KR100961181B1 - The well foundation method for which a steel caisson for pier reinforcement was used - Google Patents

The well foundation method for which a steel caisson for pier reinforcement was used Download PDF

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KR100961181B1
KR100961181B1 KR1020090048476A KR20090048476A KR100961181B1 KR 100961181 B1 KR100961181 B1 KR 100961181B1 KR 1020090048476 A KR1020090048476 A KR 1020090048476A KR 20090048476 A KR20090048476 A KR 20090048476A KR 100961181 B1 KR100961181 B1 KR 100961181B1
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South Korea
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steel
formwork
caisson
pier
steel caisson
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KR1020090048476A
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Korean (ko)
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노윤근
전호건
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우경건설 주식회사
명보산공 주식회사
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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
    • E02D27/10—Deep foundations
    • E02D27/18—Foundations formed by making use of caissons
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0007—Production methods using a mold
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals
    • E02D2300/0029—Steel; Iron

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Bridges Or Land Bridges (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)

Abstract

PURPOSE: A well construction method using a steel material caisson for bridge post enforcement is provided to prevent concrete from being separated after the reinforcement construction of a bridge post. CONSTITUTION: A well construction method using a steel material caisson for bridge post enforcement comprises following steps. Excavation(18) is enabled by digging a ground(16) around a pier(10) with a clamshell. A steel mold for controlling a curved face is installed in the pier and underwater concrete is poured. A rubber seal is installed between the steel mold and the steel material caisson(26). In the pier, a plurality of holes are punched, an anchor is installed, and reinforcing bar is arranged. The mold is installed between the pier and the steel caisson, and the concrete(38) is poured.

Description

교각 보강용 강재 케이슨을 이용한 우물통 시공방법{The well foundation method for which a steel caisson for pier reinforcement was used}The well foundation method for which a steel caisson for pier reinforcement was used}

본 발명은 기존 교각 보강용 강재 케이슨을 이용한 우물통 시공방법에 관한 것이다.The present invention relates to a well construction method using a steel caisson for reinforcing bridge piers.

일반적으로 교각은 시공 후 유수의 흐름에 의하여 교각의 표면이 침식작용이 발생되며, 이러한 교각에 발생하는 침식작용은 교각의 강도를 낮출 뿐만 아니라 교각의 수명이 단축되기 때문에 침식이 발생하는 즉시 보수 및 보강공사를 해야한다.In general, the pier erosion occurs on the surface of the pier by the flow of running water after construction, the erosion occurs in the pier not only lowers the strength of the pier but also shortens the life of the pier, so as soon as erosion occurs Reinforcement work should be done.

기존에는 침식 발생시 교각의 표면에 철재 거푸집이나 수중콘크리트를 타설하였으나, 기존 교각의 콘크리트와의 접착 분리현상으로 인하여 다시 하자가 발생되는 문제점이 있다.Conventionally, when the erosion occurs, the steel formwork or concrete was placed on the surface of the piers, but there is a problem that the defect occurs again due to the adhesive separation phenomenon of the existing piers.

이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위해 안출된 것으로서, 교각의 침식부위를 크램쉘로 일정한 깊이로 터파기한 후, 터파기 부분에 마대를 적층한 후, 굴곡면 조정용 강재거푸집을 설치하고, 수중콘크리트를 타설하고, 굴곡면 조정용 강재거푸집에 강재 케이슨을 고정 설치한 후, 강재 케이슨의 내부의 물을 펌프로 배수하여 건조한 후, 기존 교각에 구멍을 천공하고, 앵커를 설치하며, 앵커에 철근을 배근한 후, 교각과 강재 케이슨과의 사이에 거푸집을 설치하고, 콘크리트를 타설한 후, 거푸집을 탈형하고, 강재 케이슨을 인발하여 시공함으로써, 교각의 보강공사 후에도 콘크리트의 접착 분리현상에 의한 재하자를 방지할 수 있도록 한 교각 보강용 강재 케이슨을 이용한 우물통 시공방법을 제공하는데 그 목적이 있다.Therefore, the present invention was devised to solve the problems described above, and after eroding the erosion portion of the piers to a certain depth with a clam shell, after stacking the stiffeners in the trench portion, the steel formwork for bending surface adjustment After installation, pour water concrete, fix the steel caisson to the steel formwork for bending surface adjustment, drain the water inside the steel caisson with a pump and dry it, then drill the hole in the existing piers, install the anchor, After reinforcing the reinforcing bar anchor, install the formwork between the pier and the steel caisson, cast concrete, demolish the form and draw and construct the steel caisson, so that the concrete can be separated even after reinforcement work. The purpose of the present invention is to provide a well construction method using a steel caisson for pier reinforcement to prevent re-accuracies.

