Post on 24-Feb-2016
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Improving track design to reduce life cycle costs
А.J. Abdurashitov Branch Manager of OJSC VNIIZHT, Ph.D.
VNIIZhT (OJSC “Russian Railway Transport Research Institute”)
The strategy of development of railway transport in the Russian Federation up to 2030 envisages increasing amount of freight traffic by about 40%. One of the objectives is to bring between overhauls tonnage by 2015 to 1.5 billion tonnes gross, and by 2030 to 2.5 billion tonnes gross. To achieve these parameters is necessary to develop more sophisticated design elements of the track’s permanent way.
When choosing the design of the way the main criteria are the cost and duration of the life cycle.
General states
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Passenger from 160 to 200 km/h
Freight up to 90 km/h
Passenger - 250 km/h
Freight - 90 km/h
400 km/h
Scheduled for future track network of OJSC "Russian Railways" with heavy haul,
fast and high-speed traffic
New high-speed tracks for passenger traffic with speeds up to:
Fast tracks with combined traffic,including heavy haul, with trains speed:
Combined traffic high-speedtracks with trains speed up to:
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Comparison of change in length of track with continuous welded rails by year on Siberian and Far Eastern railways and on the network as a whole
The area in which continuous welded rails has been laid is increasing and it currently accounts for 67.1% of the total length of railway network’s main lines.
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26,2 27,1 27,5 28,0 28,8 29,5 30,6 31,8 33,135,0
37,541,2
43,946,8
49,852,8
55,559,4
62,064,5
67,1
0,6 0,7 0,9 1,3 1,8 2,5 3,5 4,3 5,3 6,3 7,3 8,5 9,8 10,7 11,9 13,0
0
10
20
30
40
50
60
70
1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012
проц
енты
от о
бщей
про
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ЖД
Годы
Сеть ЖД
Сибирь и ДВ
Years
Perc
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ay li
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Russian Railways network
Siberia and Far East
Operational conditions on Russian railways
The Russian Federation is characterised by a variety of building and operating conditionsDepending on their geographic and climatic location, construction zones are defined: - according to the relief conditions – from plains to mountainous areas- according to geological factors – from swampy land to rock foundations- according to type of climate – from subtropical to Arctic.Maximum daily temperature range: 40°СMaximum annual temperature range: 120°СNumber of days per year with temperature < 0°С: 221.1.Occurrence of snowstorms and snowdrifts.
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Analysis of the slab track in testing facility of OJSC "VNIIZhT" in Scherbinka
Section of slab track RHEDA -2000 and LVT
RHEDA-2000
LVT
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surfacing and lining work on track and switches
17%
Lubrication,fixing and replace-ment of defec-
tive clips53%
The remaining scheduled work
11%
Monitoring, measurements and inspections of tracks, rails and switches
19%
Distribution of track maintenance major works of the high-speed track sections
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Clips for fast and high-speed tracks on the Moscow-St. Petersburg line
Pandrol(8 elements)
Vossloh(8 elements)
ARS(8 elements)
KB(19 elements)
Maintenance cost of1 km of track per year:
- KB - 1 897 €.- ARS - 375 €.- PANDROL - 0 €. - VOSSLOH - 0 €.
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Ensure the strength and stability of tracks with continuous welded rails
during the life cycleRemote monitoring of the rails with independent measurement systems
with function of the track work analysis
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Part of the curve with ballast fixed by polymeric binder
Sleepers with high shear stability
Reinforced tracks with continuous welded rails in Siberia
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Sleepers Sh3-K for the curves of small radius with clips ZhBR-65
Testing track section with sleepers Sh3-K with gauge
1530 mm at the Dalnevostochnaya railway R
= 246 m
Testing track section with sleepers Sh3-K with gauge 1535 mm at the
Dalnevostochnaya railway R = 240 m 6 curves of small radius placed in Privolzhskaya railway
Wear reduction compared to thewooden sleepers in 2 times
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New materials and technologies to strengthen sub-ballast
Placing reinforcement cage into the ballast of transition track section
Modeling of the stress-strain state of reinforced track
foundation
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Prevent damage of the rolling stock with ballast particles
Polyurethane coating is applied to the surface of the ballast and prevents it from being moved by air wave created by the passage of
high-speed trains.
The technology of using adhesives in the ballast used on high-speed line Moscow-St. Petersburg
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1.The main criterion in selecting a track design is the cost and the length of the life cycle.
2.The main track design on Russian railways, including those in Siberian areas, is continuous welded rail on reinforced concrete sleepers.
3.Railway track in Russia is operated in difficult climatic, engineering and geological conditions which are taken into account in the selection of the parameters for building and fitting track.
4.The main objective is to reduce costs for the rail clips. This is priority way for cooperation.
5.Integrated measures have been carried out to lengthen the service life of the rails to 1.5 billion tonnes gross.
Conclusions
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THANK YOU FOR YOUR INTEREST!