Side road tunnel

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Side road tunnel
use Railway tunnel
traffic connection Württemberg Western Railway
place Vaihingen an der Enz
length 1463 m
Number of tubes 1-2
cross-section 79 m²
Largest coverage 18 m
construction
Client German Federal Railroad
building-costs 31 million DM
start of building 1986
completion 1988
business
operator DB network
release June 2, 1991
location
Side road tunnel (Baden-Württemberg)
Red pog.svg
Red pog.svg
Coordinates
East portal 48 ° 56 ′ 39 "  N , 8 ° 58 ′ 53"  E
West portal (tube I) 48 ° 56 ′ 36 "  N , 8 ° 58 ′ 2"  E

The secondary road tunnel is a 1463 m long railway tunnel of the Württemberg West Railway in Vaihingen an der Enz . He drives through the slope byway of the Hohen Markstein and therefore bears his name.

course

The tunnel has a double-track east portal (kilometer 36.833) and two single-track west portals at route kilometers 37.900 and 37.935. At route kilometer 37.6, the two tracks branch in a north-westerly direction into two separate tubes of 352 m (so-called tube I , track to Bruchsal) and 386 m in length ( tube II , track to Bietigheim-Bissingen). The eastern part of the tunnel used by both tracks is also assigned to Tube II and measures 725 m. The maximum coverage of the tunnel is 18 m.

The west portals are on the southern edge of the Vaihingen (Enz) train station . In front of the south-western tunnel portal, the directional track to Bietigheim-Bissingen crosses the Markstein tunnel of the high-speed line Mannheim-Stuttgart . The west portals are around 11 m above those of the Markstein tunnel.

The gradient rises at 1.5 per mille to the west along the entire length of the tunnel and drops by 11.063 per mille at the northwest portals.

The tube passes almost completely through layers of the Lettenkeuper .

The line speed in the tunnel area was reduced from 140 km / h to 120 km / h in 1999 to enable the use of light local railcars for the extension of the S 5 line of the Karlsruhe Stadtbahn .

history

planning

A partially subterranean route of the existing route in the area of ​​the Hohe Markstein, which was initially planned as part of the planning of the new route, was abandoned in the course of savings. The tunnel was no longer provided for in the " Spartrasse " submitted in 1975 .

In the planning status of October 1977, two single-track tunnels a few hundred meters long were again planned. The track towards Sersheim was supposed to cross the Markstein tunnel above ground. According to the planning status from the end of 1977, the line coming from Sersheim was to be introduced into the Vaihingen station in a cut.

As part of the 135 million DM package agreed in November 1978 between Federal Transport Minister Kurt Gscheidle and Baden-Württemberg's Prime Minister Lothar Späth , the tunnel was extended to 400 or 500 meters in order to avoid a previously planned deep cut. This led to additional costs of 6 million DM.

construction

The tunnel was built between 1986 and 1988 and was driven from the west portals in an easterly direction and built using shotcrete . The excavated cross-section of the single-track tubes was around 65 m², that of the 2-track line was 106 m². The usable cross-sections are 46 and 48 m² in the single-track tubes and around 79 m² in the double-track tubes (standard profile). The inner shell is 35 cm thick in the single-track and 40 cm in the double-track tube. Up to 80 cm are reached in the branching area.

The dome was punched through on August 14, 1987. Due to the short construction time, the production of the inner shell had to start while the tunneling was ongoing.

The construction costs amounted to 31 million Deutschmarks (around 16 million euros ). The tunnel sponsorships had taken Ruth Kienzle (tube I) and Helga Finkenbeiner (tube II).

Web links

  • Location, course, speeds and signals of the tunnel on the OpenRailwayMap

Individual evidence

  1. ^ A b c Karl-Friedrich Steidlinger: The new Vaihingen (Enz) train station on the Mannheim – Stuttgart railway line . In: Die Bundesbahn , 64, No. 10, 1988, ISSN  0007-5876 , pp. 1008-1016.
  2. ↑ a b c d e f Deutsche Bundesbahn (ed.): New Mannheim – Stuttgart line: secondary road tunnel , data sheet (2 pages), no year (approx. 1985).
  3. ↑ Light local railcars (LNT) of the AVG on the network of the DB AG. In: karlsruher-modell.de. TransportTechnologie-Consult Karlsruhe GmbH (TTK), accessed on January 17, 2017 .
  4. ^ A b Regionalbahnhof Mittlerer Neckar (Ed.): New Mannheim - Stuttgart line of the Deutsche Bundesbahn . (Series of publications, volume 6), Stuttgart 1977, p. 26, annex.
  5. ↑ The state government says tough "no" to this route . In: Ludwigsburger Kreiszeitung , December 7, 1977.
  6. ↑ Municipalities defend themselves against the rapid transit compromise . In: Ludwigsburger Kreiszeitung , November 11, 1978.

Web links