基于空间相似理论的线路走向决策方法研究

合理科学的线路走向会降低工程投资、提高运输效率,使线路在路网中发挥最佳的作用。为了研究线路走向合理科学的决策方法,通过分析影响线路走向的各种因素,提取主影响因子及属性特征,利用Arc GIS的空间分析、数据处理,实现属性单元的指标值量化。根据空间多维度相似的相似度计算方法,通过空间相似理论和提取出的主影响因子,构建设计线路方案决策模型,实现基于空间相似理论的线路走向决策。并以兰州张掖城际铁路选线为例进行实证分析,得到合理的线路走向推荐方案。结果表明,该方法可应用到线路走向决策中,可为以后线路走向的选定提供参考。

Study on Decision-making Method for Route Alignment Based on Spatial Similarity Theory

Reasonable and scientific railway route alignment will reduce project investment and improve transportation efficiency, and bring railway lines into best play in the railway network.In order to study the reasonable and scientific decision-making method for route selection,main influence factors and attribute features are extracted by analyzing various factors that affect railway route alignment.And the index value of the attribute unit is quantified by means of spatial analysis and data processing of Arc GIS. According to the spatial multidimensional similarity calculation method,the decision-making model of the railway design scheme is established based on spatial similarity theory and main influence factors to realize route alignment decision-making based on spatial similarity theory. The decision-making model is applied in the route selection of Lanzhou-Zhangye intercity railway, and a reasonable recommended scheme for route alignment is obtained. The results show that the method can be applied to railway route decision-making and provide reference for future route selection.