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|Title:||Operating forces on sector gates under reverse heads. Appendix A, Results of supplemental tests : hydraulic model investigation|
|Authors:||United States. Army. Corps of Engineers. New Orleans District.|
Oswalt, Noel R.
Murphy, Thomas E.
|Publisher:||Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical report (U.S. Army Engineer Waterways Experiment Station) ; H-70-2 app.A.|
Abstract: Subsequent to the model tests discussed in the basic report, certain revisions were made to the improved sector gate for structural reasons. In these revisions the curved horizontal girders were placed in back of the skin-plate ribs so that the skin plate would not act as part of a main beam, and the timber fenders were extended to within 8 in. of the full radius of the gate for safety reasons. The first gate incorporating these revisions was designed for replacement of the existing gates at Vermilion Lock. One leaf of the model of the improved sector gate was modified to reproduce the Vermilion gate at the nose of the gate leaf. This gate leaf was tested at a scale of 1:20 in the facilities and by the procedures described in the basic report. Results of this series of tests demonstrated again that the major loads on the gate are caused by members in the immediate vicinity of the skin plate at the miter noses of the gate leaves. The addition of the 8- by 4- by 1/2-in. angle that blocked side flow at the miter edge of the skin plate was the primary reason for forces on the gate tested in this series being several times greater than those observed with the improved sector gate in the basic report. The timber bumper fenders, which are offset from the skin plate, had a negligible effect on forces.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|
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|TR-H-70-2-Appendix-A.pdf||1.65 MB||Adobe PDF|