상기한 목적을 달성하기 위한 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 기존 교각의 주위를 크램쉘이 장착된 바지선을 띄운 상태에서 상기 크램쉘로 일정깊이까지 지반을 굴착하여 터파기를 실시하는 단계; 상기 터파기 부분에 일정한 높이 및 폭으로 마대를 적층하여 지반붕괴를 방지하는 단계; 상기 기존 교각에 굴곡면 조정용 강재거푸집을 설치하고, 상기 굴곡면 조정용 강재거푸집에 수중콘크리트를 타설하는 단계; 상기 굴곡면 조정 강재거푸집과 강재 케이슨 사이에 고무시일을 밀실하게 고정 설치하는 단계; 상기 강재 케이슨의 내부의 물을 펌프로 배수하여 건조하는 단계; 상기 기존 교각에 일정한 직경 및 깊이로 다수개의 구멍을 천공하고, 상기 구멍에 앵커를 설치하며, 상기 앵커에 철근을 배근하는 단계; 상기 기존 교각과 강재 케이슨과의 사이에 거푸집을 설치하고, 상기 거푸집에 콘크리트를 타설하여 기존 교각의 단면을 증설하는 단계; 상기 거푸집을 탈형하고, 강재 케이슨을 인발하는 단계; 상기 강재 케이슨을 인발한 후, 터파기 부분에 세굴방지공을 시행함을 특징으로 한다.In the well construction method using a steel caisson for pier reinforcement to achieve the above object is the step of excavating the ground by excavating the ground to the predetermined depth with the clam shell in the state of floating barge equipped with the clam shell around the existing piers ; Stacking the rods at a predetermined height and width on the trench to prevent ground collapse; Installing steel formwork for bending surface adjustment to the existing piers and placing underwater concrete on the steel formwork for adjusting the bending surface; Securely installing a rubber seal between the curved surface control steel formwork and the steel caisson; Draining and drying the water in the steel caisson with a pump; Drilling a plurality of holes in a predetermined diameter and depth in the existing piers, installing anchors in the holes, and reinforcing bars in the anchors; Installing a formwork between the existing pier and the steel caisson, and adding concrete to the formwork to expand the cross section of the existing pier; Demoulding the formwork and drawing steel caissons; After drawing the steel caisson, characterized in that to carry out the scour prevention hole in the trench.

이상에서 설명한 바와 같이, 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 교각의 침식부위를 크램쉘로 일정한 깊이로 터파기한 후, 터파기 부분에 마대를 적층한 후, 굴곡면 조정용 강재거푸집을 설치하고, 수중콘크리트를 타설하고, 굴곡면 조정용 강재거푸집에 강재 케이슨을 고정 설치한 후, 강재 케이슨의 내부의 물을 펌프로 배수하여 건조한 후, 교각에 구멍을 천공하고, 앵커를 설치하며, 앵커에 철근을 배근한 후, 교각과 강재 케이슨과의 사이에 거푸집을 설치하고, 콘크리트를 타설한 후, 거푸집을 탈형하고, 강재 케이슨을 인발하여 시공함으로써, 교각의 보강공사 후에도 콘크리트의 접착 분리현상에 의한 재하자를 방지할 수 있는 장점이 있다.As described above, the well construction method using the steel caisson for pier reinforcement in accordance with the present invention after the erosion portion of the piers to dig a predetermined depth with a clam shell, after stacking the sack in the trench, for adjusting the curved surface After installing steel formwork, placing underwater concrete, fixing steel caisson to steel formwork for bending surface adjustment, draining water inside steel caisson with pump and drying, drilling holes in pier, and installing anchor After reinforcing the reinforcing bar to the anchor, install the formwork between the pier and the steel caisson, cast concrete, demolish the form and draw and construct the steel caisson to bond the concrete even after reinforcement of the pier. There is an advantage that can prevent the recurrence caused by separation phenomenon.

