KR20040011113A - A method of construction for temporary retaining wall - Google Patents

A method of construction for temporary retaining wall Download PDF

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Publication number
KR20040011113A
KR20040011113A KR1020020044519A KR20020044519A KR20040011113A KR 20040011113 A KR20040011113 A KR 20040011113A KR 1020020044519 A KR1020020044519 A KR 1020020044519A KR 20020044519 A KR20020044519 A KR 20020044519A KR 20040011113 A KR20040011113 A KR 20040011113A
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South Korea
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vertical
vertical piles
piles
tension
temporary
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KR1020020044519A
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Korean (ko)
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KR100584701B1 (en
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김정민
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김정민
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/083—Shoring struts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0071—Wood
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/40—Miscellaneous comprising stabilising elements

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

PURPOSE: A temporary sheeting method is provided to safely construct a temporary sheeting at low cost by considerably reducing the number of bridgings and horizontal reinforcing racks for supporting vertical piles and to effectively perform pit excavation by reducing interference of the bridging. CONSTITUTION: A temporary sheeting method is composed of vertical piles(10) perpendicularly driven; a retaining board inserted between the vertical piles with performing a pit excavation; horizontal reinforcing racks(14) horizontally installed in front of the vertical piles; bridgings(18) for supporting the horizontal reinforcing racks; brackets(32) longitudinally mounted in front of the vertical piles; and tendons(30) inserted into the bracket. Thus, the temporary sheeting method acts prestress for resisting against lateral pressure of a clay wall in the rear of the vertical piles contacting with the clay wall by applying prestress by tensioning the tendons.

Description

가설 흙막이 공법{A method of construction for temporary retaining wall}A method of construction for temporary retaining wall}

본 발명은 지하구조물을 시공하기 위한 터파기 현장에서 흙벽의 붕괴를 방지하기 위하여 설치하였다가 지하구조물의 공사완료 후에 제거하는 가설 흙막이 공법에 관한 것이다.The present invention relates to a temporary earthquake construction method that is installed to prevent the collapse of the earth wall at the trench site for construction of underground structures, and then removed after completion of construction of the underground structures.

종래의 가설 흙막이 공법은 도 7 과 도 8에 도시된 바와 같이 H-형강으로 된 수직파일(10)들을 임의의 간격으로 박아놓고, 수직파일(10)들 사이에 토류판(12)을 끼워 넣어 흙벽의 측압이 수직파일(10)들에 전달되도록 하고, 이 수직파일(10)들을 받쳐주기 위해서 띠장이라고 불리우는 H-형강으로 된 보강용 횡가목(14)을 수직파일(10)의 앞쪽에 고정되는 받침대(16)에 설치하며, 이 보강용 횡가목(14)들을 H-형강으로 된 버팀목(strut)(18)들로 지지시켜 주는 것이었다.In the conventional temporary soil blocking method, as shown in FIGS. 7 and 8, vertical piles 10 made of H-shaped steel are driven at random intervals, and the earth plate 12 is sandwiched between the vertical piles 10. The lateral pressure of the reinforcing cross member 14, which is called a band, is fixed to the front of the vertical pile 10 so that the side pressure of the vertical pile 10 is transmitted to the vertical piles 10 and to support the vertical piles 10. It was installed on the pedestal 16 and supported the reinforcing cross members 14 with struts 18 made of H-shaped steel.

이와 같은 종래의 가설 흙막이 공법은 도 9에 도시된 바와 같이 버팀목(18)들의 설치간격이 상, 하 또는 좌, 우로 넓을 경우 즉, 수직파일(10)과 보강용 횡가목 (14)의 지지간격이 넓어질수록 수직파일(10)들의 후면쪽으로부터 작용하는 흙벽의 측압(P)에 의해서 수직파일(10)과 보강용 횡가목(14)의 모멘트, 전단력, 처짐이 크게 증가하게 되므로 이로 인하여 공사장 주변의 지반침하 현상과 흙벽 붕괴에 의한 공사장 매몰사고와 같은 대형사고를 유발할 위험성이 매우 커지게 된다.Such a conventional temporary earthquake construction method is as shown in Figure 9 when the installation interval of the support 18 is wide, up, down, left, right, that is, the support interval of the vertical pile 10 and the reinforcing transverse wood 14 The wider the moment, shear force, and sag of the vertical pile 10 and the reinforcing transverse wood 14 are greatly increased by the lateral pressure P of the soil wall acting from the rear side of the vertical piles 10, thereby increasing the construction site. There is an increased risk of causing large-scale accidents such as ground subsidence and earthquake collapse.

