Abstract
Building Information Modelling is not limited to buildings. BIM technology includes civil infrastructures such as roads, dams, bridges, communications networks, water and wastewater networks and tunnels. This paper describes a novel methodology for the generation of a detailed BIM of a complex medieval bridge. The use of laser scans and images coupled with the development of algorithms able to handle irregular shapes allowed the creation of advanced parametric objects, which were assembled to obtain an accurate BIM. The lack of existing object libraries required the development of specific families for the different structural elements of the bridge. Finally, some applications aimed at assessing the stability and safety of the bridge are illustrated and discussed. The BIM of the bridge can incorporate this information towards a new “BIMonitoring” concept to preserve the geometric complexity provided by point clouds, obtaining a detailed BIM with object relationships and attributes.
Highlights
Building Information Modelling is becoming a very popular technology for several infrastructures such as utility systems, roads and rails, bridges, dams, tunnels, communications networks, water and wastewater networks, etc
The double-blind peer-review was conducted on the basis of the full paper. doi:10.5194/isprsannals-III-5-51-2016
This paper describes a procedure for BIM generation able to take into consideration the geometric complexity captured by laser * corresponding author doi:10.5194/isprsannals-III-5-51-2016
Summary
Building Information Modelling is becoming a very popular technology for several infrastructures such as utility systems, roads and rails, bridges, dams, tunnels, communications networks, water and wastewater networks, etc. It includes new bridges often characterized by variable curvature and cross sections From this point of view, the lack of powerful BIM instruments able to reconstruct complex shapes is still a major drawback in BIM projects, and the generation of accurate historic BIM (Murphy et al, 2013) surveyed from laser scanning point clouds is a challenging task which requires the development of new libraries or the implementation of new algorithms (some examples are discussed in Fai et al, 2011; Baik et al, 2015; Oreni et al, 2014; Dore et al, 2015; Quattrini et al, 2015, Barazzetti et al, 2015c). The final BIM objects are imported in the commercial package Autodesk Revit to ensure a consistent exchange of information among the different specialists involved in the project
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