 씌워진 튜브(41a)의 끝단부를 튜브(41a)외측에 나사산이 형성되면서 억지로 체결되도록 끼워 넣으므로써 도 4에 도시되어 있는 바와 같이 본 발명에 의한 내부정착체에 인장재를 견고하게 고정시킬 수 있게 된다. Subsequently, the protective cap 15 is screwed through the sealing ring 14 on the upper portion of the main body 5 into which the tension member 41 is inserted so as to prevent moisture or foreign matters from entering into the main body 5. It is shown in Fig. 4 by inserting the end of the tube 41a, which is covered with the outer side of the tension member 41 under the wedge support hole fastening hole 4 of 5, so as to be forcibly fastened while a thread is formed outside the tube 41a. As it is possible to firmly fix the tension member to the internal fixing body according to the present invention.

상기한 바와 같이 본 발명에 의한 내부정착체에 인장재를 고정시키게 되면 웨지조임링(7)의 조임력에 의해 인장재(4)의 선단부외주연에 밀착된 웨지조립체(10)가 본체(5)의 상단과 보호캡(15)의 내측상면사이에 형성된 공간내에서 인장재(4)의 선단부와 함께 일체로 움직이게 되므로, 외부로부터 충격이 가해져 인장재(41)의 선단부에 끼워진 웨지조립체(10)가 인장재(41)와 함께 웨지삽입공(3)으로부터 순간적으로 이탈하게 되더라도 인장재(4)의 선단부외주연에 밀착된 웨지조립체(10)가 본체(5)의 상단과 보호캡(15)의 내측상면사이에 형성된 공간에 머물러 있다가 인장재(41)에 인장하중이 가해질 때 다시 웨지삽입공(3)에 안착되므로써 견고한 고정상태를 유지할 수 있게 된다. When the tension member is fixed to the inner fixing body according to the present invention as described above, the wedge assembly 10 in close contact with the outer periphery of the distal end of the tension member 4 by the tightening force of the wedge tightening ring 7 is the upper end of the main body 5 And the wedge assembly 10 fitted to the distal end of the tension member 41 by being impacted from the outside because it moves together with the distal end of the tension member 4 in the space formed between the inner upper surface of the protective cap 15 and the tension member 41. A wedge assembly 10, which is in close contact with the outer periphery of the distal end portion of the tension member 4, is formed between the upper end of the main body 5 and the inner upper surface of the protective cap 15 even though the wedge insertion hole 3 is momentarily separated from the wedge insertion hole 3). Staying in the space, when the tension load is applied to the tension member 41 is seated in the wedge insertion hole (3) again to maintain a firm fixed state.

따라서, 본 발명의 내부정착체에 의하면 완성된 앵커의 운송과정이나 시공작업을 위한 취급시 가해지는 충격이나 하중에 의해 인장재에 대한 고정상태가 느슨해지거나 해제되는 것을 완전히 방지할 수 있게 된다.Therefore, according to the internal fixing body of the present invention, it is possible to completely prevent the fixing state of the tension member from loosening or releasing by the impact or the load applied during the transport process or the handling for the construction work of the completed anchor.

다음은 본 발명의 내부정착체에 의해 고정된 인장재의 제거과정에 대해서 도 6의 (가)(나)(다)을 참조하여 설명한다.Next, a process of removing the tension member fixed by the internal fixing body of the present invention will be described with reference to FIG. 6 (a) (b) (d).

