KR0140738B1 - Repair method and structure of column with reinforcing rod concrete - Google Patents
Repair method and structure of column with reinforcing rod concrete Download PDFInfo
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- KR0140738B1 KR0140738B1 KR1019940009104A KR19940009104A KR0140738B1 KR 0140738 B1 KR0140738 B1 KR 0140738B1 KR 1019940009104 A KR1019940009104 A KR 1019940009104A KR 19940009104 A KR19940009104 A KR 19940009104A KR 0140738 B1 KR0140738 B1 KR 0140738B1
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- jacket
- mortar
- jackets
- damaged part
- inlet
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0034—Maintenance, repair or inspection of offshore constructions
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- 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
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- General Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
본 발명은 철근콘크리트지주의 보수방법과 이의 구조물에 관한 것으로, 지주(1)의 손상부위에 제1자켓(6)과 제2자켓(8)을 용접결합시키고서, 이들 자켓(6.8)내부로 콘크리트몰탈을 주입시킨 다음 자켓(6,8)의 하부에 방식용양극(1,2)을 설치한 구조물을 부착시켜줌으로써, 손상부의 지지강도를 향상시키면서 전기방식으로 인한 철근의 전식피해를 최소화시키도록 되어 손상부의 보수강도를 초기설계시의 강도까지 향상시킬 수 있도록 되어 있다.The present invention relates to a method for repairing reinforced concrete column and its structure, wherein the first jacket (6) and the second jacket (8) are welded to the damaged part of the support (1), and the inside of these jackets (6.8) By injecting concrete mortar and then attaching the structure with anticorrosive anodes (1, 2) on the lower part of the jacket (6, 8), it minimizes the damage of the reinforcement due to the electric method while improving the supporting strength of the damaged part The repair strength of the damaged part can be improved to the strength of the initial design.
Description
제1도는 본 발명에 사용되는 제1자켓과 제2자켓의 개략사시도.1 is a schematic perspective view of a first jacket and a second jacket used in the present invention.
제2도 (a)는 본 발명의 제1실시예에 따른 보수방법을 설명하기 위한 설치상태도.Figure 2 (a) is a state diagram for explaining the maintenance method according to the first embodiment of the present invention.
(b)는 발명의 제2실시예에 따른 보수방법을 설명하기 위한 단면도.(b) is sectional drawing for demonstrating the repair method which concerns on 2nd Example of this invention.
제3도 (a) (b)는 각각 종래 보수방법을 도시한 것으로, 제2도 (a) (b)의 대응도이다.3 (a) and 3 (b) show a conventional repair method, respectively, and are correspondence diagrams of FIG. 2 (a) and (b).
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 지주 2 : 파손부1: Shore 2: Damaged part
3,14 : 몸체 4,15 : 배출구3,14 body 4,15 outlet
5 : 몰탈층입부 6,17 : 제1자켓5: Mortar layer entrance 6,17: 1st jacket
7,16 : 몰탈투입구 8,18 : 제2자켓7,16: mortar entrance 8,18: second jacket
9 : 철근 10 : 연결선9: rebar 10: connecting line
11 : 고무가스켓 12 : 방식용양극11: rubber gasket 12: anticorrosive anode
13 : 해저면13: sea bottom
본 발명은 노후된 철근콘크리트지주를 보수하는 방법과 이의 구조물에 관한 것으로, 특히 수중작업시간을 최소화하여 작업성을 향상시키고 전기방식(電氣防蝕)으로 보수부 주변이 부식되는 것을 최소화시킴으로써 보수부의 강도가 상대적으로 저하되는 것을 방지시키도록 된 철근콘크리트지주의 보수방법과 이의 구조물에 관한 것이다.The present invention relates to a method for repairing old reinforced concrete column and its structure, in particular, to improve the workability by minimizing the underwater working time and to minimize the corrosion of the repair area around the electrical method (電氣 防蝕) by the strength of the repair part The present invention relates to a method of repairing reinforced concrete column and its structure to prevent relative degradation.
