Infrastrucure presentation VZNERRAC PLENARYInfrastrucure presentation VZNERRAC PLENARY

11

http://www.errac.orgRailway Infrastructure for the Railway Infrastructure for the

Twenty First CenturyTwenty First Century

John AmooreNetwork Rail and ERRAC

Delivering the vision

•By 2050 the majority of medium-distance 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

high levelstatement

high levelrequirements

specific needs

projects to deliver the specificneeds

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 demandCheap and plentiful labourLess concern for safetySlow 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

Rail

Sleeper + Ballast

Ground

CONTACT CONTACT

X

Z

Y

M, Ixx

m, Ixx

Rail

Rail

Sleeper +

Ballast

Ground

Rail

Sleeper +

Ballast

Rail

Sleeper +

Ballast

Rail

Sleeper +

Ballast

Ground

CONTACT CONTACT CONTACT CONTACT

X

Z

Y

M, Iyy

m, Iyy m, Iyy

V

Tread/top of rail Damge Index, mu=.45

0

50

100

150

200

250

0 500 1000 1500 2000 2500 3000 3500

Curve Radius (m)

T-G

am

ma

Nm

/m

8 MN/Rad 12 MN/Rad 16 MN/Rad 24 MN/Rad 32 MN/Rad

48 MN/Rad 64 MN/Rad

Tread/top of rail Damge Index, mu=.45

0

50

100

150

200

250

0 500 1000 1500 2000 2500 3000 3500

Curve Radius (m)

T-G

am

ma

Nm

/m

8 MN/Rad 12 MN/Rad 16 MN/Rad 24 MN/Rad 32 MN/Rad

48 MN/Rad 64 MN/Rad

Tread/top of rail Damge Index, mu=.45

0

50

100

150

200

250

0 500 1000 1500 2000 2500 3000 3500

Curve Radius (m)

T-G

am

ma

Nm

/m

Tread/top of rail Damge Index, mu=.45

0

50

100

150

200

250

0 500 1000 1500 2000 2500 3000 3500

Curve Radius (m)

T-G

am

ma

Nm

/m

8 MN/Rad 12 MN/Rad 16 MN/Rad 24 MN/Rad 32 MN/Rad

48 MN/Rad 64 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