KR101109520B1 - Construction method of soil barrier using steel pipe pile - Google Patents

Construction method of soil barrier using steel pipe pile Download PDF

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KR101109520B1
KR101109520B1 KR1020100086593A KR20100086593A KR101109520B1 KR 101109520 B1 KR101109520 B1 KR 101109520B1 KR 1020100086593 A KR1020100086593 A KR 1020100086593A KR 20100086593 A KR20100086593 A KR 20100086593A KR 101109520 B1 KR101109520 B1 KR 101109520B1
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steel pipe
pipe pile
support
construction method
construction
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최해곤
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삼정건설 주식회사
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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
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2220/00—Temporary installations or constructions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0061—Production methods for working underwater
    • E02D2250/0069—Welding

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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)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

본 발명은 버팀보(15)와 토류판(18)을 이용한 현장의 흙막이 시공방법에 있어서: 케이싱(10) 항타를 이용하여 소요 깊이로 천공하는 제1단계; 상기 항타 천공부 내부에 다수의 강관파일(20)을 수용하는 제2단계; 상기 강관파일(20)의 내부에 충진재(30)를 채운 상태로 밀봉하고, 현장의 굴착을 수행하면서 지지대(40)를 부착하는 제3단계; 및 상기 강관파일(20)과 지지대(40)를 이용하여 버팀보(15)와 토류판(18)의 설치가 완료된 후에 충진재를 남긴 상태로 강관파일(20)을 제거하는 제4단계;를 포함하여 이루어지는 것을 특징으로 한다.
이에 따라, H-파일 대신에 강관파일을 사용하여 토압에 대한 지지강도를 증대함에 따라 버팀보의 수량을 축소하면서 전체적인 공기를 단축할 수 있는 효과가 있다.The present invention provides a construction method for the construction site using the braces (15) and the earth plate (18): the first step of drilling to the required depth by using the casing (10); A second step of accommodating a plurality of steel pipe piles 20 in the driving punch hole; A third step of sealing the filling material 30 inside the steel pipe pile 20 and attaching the support 40 while performing a site excavation; And a fourth step of removing the steel pipe pile 20 in a state in which a filling material is left after the installation of the braces 15 and the earth plate 18 by using the steel pipe pile 20 and the support 40 are completed. It is characterized by.
Accordingly, by using the steel pipe pile instead of the H- pile to increase the support strength for the earth pressure there is an effect that can reduce the overall air while reducing the number of braces.

Description

강관파일을 이용한 흙막이 시공방법{Method for constructing earth retaining wall using steel pipe}Method for constructing earth retaining wall using steel pipe}

본 발명은 강관파일을 이용한 흙막이 시공방법에 관한 것으로서, 보다 구체적으로는 H-파일 대신에 강관파일을 사용하여 토압에 대한 지지강도를 증대함에 따라 버팀보의 수량을 축소하면서 전체적인 공기를 단축할 수 있는 강관파일을 이용한 흙막이 시공방법에 관한 것이다.The present invention relates to a construction method using a steel pipe pile, and more specifically, by using a steel pipe pile instead of an H-file, it is possible to shorten the overall air while reducing the number of braces by increasing the support strength against earth pressure. The present invention relates to a soil barrier construction method using steel pipe piles.

흙막이 가설공법은 지하구조물을 만들기 위한 굴착에 있어서 주변의 토사나 지하수가 굴착지반 내에 침입하지 않도록 하기 위한 가설 구조물을 설치하는 작업을 의미한다. 종래에 이 가설 구조물은 공사완료 후 철거되는 점에서 그다지 주목받지 않았으나 근래에 공사가 복잡화되면서 전체 공사에 점하는 비중이 상대적으로 커짐에 따라 중요성이 대두되고 있다.In the excavation for the construction of underground structures, the temporary barrier construction means the installation of a temporary structure to prevent the surrounding soil or groundwater from entering the excavation ground. In the past, this temporary structure was not received much attention in that it was demolished after completion of the construction, but as the construction has become more complicated in recent years, the importance of occupying the entire construction is increasing.

