KR101182372B1 - Structure for preventing damage of expansion pack with earth anchor - Google Patents

Structure for preventing damage of expansion pack with earth anchor Download PDF

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KR101182372B1
KR101182372B1 KR1020100081629A KR20100081629A KR101182372B1 KR 101182372 B1 KR101182372 B1 KR 101182372B1 KR 1020100081629 A KR1020100081629 A KR 1020100081629A KR 20100081629 A KR20100081629 A KR 20100081629A KR 101182372 B1 KR101182372 B1 KR 101182372B1
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expansion pack
pack
expansion
strand
coupled
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KR20120018656A (en
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신동은
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신동은
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    • 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
    • E02D5/803Ground anchors with pivotable anchoring members
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12Consolidating by placing solidifying or pore-filling substances in the soil
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008Anchoring or tensioning means
    • 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

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

본 발명은 중심유지구 및 강연선고정구에 의해 확장팩이 파손되는 것을 방지할 수 있는 어스앵커용 확장팩의 파손방지구조에 관한 것이다.
종래의 중심유지구는 확장팩에 직접 결합되어 그라우트를 타설함에 따라 결합부위가 파손되고, 강연선고정구는 앵커공과의 마찰에 의해 확장팩을 파손시키는 문제점이 있는데, 이를 해결하기 위하여 본 발명은 복수의 강연선을 고정하는 강연선고정구의 외측에 확장팩이 설치된 어스앵커에 있어서, 상기 강연선과 확장팩 사이에 상하로 간격을 이루며 방사상으로 설치된 복수의 중심유지구는 선단이 강연선에 결합되고 타단은 확장팩의 외측으로 돌출되어 지지구에 결합되며, 상기 강연선고정구가 설치된 확장팩의 외측에는 보호망이 구비되되, 상기 지지구에는 중심유지구가 결합되는 한 쌍의 관통공이 형성되고, 저면에는 확장팩의 외주면에 밀착될 수 있도록 곡선부가 형성된 것을 특징으로 하는 어스앵커용 확장팩의 파손방지구조를 제안한다.
따라서 본 발명은 지지구는 그라우트 타설에 의한 확장팩 및 중심유지구의 팽창으로 인한 확장팩의 파손을 방지하고, 보호망은 강연선고정구에 의한 확장팩과 앵커공 사이의 마찰을 방지하여 확장팩의 파손을 방지하는 효과가 있다.
The present invention relates to a damage preventing structure of the expansion pack for earth anchors, which can prevent the expansion pack from being damaged by the center holding zone and the strand anchoring tool.
Conventional center retaining zone is directly coupled to the expansion pack and the coupling portion is broken as the grout is poured, the strand anchorage has a problem that the expansion pack is damaged by friction with the anchor hole, the present invention to fix a plurality of strands In the earth anchor installed in the extension pack to the outside of the strand anchorage, the plurality of central holding zones radially installed and spaced up and down between the strand and the expansion pack, the tip is coupled to the strand and the other end protrudes out of the expansion pack to the support It is coupled, the outer side of the expansion pack is installed in the extension line is provided with a protective net, the support is formed with a pair of through-hole is coupled to the center holding, the bottom surface is characterized in that the curved portion is formed to be in close contact with the outer peripheral surface of the expansion pack We propose a damage prevention structure of the expansion pack for earth anchors.
Therefore, the present invention prevents damage of the expansion pack due to expansion of the expansion pack and the center holding by the grout placing, and the protection net is effective to prevent the damage of the expansion pack by preventing friction between the expansion pack and the anchor hole by the twisted wire anchorage. .

Description

어스앵커용 확장팩의 파손방지구조{Structure for preventing damage of expansion pack with earth anchor}Structure for preventing damage of expansion pack with earth anchor}

본 발명은 확장팩을 이용한 어스앵커에 관한 것으로, 더욱 상세하게는 중심유지구 및 강연선고정구에 의해 확장팩이 파손되는 것을 방지할 수 있는 어스앵커용 확장팩의 파손방지구조에 관한 것이다.
The present invention relates to an earth anchor using an expansion pack, and more particularly, to a damage preventing structure of the expansion pack for earth anchors, which can prevent the expansion pack from being damaged by the center holding zone and the strand fixing fixture.

