TY - GEN
T1 - Comparative study on modal identification of a 10 story RC structure using free, ambient and forced vibration data
AU - Yousefianmoghadam, Seyedsina
AU - Stavridis, Andreas
AU - Moaveni, Babak
N1 - Publisher Copyright: © The Society for Experimental Mechanics, Inc. 2017.
PY - 2017
Y1 - 2017
N2 - In this study the modal parameters of a ten-story reinforced concrete (RC) building are estimated from recordings of free, ambient, and forced vibrations, using the eigensystem realization algorithm (ERA), the natural excitation technique combined with the eigensystem realization algorithm (NExT-ERA), and peak-picking method, respectively. The structure vibrated freely after it was hit the by a jack hammer used to demolish selected perimeter walls in the second story. The forced vibrations were induced using a portable eccentric mass shaker installed on the second story of the structure. The results obtained from the three methods indicate that the free vibration recordings can provide an accurate estimation of the modal parameters of the structure at lower identification order and with reduced computational cost compared to the NExT-ERA method applied on the ambient vibration recordings.
AB - In this study the modal parameters of a ten-story reinforced concrete (RC) building are estimated from recordings of free, ambient, and forced vibrations, using the eigensystem realization algorithm (ERA), the natural excitation technique combined with the eigensystem realization algorithm (NExT-ERA), and peak-picking method, respectively. The structure vibrated freely after it was hit the by a jack hammer used to demolish selected perimeter walls in the second story. The forced vibrations were induced using a portable eccentric mass shaker installed on the second story of the structure. The results obtained from the three methods indicate that the free vibration recordings can provide an accurate estimation of the modal parameters of the structure at lower identification order and with reduced computational cost compared to the NExT-ERA method applied on the ambient vibration recordings.
KW - Comparative study
KW - Dynamic testing
KW - Impulse response
KW - RC structure
KW - System identification
UR - https://www.scopus.com/pages/publications/85034218357
U2 - 10.1007/978-3-319-54777-0_33
DO - 10.1007/978-3-319-54777-0_33
M3 - Conference contribution
SN - 9783319547763
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 267
EP - 276
BT - Dynamics of Civil Structures - Proceedings of the 35th IMAC, A Conference and Exposition on Structural Dynamics 2017
A2 - Pakzad, Shamim
A2 - Caicedo, Juan
PB - Springer New York LLC
T2 - 35th IMAC Conference and Exposition on Structural Dynamics, 2017
Y2 - 30 January 2016 through 2 February 2016
ER -