KR100914650B1 - 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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Publication number
KR100914650B1
KR100914650B1 KR1020090048477A KR20090048477A KR100914650B1 KR 100914650 B1 KR100914650 B1 KR 100914650B1 KR 1020090048477 A KR1020090048477 A KR 1020090048477A KR 20090048477 A KR20090048477 A KR 20090048477A KR 100914650 B1 KR100914650 B1 KR 100914650B1
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South Korea
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steel caisson
steel
pier
reinforcement
concrete
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KR1020090048477A
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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
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1685—Shapes cylindrical
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0001—Rubbers

Abstract

A well foundation method using steel caissons for pier reinforcement is provided to carry out the construction by pouring concrete, removing the form, and then pulling out the steel caisson, thereby preventing delamination of concrete after the reinforcement. A well foundation method using steel caissons for pier reinforcement is as follows. A barge(14) equipped with a cram shell is floated around a bridge post(10) and excavates the ground(16) using the cram shell to form a foundation(18). Gunny bags(20) are placed to certain height and width on the foundation. H beams are fixed to the foundation using anchor bolts. Sand gunny bags are placed around the H beams and underwater concrete is applied. Steel caissons(26) are fixed by bolts on the top of the H beams, and the water in the steel caissons is evacuated using a pump. A plurality of holes of same diameter and depth are punched in the pier. Anchors are installed in the holes and reinforcing bars are placed on the anchors. A form is set up between the pier and the steel caissons, and concrete(38) is applied in the form. The form is removed and the steel caissons are pulled out.

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 시공후 유수의 흐름에 의하여 교각의 표면이 침식작용이 발생되며, 이러한 교각에 발생하는 침식작용은 교각의 강도를 낮출 뿐만 아니라 교각의 수명을 단축시키기 때문에 침식이 발생하는 즉시 보수 및 보강공사를 해야한다.In general, pier erosion occurs on the surface of the pier by the flow of running water after construction, and 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 교각과 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 of the existing piers and concrete.

이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위해 안출된 것으로서, 기존 교각 주위를 크램쉘로 터파기를 실시한 후, 마대를 적층하고, H빔을 앵커 볼트로 설치하고, H빔의 주위에 모래마대를 적층하고, 수중콘크리트를 타설한 후, H빔에 강재 케이슨을 볼트로 고정한 후, 상기 강재 케이슨의 내부의 물을 펌프로 배수하여 건조시킨 후, 기존 교각에 구멍을 천공하고, 앵커와 철근을 배근한 후, 거푸집을 설치하고, 콘크리트를 타설한 후, 거푸집을 탈형하고, 강재 케이슨을 인발하여 시공함으로써, 교각의 보강공사후에도 콘크리트의 접착 분리현상에 의한 재하자를 방지할 수 있도록 한 교각 보강용 강재 케이슨을 이용한 우물통 시공방법을 제공하는데 그 목적이 있다.Therefore, the present invention has been made to solve the problems described above, and after digging the pier around the existing piers with a clam shell, stacking the sack, installing the H beam with an anchor bolt, around the H beam After laminating sand mounds, placing underwater concrete, bolting steel caissons to H beams, draining the water inside the steel caissons with a pump, drying them, and then drilling holes in existing piers, anchors and After reinforcing the reinforcing bars, install the formwork, cast concrete, demolish the formwork, draw and construct the steel caisson, and make the pier to prevent the recurrence caused by the adhesive separation phenomenon after the reinforcement work of the pier. Its purpose is to provide a well construction method using reinforcing steel caisson.

상기한 목적을 달성하기 위한 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 기존 교각 주위를 크램쉘이 장착된 바지선을 띄운 상태에서 상기 바지선의 크램쉘로 일정깊이까지 지반을 굴착하여 터파기를 실시하는 단계; 상기 터파기 부분에 일정한 높이 및 폭으로 마대를 적층하는 단계; 상기 터파기 부분에 H빔을 앵커볼트로 고정 설치하고, 상기 H빔의 주위에 모래마대를 적층하고, 수중콘크리트를 타설하는 단계; 상기 H빔 상부에 강재 케이슨을 볼트로 고정 설치하는 단계; 상기 강재 케이슨의 내부의 물을 펌프로 배수하여 건조시키는 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 타설하는 단계; 상기 거푸집을 탈형하고, 강재 케이슨을 인발하는 단계로 이루어짐을 특징으로 한다.The well construction method using the steel caisson for pier reinforcement to achieve the above object is to excavate the ground by excavating the ground to a certain depth with the clam shell of the barge in the state of floating barge equipped with the clam shell around the existing piers step; Stacking the mounds at a constant height and width on the trench portions; Fixing the H beam with anchor bolts in the trench, stacking sandbags around the H beam, and placing underwater concrete; Fixing the steel caisson with bolts on the H beam; 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 placing concrete in the formwork; Demolding the formwork, characterized in that the step consisting of drawing a steel caisson.

