New switch design as the tool to increase train traffic speeds
Doctor of Engineering, Prof. Boris Gluzberg Chief of Laboratory «Switch designs and technologies»
Railway Research Institute JSC “VNIIZhT”
Railway Research Institute JSC “VNIIZhT”
New switch design as the tool to increase train traffic speeds
Doctor of Engineering, Prof. Boris Gluzberg Chief of Laboratory «Switch designs and technologies»
Development objectives
1. Providing speeds on lines being reconstructed for speed and high-speed traffic
2. Speed increase at station entries
1. Providing speed on the lines being reconstructed for speed and high-speed traffic
Switch of R 65 type, 1/11, ( under the project 2956)and exchange track on its basis (project 2968) Design speed:on straight main line of the switch - 250 km/h; on side line – 50 km/h
7 | Switches| 10.2012| VNIIZHT
Speed increase of train traffic through switches (under the project 2726)
2 | Switches| 03.2012| VNIIZhT
Design speed trough the switch – 200 km/hSpeed through the upgraded switch – 220 km/h
Vibration of switch at speed of 220 km/h
Before modernization
After modernization
Speed increase of train traffic through switches (under the project 2750)
3 | Switches| 03.2012| VNIIZhT
Design speed through switch – 140 km/hSpeed after upgrade of the switch – 160 km/h
2. Increase in traffic speed at station entries
Dynamic-kinematical characteristics of typical projects of switches in Russian railways
4 | Switches| 03.2012| VNIIZhT
Rail type Switch grade Radii, m speed, km/h acceleration, m/s2 Parameter of loss of
kinenatic energy , m/s
switch Turnout curve Suddenly emerged
unredeemed
R65
1/9 300,000 200,060
25 0,160 0,241 0,120
40 0,412 0,617 0,191
50 0,643 0,964 0.239
R65
1/11 300,000 300,000
25 0,160 0,160 0,120
40 0,412 0,412 0,191
50 0,643 0,643 0,239
60 0,925 0,925 0,287
The rate of acceleration change when entering the turnout curve and in the body of passenger car
while passing turnout
5 | Switches| 03.2012| VNIIZhT
Rail type Switch grade Speed, km/h Rate of acceleration change (maximum), m/s3
Maximum acceleration in the body of car, m/s3
Passenger car ЦМВ
Freight car
R65
1/9
25 0,10 0,26 0,9
40 0,40 1,03 2,2
50 0,79 2,01 2,5
R65
1/11
25 0,07 0,18 0,9
40 0,27 0,69 1,9
50 0,53 1,34 2,2
60 0,91 2,32 2,6
Dynamic-kinematical characteristics of suggested turnouts
6 | Switches| 03.2012| VNIIZhT
Variant № Rail type
Switch grade
Minimal radii, m Speed, km/h
Unredeemed acceleration,
m/s2
Rate of acceleration change (maximum), m/s3
Maximum acceleration in the body
of passenger car, m/s;*
Passenger car
Freight car
1 Р65 1/9 275,000 40 0,448 0,29 0,75 1,9 2 Р65 1/11 400,000 50 0,482 0,39 0,90 2,0
60 0,693 0,68 1,73 2,23 Р65 1/14 600,000 50 0,322 0,26 0,67 1,6
60 0,463 0,45 1,16 2,170 0,630 0,72 1,84 2,1
4 Р65 1/15 620,000 60 0,450 0,44 1,12 2,070 0,610 0,70 1.78 2,1
5 Р65 1/15 690,000 60 0,40 0,39 0,95 1,870 0,55 0,63 1,60 2.0
Switch of Р65 mark 1/22Speed of movement on a straight main line - 250 km/h
Speed of movement on side line - 120 km/h
Offers to a cooperation
Team work in development of switches of flat marks for high speed traffic1
2 Industrial engineering in Russia of switch parts base on European producers
3Using VNIIZHT methods in research work, their aim is to improve design
speed of turnouts
CONCLUSIONS:
Effective use of switches for transportation can be increased due to increasing traffic speeds in the yard neck
It is possible to increase traffic speed on switches and its combinations at the branch, without yard neck reconstruction, with minimum costs through the use of new geometry of switch curves
It is possible to minimize the costs to increase train speeds on straight track of switch through its modernization directly on
tracks.
7 | Switches| 03.2012| VNIIZhT
Development of new and modernization turnouts in current operation is the effective tool to increase speed of trains
Thank you for your kind attention
9 | Стрелочные переводы| 03.2012| ВНИИЖТ
D.o.E., Prof. Boris Glusberg Chief of the «Switches» laboratory
Thank you for your kind attention!
D.o.E., Prof. Boris Glusberg Head of the «Switches» Laboratory
