thumbnail

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:
, , , ,
DOI: 10.1193/011812EQS012M

Links

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.

Geospatial Extents

Additional Publication Details

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
First page:
1233
Last page:
1254
Number of Pages:
22
Country:
Chile
State:
Talca Province
City:
Maule