KR102519425B1 - Replacement Method of Bridge Bearing in Narrow Section of Bridge - Google Patents

Replacement Method of Bridge Bearing in Narrow Section of Bridge Download PDF

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KR102519425B1
KR102519425B1 KR1020220103938A KR20220103938A KR102519425B1 KR 102519425 B1 KR102519425 B1 KR 102519425B1 KR 1020220103938 A KR1020220103938 A KR 1020220103938A KR 20220103938 A KR20220103938 A KR 20220103938A KR 102519425 B1 KR102519425 B1 KR 102519425B1
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bridge
bridge deck
lifting device
deck
bearing
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KR1020220103938A
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Korean (ko)
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박형준
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한우코리아 주식회사
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/46Combinations of several jacks with means for interrelating lifting or lowering movements
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/04Bearings; Hinges

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The purpose of the present invention is to provide a method for replacing a bridge bearing in a narrow section of a bridge, which can install and replace a bridge bearing having various sizes in a place in which the gap between the top of a pier and a bridge deck is narrow or there is no gap therebetween. To achieve the above purpose, the method comprises the steps of: (S1) forming a drilled hole by drilling a coping surface into a predetermined size; (S2) installing a hydraulic lifting device in the drilled hole; (S3) operating the hydraulic lifting device to raise the bridge deck by a predetermined height; (S4) installing a bridge support in the drilled hole; (S5) lowering the bridge deck by removing the hydraulic force of the hydraulic lifting device against the raised bridge deck; (S6) vertically and horizontally arranging reinforcing bars in a lower portion of the bridge bearing; (S7) fixing an upper portion of the bridge bearing to the bottom of the bridge deck by anchor bolts; (S8) injecting epoxy between the bridge bearing and the bridge deck; and (S9) pouring non-shrink mortar on a lower portion of the bridge bearing.

Description

교량의 협소부 교량받침 교체공법{Replacement Method of Bridge Bearing in Narrow Section of Bridge}Replacement Method of Bridge Bearing in Narrow Section of Bridge}

본 발명은 교량의 협소부 교량받침 교체공법에 관한 것으로, 특히 교각 상부와 교량 상판 사이의 간격이 협소하거나 간격이 없는 곳에 다양한 크기의 교량받침을 설치 및 교체할 수 있도록 한 교량의 협소부 교량받침 교체공법에 관한 것이다.The present invention relates to a bridge bearing replacement method for narrow parts of bridges, and in particular, bridge bearings of various sizes can be installed and replaced where the gap between the upper part of the pier and the bridge deck is narrow or there is no gap. It's about replacement.

일반적으로 교량받침은 교각과 교량 상판 사이에 설치되어 교량 상판으로부터 전달되는 수직하중을 지지함과 동시에 이동 및 회전에 의한 수평력을 정적으로 흡수하여 교량의 내진 기능을 원활하게 하고, 계절의 온도변화, 바람, 지진 등의 충격에 따른 신축작용을 원활하게 지지하여 교량의 안전을 도모한다.In general, a bridge bearing is installed between the pier and the bridge deck to support the vertical load transmitted from the bridge deck and at the same time to statically absorb the horizontal force caused by movement and rotation to facilitate the seismic function of the bridge, seasonal temperature change, It promotes the safety of the bridge by smoothly supporting the expansion and contraction caused by impacts such as wind and earthquake.

이와 같이 시공되는 교량받침은 보강 철판과 탄성중합체가 교대로 보강되어 구성된 탄성받침과, 상기 탄성받침의 하면과 교각 사이에 배치되는 하부판과 탄성받침의 상면과 교량상판 사이에 배치되는 상부판으로 이루어진다.The bridge bearing constructed in this way consists of an elastic bearing composed of reinforcing steel plates and an elastomer alternately reinforced, a lower plate disposed between the lower surface of the elastic bearing and the pier, and an upper plate disposed between the upper surface of the elastic bearing and the bridge upper plate. .

이러한 교량받침은 그 구조 및 치수가 한국산업규격(KS)에서 규정하고 있는 것으로, 여러 형태가 개시되어 있다. The structure and dimensions of these bridge bearings are regulated by the Korean Industrial Standards (KS), and various forms are disclosed.

