PSI - Issue 79

Vrouva Antigone et al. / Procedia Structural Integrity 79 (2026) 161–167

167

3. Conclusions No severe damages (i.e. collapses) were predicted by the numerical models that were analyzed, confirming that the seating of the beams freely resting on the entablature is sufficient. Among the conclusions of the current study it can be ascertained that there is an inherit sensitivity of such models on the frequency content of the ground excitations used. In particular architectural blocks the systematic and verified behavior of the structure seems to remain constant in all the investigated ground motions and scenarios. For example the tendency of the outer peristasis capitals to lean outwards at the angle was obvious, and the general behaviour of the lengthening of the façade demonstrated by the opening of the joints at the architrave level and at the pediment blocks level was observed. The current analysis confirms that the roof (either the grid of beams with the coffers or the grid alone) tends to restrain the overall displacements of the structure, especially where the maximum displacements appear towards the centre of the façade. The grid of beams scenario register amplified displacements of the beams especially in the mid area of the structure when compared to the fully restored coffered roof as anticipated. Thus the addition of the coffered slabs actually provides a diaphragm readjusting the displacements of the two colonnades especially in the more vulnerable mid area of the structure where the maximum displacements appear. Acknowledgements This analysis was carried out during the employment of the authors in the Service for the Restoration of the Acropolis monument with the funding of ESPA 2014-2020. The authors would like to thank the Acropolis Restoration Committee for the fruitful discussions on the subject and especially Prof. M. Korres, Prof. P. Koufopoulos and Prof. H. Mouzakis for their valuable insights. Also special thanks are owed to the colleague, Archaeologist, Dr. D. Andrikou for the meticulous work on the evidences of the historic phases of the monuments and the many productive discussions shared with the authors. Special mention is intended for Em. Prof. I.Psycharis for the guidance on the specifics of the analysis and his overall support. References Korres M., Bouras Ch., 1983, Study for the Restoration of the Parthenon, Vol.1, Athens, in Greek. Skaris K., Andrikou D., 2025, West pteron and Opisthonaos of the Parthenon, Brief chronicle of damages, alterations and structural additions , Unpublished report, YSMA archive, in Greek. Koufopoulos P., 1994, Study for the Restoration of the Parthenon, Vol.3a, Athens, in Greek. Skaris K., Christodoulopoulou R., Konteas I., Vrouva A., 2014, Restoration of the Parthenon, Program 11,Restoration of the roof of the west pteron and prerequisite operations, unpublished report, YSMA archive, in Greek. Kalogeras I., 2020, “Technical Report of the Acropolis accelometric array period 01/06/2019 - 31/12/2019”, Geodynamic Institute of the National Observatory of Athens, Athens, YSMA archive, unpublished, in Greek. Vrouva A., Mouzakis H., Psycharis I., 2023, Designing the special connectors of the Parthenon's west tympanon , In: Procedia Structural Integrity, Volume 47, Pages 521-534. Itasca Consulting group, 2003, 3DEC: 3-Dimensional Distinct Element Code, Theory and Background. Psycharis I.N., 2015, Technical Report of the Research programme “Selection of appropriate accellerograms for the Acropolis monuments dynamic analysis”, Acropolis Restoration Service and Laboratory of Earthquake Engineering, NTUA, Athens, in Greek. Dasiou M.E., Mouzakis H., Psycharis I. N., Papantonopoulos C., Vayas I., 2009a, Experimental investigation of the seismic response of parts of ancient temples . In: Proceedings of the international conference “Protection of Historical Buildings” (PROHITECH 09), Rome, 21-24 June 2009, vol. 2 CRC Press / Balkema, Leiden , The Netherlands, pp. 1671-1622. ISBN: 978-0-415-55805-1. Dasiou M.E., Psycharis I. N., Vayas I., 2009b, Verification of numerical models used for the analysis of ancient temples . In: Proceedings of the international conference “Protection of Historical Buildings” (PROHITECH 09), Rome, 21-24 June 2009, vol. 2 CRC Press / Balkema, Leiden , The Netherlands, pp. 1269-1274. ISBN: 978-0-415-55805-1.