KR20090099284A - Deflection measurement device of a box girder bridge for the safety check - Google Patents

Deflection measurement device of a box girder bridge for the safety check Download PDF

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KR20090099284A
KR20090099284A KR1020080024437A KR20080024437A KR20090099284A KR 20090099284 A KR20090099284 A KR 20090099284A KR 1020080024437 A KR1020080024437 A KR 1020080024437A KR 20080024437 A KR20080024437 A KR 20080024437A KR 20090099284 A KR20090099284 A KR 20090099284A
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bridge
deflection
box type
wire
box
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KR1020080024437A
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Korean (ko)
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유근무
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주식회사 아워브레인
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Publication of KR20090099284A publication Critical patent/KR20090099284A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/02—Details of balancing machines or devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

A deflection measurement device of a box type bridge for a safety check is provided to have a device for measuring deflection of an upper bridge facility inside a box type girder in the box type bridge, thereby determining whether the bridge is safe. A deflection measurement device of a box type bridge for a safety check includes a partition wall(10), a wire(20) and a measurement apparatus(30). The partition wall is formed in both sides of a box type girder(2). A central part of the partition wall is opened. The wire connects the both partition walls at a fixed height. The measurement apparatus is perpendicularly installed in the center under the box type girder. The measurement apparatus is connected to the wire.

Description

ＢＯＸ형교량의 안전진단을 위한 처짐측정장치{Deflection measurement device of a box girder bridge for the safety check}Deflection measurement device of a box girder bridge for the safety check

본 발명은 교량상부가 BOX형인 경우 교량상부 내부에서 처짐을 측정할 수 있는 장치을 설명하는 것으로, 교량상부에서 거더의 처짐상태 등의 변위를 용이하게 측정할 수 있는 장치를 제공함으로써 교량의 안전 여부를 용이하게 판단할 수 있도록 한 BOX형교량상부에서의 처짐측정장치에 관한 것이다. The present invention describes a device capable of measuring deflection inside the upper part of the bridge when the upper part of the bridge is a BOX type. The present invention provides a device capable of easily measuring displacements such as deflection of the girder in the upper part of the bridge. The present invention relates to a deflection measuring device on a box-shaped bridge that can be easily judged.

일반적으로 교량은 하천, 해협, 만, 운하 혹은 다른 교통로나 구축물 등의 위를 건너갈 수 있도록 만든 고가구조물로서, 교각 상부에 교량상부시설물이 설치되게 된다.In general, bridges are elevated structures that allow them to cross over rivers, straits, bays, canals, or other traffic routes or structures.

이러한 용도로 사용되는 교량은 상부에 차량등의 하중통과에 의해 거더에는 처짐이 발생하는 등의 변위가 발생하게 되는데 재하되는 하중과 거더의 처짐의 크기를 측정하여 안전여부를 판단하는 것이 교량안전진단시 필수적으로 이루어져야 하는 사항이다.The bridge used for this purpose causes displacement such as sagging in the girder due to the passage of loads such as a vehicle on the upper part.By measuring safety of the bridge and measuring the magnitude of the sagging of the girder It is a matter that must be done.

이러한 교량상판의 처짐을 측정하기 위한 장치로서 기존의 방식에는 '교량의 거더의 하면과 지면의 고정점 간에 계측장치를 설치하고 교량의 상부에 하중을 재하하여 이 때 발생되는 처짐량의 크기를 계측장치로 측정하여 교량의 안전여부를 판단하여 왔다.As a device for measuring the deflection of the bridge deck, the conventional method is to install a measuring device between the lower surface of the bridge girder and the fixed point of the ground, and load the load on the upper part of the bridge to measure the amount of deflection generated at this time. It has been judged whether the bridge is safe or not.

하지만 상기의 방식에 의할 경우 교량하부가 강이나 바다 혹은 교통량이 많은 도로등 현장여건으로 인하여 접근이 어려울 경우에는 측정장치를 설치하는데 많은 어려움이 있었고, 이러한 현장여건에서 주기적으로 처짐측정장치를 설치하고 제거하는데 많은 시간과 노력이 소요되어 비효율적이었다.However, according to the above method, when the lower part of the bridge is difficult to access due to site conditions such as river, sea, or road with heavy traffic, it has been difficult to install the measuring device. It took a lot of time and effort to remove and was inefficient.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 그 주된 목적은 BOX형교량에서 BOX형거더의 내부에 교량상부시설의 처짐을 측정할 수 있는 장치를 구비하여 교량의 처짐을 측정함으로서 교량의 안전 여부를 판단할 수 있으며, 이러한 처짐 측정을 BOX형거더의 내부에서 행할 수 있도록 편리성와 효율성을 제고함을 목적으로 한다.The present invention is to solve the above problems, the main object of the BOX type bridge in the box girder is provided with a device that can measure the deflection of the upper bridge facility to measure the deflection of the bridge by measuring the deflection of the bridge The purpose of this study is to improve the convenience and efficiency so that the deflection measurement can be performed inside the box type girder.

