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Operational Modal Analysis of a Canadian Dam

The measurements and analysis presented here are performed by Professor Carlos Ventura, University of British Columbia, Vancouver, Canada.

This case consider measurements conducted on a Canadian dam. The dam is 130 m long and 58 m high, and built in 1930. The measurements were conducted using an 8-channel measurement system. The sensors were Kinemetrics Episensor, forced balanced accelerometers. Modal analysis was conducted with ARTeMIS Extractor Pro.

The mode shown above has been estimated with the Enhanced Frequency Domain Decomposition estimator available in the ARTeMIS Extractor Handy and ARTeMIS Extractor Pro versions.

Related Information

P. Andersen, R. Brincker, C. Ventura, R. Cantieni
Mode Estimation of Civil Structures Subject to Ambient and Harmonic Excitation
Proceedings of the 26th International Modal Analysis Conference (IMAC) Orlando, Florida USA, 2008.

Pictures from the Test

Two Kinemetrics Episensors mounted on the rock next to the dam:

The dam seen from the high water level side:

The dam seen from the high water level side:

The dam seen from the low water level side:

The dam seen from the low water level side:

Mounting of accelerometers inside the dam:

 

 


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