Aubinger tunnel
| Aubinger tunnel | ||||
|---|---|---|---|---|
| traffic connection | A99 | |||
| place | Munich | |||
| length | 1935 m | |||
| Number of tubes | 2 | |||
| construction | ||||
| Client | Federal Republic of Germany | |||
| start of building | 2002 | |||
| completion | 2005 | |||
| location | ||||
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| Coordinates | ||||
| North portal | 48 ° 10 ′ 14 " N , 11 ° 25 ′ 11" E | |||
| South portal | 48 ° 9 ′ 28 " N , 11 ° 24 ′ 6" E | |||
Map with all coordinates: 
The Aubinger Tunnel is a motorway tunnel on the A 99 (Munich motorway ring) that serves to protect the adjacent residential areas from noise . The name is derived from the Munich district of Aubing , in which it runs. With a length of 1935 meters, it is one of the longest motorway tunnels in Bavaria , plus the two entrance ramps with a length of 200 and 300 m. It runs from northeast to southwest between the Munich- Lochhausen motorway junctions in the northeast and GermeringNorth to south. The tunnel, which runs almost completely straight, is therefore in the north and west of the old town center of Aubingen. Part of today's Aubinger development is north of the tunnel.
Building description
The tunnel was built from 2002 to 2005. In addition to three streets, it also crosses the Munich – Augsburg and Munich – Buchloe railway lines , both of which are at the ends of the tunnel. The tunnel also includes an operations building, two pumping stations and six escape tunnels. A total of 170,000 m³ of concrete and 18,000 t of steel were used. A particular problem was the abundant groundwater in this area, which began on average 1 m below the surface and flowed in a northerly direction. The tunnel was built using an open construction method, provided with a roof and covered with earth up to a meter high.
Smoke-proof escape doors allow passage into the separate tube of the opposite lane in the event of a fire. Emergency exits to the outside are laid out every 600 meters, and extinguishing water niches for fire fighting are located every 150 meters.
In terms of the structural engineering, three sections can be distinguished: a northern “tunnel low position” (1150 m long), a central high position (500 m) and a southern low position (350 m). In the central high elevation, a concrete base was not required as a waterproof floor, as the groundwater was deep enough here. In the lower areas, however, a sole was installed. Here, the earth cover was also necessary as a weight support in order to compensate for the static buoyancy of the tunnel tube protruding into the groundwater. Today the tunnel gives the impression of a planted wall with a bicycle and pedestrian path. As part of the 1000th anniversary of the first documentary mention of Aubing, the Aubingen History Trail was opened here with information boards on important events.
Security technology
The permanently installed speed monitoring system , which has been operating in both directions of travel in the tunnel since March 2008, is carried out without motorists noticing anything. The measured data are forwarded electronically to the Fürstenfeldbruck traffic police station. In the first two weeks of operation alone, 2,500 drivers were registered who exceeded the permitted 80 km / h.
At the beginning of 2012 there were 1,500 to 2,000 speed violations per month, only a third as many as five years earlier. With 220,000 cars per working day, only a small proportion drive too fast. The responsible traffic police inspector sees this as an important reason for the low number of accidents of only around 30 per year. There were no serious collisions until May 2012.
Another safety measure is the automatic height control by light barrier at the entrances. This hits about two to three times a week (as of May 2012), whereupon the tunnel is closed with red traffic lights and barriers at the entrance. The tunnel is only released again after an on-site inspection by a patrol; a closure caused in this way can take 20 minutes. In the tunnel itself, cameras are installed every 100 meters to enable live monitoring. This allows the police to react quickly to broken down cars or other disturbances. Further monitoring measures include continuous measurement of the carbon monoxide content of the air, the brightness and the air speed. By carefully controlling the air supply, optimal visibility can be achieved. Due to the bundle of measures and the structural conditions, the Aubingen tunnel is considered one of the safest in Europe.
Individual evidence
- ↑ State capital Munich, municipal department, surveying office (ed.): Official map of the state capital Munich . ( online [accessed May 13, 2010]).
- ↑ a b c Dipl.-Ing. Dietmar Orwat: AUBING TUNNEL - BAVARIA'S LONGEST MOTORWAY TUNNEL . In: Allgemeine Baugesellschaft - A. Porr AG (Hrsg.): Porr news . No. 148 . Vienna 2005, p. 25–30 ( porr.hu [PDF; accessed on November 16, 2015]).
- ↑ a b c Gerhard Eisenkolb: Too much of a good thing . In: Süddeutsche Zeitung . May 15, 2012, p. R2 (regional part Munich) .
- ^ Aubinger and Richard-Strauss-Tunnel, jenoptik.com ( Memento from May 31, 2011 in the Internet Archive )
- ↑ Lightning thunderstorm in the tunnel, AZ, March 21, 2008 ( Memento from March 25, 2008 in the Internet Archive )