Alster swimming pool

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Alster swimming pool
Hohenfelde, Hamburg, Germany - panoramio (41) .jpg
Data
place Hamburg-Hohenfelde
architect Horst Niessen, Rolf Störmer , Walter Neuhäusser
Civil engineer Jörg Schlaich from the engineering office Leonhardt and Andrä
Builder Hamburg Waterworks (HWW)
Architectural style Modern
Construction year 1968-1973
construction time 4½ years
Floor space 4300 m²
particularities
2 hyperbolic parabolic shells as roof structure

The Alsterschwimmhalle is an indoor swimming pool in the Hamburg district of Hohenfelde , which is only a few minutes' walk from the Outer Alster . It was inaugurated on January 20, 1973. Due to its spacious and lively roofed hall, the Alsterschwimmhalle has been popularly known as the “ swimming opera ” from the start .

The Alsterschwimmhalle is Hamburg's largest public swimming pool and is managed by Bäderland Hamburg GmbH. Numerous national and international swimming competitions have already taken place in the 50-meter pool of the hall .

Furnishing

Interior view, May 2007

In addition to a 50-meter pool, there has been an aqua fitness area since the last renovation , which has replaced the previous non-swimmer pool. There is also an outdoor pool with a temperature of around 28 degrees with water jets and lighting. In the hall there is a diving platform with platforms three, five, seven and a half and ten meters high and a slide 76 meters long. The offer is supplemented by a fitness and sauna area. The water is not disinfected with chlorine , but with ozone in the water treatment system. At that time, ozone was considered to be “pioneering” because it avoids the usual reddening of the eyes and the smell of chlorine.

history

The architects Horst Niessen and Rolf Störmer designed the building plan, which won an architecture competition in 1961. Then they involved the shell construction specialist Walter Neuhäusser to revise the design. As a structural engineer and structural engineer was Jörg Schlaich responsible, then working in the engineering office Leonhardt and Andrä . The first construction planning began in 1963 and construction finally began in 1968. The structure consists of two hyperbolic paraboloid shells in two adjoining kite-shaped rectangles that form a hexagon . This shell building type is one of its kind the world's largest. The obliquely rising edge beams of the roof shell have a cantilever length of up to 54 meters, tapering towards the top and thus give the roof a certain "elegance". The shell diagonals are 76.40 m and 56.20 m long. The roof reaches a maximum span of 96 m and the shell thickness is only 8 cm.

The “elegant” roof shape is also compared to a “butterfly”. The roof shell rests on three ground anchors, which are mounted “telescopically” in order to absorb movements caused by wind pressure and temperature fluctuations. Two steel strands are connected to each other on the concrete plinths below the hall in the ground and additionally stabilize the roof. This underground stabilization was a common measure in hyperbolic parabolic shell structures (e.g. Dorton Arena , Kongresshalle , Seerose Potsdam ).

The construction was initially estimated at 24 million D-Mark, in the end the construction costs amounted to 33 million D-Mark.

The Alster swimming pool was built as a competition venue. When it was completed, it was found that the pool was a few centimeters too short. Since swimming competitions are designed for 50-meter lanes and falsification of the results had to be ruled out, the upcoming competitions were held elsewhere until the lane was extended to the correct length.

To prevent the window panes from misting up with water vapor, lattice masts were placed in front of the window front, in which there are white plastic pipes for the air supply. These masts were only installed later and were criticized as a "visual offense" because they interfere with the unobstructed view. The reconstruction plans do not provide for the dismantling and replacement of the lattice towers.

In July 2004 a closure of the swimming pool was discussed for cost reasons. After protests from the Hamburg population, it was decided to convert the swimming pool and implemented it in the summer of 2007. The renovation cost around 1 million euros.

Extensive renovations are planned from October 2020 until probably 2024. The planned renovation costs amount to 60 million euros. The bathroom will remain closed during this period.

