KR19990084043A - Construction Method of Earth Retaining Structures in Braced Excavations - Google Patents
Construction Method of Earth Retaining Structures in Braced Excavations Download PDFInfo
- Publication number
- KR19990084043A KR19990084043A KR1019990038221A KR19990038221A KR19990084043A KR 19990084043 A KR19990084043 A KR 19990084043A KR 1019990038221 A KR1019990038221 A KR 1019990038221A KR 19990038221 A KR19990038221 A KR 19990038221A KR 19990084043 A KR19990084043 A KR 19990084043A
- Authority
- KR
- South Korea
- Prior art keywords
- hydraulic ram
- brace
- jack
- detachable jack
- construction
- Prior art date
Links
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000009412 basement excavation Methods 0.000 title description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000004888 barrier function Effects 0.000 abstract 2
Classifications
-
- 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
Abstract
본 발명은 건축 및 토목 공사의 지하 구조물을 건설하기 위해 설치하는 버팀식 흙막이 구조물의 시공 방법에 관한 것으로, 유압램 착탈잭과 버팀대를 볼트로 체결하는 공정과, 유압램 착탈잭이 연결된 버팀대를 띠장 또는 버팀대에 볼트로 체결하는 공정과, 유압램 착탈잭의 몸체부에 유압램을 삽입하고, 유압펌프를 작동시켜 유압램 착탈잭의 나사축이 밀려나도록 하는 공정과, 나사축과 함께 밀려난 멈춤 너트를 유압램 착탈잭의 몸체부에 밀착되도록 회전시켜 주는 공정으로 이루어지는 것을 특징으로 한다. 따라서, 버팀대들간의 연결부 등에 존재하는 틈새들이 폐합되고, 흙막이벽이 배면방향으로 들어가게 되어 흙막이벽의 변위 및 주변 지반의 침하를 줄일 수 있게 되는 것이다.The present invention relates to a construction method of the prop retaining structure to install the underground structure of construction and civil works, the process of fastening the hydraulic ram detachable jack and the brace with bolts, the brace is connected to the hydraulic ram detachable jack Or bolting to the brace, inserting the hydraulic ram into the body of the hydraulic ram detachable jack, operating the hydraulic pump to push the screw shaft of the hydraulic ram detachable jack, and stopping the screw shaft together. Characterized in that the nut is made to rotate to close contact with the body portion of the hydraulic ram detachable jack. Therefore, the gaps existing in the joints between the braces are closed, and the barrier wall enters the rear direction, thereby reducing displacement of the barrier wall and settlement of the surrounding ground.
Description
본 발명은 건축 및 토목 공사의 지하 구조물을 건설하기 위해 설치하는 버팀식 흙막이 구조물의 시공 방법에 관한 것으로, 굴착에 따른 응력의 이완에 의해 흙막이벽이 굴착부 방향으로 과도한 변형이 발생하는 것을 방지하기 위하여 버팀대와 띠장 또는 버팀대와 버팀대의 사이에 유압램 착탈잭을 설치하고 유압램을 이용하여 버팀대에 작용할 축력을 미리 작용시켜 흙막이벽을 배면 방향으로 밀어주어 흙막이벽의 변위 및 주변 지반의 침하를 줄여 주고자 하는 시공 방법에 관한 것이다.The present invention relates to a method of constructing a brace structure for installing underground structures of construction and civil works, to prevent excessive deformation of the retaining wall in the direction of the excavation due to the relaxation of the stress caused by the excavation In order to reduce the displacement of the wall and the settlement of the surrounding ground It is about the construction method to give.
현재 일반적으로 이용되는 종래의 버팀식 흙막이 구조물의 시공 방법을 도 1를 참조하여 설명하면 다음과 같다.Referring now to the construction method of the conventional brace structure is generally used as follows with reference to FIG.
지반을 굴착하기 전에 먼저 흙막이벽(1)과 중간 말뚝(2)을 시공하고, 계획 위치까지 지반을 굴착하여 띠장(3)을 설치하고, 스크류잭(4)이 부착된 버팀대(5)와 띠장(3)을 연결한 다음, 인력에 의해 스크류잭(4)의 나사부를 돌려서 버팀대(5)와 흙막이벽(1)을 밀착시키는 방법이다.Before excavating the ground, construct the retaining wall (1) and the middle pile (2), excavate the ground to the planned position and install the band (3), and the support (5) and the band with the screw jack (4) After (3) is connected, the brace 5 and the retaining wall 1 are brought into close contact with each other by turning the screw portion of the screw jack 4 by an attractive force.