통상적으로 흙막이 공법의 종류는 H-파일(Pile) 및 토류판 공법, 사면개착(Open Cut) 공법, C.I.P(Cast in Place) 공법, S.C.W(Soil Cement Wall) 공법 등이 있으며, 도심지의 공사에 있어서 공기가 짧아 경제적이며 시공이 비교적 간단한 H-파일 및 토류판 공법이 선호된다. 이는 H-파일(어미말뚝)을 일정한 간격으로 박고 굴착과 동시에 토류판을 사이에 끼워 흙막이벽을 설치하는 공법으로 특히 지하수위가 낮고 지하수량이 적은 지반에 적합하다. 더구나 최근 구조물의 대형화와 도심지의 시공을 고려한다면 흙막이 구조 자체의 안정성뿐만 아니라 인접지반 및 구조물에 미치는 영향도 최소화되어야 한다.In general, the earthquake method includes H-pile and earth plate methods, open cut method, CIP (Cast in Place) method, and SCW (Soil Cement Wall) method. H-pile and earth plate methods are preferred because they are short, economical and relatively simple to construct. It is a method to install H-pile (mother pile) at regular intervals, and excavate and install earthen wall with interposed earth plate. Especially, it is suitable for the ground with low groundwater level and low groundwater amount. In addition, considering the recent increase in size of structures and construction of urban areas, the effect of earthquake on adjacent ground and structure should be minimized as well as stability of structure itself.

그러나 H-파일의 경우 강축과 약축의 구분이 있어 약축 방향은 좌굴에 불리하며 비틀림에 대한 강성도 제한적이므로 공사현장의 심도가 증가할수록 많은 수의 버팀보를 필요로 하여 공기를 증가시키는 폐단이 있다.However, in the case of H-pile, there is a distinction between the axis and the weak axis, so the direction of the weak axis is disadvantageous for buckling and the rigidity against torsion is limited.

상기와 같은 종래의 문제점들을 개선하기 위한 본 발명의 목적은, H-파일 대신에 강관파일을 사용하여 토압에 대한 지지강도를 증대함에 따라 버팀보의 수량을 축소하면서 전체적인 공기를 단축할 수 있는 강관파일을 이용한 흙막이 시공방법을 제공하는 데 있다.An object of the present invention for improving the conventional problems as described above, by using a steel pipe pile instead of H-files to increase the support strength for earth pressure, the steel pipe pile that can shorten the overall air while reducing the number of braces To provide a construction method using the earth film.

상기 목적을 달성하기 위하여, 본 발명은 지하 건축물 공사에서 버팀보와 토류판을 이용한 현장의 흙막이 시공방법에 있어서: 케이싱 항타를 이용하여 소요 깊이로 천공하는 제1단계; 상기 항타 천공부 내부에 다수의 강관파일을 수용하는 제2단계; 상기 강관파일의 내부에 충진재를 채운 상태로 밀봉하고, 현장의 굴착을 수행하면서 지지대를 부착하는 제3단계; 및 상기 강관파일과 지지대를 이용하여 버팀보와 토류판을 설치하고, 지하 건축물 공사가 완료된 후에 토류판과 버팀보를 제거한 다음 충진재를 남긴 상태로 강관파일을 제거하는 제4단계;를 포함하여 이루어지고, 상기 제2단계의 강관파일(20)은 하단에 가용접된 마감판을 구비하며, 상기 제3단계의 충진는 모래를 사용하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a construction method of the construction site using the support and earth plate in the underground building construction: the first step of drilling to the required depth using the casing; A second step of accommodating a plurality of steel pipe piles in the driving hole drilling unit; A third step of sealing the filling material inside the steel pipe pile, and attaching a support while carrying out excavation of the site; And a fourth step of installing the bracing beam and the earth plate using the steel pipe pile and the support plate, removing the earth plate and the bracing plate after the construction of the underground building is completed, and then removing the steel pipe pile with the filling material left. The steel pipe pile 20 of the second stage has a finish plate welded to the bottom, and the filling of the third stage is characterized by using sand.

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또, 본 발명에 따르면 상기 제3단계에서 지지대는 앵글(Angle)을 사용하는 것을 특징으로 한다.In addition, according to the present invention is characterized in that the support in the third step uses an angle (Angle).

