Abstract
For preservation efforts and stability assessment of historic structures it is imperative to understand the extent of existing damages and possible modes for how they could have occurred. The aim of this work is to illustrate the importance of integrating documentation, non-destructive testing, and numerical modeling for damage assessment of heritage structures. In particular, this work explores the synthesis of these techniques on a plastered masonry wall in Palazzo Vecchio. Laser scanning was used to capture the geometry of the wall while terrestrial photogrammetry and high-resolution images were used to document the magnitude of cracking in the plaster layer. High resolution thermal images were used to document the distribution of stones and additional cracks not visible through the plaster layer. The results of documentation and non-destructive testing were used to generate an as-built model for structural analysis. Finite distinct element modeling was used to simulate the response of the wall to a series of loading conditions. By comparing the results of simulation to existing crack patterns, theories for how the damage occurred were generated.
Highlights
Adaptive reuse, rehabilitation, and renovation of existing buildings have recently had a resurgence of interest due to changing economic conditions, concern for historic preservation, space shortages, emphasis on low-carbon impact projects, etc. [1,2,3,4]
Binda et al (2011) combined structural surveying with sonic pulse velocity, radar, thermogrpahic, single and double flat jack, and dynamic investigation tests to document a historic fort damaged in an earthquake [25]; Shrestha et al (2017) combined photogrammetry, laser scanning, and ground penetrating radar to document a historic temple damaged in an earthquake [26]
A second study was carried out examining the impacts of different materials used as infill. This investigation into how different initial assumptions can alter the results of damage assessment is used as evidence for the need of integrated documentation using laser scanning and thermal imaging, and ground penetrating radar (GPR)
Summary
Rehabilitation, and renovation of existing buildings have recently had a resurgence of interest due to changing economic conditions, concern for historic preservation, space shortages, emphasis on low-carbon impact projects, etc. [1,2,3,4]. Binda et al (2011) combined structural surveying with sonic pulse velocity, radar, thermogrpahic, single and double flat jack, and dynamic investigation tests to document a historic fort damaged in an earthquake [25]; Shrestha et al (2017) combined photogrammetry, laser scanning, and ground penetrating radar to document a historic temple damaged in an earthquake [26] Both studies stated that in future workflows for preventative conservation, numerical simulations should be integrated. A second study was carried out examining the impacts of different materials used as infill This investigation into how different initial assumptions can alter the results of damage assessment is used as evidence for the need of integrated documentation using laser scanning and thermal imaging, and ground penetrating radar (GPR)
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