Field Structural Dynamic Tests at the Volvi-Greece European Test Site

Manos, George C.

doi:10.1007/978-3-319-56136-3_4

Cited by 1 publication

(2 citation statements)

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“…The studied in this manuscript damaged Kourouklata bell tower revealed that the reinforced concrete structures built in Greece mainly after world war two and the enforcement of the New Code for Seismic Design, e.g. between 1950 and1996, have a number of weaknesses that can lead to partial or total collapse. These weaknesses have been identified from some time by researchers and professionals specializing in earthquake engineering.…”

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confidence: 91%

“…Foundation problems for bell towers are evident in many case the most celebrated being Pisa's grand bell tower in Italy, that is quoted as a major medieval engineering error. Therefore, the soil flexibility is also an area of research interest for these structures especially when their dynamic and earthquake response is under investigation ( [20] to [24]).…”

Section: Introductionmentioning

confidence: 99%

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The Seismic Performance of the Damaged Bell Tower of Kourouklata in Kefalonia, Greece During the 2014 Earthquake Sequence – A Proposal for Retrofitting

Manos,

Kotoulas,

Melidis

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The dynamic and earthquake response of the bell tower of Ioannis Chrisostomos, located at the village of Kourouklata in the island of Kefalonia, Greece is examined here. This structure was subjected during the winter of 2014 in an intensive earthquake sequence, developing structural damage at the columns of its upper part. The 2014 strong earthquake sequence at the island of Kefalonia subjected a number of tall bell towers to considerable seismic forces. Despite the high amplitude of these seismic forces most bell towers in the island did not developed structural damage, with the exception of a bell tower located at the Kourouklata village. This bell tower is the subject of the current special study. The fact that the collapsed in 1953 earthquake sequence bell towers were masonry structures whereas the bell towers excited by the 2014 earthquake are reinforced concrete structures designed under the current seismic design provisions can explain the observed satisfactory earthquake performance. The dynamic and earthquake response of this bell tower was numerically simulated employing a 3-D elastic numerical simulation shell elements. The superstructurefoundation interaction was included in the numerical simulation. a third case is also examined whereby the stiffness of these links becomes even lower. The obtained numerical results of all these examined cases are presented and discussed. It is demonstrated that the soil -foundation -structure interaction influences the dynamic and earthquake response predictions for this structure quite significantly. Through all the presented results and the discussion the observed behaviour can be predicted reasonably well. The studied in this manuscript damaged Kourouklata bell tower revealed that the reinforced concrete structures built in Greece mainly after world war two and the enforcement of the New Code for Seismic Design, e.g. between 1950 and1996, have a number of weaknesses that can lead to partial or total collapse. These weaknesses have been identified from some time by researchers and professionals specializing in earthquake engineering. Countermeasures for their strengthening are necessary. The effectiveness of such a retrofitting scheme employing prestressing cables is numerically studied here. The satisfactory performance of the Havriata bell tower studied previously demonstrates the effectiveness of the current design according to the provisions of the New Greek Seismic Code and Euro-Code8. 648COMPDYN 2023 9 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

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mentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%