일반적으로 교량이나 항만시설에 설치되는 철근콘크리트지주는 일정시간이 경과되면 수중부에서 콘크리트의 열화와 염소이온, 충격 및 철근부식 등과 같은 복합적인 원인으로 국부적으로 손상되기 시작하는데, 특히 철근부식으로 인해 손상되는 경우에는 체적팽창으로 약 3,000psi 정도의 내압이 철근에서 발생되어 주변의 콘크리트에 작용되므로 고강도콘크리트로 이루어진 지주도 쉽게 균열이 발생되게 되며, 이러한 균열은 시간이 경과될수록 더욱 심해지게 되어 결국에는 철근주위의 콘크리트를 탈락시켜 파손에 이르게 된다.In general, reinforced concrete supports installed in bridges and port facilities start to be damaged locally due to complex causes such as deterioration of concrete, chlorine ions, impact and reinforcement in water, especially due to reinforcement corrosion. In case of damage, the internal pressure of about 3,000 psi is generated from the rebar and acts on the surrounding concrete due to volume expansion, so the pillars made of high-strength concrete are easily cracked, and these cracks become more severe as time passes. It breaks down the concrete around the rebar and leads to breakage.
따라서, 시공된 뒤 일정기간이 경과된 철근콘크리트지주는 적절한 방법으로 손상된 부위를 보수하여야 하는 바, 이러한 보수는 현재 제3도 a) b)에 각각 도시된 것과 같이 지주(30)의 파손부(31)를 긁어 내고 파손부주위에 거푸집(32)을 가설한 다음, 이 거푸집(32)속에 큰크리트몰탈(33)을 총입시켜 몰탈이 충분히 굳어 소요강도가 나오면 거푸집(32)을 탈형하여 줌으로써 손상부위를 원래의 모양으로 재생하는 방법을 이용하고 있다.Therefore, the reinforced concrete support after a certain period of time to be repaired to repair the damaged site in an appropriate way, such repair is currently broken in the struts 30 of the support (30) as shown in each of Figure 3 a) b) 31) Scrape the mold 32 around the damaged part, and then insert the large concrete mortar 33 into the mold 32, and when the mortar is sufficiently hardened and the required strength comes out, the mold 32 is demolished and the damaged part is removed. To recreate the original shape.
그러나 이와 같은 종래의 보수방법은 모든 작업이 수중에서 이루어지게 되므로 작업성이 저하되어 공기가 길어지고, 거푸집(32)을 지구(30)와 완전하게 밀착시켜 설치할 수 없어 몰탈(33)의 흘러내림을 방지할 수 없게 됨은 물론, 보수부의 철근과 기존철근간의 전위차이로 인해 보수부를 중심으로 지주의 상·하부 도는 내부의 설치된 철근이 전식(電蝕)현상으로 인해 짧은 시간에 부식되어 보수부주변의 기존 콘크리트가 심한 균열로 탈락되게 되므로, 보수초기에는 손상부위를 포함한 지주의 전체강도를 향상시킬 수는 있어도 장기적으로는 손상부위가 더욱 확대되는 원인이 되는 등의 여러문제가 있게 된다.However, such a conventional maintenance method is because all the work is done in water, workability is reduced, the air is long, the form 32 can not be installed in close contact with the earth 30, the mortar 33 flows down In addition, due to the potential difference between the reinforcing bar and the existing reinforcing bar, the reinforcing bar inside and around the repair part is corroded in a short time due to the phenomenon of electrical transfer. Existing concrete will fall off due to severe cracking, but in the early stage of repair, there are various problems such as the cause of further damage in the long term, even though it can improve the overall strength of the shore including the damaged part.
이에 본 발명은 상기와 같은 제반 문제점을 해결하기 위하여 발명된 것으로, 육상에서 제작된 보강자켓을 보수부주변에 용접결합시키고 이 자켓내로 수중용 콘크리트 몰탈을 충입시켜 몰탈과 자켓이 파손부위를 감싸주도록 하는 한편, 상기 자켓하부에 양극단자를 연결하여 전기방식을 유도함으로써, 기존 콘크리트와 보수용 콘크리트간의 전식피해를 예방하여 파손부위의 강도를 시공시의 강도까지 향상시킬 수 있고, 또 작업성을 향상시킴으로써 공기를 단축시킬 수 있도록 된 철근콘크리트지주의 보수방법과 이의 구조물을 제공함에 그 목적이 있다.Therefore, the present invention was invented to solve the above problems, welded reinforcement jacket manufactured on the land around the repair portion and filling the mortar and jacket to damage the mortar by filling the concrete mortar into the jacket. On the other hand, by inducing the electric method by connecting the anode terminal to the lower part of the jacket, it can prevent the damage of the existing concrete and the repairing concrete to improve the strength of the damaged site to the strength at construction, and also improve the workability The purpose of the present invention is to provide a method of repairing reinforced concrete column and its structure which can shorten the air.
