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Neu-Ulm 21 Rail Development Project, Neu-Ulm, Germany
Adaptable and fast due to rentable system components
The rail connection between Stuttgart and Munich is an important element of the European railway system. For quicker and more effi cient transportation, new track positioning and complete re-development of four tracks was required. In the Neu-Ulm inner city area, the route was laid deeper along a length of 3.6 km In a 1,483 m long trough structure, the rails run about 8 m below the level of the road. This meant important through roads could be re-directed over the tracks and more areas of the city were available for development and landscaping. Altogether 525,000 m³ earth had to be moved in order to lay 21,000 m of track.
The PERI solution consisted of the construction of the bottom plate, reinforced concrete walls and tunnel sections as well as two underpasses.
With VARIO GT 24 girder wall formwork, the massive 1.20 m thick and up to 8.50 m high reinforced concrete walls could be cost-effectively realized. Instead of using push-pull-props, adjustment and transfer of wind loads took place via heavy load spindles and steel walers to the sheet piling on the side. The tunnel sections with lengths of 170 and 250 m, were constructed as twin-tube box crosssections using the separate casting method, and concreted with standard cycle lengths of 18 m. In each case, two PERI tunnel formwork carriages – one behind the other – and four carriages next to each other provided optimal adjustment to the varying track and structural radii. PERI engineers had to take into consideration the widening of the cross-section within the tunnels which increased the overall width from 24 to 35 m. For this, GT 24 formwork girders were telescoped as a cantilever to the tunnel centre and supported with MULTIPROP slab props. For the 13 m and wider cross-sections, an additional MULTIPROP table in the centre of the tunnel resulted in a reduction of the filler areas. The fact that the tunnel formwork carriages could also be used as support construction for the realization of cantilevered slab areas for the trough wall brought site crews considerable cost advantages. PERI UP reinforcement scaffold ensured that steel fixers could work quickly and safely.
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| PERI Systems In Use |
GT 24
PERI UP Rosett
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Franz Frick
Supervisor
“With the PERI solution we achieved an optimal cost-benefit effect. The fomwork carriages could be easily adapted to the different tunnel widths in weekly cycles. For the trough walls, we saved on tie points and achieved fast moving times using the VARIO system. And the PERI UP reinforcement scaffolds were also quickly re-positioned and provided safe working conditions.”
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| Contractor: |
Ed. Züblin AG, Stuttgart |
| Field Service: |
PERI Weissenhorn, Germany |
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Field Service:
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PERI GmbH, Deutschland
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PERI Handbook 2008
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