Lateral In-Situ Stress Measurements to Diagnose Liquefaction
In-situ measurements of vessel behavior during lock … · 1 In-situ measurements of vessel...
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In-situ measurements of vessel behavior 1 In-situ measurements of vessel behavior during lock operation C. SAVARY, D. BOUSMAR, J.M. HIVER SPW, Hydraulic Research Laboratory
Transcript of In-situ measurements of vessel behavior during lock … · 1 In-situ measurements of vessel...
In-situ measurements of vessel behavior 1
In-situ measurements of vessel behavior
during lock operation C. SAVARY, D. BOUSMAR, J.M. HIVER
SPW, Hydraulic Research Laboratory
In-situ measurements of vessel behavior 2
Lock filling/emptying design
works cost ↔ filling duration mooring forces
In-situ measurements of vessel behavior 3
Lock filling/emptying design
Numerical modeling → water surface slope Representative of mooring forces ?
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Summary • Introduction • Seine-Scheldt project • Measurement set-up • Head losses and water slope • Vessel motion • Conclusion
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Seine-Scheldt project
Wallonia: • 4 new locks • 2 new weirs • Channel rectifications
CEMT Class Va (2000t)
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Seine-Scheldt project
• New locks: filling through
short culverts • Numerical model
– water slopes • Scale model
– head losses – velocity profile
• In-situ – vessel motion
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Summary • Introduction • Seine-Scheldt project • Measurement set-up • Head losses and water slope • Vessel motion • Conclusion
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Measurement set-up • Roselies lock • River Sambre • 112 m x 12,50 m • Lift 3,5m • Loop culverts
(no dissipation chamber) • Fixed bollards
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Measurement set-up
• Valves and gates position • Head in culverts • Water level (upstream, lock, downstream) • Vessel motion → 48 instruments
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Valves and gates position
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Head and water levels
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Vessel
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Vessel
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Measurement set-up • 3 days on site • 22 recording
(filling or emptying) • 12 asymmetric
(one valve only) • 12 with vessel → About 6 useful
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Summary • Introduction • Seine-Scheldt project • Measurement set-up • Head losses and water slope • Vessel motion • Conclusion
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Leveling measurement
-0.5
0.5
1.5
2.5
3.5
10:50 10:52 10:54 10:56 10:58 11:00 11:02 11:04 11:06 11:08
nive
au (m
)
ZamZavZmoy
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Leveling measurement
-10
-5
0
5
10
15
20
25
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Dis
char
ge (m
³/s)
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Leveling measurement
-10
10
30
50
70
90
10:20 10:30 10:40 10:50 11:00 11:10 11:20 11:30 11:40
But
terf
ly v
alve
ope
ning
(°)
Vam1Vam0Vav1Vav0
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Leveling measurement
-1
0
1
2
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Hea
d (m
)
HamH Cg0H Cg1H sasHav
Valve loss
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Head losses: valves
0.01
0.1
1
10
100
1000
0 10 20 30 40 50 60 70 80 90angle (°)
z
LencastreLewinHanrezVam0Vam1Vav0Vav1
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Water surface slope
-2
-1.5
-1
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0
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1
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2
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Wat
er s
urfa
ce s
lope
(1/1
000)
Sw - leftSw - rightSw
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Summary • Introduction • Seine-Scheldt project • Measurement set-up • Head losses and water slope • Vessel motion • Conclusion
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Vessel motion
-2.0
-1.5
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0.0
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1.0
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Slop
es (‰
)
Vessel, total stationVessel, GPSWater surfaceVessel, clinometer
Montana, 80m x 8.20m, empty
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Vessel motion
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Vessel motion
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
10:50 10:52 10:54 10:56 10:58 11:00 11:02
Slop
e (1
/100
0), v
esse
l dis
plac
emen
t (m
) Vessel inclinationLongitudinal displ.Lateral displ.
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Vessel motion
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
15:16 15:18 15:20 15:22 15:24 15:26
Slop
e (‰
)
Vessel, total stationVessel, GPSWater surface
Playboy, 95m x 9.50m, loaded 2.20m draught
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Vessel motion
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
15:16 15:18 15:20 15:22 15:24 15:26
Slop
e (1
/100
0), v
esse
l dis
plac
emen
t (m
) Vessel inclinationLongitudinal displ.Lateral displ.
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-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
14:08 14:10 14:12 14:14 14:16 14:18
Slop
e (‰
)
Vessel, total stationWater surface
Vessel motion
Cassidy, 110m x 9.50m, loaded 2.60m draught
Wave period: 50s vs 35s
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Conclusions
• In-situ measurements – Uneasy but interesting… still to be improved
• Vessel inclination close to water slope – Slopes found larger than expected (> 1/1000)
• Significant dynamic effects (loose lines) • Impact of vessel on water flow
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Thank you for your attention
