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道路选线是城市规划设计的重要内容。文章在梳理概括当前道路选线前沿技术的基础上,分析了基于GIS建立山地道路选线模型的优势与弊端,指出在山地城市详细规划阶段进行道路选线时面临因子量化依据不足、权重判定科学性不高等难点,提出了建立多因子叠加分析选线模型的基本思路。通过实际案例,文章首先探究了GIS的数据提取、栅格转化、空间分析功能以及单因子分析原理与标准量化原则,然后引入AHP建立选线因子体系与矩阵,并根据权重判定的方法,建立案例选线因子影响评价总图。基于此,全文探索了基于GIS与AHP多因子空间量化进行道路选线模型优化的方法,力求建立更完善、系统、科学的道路选线模型。
Road alignment is an important part of urban planning and design. On the basis of summarizing the current cutting-edge technology of road alignment, this paper analyzes the advantages and disadvantages of establishing a mountain route alignment model based on GIS. It points out that in the detailed planning stage of mountain cities, Sexual high difficulty, put forward the basic idea of establishing multi-factor superposition analysis line selection model. Through the actual case, the article first explores the data extraction, grid transformation, spatial analysis function and the principle of single factor analysis and standard quantification of GIS, and then introduces the AHP to establish the line selection factor system and matrix, and establishes the case based on the weight judgment Line selection factor impact assessment of the total map. Based on this, the paper explores the optimization method of road alignment model based on GIS and AHP multi-factor spatial quantization, and tries to establish a more perfect, systematic and scientific road route selection model.