이상에서 설명한 바와 같이, 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 기존 교각 주위를 크램쉘로 터파기를 실시한 후, 마대를 적층하고, H빔을 앵커볼트로 설치하고, H빔의 주위에 모래마대를 적층하고, 수중콘크리트를 타설한 후, H빔에 강재 케이슨을 볼트로 고정한 후, 상기 강재 케이슨의 내부의 물을 펌프로 배수하여 건조시킨 후, 기존 교각에 구멍을 천공하고, 앵커와 철근을 배근한 후, 거푸집을 설치하고, 콘크리트를 타설한 후, 거푸집을 탈형하고, 강재 케이슨을 인발하여 시공함으로써, 교각의 보강공사후에도 콘크리트의 접착 분리현상에 의한 재하자를 방지할 수 있는 장점이 있다.As described above, in the well construction method using the steel caisson for pier reinforcement according to the present invention, after digging the existing pier around the pier with a clam shell, stacking the rods, installing the H beam with anchor bolts, H beam After stacking sandbags and pouring underwater concrete, bolting the steel caisson to the H-beams, draining the water inside the steel caisson with a pump and drying, and then drilled holes in the existing piers After reinforcing anchors and reinforcing bars, install formwork, cast concrete, demolish formwork and draw and construct steel caissons to prevent ash defects caused by the adhesion and separation of concrete after reinforcement work. There is an advantage.

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 1h는 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법의 공정을 도시한 공정도이다.1a to 1h is a process chart 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) 주위를 크램쉘(12)이 장착된 바지선(14)을 띄운 상태에서 상기 바지선(14)의 크램쉘(12)로 일정깊이까지 지반(16)을 굴착하여 터파기(18)를 실시하는 단계; 상기 터파기(18) 부분에 일정한 높이 및 폭으로 마대(20)를 적층하는 단계; 상기 터파기(18) 부분에 H빔(44)을 앵커볼트(46)로 고정 설치하고, 상기 H빔(44)의 주위에 모래마대(48)를 적층하고, 수중콘크리트(24)를 타설하는 단계; 상기 H빔(44) 상부에 강재 케이슨(26)을 볼트(50)로 고정 설치하는 단계; 상기 강재 케이슨(26)의 내부의 물을 펌프(28)로 배수하여 건조시키는 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 타설하는 단계; 상기 거푸집(36)을 탈형하고, 강재 케이슨(26)을 인발하는 단계로 이루어진다.As shown in these drawings, the well construction method using a steel caisson for pier reinforcement in accordance with the present invention barge (barge 14) equipped with a clam shell 12 is mounted around the existing piers (10) Excavating the ground (16) to a predetermined depth with the cram shell (12) to perform the trench 18; Stacking the stem 20 to a portion of the trench 18 at a predetermined height and width; The H beam 44 is fixedly installed on the trench 18 with the anchor bolts 46, the sand spigot 48 is stacked around the H beams 44, and the underwater concrete 24 is poured. step; Fixing the steel caisson 26 on the H beam 44 with a bolt 50; 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 placing concrete (38) on the formwork (36); Demolding the formwork 36 and drawing the steel caisson 26.

즉, 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법은 터파기(18) 형성단계; 마대(20) 적층단계; 수중콘크리트(24) 타설단계; 강재 케이슨(26) 설치단계; 건조단계; 철근(34) 배근단계; 콘크리트(38) 타설단계; 강재 케이슨(26)을 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; Drying step; Reinforcing bars 34; Pouring concrete 38; Steel caisson (26) is to reinforce the well by performing the drawing step sequentially.

