KR100408132B1 - Method of construction for the lower part reinforcement of well open cassion in hard ground. - Google Patents
Method of construction for the lower part reinforcement of well open cassion in hard ground. Download PDFInfo
- Publication number
- KR100408132B1 KR100408132B1 KR10-2001-0047357A KR20010047357A KR100408132B1 KR 100408132 B1 KR100408132 B1 KR 100408132B1 KR 20010047357 A KR20010047357 A KR 20010047357A KR 100408132 B1 KR100408132 B1 KR 100408132B1
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- South Korea
- Prior art keywords
- caisson
- well
- well caisson
- concrete
- ground
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/04—Flat foundations in water or on quicksand
- E02D27/06—Floating caisson foundations
Abstract
본 발명은 경지반상에 정치되는 우물통 케이슨 하부의 보강을 위한 공법에 관한 것으로서, 우물통 케이슨(1) 외주면에 고착되어진 파이프(2)의 하단부에 자루(3)를 결속하여 콘크리트(4)를 타설하므로서 콘크리트(4)의 자중에 의해 자루(3)가 낙하하여 우물통 케이슨(1)의 하면에 형성된 공간부(12) 외측을 막고, 우물통 케이슨(1) 내부에는 콘크리트 타설관(10)의 하측에 자루(3a)를 덮어 씌워 공간부(12)까지 하강하여 콘크리트(4)를 타설하므로서. 낙하된 자루(3a)가 우물통케이슨(1)의 내측 공간부(12)를 정확하고 간편하게 막게 되므로 우물통 케이슨(1) 내부에 타설하는 콘크리트(4)의 유출이 없고, 우물통 케이슨(1) 외주벽을 감싸는 범포 스커트(6)의 위에 자갈등의 사석(9)을 쌓으므로서 우물통 케이슨(1)의 흔들림이 없도록 한 발명에 관한 것이다.The present invention relates to a method for reinforcing the lower part of the well caisson fixed on the ground plate, and binds the bag (3) to the lower end of the pipe (2) fixed to the outer circumferential surface of the well caisson (1) to bind the concrete (4) By pouring, the bag 3 falls due to the weight of the concrete 4 to block the outside of the space portion 12 formed on the lower surface of the well caisson 1, and the concrete pour pipe 10 inside the well caisson 1 Cover the bottom (3a) of the lower part of the space to the lower portion (12) by pouring concrete (4). Since the dropped bag 3a blocks the inner space 12 of the well caisson 1 accurately and easily, there is no outflow of the concrete 4 that is poured into the well caisson 1, and the well caisson 1 The present invention relates to an invention in which a well bucket caisson (1) is not shaken by stacking a stone (9) such as gravel on the canvas skirt (6) surrounding the outer circumferential wall.
Description
본 발명은 강, 하천등을 횡단하는 교량의 교각등의 기초구축을 위한 우물통(井筒:Well open caission) 설치 공법에 관한 것으로서, 특히 경지반상에 정치되는 우물통 케이슨의 하단부와 지반사이에 지반이 부분적으로 함몰되어 형성된 공간부를 콘크리트등으로 충전하기 위한 공법에 관한 발명이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a well open caission for foundation construction of bridges, such as bridges that cross rivers, rivers, and the like. The invention relates to a method for filling a space portion formed by partially recessed with concrete or the like.
일반적으로 교량 건설공사에 있어서, 우물통을 설치하여 교각의 기초등을 구축하고자 할 시에는 우물통 케이슨을 침수시켜, 그 내부의 토사등을 굴착 준설하여 경지반까지 침하시키게 되는데, 이 경지반에 올려진 우물통 케이슨의 하단부에는 평활하지 않은 지반의 요철형상으로 인해 지반하로 함몰된 공간부가 형성되는 경우가 많아, 우물통 케이슨 내부에 타설하는 콘크리트가 이 공간부를 통해 외부로 유출되므로, 콘크리트의 손실이 많아 이를 방지하기 위하여 종래에는 적당한 크기의 콘크리트를 장입한 포대를 만들어 우물통 케이슨 하부의 내, 외벽에 적치한 후 우물통 케이슨 내부에 교각의 기초등을 위한 콘크리트를 타설하였다.In general, in the construction of bridges, when a well is installed to build the foundation of a pier, the well caisson is flooded, and the excavated sediment, etc. are excavated and dredged to the cultivated land. The lower part of the raised well caisson is often formed with spaces recessed under the ground due to the uneven shape of the uneven ground, and the concrete placed inside the well caisson flows out through this space, so the loss of concrete In order to prevent this, conventionally, a bag made of concrete of appropriate size was made and placed on the inner and outer walls of the bottom of the well caisson, and then concrete was laid for the foundation of the pier inside the well caisson.