예를 들면, 상술한 바와 같이 탄성중합체 내부에 보강철판이 배치된 형태, 탄성중합체의 외측에 철판을 구비하고, 상기 철판과 상부판 또는 하부판과 나사 결합되는 형태 또는 상술한 형태를 혼합한 형태 등 다양한 형태가 개시되었다.For example, as described above, a reinforcing iron plate is disposed inside the elastomer, an iron plate is provided on the outside of the elastomer, and the iron plate is screwed to the upper or lower plate, or a combination of the above forms, etc. Various forms have been disclosed.

이와 같은 교량받침은 탄성 받침의 크기, 예를 들면 너비 × 길이 또는 지름에 따라(크기에 따라 지지해야 할 하중이 다름-크기가 클수록 큰 하중을 지지함.) 보강철판의 수와 고무층의 수가 결정된다. Such a bridge bearing is determined according to the size of the elastic bearing, for example, width × length or diameter (the load to be supported varies depending on the size-the larger the size, the larger the load is supported). The number of reinforcing steel plates and the number of rubber layers are determined. do.

즉, 탄성 받침의 크기에 따른 보강 철판과 고무층의 치수를 한국산업규격에서 규정하고 있는 것이다.That is, the dimensions of the reinforcing steel plate and rubber layer according to the size of the elastic bearing are specified in the Korean Industrial Standards.

예를 들면, 너비 300×길이 400인 탄성받침의 경우, 그 높이는 최소 57mm에서 최대 105mm이고, 탄성고무층은 최소높이는 36mm, 최대 72mm이며, 탄성고무층으로 된 내부고무층은 최소 3개이고, 그 두께는 12mm이어야 한다. For example, in the case of an elastic bearing with a width of 300 × length of 400, its height is at least 57 mm and at most 105 mm, the minimum height of the elastic rubber layer is 36 mm and the maximum is 72 mm, and the inner rubber layer made of elastic rubber layers is at least 3, and the thickness is 12 mm. should be

이때, 상기 내부고무층 사이에 배치되는 보강철판은 그 두께가 최소 4mm이어야 한다. At this time, the reinforcing steel plate disposed between the inner rubber layers should have a thickness of at least 4 mm.

따라서, 내부고무층이 3개가 형성되기 위해서는 2개의 보강철판이 배치되어야 하는 것이다.Therefore, in order to form three inner rubber layers, two reinforcing iron plates should be disposed.

이러한 구조를 갖는 종래기술에 의한 탄성받침을 첨부된 예시도면을 참조하여 상세히 설명한다.An elastic support according to the prior art having such a structure will be described in detail with reference to the accompanying drawings.

도 1a에 도시된 바와 같이 너비 300× 길이 400인 탄성받침(9)의 경우 받침(9)의 내부에는 4mm의 두께를 갖는 4개의 보강철판(2)이 배치되고, 각 보강철판(2) 사이에는 12mm의 두께를 갖는 고무층(3)이 형성되며, 받침(1)의 상면 또는 하면에는 교각과 교량상판에 각각 지지되는 상부판(4) 또는 하부판(5)이 배치된 구조이다. As shown in FIG. 1A, in the case of an elastic bearing 9 having a width of 300 × a length of 400, four reinforcing iron plates 2 having a thickness of 4 mm are disposed inside the bearing 9, and between each reinforcing iron plate 2 A rubber layer 3 having a thickness of 12 mm is formed in the structure, and an upper plate 4 or a lower plate 5 supported by piers and bridge decks is disposed on the upper or lower surface of the bearing 1.

