城市快速路辅道交通流类热力学熵模型的研究

基于城市快速路交通流与流体的相似性,建立城市快速路交通流与流体力学概念体系的比照关系,进而运用类热力学熵及流体力学中质量守恒定理、牛顿第二定律等原理,针对城市快速路交通流进行分析,推导出城市快速路交通压力的表达式。结合城市快速路的辅道交通系统自身的特性,从热力学中选取适当的熵模型,在交通流理论中选择关键的、能够与所选取的热力学熵模型参数相对应的参数,建立快速路之辅道交通系统熵模型,为交通规划和交通系统仿真提供基本原理及理论基础。

Research on Traffic Thermodynamics Entropy Model of Urban Expressway Supporting Road

Based on the similarity of urban expressway traffic flow and fluid,the comparison relationship of urban expressway traffic flow and hydrodynamics concept system was established.Through the theories of thermodynamics entropy,mass conservation theory and Newton＇s second Law,the expression of urban expressway traffic pressure was derived from the analysis of urban expressway traffic flow.Combining with the characteristics of urban expressway auxiliary road traffic system,some key parameters were selected from the traffic flow theory in order to fit the optimized thermodynamic entropy model well.Then the auxiliary road traffic system entropy model was established to provide basic principles and theoretical basis for the traffic planning and traffic system simulation.