Study On The Seamless Transportation System Of Ro-pax Vessels Around Bohai Sea

This dissertation puts forward a new concept of comprehensive transportation: sea-land ro-pax vessels seamless transportation, which is based on the comprehensive investigations and analysis. This dissertation mainly focus on the investigations of the following aspects: the economics of sea-land ro-pax vessels seamless transportation, ship-bridge connection technique, economics of seaworthiness ship type, safety and system design.Firstly, on the basis of economics theory, cost calculation models of four different types of transportation (road-road by container, sea-road, train-train and sea-train) were developed. Preliminary calculation and analysis on economics for the four types of transportation were made.Secondly, new ship-bridge connections technology, new flexible railway and connection bridge, was put forward for better connection. Also, from the perspective of practical application, the bending deflection and the relationship between deflection and force exerted were calculated based on the theory of engineering mechanics.Thirdly, the economics of seaworthiness ship type was analyzed. A concept of railway length conversion was employed to standardize the transportation unit for the first time. The calculation and analysis on the transportation economics were made. Method of one by one substitution was employed to analyze the sensitiveness of loading ratio and cost ratio aiming to provide reference on the choice of ship type.Fourthly, based on the theory of system engineering, the causes of ship accidents were statistically analyzed. And risk analysis model of ro-ro passenger transportation were made based on FTA. For the qualitative analysis, the Minimal Cut Sets was calculated based on Semanderes, thus the poor aspects were found for the system. For the quantitative analysis, however, calculation of top event was made based on Inclusion-Exclusion principle and probability-significance and key significance for the bottom events were calculated to analyze the key factors influencing the safety of ro-ro transportation. After that, management measures to improve transportation safety were put forward.Finally, preliminary scheme of sea-land passenger and cargo seamless transportation was designed and regional seamless transportation flow and management were discussed based on the science and technology development and some related research.The possibility, economical reasonability and safety of sea-land passenger and cargo seamless transportation were approved theoretically. This dissertation can provide theory and data for the future application design and further study of the scheme, especially for the technology and management innovation.