이와 같은 구조의 탄성받침(9)은 상부판(4) 또는 하부판(5) 사이에 단순 배치되기 때문에 탄성받침(9)과 상부판(4) 또는 하부판(5)을 결합력을 높이기 위한 보강철판(2A)이 상부 또는 하부에 각각 배치되고, 상기 보강철판(2A)이 상부판(4)과 하부판(5)에 직접 접촉되어 마찰계수가 감소되는 것을 차단하기 위해서 보강철판(2A)을 감싸는 상부 또는 하부에 위치한 고무층(1A)이 구비된다.Since the elastic bearing 9 of this structure is simply disposed between the upper plate 4 or the lower plate 5, the elastic bearing 9 and the upper plate 4 or lower plate 5 are reinforced with reinforcing steel plates to increase the bonding force ( 2A) is disposed on the top or bottom, respectively, and the upper or lower portion surrounding the reinforcing steel plate 2A in order to prevent the reinforcing iron plate 2A from directly contacting the upper plate 4 and the lower plate 5 to reduce the friction coefficient. A rubber layer 1A located at the bottom is provided.

이러한 탄성받침(9)은 받침(1)과 상부판(4)과 하부판(5)이 결합수단을 갖지 않고, 단순 배치되어 교각과 교량상판 사이에 시공되었으나, 교각과 교량상판 사이의 간격이 협소한 곳에는 시공이 곤란하였다. In this elastic bearing (9), the bearing (1), the upper plate (4), and the lower plate (5) do not have a coupling means, and are simply arranged and constructed between the pier and the bridge deck, but the gap between the pier and the bridge deck is narrow Construction in one place was difficult.

즉, 상술한 바와 같은 구조의 탄성받침(9)의 최소높이는 다음과 같이 산출된다.That is, the minimum height of the elastic support 9 having the structure described above is calculated as follows.

고무층 두께 : 12mm × 3개 = 36mmRubber layer thickness: 12mm × 3 = 36mm

보강철판 두께 : 4mm × 4개 = 16mmReinforced steel plate thickness: 4mm × 4 = 16mm

상부와 하부 고무두께 : 2.5mm × 2개소 = 5mmUpper and lower rubber thickness: 2.5mm × 2 places = 5mm

합계 : 57mmTotal: 57mm

따라서, 상술한 종래기술에 따른 탄성받침(9)을 시공하기 위해서는 교각과 교량상판 사이의 간격이 최소 57mm 이상이어야 하는 것으로, 57mm 이하의 공간에는 시공될 수 없는 문제점이 있었다.Therefore, in order to construct the elastic bearing 9 according to the prior art, the distance between the pier and the bridge deck must be at least 57 mm, and there is a problem that it cannot be installed in a space of 57 mm or less.

한편, 1b에 도시된 바와 같이, 받침(1)과 상부판(4) 또는 하부판(5)을 일체화시키기 위해서 받침(1)의 상부면 또는 하부면에 적어도 20mm 이상의 상부철판 및 하부철판(7)을 각각 결합시키고, 상기 상부철판과 하부철판(7)을 상부판(4) 또는 하부판(5)과 볼트로 결합시키는 구조의 탄성받침(9)이 개시되었으나, 상기 탄성받침(9)은 받침(1)과 상부판(4) 또는 하부판(5)의 결합이 견고하였으나, 상기 탄성받침(9) 전체의 높이가 높아져 협소한 위치에 시공될 수 없는 문제점이 있었다.On the other hand, as shown in 1b, in order to integrate the support 1 and the upper plate 4 or the lower plate 5, the upper and lower iron plates 7 of at least 20 mm or more on the upper or lower surface of the support 1 Although the elastic bearing 9 of the structure of combining the upper and lower iron plates 7 with the upper plate 4 or the lower plate 5 with bolts has been disclosed, the elastic bearing 9 is a support ( Although the coupling between 1) and the upper plate 4 or the lower plate 5 was solid, the height of the entire elastic support 9 increased, so there was a problem that it could not be installed in a narrow position.

즉, 고무층 두께 : 12mm × 3개 = 36mmThat is, the thickness of the rubber layer: 12mm × 3 = 36mm

보강철판 두께 : 4mm × 2개 = 8mmReinforced steel plate thickness: 4mm × 2 = 8mm

상부철판과 하부철판 두께 : 20mm × 2개소 = 40mmThickness of the upper and lower plates: 20mm × 2 = 40mm

합계 : 84mmTotal: 84mm

따라서, 교각과 교량상판의 간격이 84mm 이하의 공간에는 시공할 수 없는 문제점이 있었다.Therefore, there was a problem that construction could not be performed in a space where the distance between the pier and the bridge deck was 84 mm or less.