상기와 같은 목적을 달성하기 위한 본 발명은, 파손부의 크기와 지주의 직경을 고려하여 철판등으로 반원형상을 이룬 제1자켓과 제2자켓을 형성시키는 자켓제작작업과 파손부에 노출된 철근을 자켓과 전기적접촉을 시키는 연결선설치작업, 파손부를 포함한 지주의 외주면에 제1자켓과 제2자켓을 상호 맞대고 제1,2자켓의 상하부에 각각 고무가스켓을 끼운상태에서 파손부주위를 감싸도록 자켓을 용접결합시키는 보강자켓고정작업, 제2자켓에 설치된 몰탈투입구를 통해 몰탈충입구에 콘크리트 몰탈을 채워주는 몰탈주입작업, 제1,2자켓에 각각 형성된 몰탈투입구와 배출구를 제거하고 구멍을 용접작업으로 메꾸어주는 밀봉작업 및, 상기 제1,2자켓의 하부에 방식용 양극을 설치하는 방식전극설치작업을 차례로 실시하여 파손부쥐위에 상기 제1,2자켓이 고정된 상태에서 이들 자켓내부에 몰탈이 충입되고, 자켓하부에 방식용전극이 장착된 구조물을 형성시키도록 되어 있다.The present invention for achieving the above object, the jacket manufacturing operation to form a first jacket and a second jacket formed in a semi-circular shape such as steel plate in consideration of the size of the damaged portion and the diameter of the struts and the rebar exposed to the damaged portion Installation work for connecting wires to make electrical contact with the jacket, the first jacket and the second jacket on the outer circumferential surface of the support including the damaged part, and the jacket to wrap around the damaged part with the rubber gaskets fitted to the upper and lower parts of the first and second jackets, respectively. Reinforcement jacket fixing work for welding, mortar injection work to fill mortar mortar through the mortar inlet installed in the second jacket, mortar inlet and outlet formed in the first and second jackets respectively, and the hole is welded The first and second jackets are placed on the damaged parts by sequentially performing a sealing operation and a method of installing anticorrosive electrodes to install anticorrosive anodes on the lower parts of the first and second jackets. The mortar inside these jackets in the specified state and chungip, is adapted to form the electrode system for the mounting structure on the lower jacket.
이하 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 따른 철근콘크리트지주보수용 자켓은 지주(1)에 발생된 파손부(2) 주변을 보강시키는데 사용되는 것으로, 제1도에 도시된 것과 같이 철판재를 반원형상으로 절골기시킨 몸체(3)의 길이방향을 따라 소정간격을 두고 다수의 배출구(4)가 분리가능하도록 설치된 몰탈충입부(5)를 소정두께로 돌출형성시킨 제1자켓(6)과, 상기 몸체(3)와 대칭되는 형상으로 이루어지면서 몰탈층입부(5)의 상부 소정위치에 원통형 몰탈투입구(7)가 끼워진 상태로 설치된 제2자켓(8)으로 분리형성되어, 지주(1)의 파손부(2)에 이들 제1,2자켓(6,8)을 서로 맞대어 용접작업 또는 보울트와 같은 체결수단을 매개로 장착시킴으로써 파손부(2) 주위를 감싸준 상태로 설치시키도록 구성되어 있다.Reinforced concrete holding jacket according to the present invention is to be used to reinforce the periphery of the damaged portion (2) generated in the strut (1), as shown in FIG. A first jacket 6 protruding the mortar filling part 5 provided at a predetermined thickness so that a plurality of outlets 4 are detachable at a predetermined interval along the longitudinal direction of 3), and symmetrical with the body 3 It is formed into a second jacket (8) installed in a state in which the cylindrical mortar inlet (7) is fitted in the upper predetermined position of the mortar layer inlet portion (5) is formed, these on the damaged portion (2) of the support (1) The first and second jackets 6 and 8 are configured to be installed in a state of being wrapped around the damaged part 2 by mounting a fastening means such as a welding operation or a bolt against each other.
다음에는 상기와 같이 구성된 제1,2자켓(6,8)을 매개로 파손부(2)를 보수하는 방법에 대해 설명한다.Next, a method of repairing the damaged part 2 through the first and second jackets 6 and 8 configured as described above will be described.
