Preliminary seismic risk assessment of monolithic columns of the Aphaia Temple in Aegina

Melissianos, V. E., Lachanas, C. G., and Vamvatsikos, D., 2020. Preliminary seismic risk assessment of monolithic columns of the Aphaia Temple in Aegina, in Proceedings of the 4th International Conference on Protection of Historical Constructions (PROHITECH 2020), 25-27 October, 2021, Athens, Greece. Link to the paper.

Studies on the seismic assessment of monumental structures of antiquity are mostly focused on the estimation of the structural behavior and do not involve the pertinent uncertainties. Towards filling this research gap, a preliminary seismic risk assessment of monolithic columns of the Aphaia Temple in Aegina island, Greece, is presented. A comprehensive application of the framework of Performance-Based Earthquake Engineering is carried out. Site-specific seismic hazard estimation is performed at first by employing Probabilistic Seismic Hazard Analysis. The rocking column is analyzed under seismic excitation by numerically solving the equation of motion in order to extract the fragility curves. Finally, the convolving of seismic hazard and structural response yields the seismic risk of the column that is used to estimate the mean annual rate of exceeding predefined limit states that are associated with damage and collapse of the column.