One Corps Serving the Armed Forces and the Nation Mel Price Locks & Dam Miter Gate Inspections...

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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

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

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

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

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

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

0 200 400 600 800 1000 1200 1400 1600 1800

Time (sec)

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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