그리고 상술한 각 탄성받침(9)들은 부재의 개수가 많기 때문에 시공성 저하 및 제작비용이 상승하는 문제점이 있었다.In addition, since each of the above-described elastic bearings 9 has a large number of members, there is a problem in that workability is lowered and manufacturing cost is increased.

또한, 도 1a에 도시된 탄성받침(9)은 횡하중 전달시 받침(1)과 상부판(4) 또는 하부판(5) 사이가 벌어지는 들뜸 현상이 발생되는 문제점이 있었다.In addition, the elastic bearing 9 shown in FIG. 1A has a problem in that a lifting phenomenon occurs between the bearing 1 and the upper plate 4 or the lower plate 5 when a lateral load is transmitted.

공개특허공보 10-2009-0081231Publication of Patent Publication 10-2009-0081231

이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위해 안출된 것으로, 교각 상부와 교량상판 사이의 간격이 협소하거나 간격이 없는 곳에 다양한 크기의 교량받침을 설치 및 교체할 수 있도록 한 교량의 협소부 교량받침 교체공법을 제공하는데 그 목적이 있다.Accordingly, the present invention has been devised to solve the above-mentioned problems, and the gap between the upper part of the pier and the bridge deck is narrow or there is no gap, so that bridge bearings of various sizes can be installed and replaced. The purpose is to provide a sub-bridge support replacement method.

상기한 목적을 달성하기 위한 본 발명에 따른 교량의 협소부 교량받침 교체공법은 코핑면을 일정한 크기로 천공하여 천공홀을 형성하는 단계(S 1); 상기 천공홀 내에 유압인상장치를 설치하는 단계(S 2); 상기 유압인상장치를 작동시켜 교량상판을 일정높이 인상하는 단계(S 3); 상기 천공홀에 교량받침을 설치하는 단계(S 4); 상기 인상된 교량상판에 유압인상장치의 유압력을 해제시켜 교량상판을 인하하는 단계(S 5); 상기 교량받침의 하부에 종횡으로 철근을 배근하는 단계(S 6); 상기 교량받침의 상부를 교량상판의 저면에 앵커볼트로 고정하는 단계(S 7); 상기 교량받침과 교량상판 사이에 에폭시를 주입하는 단계(S 8); 상기 교량받침의 하부에 무수축몰탈을 타설하는 단계(S 9)로 이루어짐을 특징으로 한다.In order to achieve the above object, the bridge bearing replacement method for narrow parts of a bridge according to the present invention includes the steps of forming a drilling hole by drilling a coping surface to a certain size (S 1); Installing a hydraulic lifting device in the drilling hole (S 2); Lifting the bridge deck to a certain height by operating the hydraulic lifting device (S3); Installing a bridge support in the drilled hole (S 4); lowering the bridge deck by releasing the hydraulic pressure of the hydraulic lifting device on the raised bridge deck (S5); Placing reinforcing bars vertically and horizontally on the lower part of the bridge support (S6); fixing the upper part of the bridge support to the lower surface of the bridge deck with anchor bolts (S7); Injecting epoxy between the bridge support and the bridge deck (S8); It is characterized in that it consists of a step (S9) of pouring non-shrinkage mortar to the lower part of the bridge support.

이상에서 설명한 바와 같이, 본 발명에 따른 교량의 협소부 교량받침 교체공법은 교각과 상판 사이의 간격이 협소하거나 간격이 없는 곳에 다양한 크기의 교량받침을 용이하게 설치 및 교체할 수 있는 이점이 있다.As described above, the narrow part bridge bearing replacement method of the bridge according to the present invention has the advantage of easily installing and replacing bridge bearings of various sizes where the gap between the pier and the upper plate is narrow or there is no gap.

도 1a는 종래기술에 따른 탄성받침을 도시한 단면도 1,
도 1b는 종래기술에 따른 탄성받침을 도시한 단면도 1,
도 2a 내지 도 2j는 본 발명에 따른 교량의 협소부 교량받침 교체공법의 시공과정을 도시한 시공도.
Figure 1a is a cross-sectional view 1 showing an elastic support according to the prior art,
Figure 1b is a cross-sectional view 1 showing an elastic support according to the prior art,
Figures 2a to 2j is a construction diagram showing the construction process of the narrow part bridge support replacement method of the bridge according to the present invention.