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이상과 같이 본 발명에 의하면, H-파일 대신에 강관파일을 사용하여 토압에 대한 지지강도를 증대함에 따라 버팀보의 수량을 축소하면서 전체적인 공기를 단축할 수 있는 효과가 있다.As described above, according to the present invention, by using a steel pipe pile instead of the H-file, the overall air can be shortened while reducing the number of props by increasing the support strength against earth pressure.

도 1 내지 도 3은 본 발명에 따른 시공방법을 순차적으로 나타내는 모식도
도 4는 본 발명에 따른 시공방법에 의하여 완성된 상태를 나타내는 모식도
도 5는 도 4의 파일을 평면에서 확대하여 나타내는 구성도1 to 3 is a schematic diagram sequentially showing a construction method according to the present invention
Figure 4 is a schematic diagram showing a state completed by the construction method according to the invention
FIG. 5 is a configuration diagram showing the file of FIG. 4 enlarged in a plane; FIG.

이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 버팀보(15)와 토류판(18)을 이용한 현장의 흙막이 시공방법에 관련된다. 도심지와 같은 비교적 복잡한 환경을 지닌 현장에서 20m 이상의 심도로 건축물을 시공하는 방법에 적절하게 적용된다. 버팀보(15)의 사용을 최소로 하면서도 토류판(18)에 의한 토압의 지탱에 무리가 없도록 한다.The present invention relates to a construction method of the site using the braces 15 and the earth plate 18. It is appropriately applied to the construction of buildings with a depth of 20m or more in a site with a relatively complicated environment such as a downtown area. While minimizing the use of the braces (15), there is no difficulty in supporting the earth pressure by the earth plate (18).

본 발명의 제1단계는 케이싱(10) 항타를 이용하여 소요 깊이로 천공한다. 천공을 위한 항타의 일예로 외측오거와 내측오거를 상호 역회전하며 지반을 천공하는 공법을 적용할 수 있다. 이 경우 외측오거에는 케이싱(10)을 내측오거에는 스크류(Screw)를 장착하여 2중 굴진함으로서 항타시 발생되는 소음과 진동을 최소화하는 방식으로 진행된다.The first step of the present invention is drilled to the required depth by using the casing (10) drive. As an example of the driving for drilling, a method of drilling the ground by rotating the outer auger and the inner auger together may be applied. In this case, the casing 10 is mounted on the outer auger and a screw is mounted on the inner auger, thereby minimizing the noise and vibration generated during the driving.

또, 본 발명의 제2단계는 상기 항타 천공부 내부에 다수의 강관파일(20)을 수용한다. 일정한 길이의 강관파일(20)을 용접으로 이음하면서 항타된 천공부에 삽입한다. 강관파일(20)은 H-파일에 비하여 강축/약축의 구분이 없고 좌굴과 비틀림에 대하여 유리하다.In addition, the second step of the present invention accommodates a plurality of steel pipe piles 20 in the driving punch hole. Steel pipe pile 20 of constant length is inserted into the punched hole while being welded. The steel pipe pile 20 has no distinction between the steel shaft / weak axis and the buckling and torsion compared to the H-pile.

이때, 상기 제2단계의 강관파일(20)은 하단에 가용접된 마감판(25)을 더 구비할 수도 있다. 마감판(25)은 강관파일(20)의 내부에 후술하는 충진재(30)를 채울 때 소실되지 않도록 하는 것으로 시공완료후 강관파일(20)을 제거할 때 분리되기 쉽도록 가용접 상태로 부착한다.At this time, the steel pipe pile 20 of the second step may further include a closing plate 25 welded to the bottom. The closing plate 25 is attached so as not to be lost when filling the filling material 30 to be described later in the steel pipe pile 20 to be detachable when the steel pipe pile 20 is removed after construction. .

또, 본 발명의 제3단계는 상기 강관파일(20)의 내부에 충진재(30)를 채운 상태로 밀봉하고, 현장의 굴착을 수행하면서 지지대(40)를 부착하는 공정을 수행한다. 천공부에 강관파일(20)의 삽입이 완료된 후 강관파일(20)의 내부에 충진재(30)를 채우고 상단을 용접하여 밀봉한다. 이어서 강관파일(20)이 둘러진 현장에 대한 굴착(터파기)을 일정 깊이 단위로 수행한다. 굴착의 깊이 단위는 대향하는 강관파일(20) 사이에 버팀보(15)를 설치하는 간격에 해당한다.In addition, the third step of the present invention performs a process of attaching the support 40 while sealing in the state filled with the filler 30 in the interior of the steel pipe pile 20, and performing the site excavation. After the insertion of the steel pipe pile 20 is completed in the perforation part, the filler 30 is filled in the inside of the steel pipe pile 20, and the upper end is welded and sealed. Subsequently, excavation (dig) of the site in which the steel pipe pile 20 is enclosed is performed in a predetermined depth unit. The depth unit of the excavation corresponds to the interval for installing the braces 15 between the opposite steel pipe piles 20.