그러나 상기와 같이 콘크리트를 장입한 포대를 적치하여 경지반 위에 재치되어 있는 우물통 케이슨은 지반과 우물통 케이슨 하단부 사이에 형성된 공간부에 콘크리트 포대를 적치하였다고는 하나, 이 각각의 콘크리트 포대는 서로간의 결속력이 없어 우물통 케이슨의 정치상태가 불안정한 상태이고, 또한 상기의 공간부를 통해 우물통 케이슨 내부에 타설하는 콘크리트가 콘크리트 자중에 의하여 유출되기도한다.However, the well caisson mounted on the cultivation ground by loading the concrete loading bag as described above is said to have placed the concrete sack in the space formed between the ground and the bottom of the well caisson. Since there is no binding force, the stationary state of the well caisson is unstable, and concrete that is poured into the well caisson through the space portion may leak out by the weight of concrete.
도 1은 본 발명상으로 실시되는 우물통 케이슨이 설치되기 전의 일부 절결 사시도1 is a partially cutaway perspective view of the well caisson before the installation is carried out according to the present invention
도 2는 본 발명상으로 실시되는 우물통 케이슨을 수중에 침수시켜 내,외벽을 보강하는 상태를 나타내는 상태도Figure 2 is a state diagram showing a state of reinforcing the inner and outer walls by immersing the water well caisson carried out in the present invention in water
도 3은 본 발명상으로 실시되는 우물통 케이슨 내부에 콘크리트를 타설하는 상태를 나타내는 상태도Figure 3 is a state diagram showing a state in which concrete is poured into the well caisson carried out in accordance with the present invention
<도면의 주요부분에 대한 부호설명><Code Description of Main Parts of Drawing>
1. 우물통 케이슨 2. 파이프1. Well Cistern 2. Pipe
3,3a. 자루 4. 콘크리트3,3a. Sack 4. Concrete
5,5a. 결속수단 6. 범포 스커트5,5a. Binding means 6. Canvas skirt
6a. 케이슨 포삽공 7. 추6a. Caisson shovel
8. 지반 9. 사석8. Soil 9. Basin
10. 콘크리트 타설관 11. 포지10. Concrete pouring pipe 11. Forge
12. 공간부 13,13a. 로프12. Space 13,13a. rope
따라서 상기와 같은 문제점을 해소하고 안정적인 교각의 기초등을 구축하기 위한 본 발명상의 구성을 첨부한 도면에 의거하여 상술하면 다음과 같다.Accordingly, the present invention will be described in detail with reference to the accompanying drawings to solve the problems described above and construct a foundation of a stable pier.
우물통 케이슨(1)의 외주벽에 우물통 케이슨(1)의 높이보다 다소 짧은 길이와 소정의 직경을 가지는 파이프(2)를 밀착되게 다수개를 서로 이격된 위치에 세워서 고착하되, 그 각각의 파이프(2) 하단부에는 합성섬유등으로 되며 상측은 개봉되어 그 개봉부가 파이프(2)와 연설되게 하고, 하측은 폐쇄되어 있는 자루(3)를 콘크리트(4)를 타설후 우물통 케이슨(1) 상측에서 간단히 로프(13)를 당김만으로 파이프(2) 하단부에서 용이하게 이탈될 수 있도록 로프등의 결속수단(5)으로 느슨하게 결속하여 연설하며, 이러한 파이프(2)들이 외주벽에 입설고착된 우물통 케이슨(1)의 외주벽 하측 위치에 전체로서 원형으로 이루어져 중앙부에 우물통 케이슨(1) 외주벽을 포설할 수 있는 케이슨 포삽공(6a)이 천설되어 있는 합성섬유등으로 되는 범포 스커트(Skirt)(6)를, 우물통 케이슨(1)의 하부를 권포하도록 고정수단등으로 결속하며, 그 범포 스커트(6)의 바깥측 선단 다수곳에는 소정의 무게를 가지는 추(7)를 각각 연설하되, 우물통 케이슨(1)을 경지반에 재치작업시에는 상기의 범포 스커트(6)의 외곽선단을 우물통 케이슨(1)의 상측으로 올려 우물통 케이슨(1)의 상측을 임시로 포삽한 상태에서 침수시키고, 우물통 케이슨(1)이 지반(8) 위에 확실하게 위치 고정적으로 재치가 된 후에는, 범포 스커트(6)를 원추상으로 펼쳐 우물통 케이슨(1) 외측 지반(8)에 포설하고 추(7)의 자중에 의해 범포 스커트(6)의 위치가 설정이 되면, 이 범포 스커트(6) 상면에 모래, 자갈등의 사석(9)을 소정 높이로 성토하여 우물통 케이슨(1) 외부 지면의 보강이 마무리 되며. 참고로 도면상에는 도시하지 않았지만 상기의 우물통 케이슨(1) 외주벽 하단부에 다수개의 H빔을 우물통 케이슨(1) 중앙을 중심으로 원추형을 이루도록 방사상으로 고착하여, 우물통을 지반상에 재치시 견고히 고정될 수 있도록 한후 그 하측 공간부를 메우도록 콘크리트 자루(3)를 다수개 낙하한 후 범포 스커트(6)를 포설하여 그 상면에 사석(9)등을 성토하는 것도 바람직한 실시예이다.On the outer circumferential wall of the well caisson (1), a plurality of pipes (2) having a length slightly shorter than the height of the well caisson (1) and having a predetermined diameter are brought into close contact with each other, and are fixed. The lower end of the pipe (2) is made of synthetic fiber, and the upper side is opened so that the opening part is struck with the pipe (2), and the lower side is poured into the concrete (4) and then the well caisson (1). When the rope 13 is simply pulled from the upper side, it is loosely bound