Abstract
Abstract. The integration between BIM (Building Information Modeling) and GIS (Geographic Information System) is currently a highly debated research topic. However, the effective integration of the two workflows in a unique information system is still an open research field, especially when dealing with Cultural Heritage (CH).The paper describes an ongoing research on the development of a web information system able to integrate BIM and GIS data, with particular focus on the analysis of the historicized city and its main buildings over time. Three main aspects, in particular, are considered more relevant: (i) conceptual data organization to integrate GIS and BIM in a single environment; (ii) integration of data belonging to different historical periods for analyses over time (4D); (iii) integration into the system of datasets already structured in pre-existing HGIS and HBIM.Most (if not all) of the attributes must be linked with both 2D and 3D entities. The system should be queryable and with the possibility to edit the information regardless of the actual focus of the current user, either if he is more BIM or GIS oriented. This is one of the main requirement for the system not to be just a simple viewer of BIM and GIS data in a unique software environment. The system can manage, from a spatial point of view, different scales of detail, allowing the connection between data from the architectural scale to the territorial one and, from a temporal point of view, data belonging to different periods. All these features have been designed to meet, in particular, the requirements of CH and realize a Historical BIM-GIS system. Besides, the web architecture allows sharing information even between actors with different digital skills, without the need for specific software installed, and ensures portability and access from mobile devices.
Highlights
The Building Information Modeling methodology is increasingly used to manage models and information in the world of Cultural Heritage, according to the widespread management process recognized as Historical BIM
Necessary to understand how HBIM models can be adequately integrated with those produced in a Geographic Information System (GIS) environment, and how the different data structures can be harmonized and made interoperable with each other, in order to create a single database (DB), to support multiscale analysis on the built heritage and the territory
The focus will be on three main aspects: (i) conceptual data organization to integrate GIS and BIM in a single environment; (ii) integration of data belonging to different historical periods for analyses over time (4D); (iii) integration into the system of datasets already structured in pre-existing HGIS and HBIM
Summary
The Building Information Modeling methodology is increasingly used to manage models and information in the world of Cultural Heritage, according to the widespread management process recognized as Historical BIM. “The concept of the integration between 3D Building Information Modelling and the 3D Geographic Information System (GIS) provides semantically rich models and allows getting benefits from both systems to help document and analyze cultural heritage sites” (Baik et al, 2015) It is, necessary to understand how HBIM models can be adequately integrated with those produced in a GIS environment, and how the different data structures can be harmonized and made interoperable with each other, in order to create a single database (DB), to support multiscale analysis on the built heritage and the territory. The purpose of the study is to investigate the conversion and management of data created as HBIM within a GIS environment, using the IFC and CityGML standards These examples show how the research interest is directed towards the integration of the different platforms (BIM and GIS) in a single solution, accessible via the web. The available datasets and the already existing HGIS will be analyzed in paragraph 3.1, the migration of this system to Chimera and results will be exposed and discussed in paragraph 3.2
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