이때, 상기 제3단계의 충진재(30)는 모래 또는 이와 동등한 입도를 지닌 쇄석을 사용하는 것이 좋다. 유기물을 비롯한 불순물을 함유하지 아니한 KSL5101 (표준제에 규정된 NO.8(25㎜))체에 100% 통과한 모래를 사용하는 것이 바람직하다. 그러나 원석을 크랏샤 등으로 파쇄하여 소정의 입도분포가 되도록 체가름을 한 쇄석을 사용할 수도 있고, 또는 모래에 단립도 쇄석, 크랏샤런, 입도조정 쇄석 등을 혼합하여 사용할 수도 있다.At this time, the filler 30 of the third step is preferably used sand or crushed stone having an equivalent particle size. It is preferable to use sand which has passed through 100% of KSL5101 (NO.8 (25 mm) specified in the standard) which contains no impurities including organic matter. However, the crushed stone may be used by crushing the stone with crusher or the like to obtain a predetermined particle size distribution, or may be used by mixing short grain crushed stone, crusher, grain sized crushed stone or the like with sand.

한편, 상기 제3단계에서 지지대(40)는 앵글(Angle)을 사용하는 것이 바람직하다. 지지대(40)는 토류판(18)을 지지하는 부분으로서 앵글을 사용하여 강관파일(20)의 외주면에 용접한다. 앵글은 등변형이든 부등변형이든 무방하지만 강관파일(20)보다 상당히 작은 치수로 하는 것이 설치에 유리하다.On the other hand, in the third step, the support 40 preferably uses an angle (Angle). The support 40 is welded to the outer circumferential surface of the steel pipe pile 20 using an angle as a portion for supporting the earth plate 18. The angle may be an iso strain or an inequality, but it is advantageous for the installation to be considerably smaller than the steel pipe pile 20.

도 4 및 도 5는 본 발명의 시공방법에 의하여 완성된 현장의 상태를 부분적으로 드러내어 나타낸다.4 and 5 partially reveal the state of the site completed by the construction method of the present invention.

또, 본 발명의 제4단계는 상기 강관파일(20)과 지지대(40)를 이용하여 버팀보(15)와 토류판(18)을 설치하고, 지하 건축물 공사가 완료된 후에 토류판(18)과 버팀보(15)를 제거한 다음 충진재를 남긴 상태로 강관파일(20)을 제거한다. 전술한 것처럼 일정 깊이 단위로 굴착하면서 버팀보(15)와 토류판(18)을 설치하는 과정을 반복한다. 전체 터파기가 이루어지고 지하 건축물 공사가 완료된 후에는 장비를 이용하여 버팀보(15), 토류판(18), 강관파일(20)을 빼내며, 이 과정에서 강관파일(20)의 마감판(25)이 충진재(30)의 중량에 의하여 자연스럽게 분리된다. 마감판(25)이 상측으로 이동하여 분리되면서 충진재(30)가 그대로 남아 천공부를 메우게 된다.In addition, the fourth step of the present invention, using the steel pipe pile 20 and the support 40 to install the support 15 and the earth plate 18, the earth plate 18 and the support (15) after the construction of the underground building is completed ) And then remove the steel pipe pile (20) in the state leaving the filler. As described above, the process of installing the braces 15 and the earth plate 18 while repeating at a predetermined depth unit is repeated. After the entire trench is made and the construction of the underground building is completed, the props (15), the earth plate (18), and the steel pipe piles (20) are removed using the equipment, and in this process, the finishing plate (25) of the steel pipe piles (20) Naturally separated by the weight of the filler (30). As the closing plate 25 is moved upward and separated, the filler 30 remains intact to fill the perforated part.

