Silent and smooth: innovative technology in the metro

A new technology to reduce vibration and noise, is used to update the existing tracks and build new sections.

A special technology has been applied to new tracks of 11 Moscow metro lines. It reduces vibration and noise from 80 to 72 dB on average. 

LVT (Low Vibration Track) Technology  has been applied in Moscow metro since 2014. It is used in the construction of new stations and metro tunnels, and for upgrading the existing infrastructure.

These tracks look different from the usual railway tracks. They have concrete blocks instead of cross ties laid on special rubber-covered elastic pads, and then integrated with a concrete base of the track.

"After the metro infrastructure's upgrade, trains move silently, with the vibration in tunnel structure reduced. The service life of the track laid with the use of vibration-absorbing technology is about 40 years until the overhaul. In addition, it reduces the cost of its maintenance by about 20 percent," said Deputy Moscow Mayor, Head of the Department of Transport and Road Infrastructure Development Maxim Liksutov.

40 stations of 11 metro lines have vibration-absorbing tracks, laid under LVT technology, namely Nekrasovskaya line,  Solntsevskaya, Big Circle, Kaluzhsko-Rizhskaya, Tagansko-Krasnopresnenskaya, Kalininskaya, Lyublino-Dmitrovskaya, Zamoskvoretskaya, Serpukhovsko-Timiryazevskaya, Sokolnicheskaya and Arbatsko-Pokrovskaya lines' sections. Passengers may see innovative tracks at Spartak, Sviblovo, Biblioteka Imeni Lenina, Baumanskaya, Petrovsko-Razumovskaya and Khovrino stations.

Track infrastructure's upgrade in Moscow metro continues. So, until the end of 2020, the new technology will render smooth and quiet train movement at seven more stations, such as Shchukinskaya, Otradnoye, Kolomenskaya, Babushkinskaya, Komsomolskaya of Sokolnicheskaya line, Kurskaya of Circle Line and Kievskaya of Filyovskaya line.

The Moscow metro has the noise and vibration reduced also due to continuous welded rail tracks. Trains move smoothly now. This technology has been applied at various metro lines since 2012. Central sections of the lines located within Circle Line, such as Tagansko-Krasnopresnenskaya, Zamoskvoretskaya, Sokolnicheskaya, Serpukhovsko-Timiryazevskaya and Arbatsko-Pokrovskaya lines have welded rail tracks now. The technology was also applied when laying rails on Solntsevskaya and Filyovskaya lines and on Moscow Central Circle (MCC). Welded rail tracks are also to be laid on the Circle Line.

Source: https://www.mos.ru/en/news/item/58761073/