• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 추계학술발표회 논문집
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• pp.111-116
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• 2004

This study is given that on the bridge construction in marine by GPS, specially, choice of station for footing construction of marine bridge. You can get positive datum in the checking of marine excavation, if you use together Total Station and GPS. In the result of comparision of upper surveying methods, Surveying datum is gotten error of less than 30mm(The depth of water 10～l5mm, station 7～10mm). This study show that hereafter if you use GPS in bridge construction in marine you can get accurateiy datum.

• 농촌계획
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• 제22권3호
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• pp.63-70
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• 2016

Due to the Korea's topographic characteristic, there are a lot of marine bridges to connect between islands and mainland. In addition, marine bridges play an important role in a regional landscape. For these reasons, landscape design of bridge is necessary in order to improve beautification of region. So, this studies analyzed image and landscape preference of marine bridges in rural area. The main results were summarized as follows: When rating the image of the background in sea and mountain image, 'stable' and 'natural' were rated highly. When rating the image of the arch bridge in sea and mountain image, 'beautiful', and 'attractive' were rated highly. When rating the image of the cable-stayed bridge in sea and mountain image, 'splendid', and 'attractive' were rated highly. When rating the image of the suspension bridge in sea and mountain image, 'beautiful', and 'splendid' were rated highly. Next, When rating the image of the background in sea and building image, 'stable' and 'natural' were rated highly. When rating the image of the arch bridge in sea and building image, 'beautiful', and 'splendid' were rated highly. When rating the image of the cable-stayed bridge in sea and building image, 'beautiful', and 'attractive' were rated highly. When rating the image of the suspension bridge in sea and building image, 'beautiful', and 'attractive' were rated highly. And, The image of suspension bridges in sea and mountain image is more highly preferred than other image. The background in sea and mountain image is landscape of the lowest preference. In the mountain and sea image, the preference of suspension bridge landscape has the highest rating. In the sea and building image, the preference of arch bridge landscape has the highest rating. In conclusion, the results illustrate that the marine bridge's shape and its background in rural area are important elements of a visual preference. When designing the marine bridge, designer have to choose a proper bridge shape for its background. However, this research's limitation is that this research consider only bridge shape and background to analyze landscape preference of marine bridges. Therefore, further research is necessary to consider various elements.

• 해양환경안전학회지
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• 제28권7호
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• pp.1111-1119
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• 2022

신안군 해역의 섬을 통한 관광사업이 활발해지면서 도서 간을 연결하는 해상교량은 현재까지 총 13개가 완공되었다. 그러나 통항로에 설치된 해상교량은 선박통항에 있어 위험성을 주며, 특히 섬과 섬을 연결하는 연도교의 경우 수로의 폭이 매우 좁아 그 위험도는 더욱 높다. 본 연구는 신안군 해역의 연도교에 대한 해상교통조사를 토대로 교각과 선박의 충돌위험도를 항만수로의 위험도 평가 모델인 IWRAP(IALA Waterway Risk Assessment Program)을 활용하여 평가하였다. 그 결과 신안1교가 충돌확률이 가장 높은 것으로 분석되었으며, 통항선박의 대부분은 연안 여객선으로 나타났다. 또한, 신안1교는 대상해역의 교각 중 가장 충돌사고가 많이 발생한 곳으로 본 연구에서는 그 원인을 분석하고자 하였다. 신안1교 해역환경의 위성사진을 영상처리기법으로 분석한 결과 해도에는 볼 수 없는 장애물이 교량 근처에 존재하는 것을 확인할 수 있었다. 이로 인해 장애물을 피해 교량의 통항유도방식인 양방향 통항과 달리 한 방향으로 통항이 집중되는 것을 알 수 있었다. 본 연구의 영상처리기법을 활용한 위험원인 분석방법은 향후 연도교의 위험요인 분석을 하는데 기초자료로 활용될 수 있을 것으로 기대된다.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2006년도 전기학술대회논문집
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• pp.163-165
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• 2006

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2018년도 공동국제학술발표회
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• pp.179-179
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• 2018

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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• pp.355-358
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• 2005

Corrosion of reinforced concrete structures in marine environment is one of the most important mechanisms of deterioration. Under Korean highway bridge, the time for the steel reinforcement in the concrete to exhibit initial signs of corrosion is within three decades. Therefore, 'SUM JIN' highway bridge, located in a corrosive marine environment on the south of Korea, had been examined the current condition of the steel reinforcement corrosion in concrete by half-cell potentials, chloride contamination of concrete and so on. According to the tests, the protecting film around the reinforcement is deteriorated and corrosion activity developed in tidal zone. The purpose of this paper is to report the effects of 'SUM JIN' highway bridge damaged by chlodide attack and to present the results of repair of 'SUM JIN' highway concrete bridge in domestic marine environment.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2005년도 춘계학술대회 논문집
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• pp.85-93
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• 2005

평택항은 2001년 ‘평택항 종합개발 기간계획 정비용역’ 에서 선박의 내항 이용 방법이 갑문식에서 감조식으로 변경됨에 따라 기 건설된 서해대교 입구의 남측호안을 철거하여 선박이 상시 내항을 이용할 수 있도록 계획중이다. 이에 이 연구에서는 남측호안이 철거된 후 평택항을 고려하여 서해대교 하부를 통항하여 내항에 안전하게 입출항이 가능한지를 이론적 고찰 및 풀미션시뮬레이터를 이용하여 평가하고 문제점 발생시 대안을 제시한다.

