Identifying the dynamic characteristics of a dual core-wall and frame building in Chile using aftershocks of the 27 February 2010 (Mw=8.8) Maule, Chile, earthquake
Earthquake Spectra
By: Mehmet Çelebi, Mark Sereci, Ruben Boroschek, Rodrigo Carreño, and Patricio Bonelli
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Abstract
Following the 27 February 2010 (Mw = 8.8) Offshore Maule, Chile earthquake, a temporary, 16-channel, real-time data streaming array was installed in a recently constructed building in Viña del Mar to capture its responses to aftershocks. The cast-in-place, reinforced concrete building is 16 stories high, with 3 additional basement levels, and has dual system comprising multiple structural walls and perimeter frames. This building was not damaged during the main-shock, but other buildings of similar design in Viña del Mar and other parts of Chile were damaged, although none collapsed. Dynamic characteristics of the building identified from the low-amplitude (PGA of about 2 Gal) response recordings of aftershocks are found to compare well with those determined from modal analyses using a design level FEM model. Distinct “major-axes” translational and torsional fundamental frequencies, as well as frequencies of secondary modes, are identified. Evidence of beating is consistently observed in the response data for each earthquake. Results do not match well with U.S. code formulas.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Identifying the dynamic characteristics of a dual core-wall and frame building in Chile using aftershocks of the 27 February 2010 (Mw=8.8) Maule, Chile, earthquake |
| Series title | Earthquake Spectra |
| DOI | 10.1193/011812EQS012M |
| Volume | 29 |
| Issue | 4 |
| Year Published | 2013 |
| Language | English |
| Publisher | Earthquake Engineering Research Institute |
| Contributing office(s) | Earthquake Science Center |
| Description | 22 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Earthquake Spectra |
| First page | 1233 |
| Last page | 1254 |
| Country | Chile |
| State | Talca Province |
| City | Maule |
| Google Analytic Metrics | Metrics page |