우선 철판 등을 지주(1)의 직경과 파손부위를 고려하여 적절한 크기로 절단하여 파손부(2) 주위를 완전히 덮어줄 수 있도록 제1자켓(6)과 제2자켓(8)을 분리시켜 제작하고나서, 지주(1)의 파손부(2)에 외부로 노출된 철근(9)을 매개로 연결선(10)을 다수개 용접부착시킨다.First of all, the first and second jackets 6 and 8 are separated from each other so that an iron plate or the like can be cut to an appropriate size in consideration of the diameter and the damaged part of the strut 1 to completely cover the periphery of the damaged part 2. After that, a plurality of connecting lines 10 are welded to each other by the reinforcing bar 9 exposed to the breakage portion 2 of the support 1 to the outside.
이어 상기 제1자켓(6)과 제2자켓(8)을 서로 맞대어 이들 자켓(6.8)의 상하부에 각각 고무가스켓(11)을 끼운상태로 용접작업 등으로 파손부(2) 주위를 감싸도록 지주(1)의 외주면에 장착시킨 다음, 상기 몰탈투입구(7)을 통해 소정압력을 부가하여 부식억제가 혼합된 몰탈을 주입시켜 자켓(6,8) 내부에 몰탈을 충입시킨다. 그리고 몰탈투입작업이 완료되면 몰탈투입구(7)와 배출구(4)를 몸체(3)로부터 떼어내고 이들을 끼우는데 사용된 설치구멍을 용접작업으로 밀봉시키고나서, 마지막으로 자켓(6,8)의 하부에 방식용양극(12)을 연결설치하게 되면 보수작업이 완료되어, 제2도 a)에 도시된 것과 같이 제1자켓(6)과 제2자켓(8) 및 이들 자켓(6,8)내에 충입된 몰탈이 파손부(2) 주위를 동시에 감싼 형태로 지지된 구조물이 형성되게 된다.Next, the first jacket 6 and the second jacket 8 are brought into contact with each other so that the rubber gaskets 11 are inserted in the upper and lower portions of the jackets 6.8, respectively, so as to surround the damaged part 2 by welding. After mounting on the outer circumferential surface of (1), by applying a predetermined pressure through the mortar inlet (7) to inject mortar mixed with corrosion inhibitor to fill the mortar into the jacket (6,8). After the mortar input operation is completed, the mortar inlet 7 and the outlet 4 are removed from the body 3 and the mounting holes used to insert them are sealed by welding, and finally, the lower part of the jacket 6 or 8 is finished. When the anticorrosive positive electrode 12 is connected, the repair work is completed. As shown in FIG. 2A, the first jacket 6 and the second jacket 8 and the jackets 6 and 8 are installed. Filled mortar is formed to support the structure at the same time wrapped around the damaged portion (2).
또한 본 발명에 따른 보수방법은 지주(1)와 해저면(13)이 접하는 부위에 발생된 손상부에도 적용시킬 수 있도록 되어 있는바, 즉 제2도 b)도에 도시된 것과 같은 파손부(2) 주변의 해저면(13)을 소정깊이로 굴삭한 다음 한쪽 선단부가 개구된 몸체(14)의 상부에 배출구(15)와 몰탈투입구(16)가 설치된 제1자켓(17)과 제2자켓(18)을 파손부(2)주위에 결합시키고, 상기 몰탈투입구(16)을 통해 몰탈을 충입시킨 다음 자켓(17,18)의 윗쪽에 방식용양극(12)을 설치하면 제2도 a)와 마찬가지로 몰탈과 자켓(17,18)이 파손부(2)를 감싸준 형태로 구조물이 형성되게 된다.In addition, the repair method according to the present invention is adapted to be applied to a damage portion generated at a portion where the support 1 and the bottom surface 13 contact each other, that is, a damage portion as shown in FIG. 2) Excavating the bottom surface 13 to a predetermined depth, and then the first jacket 17 and the second jacket provided with the outlet 15 and the mortar inlet 16 on the upper part of the body 14 having one end portion opened. (18) is coupled around the damaged part (2), the mortar is filled through the mortar inlet (16), and then the anticorrosive positive electrode 12 is installed on the jacket (17, 18) is a second figure a) Similarly, the mortar and the jackets 17 and 18 form a structure in which the damaged part 2 is wrapped.