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

도 2a 내지 도 2j는 본 발명에 따른 교량의 협소부 교량받침 교체공법의 시공과정을 도시한 시공도이다.2a to 2j are construction views showing the construction process of the narrow part bridge support replacement method of the bridge according to the present invention.

이들 도면에 도시된 바와 같이, 본 발명에 따른 교량의 협소부 교량받침 교체공법은 교각과 상기 교각의 상부에 거치되는 교량상판으로 구성되는 교량에 있어서, 상기 교각의 코핑면(10)을 일정한 크기로 천공하여 천공홀(12)을 형성하는 단계(S 1); 상기 천공홀(12) 내에 유압인상장치(14)를 설치하는 단계(S 2); 상기 유압인상장치(14)를 작동시켜 교량상판(16)을 일정높이 인상하는 단계(S 3); 상기 천공홀(12)에 교량받침(18)을 설치하는 단계(S 4); 상기 인상된 교량상판(16)에 유압인상장치(14)의 유압력을 해제시켜 교량상판(16)을 인하하는 단계(S 5); 상기 교량받침(18)의 하부에 종횡으로 철근(20)을 배근하는 단계(S 6); 상기 교량받침(18)의 상부를 교량상판(16)의 저면에 앵커볼트(22)로 고정하는 단계(S 7); 상기 교량받침(18)과 교량상판(16) 사이에 에폭시(24)를 주입하는 단계(S 8); 상기 교량받침(18)의 하부에 무수축몰탈(26)을 타설하는 단계(S 9)로 이루어진다.As shown in these drawings, in the bridge support replacement method for narrow parts of bridges according to the present invention, in a bridge composed of a pier and a bridge deck mounted on the upper part of the pier, the coping surface 10 of the pier is fixed to a certain size. Forming a perforation hole 12 by drilling (S 1); Installing a hydraulic lifting device 14 in the drilling hole 12 (S 2); Lifting the bridge deck 16 to a certain height by operating the hydraulic lifting device 14 (S3); Installing a bridge support 18 in the drilled hole 12 (S 4); lowering the bridge deck 16 by releasing the hydraulic pressure of the hydraulic lifting device 14 on the raised bridge deck 16 (S5); Placing reinforcing bars 20 vertically and horizontally on the lower part of the bridge support 18 (S 6); fixing the upper part of the bridge support 18 to the lower surface of the bridge deck 16 with anchor bolts 22 (S7); Injecting epoxy 24 between the bridge support 18 and the bridge deck 16 (S8); A step (S9) of pouring non-shrinkage mortar 26 to the lower portion of the bridge support 18 is performed.

즉, 본 발명에 따른 교량의 협소부 교량받침 교체공법은 천공홀 형성단계(S 1), 유압인상장치 설치단계(S 2), 교량상판 인상단계(S 3); 교량받침 설치단계(S 4); 교량상판 인하단계(S 5); 철근 배근단계(S 6); 앵커볼트 고정단계(S 7), 에폭시 주입단계(S 8) 및 무수축몰탈 타설단계(S 9)를 순차적으로 시행하여 교량의 협소부에 다양한 크기의 교량받침(18)을 설치하는 공법이다.That is, the bridge support replacement method for the narrow part of the bridge according to the present invention includes a drilling hole forming step (S 1), a hydraulic lifting device installation step (S 2), a bridge deck lifting step (S 3); Bridge support installation step (S 4); Bridge deck lowering step (S5); reinforcement step (S6); It is a method of installing bridge supports 18 of various sizes in the narrow part of the bridge by sequentially performing the anchor bolt fixing step (S 7), the epoxy injection step (S 8), and the non-shrinkage mortar pouring step (S 9).

여기서, 상기 천공홀 형성단계(S 1)는 교각의 코핑면(10)을 코어드릴을 이용하여 사각형상의 천공홀(12)을 다수개 일정한 방향으로 형성하는 것이다.Here, in the drilling hole forming step (S 1 ), a plurality of rectangular drilling holes 12 are formed in a predetermined direction on the coping surface 10 of the pier using a core drill.

