The main structure is composed by a reticular spatial structure with layout dimensions of 340 metres longitudinally and 52 metres transversally.
The height of the reticular structure is gradually reduced from 3.6 metres to about 0 metres according to a double split profile.
It has 20 point supports: on columns standing out from the +9.00m height of the existing bridge structure, on new columns standing out from the height of -4.50m or on the reinforced concrete elements of the stairs body, lifts and service lift bodies.
The main reticular structure bears 8 particular structures called “Suspended volumes” suspended by tubular hangers; they are composed by planking made of both steel and timber and a roofing of a steel tubular structure.
Due to the particular shape of the volumes, the roof structure is vertically connected to the supporting hangers by a vertical regulation system that ensures, during erection, to get the final correct position; steel profiles of the roof must then be fixed to the hangers so that no relative horizontal movements are provided.
Structural detail design
Ferrovie dello Stato Italiane
60 000 m2
Cost of the project