여기서, 상기 터파기(18) 단계는 기존 교각(10)의 주위를 크램쉘(12)이 장착된 바지선(14)을 띄운 상태에서 상기 바지선(14)의 크램쉘(12)로 일정깊이까지 지반(16)을 굴착하여 형성한다.Here, the trench 18 step is the ground to the predetermined depth to the clam shell 12 of the barge 14 in the state of floating the barge 14 with the clam shell 12 is mounted around the existing piers (10). (16) is excavated and formed.

상기 마대(20) 적층단계는 상기 터파기(18) 부분의 토사층의 무너짐을 방지하기 위하여 일정한 높이 및 폭으로 마대(20)를 적층한다. In the stacking step 20, the stack 20 is stacked at a predetermined height and width to prevent the soil layer of the trench 18 from falling down.

또한, 상기 마대(20)로 적층한 후, 터파기(18) 부분의 하상을 워터제트(52)로 정리한다.In addition, after lamination | stacking with the said stem 20, the lower image of the part of the trench 18 is arrange | positioned by the water jet 52.

상기 수중콘크리트(24) 타설단계는 마대(20)가 적층된 터파기(18) 부분에 H빔(44)을 앵커볼트(46)로 고정 설치하고, 상기 H빔(44)의 주위에 모래마대(48)를 적층하고, 상기 모래마대(48)의 내부에 수중콘크리트(24)를 타설한다.In the step of placing the underwater concrete 24, the H beam 44 is fixed to the anchor bolt 46 at the portion of the trench 18 in which the sack 20 is stacked, and the sand stalk is around the H beam 44. (48) is laminated, and the underwater concrete (24) is poured into the sandblast (48).

또한, 상기 H빔(44) 상부에 수밀용 고무패드(54)를 설치한다.In addition, a watertight rubber pad 54 is installed on the H beam 44.

상기 강재 케이슨(26) 설치단계는 상기 H빔(44) 상부에 설치된 수밀용 고무패드(54) 상에 강재 케이슨(26)을 볼트(50)로 고정 설치한다.The steel caisson 26 installation step is fixed to the steel caisson 26 with a bolt (50) on the water-tight rubber pad 54 installed on the H beam (44).

상기 건조단계는 강재 케이슨(26)의 내부의 물을 펌프(28)로 배수하여 건조시킨다.The drying step is to drain the water in the steel caisson 26 to the pump 28 to dry.

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 타설 및 양생한다.In the concrete 38 pouring step, the formwork 36 is installed between the existing piers 10 and the steel caisson 26, and the concrete 38 is poured into the formwork 36 and cured.

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.

또한, 상기 강재 케이슨(26)을 인발한 후, 터파기(18) 부분에 세굴방지공(42)을 시행한다.Further, after the steel caisson 26 is drawn out, the scrubbing holes 42 are applied to the trench 18.

도 1a 내지 1h는 본 발명에 따른 교각 보강용 강재 케이슨을 이용한 우물통 시공방법의 공정을 도시한 공정도.Figure 1a to 1h is a process diagram showing the process of the well construction method using a steel caisson for pier reinforcement 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

24: 수중콘크리트 26: 강재 케이슨24: underwater concrete 26: steel caisson

36: 거푸집 38: 콘크리트36: formwork 38: concrete

42: 세굴방지공 44: H빔42: scourer 44: H beam

46: 앵커볼트 48: 모래마대46: anchor bolt 48: sandblast

50: 볼트 54: 고무패드 50: bolt 54: rubber pad

Claims (4)