도 6의 (가)에 도시되어 있는 바와 같이 외부정착이 해제된 인장재(41)의 자유단부를 손이나 바이스 플라이스와 같은 공구를 이용하여 반시계방향으로 회전시키게 되면, 웨지받침구(13)가 회전하게 되면서 웨지받침구체결공(4)의 나사부를 따라 웨지삽입공(3)에 삽입되어 있는 웨지조립체(10)의 하단부로 이동하게 된다. 이때 웨지받침구(13)의 상단에 형성된 삽입경사단부(13a)가 웨지조립체(10)의 하단부내측으로 삽입되면서 웨지조립체(10)의 내측하단에 형성된 경사단부(6a)에 접촉하게 된다.As shown in (a) of FIG. 6, when the free end of the tension member 41 whose external fixation is released is rotated counterclockwise by using a tool such as a hand or a vise ply, the wedge support 13 is As it rotates, it moves along the threaded portion of the wedge support ball fastening hole 4 to the lower end of the wedge assembly 10 inserted into the wedge insertion hole 3. At this time, the insertion inclined end portion 13a formed at the upper end of the wedge support 13 is inserted into the lower end of the wedge assembly 10 while contacting the inclined end portion 6a formed at the inner lower end of the wedge assembly 10.

이와 같이 된 상태에서 인장재(41)를 계속 회전시키게 되면, 도 6의 (나)에 도시되어 있는 바와 같이 웨지받침구(13)의 이동에 따라 웨지받침구(13)의 삽입경사단부(13a)가 웨지조립체(10)의 경사단부(6a)을 타고 웨지조립체(10)의 나사공(9)내측으로 쐐기식으로 삽입되므로써 웨지조립체(10)의 하단부가 원주방향으로 벌어지게 되어 인장재(41)의 외주면에 견고하게 박혀 있던 웨지조립체(10)의 나사공(9)에 형성된 나사산들이 인장재(41)의 외주면으로부터 떨어지게 되어 마찰력이 최소화되는 동시에, 웨지받침구(13)의 이동에 의해 웨지조립체(10)가 웨지삽입공(3)으로부터 서서히 밀려 나가게 된다. When the tension member 41 is continuously rotated in this state, the inclined end portion 13a of the wedge supporter 13 is moved in accordance with the movement of the wedge supporter 13 as shown in FIG. The lower end of the wedge assembly 10 is opened in the circumferential direction by being wedgely inserted into the threaded hole 9 of the wedge assembly 10 through the inclined end 6a of the wedge assembly 10. The threads formed in the threaded hole 9 of the wedge assembly 10 firmly embedded in the outer peripheral surface of the wedge assembly are separated from the outer peripheral surface of the tension member 41 so that the frictional force is minimized, and the wedge assembly 13 is moved by the movement of the wedge support hole 13. 10) is pushed out slowly from the wedge insertion hole (3).

따라서, 인장재(41)를 계속 회전시킴에 따라 함께 회전하게 되는 웨지받침구(13)에 이동에 의해 웨지삽입공(3)을 이탈하게 된 웨지조립체(10)는 웨지삽입공(3)의 내측면으로부터 이격되어 더 이상 웨지효과를 발휘할 수 없게 되는 상태에 이르게 되고, 이 상태에서 인장재(41)를 끌어당기게 되면 도 6의 (다)에 도시되어 있는 바와 같이 내부정착체(1)로부터 인장재(41)를 보다 용이하게 제거할 수 있게 되는 것이다.Therefore, the wedge assembly 10 which is disengaged from the wedge insertion hole 3 by moving to the wedge support opening 13 which rotates together as the tension member 41 continues to rotate is the inside of the wedge insertion hole 3. When the tension member 41 is attracted in this state, the tension member is separated from the inner fixing body 1 as shown in FIG. 6C. 41 can be removed more easily.

또한, 본 발명에 의한 내부정착체는 이상의 설명과 같은 단구형 뿐 아니라 도 7에 도시되어 있는 바와 같이 하나의 본체(5)에 4개의 웨지조립체(10)가 각각 삽입되는 4개의 웨지삽입공(3)이 형성된 4구형이나 6구형 등으로도 제작이 가능하다.In addition, the internal fixing body according to the present invention has four wedge insertion holes into which the four wedge assemblies 10 are inserted into one main body 5, as shown in FIG. 3) formed 4 sphere or 6 sphere can be manufactured.

