Bruchsal Rollenberg junction
An extensive Überwerfungsbauwerk at the intersection of high-speed railway Mannheim -Stuttgart with the railway Heidelberg -Karlsruhe and four grade separated connection tracks between two routes to / from Bruchsal and Ubstadt in Baden- Württemberg focus on the branching point Bruchsal Rollenberg.
Add it flows from the northwest, the connecting curve Ubstadt, drawn from the branching point Ubstadt -Weiher ( Abzw ) starting the connection from Heidelberg manufactures. From the southwest the connecting curve Bruchsal flows, which conveys from the branching point Bruchsal Northern linking of direction Karlsruhe Bruchsal.
- 2.1 connecting curve Ubstadt
- 2.2 connecting curve Bruchsal
Location and History
The branch location Bruchsal Rollenberg (abbreviation in operation Jobs Directory RROL ) is located on the north west portal of the role of mountain tunnels and thus precisely at the junction of the Upper Rhine Valley in the Kraichgau. In the double-track high-speed line here open three tracks of the railway line Mannheim -Heidelberg - Karlsruhe: The track pair of Ubstadter curve from the north, from Mannheim -Heidelberg, the track of Bruchsal curve from the south, from the direction of Karlsruhe.
Both curves span an area of approximately 50 hectares. Inside parts of the now decommissioned and sealed circle landfill Bruchsal and the branch of the railway line Bruchsal- Odenheim of the line Karlsruhe -Heidelberg are with the siding of the landfill.
Connecting curve Ubstadt
The two tracks of the connecting curve Ubstadt thread at the tap point Ubstadt -Weiher ( Abzw ) ( abbreviation: RUWA ) from the south-east direction height free of the track Heidelberg Karlsruhe. About the southern opening into the high-speed railway track access trains from Heidelberg on the high-speed line. The northern, on schedule with 150 km / h is driven on track, on schedule used by trains towards Heidelberg. Both tracks thread at the tap point Rollenberg height freely into the two tracks of the high-speed line.
The curve crosses beyond the railway line Bruchsal- Odenheim, the Federal Highway 3 and County Road 3585th
For the dam body of the curve around 950,000 cubic meters of material were installed from the the preliminary section and the outbreak of the role of mountain tunnels.
The high-speed switches
All four switches that connect the connecting curve Ubstadt with the Rhine Valley line and the high-speed railway, high-speed switches are of the earliest type in Germany. The name is EW 60-6000/3700 1:32,5 - fb, the permissible speed in the straight 280 km / h, in the branch 160 km / h This makes it possible, even the connecting curve from and to navigate to the Rhine Valley line with the permissible in this stretch top speed of 160 km / hr.
These are so-called basket curved turnouts, that is, the arc starts at the point blades with a larger radius ( here: 6000 m ) and then at about the course towards the center in a smaller radius ( here: 3700 m) pass. Turnout of more recent design ( Klothoidenweichen ) have a over the entire course length ranging smooth transition in radius, so that a smooth freer trains pass into the branch is possible. This type of turnouts can be found in Germany also still in Zeppelinheim station ( Riedbahn, branch to the mainline train station airport).
Rhine Valley Railway to Heidelberg, threading of the high-speed line
High-speed line Mannheim -Stuttgart, North West portal of the role mountain tunnels, branch to connect curve Ubstadt towards Heidelberg.
Connecting curve Bruchsal
The single-track line curve Bruchsal threaded at the tap point Bruchsal Nord ( abbreviation: RBRR ) in a northeasterly direction from the route of Karlsruhe and Bruchsal. South of the tracks of the high-speed line flowing into the south of the tracks of the Ubstadter curve.
The curve crosses the B 3 and crosses the tracks of the route Bruchsal- Odenheim. She cuts the county landfill Bruchsal into two halves.