이때, 상기 제4단계의 버팀보(15)는 8~10m 간격으로 설치되는 것을 특징으로 한다. 종래의 H-파일을 사용하는 경우 대략 2m 간격으로 버팀보(15)를 설치해야 하므로 재료비와 함께 공수가 증대되는 단점이 있었다. 반면 본 발명의 시공방법에 의하면 버팀보(15)를 8~10m 간격, 토질에 따라서 최악의 경우에도 5m 간격으로 설치하는 것으로 충분하다.At this time, the braces 15 of the fourth step is characterized in that are installed at intervals of 8 ~ 10m. In the case of using the conventional H-pile, since the braces 15 need to be installed at intervals of approximately 2 m, there is a disadvantage in that the number of man-hours increases with material costs. On the other hand, according to the construction method of the present invention, it is sufficient to install the braces 15 at intervals of 5 to 10 m, even in the worst case depending on the soil quality.

본 발명은 기재된 실시예에 한정되는 것은 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 변형예 또는 수정예들은 본 발명의 특허청구범위에 속한다 해야 할 것이다.It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

10: 케이싱 15: 버팀보
18: 토류판 20: 강관파일
25: 마감판 30: 충진재
40: 지지대10: casing 15: brace
18: earth plate 20: steel pipe pile
25: finish plate 30: filler
40: support

Claims (5)

지하 건축물 공사에서 버팀보(15)와 토류판(18)을 이용한 현장의 흙막이 시공방법에 있어서:
케이싱(10) 항타를 이용하여 소요 깊이로 천공하는 제1단계;
상기 항타 천공부 내부에 다수의 강관파일(20)을 수용하는 제2단계;
상기 강관파일(20)의 내부에 충진재(30)를 채운 상태로 밀봉하고, 현장의 굴착을 수행하면서 지지대(40)를 부착하는 제3단계; 및
상기 강관파일(20)과 지지대(40)를 이용하여 버팀보(15)와 토류판(18)을 설치하고, 지하 건축물 공사가 완료된 후에 토류판(18)과 버팀보(15)를 제거한 다음 충진재를 남긴 상태로 강관파일(20)을 제거하는 제4단계;를 포함하여 이루어지고,
상기 제2단계의 강관파일(20)은 하단에 가용접된 마감판(25)을 구비하며,
상기 제3단계의 충진재(30)는 모래를 사용하는 것을 특징으로 하는 강관파일을 이용한 흙막이 시공방법.In the construction method of the site using the support (15) and earth plate (18) in the underground building construction:
A first step of drilling to a required depth by using the casing 10;
A second step of accommodating a plurality of steel pipe piles 20 in the driving punch hole;
A third step of sealing the filling material 30 inside the steel pipe pile 20 and attaching the support 40 while performing a site excavation; And
Using the steel pipe pile 20 and the support 40 to install the buttresses (15) and the earth plate (18), and after the construction of the underground building is completed, the earth plate (18) and the buttress (15) is removed and then left the filler A fourth step of removing the steel pipe pile 20;
The steel pipe pile 20 of the second step is provided with a closing plate 25 welded to the bottom,
Filling material of the third step (30) construction method using a steel pipe pile, characterized in that using sand. 삭제delete 삭제delete 제1항에 있어서,
상기 제3단계에서 지지대(40)는 앵글(Angle)을 사용하는 것을 특징으로 하는 강관파일을 이용한 흙막이 시공방법.The method of claim 1,
In the third step, the support 40 is an earth block construction method using a steel pipe pile, characterized in that using an angle (Angle). 삭제delete
KR1020100086593A 2010-09-03 2010-09-03 Construction method of soil barrier using steel pipe pile Expired - Fee Related KR101109520B1 (en)

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CN104314082A (en) * 2014-11-12 2015-01-28 云南建工集团有限公司 Deep function pit supporting structure in karst geology condition and construction method thereof
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KR20180137687A (en) 2017-06-19 2018-12-28 하영판 A method of constructing an underground wall structure using an earth retaining wall and an underground wall structure
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KR20230013454A (en) * 2021-07-19 2023-01-26 고천석 A method of open cut excavation tunnel using a messer plate
KR20230127961A (en) * 2021-07-19 2023-09-01 고천석 A method of open cut excavation tunnel using a messer plate
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