따라서 종래에는 도 7과 도 8에 도시된 바와 같이 많은 양의 보강용 횡가목(14)과 버팀목(18)을 사용하고, 이들을 조밀한 간격으로 설치해주어야만 했었기 때문에 이들의 설치하거나 제거하는데 많은 비용, 시간 및 작업이 요구되었었고, 터파기 작업에 많은 지장을 주었었을 뿐만 아니라 철근 콘크리트로 지하구조물 (20)을 시공 할 때에도 많은 어려움이 있었다.Therefore, in the related art, a large amount of reinforcement transverse wood 14 and the support bar 18, as shown in Figs. 7 and 8, and had to be installed at close intervals, are expensive to install or remove them. Not only did it require time and work, but it also caused a lot of trouble in the digging work, and there were many difficulties in constructing the underground structure 20 with reinforced concrete.

즉, 많은 양의 버팀목(18)들로 인하여서 철근의 배근 및 조립과 거푸집의 설치가 매우 어려웠었고, 자재의 운반과 작업자의 활동에도 많은 지장을 주었었으며,That is, due to the large number of shorings (18), it was very difficult to reinforce the reinforcement and assembly of the reinforcement and the installation of the formwork, and also had a lot of problems in the transportation of materials and workers' activities,

특히 지하구조물(20)의 벽체(21)에 버팀목(18)이 관통될 수 밖에 없으므로 이 관통부분에서는 일부 철근이 연속하지 못하게 되어서 벽체(21)의 강도와 내구성을 저하시켜 주었었다.In particular, because the struts 18 must pass through the wall 21 of the underground structure 20, some of the reinforcing bars cannot be continuous in this through portion, thereby reducing the strength and durability of the wall 21.

또 지하구조물(20)의 공사완료 후에는 벽체(21) 속에 버팀목(18)의 일부를 남긴체 벽체(21)의 양쪽에서 버팀목(18)을 절단해 주어야만 했었고, 벽체(21)를 방수처리하더라도 상기 버팀목(18)의 절단부위에서 지하수의 누수가 초래되는등의 문제점이 있었다.In addition, after completion of the construction of the underground structure 20, the support 18 had to be cut from both sides of the wall 21, which left part of the support 18 in the wall 21, even if the wall 21 was waterproofed. There was a problem such as leakage of groundwater at the cut portion of the shoring (18).

본 발명은 굴착된 흙벽의 측압이 직접적으로 작용하는 수직파일에 흙벽의 측압에 크게 저항하는 모멘트를 가질 수 있도록 프리스트레스를 가해줌으로서 최소한의 보강용 횡가목과 버팀목만을 사용하면서 시공 할 수 있도록 하고 지하구조물을 시공할 때에는 버팀목으로 인한 간섭을 배제시켜 줄 수 있도록 버팀목을 단계별로 제거하면서 지하구조물을 시공할 수 있도록 해 줄 수 있는 가설 흙막이 공법을 제공하는데 기술적 과제를 둔 것이다.The present invention is to apply the pre-stress to the vertical pile that the side pressure of the excavated soil wall directly acts to have a moment that greatly resists the side pressure of the soil wall so that the construction can be carried out using only the minimum reinforcing transverse timber and shoring and underground structure In the construction, the technical task is to provide a temporary earthquake construction method that can be used to construct underground structures while removing the crutch step by step to eliminate the interference caused by the crutch.

도 1은 본 발명에 의한 가설 흙막이 공법의 한 실시예를 보인 측면도.Figure 1 is a side view showing an embodiment of a temporary construction method according to the present invention.