일반적으로 어스 앵커 공법은 흙막이벽에 구멍을 뚫어 철근이나 PC강선을 집어넣은 다음, 모르타르를 그라우팅(Grouting)하여 채우고 뒷면에 앵커를 만들어 흙막이벽을 잡아매는 공법으로 버팀대 대신 흙막이벽을 어스 드릴(Earth Drill)로 구멍 뚫은 뒤 그 속에 철근이나 PC강선 등의 인장재를 넣고, 그 주위를 모르타르로 그라우팅하여 굳힌 다음 외부에서 PC강선이나 철근 등에 인장력을 가해 정착시키는 흙막이공법이다.In general, the earth anchor method is a method of drilling a hole in the wall, inserting reinforcing steel or PC steel wire, grouting and filling the mortar, and anchoring the back wall to secure the wall, instead of braces. After drilling with a drill, put a reinforcing material such as reinforcing bar or PC steel wire in it, grout around it with a mortar to harden it, and fix it by applying tension to the PC steel wire or reinforcing bar from the outside.

그러나, 이러한 어스 앵커 공법은 주입재 유실이 발생하기 쉬운 지층 및 마찰저항력이 작은 지층에서 시공시 앵커공 내부의 주입재가 유실되어 마찰력을 기대할 수 없거나, 지반의 전단 강도가 작아 인장력을 발휘할 수 없게 된다. 또한 주입재의 유실이 발생할 경우 소요 인장력 확보를 위해 주변공극을 메워야 할 정도로 상당히 많은 양의 주입이 필요하다.However, such an earth anchor method is difficult to expect the friction force due to the loss of the injection material inside the anchor hole during the construction in the ground layer where the injection material loss is easy to occur and the ground layer having a low frictional resistance, or the tensile strength of the ground can not be exhibited due to the low shear strength. In addition, when the injection material is lost, a considerable amount of injection is required to fill the voids in order to secure the required tensile force.

따라서 최근에는 팩 앵커(Pack anchor)공법이 제안되고 있는데, 팩 앵커공법이란 정착부에 설치된 팩 내부에 그라우팅을 가압 주입하여 확공 양생된 정착 구근과 지반을 밀착시키는 공법으로서, 본원 발명인은 특허등록 제10-0948051호 "확장팩을 이용한 어스앵커" 에서 이를 제안한 바 있다.Therefore, a pack anchor method has recently been proposed. The pack anchor method is a method of injecting grouting into the pack installed in the fixing part to closely contact the expansion-cured fixation bulb and the ground. 10-0948051 "Earth Anchor with Extension Pack" suggested this.

도 1은 종래의 확장팩을 이용한 어스앵커의 설치상태를 나타낸 단면도로서 앵커공(1)의 내측에는 복수의 강연선(2)이 삽입되고, 상기 강연선(2)은 복수의 강연선고정구(3)에 의해 견고히 고정되어 있다.1 is a cross-sectional view showing the installation state of the earth anchor using a conventional expansion pack, a plurality of strands (2) is inserted into the inside of the anchor hole (1), the strands (2) by a plurality of strand wire fixtures (3) It is firmly fixed.

상기 강연선(2) 및 강연선고정구(3)의 외측에는 확장팩(10)이 상측과 하측이 밀봉된 상태로 결합되어 있으며, 상기 확장팩(10)의 내부와 앵커공(1)에는 그라우트가 채워진다.The expansion pack 10 is coupled to the outer side of the strand 2 and the strand fixing device 3 in a sealed state of the upper side and the lower side, the grout is filled in the interior and the anchor hole (1) of the expansion pack (10).

이때 상기 강연선(2)과 확장팩(10)의 사이에는 선재로 이루어진 복수의 중심유지구(20)가 방사상으로 결합되어 있는데, 상기 중심유지구(20)는 균일한 폭으로 그라우트가 주입되도록 함으로써 어스앵커가 행커공(1)의 중심에 위치하게 하는 역할을 한다.At this time, a plurality of central holding zones 20 made of wire rods are radially coupled between the strand 2 and the expansion pack 10, and the central holding zones 20 are formed by allowing grout to be injected with a uniform width. The anchor serves to position the center of the hanger ball (1).

그러나 상기 중심유지구(20)는 확장팩(10)에 형성된 구멍을 통해 결속되기 때문에 그라우트에 의해 확장팩(10)이 팽창함에 따라 구멍이 자주 파손되어 본래의 역할을 수행하지 못하는 문제점이 있다.However, since the center retainer 20 is bound through a hole formed in the expansion pack 10, there is a problem in that the hole is frequently broken as the expansion pack 10 expands due to the grout, thereby failing to perform its original role.

