Study On The Train Operation Scheme Of Passenger Dedicated Line Net

In order to meet the rapidly growing demand for passenger transport, China has planned to build "four vertical and four horizontal" Passenger Dedicated Lines Net (PDLN) and intercity railway in developed and densely populated areas which like Passenger Dedicated Lines(PDL) in Bo Hai Coastal Region, PDL in Pearl River Delta region, PDL along ChengDu-MianYang-EMei and so on. Meanwhile, China is gradually strengthening high-speed rail backbone network planning, efforts to open up the international high-speed railway to Europe, Southeast Asia. At present, China has basically formed a sound PDLN. While high-quality train operation plan will help the company to improve the efficient of using PDLN infrastructure and increasing traffic on the network, and give prominence to the advantages of PDLN. Therefore, it has a very important practical significance to formulate a train plan which is scientific, rational, economical and efficient. Based on these, this study includes:Firstly, this paper analyzed the status and functions of city notes in the PDLN, then determines the factors which affect the importance of city nodes. Based on this, this paper selected a part of the real PDLN in China as example, and calculated the importance of city nodes in this PDLN by AHP. According to the importance of city nodes. It divided all the city nodes into four grades and selected the transfer nodes. It calls "class 1" and "class 2" city nodes assembly station, "class 3" and "class 4" city nodes non-assembly station.Secondly, it considered to study the train operation plan in the mode transfer, and designed the method of merging passenger. Based on the aforementioned PDLN in example, it merged the passengers of non-assembly station to assembly station (first time of merging passengers).Thirdly, it established a multi-path traffic assignment model based on the theory of static traffic distribution theory, and designed the algorithm for this model. Based on this model and algorithm, it allocated the passengers to the PDLN, and identified the transport pathways for passenger. Then it identified the key transfer nodes and passengers which passed the key transfer nodes will be merged (second time of merging passengers).Forth, under the premise of OD flows have been merged and pathways have been identified, it determined the running section and logarithmic of trains. To the passengers which between assembly station, a multi-objective model which aimed at minimizing generalized travel costs of passengers and the costs of empty train traveled was built. And algorithm which based on GA was designed to solve this model. To the passengers of non-assembly station, a train stop-schedule plan was determined between adjacent assembly stations. Train operation plan for the above-mentioned PDLN was formulated by solving this model, and verified the validity of the model and algorithm...