Study On Station Layout And Operating Coordination Between Rail Transit And Bus Transit

With the rapid development of China's economy,the urban population and the number of motor vehicles continue to increase,resulting in the increasingly serious traffic congestion in the city.Public transport can alleviate urban traffic,improve the urban passenger transport environment,meet the traffic demand,so developing public transport has become the main theme of urban development.The two major operators of rail transit and conventional bus seat urban passenger transport system can not only realize the complementary advantages of rail transit and conventional bus,but also provide passengers with a variety of transportation options to improve the overall competitiveness of the public transport system,thus optimizing the residents' travel structure and overall urban layout.This paper aims to optimize the public transport environment by studying the integration of rail transit and conventional bus.The main research contents include:(1)Optimize the site position of the rail transit line which direction fixed.Innovative put forward to travel(the ratio of the ratio of passenger travel efficiency and the construction of enterprise operation cost)the highest as the optimization goal,with average passenger travel time and travel range as constraint conditions,establish the optimization model to determine the optimum station spacing,using fuzzy analytic hierarchy process(AHP)to determine the optimal site location.Take the Beijing subway line 17 as an example for the site selection.(2)Optimize the location of bus stations in the surrounding areas of rail transit stations.The bus stops within the reasonable transfer range around the rail transit site are selected,and the transfer OD between them and the conventional bus stations is considered for optimization.Using genetic algorithm to optimize a site location setting.Taking dongzhimen station as an example,the regional bus station was optimized,and the total transfer distance in the optimized area was reduced by 35%.(3)The two-layer planning model is established,with the upper layer model with the minimum total cost of the system as the target,and the interval parameters of the vehicle are entered for the lower model;Based on the optimal travel strategy,the low-level passenger flow distribution model is established,and the passenger flow parameters are input to the upper model.The optimal departure interval is solved to realize the coordinated operation of the two modes of transportation.Taking Shijiazhuang rail transit and regular bus as an example to optimize the operation,the total cost of the optimized system was reduced by 12.88%.