SS 117 Viaducts of the route “Centrale Sicula”

Design of steel decks and steel pier caps of the Rogillo I and II, Montagna and Salice viaducts.

Category: Road bridges
Services: Detailed design
Period: December 2017 – August 2018
Client: LMV S.p.a. ANAS S.p.a.
Total weight: about 3500 tons
Amount: €7.744.681,90 (S.04 [formerly IXB])

Road viaducts in a composite steel-concrete structure realized with continuous beam of 3 spans (40 + 60 + 40 m , total length of 140m) for the Rogillo I viaduct, 5 spans (45.50 + 3×56.00 + 41 , 50 , total length of 255m) for the Rogillo II viaduct, 6 spans (25 + 45 + 2×66 + 64 + 41, total length of 307m) for the Montagna viaduct, 6 spans (36.5 + 4×61 + 49.5, total length of 330m) for the Salice viaduct.

Road viaducts in a composite steel-concrete structure realized with continuous beam of 3 spans (40 + 60 + 40 m , total length of 140m) for the Rogillo I viaduct, 5 spans (45.50 + 3×56.00 + 41 , 50 , total length of 255m) for the Rogillo II viaduct, 6 spans (25 + 45 + 2×66 + 64 + 41, total length of 307m) for the Montagna viaduct, 6 spans (36.5 + 4×61 + 49.5, total length of 330m) for the Salice viaduct.

The cross section of the deck has an overall width of 12.75 m with a carriageway width of 11.25 m. The cross section has two main beams with a central secondary beam. The slab, that is 22 cm thick, is cast on steel predalles. The joints are bolted.
The decks rest on the piers by means of steel pulvins and are seismically insulated by double curved surface devices and shear key; the seismic behaviour has been analysed in a non-linear field.

The cross section of the deck has an overall width of 12.75 m with a carriageway width of 11.25 m. The cross section has two main beams with a central secondary beam. The slab, that is 22 cm thick, is cast on steel predalles. The joints are bolted.
The decks rest on the piers by means of steel pulvins and are seismically insulated by double curved surface devices and shear key; the seismic behaviour has been analysed in a non-linear field.

Bridge over the Adige river in Egna

Executive design and assembly of steel bridges.

Category: Road bridges
Services: Detailed design
Period: May 2019 – December 2020
Client: Bit s.p.a.
Amount: 3.082.329,96 € S04 (IXb)

The bridge over the River Adige is composed by a single span of 81.4m with a bowstring arch supporting a 6.5m-wide carriageway, a pedestrian walkway and a cycle path.
It consists of a straight steel deck with an orthotropic plate, supported by a single steel archinclined at 20° from the vertical and located laterally, in an eccentric position with respect to the longitudinal axis. The arch has an irregular pentagonal box and a jib of 13.5 m from the deck. The arch-bridge connection is made by means of welded I-shaped hangers with variable section.

The bridge over the River Adige is composed by a single span of 81.4m with a bowstring arch supporting a 6.5m-wide carriageway, a pedestrian walkway and a cycle path.
It consists of a straight steel deck with an orthotropic plate, supported by a single steel archinclined at 20° from the vertical and located laterally, in an eccentric position with respect to the longitudinal axis. The arch has an irregular pentagonal box and a jib of 13.5 m from the deck. The arch-bridge connection is made by means of welded I-shaped hangers with variable section.

The deck consists of a multi-cellular box with 5 webs and a maximum height of 1.6m with diaphragms spaced by 3.3m. The cycle path and the pedestrian walkway, with an effective width of 2.8m and 2.5m, are supported by I-section cantilevers with variable height and placed in correspondence of the diaphragms. The pedestrian path progressively distances itself from the roadway proceeding towards the centre line.

The deck consists of a multi-cellular box with 5 webs and a maximum height of 1.6m with diaphragms spaced by 3.3m. The cycle path and the pedestrian walkway, with an effective width of 2.8m and 2.5m, are supported by I-section cantilevers with variable height and placed in correspondence of the diaphragms. The pedestrian path progressively distances itself from the roadway proceeding towards the centre line.