본 방법은 스크류잭(4)을 이용하여 버팀대(5)의 최종 치수를 조절하는 것은 가능하나, 스크류잭(4)의 나사부의 회전력으로는 버팀대(5)와 버팀대(5)의 연결부, 버팀대(5)와 띠장(3)의 연결부 등에 존재하는 틈새를 대부분 제거할 수 없고, 단지 버팀대(5)가 헐거워 흔들리지 않도록 하는 정도이다. 따라서 연결부에 틈새가 남게 되고 결국 측압이 작용하게 되면 그 틈새가 밀착되어 흙막이벽(1)에 과도한 변형이 발생하게 된다.In this method, it is possible to adjust the final dimensions of the brace 5 using the screw jack (4), but the rotational force of the screw portion of the screw jack (4), the connection portion of the brace (5) and the brace (5), brace ( 5) and gaps existing in the connection part of the strip 3 can not be removed, and only the brace 5 is loose so as not to shake. Therefore, a gap is left in the connection part, and when the side pressure is applied, the gap is in close contact and excessive deformation occurs in the retaining wall 1.
또한 띠장(3)과 버팀대(5) 사이에 스크류잭(4)을 설치하고 햄머로 스크류잭(4)의 나사부를 돌렸을 때 발생하는 회전력에 의해 버팀대(5)에 작용시킬 수 있는 축력의 크기는 3∼10톤 정도이며, 5톤 이상을 작용시키기는 힘들다. 일반적으로 스크류잭(4)은 띠장(3)과 버팀대(5)의 한쪽에만 설치되므로, 중간 말뚝(2)과 버팀대(5)들간의 마찰력에 의한 손실을 고려하면 스크류잭(4)의 회전력에 의해서 스크류잭(4)이 설치되지 않은 띠장(3)으로 전달되는 축력의 크기는 매우 작다고 할 수 있다. 따라서 스크류잭(4)으로는 흙막이벽(1)을 배면 방향으로 밀어주기도 힘들 뿐아니라 틈새들을 최소화하기에도 미흡함을 알 수 있다.In addition, the size of the axial force that can be applied to the prop (5) by the rotational force generated when the screw jack (4) is installed between the belt strip (3) and the support (5) and the screw jack of the screw jack (4) with a hammer It is about 3 to 10 tons and it is difficult to operate more than 5 tons. In general, the screw jack (4) is installed only on one side of the belt (3) and the brace (5), considering the loss due to the frictional force between the intermediate pile (2) and the brace (5) to the rotational force of the screw jack (4) By this means, the magnitude of the axial force transmitted to the strip 3 without the screw jack 4 is very small. Therefore, it can be seen that the screw jack (4) is not only difficult to push the retaining wall (1) in the rear direction, but also insufficient to minimize the gaps.
본 발명은 상기 제반 문제점을 감안하여 이를 해소하고자 발명한 것으로, 굴착에 따른 응력의 이완에 의해 흙막이벽이 굴착부 방향으로 과도한 변형이 발생하는 것을 방지하기 위하여 굴착에 의해 버팀대에 작용할 축력을 미리 작용시켜 버팀대들간의 연결부 등에 존재하는 틈새들을 폐합시켜주고, 흙막이벽을 배면방향으로 밀어주어 흙막이벽의 변위 및 주변 지반의 침하를 줄일 수 있는 버팀식 흙막이 구조물의 시공 방법을 제공함에 그 목적이 있다.The present invention has been invented to solve the above problems, in order to prevent the deformation of the earth wall in the direction of the excavation due to the relaxation of the stress caused by the excavation acts in advance the axial force to act on the brace by excavation The purpose of the present invention is to provide a construction method of the prop retaining structure to close the gaps existing in the joints between the props, and to reduce the displacement of the retaining wall and the settlement of the surrounding ground by pushing the retaining wall in the rear direction.
