Improving the seismic resistance of masonry buildings : concepts for cultural heritage and recent developments in structural analysis

摘要

Conservation and restoration of historical structures are still a challenge to modern practitioners even if considerableresearch advances have occurred in the last decades, namely with respect to non-destructive testing,mechanical characterization, tools for advanced numerical analysis, knowledge on traditional materials andtechniques, and innovative materials and techniques. In the paper, the ICOMOS Recommendations for theAnalysis, Conservation and Structural Restoration of Architectural Heritage are briefly reviewed, togetherwith recent developments in structural analysis. The proposed methodology is applied to Monastery ofJerónimos, in Lisbon, Portugal, including the following steps: seismic action characterization, from the identificationof earthquake source areas to the artificial generation of acceleration time histories, using specifictheoretical models and including superficial site-effects; simple numerical modeling for a preliminary knowledgeof the structural behavior; experimental mechanical characterization of materials and structural elements;installation of static and dynamic monitoring systems aiming at a better understanding of the static anddynamic behavior; development of advanced numerical models including calibration against relevant experimentaldata; non-linear dynamic analysis of the structure for different earthquake levels.