상기 코어드릴은 다이아몬드 또는 특수 초경합금을 매트릭스 합금으로 결합한 날이 있는 원통형의 절삭공구를 회전시켜 코핑면에 겹침 구멍을 내기 위한 장치이다.The core drill is a device for making overlapping holes on a coping surface by rotating a cylindrical cutting tool having a blade in which diamond or special cemented carbide is combined with a matrix alloy.

이어서, 상기 유압인상장치 설치단계(S 2)는 다수개의 천공홀(12)에 유압인상장치(14)를 설치하고, 이들 천공홀(12)에 설치된 유압인상장치(14)를 병렬연결하여 교량상판(16)의 동시인상이 가능하도록 한다.Subsequently, in the step of installing the hydraulic lifting device (S2), the hydraulic lifting device 14 is installed in a plurality of drilling holes 12, and the hydraulic lifting device 14 installed in the drilling holes 12 is connected in parallel to bridge the bridge. Simultaneous lifting of the upper plate 16 is possible.

이어서, 상기 교량받침 인상단계(S 3)는 각각의 천공홀(12)에 개별적으로 설치된 유압인상장치(14)를 병렬연결하여 교량상판(16)의 동시인상이 가능한 상태에서 상기 유압인상장치(14)에 유압력을 행사하여 교량상판(16)을 천공홀(12)부터 상향으로 일정높이 인상시킨다Subsequently, in the bridge support lifting step (S3), the hydraulic lifting device 14 individually installed in each drilling hole 12 is connected in parallel to simultaneously lift the bridge deck 16, and the hydraulic lifting device ( 14) to raise the bridge deck 16 upward from the drilling hole 12 to a certain height by applying hydraulic force to

이어서, 상기 교량받침 설치단계(S 4)는 유압인상장치(14)에 의해 교량상판(16)이 일정높이 인상된 상태에서 천공홀(12)에 다양한 크기의 교량받침(18)을 설치 및 교체하는 것이다.Subsequently, in the bridge support installation step (S4), in a state where the bridge deck 16 is raised to a certain height by the hydraulic lifting device 14, various sizes of bridge supports 18 are installed and replaced in the drilling holes 12 is to do

이어서, 상기 교량상판 인하단계(S 5)는 천공홀(12)에 교량받침(18)이 설치된 상태에서 교량상판(16)에 가해진 유압인상장치(14)의 유압력을 해제시켜 교량상판(16)을 교량받침(18) 상부로 인하시킨다.Subsequently, in the bridge deck lowering step (S5), the hydraulic pressure of the hydraulic lifting device 14 applied to the bridge deck 16 is released in the state where the bridge support 18 is installed in the drilling hole 12, thereby removing the bridge deck 16 ) is lowered to the top of the bridge support (18).

이어서, 상기 철근배근단계(S 6)는 교량받침(18)의 하부에 종횡으로 철근(20)을 배근한다.Then, in the reinforcement step (S6), the reinforcement 20 is placed vertically and horizontally on the lower part of the bridge bearing 18.

상기 앵커볼트 고정단계(S 7)는 교량받침(18)의 상부를 교량상판(16)의 저면에 앵커볼트(22)로 고정한다.In the anchor bolt fixing step (S7), the upper part of the bridge support 18 is fixed to the lower surface of the bridge deck 16 with anchor bolts 22.

상기 에폭시 주입단계(S 8)는 교량받침(18)과 교량상판(16) 사이에 에폭시를 주입한다.In the epoxy injection step (S8), epoxy is injected between the bridge bearing 18 and the bridge deck 16.

여기서, 상기 에폭시는 에폭시기가 아민기나 무수 카르본산과 반응하기 쉬운 것을 이용하여 고분자화시킨 것으로서, 그 대표적인 것으로는 비스페놀 A와 에피클로로히드린의 선상축합물이 있다. 이것은 위와 같은 모노머에 유기아민과 같은 경화제를 작용시켜 성상화합물 사이에 가교를 만들어 고분자화한 것이다. Here, the epoxy is polymerized using an epoxy group easily reacted with an amine group or carboxylic acid anhydride, and a representative example thereof is a linear condensate of bisphenol A and epichlorohydrin. This is polymerized by making cross-links between star-shaped compounds by acting a curing agent such as an organic amine on the above monomers.