본 발명은 BOX형교량의 안전진단을 위해 교량상판 중앙에서의 처짐을 측정하는 BOX형교량의 처짐측정장치에 있어서, BOX형거더(2)를 지지하는 양 교각(1)의 상단에 위치한 양 격벽(10)을 연결하는 와이어(20); 및 상기 BOX형거더(2)의 내부 윗면 그리고 경간의 중앙에 수직으로 설치되어 와이어(20)와 연결되는 계측장치(30); 를 구비하는 것을 특징으로 하는 BOX형교량의 안전진단을 위한 처짐측정장치를 제공한다.The present invention is a deflection measuring device of the box-shaped bridge for measuring the deflection at the center of the bridge deck for the safety diagnosis of the box-shaped bridge, both partition walls located on the upper end of both piers (1) supporting the BOX type girders (2) A wire 20 connecting the 10; And a measuring device 30 installed vertically at the center of the inner upper surface and the span of the BOX type girder 2 and connected to the wire 20; It provides a deflection measuring device for the safety diagnosis of the BOX type bridge characterized in that it comprises a.

위와 같은 본 발명을 이용하면 다음과 같은 효과를 얻을 수 있게 된다.By using the present invention as described above it is possible to obtain the following effects.

첫째, BOX형교량의 특징을 잘 활용한 것으로 BOX형교량에서는 거더의 하부 바닥면에 처짐측정장치를 설치할 필요가 없어서 교량의 하부가 강, 운하, 해협, 계 곡 등인 경우에 교량의 상부에서 용이하게 처짐을 측정할 수 있어 기존의 방식보다 편리하다.First, it utilizes the features of BOX type bridges well. In BOX type bridges, it is not necessary to install the deflection measuring device at the bottom of the girder, so it is easy to use the upper part of the bridge when the lower part of the bridge is river, canal, strait, valley, etc. The deflection can be measured more conveniently than the conventional method.

둘째, 거더를 지지하는 교각은 처짐이 발생하지 않으므로 교각위치의 BOX형교량 내부에 위치한 격벽은 처짐이 발생하지 않으므로 교량상판 중앙에서 처짐을 측정함에 있어서 정확성을 기할 수 있다.Second, since the pier supporting the girder does not cause sag, the partition wall located inside the BOX type bridge at the pier position does not cause sag, so accuracy in measuring sag at the center of the bridge deck can be ensured.

셋째, 장비가 간단하여 설치가 용이하며, 장비를 사용한 처짐측정방법도 간편하므로 사용자가 편리하게 사용할 수 있다.Third, the equipment is simple and easy to install, and the deflection measurement method using the equipment is also simple, so the user can use it conveniently.

넷째, 장비의 설치 및 회수가 용이하여 장비 사용에 의해 시험할 경우 처짐측정의 정확도를 높일 수 있다.Fourth, the installation and recovery of the equipment is easy, so that the accuracy of the deflection measurement can be increased when testing by the use of the equipment.

이하에서는 도시된 도면에 따라 본 발명을 더욱 상세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.

도1은 종래 처짐측정방식으로 교량의 거더의 하면과 지상의 고정점간에 처짐측정이 가능한 계측장치를 설치하고 하중을 재하하여 처짐량을 측정하는 방법을 도시한 것이다.Figure 1 shows a method of measuring the amount of deflection by installing a measuring device capable of measuring the deflection between the lower surface of the girder of the bridge and the fixed point of the ground by the conventional deflection measurement method.

도2는 본 발명에 따른 처짐측정장치를 BOX형교량의 BOX형거더내부에 설치한 모습을 도시한 것이다.Figure 2 shows the installation of the deflection measuring apparatus according to the present invention inside the box-shaped girder of the box-shaped bridge.

