Diagnostic analysis of the lesions and stability of Michelangelo's David

Mutual seismic assessment and isolation of different art objects

“…The most performing solutions were obtained by adapting to art objects the base isolation techniques devised for the advanced seismic protection of buildings and bridges [3][4][5][6][7][8][9][10][11]. Several applications are currently noticed worldwide [12], a mutual characteristic of which is represented by the separate isolation of each single artefact, even when various objects are exhibited in the same place (e.g., in museum halls, art galleries, etc).…”

Modelling of Rocking and Sliding Effects in the Seismic Analysis of a Free-Standing Column

“…However, although meeting the desired stability requirements, base-fixing strategies imply that the seismic accelerations occurring at the base of the objects are fully transmitted to them. This causes severe damages at the BDE and MCE levels, even leading to strength-related (instead of overturning-induced) collapses, especially in artworks made of low tensile strength materials (Borri and Grazini, 2006;Sorace and Terenzi, 2015). An effective alternative installation strategy, increasingly investigated and applied during the last decade, is represented by seismic isolation, either of single objects (Contento and Di Egidio, 2009;Vassiliou and Makris, 2012;Chiozzi et al, 2016) or of groups of artefacts placed on the same floor (Sorace and Terenzi, 2015).…”

“…The position of the centre of mass, G, is shown in the drawing on the right in Figure 4, where hG=1190 mm is the height of G from the base section and bG=150 mm is the distance of the vertical projection of G from the nearest side of the base section in plan. A rocking-sliding model corresponding to the basic analytical and numerical simulation of the dynamic phenomenon (Shenton and Jones, 1991;Makris and Cameron, 2001;Caliò and Marletta, 2003;Borri and Grazini, 2006;Sorace and Terenzi, 2007;Baratta and Corbi, 2012;Chatzis and Smyth, 2012;Voyagaki et al 2013) was implemented for the development of the time-history analyses. As detailed in Figure 5, within this model rocking is simulated by means of a set of vertical "gap" (no-tension) interface elements linking the joints of the bottom section of the pedestal to the ground.…”

Horizontal Load Resistance of Ruined Walls, Case Study of a Hungarian Castle with the Aid of Laser

“…The amount of the required reinforcement can be defined just by the good understanding of the structure, which may start with the proper survey of the building. A really edifying research that investigated Michelangelo's David statue [1] found that the former reinforcement of the masterpiece caused big part of the cracks at the ankle of the body. This reveals that without the deep understanding of the behavior the best preserving aim can be even harmful.…”