도 2는 도 1의 I-I선 확대 단면도.FIG. 2 is an enlarged sectional view taken along line II of FIG. 1. FIG.

도 3은 도 1의 평면도.3 is a plan view of FIG.

도 4는 본 발명에 의한 가설 흙막이 공법의 다른 실시예를 보인 측면도.Figure 4 is a side view showing another embodiment of the temporary construction method according to the present invention.

도 5는 도 4의 Ⅱ-Ⅱ선 확대 단면도.5 is an enlarged sectional view taken along line II-II of FIG. 4;

도 6은 도 4의 평면도.6 is a plan view of FIG. 4.

도 7은 종래 가설 흙막이 공법을 보인 측면도.Figure 7 is a side view showing a conventional temporary soil construction method.

도 8은 도 7의 평면도.8 is a plan view of FIG.

도 9는 흙벽의 측압에 의해서 가설 흙막이의 수직파일과 보강용 횡가목이 변형되는 상태를 설명하기 위한 사시도.9 is a perspective view for explaining a state in which the vertical pile and the reinforcing transverse of the temporary soil film is deformed by the lateral pressure of the soil wall.

도 1 ∼ 도 3에는 본 발명의 한 실시예에 의한 가설흙막이 공법이 표현되어 있다.1 to 3, a temporary soil film construction method according to an embodiment of the present invention is represented.

도 1 ∼ 도 3에 예시된 가설 흙막이 공법은 H-형강으로 된 수직파일(10)들을 세로방향으로 박아 놓고, 터파기를 하면서 수직파일(10)들 사이에 토류판(12)을 끼워 넣으며, 보강용 횡가목(14)들을 수직파일(10)들의 앞쪽에 고정되는 받침대(16)에 가로방향으로 설치하고, 버팀목(18)들로 상기 보강용 횡가목(14)들을 지지시켜주는 가설 흙막이 공법에 있어서, 강연선과 같은 긴장재(30)가 끼워지는 브래키트(32)를 수직파일(10)들의 양쪽 플랜지(34), (34')의 내측에 지그재그형태로 배열하여 고정시키고, 브래키트(32)들에 지그재그형태로 끼워진 긴장재(30)를 인장시켜 긴장력을 도입시킨 후 긴장재(30)의 양단부에 고정되는 정착구(36)로 긴장재(30)에 도입된 긴장력을 유지시켜 주어서 굴착된 흙벽과 접하는 수직파일(10)에 흙벽의 측압에 크게 저항하도록 프리스트레스가 작용되도록 한 것이다.1 to 3, the temporary soil block construction method illustrated in Fig. 1 is a vertical pile (10) made of H-shaped steel in the vertical direction, while inserting the earth plate 12 between the vertical piles 10 while dig, for reinforcement In the temporary earthquake construction method that the transverse trees 14 are installed in the transverse direction on the pedestal 16 fixed to the front of the vertical piles 10, and the supporters 18 support the reinforcing transverse trees 14. , Bracket 32 to which the tension member 30, such as a strand, is fitted, is arranged in a zigzag form and fixed to both sides of the flanges 34 and 34 'of the vertical piles 10, and the brackets 32 After tensioning the tension member 30 fitted in the zigzag form to introduce the tension force to maintain the tension force introduced into the tension member 30 with a fixing unit 36 fixed to both ends of the tension member 30 vertical pile contact with the excavated soil wall Prestress to (10) to greatly resist the side pressure of the earth wall One would be for.

이와 같은 본 발명의 한 실시예는 수직파일(10)의 양쪽 플랜지(34), (34')쪽에 지그재그형태로 고정된 브래키트(32)에 끼워진 긴장재(30)에 긴장력을 도입시킨 것이기 때문에 도 1에 표시한 바와 같이 수직파일(10)에서 브래키트(32)가 고정된 쪽으로는 압축력(C)이 작용하게 되고, 브래키트(32)와 마주보는 반대쪽에는 인장력(T)이 작용하게 된다.One embodiment of the present invention is because the tension force is introduced into the tension member 30 fitted in the bracket 32 fixed in a zigzag form on both flanges 34, 34 'side of the vertical pile (10). As shown in FIG. 1, the compression force C acts on the side where the bracket 32 is fixed in the vertical pile 10, and the tension force T acts on the opposite side facing the bracket 32.