한편, 상기 몰탈주입작업시 자켓(6,8)의 몸체(3)에 설치된 배출구(4)로 인해 자켓(6,8) 내·외부의 압력차이가 방지되게 되므로 몰탈충입부(5)내로 몰탈이 공극없이 채워지게 되고, 제1,2자켓(6,8)의 상·하부에 끼워지는 고무가스켓(11)으로 인해 몰탈주입작업시 몰탈이 외부로 누출되는 것을 방지할 수 있게 된다.On the other hand, the pressure difference between the inside and the outside of the jacket (6,8) is prevented by the discharge port (4) installed in the body (3) of the jacket (6,8) during the mortar injection operation mortar into the mortar filling portion (5) The gap is filled without voids, and the rubber gasket 11 fitted into the upper and lower portions of the first and second jackets 6 and 8 prevents the mortar from leaking to the outside during the mortar injection operation.
따라서 상기한 작업단계를 거치면서 보수된 파손부(2)는 제1,2자켓(6,8)을 매개로 감싸여진 상태에서 몰탈이 굳어짐에 따라 자켓(6,8)을 당기는 힘이 생겨 그 지지력이 보강되게 되고, 상기 제1,2자켓(6,8)의 하부에 설치된 방식용양극(12)으로 인해 기존큰크리트와 보수용 콘크리트간의 전위차이에 의한 철근의 전식피해를 최소화시킬 수 있음은 물론 이로 인해 수중부전체에 대한 부식을 방지시킬 수 있게 된다.Therefore, the damaged part 2 repaired through the above working steps has a force to pull the jacket (6,8) as the mortar is hardened in the state wrapped around the first and second jacket (6,8). The bearing capacity is reinforced, and the anticorrosion anode 12 installed under the first and second jackets 6 and 8 can minimize the damage of the rebar due to the potential difference between the existing large concrete and the repair concrete. Of course, this can prevent corrosion of the submerged whole.
이상 설명한 것과 같이 본 발명 철근콘크리트지주의 보수방법과 이의 구조물에 따르면, 보강자켓을 보수부주변에 용접결합시키고 이 자켓내로 몰탈을 충입시켜 몰탈과 자켓으로 형성된 구조물을 매개로 파손부위를 감싸준 상태에서 구조물의 하부에 방식용 전극을 설치하여 줌으로써, 보수부의 강도를 크게 향상시켜주면서 작업성을 향상시키는 효과가 있게 된다.As described above, according to the repair method of the reinforced concrete column of the present invention and a structure thereof, the reinforcing jacket is welded to the periphery of the repair part and the mortar is filled into the jacket to cover the damaged part through the structure formed by the mortar and the jacket. By installing the anticorrosive electrode on the lower part of the structure, the workability is improved while greatly improving the strength of the repair part.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940009104A KR0140738B1 (en) | 1994-04-28 | 1994-04-28 | Repair method and structure of column with reinforcing rod concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940009104A KR0140738B1 (en) | 1994-04-28 | 1994-04-28 | Repair method and structure of column with reinforcing rod concrete |
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| Publication Number | Publication Date |
|---|---|
| KR950029504A KR950029504A (en) | 1995-11-22 |
| KR0140738B1 true KR0140738B1 (en) | 1999-02-18 |
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| KR1019940009104A KR0140738B1 (en) | 1994-04-28 | 1994-04-28 | Repair method and structure of column with reinforcing rod concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010038534A (en) * | 1999-10-26 | 2001-05-15 | 장재근 | Process Of Repairing A Pier |
| KR100464616B1 (en) * | 2002-06-27 | 2005-01-03 | 이제현 | A repair method and structure of column with reinforcing rod concrete |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100233498B1 (en) * | 1996-12-23 | 1999-12-01 | 유정일 | Form for pier and peir repairing method using it |
| KR100394780B1 (en) * | 2001-02-07 | 2003-08-14 | 주식회사 준별에프알피산업 | A Repair ethod and Repair tructure of Bridge Pier Mould Construction |
| KR20020001672A (en) * | 2001-10-10 | 2002-01-09 | 신현관 | The method of “well foundation repair and reinforcement in the water” using ceramic coating material |
-
1994
- 1994-04-28 KR KR1019940009104A patent/KR0140738B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010038534A (en) * | 1999-10-26 | 2001-05-15 | 장재근 | Process Of Repairing A Pier |
| KR100464616B1 (en) * | 2002-06-27 | 2005-01-03 | 이제현 | A repair method and structure of column with reinforcing rod concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950029504A (en) | 1995-11-22 |
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