摘要
研究旨在对常见路网模式进行分类探索,并进行定量分析和系统化研究,从而实现对树状路网结构特征的精确描述。对树状路网结构特征加以分析,构建5种简化的路网模式,并以一系列相关参数、T型交叉口比率和尽端路比率等分别对不同的路网模式形态特征和功能进行描述。结合Depthmap和GIS等现代计算机辅助分析技术,系统地比较中国不同城市道路网络结构变量指标(连接性、深度和层次结构等),确定一组可以显示网络功能和特征如何随着网络类型而变化的解释性参数。研究表明:①一些路网在平面结构上具有网状特性,但在拓扑结构上符合树状路网的本质特征;②网格形路网和树形路网的结构特征可以通过贯通性道路比率、尽端路比率和T型交叉口比率等指标区分;③混合路网根据树状特征可以至少划分为3种模式,这些模式在土地利用和慢行交通等方面具有不同的特征和优势。
The research aims to classify and explore the common road network modes, and carry out quantitative analysis and systematic research to realize the accurate description of the dendritic network structure features. Firstly, the structural characteristics of the dendritic network are analyzed, and then five simplified road network modes are constructed. Depending on a series of related parameters, such as T-intersection ratio, cul-de-sac ratio, etc., the morphological features and functions of different road network modes are described separately. Meanwhile, combined with modern computer-aided analysis techniques such as Depthmap and GIS, a set of variables values(included the connectivity, the depth, the hierarchy ratio, and so on.) are systematically compared, which came from the different cities in China. Consequently, a set of explanatory parameters are built to explain how network function and feature vary with network types various. The results of this study are listed as follows: ①Although a few road network models with grid-like network characteristic have obvious characteristic of hierarchical development in the topological structure, which is support the essence feature of dendritic network;②The structural characteristics of the grid-shaped road network and the tree-shaped road network can be distinguished by indicators such as road-though ratio, cul-de-sac ratio and T-intersection ratio;③Mixed-pattern road networks have at least more than 3 modes from the basic patterns of network which have different characteristics on land-use, non-motorized traffic, accessabilities, etc.
作者
于晓妹
韩宝睿
翟江苏
YU Xiaomei;HAN Baorui;ZHAI Jiangsu(College of Automobile and Traffic Engineering,Nanjing Forestry University,Nanjing 210037,China)
出处
《森林工程》
2020年第1期78-86,95,共10页
Forest Engineering
基金
住建部2017科技计划项目(2017-K2-004)
关键词
树状路网
层次衔接
T型交叉口比率
尽端路比率
空间句法
Dendritic network
hierarchical cohesion
T-intersection ratio
cul-de-sac ratio
space syntax
