Hazard Risk Analysis of Submerged Floating Tunnels with Fuzzy AHP

摘要

The submerged floating tunnel (SFT) is suitable for a connection method of deep and wide waterways. SFT is mainly floated by their buoyancy or supported by the columns. It is similar to floating bridges or immersed tunnels. 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). 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.