Discuss Some Related Problems Of Public Transport Operation For Intercity Dedicated Passenenger Line

With the development of the regional economy and the rapid growth of passenger traffic, the mass transit type periodic system is the main direction of the development of the intercity passenger dedicated line. The mass transit type periodic system has the advantages such as running faster and shorter departure interval, which adapts to the demand for short-haul passenger market and comforts passenger as well as facilitates travel.In this thesis, the specific research work is as follows:1. Firstly, the intercity passenger dedicated line of the straight type was defined as the research object and the difference between it and the passenger dedicated line of the channel type as well as the urban rail transport was analyzed. And then the concept of the mass transit type periodic was defined, which overcome the shortcomings of only qualitatively description in the previous studies and strictly limited the departure interval in mass transit type periodic system. Therefore, it laid the foundation for subsequent quantitative calculations. In addition, the influencing factors of the transport operation in mass transit type periodic were analyzed, where passenger traffic was the basis and equipment and organization management were the guaranty. Lastly, based on the configuration of the multiple unit, fare collection system, in-out channel and the transfer channel, the number of the arrival-departure line, the automatic train control and the passenger service system, the device conditions to realize the intercity passenger dedicated line operated like the mass transit type periodic system were analyzed.2. The four possible organization models of the intercity dedicated passenger railway were analyzed in details, and the transport organization mode used by the mass transit type periodic system was determined by analyzing and comparing. Focus on the characteristics of the operation scheme of the mass transit type periodic system, from the perspectives of Train routing、operation scheme、Stop scheme, the logarithmic calculation method of operation scheme based on the largest passenger flow cross-section is given to establish the stop scheme optimization model to minimize the total stops.3. Combination of the needs of the mass transit type periodic system and the characteristics of the periodic train work diagram, the concept of the mass transit type periodic train running was proposed. According to the operation pairs in the peak hours, the unit periodic train work diagram as well as the aperiodic train work diagram in lower individual traffic flow was drawn, and the operation diagram of the whole day was formed after joining these two diagrams. In the analysis of the factors of the train work diagram, the characteristics such as the train track short intervals of the mass transit type periodic train were particularly focused on. In order to ensure safety, the various calculation methods of the tracking interval based on quasi-moving block were studied on.4. The optimization model of the periodic train work diagram based on the periodic event planning was established in which the travel time and the number of the EMU are the optimization objectives. The algorithm to solve the model used the phased optimization ideas. Firstly according to the division of the period, the saturation period was determined and initially distributed to solve to meet the minimum of the travel time of the unit periodic train work diagram. Considering the tabular method used in solving the problem of locomotive working, whether the cross-road program was optimal was repeatedly checked. If it was not optimal, the key running lines was searched for and constantly adjusted the distribution program which was taken into the optimization model to loop computing until the cross-road program was the best.