Hardturm Viaduct

from Wikipedia, the free encyclopedia
A gravel train drives the single-lane branch towards Altstetten. In the background you can see the double-track branch with a waiting S-Bahn
Aerial photo from August 1969
A RABe 514 has just left Hardbrücke station and is on its way towards Oerlikon
A S-Bahn train on the Hardturmbrücke

The Hardturm Viaduct is a 1,126 meter long railway bridge in the city of Zurich . Mostly located in the industrial quarter, it crosses railway tracks, industrial areas, numerous streets, two tram lines and shortly before its end the Limmat . From the opening on June 1, 1969 to 2015, when the Letzigraben Bridge was put into operation, it was the longest railway bridge in Switzerland. It was also the longest prestressed concrete railway bridge in Europe in 1969 and the first railway bridge in the world to use concrete joints .

history

The building was under the Käferberg line that the Oerlikon station with both the Altstetten station , and to the train station Zurich Hardbrücke and Zurich main station , built links. Due to a branch, the bridge has a Y-shaped floor plan. In the first construction phase, the viaduct, which connects to the Käferberg tunnel , was built on two tracks up to the Herdern junction. The branch towards the west to Altstetten, known as Hardturm I , was implemented as a single track. On June 1, 1969, this route, which primarily serves to handle freight traffic, was opened to rail traffic. The second construction phase with the double-track continuation of the main line east to Zurich main station, known as Hardturm II , was only completed after the Zurich marshalling yard had been relocated to the Limmat Valley and put into operation on May 23, 1982 together with the new Hardbrücke stop.

construction

The viaduct consists of a chain of continuous girders with seven fields each, which are designed as girder bridges with a maximum 2.21 meter high box girder cross-section and separated by expansion joints on brake pillars. Two continuous beams with a total length of 478 meters are arranged between the northern abutment and the Herdern junction. The subsequent western, single-track construction with three continuous girders is 647.6 meters long, the eastern, double-track 606.4 meters. The mean span is 33 meters, the maximum over the Limmat 43 meters. To minimize construction maintenance, the superstructure is supported on the maximum 1.0 meter thick and up to 24 meter high standard pillars on top of concrete joints instead of conventional bearings . These new components had previously been examined in laboratory tests on a 1: 1 scale.

particularities

For the Lumière plan , the bridge has been illuminated as one of the three pilot projects since 2005.

Individual evidence

  1. ↑ Swiss Rail Network Edition 1980, page 103
  2. ^ Hans G. Wägli: Swiss rail network . AS Verlag, Zurich 2010, page 33
  3. ↑ H. Hugi: The Hardturm Viaduct of the SBB in Zurich. In: Schweizerische Bauzeitung. Vol. 88, 1970, No. 3, pp. 40-41
  4. ↑ Dialma Jakob Bänziger : The Hardturm Viaduct of the SBB in Zurich. In: Schweizerische Bauzeitung. 85th vol., 1967, issue 33, pp. 609-614
  5. ↑ [1] PDF project sheet Plan Lumière Hardturmviadukt

See also

Coordinates: 47 ° 23 '27.6 "  N , 8 ° 30' 40"  E ; CH1903:  six hundred eighty thousand nine hundred seventy-two  /  249,460