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Loma Prieta response of an eccentrically braced tall building

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Abstract

Acceleration response records obtained during the October 17, 1989 Loma Prieta earthquake [Ms = 7.1] from the 47-story, eccentrically braced Embarcadero Building (No. 4) [EMB], located in San Francisco, California, are studied. The predominant response modes of the building and the associated dynamic characteristics are determined by spectral analyses and system identification techniques. The first modal frequencies are at approximately 0.19 Hz (NS) and 0.16 Hz (EW). Discontinuity of stiffness and mass at the 40th floor causes excessive drift ratios for the floors above.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Loma Prieta response of an eccentrically braced tall building
ISBN:
0872629104
Year Published:
1993
Language:
English
Publisher:
Publ by ASCE
Publisher location:
New York, NY, United States
Larger Work Title:
Structural Engineering in Natural Hazards Mitigation
First page:
1545
Last page:
1550
Number of Pages:
6
Conference Title:
Proceedings of the Symposium on Structural Engineering in Natural Hazards Mitigation
Conference Location:
Irvine, CA, USA
Conference Date:
19 April 1993 through 21 April 1993