Diameter line Altstetten – Zurich HB – Oerlikon
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The Altstetten – Zurich HB – Oerlikon (DML) diameter line is a Swiss railway line that connects the Altstetten and Oerlikon stations directly through the second underground station, Löwenstrasse , located below Zurich's main station . The route is operated in mixed traffic, i.e. used by both long-distance and regional traffic, the Zurich S-Bahn .
overview
The route is 9.6 kilometers long and includes, in addition to the new four-track underground station, the 1156 meter long Letzigraben bridge , the 394 meter long coal triangle bridge and the almost 5 kilometer long Weinberg tunnel . The underground station is also connected to the left bank sea line to Thalwil . The connection with the above-ground access to the Oerlikon station takes place via two additional tracks in the Oerliker cut, which extend into the station. The project does not include the expansion of the Oerlikon train station, which is influenced by the diameter line, but planned and financed separately and implemented together with the City of Zurich by the end of 2016.
The section of the route between Oerlikon station and Zurich main station was put into operation in mid-June 2014. Before that, the S-Bahn S2, S8 and S14 used the temporary Sihlpost section of Zurich's main station and turned there; S2 and S8 in continuous operation (connection to Thalwil), the S14 starts and ends there (to and from Hinwil via Oerlikon). Since then, these lines have been using Löwenstrasse station and the new line to and from Oerlikon. Intercity trains from and from western Switzerland to onward travel via Oerlikon to eastern Switzerland have been running over the cross-city link since the two bridges were completed in 2015.
The four additional through tracks in the Löwenstrasse underground station significantly increase the capacity of the main station, as significantly fewer trains per hour now have to be handled on the end tracks in the platform hall . For the S-Bahn, travel time savings of around eight minutes are achieved (turning no longer required and a shorter route through the Weinberg tunnel), but not for the long-distance trains, as they still have to wait for several connecting trains (full cycle nodes).
The projected costs were initially (as of approx. 2008) around 1.8 billion Swiss francs , of which the Swiss Confederation (Confederation) and the Swiss Federal Railways (SBB) assume a total of 60 percent and the Canton of Zurich 40 percent. Later (as of 2011), costs of 2.031 billion Swiss francs (at the 2006 price level) were expected, of which the federal government and SBB were to assume two thirds and the canton one third.
Sub-projects
Bridges to Altstetten
Löwenstrasse station is connected to Altstetten station by the two single-lane bridges Kohlendreieckbrücke and Letzigrabenbrücke. These enable long-distance traffic to leave the train station without crossing and allow acceleration to 120 km / h. They went into operation with the timetable change on December 13, 2015.
Long-distance trains and some S-Bahn trains reach speeds of up to 80 kilometers per hour as far as the Kohlendreieck Bridge. The diameter line then passes under the Hard Bridge . The Letzigraben Bridge that follows, only used by long-distance trains and only to the west, leads over the Duttweiler Bridge and crosses almost the entire track area of Zurich's main train station. In front of Altstetten station, the new exit track joins the existing express train tracks, which are operated in right -hand traffic up to the crossing at the level of the Limmattal marshalling yard . At 1156 m, the Letzigraben Bridge will be the longest railway bridge in Switzerland. The two bridges are only used to exit the new Löwenstrasse station. The “southern entrance” created as part of Bahn 2000 is used for the entrance . The bridges were officially opened on October 26, 2015.
The S-Bahn to the west (S14, S19) only use the Kohledreieckbrücke and leave the new line under the Hardbrücke in order to reach the tracks that continue the connecting curve from Wiedikon to Zurich Altstetten, where they usually use platform 2.
In the opposite direction, the S14 from the Säuliamt in Altstetten drive on track 4, first drive on the tracks in the direction of Wiedikon, and thus bypass the 280-meter-long "Zurich Altstetten" tunnel at the south entrance. In the area of the former Herdern level crossing, you can switch to the Zurich south entrance, which opened on May 4, 2003, and continue on this towards Löwenstrasse station. The S 19 coming from Dietikon, like the express trains, travels the entire south entrance and also uses platform 6 in Zurich Altstetten.
Löwenstrasse station (Zurich HB platforms 31-34)
The through station Löwenstrasse (or Bahnhof Löwenstrasse) is the station built as a tunnel or underground station under tracks 4 to 9 of the main station. In the operations of the main train station, it is referred to as a station section with tracks 31 to 34. Its track level is around 16 meters lower than that in the platform hall. It is operated in mixed traffic, i.e. used by both long-distance and regional traffic ( Zurich S-Bahn ). It has been serving regional traffic since June 15, 2014, and long-distance traffic since the timetable change in December 2015 (completion of the bridges in the direction of Altstetten).