  • Entrance area, 2006

  • Swimming pool (left) and sauna (right), 2014

  • South side, 2006

literature

  • Fritz Leonhardt and Jörg Schlaich : The Hypar shell roof of the Hamburg Sechslingspforte indoor pool. Part 1: Design and structural behavior. In: Beton- und Stahlbetonbau , Vol. 65, Issue 9, September 1970, pp. 207-214.
  • Robert K. Müller and Rolf Kayser: The hypar shell roof of the Hamburg Sechslingspforte indoor pool. Part 2: Model investigation. In: Beton- und Stahlbetonbau , Vol. 65, Issue 10, October 1970, pp. 245–249.
  • Hartmut Vossbein and Karl Lehmitz: The hypar shell roof of the Hamburg Sechslingspforte indoor pool. Part 3: Construction. In: Beton- und Stahlbetonbau , Vol. 65, Issue 11, November 1970, pp. 261–264.

Movie

  • 02. Hamburg: Alster swimming pool. Newsreel , film report, BR Germany, 1973, 2:57 min., Camera: Rühe, Ahsendorf, production: UFA , series: UFA-Jetzt , episode 864, published: February 13, 1973, online video from the film archive of the Federal Archives , starts from 2:37 min. to 5:34 min. or click on the third small picture at the top right.

Web links

Commons : Alsterschwimmhalle  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b c d e Building description: Shell roof for the Hamburg-Sechslingspforte swimming pool. Hamburg, 1967. In: schlaich bergermann partner ( sbp ), with photos, accessed on June 8, 2020.
  2. ↑ a b c d e Levi Lück: The Hamburg Opera has been swimming for 45 years. In: Die Welt , January 29, 2018.
  3. ↑ a b Sven Kummereincke: Hamburg's swimming opera is threatened with demolition. In: Hamburger Morgenpost , July 12, 2004, subject to payment, online receipt from Genios .
  4. ^ A b W. G. Godden, Shell Roofs : Swimming Hall at Hamburg. ( Memento of April 27, 2007 in the Internet Archive ). In: NISEE ( National Information Service for Earthquake Engineering ), University of California, Berkeley , 1997, (English).
  5. ↑ a b c d Olaf Wunder: Hamburg historically: The Alster swimming pool with butterfly wings. In: Hamburger Morgenpost , June 24, 2018.
  6. ↑ Frank Otte: With shine in the bankruptcy. In: Die Zeit , June 20, 1975, (subject to registration): "The mayor finds visual instruction for this warning only a few kilometers from his town hall: the Alster swimming hall, christened by the Hamburgers" swimming opera "." Online copy at Genios .
  7. ↑ Gerhard E. Kurzmann, Ozone application in water treatment: history, production, properties, technologies, reactions, corrosion and corrosion protection , expert verlag, Böblingen 1993, ISBN 978-3-8169-0911-8 , limited preview in the Google book search.
  8. ↑ Sven Kummereincke: Hamburg's swimming opera is threatened with demolition. Bäderland must save 3.5 million euros. In: Hamburger Morgenpost , July 12, 2004, subject to payment, online receipt from Genios .
  9. ^ A b Internet encyclopedia of civil engineers: Great Engineers> Engineers> Leonhardt, Fritz (1909–1999)> Biography> Famous special buildings. In: TU Cottbus , Chair of the History of Building Technology and Structural Maintenance:
    “Previously, the [.] Architects Horst Niessen, Rolf Störmer (1907–1982) and Walter Neuhäuser  [ sic! ] the competition with the Leonhardt & Andrä office responsible for construction. The structure, consisting of two hyperbolic-paraboloid shells on three supports, is one of the largest in the world with its dimensions (Godden 1997) . "
  10. ^ Franz Josef Hamm: Walter Neuhäusser is 80. In: Frankfurter Neue Presse  / BDA , October 9, 2006.
  11. ↑ a b c Stephanie Lamprecht: 60 million euros investment: The new Alster swimming pool will be so beautiful. In: Hamburger Morgenpost , June 14, 2018.
  12. ^ A b Manfred Sack : The roof of Hamburg. Hanseatic excursion into architecture: the "Alster swimming pool". ( Memento of March 13, 2016 in the Internet Archive ). In: Die Zeit , January 19, 1973, No. 4.
  13. ↑ Photo: Topping-out ceremony for the Alster swimming pool. In: The Hamburg Opera has been swimming for 45 years. In: Die Welt , January 29, 2018.
  14. ↑ Newsreel: 02. Hamburg: Alster swimming pool. In: Filmarchiv des Bundesarchivs , February 13, 1973, from 2:37 min. To 5:34 min. Or click on the third small image at the top right.

Coordinates: 53 ° 33 '36.3 "  N , 10 ° 1' 17.8"  E