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- 저자 : 배용귀(Bae Yong Gwi) (검색결과 28 건)
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배용귀 ( Bae Yong-gwi ),이성로 ( Lee Seong-lo ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.1
A ship collision analysis by finite element method is performed considering the effects of mass and speed of ship and material and shape of structures to analyze the dynamic characteristics by ship collision. From this analysis, collision load-time history and damage of ship and structures are obtained. In this study, results of unite element analysis are compared with previous studies in USA, Japan and some countries of Europe. Dynamic characteristics are different from each other according to interaction between ship and structures. It seems that there are lots of factor to have effects on the snip-structures interaction. But because little information is available on the behavior of the inelastic deformation of materials and structures during the type of dynamic impacts associated with vessel impact, assumptions based on experience and sound engineering practice should be substituted. Therefore more researches on the interaction between ship and structures are required.
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배용귀(Bae Yong-Gwi),이성로(Lee Seong-Lo) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.- No.-
A ship collision analysis by finite element method is performed considering the effects of mass and speed of ship and material and shape of structures to analyze the dynamic characteristics by ship collision. From this analysis, collision load-time history and damage of ship and structures are obtained. In this study, results of finite element analysis are compared with previous studies in USA, Japan and some countries of Europe. Dynamic characteristics are different from each other according to interaction between ship and structures. It seems that there are lots of factor to have effects on the ship.structures interaction. But because little information is available on the behavior of the inelastic deformation of materials and structures during the type of dynamic impacts associated with vessel impact. assumptions based on experience and sound engineering practice should be substituted. Therefore more researches on the interaction between ship and structures are required.
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배용귀(Bae Yong Gwi),이성로(Lee Seong Lo) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.1
The ship collision analysis of steel pile group as protection system of bridge in navigable waterways is performed to analyze the dynamic characteristics of that during ship-protection system collision. The analysis encompasses finite element modeling of ship and pile, modeling of material nonlinearity, hard impact analysis, displacement-based analysis and soft impact analysis etc. Through the analysis of hard impact with a rigid wall it is able to grasp collision load, displacement, etc, depending upon collision type of ship bow and to inspect validity of ship model. In the displacement based analysis it is able to confirm the part that plastic hinge is generated and to estimate a rough range of energy that protection system can absorb within its maximum horizontal clearance. In the actual collision analysis it is able to know dynamic behavior and energy dissipation mechanism caused by interaction between ship and protection structure.
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배용귀(Bae Yong Gwi),이성로(Lee Seung Lo) 대한토목학회 2008 대한토목학회논문집 A Vol.28 No.3A
선박과 방호구조물 충돌시 구조물의 동적 특성들을 분석하기 위하여 항로상에 위치한 교량의 방호구조물인 강관파일그룹에 대한 선박충돌해석을 수행하였다. 해석은 선박과 파일의 유한요소 모델링, 비선형성 재료의 모델링, 강성충돌해석, 변위기 반해석 그리고 충돌시나리오에 대한 연성충돌해석 등을 포함하고 있다. 강체벽에 대한 강성충돌해석을 통하여, 선수부의 충돌유형에 따른 충돌하중을 산정하였다. 변위기반 해석에서 방호시스템이 최대 수평 이격거리 내에서 흡수할 수 있는 대략적인 에너지의 범위를 산정할 수 있었다. 충돌시나리오별 연성충돌해석에서는 충돌시 거동을 방호시스템 설계를 고려하면서 검토하였다. 파일지지구조물의 에너지소산 메카니즘 분석을 통해 방호구조물의 최적 설계를 도출할 수 있다. The ship collision analysis of steel pile group as protection system of bridge in navigable waterways was performed to analyze the structural characteristics of protective structure during ship collision. The analysis encompassed finite element modeling of ship and pile, modeling of material non-linearity, hard impact analysis, displacement-based analysis and soft impact analysis for collision scenarios. Through the analysis of hard impact with a rigid wall, impact load for each collision type of ship bow was estimated. In the displacement-based analysis the estimate of energy which protection system can absorb within its maximum horizontal clearance so as to secure bridge pier from vessel contact during collision was performed. Soft impact analysis for various collision scenarios was conducted and the collision behaviors of vessel and pile-supported protection system were reviewed for the design of protection system. The understanding of the energy dissipation mechanism of pile supported structure and colliding vessel would give us the optimized design of protective structure.
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배용귀 ( Bae Yong Gwi ),이성로 ( Lee Seong Lo ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
The ship collision analysis of steel pile group as protection system of bridge in navigable waterways is performed to analyze the dynamic characteristics of that during ship-protection system collision. The analysis encompasses finite element modeling of ship and pile, modeling of material nonlinearity, hard impact analysis, displacement-based analysis and soft impact analysis etc. Through the analysis of hard impact with a rigid wall it is able to grasp collision load, displacement, etc, depending upon collision type of ship bow and to inspect validity of ship model. In the displacement based analysis it is able to confirm the part that plastic hinge is generated and to estimate a rough range of energy that protection system can absorb within its maximum horizontal clearance. In the actual collision analysis it is able to know dynamic behavior and energy dissipation mechanism caused by interaction between ship and protection structure.