상기 에폭시는 기계적인 강도·내수성·전기적 특성 등이 뛰어나지만, 그 밖에 경화할 때 줄지 않는 것과 접착성이 매우 크다는 점에서 주형품이나 적층판으로, 또한 접착제로 쓰이고 있다.The epoxy has excellent mechanical strength, water resistance, electrical properties, etc., but is also used as a mold product, laminated plate, or adhesive in that it does not shrink when cured and has a very high adhesiveness.

상기 무수축몰탈 타설단계(S 9)는 교량받침(18)의 하부에 무수축몰탈(26)을 타설 및 양생시킨다.In the non-shrinkage mortar placing step (S9), the non-shrinkage mortar 26 is placed and cured under the bridge support 18.

여기서, 상기 무수축몰탈은 시멘트 경화과정에서 수축하지 않는 몰탈을 의미한다.Here, the non-shrinkage mortar means a mortar that does not shrink during cement hardening.

상기한 바와 같은 단계로 이루어진 본 발명에 따른 교량의 협소부 교량받침 교체공법은 교각의 상부인 코핑면과 교량상판 사이의 간격이 협소하거나 간격이 없는 곳에 다양한 크기의 교량받침을 설치 및 교체할 수 있다.The narrow part bridge bearing replacement method of the bridge according to the present invention consisting of the steps described above can install and replace bridge bearings of various sizes where the gap between the coping surface, which is the upper part of the pier, and the bridge deck is narrow or there is no gap. there is.

본 발명의 상세한 설명에 기재한 바람직한 실시예는 예시적인 것으로서 한정적인 것은 아니며, 본 발명의 범위는 첨부된 특허청구범위에 의해서 나타나 있고, 그들 특허청구범위의 의미중에 들어가는 모든 변형예는 본 발명에 포함되는 것이다.Preferred embodiments described in the detailed description of the present invention are illustrative and not limiting, the scope of the present invention is shown by the appended claims, and all modifications that fall within the meaning of those claims do not apply to the present invention. will be included

10: 코핑면 12: 천공홀
14: 유압인상장치 16: 교량상판
18: 교량받침 20: 철근
22: 앵커볼트 24: 에폭시
26: 무수축몰탈
10: coping surface 12: perforated hole
14: hydraulic lifting device 16: bridge deck
18: bridge support 20: reinforcing bar
22: anchor bolt 24: epoxy
26: non-shrinkable mortar

Claims (1)

