one corps serving the armed forces and the nation mel price locks & dam miter gate inspections...

One Corps Serving the Armed Forces and the Nation

Mel Price Locks & Dam Miter Gate Inspections

Navigation Lock and Dam Inspection and Emergency Repairs Workshop 18 - 20 April 2006


Navigation Lock and Dam

Inspection

and Emergency Repairs Workshop 18 - 20 April 2006


3 October 2004 – Auxiliary LockDownstream Miter Gate


Auxiliary Lock Downstream Miter Gate


FLO

W

IL LEAF MO LEAF

Leafs Forced Downstream FromNormal Mitered Position


Initial Inspection

• Determine scope of damage

• Gather “forensic evidence”


Overall Distortion – Approximately 2 Feet


Local Damage – Miter Ends


Damage to Gate Anchorages

Secondary Anchorage

Primary Anchorage


Primary Anchorage

Fatigue


Secondary Anchorage

Deflection


Miter Block – IL Leaf


Timber Fender – MO Leaf


Miter Block – IL Leaf


Diagonal Failure - Buckled


Cracked Gusset – IL Leaf


Cracked Gusset – MO Leaf


Failed Operating Struts


Operating Arm Failure Tube

Failure Bolts(compression)


Operating Strut Failure – IL Leaf

Failure Bolts (compression) Intact

Fractured Strut(tension)


Failure Bolt(compression)

Fractured Strut(tension)

Operating Strut Failure – MO Leaf


Failed Operating Strut


Impact Marks


Gouged Operating Strut


Failure Tube Bolts


Inspection of Leafs

On GateBarge


Surveying Leaf


Survey Results – Illinois Leaf

2’

1’

1.5’

0.5’

2.21’ max deflection


Survey Results – Missouri Leaf

1.6’ max deflection


Manliftfor

Inspection


InspectionFrom

Manlift


Deformed Diaphragms

Over 2” In Some Locations

(most ½” orless)


Inspections - Leafs Horizontal


Leafs In Horizontal Position


Crack at Diaphragm Flanges


Crack in Girder Flanges


Torch Cut Hole in Girder Flange


Inspection of Repairs


UT Inspection of Diagonal Gusset


Welding Strut Arm at Service Base


MT Inspection of Strut Arm at Shop


UT Inspection of Strut Arms


UT Testing Of Repaired Cracks


Diagonal Modification


Lower Diagonal Gusset


Stress Relieving Diagonal Gusset


Top End of Diagonal


Bottom End of Diagonal


Bottom End of Diagonal

Undercut


Gudgeon Hood Casting


Casting Weld Repair Defect


Stay Tuned…………….

Mel Price Lock and DamMiter Gate Inspections


Inspections - Other Projects


Locks 27 - Miter Gate Inspections and Instrumentation


Locks 27 – Auxiliary Lock Miter Gate


Cracks in Girder Flanges


Sill

VerticalDiaphragms

BottomGirder

Designed as horizontallyframed


Instrumentation of Typical Connection


Diaphragm Flange

Girder Flange

Strain Transducer


Lock 27 - Aux Lock - Illinois Leaf - 23 Aug 01 - Test 2

-3

-2

-1

0

1

2

3

4

5

6

7

8

0 200 400 600 800 1000 1200 1400 1600 1800

Time (sec)

Str

ess

(ksi

)

Diaphragm Flange Stress

Girder Flange Stress

Instrumentation Results

Stresses Higher in Diaphragm


Lock 27 Miter Gate Instrumentation Results

Diaphragm

• Flange 8 ksi T

• Web 4 ksi T

Girder

• Flange 7 ksi T

• Web 3 ksi C


Locks 27 - Main Lock – Jan 2003


Locks 27 - Main Lock – Jan 2003Failed Diagonal Rods


Why are rods failing?1) Cyclic loading (beach marks = fatigue)2) Bending (Unidirectional - beach marks on one side)


Instrumentation of Diagonals


Instrumentation on Diagonals


Instrumentation Results

One Lockage = Many Cycles


Rope Access Inspections

• Tainter gates at flood control projects

• Tainter gates at navigation project

• Dam bulkheads

• Miter gates


Clarence Cannon Dam

Spillway and Tainter Gates


Locks 27 Miter Gate


Kaskaskia L&D Tainter Gate


Carlyle Dam Tainter Gate


Questions?

one corps serving the armed forces and the nation mel price locks & dam miter gate inspections...

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