상기 목적을 달성하기 위한 본 발명의 특징은 건축 및 토목 공사의 지하 구조물을 구축하기 위한 버팀식 흙막이 구조물을 시공하는데 있어서, 유압램 착탈잭과 버팀대를 볼트로 체결하는 제 1 공정과, 유압램 착탈잭이 연결된 버팀대를 띠장 또는 버팀대에 볼트로 체결하는 제 2 공정과, 상기 제 2 공정을 완료한 후, 유압램 착탈잭의 몸체부에 유압램을 삽입하고, 유압펌프를 작동시켜 유압램 착탈잭의 나사축이 밀려나도록 하는 제 3 공정과, 상기 나사축과 함께 밀려난 멈춤 너트를 회전시켜 유압램 착탈잭의 몸체부에 밀착되도록 하는 제 4 공정으로 이루어지는 것에 의한다.Features of the present invention for achieving the above object is the first step of fastening the hydraulic ram detachment jack and the brace with bolts in the construction of the prop retaining structure for building underground structures of construction and civil works, and hydraulic ram detachment The second step of bolting the brace connected to the jack to the belt or brace with a bolt, and after completing the second step, the hydraulic ram is inserted into the body of the hydraulic ram detachable jack, the hydraulic pump is operated to operate the hydraulic ram detachable jack And a fourth step of causing the screw shaft to be pushed out, and a fourth step of rotating the stop nut pushed together with the screw shaft to be in close contact with the body portion of the hydraulic ram detachable jack.
도 1은 종래의 버팀식 흙막이 구조물의 시공 상태을 나타낸 단면도1 is a cross-sectional view showing a construction state of a conventional brace structure
도 2는 본 발명의 버팀식 흙막이 구조물의 시공 상태을 나타낸 단면도Figure 2 is a cross-sectional view showing the construction state of the brace soil structure of the present invention
도 3A에서 도 3D는 본 발명의 버팀식 흙막이 구조물의 시공 순서를 나타낸 단면도3A is a cross-sectional view showing the construction sequence of the brace structure of the present invention 3D
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 흙막이벽 3 : 띠장1: earth wall 3: strip
4 : 스크류잭 5 : 버팀대4 screw jack 5 brace
6 : 유압램 11 : 유압램 착탈잭6: hydraulic ram 11: hydraulic ram removable jack
이하 첨부된 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.
본 발명의 도 2는 버팀식 흙막이 구조물의 시공 상태를 나타낸 단면도이며, 도 3A에서 도 3D는 버팀식 흙막이 구조물의 시공 순서를 나타낸 단면도이다.Figure 2 of the present invention is a cross-sectional view showing the construction state of the brace soil structure, Figure 3A in Figure 3D is a sectional view showing the construction sequence of the brace soil structure.
본 발명은 도 2와 도 3에 도시된 바와 같이 건축 및 토목 공사의 지하 구조물을 건설하기 위한 버팀식 흙막이 구조물을 시공하는데 있어서, 몸체부(7)와 나사축(8) 그리고 멈춤 너트(9) 및 지지판(10)으로 구성된 유압램 착탈잭(11)과 버팀대(5)를 볼트로 체결한 후, 유압램 착탈잭(11)이 연결된 버팀대(5)를 띠장(3) 또는 버팀대(5)에 볼트로 체결한다(도 3A와 도 3B).In the present invention, in the construction of a retaining structure for the construction of underground structures for construction and civil works as shown in Figures 2 and 3, the body portion 7 and the screw shaft 8 and the stop nut (9) And bolt the hydraulic ram detachable jack 11 and the brace 5 composed of the support plate 10 with bolts, and then attach the brace 5 to which the hydraulic ram detachable jack 11 is connected to the belt 3 or brace 5. Tighten with bolts (Figures 3A and 3B).
그 다음 유압램 착탈잭(11)의 몸체부(7)에 유압램(6)을 삽입하고, 유압펌프(12)를 작동시켜 유압램 착탈잭(11)의 나사축(8)이 밀려나도록 하고, 나사축(8)과 함께 밀려난 멈춤 너트(9)를 유압램 착탈잭의 몸체부(7)에 밀착되도록 회전시켜 주는 방법으로 이루어진다(도 3C와 도 3D).Then, the hydraulic ram 6 is inserted into the body portion 7 of the hydraulic ram detachable jack 11, and the hydraulic pump 12 is operated so that the screw shaft 8 of the hydraulic ram detachable jack 11 is pushed out. , The stop nut (9) pushed together with the screw shaft (8) is made to rotate in close contact with the body portion 7 of the hydraulic ram detachable jack (Fig. 3C and 3D).
