Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modal Parameter Variation of an Earthquake Damaged Building
On February 27, 2010 one of the largest magnitude earthquake ever registered occurred in Chile. Although, several tall buildings suffered damage without collapse, the response of these buildings, in general, has been considered a success. Several studies have been carried out to understand the seismic response of these damage buildings, in order to develop appropriate retrofit strategies. We have selected one building located in the coastal city of Viña del Mar for instrumentation. This area suffered strong shaking with peak ground acceleration close to 0.35 g and more than 180 s of motion. The structure is a residential shearwall building with 17 stories and one basement level. The main structural system was damaged at the basement and first floor levels. The main damage was concrete crushing of walls, along with longitudinal reinforcement buckling at wall boundaries and severe cracking of slabs and lintel beams. An array of 12 accelerometers was deployed in the building to evaluate its modal properties variations, recording five aftershocks. This publication presents the structural damage in the building and the preliminary system identification results from strong motion records. Variations of the modal parameters are correlated with motion amplitudes and compared with ambient vibration conditions.
Modal Parameter Variation of an Earthquake Damaged Building
On February 27, 2010 one of the largest magnitude earthquake ever registered occurred in Chile. Although, several tall buildings suffered damage without collapse, the response of these buildings, in general, has been considered a success. Several studies have been carried out to understand the seismic response of these damage buildings, in order to develop appropriate retrofit strategies. We have selected one building located in the coastal city of Viña del Mar for instrumentation. This area suffered strong shaking with peak ground acceleration close to 0.35 g and more than 180 s of motion. The structure is a residential shearwall building with 17 stories and one basement level. The main structural system was damaged at the basement and first floor levels. The main damage was concrete crushing of walls, along with longitudinal reinforcement buckling at wall boundaries and severe cracking of slabs and lintel beams. An array of 12 accelerometers was deployed in the building to evaluate its modal properties variations, recording five aftershocks. This publication presents the structural damage in the building and the preliminary system identification results from strong motion records. Variations of the modal parameters are correlated with motion amplitudes and compared with ambient vibration conditions.
Modal Parameter Variation of an Earthquake Damaged Building
Conf.Proceedings of Society
Caicedo, J.M. (Herausgeber:in) / Catbas, F.N. (Herausgeber:in) / Cunha, A. (Herausgeber:in) / Racic, V. (Herausgeber:in) / Reynolds, P. (Herausgeber:in) / Salyards, K. (Herausgeber:in) / Aguilar, Antonio A. (Autor:in) / Boroschek, Ruben L. (Autor:in) / Massone, Leonardo M. (Autor:in)
06.03.2012
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Modal Parameter Variation of an Earthquake Damaged Building
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