격벽(10)은 BOX형교량의 교량상부 BOX형거더(2) 내부에 위치하는 것으로 이하 설명할 와이어(20)의 양 끝단이 고정되는 곳이다. BOX형거더(2)의 경우는 수평 방향으로 길게 뉘어져 있는 형상을 하고 있어서 그 위를 지나다니는 차량, 열차 및 교량 자체의 하중에 의해서 따라 아래 방향으로 처짐이 발생하지만 교각(1)은 이러한 BOX형거더(2)을 지지해 주는 역할을 하는 것으로 지면과 수직을 이루고 세워져 있어서 일반적으로 변위가 발생하지 않는다. 또한, 교각(1)의 바로 윗부분의 BOX형거더(2)에서도 처짐이 발생하지 않게 된다. 이를 이용하여 추후에 BOX형거더(2)의 처짐을 측정함에 있어서 BOX형거더(2)를 지지하는 양 교각(1) 위에 존재하는 양 격벽(10)의 일정한 위치에 양 격벽(10)을 연결하는 와이어(20)를 설치하여 이를 기준점으로 설정하여 BOX형거더(2)의 처짐을 측정할 수 있다.The partition wall 10 is located in the upper BOX type girder 2 of the bridge of the BOX type bridge, and is a place where both ends of the wire 20 to be described below are fixed. In the case of the BOX type girder 2, the shape is long and divided in the horizontal direction, and the deflection occurs downward depending on the load of the vehicle, the train, and the bridge itself passing therethrough, but the pier 1 has such a box. It serves to support the mold girder (2) and is perpendicular to the ground so that it does not generally cause displacement. In addition, deflection does not occur in the BOX type girder 2 immediately above the pier 1. In the subsequent measurement of deflection of the BOX type girder 2 by connecting the two barrier ribs 10 at a constant position of the two partition walls 10 existing on both piers (1) supporting the BOX type girder (2). By installing the wire 20 to set it as a reference point can measure the deflection of the BOX type girder (2).

와이어(20)는 상기 BOX형거더(2)를 지지하는 양 교각(1)의 상단에 존재하는 양 격벽(10)을 일정한 높이에서 연결하는 것으로, 양 격벽(10)을 연결하여 상기 BOX형거더(2)의 처짐을 측정하는데 기준되는 높이를 제공해 준다. 와이어(20)는 비단 철선뿐 아니라 팽팽한 상태를 유지할 수 있는 성질을 가지고 있는 것이면 그 재질은 무관하나 장치의 사용이나 처짐측정결과 면에서 정확하게 하기 위해 철선이나 와이어를 사용하는 것이 바람직하다.The wire 20 connects both partition walls 10 present at the upper ends of both piers 1 supporting the BOX type girder 2 at a constant height, and connects both partition walls 10 to the BOX type girder. Provide a reference height to measure the deflection of (2). If the wire 20 is not only silk wire but also has a property of maintaining a taut state, the material is irrelevant but it is preferable to use a wire or a wire in order to be accurate in terms of using the device or measuring sag.

계측장치(30)는 상기 양 격벽(10)을 연결하는 와이어(20)에 의해서 BOX형거더(2)의 내부에 와이어(20)가 뻗어있게 되면 그 와이어(20)와 BOX형거더(2)의 내부 아랫면 사이의 거리의 변화를 측정해주는 장치이다. 계측장치(30)는 일정한 길이를 가진 것이나 상기 와이어(20)와 BOX형거더(2)를 경간의 중앙에서 연결하는 것으로 BOX형거더(2)의 아랫면과 수직으로 설치되어 처짐이 발생할 경우 계측장치(30)의 길이가 변하면서 계측장치(30)의 눈금이 변하여 처짐을 측정하게 된다. 즉, 일정한 길이를 갖고 있기는 하나 양단에 걸리는 미세한 힘에도 쉽게 길이가 증감되는 특징을 가지고 있다. BOX형거더(2)에서 일반적으로 처짐이 가장 많이 발생하는 위치는 경간의 중앙에 해당하기 때문에 상기 계측장치(30)는 경간의 중앙 BOX형거더(2)의 내부 아랫면에 설치하게 된다.The measuring device 30 has the wire 20 and the box-type girder 2 when the wire 20 extends inside the box-type girder 2 by the wires 20 connecting the two partition walls 10. It is a device that measures the change in distance between the inner bottom of the device. The measuring device 30 is one having a certain length or connecting the wire 20 and the BOX type girder 2 at the center of the span so that the measuring device 30 is installed perpendicular to the lower surface of the BOX type girder 2 and the deflection occurs. As the length of the 30 changes, the scale of the measuring device 30 changes to measure sag. That is, although it has a certain length, it has a feature that the length is easily increased or decreased even in the minute force applied to both ends. In the BOX type girder 2, the position where the most deflection occurs generally corresponds to the center of the span, so that the measuring device 30 is installed on the inner bottom surface of the center BOX type girder 2 of the span.