이하, 본 발명을 첨부한 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

도 1a 내지 1f는 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법의 공정을 도시한 공정도이다.1a to 1f is a process diagram showing the process of the well construction method using a steel caisson for pier reinforcement according to the present invention.

이들 도면에 도시된 바와 같이, 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 기존 교각(10)의 주위를 크램쉘(12)이 장착된 바지선(14)을 띄운 상태에서 상기 크램쉘(12)로 일정깊이까지 지반(16)을 굴착하여 터파기(18)를 실시하는 단계; 상기 터파기(18) 부분에 일정한 높이 및 폭으로 마대(20)를 적층하여 지반붕괴를 방지하는 단계; 상기 기존 교각(10)에 굴곡면 조정용 강재거푸집(22)을 설치하고, 상기 굴곡면 조정용 강재거푸집(22)에 수중콘크리트(24)를 타설하는 단계; 상기 굴곡면 조정용 강재거푸집(22)과 강재 케이슨(26) 사이에 고무시일(40)을 밀실하게 고정 설치하는 단계; 상기 강재 케이슨(26)의 내부의 물을 펌프(28)로 배수하여 건조하는 단계; 상기 기존 교각(10)에 일정한 직경 및 깊이로 다수개의 구멍(30)을 천공하고, 상기 구멍(30)에 앵커(32)를 설치하며, 상기 앵커(32)에 철근(34)을 배근하는 단계; 상기 기존 교각(10)과 강재 케이슨(26)과의 사이에 거푸집(36)을 설치하고, 상기 거푸집(36)에 콘크리트(38)를 타설하여 기존 교각(10)의 단면을 증설하는 단계; 상기 거푸집(36)을 탈형하고, 강재 케이슨(26)을 인발하는 단계; 상기 강재 케이슨(26)을 인발한 후, 터파기(18) 부분에 세굴방지공(42)을 시행하는 단계로 이루어진다.As shown in these drawings, the well construction method using a steel caisson for pier reinforcement according to the present invention in the state of floating the barge 14 equipped with the clam shell 12 around the existing piers 10 Digging the ground (16) to a predetermined depth with the shell (12) to carry out the trench (18); Stacking the stem 20 at a predetermined height and width on the trench 18 to prevent ground collapse; Installing the steel formwork for bending surface adjustment 22 in the existing piers 10 and placing the underwater concrete 24 in the formwork for adjusting the steel surface 22; Fixing the rubber seal 40 tightly between the steel formwork 22 and the steel caisson 26 for adjusting the curved surface; Draining and drying the water in the steel caisson (26) with a pump (28); Drilling a plurality of holes 30 to a predetermined diameter and depth in the existing piers 10, installing anchors 32 in the holes 30, and reinforcing bars 34 in the anchors 32. ; Installing a formwork (36) between the existing pier (10) and the steel caisson (26), and adding concrete (38) to the formwork (36) to extend the cross section of the existing pier (10); Demoulding the formwork 36 and drawing steel caisson 26; After drawing the steel caisson 26, it consists of the step of applying the scour prevention hole 42 in the trench 18.

즉, 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 터파기(18) 형성단계; 마대(20) 적층단계; 수중콘크리트(24) 타설단계; 강재 케이슨(26) 설치단계; 강재 케이슨(26) 내부 건조단계; 철근(34) 배근단계; 콘크리트(38) 타설단계; 강재 케이슨(26) 인발단계를 순차적으로 시행하여 우물통을 보강하는 것이다.That is, the well construction method using a steel caisson for pier reinforcement in accordance with the present invention is a trench 18 forming step; Stacking 20; Underwater concrete 24 pouring step; Steel caisson 26 installation step; Steel caisson 26 internal drying step; Reinforcing bars 34; Pouring concrete 38; Steel caisson (26) is to reinforce the well by drawing step sequentially.