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배용귀(Bae Yong Gwi),한광문(Han Gwan Mun),이성로(Lee Seong Lo) 한국구조물진단유지관리학회 2007 한국구조물진단학회 학술발표회논문집 Vol.11 No.1
In this study, nonlinear finite element analysis is carried out to investigate the dynamic characteristics and failure behavior of barge colliding with bridge pier. Using typical barges presented at Guide Specification and Commentary for Vessel Collision Design of Highway Bridges, the equivalent static impact load, damage length of bow and collision energy are obtained and reviewed. Modeling techniques of barge for collision analysis are introduced and numerical analysis results are compared.
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배용귀(Bae Yong Gwi),한관문(Han Gwan Mun),이성로(Lee Seong Lo) 대한토목학회 2008 대한토목학회논문집 A Vol.28 No.2A
본 연구에서는 광양-묘도 지역의 평균풍속을 추정하기 위하여, 일별 최대 풍속과 해당 방향에 대한 결합분포확률의 통계학적 해석에 극한값 확률분포 모델이 사용되었다. 이를 위하여, 교량 가설지점 인근의 기상관측소에 대한 일별 최대풍속 및 해당풍향의 데이터로부터 각각의 관측소에 대한 일별 최대기록의 빈도를 조사하였으며, 16방위 및 전방위에 대한 년 최대풍속의 표본을 추출하였다. 이러한 풍속기록은 Gumbel 및 Weibull 분포모델에 적용하였으며, 모멘트방법 및 최소제곱법 등을 통해 모수를 추정하였다. 또한, PPCC 검사를 통해 분포모델 및 모수의 적합 여부를 검사하였다. 적합 여부가 판단된 모수로부터, 해당 관측소별로 데이터의 표본 크기 및 교량 가설지점으로부터의 거리에 대한 요소를 고려하여 16방위 및 전방위에 대한 년 최대풍속을 추정하였다. In order to estimate mean wind speed in the Gwangyang-Myodo Region, the probability distribution model of extreme values has been used in the statistical analysis of joint distribution probability of daily maximum wind speed and corresponding direction in this paper. For this purpose frequency of daily maximum records at respective stations is inquired into and sample of largest yearly wind speed of sixteen compass direction and non-direction is extracted from daily data of maximum wind speed and appropriate direction of the meteorological observing stations nearby the bridge construction site. These extreme speed records are applied to Gumbel and Weibull distribution model and parameters are estimated through method of moment and method of least squares etc. And also, distribution and parameters are inquired into whether it is fitted through the probability plot correlation coefficient examination. From fitted parameters the largest yearly wind speed of sixteen compass direction and non-direction is extrapolated taking into account factors regarding sample size of data and distance from the bridge construction site according to the appropriate stations.
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소형선박충돌에 의한 독립수직파일 방호구조물의 구조특성분석
배용귀(Bae Yong Gwi),이성로(Lee Seong Lo) 대한토목학회 2007 대한토목학회논문집 A Vol.27 No.2A
방호구조물에 대한 선박충돌시 선박의 종류나 파일의 특성에 따라 작용하거나 소산되는 충돌에너지의 범위가 달라지며, 이는 설계에 중요한 요인이 된다. 본 연구에서는 충돌해석을 위한 준비작업으로 선박의 강체벽에 대한 충돌해석을 수행하였으며, 해석결과를 AASHTO 및 EUROCODE의 충돌경험식과 비교하였다. 또한, 파일에 대한 변위기반의 해석을 수행하여 파일이 흡수할 수 있는 대략적인 에너지의 범위를 산정하였다. 이러한 해석을 통하여 독립수직파일의 거동과 에너지 소산 메커니즘을 알 수 있었다. 선박의 충격과 관련된 동적충격이 가해지는 동안의 재료와 구조물에 있어서의 비탄성거동에 대해서는 극히 미비한 정도의 정보만이 가용하기 때문에, 경험과 올바른 공학적 판단에 기반한 가정들을 사용하여야 한다. 따라서 선박과 구조물의 상호작용에 대한 보다 많은 연구가 필요하다. In the ship collision with protection system, a range of working or dissipated collision energy is different from a kind of ship or property of pile, and it becomes an important factor in design. In this study, ship collision analysis with rigid wall is performed as preparatory work for collision analysis and its result is compared with empirical formula of AASHTO and EUROCODE. Also, a range of energy that protection system is able to absorb is roughly estimated by performance displacement based analysis for pile. From this analysis, behaviors of single standing pile and energy dissipation mechanism by impact position are known. Because little information is available on the behavior of the inelastic deformation of materials and structures during the type of dynamic impacts associated with vessel impact, assumptions based on experience and sound engineering practice should be substituted. Therefore more researches on the interaction between ship and structures are required.
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