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Golden Gate Bridge response: a study with low-amplitude data from three earthquakes

Earthquake Spectra

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DOI: 10.1193/1.4000018

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Abstract

The dynamic response of the Golden Gate Bridge, located north of San Francisco, CA, has been studied previously using ambient vibration data and finite element models. Since permanent seismic instrumentation was installed in 1993, only small earthquakes that originated at distances varying between ~11 to 122 km have been recorded. Nonetheless, these records prompted this study of the response of the bridge to low amplitude shaking caused by three earthquakes. Compared to previous ambient vibration studies, the earthquake response data reveal a slightly higher fundamental frequency (shorter-period) for vertical vibration of the bridge deck center span (~7.7–8.3 s versus 8.2–10.6 s), and a much higher fundamental frequency (shorter period) for the transverse direction of the deck (~11.24–16.3 s versus ~18.2 s). In this study, it is also shown that these two periods are dominant apparent periods representing interaction between tower, cable, and deck.

Geospatial Extents

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Golden Gate Bridge response: a study with low-amplitude data from three earthquakes
Series title:
Earthquake Spectra
DOI:
10.1193/1.4000018
Volume
28
Issue:
2
Year Published:
2012
Language:
English
Publisher:
EERI
Publisher location:
Oakland, CA
Contributing office(s):
Earthquake Science Center
Description:
24 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Earthquake Spectra
First page:
487
Last page:
510
Country:
United States
State:
California
Other Geospatial:
Golden Gate Bridge