利用三维路网构建自然城市探索居住结构——以香港为例

IF 7 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Zhiyang Xiao, Zhenhan Peng, Zidong Yu, Xintao Liu
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引用次数: 0

摘要

与行政城市相比,自然城市一般是指基于不同城市设施(如兴趣点、道路网络等)的密度而产生的区域。在城市生活结构分析等城市相关研究中,自然城市的表现在一定程度上优于自然城市。然而,传统的自然城市生成方式大多局限于平面空间。香港等现代城市是垂直城市,拥有高楼大厦、3D道路网络和土地用途。因此,传统的自然城市在应用于三维城市时可能存在偏差。在这项工作中,采用香港的三维道路网络来提取真实的道路交叉口,并生成修改的自然城市,以探索城市生活结构。众多的居住结构单元分为两部分:代表自然城市的小而密集的单元和代表农村地区的大的单元。分类方法采用头尾断裂,并拟合了重尾分布的聚类算法。根据生活结构理论,对香港基于相同道路网络的拟议自然城市与传统自然城市的生活结构进行了比较。结果表明,与典型城市区域相比,改良后的自然城市区域分布更为合理。改进后的模型将更清晰地显示城市固有的生活结构,并可以分析城市的局部和整体之间的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Generating Natural Cities Using 3D Road Network to Explore Living Structure: A Case Study in Hong Kong
Compared with administrative cities, natural cities can be generally referred to as the areas generated based on the density of different urban facilities (e.g., point of interest, road network, etc.). To some extent, natural cities are outperformed in some related urban studies, such as urban living structure analysis. Nevertheless, traditional ways of generating natural cities are mostly limited to the planar space. Modern cities such as Hong Kong are vertical cities with high buildings, 3D road networks and land uses. Therefore, traditional nature cities could be biased when applied to 3D cities. In this work, a 3D road network in Hong Kong is adopted to extract true road intersections and generate modified natural cities to explore urban living structures. Numerous living structure units are classified into two parts: tiny and serried ones representing natural cities and vast ones representing rural areas. The classification method applies head/tail breaks, and a clustering algorithm was fitted for heavy-tailed distribution. According to the living structure theory, the living structures of the proposed natural cities and traditional natural cities based on the same road network in Hong Kong are compared. The findings show that the distribution of modified natural city regions is more reasonable compared with typical ones. The improved model will more clearly show the inherent living structure of the city and will allow an analysis of the relationship between the part and wholeness of the city.
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来源期刊
Smart Cities
Smart Cities Multiple-
CiteScore
11.20
自引率
6.20%
发文量
0
审稿时长
11 weeks
期刊介绍: Smart Cities (ISSN 2624-6511) provides an advanced forum for the dissemination of information on the science and technology of smart cities, publishing reviews, regular research papers (articles) and communications in all areas of research concerning smart cities. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible, with no restriction on the maximum length of the papers published so that all experimental results can be reproduced.
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