Embed Size (px)
Citation preview
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationPrepared for the Board of Directors
November 15, 2018
Gregory ShivyPrincipal Track Engineer, M&E
Charles FranzVehicle Systems Engineer, RS&S
November 2018
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationConversion Recap
November 2018 Slide 1
BART Cylindrical
BART Tapered BT-3Gauge Face Wear (rail)
Flange Wear (wheel)
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationDamage Mechanisms
RCF; Rolling
Contact Fatigue
Corrugation
Shelling
Gauge Face Wear
November 2018 Slide 2
BART Wheel / Rail OptimizationWheel Conversion Effort
634 Cars Converted, 95% of fleet
Monitoring 25 cars for profile wear patterns.
November 2018 Slide 3
0.0000
0.0500
0.1000
0.1500
0.2000
0.2500
Flange ThickenessWear/Year
Flange HeightGrowth/Year
Max Profile Wear/Year Tread Hollowing/Year
Wear Rates
CYL BT3
86%
21%
67%
85%
BART Wheel / Rail OptimizationWheel Monitoring – Profile Contacts
November 2018 Slide 4
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationWheel Monitoring – Ride Quality
November 2018 Slide 5
Lateral
accelerations
Speed
Vertical
accelerations
Threshold limits
Threshold
exceptions
BART Wheel / Rail OptimizationWheel Monitoring - Dynamics
November 2018 Slide 6
TOTAL COST Total Cost $ 3,367,698 100%
$ Cost / Inspection $ 250,875 7%
$ Cost / Retruing $ 285,195 8%
$ Cost / Refurbishment $ 1,811,775 54%
$ Cost / Replacement $ 1,019,853 30%
# Total Dwell Hours 17,142
BART Wheel / Rail OptimizationWheel Monitoring - Cost
November 2018 Slide 7
Old Cylindrical
Projected BT-3
TOTAL COST Total Cost $ 5,227,516 100%
$ Cost / Inspection $ 250,875 5%
$ Cost / Retruing $ 504,540 10%
$ Cost / Refurbishment $ 2,718,250 52%
$ Cost / Replacement $ 1,753,851 34%
# Total Dwell Hours 26,229
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationGrinding Progress
November 2018 Slide 8
Track 1 Track 2
81 miles ground to interim profile, 40%
130 miles remaining, 63%
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationRail Monitoring
November 2018 Slide 9
Track 1 Track 2
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationRail Monitoring
November 2018 Slide 10
BART Wheel / Rail OptimizationNoise Improvements
November 2018 Slide 11
BART A/B-Car RehabilitationLessons Learned
BART Wheel / Rail OptimizationNoise Improvements
November 2018 Slide 12
0
5
10
15
20
25
30
35
40
45
Dec-1
5
Jan
-16
Fe
b-1
6
Ma
r-1
6
Ap
r-16
Ma
y-1
6
Jun
-16
Jul-
16
Au
g-1
6
Se
p-1
6
Oct-
16
Nov-1
6
Dec-1
6
Jan
-17
Fe
b-1
7
Ma
r-1
7
Ap
r-17
Ma
y-1
7
Jun
-17
Jul-
17
Au
g-1
7
Se
p-1
7
Oct-
17
Nov-1
7
Dec-1
7
Jan
-18
Fe
b-1
8
Ma
r-1
8
Ap
r-18
Ma
y-1
8
Jun
-18
Jul-
18
Au
g-1
8
Se
p-1
8
Oct-
18
Insta
nce
s o
f C
usto
me
r N
ois
e C
om
pla
ints
Customer Noise Complaints by Line
Unclassified
C
M
R
A
S
L
K
W
Y
Grand Total
2 per. Mov. Avg.(Grand Total)
Began Wheel Reprofiling
Began Rail Reprofiling
73% Since July 2017
BART A/B-Car RehabilitationLessons Learned
Presented at WRI, Wheel Rail Interaction Conference 2018
200+ industry professionals discussing advances, technologies, and best practices in
wheel / rail contact mechanics, dynamics, and vibration.
Participation in NYCT / FTA study on #7 Flushing Line wheel geometry
Hosting London Underground Sr. Wheel / Rail Engineer for a
demonstration of our efforts
Interest from several other agencies including CTA, and MBTA in how
to better their systems
BART Wheel / Rail OptimizationIndustry Interest & Participation
November 2018 Slide 13
Continue with wheel and rail conversion and monitoring effort
Grinder refurbishment
Friction Modification study
Wheel condemning limits / lifecycle analysis
Advanced measurement technologies
Instrumented wheelsets – track performance measurements from railcar
Wayside detectors – railcar performance measurements from track
BART Wheel / Rail OptimizationNext Steps
November 2018 Slide 14
