Ittenbach tunnel
| Ittenbach tunnel | ||||
|---|---|---|---|---|
 South portal of the Ittenbach tunnel with ICE 3
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| use | Railway tunnel | |||
| traffic connection | High-speed route Cologne – Rhine / Main | |||
| place | Koenigswinter | |||
| length | 1145 m | |||
| Number of tubes | 1 | |||
| Largest coverage | 25 m | |||
| construction | ||||
| Client | Deutsche Bahn AG | |||
| start of building | June 15, 1999 | |||
| completion | 2000 | |||
| business | ||||
| operator | DB network | |||
| release | August 1, 2002 | |||
| location | ||||
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| Coordinates | ||||
| North portal | 50 ° 41 ′ 14 " N , 7 ° 16 ′ 22" E | |||
| South portal | 50 ° 40 ′ 44 " N , 7 ° 16 ′ 55" E | |||
Map with all coordinates: 
The Ittenbach tunnel is 1,145 m long railway - tunnel of the high-speed line Cologne-Rhine / Main . In addition to district and municipal roads, it crosses under the district of Ittenbach in the city of Königswinter 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 route kilometer 39.2 and the south portal at 40.4. An emergency exit leads to the surface around 150 m north of the south portal, at 50 ° 40 ′ 47 ″ N , 7 ° 16 ′ 49 ″ E.
In the tunnel, the gradient of the route rises continuously in a southerly direction.
The tunnel reaches the Siebengebirge nature reserve along the route . Along with the Aegidienberg Tunnel and the Rottbitzetunnel , it is one of three tunnels in which the route passes through the Siebengebirge over a length of around 14 km.
The Federal Highway 3 runs east of the tunnel. The Siebengebirge junction crosses the route about 200 m northeast of the north portal . Between the junction and the north portal the route runs in a trough structure .
The south portal is followed by an incision up to 10 m deep, followed by a 255 m long, covered trough designed as a landscape bridge.
In the built-up area, the cover is around 25 m.
history
planning
The planning status from the beginning of 1992 already provided for a tunnel in the Ittenbach area. The planning status from the end of 1995 provided for a tube 1,000 m in length.
As part of the consensus route between the administrative district, district, municipalities and DB ProjektBau decided on May 27, 1997, the planned tube was lengthened by 145 m and the gradient was lowered in the interests of environmental and nature conservation . This extension runs in a nature reserve.
At the end of 1997, the tunnel was planned to be 1,145 m long. This corresponds to today's length.
The structure was in planning section 3 of the new line in North Rhine-Westphalia.
construction
The structure was constructed using mining techniques over a length of 756 m; At the same time, the construction of 389 meters was carried out using the open construction method. A particular challenge in the construction presented the undercutting of two natural gas - and ethene - pipelines constitute the tunnel meter 38 which were uncovered during construction.
The tunnel attack was celebrated on June 15, 1999. The tunnel sponsor Rosemarie Krämer, wife of the then mayor Herbert Krämer, triggered the symbolic first demolition. During the construction period, the groundwater level should be lowered by up to 30 meters (as of April 1999).
The tunnel was knocked through at the beginning of 2000 after seven months of construction. With the help of the tunnel godmother Rosemarie Krämer, an excavator operator cleared the last centimeters of rock at the south portal. It was the 19th of 24 mined tunnels on the line to be pierced.
It was the northernmost tunnel in contract section A.
business
As part of an investigation into the effects of pressure waves on noise barriers and tunnels, 150 ICE passages were measured at the south portal of the Ittenbach tunnel. Two light barriers were used to measure the driving speed . During the measurements, speeds of 265 to 268 km / h in the direction of Frankfurt and speeds of 305 to 308 km / h in the direction of Cologne were recorded. Based on 300 km / h, the measurement accuracy was 0.6 km / h.
Web links
Individual evidence
- ↑ a b c d 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.
- ↑ a b c d e DBProjekt GmbH Cologne – Rhein / Main, project management (ed.): New Cologne – Rhein / Main line: construction section middle, Lot A: Königswinter – Dierdorf , brochure (20 pages), Frankfurt am Main, June 1999, p 3, 5.
- ^ 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.
- ↑ a b Without an author: The planning stage . In: Eisenbahn JOURNAL: Tempo 300 - The new Cologne – Frankfurt line . In: Eisenbahn Journal , special edition 3/2002, ISBN 3-89610-095-5 , pp. 12-17.
- ↑ NBS current: Agreement on routing, building law in Rhineland-Palatinate . In: On the subject , ZDB -ID 2115698-0 , issue 3/1997, p. 7.
- ^ DBProjekt GmbH Cologne-Rhein / Main (ed.): Route map: New Cologne-Rhein / Main line , Frankfurt, November 1997.
- ↑ a b carbon copies; Siebengebirge exhibition; Tunnel breakfast; Ecological balance in the Rheinaue; Fish ladders . In: DBProjekt Köln-Rhein / Main (Ed.): On the topic , ZDB -ID 2115698-0 , Issue 1/2000, Frankfurt am Main, February 2000, p. 7.
- ↑ 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. 61 f.
- ^ 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.
- ↑ Hans-Jürgen Niemann, Norbert Hölscher: Eigenendynamik undesirable . In: Rubin , 2009, pp. 34-41, ISSN 0942-6639 , ( PDF file ).