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• Hemeda, Sayed

The objective of this paper is the investigation of the behavior of historic masonry structures subjected to static and seismic forces and the formulation of numerical models for use in structural analysis. The case study presented herein regards the seismic analysis of El-Sakakini palace (1892 AC) in Cairo, Egypt (damaged by the earthquakes occurred in 1992 and 1995). Firstly, we collected all data regarding the site, the geometry of manufact, the characteristics of materials of construction, the structure and the soil medium, etc. The paper presents the next part which includes the investigation of the static and seismic performance of these structures according to statistical data from recent earthquakes and finally the development of an analytical model of describing their performance. An analytical, plasticity-based Model is presented for the inelastic analysis of traditional masonry structures. The proposed Model is applied to the analysis of the El-Sakakini palace in Cairo. A non-linear model is developed, aiming to capturing the key in elastic mechanisms. The analytical model is implemented in the finite element code Autodesk® Robot™ Structural Analysis Professional and validated against experimental results. The results obtained suggest that for such structures non-linear static analysis provides a reasonable prediction of damage at the base of the palace, but is not however suitable for predicting the overall damage along the palace‘s entire height. The conclusive aim of the project is then to develop guidelines for the evaluation of the static and seismic vulnerability of historic masonry palaces. Ultimately, the analysis presents the optimal structural interventions to remedy the existing damage, also to to prevent the formation of the same mechanisms under the action of future earthquake.

• History and Archaeology

• Αρχαιολογία

Architectural Heritage, multiple leaf-masonry, monitoring, restoration, structural analysis, Non-linear static analysis, Seismic Performance

Περιέχει 18 εικόνες και 1 πίνακα

1. Alberto. M., Felicita. R., Gerardo. S., (2011), Seismic performance of masonry structures retrofitted with steel tying elements, 5th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 22-25 November, p 130.Cardoso. R., Lopes. M., Bento. R., (2005), Seismic evaluation of old masonry buildings. Part 1: method description and application to a case- study. Engineering Structures, 27 (14) , pp 2024-2035.Egyptian Code. Egyptian code of Practice (ECP-2008) for estimating loads and forces, 2008.Gamal M. A. and Noufal A., A Neotectonics model and seismic hazard assessment for Egypt, 8 th international conference on geology of the Arab world, Cairo university Egypt 13-16 2006.Gergova. D., Iliev. I., Rizzo. V., (1995), Evidence of a seismic event on Thracian tombs dated to the Hellenistic period, Sveshtari, NE Bulgaria.- Annali di Geofizica (Italia), Vol 38, 5-6,pp 919-926.Hemeda, S, (2013), Seismic Hazard Analysis for Archaeological Structures — A Case Study for EL Sakakini Palace Cairo, Egypt. In Engineering Seismology, Geotechnical and Structural Earthquake Engineering (edited book). http://dx.doi.org/10.5772/54395Hemeda, S, (2013b), Engineering Characterization of Sakakini,s Palace Stones and other Construction Materials, Cairo- Egypt. Geomaterials, Vol 3.1 , doi:10.4236/gm.2013.Khalil. A., (2011), Use of geophysical and seismological techniques for aiding in rehabilitation of monumental sites, 5th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 22-25 November, p 119.Lagomarsino. S., podesta. S., (2004), Seismic vulnerability of ancient churce. Part1: Damage assessment and emergency planning. Earthquake Spectra, Vol.20; pp 377-394, ISSN: 8755-2930.Lagomarsino. S., podesta. S., (2004), Seismic vulnerability of ancient churce. Part2: Statistical analysis of surveyed data and methods for risk analysis. Earthquake Spectra, Vol.20; pp 395-412, ISSN: 8755-2930.Kouris. L., Kappos. A., (2009), Seismic performance of ancient timber-framed walls, 4th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 8-9 December, pp 119- 126.Mazzolani. F.M., Mandara. A., (2009), Seismic Protection of historical buildings: the PROHITECH project, 4th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 8-9 December, pp 197- 208.Podesta. S., Brignola. A., (2009), the seismic behaviour of the ―Santi Marciano E Nicandro‖ church in l, Aquila (Italy) after the 6th of April 2009 Earthquake, 4th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 8-9 December, pp 184-189.Podesta. S., Curti. E., (2009), An integrate approach for the evaluation of the seismic safety of S. Maria Antiqua church, 4th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 8-9 December, pp 178- 183.Peraskovic. Z., Sedmak. S., (2011), Fatigue of structural components in DC 90 seismic during earthquake, 5th International Congress on ―Science and technology for the safeguard of culture heritage in the Mediterranean basin‖ 22-25 November, p 125.