TY - GEN
T1 - System identification of a two-story infilled rc building in different damage states
AU - Yousefianmoghadam, S.
AU - Song, M.
AU - Stavridis, A.
AU - Moaveni, B.
N1 - Publisher Copyright: © 2015 ASCE and ATC.
PY - 2015
Y1 - 2015
N2 - This study focuses on vibration-based system identification of an actual structure located in El Centro, California. The structure had already been subjected to four earthquakes with epicenters in close proximity and was to be demolished due to the extended damage. Four damage levels were introduced to the structure by gradually removing four perimeter infill walls. A series of dynamic tests were conducted in each damage state using an eccentric mass shaker. The ambient vibration of the structure was also recorded through an array of 60 accelerometers mounted on the structure. The system identification discussed in this paper was conducted using the ambient vibration recordings. Moreover, a preliminary finite element model of the building was created to estimate numerically the dynamic characteristics of the structure. These were compared to the properties obtained from the system identification. The results indicate that the frequencies estimated by the model overestimate those obtained from the system identification results, while the experimentally and numerically obtained mode shapes are in good agreement.
AB - This study focuses on vibration-based system identification of an actual structure located in El Centro, California. The structure had already been subjected to four earthquakes with epicenters in close proximity and was to be demolished due to the extended damage. Four damage levels were introduced to the structure by gradually removing four perimeter infill walls. A series of dynamic tests were conducted in each damage state using an eccentric mass shaker. The ambient vibration of the structure was also recorded through an array of 60 accelerometers mounted on the structure. The system identification discussed in this paper was conducted using the ambient vibration recordings. Moreover, a preliminary finite element model of the building was created to estimate numerically the dynamic characteristics of the structure. These were compared to the properties obtained from the system identification. The results indicate that the frequencies estimated by the model overestimate those obtained from the system identification results, while the experimentally and numerically obtained mode shapes are in good agreement.
UR - https://www.scopus.com/pages/publications/84957969339
U2 - 10.1061/9780784479728.050
DO - 10.1061/9780784479728.050
M3 - Conference contribution
T3 - Improving the Seismic Performance of Existing Buildings and other Structures 2015 - Proceedings of the 2nd ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures
SP - 607
EP - 618
BT - Improving the Seismic Performance of Existing Buildings and other Structures 2015 - Proceedings of the 2nd ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures
A2 - Leon, Roberto T.
PB - American Society of Civil Engineers (ASCE)
T2 - 2nd ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures
Y2 - 10 December 2015 through 12 December 2015
ER -