즉, 측압에 의하여 수직파일은 횡가목과 횡가목의 중간부는 정모멘트, 횡가목의 위치는 부모멘트가 생기는데 브래키트(32) 위치를 정·부모멘트 위치에 고정함으로서 측압에 의하여 발생되는 모멘트와 반대로 프리스트레스모멘트가 작용되도록 함으로서 수직파일(10) 자체가 흙벽의 측압에 크게 저항하는 모멘트를 갖게되는 것이므로 횡가목의 상·하 설치간격도 크게 넓힐 수 있고 수직파일(10)을 지지해주는 보강용 횡가목(14)의 사용갯수를 크게 줄일 수 있게 된다.In other words, the vertical pile has a vertical moment in the vertical pile and a middle moment in the middle of the horizontal pile by the side pressure, and the position of the horizontal strand is generated by the parent moment. The opposite of the moment generated by the side pressure by fixing the position of the bracket 32 at the positive and secondary moment positions. Since the prestress moment acts, the vertical pile 10 itself has a moment that greatly resists the lateral pressure of the soil wall, so that the vertical and horizontal installation intervals of the horizontal tree can be greatly widened, and the horizontal wooden beam for reinforcing vertical pile 10 is supported. The number of uses of (14) can be greatly reduced.

따라서 터파기 작업을 보다 효율적으로 실시 할 수 있게 해준다.This makes the digging work more efficient.

그리고 수직파일(10)의 플랜지(34), (34')에는 도 2에 예시한 바와 같이 보강판(38), (38')을 덧붙여서 수직파일(10)의 단면 크기를 확대시켜 줌으로서 수직파일(10) 자체의 강도를 보강해 줄 수 도 있다.In addition, the flanges 34 and 34 'of the vertical pile 10 are added with reinforcing plates 38 and 38' as illustrated in FIG. It is also possible to reinforce the strength of the pile 10 itself.

도 4 ∼ 도 6에는 본 발명의 다른 실시예에 의한 가설 흙막이 공법이 표현되어 있다.4 to 6 represent a temporary soil block construction according to another embodiment of the present invention.

도 4 ∼ 도 6에 예시된 가설 흙막이 공법은 H-형강으로 된 수직파일(10)들을 세로방향으로 박아놓고, 터파기를 하면서 수직파일(10)들 사이에 토류판(12)을 끼워 넣으며, 보강용 횡가목(14)들을 수직파일(10)들의 앞쪽에 고정되는 받침대(16)에 가로 방향으로 설치하고, 버팀목(18)들로 상기 보강용 횡가목(14)들을 지지시켜 주는 가설 흙막이 공법에 있어서, 강봉이나 강연선등과 같은 긴장재(30)가 끼워지는 한조씩의 브래키트(32a), (32b)를 수직파일(10)들의 한쪽 플랜지(34)의 내측과, 다른 쪽 플랜지(34')의 외측에 수직파일(10)들의 길이방향을 따라서 교호로 고정시키고, 브래키트(32a)와 브래키트(32b)에 끼워진 긴장재(30)들을 인장시켜 긴장력을 도입시킨 후 통상의 정착구(36)로 긴장재(30)에 도입된 긴장력을 유지시켜 주어서 굴착된 흙벽과 접하는 수직파일(10)들의 뒷쪽으로 흙벽의 측압에 크게 저항하는 프리스트레스가 작용되도록 한 것이다.4 to 6 is installed in the vertical pile 10 of the H-shaped steel in the vertical direction, while inserting the earth plate 12 between the vertical piles 10 while dig, for reinforcement In the temporary soil construction method that the horizontal trees 14 are installed in the transverse direction on the pedestal 16 fixed to the front of the vertical piles 10, and the support bars 18 support the reinforcing horizontal trees 14 in the horizontal direction. , A pair of brackets 32a, 32b into which the tension member 30, such as a steel bar or a stranded wire, is fitted, into the inner side of one flange 34 of the vertical piles 10 and the other flange 34 '. Fixing alternately along the longitudinal direction of the vertical piles 10 on the outside, by tensioning the tension members 30 fitted to the brackets 32a and 32b and introducing tension force into the usual anchorage 36. Of the vertical piles (10) in contact with the excavated soil wall by maintaining the tension introduced in the (30) Up to a large resistance so that the prestressing action of the side pressure of the earthen.

