Abstract
Abstract. The paper proposes an approach for defining a generative modelling process of complex objects and their sharing. The case study is the Stronghold of Arquata del Tronto, a monument of extraordinary historical, cultural and landscape value, damaged by the earthquake in 2016. The first step has been data acquisition on a geometrical level, through laser scanner and UAV photogrammetry, and on a historical level, through archival research to understand construction phases and transformations. The Stronghold was probably built between the 11 and the 12th century on a hill to control the territory. It underwent several transformations and neglection phases over the centuries. The second phase has been the generative modelling following the scan-to-BIM approach. The three-dimensional model is intended to support the design phases, from preliminary analysis to the construction site.For this reason, the Stronghold has been modelled with different Grade of Generation (GOG). The study of the eastern curtain wall, where the signs suffered by the structure due to the earthquake are most evident, was deepened through a Building Archaeology preliminary analysis. The third phase aimed at orienting the HBIM towards three digital information-sharing solutions such as Common Data Environment (CDE), and Virtual Reality (VR) to enhance the cultural and historical values, supporting the reopening of the Stronghold as a venue for conferences and exhibitions.
Highlights
The growing use of information models requires the definition of criteria for their sharing
Thanks to the integrated use of laser scanners, total station and photogrammetry it was possible to define an environment characterised by many point clouds able to describe through points the internal and external geometry of the Stronghold
The generation of the HBIM envisaged the use of different Grades of Generation (GOG) and Accuracy (GOA) with the primary objective of returning the digital representation of the building depending on the purposes of the research
Summary
The growing use of information models requires the definition of criteria for their sharing. Thanks to the integrated use of nonuniform rational basis-splines (NURBS) modelling and scan-toBIM requirements, it was possible to achieve different levels of complex geometry, attributing a reference value to each recreated object capable of communicating its reliability from a morphological point of view (Brumana et al, 2021).
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