Risk Assessment of Submerged Floating Tunnels based on Fuzzy AHP

퍼지 AHP를 이용한 수중터널의 재해위험도 분석

  • Han, Sang-Hun (Division of coastal development & ocean energy research, KIOST)
  • 한상훈 (한국해양과학기술원 연안개발.에너지연구부)
  • Received : 2012.03.30
  • Accepted : 2012.07.12
  • Published : 2012.07.31


In the construction and operation of large marine structure, hazard risk analysis is one of important factors. Therefore, this paper investigates the hazard risk indexes and evaluates the risk level in the construction and operation of SFT on the basis of expert survey and Fuzzy analytic hierarchy process. Hazard risk is divided into natural hazard risk (earthquake, typhoon, tsunami, and ice collision) and human factor hazard risk (fire, explosion, traffic accident, ship or submarine collision). Also, the influence of hazard risk indexes on SFT was evaluated in tunnel tube, supporting system, ventilation tower, foundation, and connection part. As the hazard risk level of SFT is compared with those of bridge, underwater tunnel, and immersed tunnel, the intrinsic risk level of SFT was evaluated. Tsunami and earthquake had higher risk level in natural hazard risk, and the risk levels of fire and explosion were higher in human factor hazard risk. Hazard risk level of SFT was 1.4 times higher than immersed tunnel, and 3.2 times higher than bridge.


Submerged floating tunnel;Hazard risk;AHP;Quantification


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