Museumsinsel (Berlin U-Bahn)

Museumsinsel is a subway station under construction in Berlin's Mitte district. It is part of the extension of the subway line from Alexanderplatz to Brandenburger Tor, with ground broken in 2010.[1] It should open in the second quarter of 2021.[2]

Museumsinsel
Ubf
2020
LocationMitte
Berlin
Germany
Coordinates52.517403°N 13.398203°E / 52.517403; 13.398203
Operated byBerliner Verkehrsbetriebe
Line(s)
Platforms1
Tracks2
Construction
Structure typeUnderground
History
Opening2021 (2021)
Services
Preceding station   Berlin U-Bahn   Following station
  Future service  
towards Hauptbahnhof
towards Hönow
Location
Museumsinsel
Location within Berlin
Museumsinsel
Location within Germany
Museumsinsel
Location within Europe

Planning

A station with a central platform is being built at the eastern end of Unter den Linden, between Zeughaus and Berlin Palace. Part of the station will be located just south of the Schlossbrücke under the Spree. The platform will be located at a depth of 16 meters below the upper edge of the street.

At both ends, access structures are erected with a distribution level below the road surface. On the west side, access points are created in front of the Kronprinzenpalais and east of the Zeughaus in the direction of the Museumsinsel. On the east side of the station two entrances will be created directly at the Humboldtforum. Both access structures will be equipped with escalators, and the east entrance will also receive an elevator leading from the surface to the platform.

First, the two excavations for the later access structures are made, in the east in open construction and in the west in cover construction, each in the protection of slurry walls and an HDI sole. Since the excavation pit is partly located in the Spree, it must be partially filled during the construction period behind a cofferdam to be created. The station area will be built only after passage of the tunnel boring machine and production of the two track tunnels. This is done, in contrast to the other stations of the new section, starting from the two excavations in mining propulsion under cover of a ground freezing. The icing process was already used in the construction of the Brandenburger Tor station.

The platform space is made up of the vaults of the two tunnelled tunnels and the space between two columns with a flat ceiling. The design by Max Dudler was inspired by a stage design by Karl Friedrich Schinkel for the opera The Magic Flute (Die Zauberflöte) from 1816 and destines a dark blue barrel vault with points of light over the tracks - a starry sky.[3]

At the western end of the station, a weir chamber will be built to protect the underpass from the Spree. All equipment for the operation, such as power supply, telecommunication and air conditioning systems will be installed in the underground station building.

The completion and commissioning was planned together with the route extension for mid-2019, but was delayed to 2020.

Construction

From mid-2010 to the end of 2011, extensive line relocations were made in the later construction site area.

Also in 2011 archaeological excavations were carried out in the area of the later eastern access structure. Here were until 1894, the houses of the castle freedom from the 17th and 18th centuries, whose foundations and cellars were still partially preserved.

Berliner Verkehrsbetriebe awarded at the end of January 2012 the first lot for the manufacture of the shell. It included the launch shaft for the tunnel boring machine, the tunnel in the area of shield tunneling, the Unter den Linden and Museumsinsel stations, and a track change system. The order volume is around 190 million euros.[4] For the shell of the Museumsinsel station 65 million euros are estimated.[5]

The actual start of construction of the station was at the end of April 2012.

For glaciation under the Spree in the area of the later platform space, a total of 95 holes - each 105 meters long - were drilled by the end of November 2017. In these lines for the cooling liquid - minus 37 °C cold calcium chloride solution - were placed. The freezing of the soil is planned from January 2018, this is estimated to be 80 days. Then the platform area can be broken.[6]

See also
  • Museumsinsel, the name of the northern half of an island in the Spree river which the station is named after

References
  1. "Hinter den Kulissen des U5-Weiterbaus" (in German). In: bvg.de. 2010-04-30. Archived from the original on 2010-05-04. Retrieved 2012-10-08.
  2. Neumann, Peter (2018-09-11). "Ausbau der U5: Bahnhof Museumsinsel wird nicht rechtzeitig fertig" (in German). Retrieved 2019-02-10.
  3. "Max Dudler Architekt - U-Bahnhof Museumsinsel Berlin" (in German). Retrieved 2017-06-26.
  4. "Vergabeverfahren für den Bau der U5 entschieden" (in German). In: bvg.de. 10 February 2012. Retrieved 2012-02-10.
  5. "Drucksache 17/13562" (PDF) (in German). Abgeordnetenhaus Berlin. 16 April 2014. Retrieved 2014-05-02.
  6. "Die Bohrarbeiten für die U5 kommen voran". Der Tagesspiegel (in German). 2017-11-21. Retrieved 2017-11-21.
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