모형실험에 의한 장지간 트러스형 리프트 게이트의 진동 특성
Dynamic Characteristics of the Long Span Truss-Type Lift Gate by Model Test
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An experimental study of model truss-type vertical gate consisting of a truss and a plate was presented in this paper to examine the structural dynamicsof the gates. A 1:61 scale model was constructed for the 95 m prototype gate using an acrylic truss and an acrylonitrile butadiene styrene plate. The scaledmodel was tested in a 1.6 m wide concrete flume for two orientations to determine the effects of gate orientation on structural vibrations. Naturalfrequencies of the model gate was measured and calibrated with FEM predictions. Vertical vibrations were measured under various operationalconditions, including a range of bottom opening heights and different upstream and downstream water levels. The gate model with reverse direction waspreferred due to its low overall vibrational response and flow level combinations. The test results also provide a basic dataset for development ofoperations guidelines that minimize flow-induced vibrations of the gates.
Abstract
An experimental study of model truss-type vertical gate consisting of a truss and a plate was presented in this paper to examine the structural dynamicsof the gates. A 1:61 scale model was constructed for the 95 m prototype gate using an acrylic truss and an acrylonitrile butadiene styrene plate. The scaledmodel was tested in a 1.6 m wide concrete flume for two orientations to determine the effects of gate orientation on structural vibrations. Naturalfrequencies of the model gate was measured and calibrated with FEM predictions. Vertical vibrations were measured under various operationalconditions, including a range of bottom opening heights and different upstream and downstream water levels. The gate model with reverse direction waspreferred due to its low overall vibrational response and flow level combinations. The test results also provide a basic dataset for development ofoperations guidelines that minimize flow-induced vibrations of the gates.
참고문헌 (11)
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