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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 Lock Downstream Miter Gate.

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slide1

Mel Price Locks & Dam Miter Gate Inspections

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

slide2

Navigation Lock and Dam

Inspection

and Emergency Repairs Workshop 18 - 20 April 2006

slide5

Leafs Forced Downstream From

Normal Mitered Position

IL LEAF

MO LEAF

FLOW

initial inspection
Initial Inspection
  • Determine scope of damage
  • Gather “forensic evidence”
slide9

Damage to Gate Anchorages

Secondary Anchorage

Primary Anchorage

operating arm failure tube
Operating Arm Failure Tube

Failure Bolts

(compression)

slide20

Operating Strut Failure – IL Leaf

Failure Bolts

(compression)

Intact

Fractured Strut

(tension)

slide21

Operating Strut Failure – MO Leaf

Failure Bolt

(compression)

Fractured Strut

(tension)

inspection of leafs on gate barge
Inspection of

Leafs

On Gate

Barge

slide29

Survey Results – Illinois Leaf

2.21’ max

deflection

2’

1.5’

1’

0.5’

slide33

Deformed Diaphragms

Over 2” In Some Locations(most ½” orless)

slide60

Vertical

Diaphragms

Bottom

Girder

Sill

Designed as horizontally

framed

slide62

Diaphragm Flange

Strain Transducer

Girder Flange

slide63

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

Lock 27 Miter Gate Instrumentation Results
slide67

Why are rods failing?

1) Cyclic loading (beach marks = fatigue)

2) Bending (Unidirectional - beach marks on one side)

slide70

Instrumentation Results

One Lockage = Many Cycles

rope access inspections
Rope Access Inspections
  • Tainter gates at flood control projects
  • Tainter gates at navigation project
  • Dam bulkheads
  • Miter gates
slide72

Clarence Cannon Dam

Spillway and Tainter Gates