도 4에서 2점쇄선으로 표현한 것은 압축력에 크게 저항 할 수 있는 고임목(40)을 상기 인장된 긴장재(30)와, 상기 플랜지(34') 사이에 끼워 넣어서 편심량을 크게 하여 긴장재(30)를 인장시켜 줌으로서 수직파일(10)에 보다 큰 프리스트레스가 작용되도록 하기 위한 것이다.In FIG. 4, the double-dotted line is inserted between the tensioned tension member 30 and the flange 34 ′ by inserting the solid wood 40 capable of largely resisting the compressive force to increase the amount of eccentricity to tension the tension member 30. This is to allow greater prestress to be applied to the vertical pile 10.

플랜지 내측과 외측에 도입되는 긴장력은 수직파일 전구간에 걸쳐 필요한 경우에만 설치한다.Tension forces introduced inside and outside the flange are to be installed only where necessary throughout the vertical pile span.

예를 들어 수직파일 하단부에 플랜지 외측부 몇 개만 긴장력을 도입하거나 부모멘트가 특별히 큰 위치에서 플랜지 내측에 긴장력을 도입시킨다.For example, only a few flanges on the lower end of the vertical pile introduce tension or inside the flange at a particularly large position.

이와 같은 본 발명에 의한 가설 흙막이 공법은 도 1과 도 4에 예시한 바와 같이 지하 매층마다 버팀목(18)을 1개 정도 설치하더라도 구조적으로 안전하므로 지하구조물(20)을 시공할 때에 맨 아래쪽 버팀목(18) 하부의 벽체(21)와 슬래브(22)를 시공한 후 벽체(21)와 흙막이 사이의 공간을 되메우기하면 상기 슬래브(22)가 그 위에 있는 버팀목(18)의 역활을 하므로 슬래브(22) 바로 윗쪽의 버팀목(18)은 철거 할 수 있게 된다.As shown in Figs. 1 and 4, the temporary construction method according to the present invention is structurally safe even if one support 18 is installed for each underground floor, so the bottom support is constructed when the underground structure 20 is constructed. 18) After constructing the lower wall 21 and the slab 22 to fill the space between the wall 21 and the retaining wall, the slab 22 plays the role of the shoring (18) thereon slab 22 The crutch 18 just above can be demolished.

즉, 벽체(21)와 슬래브(22) 시공, 되메우기, 버팀목 철거작업을 순차적으로 반복하면서 지하구조물(20)을 시공 할 수 있게 된다.That is, while the construction of the wall 21 and the slab 22, the backfill, the crutch demolition work iteratively it is possible to construct the underground structure 20.

따라서 본 발명은 벽체(21)에 버팀목(18)이 관통하지 않으므로서 구조적 강도와 방수성이 매우 우수한 지하구조물(20)을 시공 할 수 있도록 해준다.Therefore, the present invention allows the construction of the underground structure 20, which is very excellent in structural strength and waterproofness, because the strut 18 does not penetrate the wall 21.

본 발명은 수직파일을 지지해주는 보강용 횡가목과 버팀목의 사용 갯수를 종래에 비하여 크게 감소시켜 줄 수 있어서 가설 흙막이를 저렴한 비용으로 안전하게 시공할 수 있고, 버팀목의 간섭을 줄여주어서 터파기 작업을 효율적으로 실시 할 수 있도록 해주며, 버팀목의 간섭을 배제시키면서 지하구조물을 용이하게 시공할 수 있고, 버팀목이 지하층의 벽체를 관통했었던 종래의 지하구조물에 비하여 구조적 강도와 방수성이 매우 우수한 지하 구조물을 시공 할 수 있도록 해 줄 수 있는 등의 장점이 있다.The present invention can significantly reduce the number of use of the reinforcing lateral and support shoring to support the vertical pile, compared to the prior art can be safely installed at a low cost, and to reduce the interference of the shoring efficiently the digging work efficiently It can be carried out and the underground structure can be easily constructed without the interference of the crutch, and the underground structure with excellent structural strength and waterproofness can be constructed compared to the conventional underground structure where the crutch penetrated the walls of the basement layer. There are advantages such as being able to help.

