A Simplified Strengthening Methodology for Minaret Structures in Turkey: Hagia Sophia Case
Keywords:Historical buildings, hagia sophia, minaret structures, strengthening, time history analysis.
Considering various types of historical buildings in Turkey, mosqs are the most common ones. Mosqs have minaret structures standing along next to the main body with dome. The minaret buildings with their own architectural and structural characteristics, are representing the cultural and historical change in different periods over the centruies. Minarets from Ottomon period are the most widespread ones in Turkey. With its cultural synthesis through out the history, minarets from Ottomon period differ from the others with structural capability. Since Turkey is a earthquke prone country, it is very important to make existing historical structures stronger against to the seismic loads. Recently, historical structures have been strengthened with fiber reinforced polymer (FRP) composites. There are numerous of research studies are available related with strengthening using FRP composites. From this standing point, in this research, a simplified and practicale strengthening methodlogy is proposed. For the investigation Hagia Sophia Minaret structures has been used as a case study. In the analysis part, Hagia Sophia Minaret structures have been investigated through time history analyses before and after FRP composite strengthening. As a result of the present research work, displacements and stress values are determined for comparison of the structural behavior of minaret structures.
Dogangun A, Acar R, Sezen H, Livaoglu R. Investigation of dynamic response of masonry minaret structures. Bulletin of Earthquake 2008; 6: 505-517. https://doi.org/10.1007/s10518-008-9066-5
Erdogan ST, Erdoğan TY. Ten thousand year history of binder materials and concrete. ODTÜ publishing house, Ankara 2007b.
Dogangun A. Performance of reinforced concrete buildings during the May 1, 2003 Bingol earthquake in Turkey. Eng Struct 2004; 26: 841-856. https://doi.org/10.1016/j.engstruct.2004.02.005
Ertek E. Structural Modeling and Earthquake Analysis of Ottoman Minarets. Graduate school of Natural and applied Sciences, Gebze 2009.
Chopra AK. Dynamics of Structures: Theory and application to earthquake engineering, Prentice, Inc., New Jersey 1995.
Dogangun A, Sezen H, Tuluk OI. Traditional Turkish masonry minarets and their earthquake damage. Int J Archit Heritage: Conserv Anal Restor 2007a; 1: 1-21. https://doi.org/10.1080/15583050701436980
Kusuzumu HK. Traditional construction techniques and the contemporary restorations of Istanbul minarets. Graduate school of Natural and applied Sciences, Mimar Sinan Fine Arts University 2010.
Oliveira CS, Çaktı E, Stengel D, Branco M. Minaret behavior under earthquake loading: The case of historical Istanbul. Earthquake Engineering and Structural Dynamics 2012; 4(1): 19-39. https://doi.org/10.1002/eqe.1115
Altunisik AC. Dynamic response of masonry minarets strengthened with Fiber Reinforced Polymer (FRP) composites. Nat Hazards Earth Syst Sci 2011; 11: 2011. https://doi.org/10.5194/nhess-11-2011-2011
Sener IN. An ınnovative methodology and structural analysis for relocation of historical masonry monuments. A case study of Hasankeyf, MSc Thesis METU, Ankara, Turkey 2004.
Turk AM, Cosgun C. Seismic behaviour and retrofit of historic masonry minaret. Građevınar 2012; 64(1): 39-45.
Aydingun SG. The Hagia Sophia Repairs after earthquakes of throughout the history, Kocaeli Earthquake Symposium, Kocaeli, Turkey 2005.
URL_1, 2015 www.ayasofyamuzesi.gov.tr
Kheyroddin A, Saghafi MH, Safakhah S. Strengthening of historical masonry buildings with fiber reinforced polymers (FRP), Advanced Materials Research Conference, 2010. https://doi.org/10.4028/www.scientific.net/amr.133-134.903
Kirlangic AS. Re-evaluatıon of earthquake performance and strengthening alternatives of hagia sophia. Earthquake engineering, Bosporus University 2008.