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General Information
Geographic Information & Related Structures
Technical Information
Dimensions
|
height |
16 m |
| total length |
964 m |
| span lengths |
29.90 m - 21 x 42.75 m - 29.90 m |
| number of spans |
23 |
| bridge surface |
26 456 m2 |
| deck |
width |
2 x 13.53 m |
| deck depth |
3.85 m |
| girder depth |
2.90 m |
| girder width |
4.00 m |
Materials
| deck truss |
steel
|
| deck slab |
reinforced concrete
|
Notes
The innovative design of the Lully viaduct proposes a light and transparent structure made of a triangular cross-section fabricated entirely from unstiffened circular tubes. The result is twin space trusses, with a typical span of 42.75 m. Each transversal triangular cross-section is 2.9 m high and 4.0 m wide, and is supported by a single slender pier. The largest diameters and thickness of the tubes are over 500 mm and nearly 70 mm respectively. Welded overlap K-joints and KK-joints form the brace-to-chord connections along the top and the bottom chords, respectively. The deck slab is connected directly to the top chord by uniformly distributed welded shear connectors.
