Key words
(English)
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Dams, Concrete dams, Arch dams
Dynamic, Resonance, Resonance frequencies, Ambient vibrations
Experiments, In-situ measurements
System identification
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Short description
(English)
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The objective of this project is to obtain the dynamic characteristics of large dams by way of in-situ measurements. In a first phase, a one-year program of ambient vibration tests has been initiated at Mauvoisin's arch dam where the low-amplitude natural frequencies and associated mode shapes are being obtained as a function of the reservoir level.
In a second phase, a permanent measurment system must be installed
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Publications / Results
(English)
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· Ambient vibration testing of Mauvosin dam - Phase 1: Water level 1849 m, EMPA, 15.6.95
· Ambient vibration testing of Mauvosin dam - Phase 2: Water level 1924 m, EMPA, 28.7.95
· Ambient vibration testing of Mauvoisin dam - Phase 3: Water level 1956 m, EMPA, 16.11.95
· Ambient vibration testing of Mauvoisin dam - Phase 4: Water level 1963 m, EMPA, 12.1.96
· Ambient vibration testing of Mauvoisin dam - Phase 5: Water level 1912 m, EMPA, 17.12.96
· Ambient vibration testing of Mauvoisin dam - Phase 6: Water level 1962 m, EMPA, 20.12.96
· Vibration tests of large dams (incl. 2 addenda) , C.E. Ventura & T. Horyna, Report UBC, Dec. 1996
· Ambient vibration testing of Mauvoisin dam - Phase 7: Pilot measurements for dam monitoring, Water level 1959 m, EMPA, 05.06.97
· Ambient vibration tests at the dam of Mauvoisin, C.A.M. de Smet, C. Krämer and G.R. Darbre, 16th int. modal analysis conf., Santa Barbara, Feb. 2-5, 1998
· Ambient vibration testing of Mauvoisin dam - Final Report Phase 1 through 7, EMPA, 27.11.98
- Natural frequencies measured from ambient vibration response of the arch dam of Mauvoisin, G.R. Darbre, C.A.M. de Smet, C. Kraemer, Earthquake eng. struct. dyn., accepted 1999.
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