Study On The Scheduled Bus-bridging Service And Emergent Strategy Of Bus Fare Discount Under Operation Disruptions Of The Metro System

China's rail transit started in the 1960 s, the development of the rail transit was slow at the beginning and the rail transit gave priority to war defense function. In the early 1990 s, Beijing, Shanghai, Guangzhou and other big cities have opened rail transit lines. Since the beginning of current century, China's rail transit development maintains a rapid speed. The rail transit has many advantages, it is capacious, rapid, punctual, clean, and it has become an important tool to solve the urban traffic congestion. The rail transit brings citizens convenient and comfortable transportation service, at the same time, it also often fails and operation disruptions can not only cause the operation service efficiency decline, but also the shutdown of the rail transit. So, passengers' travel will be delayed.This thesis studies the bus-bridging evacuation service for complete passengers' travel and the emergent strategy of bus fare discount under operation disruptions of the rail transit. Firstly, we systematically summarize and analyze operation disruptions of three cities about disruption types, disruption happening time, disruption duration and so on. Secondly, based on heterogeneous risk-taking behaviors of passengers, the conventional metro-bus evacuation equilibrium model is established and passengers' evacuation behaviors are also analyzed. Thirdly, the thesis deeply researches the effect of bus fare discount to the original equilibrium and determines optimal bus fare discount strategies for two different targets. Finally, the No. 2 line of Wuhan rail transit is studied as an example that totally has 21 stations.210 O-D pairs are created through the way of mutual combination between 21 stations. The case study indicates that the model and related theoretical researches are strongly feasible and applicable.