또한, 어스앵커를 앵커공(1)에 삽입할 때 강연선고정구(3)에 의해 확장팩(10)이 앵커공(1)에 밀착됨으로써 확장팩(10)이 파손되는 문제점이 있다.
In addition, when the anchor anchor 1 is inserted into the anchor hole 1, the expansion pack 10 is in close contact with the anchor hole 1 by the twisted wire fixing tool 3, so that the expansion pack 10 may be damaged.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 중심유지구 및 강연선고정구에 의한 확장팩의 파손을 최소화할 수 있는 어스앵커용 확장팩의 파손방지구조를 제공하는데 목적이 있다.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a damage preventing structure of the expansion pack for earth anchors that can minimize the damage of the expansion pack by the center holding zone and the strand fixing fixture.

본 발명에 의한 어스앵커용 확장팩의 파손방지구조는 복수의 강연선을 고정하는 강연선고정구의 외측에 확장팩이 설치된 어스앵커에 있어서, 상기 강연선과 확장팩 사이에 상하로 간격을 이루며 방사상으로 설치된 복수의 중심유지구는 선단이 강연선에 결합되고 타단은 확장팩의 외측으로 돌출되어 지지구에 결합되며, 상기 강연선고정구가 설치된 확장팩의 외측에는 보호망이 구비되되, 상기 지지구에는 중심유지구가 결합되는 한 쌍의 관통공이 형성되고, 저면에는 확장팩의 외주면에 밀착될 수 있도록 곡선부가 형성된 것을 그 기술적 특징으로 한다.
The damage prevention structure of the earth anchor expansion pack according to the present invention is an earth anchor provided with an expansion pack on an outer side of a strand fixing fixture for fixing a plurality of strands, and a plurality of centers are disposed radially in a vertical direction at intervals between the strand and the expansion pack. Sphere end is coupled to the strand, and the other end is protruded to the outside of the expansion pack is coupled to the support, the protection net is provided on the outer side of the expansion pack is installed with the strand fixing fixture, the support is a pair of through holes coupled to the center holding Is formed, the bottom surface is characterized in that the curved portion is formed so as to be in close contact with the outer peripheral surface of the expansion pack.

본 발명에 따른 어스앵커용 확장팩의 파손방지구조에 의하면, 지지구는 그라우트 타설에 의한 확장팩 및 중심유지구의 팽창으로 인한 확장팩의 파손을 방지하고, 보호망은 강연선고정구에 의한 확장팩과 앵커공 사이의 마찰을 방지하여 확장팩의 파손을 방지하는 효과가 있다.
According to the damage preventing structure of the expansion pack for earth anchors according to the present invention, the support prevents the damage of the expansion pack due to expansion of the expansion pack and the center holding by the grout placing, the protection net is to prevent the friction between the expansion pack and the anchor hole by the wire anchorage It is effective to prevent damage to the expansion pack.

도 1은 종래의 확장팩을 이용한 어스앵커의 설치상태를 나타낸 단면도.
도 2는 본 발명에 의한 어스앵커용 확장팩의 파손방지구조를 도시한 부분 확대 단면도.
도 3은 본 발명에 의한 어스앵커용 확장팩의 파손방지구조를 도시한 부분 확대도.
도 4는 본 발명의 지지판을 도시한 사시도.
도 5는 도 3의 V-V선의 단면을 확대하여 나타낸 부분 단면도.
1 is a cross-sectional view showing the installation state of the earth anchor using a conventional expansion pack.
Figure 2 is a partially enlarged cross-sectional view showing a damage preventing structure of the expansion pack for earth anchors according to the present invention.
Figure 3 is a partially enlarged view showing the damage prevention structure of the earth anchor expansion pack according to the present invention.
Figure 4 is a perspective view of the support plate of the present invention.
FIG. 5 is an enlarged partial cross-sectional view of the VV line in FIG. 3. FIG.

