Research Of Synthesis Impedance Function

Along with the development of economy, the characteristic of people going on a journey has appeared the diversification. Thus, it influences the distributing problem of transportation network. Among in the various traffic distributing models, impedance takes the decisiveness effect. The method of gaining impedance and the level of its reality directly influences reasonable distributing. So impedance is an important factor to traffic distributing.The research about impedance function usually thinks about only one factor in the home and abroad. For example, American federation highway bureau impedance model has only been thought over the influence of motor vehicle traffic load, and this is not being identical with the real appearance very much. Thinking over many kinds of factors, and constructing reasonable impedance function takes the decisiveness effect to reasonable traffic distribution.First, the paper describes the traffic distributing problem, including meaning and the model of traffic distribution and so on. Among the traffic distributing models, the paper describes the common models and their characters. Then, the paper describes the common impedance function.Then, based on investigating the paper describes the society economy and transportation of delta of the Pearl River district. At the same time it also analysis the characteristics of transportation network and the characteristics of people going on a journey. It is the foundation of building the model of synthetical impedance function in.Finally, based on the existing correlation study achievements, investigation of O-D's in delta of the Pearl River district and multitudinous traffics distribution as well as feasible research etc, analyzing the various characteristics of people going on a journey, thinking over the various influence of people going on a journey, the paper puts forward the conception of synthetical impedance function and builds the synthetical impedance function which is adapt to the district developing flourish, and combines O-D's investigation data to carry on the parameter fit. Each factor in the model is summed up to the cost problem. Apply the model in Calculation of the track traffic flow on Guangzhou - Shenzhen city border, and to analysis the model and appraising.Innovation of the paper breakthrough the scope of factors thought over...