The structure is a cable-stay bridge constituted by
- a steel-box deck 160m long;
- a steel-box pylon 118m high;
- an anchor structure, called “parapet”, 74m long.
The steelworks are anchored to the ground by means of several holding down bolts of
diameter included between Ř45 and Ř140mm.
The total weight of the steelworks adds up to 4,200ton.
The pylon is connected to the deck and to the parapet by means of steel cables (Ř30, 40 and
50, with maximum length equal to 142m).
The pylon structure has an inclination of 30° in its own plane and of 15° towards the parapet
and it includes four stabilizing cables Ř90.
The strict architectural and urban requirements, the amazing shape of the elements with
imposed asymmetric geometries, the challenging weight-less appearance with reduced
sections but extremely high thicknesses make of this steel structure the most difficult and
delicate bridge ever conceived by Calatrava and, probably, by whoever architect or designer.
Cimolai reviewed the structural design in strict cooperation with the studio Calatrava S.A.,
considering the erection and the exercise phases and simulating the structural behaviour with
a Finite Element Method model.
The definition of the model was as much challenging and complicated as the structure
The following load combinations were considered and run:
• 137 SLU load combinations;
• 127 SLE load combinations.
Some parts of the structure, designed according to the architectural requirements, resulted in
being complicated and highly stressed. For an accurate investigation of the structural
suitability of these parts, some sub-models were generated in detailed brick elements.
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