상기와 같이 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체는 인장재의 제거시 외부정착을 해제한 상태의 인장재를 일측방향으로 회전시킴에 따라 인장재의 회전에 의해 나사식으로 이동하는 웨지받침구가 인장재를 고정하고 있는 웨지조립체를 원주방향으로 벌어지게 하면서 웨지삽입공으로부터 밀어내어 인장재에 대한 웨지물림상태를 해제시킬 수 있도록 구성되므로써, 그라운드 앵커의 해체시 보다 용이하고 간편하게 인장재를 제거할 수 있게 될 뿐 아니라 완성된 앵커의 운송과정이나 시공작업을 위한 취급시 가해지는 충격이나 하중에 의해 인장재에 대한 고정 및 해제기능이 손상되는 것을 완전히 방지할 수 있게 되는 효과가 있는 것이다.As described above, the inner fixing body for the tension member-removable ground anchor according to the present invention is a wedge support that moves in a screwed manner by rotating the tension member as the tension member is rotated in one direction when the tension member is released when the tension member is removed. The wedge assembly holding the tension member in the circumferential direction can be pushed out of the wedge insertion hole to release the wedge bite from the tension member, thereby making it easier and easier to remove the tension member when dismantling the ground anchor. In addition, it is possible to completely prevent the fixing and releasing function of the tension member from being damaged by the impact or load applied during the transportation process or construction work of the completed anchor.

도 1은 일반적인 그라운드 앵커의 시공상태를 나타내는 설명도.1 is an explanatory diagram showing a construction state of a general ground anchor;

도 2는 종래기술에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 조립상태를 나타내는 측단면도. Figure 2 is a side cross-sectional view showing the assembled state of the inner fixing body for the tension member removal ground anchor according to the prior art.

도 3은 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 구성을 나타내는 분해 사시도.Figure 3 is an exploded perspective view showing the configuration of the inner fixing body for the tension member removal ground anchor according to the present invention.

도 4는 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 조립상태를 나타내는 측단면도.Figure 4 is a side cross-sectional view showing an assembled state of the inner fixing body for the tension member removal ground anchor according to the present invention.

도 5는 도 4의 A-A선 단면도.5 is a cross-sectional view taken along the line A-A of FIG.

도 6의 (가)(나)(다)는 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 작용상태를 나타내는 측단면도.Figure 6 (a) (b) (c) is a side cross-sectional view showing the operating state of the inner fixing body for the tension member removal ground anchor according to the present invention.

도 7은 본 발명에 의한 인장재 제거식 그라운드 앵커용 내부정착체의 다른 실시예를 나타내는 평면도. Figure 7 is a plan view showing another embodiment of the inner fixing body for the tension member removable ground anchor according to the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1 : 내부정착체 2 : 캡체결나사부1: Internal fixing body 2: Cap tightening screw part

3 : 웨지삽입공 4 : 웨지받침구체결공3: wedge insertion hole 4: wedge support hole fastening

5 : 본체 6 : 원주분할웨지5: body 6: circumferential split wedge

6a : 경사단부 7 : 웨지조임링6a: inclined end 7: wedge tightening ring

8 : 요홈부 9 : 나사공8 groove 9: screw hole

10 : 웨지조립체 10a : 웨지분리용 비닐테이프 10: wedge assembly 10a: vinyl tape for wedge separation

11 : 체결나사부 12 : 육각공11 tightening screw 12 hex hole

13 : 웨지받침구 13a : 삽입경사단부 13: wedge support 13a: insertion inclined end

14 : 밀폐링 15 : 보호캡 14: sealing ring 15: protective cap

Claims (1)

