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 Frequency and damping evolution during experimental seismic response of civil engineering structures
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/7854

title: Frequency and damping evolution during experimental seismic response of civil engineering structures
authors: Molina, F. J.
Gonzalez, M. P.
Pegon, P.
Varum, H.
Pinto, A. V.
keywords: pseudodynamic test
seismic test
reinforced concrete
shear wall
framed structure
identification method
eigen frequency
damping ratio
issue date: 2000
publisher: Universidad Politécnica de Madrid
abstract: The results of the seismic tests on several reinforced-concrete shear walls and a four-storey frame are analysed in this paper. Each specimen was submitted to the action of a horizontal accelerogram, with successive growing amplitudes, using the pseudodynamic method. An analysis of the results allows knowing the evolution of the eigen frequency and damping ratio during the earthquakes thanks to an identification method working in the time domain. The method is formulated as a spatial model in which the stiffness and damping matrices are directly identified from the experimental displacements, velocities and restoring forces. The obtained matrices are then combined with the theoretical mass in order to obtain the eigen frequencies, damping ratios and modes. Those parameters have a great relevance for the design of this type of structures.
URI: http://hdl.handle.net/10773/7854
ISBN: 978-84-86189-67-9
source: COST F3 Conference on System Identification & Structural Health Monitoring
appears in collectionsCIVIL - Comunicações

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