Transcript SRRA Update - vniizht.ru

Railway Infrastructure for the
Twenty First Century
http://www.errac.org
Infrastrucure presentation VZNERRAC PLENARY
John Amoore
Network Rail and ERRAC
1
Delivering the vision
high level
statement
high level
requirements
specific needs
projects to deliver the specific
needs
•By 2050 the majority of mediumdistance passenger and freight
transport should go by rail.
•This will require the development of appropriate
railway system – high capacity, low maintenance,
and reliable
•Resilient infrastructure
•Less damaging train track interaction
•Automated maintenance and Automatic Train
Control
•Supporting sub projects - always changing
Contents
• Infrastructure needs
– High capacity
– Low maintenance
– Reliable
– Resilient
– Automated
• New track forms
• A system for upgrading existing tracks
Shortcomings of
traditional track forms
• The origins of modern track were
developed for a different world
Low demand
Cheap and plentiful labour
Less concern for safety
Slow and lighter trains
• Today
– Travel for business and leisure regarded
as an essential freedom
– The traveller has choices of mode
Needs for the future
railway
• Railway has potential for less environmental impact,
less congestion, safe, fast, providing a working or
leisure environment for passengers and secure and
efficient freight services
• Vision
– In many ways today's railway fails to meet the
vision of a convenient, uncongested, affordable
transport mode
– WHY?
• An 18 car TGV can transport 750 passengers,
but train separation and dwell time at stations
and bottle necks at nodes reduces passengers
per hour per track to 12000
• CAPACITY is a problem to address
Capacity
• Modern train control systems could permit
trains to travel in convoy, but the limiting
factor is not how close trains can run, but the
maximum no of trains through a node.
• High throughput stations – multi platform, two
or three level
• Reliable and fast switches
• Maintenance free track – slab or hybrid
design
• Inspection, sensors and predictive
maintenance
Capacity
• Maintenance free track – slab or hybrid
design
• Inspection, sensors and predictive
maintenance
Needs
• A high capacity railway will reduce
congestion, but if we do not reduce
infrastructure degradation rates, train
operations will be severely reduced to
allow time for maintenance
• AVAILABILITY is a major issue
Availability
• The major cause of low availability is the time
lost to track maintenance. Other serious loss
of availability is due to system failure, either
through natural causes such as extreme
weather events, or unreliable components
• Inspection, sensors and predictive
maintenance for infrastructure and vehicles
• Improved train track degradation models to
predict and optimise maintenance
interventions
• Maintenance free track – slab or hybrid
design
New track concepts
Requirements
•Affordable first cost
•Low LCC
•Self monitoring
•95% availability
Modelling tools for asset
management
Tread/top of rail Damge Index, mu=.45

V
250
M, Iyy
M, Ixx
T-Gamma Nm/m
200
m, Iyy
m, Iyy
m, Ixx
150
100
50
CONTACT
CONTACT
CONTACT
CONTACT
Rail
Rail
Rail
Rail
Sleeper
+
Ballast
Sleeper
+
Ballast
Sleeper
+
Ballast
Sleeper
+
Ballast
CONTACT
CONTACT
Rail
Rail
Sleeper
+
Ballast
Y
0
0
500
1000
1500
2000
2500
3000
3500
Ground
X
Z
Y
Ground
X
Ground
Z
Curve Radius (m)
8 MN/Rad
12 MN/Rad
48 MN/Rad
64 MN/Rad
16 MN/Rad
24 MN/Rad
32 MN/Rad
Needs
• If customers are to have complete
confidence in a rail dependant transport
system then the system must be
resilient, recovering quickly from the
most severe disruptive events, whether
natural or system failures
• RESILIENCE is a major issue
Resilience
• A highly resilient infrastructure will be largely
independent of ground conditions, flooding,
rail buckling due to high temperatures and
severe winds. Power and communications
systems will include redundancy and may be
housed within an integrated track structure.
Losses due to inductive power supplies may
be acceptable if the energy supply is carbon
free and the improved resilience and longer
life produces a lower whole life cost
• Non contact electric power
Needs
• The railway is a system of systems
• Hundreds of trains operate on
thousands of kilometres of track on
each national network. Understanding
the condition of all the infrastructure
assets requires the acquisition and
management of massive quantities of
data
• DATA MANAGEMENT is a major issue