with a binding means 5 such as a rope so that it can be easily detached from the lower end of the pipe 2, and the pipe 2 is placed on the outer circumferential wall. Canvas skirt (Skirt) made of synthetic fiber, etc., which is circular in the lower position of the outer circumferential wall of the bucket caisson (1), and which has a caisson insertion hole (6a) which can install the outer circumferential wall of the well caisson (1) in the center part. (6), well Bind the lower part of the caisson (1) with a fixing means or the like, and the weight (7) having a predetermined weight to each of the outer leading end of the canvas skirt (6), respectively, but the well caisson (1) When mounting on the hard ground, the outer edge of the canvas skirt 6 is raised to the upper side of the well caisson (1) and submerged in the state where the upper side of the well caisson (1) is temporarily inserted. After 1) is securely placed on the ground 8 in a fixed position, the canvas skirt 6 is conically opened and placed in the well caisson 1 outer ground 8 to the weight of the weight 7. When the position of the canvas skirt 6 is set by this, sand or gravel 9, such as sand or gravel, is laid on the upper surface of the canvas skirt 6 to a predetermined height to finish reinforcement of the outer surface of the well caisson 1 outside. For reference, although not shown in the drawing, a plurality of H beams are radially fixed to the bottom of the outer wall of the well caisson 1 so as to form a cone about the center of the well caisson 1, and the well is placed on the ground. It is also a preferred embodiment to drop firmly the concrete bag (3) to fill the lower space and then to install the canvas skirt (6) to fill the sandstone (9) on the upper surface so as to be firmly fixed.
또한, 우물통 케이슨(1) 내부에는 당 출원인이 출원번호 20-2001-16154호로 출원한 "수중 교각 기초구축을 위한 콘크리트 타설관"에서 개시된 콘크리트 타설관의 미단에 구성되어 있는 포지(11) 외면에 상기와 같이 하단부가 밀폐되어 있는 합성섬유 등으로 되는 자루(3a)를 로프(13a)등의 결속수단(5a)으로 결속한 상태에서, 상기의 콘크리트 타설관(10)으로 콘크리트(4)를 타설하고, 상기의 로프(13a)를 간단히 당김만으로 자루(3a)속에 타설되는 콘크리트(4)의 토출압과 콘크리트(4)의 무게에 의해 자루(3a)는 콘크리트 타설관(10) 선단으로부터 탈리되어 우물통 내벽의 지반(8)위로 낙하하게 되고, 이렇게 다수개의 자루(3a)를 낙하시켜 적층되게 하므로서 우물통 케이슨(1) 하면의 지면에 형성되어 있는 공간부(12)를 메우게 되고, 따라서 우물통 케이슨(1) 내부에 타설하는 콘크리트(4)가 적층된 자루(12)들에 의하여 차단되어 우물통 케이슨(1)의 외부로 유출됨이 없이 우물통 케이슨에 의한 교각등의 기초공사가 마무리 된다.In addition, inside the well caisson (1), the outer surface of the forge (11) that is configured at the end of the concrete placing pipe disclosed in the "concrete placing pipe for the construction of underwater piers" filed by the applicant No. 20-2001-16154 In the state in which the bag 3a made of synthetic fiber or the like whose upper end is sealed as described above is bound by the binding means 5a such as the rope 13a, the concrete 4 is poured into the concrete placing pipe 10. The sack 3a is detached from the tip of the concrete pouring tube 10 due to the discharge pressure of the concrete 4 and the weight of the concrete 4 that are poured into the sack 3a by simply pulling the rope 13a. To fall on the ground 8 of the inner wall of the well, so that the plurality of bags 3a are dropped and stacked so that the space 12 formed in the ground of the lower surface of the well caisson 1 is filled. Therefore, pour into the well caisson (1) The concrete (4), such as foundation piers by the right bucket caisson to the outside without causing an outflow of the laminated bag is cut off by the 12 right bucket caisson (1) it is finished.