인축장치(50)는 상기 와이어(20)가 팽팽하게 되도록 당겨주는 역할을 하는 것이다. 상기 살핀바, 와이어(20)는 교량상판(2)과 일정한 거리를 유지할 수 있도록 팽팽하게 장착되어 안전시험을 위한 하중이 가해지더라도 그 상태를 유지해야 한다. 그러므로 이러한 상태유지를 위해서는 와이어(20)가 팽팽한 상태가 되어야 하므로 이러한 상태를 만들이 위해서 와이어의 양 끝단 혹은 어느 일단에 인축장치(50)를 구비하여 와이어(20) 설치후에 인축장치(50)를 사용하여 와이어를 팽팽하게 당겨주어야 한다.The constriction device 50 serves to pull the wire 20 to be taut. The salping bar and the wire 20 should be kept taut to be securely mounted to maintain a constant distance from the bridge top plate 2 even if a load for safety testing is applied. Therefore, in order to maintain such a state, the wire 20 must be in a taut state, so that the retracting device 50 is provided after the wire 20 is installed by providing the retracting device 50 at both ends or at one end of the wire to create such a state. Tension the wires.

도1은 종래의 처짐측정방법을 도시한 것이다.1 shows a conventional deflection measuring method.

도2는 본 발명에 따른 BOX형교량의 안전진단을 위한 처짐측정장치를 BOX형거더 내부에 설치한 모습을 도시한 것이다.Figure 2 shows the installation of the deflection measuring device for the safety diagnosis of the box-shaped bridge according to the present invention inside the box-type girder.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1. 교각 2. BOX형거더1. Pier 2. BOX Type Girder

10. 격벽 20. 와이어10. Bulkhead 20. Wire

30. 계측장치 40. 인축장치30. Measuring device 40. Retractor

Claims (2)

BOX형거더(2)가 설치된 교량의 안전진단을 위해 경간 중앙에서의 처짐을 측정하는 장치로서,As a device for measuring the deflection at the center of span for safety diagnosis of bridges with a box-type girder (2), 상기 BOX형거더(2) 양 측면에 각각 형성되고 중단이 오픈된 격벽(10);Partitions 10 formed on both sides of the BOX-type girder 2 and the suspension is open; 상기 양 격벽(10)을 일정한 높이에서 연결하는 와이어(20); 및A wire 20 connecting the two partition walls 10 at a constant height; And 상기 BOX형거더(2)의 내부 아랫면 중앙에 수직으로 설치되어 와이어(20)와 연결되는 계측장치(30); 를 구비하는 것을 특징으로 하는 BOX형교량의 안전진단을 위한 처짐측정장치.A measuring device 30 installed vertically at the center of the inner bottom surface of the BOX type girder 2 and connected to the wire 20; Deflection measuring device for the safety diagnosis of the BOX type bridge characterized in that it comprises a. 제1항에서,In claim 1, 상기 와이어(20)의 양 끝단 혹은 일단에 인축장치(40)를 추가로 구비한 것을 특징으로 하는 BOX형교량의 안전진단을 위한 처짐측정장치.Deflection measuring device for the safety diagnosis of the BOX-type bridge, characterized in that it further comprises a retraction device 40 at both ends or one end of the wire (20).
KR1020080024437A 2008-03-17 2008-03-17 Deflection measurement device of a box girder bridge for the safety check KR20090099284A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180083198A (en) * 2017-01-12 2018-07-20 두산중공업 주식회사 Measuring Apparatus For Crane Girder, And Operating Method Thereof
KR102320599B1 (en) * 2021-05-24 2021-11-02 주식회사 동서기술 an apparatus for measuring reflection of a structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180083198A (en) * 2017-01-12 2018-07-20 두산중공업 주식회사 Measuring Apparatus For Crane Girder, And Operating Method Thereof
KR102320599B1 (en) * 2021-05-24 2021-11-02 주식회사 동서기술 an apparatus for measuring reflection of a structure

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