여기서, 상기 터파기(18) 형성단계는 기존 교각(10)의 주위에 크램쉘(12)이 장착된 적정량의 톤수(1500P)로 된 바지선(14)을 띄운 상태에서 상기 크램쉘(12)로 일정한 깊이인 암층까지 지반(16)을 굴착한다.Here, the step of forming the trench 18 to the cram shell 12 in a state in which the barge 14 of the appropriate amount of tonnage 1500P with the cram shell 12 mounted around the pier 10 is floated. The ground 16 is excavated to a rock layer having a constant depth.

상기 마대(20) 적층단계는 터파기(18) 된 부분의 토사층의 무너짐을 방지하기 위하여 일정한 높이 및 폭으로 마대(20)를 적층한다. In the stacking step 20, the stacks 20 are stacked at a predetermined height and width in order to prevent the soil layer of the trench 18 from collapsing.

상기 수중콘크리트(24) 타설단계는 기존 교각(10)에 굴곡면 조정용 강재거푸집(22)을 설치하고, 상기 굴곡면 조정용 강재거푸집(22)에 수중콘크리트(24)를 타설한다.
이는 상기 굴곡면 조정용 강재거푸집(22)의 굴곡면 형상에 따라 수중콘크리트(24)를 매개로 굴곡면 조정용 강재거푸집(22)이 기존 교각(10)에 밀착 설치되도록 하기 위함이다. The step of placing the underwater concrete 24 installs the steel formwork 22 for adjusting the curved surface to the existing piers 10, and places the underwater concrete 24 to the steel formwork 22 for adjusting the curved surface.
This is to ensure that the curved surface adjustment steel formwork 22 is installed in close contact with the existing piers 10 through the underwater concrete 24 according to the curved surface shape of the steel formwork for adjustment of the curved surface.

상기 강재 케이슨(26) 설치단계는 굴곡면 조정용 강재거푸집(22)에 고무시일(40)을 고정 설치하고, 상기 고무시일(40)에 강재 케이슨(26)을 고정 설치한다.In the steel caisson 26 installation step, the rubber seal 40 is fixedly installed on the steel formwork 22 for adjusting the curved surface, and the steel caisson 26 is fixedly installed on the rubber seal 40.

상기 강재 케이슨(26) 내부 건조단계는 강재 케이슨(26)의 내부의 물을 펌프(28)로 배수하여 건조한다.In the drying step of the steel caisson 26, the water in the steel caisson 26 is drained and dried by the pump 28.

상기 철근(34) 배근단계는 기존 교각(10)에 일정한 직경 및 깊이로 다수개의 구멍(30)을 천공하고, 상기 구멍(30)에 앵커(32)를 설치하며, 상기 앵커(32)에 철근(34)을 배근한다.The reinforcement step 34 reinforces the plurality of holes 30 to a predetermined diameter and depth in the existing piers 10, install the anchor 32 in the hole 30, the reinforcement to the anchor 32 (34) to reinforce.

상기 콘크리트(38) 타설단계는 기존 교각(10)과 강재 케이슨(26)과의 사이에 거푸집(36)을 설치하고, 상기 거푸집(36)에 콘크리트(38)를 타설하여, 기존 교각(10)의 단면을 증설한다.In the concrete 38 pouring step, the formwork 36 is installed between the existing pier 10 and the steel caisson 26, and the concrete 38 is poured into the formwork 36, and the existing pier 10 is installed. Increase the cross section of.

상기 강재 케이슨(26) 인발단계는 거푸집(36)을 탈형하고, 강재 케이슨(26)을 인발한다.The steel caisson 26 drawing step demolds the formwork 36 and draws the steel caisson 26.

한편, 상기 강재 케이슨(26)을 인발한 후, 터파기(18) 부분에 자갈, 깬돌 등을 설치하여 세굴방지공(42)을 시행한다.On the other hand, after drawing out the steel caisson 26, to install the gravel, crushed stone, etc. in the trench 18 to perform the scour prevention hole (42).

도 1a 내지 1f는 본 발명에 따른 강재 케이슨을 이용한 우물통 시공방법의 공정을 도시한 공정도. 1a to 1f is a process diagram showing the process of the well construction method using a steel caisson according to the present invention.

