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在对山区公路交通流随机干扰特性进行分析的基础上,研究了随机干扰对交通流的影响,利用物理学中的势能理论原理,建立了适于山区公路交通流安全分析的车辆微观分析势能模型和交通流宏观分析势能模型,并建立了基于势能理论的山区公路交通流随机干扰模型。最后,通过VISSIM仿真软件模拟短时随机干扰交通流,对建立的模型进行验证。结果表明,发生随机干扰后,路段行驶速度降低,通行能力下降,随机干扰上游交通量增大明显,发生干扰后路段交通流势能增大,发生交通事件的可能性增大。验证结果与传统交通流理论得到的分析结果基本一致,说明势能理论在山区公路交通流随机干扰特性分析方面具有一定优势。
Based on the analysis of the random disturbance characteristics of mountain highway traffic flow, the influence of random disturbance on traffic flow is studied. Based on the theory of potential energy in physics, a potential energy model of micro-analysis of traffic flow for mountain highway traffic flow is established And the traffic flow macro-analysis potential energy model, and established a stochastic disturbance model of mountain highway traffic flow based on potential energy theory. Finally, VISSIM simulation software was used to simulate the short-time random disturbance traffic flow, and the established model was verified. The results show that after the random disturbance occurs, the speed of road section decreases and the traffic capacity decreases. The traffic volume increases obviously with random disturbance. After the disturbance occurs, the traffic flow potential increases and the possibility of traffic accidents increases. The verification results are basically the same as those obtained from the traditional traffic flow theory, which shows that the potential energy theory has some advantages in the analysis of random disturbance characteristics of mountain highway traffic flow.