따라서 본 발명에서는 부재들간의 연결부 등에 존재하는 틈새들을 폐합시켜주고, 흙막이벽을 배면방향으로 밀어주게 되므로 흙막이벽의 변위 및 주변지반의 침하를 억제할 수 있다.Therefore, in the present invention, it is possible to close the gaps existing in the connecting portion between the members, and to push the retaining wall in the rear direction, it is possible to suppress the displacement of the retaining wall and settlement of the surrounding ground.
이상에서 상술한 바와같이 본 발명은, 굴착에 따른 응력의 이완에 의해 흙막이벽이 굴착부 방향으로 과도한 변형이 발생하는 것을 방지하기 위하여 굴착에 의해 버팀대에 작용할 축력을 미리 작용시켜 부재들간의 연결부 등에 존재하는 틈새들을 폐합시켜주고, 흙막이벽을 배면방향으로 밀어주어 흙막이벽의 변위 및 주변 지반의 침하를 줄여 주는 효과가 있다.As described above, the present invention, in order to prevent the strained wall from excessive deformation in the direction of the excavation due to the relaxation of the stress caused by the excavation, by acting in advance the axial force to act on the brace by the excavation in connection between the members By closing the existing gaps and pushing the retaining wall in the rear direction, there is an effect of reducing the displacement of the retaining wall and settlement of the surrounding ground.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990038221A KR19990084043A (en) | 1999-09-08 | 1999-09-08 | Construction Method of Earth Retaining Structures in Braced Excavations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990038221A KR19990084043A (en) | 1999-09-08 | 1999-09-08 | Construction Method of Earth Retaining Structures in Braced Excavations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19990084043A true KR19990084043A (en) | 1999-12-06 |
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ID=54765777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990038221A KR19990084043A (en) | 1999-09-08 | 1999-09-08 | Construction Method of Earth Retaining Structures in Braced Excavations |
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| KR (1) | KR19990084043A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100383268B1 (en) * | 2000-07-14 | 2003-05-12 | 조재형 | method for underground construction of building by using permanent structural member as strut for support retaining wall |
| KR100753021B1 (en) * | 2006-11-13 | 2007-08-30 | 주식회사 시티기술단 | The subterranean soil flow wall construction method which formed the institution thing installation space part using main girder compression reaction |
| KR101034260B1 (en) * | 2008-09-11 | 2011-05-12 | 한국지역난방기술 (주) | Temporary soil shearing system supported by long span prestress and wale and construction method therefor |
| CN115075260A (en) * | 2022-07-20 | 2022-09-20 | 中国二十二冶集团有限公司 | Supporting device for foundation pit supporting and using method |
| CN116657670A (en) * | 2023-07-27 | 2023-08-29 | 中铁第一勘察设计院集团有限公司 | Foundation pit side wall displacement control method and system |
-
1999
- 1999-09-08 KR KR1019990038221A patent/KR19990084043A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100383268B1 (en) * | 2000-07-14 | 2003-05-12 | 조재형 | method for underground construction of building by using permanent structural member as strut for support retaining wall |
| KR100753021B1 (en) * | 2006-11-13 | 2007-08-30 | 주식회사 시티기술단 | The subterranean soil flow wall construction method which formed the institution thing installation space part using main girder compression reaction |
| KR101034260B1 (en) * | 2008-09-11 | 2011-05-12 | 한국지역난방기술 (주) | Temporary soil shearing system supported by long span prestress and wale and construction method therefor |
| CN115075260A (en) * | 2022-07-20 | 2022-09-20 | 中国二十二冶集团有限公司 | Supporting device for foundation pit supporting and using method |
| CN116657670A (en) * | 2023-07-27 | 2023-08-29 | 中铁第一勘察设计院集团有限公司 | Foundation pit side wall displacement control method and system |
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