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路径计算是交通运输规划的重要课题,阻力因子则是路径计算中的限制性因素。然而在一般应用中,路径计算并未考虑较为全面的阻力因子,导致路径计算结果不准确。本文阐述了阻力因子在路径计算中的应用现状,研究了基于层次分析法的道路阻力因子综合评价方法,设计了阻力因子指标体系,并建立了阻力因子评价模型和计算方法。以武汉城区为例,通过试验,证明了路径计算中阻力因子体系及评价方法的有效性。
Path calculation is an important issue in transportation planning. The resistance factor is the limiting factor in path calculation. However, in general applications, path computation does not consider a more comprehensive resistance factor, resulting in inaccurate path computation. This paper describes the status quo of the application of resistance factor in path computation, studies the comprehensive evaluation method of road resistance factor based on AHP, designs the index system of resistance factor, and establishes the evaluation model and calculation method of resistance factor. Taking Wuhan city as an example, this paper proves the validity of the resistance factor system and evaluation method in the path calculation through experiments.