Flow-Induced Vibration Experiments for a 1:25-Scale-Model Flat Wicket Gate
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
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This report presents the studies conducted to determine the flow-induced vibrational response of a 125-scale flat gate model used for predicting the structural response of the prototype gate to be installed in the Smithland Dam on the Ohio river. Time- and frequency-domain structural responses are analyzed to evaluate the performance of the wickets, to understand the dynamic characteristics of these structures, and to predict the design loads for the prototype wickets. The effectiveness of river channel models used in the prototype and in the physical models to represent the open channel flow conditions in the actual river is also determined by comparing the vibrational response of wickets for three different channel configurations. These channel configurations include the open channel, the approach channel, and the flume configuration. Scale model tests are conducted to isolate the flow-induced forced response from the added mass effects on the gate dynamics. The operating deflected shape and the dry mode shapes are extracted to detect any possible resonant vibration problems.
- Civil Engineering
- Hydraulic and Pneumatic Equipment