교각의 코핑면(10)을 다이아몬드 또는 특수 초경합금을 매트릭스 합금으로 결합된 날이 있는 원통형의 절삭공구를 회전시켜 코핑면에 겹침 구멍을 내기 위한 장치인 코어드릴을 이용하여 일정한 크기의 사각형상으로 다수개를 천공하여 천공홀(12)을 형성하는 단계(S 1);
상기 천공홀(12) 내에 유압인상장치(14)를 설치하되, 이들 천공홀(12)에 설치된 유압인상장치(14)를 병렬연결하여 교량상판(16)의 동시인상이 가능하도록 유압인상장치를 설치하는 단계(S 2);
상기 각각의 천공홀(12)에 개별적으로 설치된 유압인상장치(14)를 병렬연결하여 교량상판(16)의 동시인상이 가능한 상태에서 상기 유압인상장치(14)에 유압력을 행사하여 교량상판(16)을 천공홀(12)로부터 상향으로 일정높이 인상하는 단계(S 3);
상기 유압인상장치(14)에 의해 교량상판(16)이 일정높이 인상된 상태에서 천공홀(12)에 다양한 크기의 교량받침(18)을 설치하는 단계(S 4);
상기 천공홀(12)에 교량받침(18)이 설치된 상태에서 교량상판(16)에 가해진 유압인상장치(14)의 유압력을 해제시켜 교량상판(16)을 교량받침(18) 상부로 인하하는 단계(S 5);
상기 교량받침(18)의 하부에 종횡으로 철근(20)을 배근하는 단계(S 6);
상기 교량받침(18)의 상부를 교량상판(16)의 저면에 앵커볼트(22)로 고정하는 단계(S 7);
상기 교량받침(18)과 교량상판(16) 사이에 에폭시기가 아민기나 무수 카르본산과 반응하기 쉬운 것을 이용하여 고분자화시킨 비스페놀 A와 에피클로로히드린의 선상축합물인 에폭시(24)를 주입하는 단계(S 8);
상기 교량받침(18)의 하부에 시멘트 경화과정에서 수축하지 않는 몰탈인 무수축몰탈(26)을 타설하는 단계(S 9)로 이루어짐으로써 교각상부와 교량상판 사이의 간격이 협소하거나 간격이 없는 곳에 다양한 크기의 교량받침을 설치 및 교체할 수 있도록 함을 특징으로 하는 교량의 협소부 교량받침 교체공법.
The coping surface 10 of the pier rotates a cylindrical cutting tool with a blade in which diamond or special cemented carbide is combined with a matrix alloy to make overlapping holes on the coping surface. Drilling a dog to form a drilling hole 12 (S 1);
The hydraulic lifting device 14 is installed in the drilling hole 12, and the hydraulic lifting device 14 installed in the drilling hole 12 is connected in parallel to enable simultaneous lifting of the bridge deck 16. Installing (S 2);
The bridge deck ( 16) lifting a certain height upward from the drilling hole 12 (S 3);
Installing bridge supports 18 of various sizes in the drilling holes 12 in a state where the bridge deck 16 is raised to a certain height by the hydraulic lifting device 14 (S 4);
In the state where the bridge support 18 is installed in the drilling hole 12, the hydraulic pressure of the hydraulic lifting device 14 applied to the bridge deck 16 is released to lower the bridge deck 16 to the top of the bridge support 18 Step (S 5);
Placing reinforcing bars 20 vertically and horizontally on the lower part of the bridge support 18 (S 6);
fixing the upper part of the bridge support 18 to the lower surface of the bridge deck 16 with anchor bolts 22 (S7);
Injecting epoxy 24, which is a linear condensate of bisphenol A and epichlorohydrin, which is polymerized by using an epoxy group that easily reacts with an amine group or carboxylic acid anhydride between the bridge support 18 and the bridge deck 16 (S8);
The step (S 9) of pouring non-shrinkage mortar 26, which is mortar that does not shrink during the cement hardening process, on the lower part of the bridge support 18, where the gap between the upper part of the pier and the bridge deck is narrow or there is no gap. Bridge support replacement method for narrow parts of bridges, characterized in that it allows installation and replacement of bridge bearings of various sizes.
KR1020220103938A 2022-08-19 2022-08-19 Replacement Method of Bridge Bearing in Narrow Section of Bridge KR102519425B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247225A (en) * 2006-03-15 2007-09-27 Oriental Construction Co Ltd Continuous girder structure formed of a plurality of simple girder bridges, and construction method
KR20090081231A (en) 2008-01-23 2009-07-28 주식회사 부흥시스템 steel-laminated elastomeric bearings for supporting small-sized of a bridge
KR101897099B1 (en) * 2017-06-16 2018-09-11 포인텍이앤씨(주) Non-lifting bridge support construction method
KR101912061B1 (en) * 2018-02-09 2018-11-30 송우호 A Through Hole Type Anchor for Filling Upper Slab of Bridge Support and Filling Method for Upper Slab

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247225A (en) * 2006-03-15 2007-09-27 Oriental Construction Co Ltd Continuous girder structure formed of a plurality of simple girder bridges, and construction method
KR20090081231A (en) 2008-01-23 2009-07-28 주식회사 부흥시스템 steel-laminated elastomeric bearings for supporting small-sized of a bridge
KR101897099B1 (en) * 2017-06-16 2018-09-11 포인텍이앤씨(주) Non-lifting bridge support construction method
KR101912061B1 (en) * 2018-02-09 2018-11-30 송우호 A Through Hole Type Anchor for Filling Upper Slab of Bridge Support and Filling Method for Upper Slab

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