Assessing the Vibrational Frequencies of the Cathedral of Cologne (Germany) by Means of Ambient Seismic Noise Analysis

Ambient seismic noise measurements were conducted inside the Cathedral of Cologne (Germany) for assessing its frequencies of vibration and for checking whether these occur in the range where soil amplification is expected. If this is the case, damages may increase in case of an earthquake due to an...

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Bibliographic Details
Published in:Natural hazards (Dordrecht) 2006-05, Vol.38 (1-2), p.229-236
Main Authors: Faecke, Andreas, Parolai, Stefano, Richwalski, Sandra M, Stempniewski, Lothar
Format: Article
Language:English
Subjects:
Cathedrals
Cologne
Earthquake construction
Earthquake damage
Finite element analysis
Risk assessment
Seismic engineering
Seismic phenomena
Spectra
Stations
Vibration
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Summary:Ambient seismic noise measurements were conducted inside the Cathedral of Cologne (Germany) for assessing its frequencies of vibration and for checking whether these occur in the range where soil amplification is expected. If this is the case, damages may increase in case of an earthquake due to an increased structural response of the building. Analysis of the ratio between the horizontal and vertical components of the spectra recorded at stations located inside the building as well as the ratio between the corresponding components of the spectra recorded simultaneously inside the building and at a reference station placed in the basement of the cathedral indicated several modes of vibration. Facilitated by these results an assessment of the seismic vulnerability was attempted for a 2D ground motion scenario using the finite element method.
ISSN:0921-030X
1573-0840
DOI:10.1007/s11069-005-8616-2