Track Maintenance

1

MEASUREMENT OF THE TRACK GEOMETRY

MARCH 2015 Research, Planning & Coordination Department 2

MEASUREMENT OF THE TRACK GEOMETRY


Measurement of the track geometry.

Measurements have done EN 13848 standarts.

So measurement saparate two topic,

1) Geometric measurement

2) Dynamic measurement

MEASUREMENT OF TRACK GEOMETRY GEOMETRİC MEASUREMENT


1) Geometric Measurement

This measurement have done seven parameters,

a)Location

b)Right Longitundial level

c)Left Longitundial Level

d)Right Alignment

e)Left Alignment

f)Twist

g)Cant

MEASUREMENT OF TRACK GEOMETRY GEOMETRİC MEASUREMENT


a)Location: Location seen Kilometers Location + Meters Location

For example 300+450, means measurement location is 300 Km and 450 meter.

b)Right Longitundial Level: Means; increase the kilometre direction, on right rail of track measure two point height level difference.

c)Left Longitundial Level : Means; increase the kilometre direction, on left rail of track measure two point height level difference.

d)Rigt Alignment : Means increase the kilometre direction, espeacially in to curve right rail and straight line right rail two point versine deference.

e)Left Alignment : Means increase the kilometre direction, espeacially in to curve left rail and straight line left rail two point versine deference.

f)Twist: Means cross section surface three point is true dimensions but one point is not true point.

g) Cant :Means in the curve diffrense height level of short rail and long rail.

MEASUREMENT OF TRACK GEOMERTY MEASUREMENT TOOLS


Expectations of a measurement vehicle

Track measurement vehicle that be attuned to today’s technology

must take into account amplitude and phase convinience when

measuring.

Measurement vehicles with multiple functions

In last years there is a certain inclining to multiple function

vehicles.

These vehicles measure the track parameters while considering

them at the same time.

It is logical that all paramaters that belongs to other specialties is

measured by one vehicle .

MEASUREMENT OF TRACKS GEOMETRY GEOMETRİC MEASUREMENT TROLLEY


Crabb Measurement Troleys

MEASUREMENT OF TRACK GEOMETRİC MEASUREMENT


Example Of Geometric Measurement Graphics

MEASUREMENT OF TRACK GEOMETRY GEOMETRIC MEASUREMENT VEHICLES


Roger 800;

120 Km/h Geometric Track and Catenary Measurement Machine



Track Geometry Measurement

• Track Gauge

• Alignment

• Twist

• Cross Level

• Longitudinal Level

• Rail Profile Measurement

• Rail Profile

• Rail Wear

• Wheel/Rail Contact Geometry

Signalling

• Radio Communication System

• Coded Current Automatic Block –

BACC

• ETCS & SCMT Eurobalise

• SSC Trasponder

• Wireless Communication Networks

Localization System

• Data Depot System

Track Measurement & Inspection

• Condition of rail fastenings (V•CUBE)

• Rail running surfaces (V•CUBE)

• Sleepers (V•CUBE)

• Ballast bed and signalling equipment on the

track (V•CUBE)

• Track Head Inspection

• Fishplate Inspection

Rail Corrugation Measurement

• Short, Medium and Long Wavebands

Components

Overhead Line Measurement & Inspection

• Overhead Line (OHL) Geometry

• Contact Wire Wear

Video Inspection

• Overview video from the perspective of a

locomotive driver

Tunnel & Clearance Measurement

• Tunnel Clearance Gauge

• Clearance Gauge of Railway Structures

ROGER 800

Measuring systems



Geometric Track Measurement Trains For High Speed Tracks



Standart and optional measuring systems on PİRİ REİS

Characteristics of TCDD High Speed train

�Operational measuring speed 250 km/h

�CAF train model YHT65001

�6 units train

�1st unit totally dedicated to measuring

equipment / meeting area

�6th unit modified for integration of systems

for bi-directional operations

Characteristics of TCDD High Speed train

�Operational measuring speed 250 km/h

�CAF train model YHT65001

�6 units train

st�1 unit totally dedicated to measuring equipment / meeting

area

th�6 unit modified for integration of systems for bi-directional

operations



Track Geometry Parameters

• �Kilometrical ground

measurement

• Measurement Speed

• Signs for structures such ad

bridges, tunnels, switches

• Left & Right leveling

• Line clearance and

differences (rail distance)

• Cant and Criss-cross level

• Left and Right rail flash

• Bending

• Curve values




Rail Profile

This system gives information on the

wearing of the Rail. It is the

basic information used to keep the quality

of the ride over the

defined thresholds.

