ABSTRACT

There are different processes in 3D urban land administration in which spatial analysis plays an underpinning role. Among 3D data models, Industry Foundation Class (IFC) provides the potential capabilities for modelling legal and physical dimensions of urban properties. However, performing spatial analysis using IFC files cannot address the on-demand spatial analysis requirements of 3D urban land administration. In response to this limitation, 3D data needs to be stored in a spatial database to enable spatial analyses required by different stakeholders. Therefore, in this paper, by considering spatial analysis requirements in 3D-enabled urban land administration, an IFC-based database schema is designed. Moreover, a methodology for transforming Building Information Modelling (BIM) data into the proposed schema is provided. This methodology includes seven steps: designing the architectural model and adding legal data, georeferencing, IFC data validation and cleaning, mapping process, database data validation and cleaning, spatial analysis, and visualisation. To demonstrate the feasibility of the proposed database, three datasets are implemented in the database. Moreover, a new method for modelling legal spaces with oblique structures and two applications of spatial analysis in 3D urban land administration are provided.

摘要

在3D城市土地管理中，空间分析扮演着不同的角色。在3D数据模型中，行业基础类（IFC）提供了对城市属性的法律和物理维度进行建模的潜在功能。但是，使用IFC文件执行空间分析不能满足3D城市土地管理的按需空间分析要求。响应于此限制，需要将3D数据存储在空间数据库中，以实现不同涉众所需的空间分析。因此，在本文中，通过考虑启用3D的城市土地管理中的空间分析要求，设计了基于IFC的数据库架构。此外，提供了一种用于将建筑信息模型（BIM）数据转换为建议方案的方法。该方法包括七个步骤：设计架构模型并添加法律数据，地理配准，IFC数据验证和清理，制图过程，数据库数据验证和清理，空间分析和可视化。为了证明所提出的数据库的可行性，在数据库中实现了三个数据集。此外，提供了一种使用倾斜结构建模法律空间的新方法，以及空间分析在3D城市土地管理中的两个应用。