Abstract
This paper presents an endeavour of integration of GIS (Geographical Information System) and BIM (Building Information Modelling) for indoor geovisual analytics. The merits of two types of technologies, GIS and BIM are firstly analysed in the context of indoor environment. GIS has well-developed capabilities of spatial analysis such as network analysis, while BIM has the advantages for indoor 3D modelling and dynamic simulation. This paper firstly investigates the important aspects for integrating GIS and BIM. Different data standards and formats such as the IFC (Industry Foundation Classes) and GML (Geography Markup Language) are discussed. Their merits and limitations in data transformation between GIS and BIM are analysed in terms of semantic and geometric information. An optimized approach for data exchange between GIS and BIM datasets is then proposed. After that, a strategy of using BIM for 3D indoor modelling, GIS for spatial analysis, and BIM again for visualization and dynamic simulation of the analysis results is presented. Based on the developments, this paper selects a typical problem, optimized indoor emergency evacuation, to demonstrate the integration of GIS and BIM for indoor geovisual analytics. The block Z of the Hong Kong Polytechnic University is selected as a test site. Detailed indoor and outdoor 3D models of the block Z are created using a BIM software Revit. The 3D models are transferred to a GIS software ArcGIS to carry out spatial analysis. Optimized evacuation plans considering dynamic constraints are generated based on network analysis in ArcGIS assuming there is a fire accident inside the building. The analysis results are then transferred back to BIM software for visualization and dynamic simulation. The developed methods and results are of significance to facilitate future development of GIS and BIM integrated solutions in various applications.
Highlights
The main functions for Geospatial Information System (GIS) are to capture, store, manipulate, analyse, manage, and present all types of spatial or geographical data
GIS has the advantages of the spatial analysis such as overlay analysis and network analysis, while Building Information Modelling (BIM) has the advantages of indoor 3D modelling and dynamic simulation
This paper presents an endeavour of integration of GIS and for indoor geovisual analytics
Summary
The main functions for Geospatial Information System (GIS) are to capture, store, manipulate, analyse, manage, and present all types of spatial or geographical data. It offers a novel approach to design, construction, and facility management in which a digital representation of the building process is used to facilitate the exchange and interoperability of information in digital format. BIM is beginning to change the way buildings look, the way they function, and the ways in which they are designed and built. Both GIS and BIM are creating digital representation of the real world, while in different ways and different dimensionalities. While BIM pays more attention on defined objects like buildings and on detailed indoor design which are in micro level of entities of the world. This paper presents an endeavour of integration of GIS and for indoor geovisual analytics
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