Claims (4)

수직파일(10)들을 세로방향으로 박아놓고 터파기를 하면서 수직파일(10)들 사이에 토류판(12)을 끼워 넣으며 보강용 횡가목(14)들을 수직파일(10)들의 앞쪽에 가로방향으로 설치하고 버팀목(18)들로 상기 보강용 횡가목(14)들을 지지시켜 주는 가설 흙막이 공법에 있어서, 수직파일(10)들의 앞쪽에 길이방향으로 브래키트(32)를 설치하고, 브래키트(32)에 끼워진 긴장재(30)를 인장시켜 긴장력을 도입함으로서 흙벽과 접하는 수직파일(10)들의 뒷쪽으로 흙벽의 측압에 저항하는 프리스트레스가 작용되도록 함을 특징으로 하는 가설 흙막이 공법.The vertical piles 10 are inserted in the vertical direction, and the earth plate 12 is sandwiched between the vertical piles 10 while the trench is installed, and the reinforcing transverse trees 14 are installed in the horizontal direction in front of the vertical piles 10. In the temporary block construction method for supporting the reinforcing lateral trees 14 with the supporting members 18, the bracket 32 is installed in the longitudinal direction in front of the vertical piles 10, and the bracket 32 Temporary earthquake construction method characterized in that the prestress to resist the side pressure of the earth wall is applied to the back of the vertical pile (10) in contact with the earth wall by tensioning the tension member 30 is inserted. 제 1 항에 있어서, 브래키트(32)를 수직파일(10)들의 양쪽 플랜지(34), (34') 내측에 지그재그 형태로 배열하여 고정시키고, 브래키트(32)들에 지그재그 형태로 끼워진 긴장재(30)를 인장시켜 긴장력을 도입함을 특징으로 하는 가설 흙막이 공법.The tension member according to claim 1, wherein the bracket 32 is arranged and fixed in a zigzag shape inside both flanges 34 and 34 'of the vertical piles 10, and a tension member fitted in the brackets zigzag. Hypothesis construction method characterized in that the tension is introduced by pulling 30. 제 1 항에 있어서, 한조씩의 브래키트(32a)와 브래키트(32b)를 수직파일(10)들의 한쪽 플랜지(34)의 내측과, 다른 쪽 플랜지(34')의 외측에 수직파일(10)들의 길이방향으로 따라서 교호로 고정시키고, 브래키트(32a)와 브래키트(32b)에 끼워진 긴장재(30)들을 인장시켜 긴장력을 도입함을 특징으로 하는 가설 흙막이 공법.The vertical pile (10) according to claim 1, wherein the pair of brackets (32a) and the brackets (32b) are arranged on the inside of one flange (34) of the vertical piles (10) and the outside of the other flange (34 '). And alternately fixed along the lengthwise direction of the blades, and tensioning the tension members 30 fitted to the brackets 32a and 32b to introduce tension force. 제 3 항에 있어서, 긴장재(30)와 수직파일(10) 사이에 고임목(40)을 끼워 넣어서 인장된 긴장재(30)에 추가 긴장력을 도입함을 특징으로 하는 가설 흙막이 공법.4. The method of claim 3, wherein an additional tension force is introduced into the tensioned tension member (30) by sandwiching the stump wood (40) between the tension member (30) and the vertical pile (10).
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KR20040051182A (en) * 2002-12-12 2004-06-18 (주)피에스테크 Temporary soil sheathing using prestress and pile thereof
KR100808939B1 (en) * 2006-05-09 2008-03-03 (주)써포텍 wire-reinforced structure for underground pre-scaffolding system
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