Parameters

�Left & Right rail interiors section profile

�Left & Right rail vertical wear

�Left & Right rail horizontal wear

�Left & Right rail wear at 45°angle

�Internal holes of the Left & Right rail

�The wear percentage of the Left & Right

rail cork section (loss

of cork)




Video Inspection

Installed video view

�2 driver's sight (1 by coach)

�4 rear view (2 by coach and

1 by side)

�2 underframe for Wheel/Rail

Contact

�2 roof cameras for

pantograph interaction


LIMIT VALUES

TRACK MAINTENANCE


DESCRIPTION

MAİNTENANCE MACHİNES

MEASUREMENT MACHİNES

TRACK MAINTENANCE DESCRIPTION


Description

The track besides static and dynamic forces that effects the railway from track geometry operation loads, air condition and other foctors (like chemical and nature effects) effects the track.

Tracks have certain life cycle and in case of pass that time, tracks must be renewed or maintenance with railway maintenance machines.

The track measure and the faults find on the track than maintenance machines use solve this fault.

TRACK MAINTENANCE MAIN MAINTANENCE MACHINES


•Track Renew Machines

•Balast Cleaning Machines

•Tamping Machines

•Switch Tamping Machines

•Balast Regülator Machines

•Stabilizatör Machines

•Rail Grinding Machines

•Rail Welding Machines

TRACK MAINTENANCE MACHINES TRACK RENEWAL TRAINS


Track renewal trains

Track renewal trains changes rails and sleepers swiftly.

Track renewal train starts operation with enough sleepers

loaded to sleepers vagon. There is one empty vagon on

that train. Existing sleepers lifted to this empty vagon with

the support of crane. This crane lifts the new sleepers to

machine and machine lay the new ones to track. At the

same time the machine change rail on the track and lay

the new rail to the track.

TRACK MAINTENANCE MACHINES TRACK RENEWAL TRAINS VİDEO


TRACK MAINTENANCE MACHINES BALLAST CLEANING MACHINE


Ballast cleaning

Ballast cleaning machines takes polluted ballasts on

tracks and cleans ballast with sieves on the machine. It

lays the standard ballast ( 2-6 cm ) to the track and rolls

out the non-standart ballast and unclean materials.

It provides elasticity to track.

TRACK MAINTENANCE MACHINES BALAST CLEANİNG MACHİNES VİDEO


TRACK MAINTENANCE MACHINES DYNAMIC TRACK STABILIZATOR DGS


Dynamic track stabilizator DGS

Parameters that ensure track stabilizasion effect are,

Stabilization frequency

Hydraulic cylinder which effects vertical force to stabilization

aggregate

Process speed

Dynamic impact force

The first three parameters are configured freely on work process

however, dynamic impact is figured by stabilization aggregate’s

eccentric loads.

TRACK MAINTENANCE MACHINES TAMPING MACHINES


Tamping Machines

Tamping machines repair of longitundial level fault,

alignment fault, cant fault and twist fault on track. First

machine give axes and than repair it special tamping

unıts.

TRACK MAINTENANCE MACHINES TAMPING MACHINES VIDEO


TRACK MAINTENANCE MACHINES SWITCH TAMPING MACHINES


Switch Tamping Machines

The same procudure of tamping machines repairs but

this machine use switches.

TRACK MAINTENANCE MACHINES SWITCH TAMPING MACHINES VIDEO


TRACK MAINTENANCE MACHINES BALAST REGULATOR MACHINES


Balast Regulator Machines

Machine has some blades. Machine give balast profile of

platform with this blades.

