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基于公路网均衡规模的概念,以二级公路作为标准等级公路,提出了等效里程和等效系数的计算方法,建立了公路网地形起伏修正系数的回归模型。分析了传统方法如国土系数法和连通度法的特点和不足,对传统的公路网均衡规模计算方法加以修正,以最小公路网发展基尼系数作为判定条件,对均衡规模区间的范围进行修正,建立了均衡规模配比的计算流程,提出了系统的公路网均衡规模确定方法,并以云南省公路网为例进行实例验证。分析结果表明:曲靖市高速公路的地形起伏修正系数最小,为1.12,迪庆州四级与等外公路的地形起伏修正系数最大,为1.92;怒江市的均衡规模里程最小,为549km,曲靖市的均衡规模里程最大,为4 753km;利用提出的方法计算的云南省公路网的人口、经济与面积的基尼系数分别为0.02、0.19、0.15,分别下降0.15、0.29、0.18,均达到绝对均衡标准。
Based on the concept of equalization of highway network and using secondary highway as a standard grade highway, a method of calculating equivalent mileage and equivalent coefficient is proposed, and a regression model of topographic correction coefficient is established. This paper analyzes the characteristics and shortcomings of traditional methods such as the national coefficient method and the connected degree method, and modifies the traditional method of calculating the equilibrium scale of the highway network. The Gini coefficient of the minimum highway network is used as the judgment condition, and the range of the equilibrium scale interval is amended to establish The calculation process of balanced scale ratio is proposed, and the method to determine the equilibrium scale of the highway network is put forward. The case of Yunnan highway network is taken as an example to verify the method. The analysis results show that the correction coefficient of the topography of Qujing expressway is the smallest, which is 1.12, and the correction coefficient of the topography of the fourth grade and extra-terrain roads of Diqing prefecture is the largest, which is 1.92. The equilibrium scale mileage of Nujiang city is the smallest, 549km, With the maximum mileage of 4 753km. The Gini coefficient of population, economy and area of Yunnan highway network calculated by the proposed method are respectively 0.02, 0.19 and 0.15, decreasing by 0.15, 0.29 and 0.18, respectively, reaching the absolute equilibrium standard .