Rottbit tunnel
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Rottbit tunnel Rottbitze tunnel
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 The south portal of the Rottbitzetunnel with rescue access
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| use | Railway tunnel | |||
| traffic connection | High-speed route Cologne – Rhine / Main | |||
| place | Bad Honnef | |||
| length | 990 m | |||
| Number of tubes | 1 | |||
| Largest coverage | 14 m | |||
| construction | ||||
| Client | Deutsche Bahn AG | |||
| start of building | June 15, 1999 | |||
| business | ||||
| operator | DB network | |||
| release | August 1, 2002 | |||
| location | ||||
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| Coordinates | ||||
| North portal | 50 ° 39 ′ 15 ″ N , 7 ° 19 ′ 31 ″ E | |||
| South portal | 50 ° 38 '48 " N , 7 ° 20' 3" E | |||
Map with all coordinates: 
The Rottbitzetunnel (also known as the Rottbitze tunnel ) is a 990 m long railway tunnel on the high-speed Cologne – Rhine / Main line . In the southern area, it passes under the village of Rottbitze (an industrial park ) in the Aegidienberg district of Bad Honnef, and therefore bears his name.
The tube accommodates two tracks on slab tracks , which can be driven on as planned at 300 km / h.
Location and course
The north portal is at 44.5 km and the south portal at 45.5.
The route runs in the tunnel in a south-easterly direction. The gradient rises continuously towards the south portal, its incline flattens out. In its course, the structure passes under the Bad Honnef / Linz junction of federal motorway 3 with an overburden of around five meters. With an overburden of about 14 m, a hotel is also crossed under.
The Orscheid substation - one of six substations on the route - was built about 200 meters northwest of the tunnel ( 50 ° 39 ′ 19 ″ N , 7 ° 19 ′ 25 ″ E ) .
A 120 m long trough is attached to the north portal. To the south of the tunnel, the new line runs first in a 200 m long trough structure , then in a cut and then reaches the state border between North Rhine-Westphalia and Rhineland-Palatinate .
In addition to the Ittenbach tunnel and the Aegidienberg tunnel, the tunnel is one of three tunnels in which the route passes through the Siebengebirge over a length of around 14 km .
history
planning
The planning status from the beginning of 1992 did not envisage a longer tunnel in the Rottbitze area. At the end of 1995 the planned length of the structure was 740 m.
Between around the end of 1997 and mid-1999 the planned length was 820 m.
The structure was in planning section 3 of the new line in North Rhine-Westphalia.
construction
The tunnel was officially on 15 June 1999 struck . The tunnel sponsor Ilse Möller, wife of the then District Administrator Franz Möller , excavated the first piece of the crown with an excavator.
In view of the low overburden and the development above, various tunneling concepts were used. For example, a pipe umbrella was erected below the junction to secure the drive, and the dome was built in two stages (first 60, then 40 percent of the total area) when driving under Rottbitzer Strasse and the hotel .
Of the total length of 990 m, 709 m were built using mining techniques.
A total of 106,500 m³ was excavated, 17,200 m³ of shotcrete and 17,600 m³ of structural concrete were used for the construction.
business
From 2006, concrete noise barriers south of the Rottbitz tunnel were tested, which will gradually replace the previously existing aluminum walls from 2008.
Web links
Individual evidence
- ↑ a b c Route construction in the field of tension between structural engineering, nature and groundwater protection . In: On the subject , ZDB -ID 2115698-0 , issue 2/99, April 1999, pp. 4-7.
- ↑ DBProjekt GmbH Cologne – Rhein / Main, project management (publisher): New Cologne – Rhein / Main line: construction section middle section A: Königswinter – Dierdorf , brochure (20 pages), Frankfurt am Main, June 1999, pp. 3, 5, 8th.
- ^ Deutsche Bundesbahn, Federal Railway Directorate Cologne, Main Department N., Press Office: New Cologne-Rhein / Main line: section in North Rhine-Westphalia . Brochure (20 A4 pages) as of March 1992, Cologne 1992, p. 11.
- ^ Deutsche Bahn AG, network division, project management for the Cologne – Rhein / Main line (publisher): route map for the new Cologne-Rhein / Main line . Map from November 1995, Frankfurt 1995.
- ^ DBProjekt GmbH Cologne-Rhein / Main (ed.): Route map: New Cologne-Rhein / Main line , Frankfurt, November 1997.
- ↑ DBProjekt GmbH Cologne – Rhine / Main: New Cologne-Rhine / Main line: route map , Frankfurt, June 1999.
- ^ DBProjekt Köln – Rhein / Main (Ed.): Green light for airport connection; Round table in the Westerwald; Tunnel construction: the miners get started . In: On the topic , ZDB -ID 2115698-0 , issue June 1999, Frankfurt am Main, p. 10 f.
- ↑ Tunnel structures in construction lot A: Ittenbach, Aegidienberg, Rottbitze, Günterscheid . In: DB ProjektBau GmbH, Frankfurt (ed.): New Cologne – Rhine / Main line. Bridges and tunnels . without ISBN. P. 64.
- ↑ Bahn builds on concrete in the Siebengebirge . In: General-Anzeiger Bonn , February 21, 2009.