TRACK MAINTENANCE MACHINES BALAST REGULATOR MACHINES VIDEO


TRACK MAINTENANCE MACHINES DYNAMIC TRACK STABILIZATOR DGS


Effects of stabilization frequency

Volume compressing with dynamic tamping stabilizator

Compressing between two sleepers and ballast shoulder

compressing is less effective then stabilization. Because

stabilization effects whole ballast area. It’s called volume

compressing. Volume compressing effects x-y-z axis.

Operation tool of stabilizator machine holds two rails with

vibrating aggregate. It applicates vertical load and track

vibrates horizontally.

Operation frequency could be figured as 0 or 45 Hz.

Generally it’s figured as 28-35 Hz.

TRACK MAINTENANCE MACHINES DYNAMIC TRACK STABILIZATOR DGS VIDEO


TRACK MAINTENANCE MACHINES RAIL GRINDING MACHINE


Rail grinding

Rail grinding shapes the rail as a new profile. It prelongs

the rail lifecycle. Rail grinding should be done after rail

amplitude reaches 0,05 mm for economic reasons.

TRACK MAINTENANCE MACHINES RAIL WELDING MACHINES


Rail Welding Machines

Rail welding machines welding two rails surface with

elektrik arc and flushbut systems.

TRACK MAINTENANCE MAINTENANCE STANDART AND WARNING LIMIT VALUES


Maintanence standart values and warning limit values

Values evaulate with EN 13231 Standarts.

Values called three forms IL, IAL, AL

When certain standard values crossed, There will be need a

plan for maintanance as soon as possible.

When certain warning limit values crossed, error point must be

repaired or slow course area must be organized at that point.

For track lay-out maintanance standart and warning limit

values are shown in figure on the next page.

TRACK MAINTENANCE MAINTENANCE STANDART AND WARNING LIMIT VALUES


For rail distance limit values are in order shown table below.

On narrow radius curves there will be need excessive rail

distance.

TRACK MAINTENANCE RAIL HEAD SECTION PROFILE MAINTENANCE ST. VALUES


Rail head section profile maintanance standart values

Intervene in the rail head is possible only if the defect effects

the high speed course, rail wheel or rail durability.

v

[km/s]

Acceptable radius

deviation

[mm]

120 < v ≤ 140 ± 1.5

140 < v ≤ 160 ± 0.7

v > 160 ± 0.5

TRACK MAINTENANCE MAİNTENANCE PERİOTS


Typical maintanance periods

Tamping 4-5 years

Grinding 1-3 years

Ballast gradation 12-15 years

Rail change 10-15 years

Wooden sleepers renewal 20-30 years

Concrete sleepers renewal 30-40 years

Fastenings 10-30 years

Ballast renewal 20-30 years

Soil amendment >40 years

TRACK MAINTENANCE NORMS


EN 13803-1 Track Design Parameters

UIC 722 İmproving of infrastructure

EN 13230 - Concrete Sleepers-General

EN 13674-1 Rail Standarts

EN 14730-1 Alüminothermit Welding Procodure Approve

EN 15085-2 The welding of railway vehicles and Components

EN 15594 Electrod Welding Of Rails Standarts

EN 14587-2 Flashbutt Welding Standarts

EN 14730-2 Alüminothermit Welder Levels

EN 14730-1 Alüminothermit Welding Approve

TRACK MAINTENANCE NORMS


EN 13848-1 Characterization of track geometry

EN 50215 Try Railway machine before instruction

EN 13848-2 Measuring devices-Track recording vehicles

EN 13848-3 Measuring Devices Of Railway Maintanence Machines

UIC 518 Railway Vehicles Tests of Dynamic and Safety

UIC 519 Calculation of Equivalence Conicity

UIC 712 Rail Defects

UIC 714 Track Clasification

UIC 703 Track Characteristics

UIC IF7-96 High Speed Lines Maintanence

Track Maintenance

Documents

measurement location

measurement saparate

track parameters

right rail of track

left rail of track measure

kmh geometric track

long rail

point height level difference