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Doc No: DPD072.GN
Revision: March-09
© 2009
This document has copyright, which is owned by Sonneville International Corporation (SIC) and may not be reproduced, in
whole, in part, or in any form whatsoever without prior written authority from SIC. This document has been submitted on the
understanding that it will not be used in any way against the interest of SIC.
LOW VIBRATION TRACK (LVT)
Experience on viaducts
SONNEVILLE INTERNATIONAL CORPORATION
8109 Tis Well Drive, Suite 513
Alexandria, VA 22306, USA
Tel. +1 703 619 1530
Fax +1 703 619 1534
E-mail mail@sonneville.com
www.sonneville.com
Doc No: DPD072.GN
Revision: March-09
Low Vibration Track (LVT) – Experience on viaducts Page 2 of 5
While the longest extent of LVT is found in tunnels, which have traditionally constituted the
primary environment for slab track, LVT also benefits from a diverse and substantial experience
on viaducts.
LVT installations on viaducts include:
• 6.3 km on MTRC’s Lantau and Airport Railway in Hong Kong, where traffic started in
1998 with a 140 km/h train speed, 17 tons axle load and an anticipated 75 million tons
annual traffic.
A typical cross section is shown below.
• The inauguration of DART’s first line in Dallas, Texas took place within a few months
from the opening of MTRC’s Airport Railway and that line includes approximately 6 km
of LVT installed mostly in tunnels but also on a 85 m long, double track bridge over
Interstate Highway I30.
LVT has remained maintenance free both in the tunnels and on the bridge despite rail
temperatures varying from below freezing in the winter to above 140 °F (60 °C) in the
summer.
Part of that bridge is shown on the photograph that follows taken while trackwork was
still under way.
Doc No: DPD072.GN
Revision: March-09
Low Vibration Track (LVT) – Experience on viaducts Page 3 of 5
• In Brazil, the Unisinos-Sao Leopoldo extension of the Trensurb commuter line in Porto
Alegre involved the construction of 5 km (2.5 km double track) of LVT on viaducts.
Unreinforced track concrete was placed over the viaduct spans as shown on the
photograph below.
Revenue service started in 2000 with a 90 km/h train speed, 21 tons axle load and
20 million tons annual traffic.
Doc No: DPD072.GN
Revision: March-09
Low Vibration Track (LVT) – Experience on viaducts Page 4 of 5
• Line 2 of the Rio de Janeiro metro included the construction of a short section of
viaducts on which 1.0 km of LVT was built using unreinforced track concrete in the same
way as in Porto Alegre.
That line started operating in 1998 with a 70 km/h train speed, 17 tons axle load and
25 million tons annual traffic.
• KCRC in Hong Kong installed 1.4 km of LVT on viaducts on the West Rail line that
started operating in 2003 and approximately 1.2 km mostly within turnouts on viaducts
on the MOS extension of the East Rail line that started operating in 2004.
A typical cross section involving single plinths with reinforced concrete derailment
containment upstands and unreinforced track concrete is shown below.
Doc No: DPD072.GN
Revision: March-09
Low Vibration Track (LVT) – Experience on viaducts Page 5 of 5
• 2006 saw the completion of KCRC’s LMC Spur Line, where 3.2 km of LVT were installed
on viaducts.
For that project, the viaduct designers specified that 10 mm-wide joints be placed at
3.5 m intervals in the track concrete as shown on the photograph below taken prior to
final concreting. Because of the resulting longitudinal discontinuity of the track concrete,
fiber reinforced track concrete was used on viaducts for that project.

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Experiencia en Viaductos

  • 1. Doc No: DPD072.GN Revision: March-09 © 2009 This document has copyright, which is owned by Sonneville International Corporation (SIC) and may not be reproduced, in whole, in part, or in any form whatsoever without prior written authority from SIC. This document has been submitted on the understanding that it will not be used in any way against the interest of SIC. LOW VIBRATION TRACK (LVT) Experience on viaducts SONNEVILLE INTERNATIONAL CORPORATION 8109 Tis Well Drive, Suite 513 Alexandria, VA 22306, USA Tel. +1 703 619 1530 Fax +1 703 619 1534 E-mail mail@sonneville.com www.sonneville.com
  • 2. Doc No: DPD072.GN Revision: March-09 Low Vibration Track (LVT) – Experience on viaducts Page 2 of 5 While the longest extent of LVT is found in tunnels, which have traditionally constituted the primary environment for slab track, LVT also benefits from a diverse and substantial experience on viaducts. LVT installations on viaducts include: • 6.3 km on MTRC’s Lantau and Airport Railway in Hong Kong, where traffic started in 1998 with a 140 km/h train speed, 17 tons axle load and an anticipated 75 million tons annual traffic. A typical cross section is shown below. • The inauguration of DART’s first line in Dallas, Texas took place within a few months from the opening of MTRC’s Airport Railway and that line includes approximately 6 km of LVT installed mostly in tunnels but also on a 85 m long, double track bridge over Interstate Highway I30. LVT has remained maintenance free both in the tunnels and on the bridge despite rail temperatures varying from below freezing in the winter to above 140 °F (60 °C) in the summer. Part of that bridge is shown on the photograph that follows taken while trackwork was still under way.
  • 3. Doc No: DPD072.GN Revision: March-09 Low Vibration Track (LVT) – Experience on viaducts Page 3 of 5 • In Brazil, the Unisinos-Sao Leopoldo extension of the Trensurb commuter line in Porto Alegre involved the construction of 5 km (2.5 km double track) of LVT on viaducts. Unreinforced track concrete was placed over the viaduct spans as shown on the photograph below. Revenue service started in 2000 with a 90 km/h train speed, 21 tons axle load and 20 million tons annual traffic.
  • 4. Doc No: DPD072.GN Revision: March-09 Low Vibration Track (LVT) – Experience on viaducts Page 4 of 5 • Line 2 of the Rio de Janeiro metro included the construction of a short section of viaducts on which 1.0 km of LVT was built using unreinforced track concrete in the same way as in Porto Alegre. That line started operating in 1998 with a 70 km/h train speed, 17 tons axle load and 25 million tons annual traffic. • KCRC in Hong Kong installed 1.4 km of LVT on viaducts on the West Rail line that started operating in 2003 and approximately 1.2 km mostly within turnouts on viaducts on the MOS extension of the East Rail line that started operating in 2004. A typical cross section involving single plinths with reinforced concrete derailment containment upstands and unreinforced track concrete is shown below.
  • 5. Doc No: DPD072.GN Revision: March-09 Low Vibration Track (LVT) – Experience on viaducts Page 5 of 5 • 2006 saw the completion of KCRC’s LMC Spur Line, where 3.2 km of LVT were installed on viaducts. For that project, the viaduct designers specified that 10 mm-wide joints be placed at 3.5 m intervals in the track concrete as shown on the photograph below taken prior to final concreting. Because of the resulting longitudinal discontinuity of the track concrete, fiber reinforced track concrete was used on viaducts for that project.