【摘 要】
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Aiming at the shortcomings of risk analysis of single bridge or tunnel in China currently,a risk assessment model of traffic subsystem focused on the Bridge-Tunnel Transition sections(BTTs)with coupli
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Aiming at the shortcomings of risk analysis of single bridge or tunnel in China currently,a risk assessment model of traffic subsystem focused on the Bridge-Tunnel Transition sections(BTTs)with coupling effects was proposed,which is based on Bayesian network.Based upon the systematic engineering theory,this model constructed the traffic subsystem of BTTs by using the basic elements in "human-vehicle-road-environment" classical traffic system.Through analysing the risk composition of the BTTs,the risk state equation was established from the corresponding safety function.In order to solve the uncertainty of the system risk in the model analysis,the Bayesian network was introduced.The risk classifications of the example road segments were obtained by the model,and combined with relevant accident data the reliability and applicability of the model were verified.
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