• 해양환경안전학회지
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• 제11권1호
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• pp.17-22
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• 2005

선박의 항해 계기들의 기술이 발전됨에 따라 많은 장비들이 개발되고 있으나 여전히 인간과실에 의한 해양 사고는 지속적으로 발생하고 있는 현실에서, 인간과실에 의한 사고를 감소시키기 위하여 선교의 항해 계기들은 인간공학적적으로 배치, 설계되었는지가 많은 관심의 대상이 되고 있다 선교 내 여러 계기들의 알람장치는 선교 근무자에게 그 알람 장치가 주고자 하는 정보를 가능한 빨리 인식하고 정확한 정보를 전달할 수 있도록 설계되어야 하며, 국제적으로 인간공학적 선교를 위한 알람장치(Bridge Alarm Management System : BAMS)의 필요성이 논의 되고 있으나 아직 실질적인 설계방법 등에 대해서는 논의가 이루어지고 있지 않다. 따라서 본 논문에서는 선박의 여러 설비 중 선교의 알람장치에 관한 인간공학적 개념의 설계에 대하여 알아보고 현재 개발, 운용 중인 인간공학적 통합선교시스템(Integrated Bridge System :IBS)의 선교통합알람장치(Ergonomic Integrated Bridge Alarm Management System : EIBAMS)에 관한 개념적인 설계를 제안하고자 한다.

• 한국도로학회논문집
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• 제15권1호
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• pp.1-9
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• 2013

PURPOSES: The purpose of this study is to evaluate physical properties, durability, fatigue resistance, and long-term performance of poly-urethane concrete (PU) which can be possible application of thin layer on long-span orthotropic steel bridge and to check structural stability of bridge structure. METHODS : Various tests of physical properties, such as flexural strength, tensile strength, bond strength and coefficient of thermal expansion tests were conducted for physical property evaluation using two types of poly urethane concrete which have different curing time. Freezing and thawing test, accelerated weathering test and chloride ion penetration test were performed to evaluate the effect of exposed to marine environment. Beam fatigue test and small scale accelerated pavement test were performed to assess the resistance of PU against fatigue damage and long-term performance. Structural analysis were conducted to figure out structural stability of bridge structure and thin bridge deck pavement system. RESULTS: The property tests results showed that similar results were observed overall however the flexural strength of PUa was higher than those of PUb. It was also found that PU materials showed durability at marine environment. Beam fatigue test results showed that the resistances of the PUa against fatigue damage were two times higher than those of the PUb. It was found form small scale accelerated pavement test to evaluate long-term performance that there is no distress observed after 800,000 load applications. Structural analysis to figure out structural stability of bridge structure and thin bridge deck pavement system indicated that bridge structures were needed to increase thickness of steel deck plate or to improve longitudinal rib shape. CONCLUSIONS: It has been known that the use of PU can be positively considered to thin layer on long-span orthotropic steel bridge in terms of properties considered marine environment, resistance of fatigue damage and long-term performance.

• Earthquakes and Structures
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• 제3권5호
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• pp.649-673
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• 2012

Recent studies have highlighted the importance of accounting for aging and deterioration of bridges when estimating their seismic vulnerability. Effects of structural degradation of multiple bridge components, variations in bridge geometry, and comparison of different environmental exposure conditions have traditionally been ignored in the development of seismic fragility curves for aging concrete highway bridges. This study focuses on the degradation of multiple bridge components of a geometrically varying bridge class, as opposed to a single bridge sample, to arrive at time-dependent seismic bridge fragility curves. The effects of different exposure conditions are also explored to assess the impact of severity of the environment on bridge seismic vulnerability. The proposed methodology is demonstrated on a representative class of aging multi-span reinforced concrete girder bridges typical of the Central and Southeastern United States. The results reveal the importance of considering multiple deterioration mechanisms, including the significance of degrading elastomeric bearings along with the corroding reinforced concrete columns, in fragility modeling of aging bridge classes. Additionally, assessment of the relative severity of exposure to marine atmospheric, marine sea-splash and deicing salts, and shows 5%, 9% and 44% reduction, respectively, in the median value bridge fragility for the complete damage state relative to the as-built pristine structure.