본 발명의 바람직한 실시 예를 첨부된 도면을 통해 상세히 설명한다.Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 의한 어스앵커용 확장팩의 파손방지구조는 도 2 및 도 3에서 도시한 바와 같이 앵커공에 삽입된 복수의 강연선(2)이 강연선고정구(3)에 의해 견고히 고정되어 있으며, 상기 강연선(2) 및 강연선고정구(3)의 외측에는 내측에 그라우트가 채워진 확장팩(10)이 구비되어 있다.In the damage prevention structure of the earth anchor expansion pack according to the present invention, as shown in FIGS. 2 and 3, the plurality of strands 2 inserted into the anchor holes are firmly fixed by the strand twister 3 and the strands ( 2) and an extension pack 10 having grout filled inside on the outside of the strand fixing device 3 is provided.

그리고 상기 강연선(2)과 확장팩(10)의 사이에는 선재로 이루어진 복수의 중심유지구(20)가 방사상으로 결합되어 있는데, 상기 중심유지구(20)는 상하로 간격을 이루며 복수로 설치되어 확장팩(10)의 내측으로 그라우트가 타설될 때 어스앵커가 중심에 위치할 수 있도록 하는 역할을 한다.
And between the strand 2 and the expansion pack 10, a plurality of central holding zones 20 made of wire rods are radially coupled, the central holding zones 20 are spaced up and down and installed in a plurality of expansion packs It serves to allow the earth anchor to be centered when the grout is poured into (10).

상기 중심유지구(20)의 선단은 강연선에 결합되어 있으며, 타단은 확장팩(10)의 외측으로 돌출되어 지지구(30)에 결합되어 있는데, 상기 지지구(30)는 도 4에서 도시한 바와 같이 중심부에 한 쌍의 관통공(31)이 간격을 이루며 형성되어 있고, 저면에는 곡선부(32)가 형성되어 있다.The front end of the center retainer 20 is coupled to the strand, the other end is projected out of the expansion pack 10 is coupled to the support 30, the support 30 is shown in FIG. Similarly, a pair of through holes 31 are formed at intervals in the center, and curved portions 32 are formed at the bottom.

상기 지지구(30)는 확장팩(10)의 내측에 그라우트가 타설됨으로써 확장팩(10)이 팽창할 때 중심유지구(20)에 의해 확장팩(10)이 파손되는 것을 방지하게 된다.The support 30 prevents the expansion pack 10 from being damaged by the center holding hole 20 when the expansion pack 10 is inflated by the grout being poured into the expansion pack 10.

즉, 도 5에서 도시한 바와 같이 관통공(31)에 결합된 중심유지구(20)는 확장팩(10)의 내측에서 나선형으로 감겨 강연선에 고정되는데, 이때 지지구(30)의 곡선부(32)는 팽창된 확장팩(10)의 외주면에 밀착된다.That is, as shown in FIG. 5, the central retainer 20 coupled to the through hole 31 is spirally wound on the inner side of the expansion pack 10 and fixed to the strand, wherein the curved portion 32 of the support 30 is supported. ) Is in close contact with the outer peripheral surface of the expanded expansion pack (10).

따라서 그라우트가 팽창하더라도 중심유지구(20)가 확장팩(10)에서 이탈하지 않도록 지지함으로써 더욱 견고하게 어스앵커를 시공할 수 있다.
Therefore, even when the grout is expanded, the earth retainer 20 can be more firmly constructed by supporting the center retainer 20 not to be separated from the expansion pack 10.

한편, 상기 강연선고정구(3)가 설치된 확장팩(10)의 외측에는 보호망(40)이 구비되어 앵커공과의 마찰로 인한 확장팩(10)의 파손을 방지하게 된다.On the other hand, the protection net 40 is provided on the outside of the expansion pack 10 is installed the strand wire fixture 3 is to prevent damage to the expansion pack 10 due to friction with the anchor hole.

일반적으로 어스앵커는 강연선고정구(3)에 강연선(2)을 고정하고, 그 외측에 확장팩(10)을 설치한 상태에서 앵커공에 삽입되는데, 이때 강연선고정구(3)가 설치된 부분의 확장팩(10)이 앵커공의 내측 면과 밀착되면서 마찰에 의해 확장팩(10)이 파손되는 일이 빈번히 발생한다.In general, the anchor anchor is inserted into the anchor hole in the state of fixing the strand (2) to the strand line fixture (3), and the expansion pack 10 is installed on the outside, in which the strand line fixture (3) is installed expansion pack (10) ) Is in close contact with the inner surface of the anchor hole is often caused by the expansion pack 10 is damaged by friction.

