CS-29 Black Bayou Culverts, Calcasieu Parish, Louisiana, 1:4 Scale Model Study of Culvert Flap Gate, October 2005 - April 2006

摘要

A 1:4 scale Froude-based hydraulic model of a single box culvert with flap gate was studied in Reclamations Water Resources Research Laboratory. The main focus of the study was on verification of the operating characteristics and head loss associated with the light-weight aluminum flap gate that is being specified for the CS-29 Black Bayou culvert structure. The flap gates were found to operate with very low head loss within the range of operations expected at the Black Bayou Site. Data were compared to prior studies. The use of light-weight flap gates, while having low head loss characteristics, will likely require some onsite adjustments of gate buoyancy. In addition, since only a single barrel was modeled in the laboratory, the effects of having 10 side-by-side box culverts with flap gates may also require gate buoyancy to obtain expected performance of the structure.