Abstract
This paper reports the knowledge process and the analyses performed to assess the seismic behavior of a heritage masonry building. The case study is a three-story masonry building that was the house of the Renaissance architect and painter Giorgio Vasari (the Vasari’s House museum). An interdisciplinary approach was adopted, following the Italian “Guidelines for the assessment and mitigation of the seismic risk of the cultural heritage”. This document proposes a methodology of investigation and analysis based on three evaluation levels (EL1, analysis at territorial level; EL2, local analysis and EL3, global analysis), according to an increasing level of knowledge on the building. A comprehensive knowledge process, composed by a 3D survey by Terrestrial Laser Scanning (TLS) and experimental in situ tests, allowed us to identify the basic structural geometry and to assess the value of mechanical parameters subsequently needed to perform a reliable structural assessment. The museum represents a typology of masonry building extremely diffused in the Italian territory, and the assessment of its seismic behavior was performed by investigating its global behavior through the EL1 and the EL3 analyses.
Highlights
The dynamic response of ancient masonry buildings under seismic loads differs substantially from that of recent masonry constructions who are designed according to specific aseismic rules and recommendations
Methods based on an interdisciplinary approach in which local and global analyses are performed have been proposed. This is the case of the Italian technical document “Guidelines for the assessment and mitigation of the seismic risk of the cultural heritage” [8] that proposes a methodology based on three different levels of evaluation, according to an increasing knowledge of the structure
Data of the first and the last parts of the record, since they can be affected by errors, reLaboratory Drilling Resistance Measurement System (DRMS) and compressive tests were lated to the local conditions ofcalibrate the mortar and to theSome presence of are thereported drilling dust performed on a external sample mortar (Sm) to the procedure
Summary
The dynamic response of ancient masonry buildings under seismic loads differs substantially from that of recent masonry constructions who are designed according to specific aseismic rules and recommendations. Methods based on an interdisciplinary approach in which local and global analyses are performed have been proposed This is the case of the Italian technical document “Guidelines for the assessment and mitigation of the seismic risk of the cultural heritage” [8] that proposes a methodology based on three different levels of evaluation, according to an increasing knowledge of the structure. If compared with modern constructions, the definition of a numerical model of heritage and ancient buildings need more information including a detailed and in-depth investigation process For these reasons, the model reliability is strictly connected with the knowledge level and the available data. The adopted survey procedure is discussed with the aim of highlighting several peculiarities of the case study that are recurrent in similar historic structures and that play a significant role in the seismic response of the building
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