The access ramp from Altstetten has a gradient of 37 per thousand. The design speed is 80 km / h. The tracks of the two-lane driveways are fanned out in the station in two tracks. There is a 420-meter-long double platform between each pair of tracks. The platforms are 13.5 meters wide and connected to the mezzanine floor above by fixed and escalators. Due to the lateral offset between the track axes of the underground station and the platform hall, the lifts leading to the platform hall run in inclined shafts inclined by 20 °.
The lane type is Low Vibration Trak (LVT): The sleeper blocks for only one rail each are separated from the floor slab in which they are concreted by means of rubber mats located underneath and on the side and thus acoustically decoupled. The propagation of the noise generated by the trains in the rails into the track substructure as so-called structure - borne noise is reduced in this way.
As a result of the commissioning of the underground station, the Sihlpost wing station, which is also located in the south of the main station, can be demolished above ground , which previously served as a provisional end point for local traffic. With this area recycling , an urban redesign of the Europaallee in the Langstrasse quarter , which is directly adjacent to the railway facilities, is possible.
Weinberg tunnel
Most of the route between the Löwenstrasse and Oerlikon stations leads through the Weinberg tunnel, which ends in a railway cut just before Oerlikon. At the beginning of the tunnel, the gradient initially drops to 25 per mille and then rises to 25 per mille. The design speed is between 80 and 120 km / h. The largest overburden is 160 m.
Connection in Oerlikon
The diameter line will be connected to the previous connection between Zurich Central Station and Oerlikon, which was mainly on the surface. In the cut there are two portals of the Weinberg tunnel, which are already part of the intersection-free connection to the previous route. The common line to Oerlikon station will be expanded from six to eight tracks and an underpass structure will be provided at the level of the Regensbergbrücke (road bridge). Oerlikon station will also be expanded by two tracks and will have a new shopping area in the existing pedestrian underpass.
For the expansion of the Oerlikon train station, the site on which the former MFO administration building (today Restaurant Gleis 9 ) stood was required. This industrial monument was threatened with demolition before ABB agreed at the last minute to move the building.
In the railway section in front of Oerlikon, the gradient is up to 35 per thousand. The design speed is 80 km / h.
inauguration
The first construction phase of the cross-city line, consisting of the Weinberg tunnel and the Löwenstrasse through station, was inaugurated on June 12, 2014 by Federal Councilor Doris Leuthard . The station itself was inaugurated on June 14, 2014 with a festival for the public; On Sunday, June 15, 2014, the route went into operation as part of a so-called “small timetable change”, which (like every timetable change) took place in the night from Saturday to Sunday. The official inauguration of the second stage of the DML, i.e. the two bridges, took place on October 26, 2015. This section of the station has been used by long-distance trains since December 13, 2015. Long-distance trains stay on the platform between 2 and 11 minutes.
literature
- Peter Krebs, SBB (ed.): Diameter line - The miracle of Zurich . AS Verlag , Zurich 2014, ISBN 978-3-906055-18-3 . ( Reading sample )
Individual evidence
- ↑ a b Doris Leuthard opens the diameter line. In: 20 minutes . June 12, 2014, accessed April 7, 2018 .
- ↑ a b Diameter line Altstetten - Zurich HB - Oerlikon. (PDF; 3.6 MB) (No longer available online.) Swiss Federal Railways SBB, Large-scale infrastructure project diameter line, October 2012, p. 5 , archived from the original on April 7, 2018 ; accessed on April 7, 2018 (12-page brochure). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Diameter line Altstetten - Zurich HB - Oerlikon. (PDF; 3.6 MB) (No longer available online.) Swiss Federal Railways SBB, Large-scale infrastructure project diameter line, October 2012, p. 3 , archived from the original on April 7, 2018 ; accessed on April 7, 2018 (12-page brochure). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c Diameter line Altstetten - Zurich HB - Oerlikon. (PDF; 3.6 MB) (No longer available online.) Swiss Federal Railways SBB, Large-scale infrastructure project diameter line, October 2012, p. 1 , archived from the original on April 7, 2018 ; accessed on April 7, 2018 (12-page brochure). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Rivista svizzera di architettura, ingegneria e urbanistica: Dal "Fil Rouge" al passante ferroviario. December 2012, p. 32.
- ^ Bye-bye dead end. In: Tages-Anzeiger . October 26, 2015, accessed April 7, 2018 .
- ^ Hans G. Wägli: Swiss Rail Network , page 37.
- ↑ 200,000 visitors to the folk festival in Zurich main station. In: Neue Zürcher Zeitung . June 14, 2014, accessed April 7, 2018 .
- ^ Off for "Platform 9" at Oerlikon station. In: Tages-Anzeiger . July 30, 2010, accessed April 7, 2018 .
- ↑ Zurich can now move a house weighing 6,200 tons. In: Tages-Anzeiger . September 7, 2010, accessed April 7, 2018 .
- ↑ SER 12/2015, page 610.
- ↑ SER 12/2015, page 611.