-도면의 주요부분에 대한 부호의 설명-Explanation of symbols on the main parts of the drawing

10: 교각 12: 크램쉘10: Pier 12: Cramshell

14: 바지선 16: 지반14: barge 16: ground

18: 터파기 20: 마대18: Dig 20: Stable

22: 강재거푸집 24: 수중콘크리트22: steel formwork 24: underwater concrete

26: 강재 케이슨 28: 펌프26: steel caisson 28: pump

30: 구멍 32: 앵커30: hole 32: anchor

34: 철근 36: 거푸집34: Rebar 36: Formwork

38: 콘크리트 40: 고무시일38: concrete 40: rubber seal

42: 세굴방지공 42: scourer

Claims (3)

기존 교각(10)의 주위를 크램쉘(12)이 장착된 바지선(14)을 띄운 상태에서 상기 크램쉘(12)로 일정깊이까지 지반(16)을 굴착하여 터파기(18)를 실시하는 단계;Excavating the ground (16) to a predetermined depth with the clam shell (12) in the state of floating the barge (14) equipped with the clam shell (12) around the existing piers (10) to carry out the trench 18 ; 상기 터파기(18) 부분에 일정한 높이 및 폭으로 마대(20)를 적층하여 지반붕괴를 방지하는 단계;Stacking the stem 20 at a predetermined height and width on the trench 18 to prevent ground collapse; 상기 기존 교각(10)에 굴곡면 조정용 강재거푸집(22)을 설치하고, 상기 굴곡면 조정용 강재거푸집(22)에 수중콘크리트(24)를 타설하는 단계;Installing the steel formwork for bending surface adjustment 22 in the existing piers 10 and placing the underwater concrete 24 in the formwork for adjusting the steel surface 22; 상기 굴곡면 조정용 강재거푸집(22)과 강재 케이슨(26) 사이에 고무시일(40)을 밀실하게 고정 설치하는 단계;Fixing the rubber seal 40 tightly between the steel formwork 22 and the steel caisson 26 for adjusting the curved surface; 상기 강재 케이슨(26)의 내부의 물을 펌프(28)로 배수하여 건조하는 단계;Draining and drying the water in the steel caisson (26) with a pump (28); 상기 기존 교각(10)에 일정한 직경 및 깊이로 다수개의 구멍(30)을 천공하고, 상기 구멍(30)에 앵커(32)를 설치하며, 상기 앵커(32)에 철근(34)을 배근하는 단계;Drilling a plurality of holes 30 to a predetermined diameter and depth in the existing piers 10, installing anchors 32 in the holes 30, and reinforcing bars 34 in the anchors 32. ; 상기 기존 교각(10)과 강재 케이슨(26)과의 사이에 거푸집(36)을 설치하고, 상기 거푸집(36)에 콘크리트(38)를 타설하여 기존 교각(10)의 단면을 증설하는 단계;Installing a formwork (36) between the existing pier (10) and the steel caisson (26), and placing concrete (38) on the formwork (36) to enlarge the cross section of the existing pier (10); 상기 거푸집(36)을 탈형하고, 강재 케이슨(26)을 인발하는 단계;Demoulding the formwork 36 and drawing steel caisson 26; 상기 강재 케이슨(26)을 인발한 후, 터파기(18) 부분에 세굴방지공(42)을 시행함을 특징으로 하는 강재 케이슨을 이용한 우물통 시공방법.After drawing the steel caisson (26), the well construction method using a steel caisson, characterized in that the scour prevention hole (42) is performed in the trench 18. 삭제delete 삭제delete
KR1020090048476A 2009-06-02 2009-06-02 The well foundation method for which a steel caisson for pier reinforcement was used KR100961181B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108517788A (en) * 2018-03-09 2018-09-11 武汉二航路桥特种工程有限责任公司 A kind of pressure for structure increasing section, which fills, combines concrete construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108517788A (en) * 2018-03-09 2018-09-11 武汉二航路桥特种工程有限责任公司 A kind of pressure for structure increasing section, which fills, combines concrete construction method

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