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.
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Research Article|
November 01, 2013
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
Mehmet Çelebi, M.EERI;
Mehmet Çelebi, M.EERI
a)
Earthquake Science Center, U.S. Geological Survey, 345 Middlefield Rd., Menlo Park, CA, 94025
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Mark Sereci, M.EERI;
Mark Sereci, M.EERI
b)
Digitexx Data Systems Inc., Scottsdale, AZ 85260
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Ruben Boroschek, M.EERI;
Ruben Boroschek, M.EERI
c)
Department of Civil Engineering, University of Chile, Santiago, Chile
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Rodrigo Carreño;
Rodrigo Carreño
c)
Department of Civil Engineering, University of Chile, Santiago, Chile
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Patricio Bonelli
Patricio Bonelli
d)
UTFSM, Valparaiso, Chile
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Earthquake Spectra (2013) 29 (4): 1233–1254.
Article history
received:
18 Jan 2012
accepted:
10 Jul 2012
first online:
01 Jun 2020
Citation
Mehmet Çelebi, Mark Sereci, Ruben Boroschek, Rodrigo Carreño, Patricio Bonelli; 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 2013;; 29 (4): 1233–1254. doi: https://doi.org/10.1193/011812EQS012M
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Index Terms/Descriptors
- acceleration
- accelerometers
- aftershocks
- amplitude
- aseismic design
- building codes
- buildings
- Chile
- civil engineering
- concrete
- construction materials
- damage
- design
- earthquakes
- elastic waves
- epicenters
- finite element analysis
- instruments
- main shocks
- seismic response
- South America
- statistical analysis
- structures
- time series analysis
- transfer functions
- walls
- Vina del Mar Chile
- Maule earthquake 2010
Latitude & Longitude
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