System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece

The present study focuses on the dynamic system identification of the Suleiman Mosque minaret in the medieval city of Rhodes, Greece. Suleiman Mosque was built in 1522 at the site of the destroyed Christian Church of the Apostles. First, we performed sets of ambient vibration measurements at the min...

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Main Authors: Anna Karatzetzou, Dimitris Pitilakis, Stella Karafagka
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Geosciences
Subjects:
Online Access:https://www.mdpi.com/2076-3263/11/7/275
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author Anna Karatzetzou
Dimitris Pitilakis
Stella Karafagka
author_facet Anna Karatzetzou
Dimitris Pitilakis
Stella Karafagka
author_sort Anna Karatzetzou
collection DOAJ
description The present study focuses on the dynamic system identification of the Suleiman Mosque minaret in the medieval city of Rhodes, Greece. Suleiman Mosque was built in 1522 at the site of the destroyed Christian Church of the Apostles. First, we performed sets of ambient vibration measurements at the minaret of the monument. Based on these data, we calculated the eigenproperties of the minaret. Next, we modeled the monument in three dimensions, using the finite element method. Six numerical models were considered. Model Ι is the simplest one (isolated, fixed base minaret). Model VI is the most complicated one (simulation of the whole mosque also considering soil–structure interaction and foundation flexibility). The calculated predominant periods and mode shapes of Models I–VI are validated against the microtremor field measurements, recorded on the minaret’s two floors and ground level. We elaborate on the reliability of finite element models for earthquake response evaluation, considering soil–structure interaction and foundation flexibility on the mode shape eigenfrequencies. Additionally, we discuss the seismic response of the minaret compared to the whole monument. We observed no significant difference in the first two modes of response, implying that the minaret’s dynamic behavior is slightly affected by the entire mosque’s presence.
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spelling doaj.art-6ab7581cfa0c441c9179cc84f8924d532023-11-22T02:23:13ZengMDPI AGGeosciences2076-32632021-06-0111727510.3390/geosciences11070275System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, GreeceAnna Karatzetzou0Dimitris Pitilakis1Stella Karafagka2Civil Engineer Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceCivil Engineer Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceCivil Engineer Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceThe present study focuses on the dynamic system identification of the Suleiman Mosque minaret in the medieval city of Rhodes, Greece. Suleiman Mosque was built in 1522 at the site of the destroyed Christian Church of the Apostles. First, we performed sets of ambient vibration measurements at the minaret of the monument. Based on these data, we calculated the eigenproperties of the minaret. Next, we modeled the monument in three dimensions, using the finite element method. Six numerical models were considered. Model Ι is the simplest one (isolated, fixed base minaret). Model VI is the most complicated one (simulation of the whole mosque also considering soil–structure interaction and foundation flexibility). The calculated predominant periods and mode shapes of Models I–VI are validated against the microtremor field measurements, recorded on the minaret’s two floors and ground level. We elaborate on the reliability of finite element models for earthquake response evaluation, considering soil–structure interaction and foundation flexibility on the mode shape eigenfrequencies. Additionally, we discuss the seismic response of the minaret compared to the whole monument. We observed no significant difference in the first two modes of response, implying that the minaret’s dynamic behavior is slightly affected by the entire mosque’s presence.https://www.mdpi.com/2076-3263/11/7/275microtremorsfield measurementsmonumentsambient vibration measurementsmodal analysistime history analysis
spellingShingle Anna Karatzetzou
Dimitris Pitilakis
Stella Karafagka
System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece
Geosciences
microtremors
field measurements
monuments
ambient vibration measurements
modal analysis
time history analysis
title System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece
title_full System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece
title_fullStr System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece
title_full_unstemmed System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece
title_short System Identification of Mosques Resting on Soft Soil. The Case of the Suleiman Mosque in the Medieval City of Rhodes, Greece
title_sort system identification of mosques resting on soft soil the case of the suleiman mosque in the medieval city of rhodes greece
topic microtremors
field measurements
monuments
ambient vibration measurements
modal analysis
time history analysis
url https://www.mdpi.com/2076-3263/11/7/275
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