따라서 앵커공에 어스앵커를 삽입하기 전에 미리 강연선고정구(3)의 외측에 보호망(40)을 두르고 테이프 등으로 고정한다.Therefore, before inserting the earth anchor in the anchor hole, the protection net 40 is wrapped around the outside of the strand wire fastener 3 in advance and fixed with a tape or the like.

그런 후 앵커공에 어스앵커를 삽입하면 보호망(40)에 의해 확장팩(10)이 보호되고, 상기 확장팩(10)에 그라우트를 타설하게 되면 팽창에 의해 테이프가 절단되면서 보호망(40)이 앵커공에 밀착된다.Then, when the anchor anchor is inserted into the anchor hole, the expansion pack 10 is protected by the protection net 40, and when the grout is poured into the expansion pack 10, the protection net 40 is cut into the anchor hole while the tape is cut by the expansion. Close contact.

상기 보호망(40)은 합성수지 또는 금속망으로 구성하는 것이 바람직하다.
The protective net 40 is preferably composed of a synthetic resin or a metal net.

이와 같이 구성된 본 발명에 의한 어스앵커용 확장팩의 파손방지구조는 지지구(30)가 그라우트 타설에 의한 확장팩(10) 및 중심유지구(20)의 팽창으로 인한 확장팩(10)의 파손을 방지하고, 보호망(40)은 강연선고정구(3)에 의한 확장팩(10)과 앵커공 사이의 마찰을 방지하여 확장팩(10)의 파손을 최대한 방지할 수 있다.
The damage preventing structure of the expansion pack for earth anchors according to the present invention configured as described above prevents the damage of the expansion pack 10 due to expansion of the expansion pack 10 and the center retainer 20 by the grout placing. , The protection net 40 can prevent the damage between the expansion pack 10 by preventing the friction between the expansion pack 10 and the anchor hole by the strand wire fastener (3).

상기와 같은 본 발명은 상술한 특정의 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.
The present invention as described above is not limited to the above-described specific embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various changes without departing from the gist of the present invention as claimed in the claims. will be.

10 : 확장팩 20 : 중심유지구
30 : 지지구 31 : 관통공
32 : 곡선부 40 : 보호망
10: Expansion Pack 20: Maintaining District
30: support 31: through hole
32: curved portion 40: protection net

Claims (3)

복수의 강연선을 고정하는 강연선고정구의 외측에 확장팩이 설치된 어스앵커에 있어서,
상기 강연선과 확장팩 사이에 상하로 간격을 이루며 방사상으로 설치된 복수의 중심유지구는 선단이 강연선에 결합되고 타단은 확장팩의 외측으로 돌출되어 지지구에 결합되며, 상기 강연선고정구가 설치된 확장팩의 외측에는 보호망이 구비되되,
상기 지지구에는 중심유지구가 결합되는 한 쌍의 관통공이 형성되고, 저면에는 확장팩의 외주면에 밀착될 수 있도록 곡선부가 형성된 것을 특징으로 하는 어스앵커용 확장팩의 파손방지구조.
In the earth anchor provided with an expansion pack on the outside of the strand fixing fixture for fixing a plurality of strands,
The plurality of central retainers radially installed at intervals between the strand and the expansion pack are radially installed, and the tip is coupled to the strand and the other end is protruded out of the expansion pack, and is coupled to the support. Equipped,
The support is provided with a pair of through-holes are coupled to the center holding, the bottom surface of the expansion pack for damage to earth anchors characterized in that the curved portion formed to be in close contact with the outer peripheral surface of the expansion pack.
제 1항에 있어서,
상기 보호망은 합성수지 또는 철망 중 어느 하나로 구성된 것을 특징으로 하는 어스앵커용 확장팩의 파손방지구조.
The method of claim 1,
The protection net is a damage preventing structure of the expansion pack for earth anchors, characterized in that consisting of any one of synthetic resin or wire mesh.
삭제delete
KR1020100081629A 2010-08-23 2010-08-23 Structure for preventing damage of expansion pack with earth anchor KR101182372B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101985506B1 (en) * 2017-11-30 2019-06-04 신동은 pack anchor apparatus for using reclaimed and fill-up ground

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948051B1 (en) * 2009-08-14 2010-03-19 신동은 Earth anchor using expansion pack

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948051B1 (en) * 2009-08-14 2010-03-19 신동은 Earth anchor using expansion pack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101985506B1 (en) * 2017-11-30 2019-06-04 신동은 pack anchor apparatus for using reclaimed and fill-up ground

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