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基于分形维数的交通路网覆盖形态特性研究

, PP. 114-158

Keywords: 交通工程,测度模型,分形维数,路网形态,覆盖度,覆盖深度

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Abstract:

为科学合理地规划区域交通路网和优化其运输结构,利用分形理论中的分形维数,对区域交通路网覆盖形态结构特性进行了分析研究和评价,提出了区域路网覆盖形态结构特性的测度模型和算法,并进行了案例分析研究,以期为区域交通路网规划及其运输结构优化提供新的思路和方法。研究结果表明用路网覆盖度和覆盖深度来测度区域交通路网覆盖形态结构特性,比通常所用的交通路网密度等指数更科学合理;覆盖度D(r)(即分形维数)1.661及其覆盖深度r可作为评判区域路网形态结构是否合理和功能是否完善的基本标准。

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