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MODE IDENTIFICATION OF AN ARCH DAM BY A DYNAMIC AIR-GUN TEST.

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Abstract

Thirteen natural frequencies of a concrete arch dam (Monticello Dam near Sacramento, California) have been identified by using a dynamic testing method which employs an air gun firing in the reservoir as the excitation source. These vibrations modes are determined from the peak responses in the Fourier amplitude spectra of the free-vibration data recorded at three crest locations using three-component geophones. Comparisons of the first five natural frequencies with results obtained by forced vibration tests using rotating mass shakers show good agreement. The next eight higher-frequency modes, not previously identified, are determined from data of the present tests.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
MODE IDENTIFICATION OF AN ARCH DAM BY A DYNAMIC AIR-GUN TEST.
ISBN:
0943198070
Year Published:
1986
Language:
English
Publisher:
Earthquake Engineering Research Inst
Publisher location:
El Cerrito, CA, USA
First page:
753
Last page:
764
Number of Pages:
12
Conference Title:
Proceedings of the Third U. S. National Conference on Earthquake Engineering.
Conference Location:
Charleston, SC, USA