Branching point Bruchsal Rollenberg
Against the north west portal of the tunnel Rollenberg there are five tracks that merge within the area of the portal to three: the two main lines of the high-speed line and the southwest lies track from Bruchsal / Heidelberg. Shortly after the portal threaded the third track into the southwestern route track. Thus, the North West portal of the role mountain tunnel is the only railway tunnel portal in Germany with three tracks. With a cross section of 210 m, it is also one of the tunnel entrances with the largest cross section at a German high-speed line.
Planning and construction
In the planning phase, the area of the branch was in the zoning section 6a ( Ubstadt -Weiher ), which stretched from kilometer 43.736 to 47.775. The plan approval process was initiated in November 1976. On 16 May 1979, a new plan approval process was opened. The objections raised 75 were discussed on 23 November 1981. On March 10, 1983, the Regional Council presented its opinion. Against the zoning decision by April 29, 1983, two lawsuits were filed. He became final on December 19, 1983.
After the planning status of 1973 should, coming from the north, the Rhine Valley line and the main road to cross 3. It should be two 2.4 km and 0.7 km long tunnel to connect. The new line should be linked freely with the height Rhine Valley line. The running in the open incision connecting tracks should thereby partially also run in tunnels. In the southern portion of the curve the tracks towards Stuttgart and Heidelberg should be doing in two separate, single-track, run tubes. The west tunnel ( direction Stuttgart) should it pass under the roller mountain tunnel, just go to the surface and thread the new line southeast of Spiegelberg after another short tunnel. The eastern track ( direction of Heidelberg ), however, should be threaded in the southeastern area of the roll mountain tunnels and also extend to merge with the track the opposite direction in a tunnel. For the connecting curve, a minimum curve radius of 3200 m was provided. The inputs and unloading, in the new line was planned with a radius of 5000 m.
Connecting curve Ubstadt
The up to 160 km / h navigable connecting curve Ubstadt was built between 1984 and 1988. Here, up to 24 meters high and 180 meters wide dams were created and built a total of 950,000 m³ of earth masses, which were obtained from the role Tunnel and its preliminary section. The construction costs were as of about 1986 DM 39 million ( € 20 million).
Originally a branch speed of 130 km / h was provided. In the planning phase, the branch was initially referred to as branch Wiesenthal.
Connecting curve Bruchsal
The connecting curve Ubstadt was added only at the end of the 1980s to the connecting curve Bruchsal. The single-track and is accessible to 100 km / h curve was scheduled later. They should serve the Regional-/InterRegio-Verkehr in South East direction. Another major purpose was to be thought -European high- speed rail link between Paris, Strasbourg, Munich and Vienna ( Magistrale for Europe). On the 45th German - French consultations, it was agreed to examine connectivity of the LGV Est with the new line Mannheim- Stuttgart.
After the end of the 13-month planning approval process in March 1988, the curve was celebrated on 30 September 1988, the first sod. For the subsequently scheduled curve of precut already created the role of mountain tunnels from February 1988 had to be extended.
A problem in the construction phase of the curve proved to be the Durchfahrung the county landfill Bruchsal, whose seal had to be guaranteed from the surrounding groundwater during the construction phase; also had to be relocated 65,000 m³ waste. Already in 1972 concluded plan approval process of the landfill, the Federal Railroad had this need to reschedule to avoid cutting through the garbage dump by the proposed new line and the connecting curve Ubstadt. The expected construction costs of Bruchsal curve amounted to 27 million DM for the approximately 500 m long and - due to the amount of garbage - 10 to 16 m high executed Durchfahrung the landfill area a dozen different solutions were discussed, including various versions of bridges, troughs, tunnels, dams and frame. The to-find solution should both be resistant to harmful landfill influences, on the other hand be insensitive to translations ( were expected 50 cm to 1 m ), and finally as little footprint of the landfill consume. Realized eventually became a 536.8 m long solid dam of 62 blocks. The tender started in January 1989. Construction with an order volume of around DM 16 million ( about eight million € ) began on 17 April 1989 and were completed by 31 July 1990.
The construction cost was estimated at the end of 1988 with 27 million DM. Should operate in a two -hour intervals over the curve for this state of planning an inter-regional line.