상기와 같이 본 발명상으로 실시되는 우물통 케이슨 하부의 보강을 위한 공법은 평활도가 일정하지 않은 형태의 지반(8) 위에 재치된 우물통 케이슨(1)의 외주벽을 범포 스커트(6)로 포삽하고, 그 범포 스커트(6) 상면에 자갈등의 사석(9)을 쌓아 이 사석(9)의 자중으로 범포 스커트(6) 상면을 착압하므로서, 우물통 케이슨(1)이 지반상에서 정확한 수직도를 유지할 수 있으며, 우물통 케이슨(1) 하단부에 형성된 공간부(12) 위치까지 콘크리트 타설관(10)을 하강하여 정확한 위치에 간편하게 콘크리트가 내부에 충전된 자루(3a)를 적층하여 공간부(12)를 메우므로서, 우물통 케이슨(1) 내부에 타설하는 콘크리트(4)의 유출이 없이 확실한 우물통 케이슨 공사를 할 수 있다.As described above, the method for reinforcing the lower part of the well caisson implemented according to the present invention inserts the outer circumferential wall of the well caisson 1 placed on the ground 8 having a non-uniform smoothness into the canvas skirt 6. Then, by stacking the four stones (9) such as gravel on the upper surface of the canvas skirt (6) and pressurizing the upper surface of the canvas skirt (6) with the weight of the sandstone (9), the well caisson (1) is the correct vertical degree on the ground It can be maintained, and the concrete pour pipe 10 is lowered to the position of the space portion 12 formed in the lower portion of the well caisson (1) by simply stacking the bag (3a) filled with concrete in the correct position in the space portion (12) ), It is possible to make sure well caisson construction without the outflow of concrete (4) to be poured into the well caisson (1).
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KR10-2001-0047357A KR100408132B1 (en) | 2001-08-06 | 2001-08-06 | Method of construction for the lower part reinforcement of well open cassion in hard ground. |
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KR10-2001-0047357A KR100408132B1 (en) | 2001-08-06 | 2001-08-06 | Method of construction for the lower part reinforcement of well open cassion in hard ground. |
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KR100741469B1 (en) * | 2005-12-05 | 2007-07-23 | 주식회사 우지스건설 | well foundation water-proofing grouting apparatus and its well foundation construction method |
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JPS62248715A (en) * | 1986-04-21 | 1987-10-29 | Shimizu Constr Co Ltd | Installation work for caisson |
JPH0657724A (en) * | 1992-08-14 | 1994-03-01 | Toa Kogaku Kk | Subaqueous covering sheet of underwater structure and method of construction of laying thereof |
JP2000087330A (en) * | 1998-09-17 | 2000-03-28 | World Engineering Kk | Construction method for marine structure |
JP2000087361A (en) * | 1998-09-10 | 2000-03-28 | Hazama Gumi Ltd | Construction method of underground structure |
KR200229213Y1 (en) * | 2001-01-30 | 2001-07-19 | 주식회사 수성기술단 | Well box floor aquatic concrete |
KR200245394Y1 (en) * | 2001-05-31 | 2001-10-29 | 김건수 | A pipe for filling up concrete for fundamental construction of bent in under the water. |
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JPS62248715A (en) * | 1986-04-21 | 1987-10-29 | Shimizu Constr Co Ltd | Installation work for caisson |
JPH0657724A (en) * | 1992-08-14 | 1994-03-01 | Toa Kogaku Kk | Subaqueous covering sheet of underwater structure and method of construction of laying thereof |
JP2000087361A (en) * | 1998-09-10 | 2000-03-28 | Hazama Gumi Ltd | Construction method of underground structure |
JP2000087330A (en) * | 1998-09-17 | 2000-03-28 | World Engineering Kk | Construction method for marine structure |
KR200229213Y1 (en) * | 2001-01-30 | 2001-07-19 | 주식회사 수성기술단 | Well box floor aquatic concrete |
KR200245394Y1 (en) * | 2001-05-31 | 2001-10-29 | 김건수 | A pipe for filling up concrete for fundamental construction of bent in under the water. |
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