기존 교각(10)의 주위를 크램쉘(12)이 장착된 바지선(14)을 띄운 상태에서 상기 바지선(14)의 크램쉘(12)로 일정깊이까지 지반(16)을 굴착하여 터파기(18)를 실시하는 단계;Excavation of the ground 16 to a certain depth with the clam shell 12 of the barge 14 in the state of floating the barge 14 equipped with the clam shell 12 around the existing piers 10 Performing); 상기 터파기(18) 부분에 일정한 높이 및 폭으로 마대(20)를 적층하는 단계;Stacking the stem 20 to a portion of the trench 18 at a predetermined height and width; 상기 터파기(18) 부분에 H빔(44)을 앵커볼트(46)로 고정 설치하고, 상기 H빔(44)의 주위에 모래마대(48)를 적층하고, 수중콘크리트(24)를 타설하는 단계;The H beam 44 is fixedly installed on the trench 18 with the anchor bolts 46, the sand spigot 48 is stacked around the H beams 44, and the underwater concrete 24 is poured. step; 상기 H빔(44) 상부에 강재 케이슨(26)을 볼트(50)로 고정 설치하는 단계;Fixing the steel caisson 26 on the H beam 44 with a bolt 50; 상기 강재 케이슨(26)의 내부의 물을 펌프(28)로 배수하여 건조시키는 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 타설하는 단계;Installing a formwork (36) between the existing pier (10) and the steel caisson (26), and placing concrete (38) on the formwork (36); 상기 거푸집(36)을 탈형하고, 강재 케이슨(26)을 인발하는 단계로 이루어짐을 특징으로 하는 교각 보강용 강재 케이슨을 이용한 우물통 시공방법.Demoulding the formwork 36, and drawing the steel caisson 26, the well construction method using a steel caisson for pier reinforcement, characterized in that it consists of. 제 1항에 있어서,The method of claim 1, 상기 마대(20)로 적층한 후, 터파기(18) 부분의 하상을 워터제트(52)로 정리 하는 단계를 추가함을 특징으로 하는 교각 보강용 강재 케이슨을 이용한 우물통 시공방법.After stacking the said stem 20, the well construction method using a steel caisson for pier reinforcement, characterized in that the addition of the step of arranging the bottom of the trench 18 with a water jet (52). 제 1항에 있어서,The method of claim 1, 상기 H빔(44) 상부와 강재 케이슨(26)간에 수밀용 고무패드(54)를 설치함을 특징으로 하는 교각 보강용 강재 케이슨을 이용한 우물통 시공방법.Water well construction method using a steel caisson for piling reinforcement, characterized in that the water-tight rubber pad 54 is installed between the H beam 44 and the steel caisson (26). 제 1항에 있어서,The method of claim 1, 상기 강재 케이슨(26)을 인발한 후, 터파기(18) 부분에 세굴방지공(42)을 시행함을 특징으로 하는 교각 보강용 강재 케이슨을 이용한 우물통 시공방법.After drawing the steel caisson (26), the well construction method using a steel caisson for piling reinforcement, characterized in that the scour prevention hole (42) is performed in the trench 18.
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CN103924595A (en) * 2014-04-25 2014-07-16 安徽省高速公路控股集团有限公司 Self-float type inner formwork system for underwater pouring of hollow pipe column and application thereof
CN105625449A (en) * 2015-12-31 2016-06-01 中铁大桥勘测设计院集团有限公司 Connecting construction method for concrete open caisson and steel open caisson
KR101898449B1 (en) * 2018-07-27 2018-10-04 주식회사 에코해양건설 Prefabricated Steel Cofferdam with Dual Structure and Construction Method of Cofferdam Thereof
KR102252153B1 (en) * 2020-06-11 2021-05-14 에스오씨기술지주 주식회사 Underwater Geotextile Tube Construction Apparatus and Method
CN113529589A (en) * 2021-08-06 2021-10-22 交通运输部公路科学研究所 Plate splicing device applied to reinforcing of underwater bridge piers and reinforcing method thereof
CN114319150A (en) * 2021-12-13 2022-04-12 中交路桥建设有限公司 Method for repairing and reinforcing damaged bridge piers in mountainous area wading section

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Publication number Priority date Publication date Assignee Title
CN103924595A (en) * 2014-04-25 2014-07-16 安徽省高速公路控股集团有限公司 Self-float type inner formwork system for underwater pouring of hollow pipe column and application thereof
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KR102252153B1 (en) * 2020-06-11 2021-05-14 에스오씨기술지주 주식회사 Underwater Geotextile Tube Construction Apparatus and Method
CN113529589A (en) * 2021-08-06 2021-10-22 交通运输部公路科学研究所 Plate splicing device applied to reinforcing of underwater bridge piers and reinforcing method thereof
CN114319150A (en) * 2021-12-13 2022-04-12 中交路桥建设有限公司 Method for repairing and reinforcing damaged bridge piers in mountainous area wading section
CN114319150B (en) * 2021-12-13 2023-09-15 中交路桥建设有限公司 Restoration and reinforcement method for damaged bridge pier of river reach in mountain area

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