3D Accessibility Evaluation of Public Space in Three-dimensional Urban Design: A Case Study of Taikoo Place, Hong Kong

Abstract

<p>Well-designed public space is increasingly seen as crucial in achieving environmental, social and economic sustainability and public well-being. In contemporary urban society, more and more privately owned public spaces and “pseudo-public spaces” in urban complexes have emerged along with the three-dimensional urban development, and the difficulty of evaluating publicness has increased. Therefore, the conventional ways of evaluating public spaces need to be reconsidered. Although accessibility has been emphasized as the basic attribute of public space, its three dimensional visualization analysis and evaluation methods have not been applied to public space in three-dimensional urban design. By deploying 3D spatial network analysis, this study analyzes and visualizes accessibility of three-dimensional urban space. Publicness of three-dimensional urban design is evaluated with the STAR model, providing an approach to urban planning and design of public space in such urban design.<br></p>

良好的公共空间被视为实现环境、社会、经济可持续发展和公众幸福感的关键。在当代社会，越来越多的私有公共空 间和城市综合体中的“伪公共空间”伴随着立体化城市发展涌现，其公共性评价难度随之增加，需要重新审视传统的公共空间评价方法。可达性作为公共空间的基本属性，其三维可视化分析及评价方法尚未在立体化城市设计中的公共空间有所应用。本研究以香港港岛东太古坊为例，通过采用三维空间网络分析测度公共空间的可达性，对其进行可视化，并结合星形模型评估立体化城市的公共性，从而为公共空间的城市规划与设计提供支持。