Luzhniki Metro Bridge

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The Luzhniki bridge Luzhniki Metro Bridge 02.jpg
The Luzhniki bridge
The upper level KosyginaStreet Moscow view to Khamovniki 06-2015 img2.jpg
The upper level

Luzhniki Metro Bridge (Russian : Лужнецкий метромост), also known as Metromost (Метромост), is a concrete double-decked (two-level) arch bridge carrying a road and a Moscow Metro line across the Moskva River in Moscow, Russia. It connects the neighbourhood of Luzhniki Stadium to Sparrow Hills. The bridge houses Vorobyovy Gory, the only station of Moscow Metro located over water. Designed in 1958 by V.G. Andreyev and N.N. Rudomasin (structural engineering), the bridge rapidly decayed and was rebuilt in 1997–2002.

Russian language East Slavic language

Russian is an East Slavic language, which is official in the Russian Federation, Belarus, Kazakhstan and Kyrgyzstan, as well as being widely used throughout Eastern Europe, the Baltic states, the Caucasus and Central Asia. It was the de facto language of the Soviet Union until its dissolution on 25 December 1991. Although nearly three decades have passed since the breakup of the Soviet Union, Russian is used in official capacity or in public life in all the post-Soviet nation-states, as well as in Israel and Mongolia.

Arch bridge bridge with abutments at each end shaped as a curved arch

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct may be made from a series of arches, although other more economical structures are typically used today.

Moscow Metro rapid transit system in Moscow

The Moscow Metro is a rapid transit system serving Moscow, Russia and the neighbouring Moscow Oblast cities of Krasnogorsk, Reutov, Lyubertsy and Kotelniki. Opened in 1935 with one 11-kilometre (6.8 mi) line and 13 stations, it was the first underground railway system in the Soviet Union. As of 2018, the Moscow Metro excluding the Moscow Central Circle and Moscow Monorail has 224 stations and its route length is 381 km (237 mi), making it the fifth longest in the world. The system is mostly underground, with the deepest section 84 metres (276 ft) underground at the Park Pobedy station, one of the world's deepest. It's the busiest metro system in Europe, and a tourist attraction in itself.

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Metro Bridge (1958)

The bridge was officially opened January 12, 1959. Total length with ramps 1,179 meters, arch spans 45 - 108 – 45 meters. The upper deck, 25.8 meters wide, carried 6 lanes of traffic, the lower deck housed Vorobyovy Gory metro station. The bridge was completed in 19 months. [1] The bridge builders used salt to speed up concrete hydration; in 1959, it was commissioned with incomplete moisture protection. [2] This caused rapid corrosion of rebars and tension cables.

Vorobyovy Gory (Moscow Metro) Moscow Metro station

Vorobyovy Gory is a Moscow Metro station. It is on the Sokolnicheskaya Line, between Universitet and Sportivnaya stations. Its name originates from a nearby elevated area literally translated as Sparrow Hills.

Mineral hydration is an inorganic chemical reaction where water is added to the crystal structure of a mineral, usually creating a new mineral, usually called a hydrate.

Corrosion Gradual destruction of materials by chemical reaction with its environment

Corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment. Corrosion engineering is the field dedicated to controlling and stopping corrosion.

Decay (1958–1997)

On July 8, 1959, rain water broke through the station hall roofing and flooded the tracks. In the following years, aluminium and steel parts of the station hall started falling apart, hiding far worse corrosion processes inside the concrete structure. As early as 1963, examinations signalled imminent danger. [2] By 1983, the bridge had lost 60% of its structural load capacity. In 1983, the station was closed, in 1986-87 the subway tracks diverted to temporary steel box girder bridges (29 meters left and 29 meters right from the main bridge axis).

Box girder bridge type of bridge

A box girder bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport. Although normally the box girder bridge is a form of beam bridge, box girders may also be used on cable-stayed bridges and other forms.

Reconstruction (1997–2002)

Reconstruction began with the demolition of the station hall, opening access to the main arches. The inner arches remained standing; their concrete bowstring was replaced with a steel tie. Once the arch was reinforced, in 1999, the builders demolished the automobile road deck and the columns that carried it. The new concrete deck was commissioned for automobile traffic in 2000. In July–August 2001, subway traffic returned to the main bridge tracks, the temporary bridges were removed; the restored subway station reopened on December 14, 2002. [3]

See also

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References

  1. Russian: Носарев В.А., Скрябина, Т.А., "Мосты Москвы", М, "Вече", 2004, стр. 153 (Bridges of Moscow, 2004, p.153) ISBN   5-9533-0183-9; other sources name 15 months. The authors of Bridges of Moscow, then college students, worked at the construction site as trainees, 1957-1958.
  2. 1 2 Bridges of Moscow, 2004, p.155
  3. metro.molot.ru

Coordinates: 55°42′37.0″N37°33′33.6″E / 55.710278°N 37.559333°E / 55.710278; 37.559333

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.