Testing Post-Tensioned Steel Trunnion Rods for the U. S. Army ...

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Dispersive Tension EquationAfter per<strong>for</strong>ming lift-off tests, <strong>the</strong> Dispersive TensionEquations (DTE) were derived (1 st generation):“Long” Live-End Lengths (as West Point)T 181.8 * f1 123.1*C 24.55 * f1 2 0.67 * f 2 2 1099 * f 2 f 2f1 7.73* f1* f 2 2.272 * f1*C 14746.56“Short” Live-End Lengths (as RF Henry)T 12245.4 10.4C 0.0027 f 1 0.0019 f 2 4.9615 f 1 0.0179L 18888.0d 7314.7d 2 f 2
DTE Results – West Point, GA+ 8.6 k- 8.6 kMeasured (Known) Load (kips)West Point Standard Error : +/- 8.6 kips
Page 1 and 2: Testing Post-Tensioned Steel Trunni
Page 3 and 4: The Problem• Some Catastrophic Ro
Page 5 and 6: Background on the Testing Method•
Page 7 and 8: The Nondestructive Field Testing“
Page 9 and 10: Accessibility Issues
Page 11 and 12: Tackling AccessibilityEach rod had
Page 13 and 14: Allows for modeling ofmany damconfi
Page 15: DWP Response with TensionRobert F.
Page 19 and 20: Greenup, KY104 rods testedIdentifie
Page 21 and 22: Thank You !
Page 23 and 24: Greenup ResultsMost rods ~50 Hz10 3
Page 25 and 26: Trunnion Assembly ResultsRod typica
Page 27 and 28: Results - Trunnion PrototypeMany te
Page 29 and 30: Liftoff Tests Results• West Point
Page 31 and 32: Length (in)R. F. Henry DataResponse
Page 33 and 34: FDH Approach to Trunnion Rods• No
Page 35 and 36: Current Approach• Measure all rod
Page 37: Thank you
Page 44: Greenup Rods• Grip nut integralwi
Page 47 and 48: Slipped Grip Nuts at R. F. Henry•
Page 49 and 50: West Point Dam
Page 51 and 52: Greenup, KY Dam
Page 53 and 54: R. F. Henry Trunnion Rods21 rods pe
Page 55 and 56: Lift-Off TestsOn site practice lift
Page 57 and 58: • Rods also tested by“Listening
Page 59 and 60: West Point ResultsCollectedaccelera
Page 61 and 62: R. F. Henry DamR. F. Henry rods hav
Page 63 and 64: Greenup Trunnion Rods52 rods per gr
Page 65 and 66: West Point ResultsObserved response
Page 67:
Trunnion Anchor Rod AssemblyTransfe
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Testing Post-Tensioned Steel Trunnion Rods for the U. S. Army ...

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