선박충돌 문제에 대한 해상교량의 유지관리

배용귀,이성로 한국구조물진단유지관리공학회 2016 한국구조물진단유지관리공학회 논문집 Vol.20 No.6

해상교량의 선박충돌 문제는 기본적으로 선박의 충격력에 의한 부가 하중의 빈도를 추정하는 것이므로 특정한 수용 기준을 만족하 도록 설계하는 것도 중요하지만 공용기간동안 이러한 충돌 위험의 증가분을 어떻게 유지관리 해야 하는지도 매우 중요하다. 본 논문에서는 인 천대교를 대상으로 선박충돌 문제에 대한 중간점검을 위하여 관련 계획, 주경간장, 형하고 및 충돌 위험도를 검토하였다. 특히, 충돌 위험의 증 가분에 대하여 근시적인 해결방안으로 관련 연구결과 및 운항관련 지침 등을 검토하여 최적화된 운항 속도를 8노트로 제시하였으며, 근본적인 해결방안으로 설계 단계에서 대상선박 및 통행량의 합리적인 예측을 위한 기본 절차를 수립하고 예측의 불확실성을 수용할 수 있는 확률론적 예측 기법을 제안하였다. 향후 선박충돌 관련 유지관리에 대한 추가적인 연구와 공용중인 다른 해상교량의 즉각적인 중간점검이 필요할 것으 로 판단된다. Damage of sea-crossing bridge by ship collision is related to estimate frequencies of overloading due to impact, and bridge accordingly must be designed to satisfy related acceptance criteria. Another important aspect is the management on increment of collision risk during the service period. In this study, related plan, main span length, air draft clearance and collision risk are analyzed for the interim assessment of Incheon Bridge focusing on the ship collision problem. In particular, for the increment of collision risk, the optimized navigation speed is proposed by reviewing the research findings and navigation guidelines etc. as a temporary expedient. Also basic procedure for reasonable prediction of target vessel and passage is established and probabilistic prediction method to embrace the uncertainty of the prediction is proposed as a fundamental solution. It is necessary to conduct further research on collision risk management and promptly carry out interim assessments of other marine bridges.

해상교량에 대한 선박충돌 위험도 평가 및 민감도 분석

배용귀,이성로,Bae, Yong Gwi,Lee, Seong Lo 대한토목학회 2013 대한토목학회논문집 Vol.33 No.5

본해상교량 프로젝트의 설계단계에서 선박충돌 문제는 주로 교량 하부구조의 단면 결정에 관여하게 되며, 위험도 평가와 충돌 시뮬레이션 등을 통해 설계를 수행하게 된다. 선박의 충돌위험은 다양한 확률모델에 의해 평가되며 대체로 AASHTO Guide(2009)의 Method II와 유사하다. 그러나 해당기준에서 사용되는 일부 요소는 내륙수로에 국한되어 있거나 지역적인 요인이 강하여 설계자의 판단이 요구되므로 관련 기준이나 연구결과 등을 참고하여 결정해야 한다. 본 연구에서는 2010년 선박운항데이터를 사용하여 인천대교에 대한 위험도평가를 수행하고 기존 하부구조 및 방호구조물에 대한 위험도 및 내충돌 성능을 검토하였다. 그리고 AASHTO Guide의 Method II를 기준으로 하여 위험도평가에 필요한 요소들의 추정 방법과 적용 사례, 관련 연구결과에 대한 고찰을 수행하였다. 이로부터 위험도평가에 필요한 요소들의 적절한 가변영역을 정의하고 해당 구간에 대한 민감도 분석을 수행하였으며 설계단계에서 설계자가 주의하여 적용해야 하거나 지역적인 데이터의 직접 분석이 필요한 요소들이 확인되었다. 이번 연구는 해상교량에 대한 선박충돌을 고려한 설계시 위험도 분석과 관련하여 기본적인 참고자료가 될 것으로 판단된다. In the design phase of sea-crossing bridge projects, ship collision problem is mostly participated in decision of substructure section and it would be performed by risk assessment and impact simulations. Ship collision risk is assessed by probability model which is similar to method II of Guide Specification and Commentary for Vessel Collision Design of Highway Bridge(AASHTO, 2009). However, several factors used in the applicable code are limited to inland waterways or have many local characteristics. Accordingly, it should be needed judgement of engineer or referred to related criteria, research finding. In this study risk assessment for In-cheon bridge and review of existing substructure's impact risk and resistance capacity are performed using the 2010's ship passage data. And then consideration regarding to presumption and applied instance of factors needed for risk assessment and related research findings are performed on the basis of AASHTO Guide's Method. As a result of study, adequate variable region of factors needed for risk assessment is defined and sensitivity analysis for appropriate region is performed. Consequently, factors that should be applied carefully or needed for direct analysis of local data are confirmed. This research could be fundamental material to risk assessment related to design for sea-crossing bridge taken into account ship collision.

강관파일그룹의 선박충돌해석

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.

바지선의 충돌해석

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.

벽체 및 방충재의 선박충돌 해석

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.

강관파일그룹의 선박충돌해석

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.

지진 데이터 생성 및 격납건물 시간이력 해석

배용귀(Bae, Yong Gwi),이성로(Lee, Seong Lo) 한국콘크리트학회 2003 한국콘크리트학회 학술대회 논문집 Vol.2003 No.11

바지선의 충돌해석

배용귀 ( Bae Yong Gwi ),한관문 ( Han Gwan Mun ),이성로 ( Lee Seong Lo ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1

파일지지 구조물의 선박 충돌거동에 대한 해석

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.

강관파일그룹의 충돌시나리오 해석

배용귀(Bae Yong Gwi),이성로(Lee Seong Lo) 대한토목학회 2006 대한토목학회 학술대회 Vol.2006 No.10