상하로 개구된 원통형상으로 이루어지며 상단부외주연에는 캡체결나사부(2)가 형성되고 내측상부에는 상광하협의 웨지삽입공(3)이 형성되며 내측하부에는 웨지삽입공(3)의 하부와 연결되는 웨지받침구체결공(4)이 형성된 본체(5)와,It consists of a cylindrical shape opened up and down, the cap fastening screw portion (2) is formed on the outer periphery of the upper end, and the wedge insertion hole (3) of the upper and lower strait is formed on the inner upper part, and connected to the lower part of the wedge insertion hole (3) on the inner lower part. The main body 5 and the wedge support hole fastening hole 4 is formed, 상기 본체(5)의 웨지삽입공(3)에 웨지분리용 비닐테이프(10a)가 부착된 상태로 삽입설치되는 것으로, 3개의 원주분할웨지(6)로 조립형성되며 외측상부에는 웨지조임링(7)이 삽입되는 요홈부(8)가 형성되며 내측하단에는 경사단부(6a)가 형성되고 중앙에는 나사공(9)이 관통형성된 역원뿔대형상의 웨지조립체(10)와,Wedge inserting hole (3) of the main body (5) is inserted into the wedge separation vinyl tape (10a) is attached to the installation state, it is formed of three circumferential split wedges (6) and formed on the outer upper wedge ring ( 7 is inserted into the groove portion (8) is formed and the inclined end portion (6a) is formed at the inner lower end and the wedge assembly 10 of the inverted truncated conical shape formed through the screw hole (9) in the center, 상기 본체(5)의 웨지받침구체결공(4)에 삽입설치되는 것으로, 상단에 상기 웨지조립체(10)의 경사단부(6a)로 쐐기식으로 삽입되는 삽입경사단부(13a)가 형성되며 외주연에는 본체(5)의 웨지받침구체결공(4)에 나사결합되는 체결나사부(11)가 형성되고 내측중앙에는 육각공(12)이 관통형성된 웨지받침구(13)와,Being inserted into the wedge support ball fastening hole 4 of the main body 5, the inclined end portion (13a) is inserted into the inclined end portion (6a) of the wedge assembly (10) at the top is formed At the peripheral portion, a fastening screw portion 11 is formed to be screwed into the wedge receiving hole fastening hole 4 of the main body 5, and a wedge receiving hole 13 through which a hexagonal hole 12 is formed in the inner center thereof, 상기 본체(5)의 캡체결나사부(2)에 밀폐링(14)을 개재하여 나사결합되는 보호캡(15)으로 이루어진 것을 특징으로 하는 인장재 제거식 그라운드 앵커용 내부정착체.Internal fixing body for the tension member removable ground anchor, characterized in that made of a protective cap (15) screwed through the sealing ring 14 to the cap fastening screw portion (2) of the main body (5).
KR1020050022856A 2005-03-18 2005-03-18 Internal fixture of tension wire removal type ground anchorage KR100586078B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210043767A (en) * 2019-10-11 2021-04-22 김정열 Anchor Module
KR102345139B1 (en) * 2021-05-31 2021-12-30 이승혁 Tension member removal type ground anchor and construction method for use of that

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100953995B1 (en) 2009-07-01 2010-04-21 하영이 Multihole-type internal fixture of tension wire removal type ground anchorage
KR100958158B1 (en) * 2009-08-21 2010-05-18 (주)엔코텍 Removal anchor
KR102288507B1 (en) * 2019-04-30 2021-08-11 경희대학교 산학협력단 strand joint structure for safe disassembly

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Publication number Priority date Publication date Assignee Title
KR100435070B1 (en) * 2001-12-17 2004-06-09 주식회사 삼우기초기술 inner fixing device for a tension member removetype ground anchor
KR100435069B1 (en) * 2001-12-17 2004-06-09 주식회사 삼우기초기술 inner fixing device for a tension member removetype ground anchor
KR100487894B1 (en) * 2002-03-20 2005-05-10 김준홍 Removal anchor to possess the deactivation means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210043767A (en) * 2019-10-11 2021-04-22 김정열 Anchor Module
KR102345139B1 (en) * 2021-05-31 2021-12-30 이승혁 Tension member removal type ground anchor and construction method for use of that

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