Executive design of civil works for Naples-Bari
Client
RFI S.p.A.
Location
Italy
Status
In progress
Services
Executive Design
Description of work
Executive design of civil works for Naples-Bari High Speed/ High Capacity railway Line. Naples-Cancello Section
The Cancello variant constitutes the first segment of the Naples-Bari route and, by inserting itself into the new Napoli Afragola station, embodies the integration of the historic lines with the new High Speed system. With the new variant section, 15.5 km of new double-track line will be built. The construction of a new ACCM (Multi-station Computerized Central Apparatus), with Central Post in Naples, will allow, among other things, the elimination of all level crossings present along the historic section thereby improving the overall road system in the area. The structure, in the first km, runs through a highly urbanised area up to the new Napoli Afragola HS Station with an artificial tunnel and then continues through agricultural areas with viaducts and embankments. It is foreseen the realization of a cut and cover tunnel which partially develops below the ground water level. The top down construction will be performed using the compressed air in order to achieve a dry base during the soil excavation and the cast of the internal structures. This method was abandoned a long time ago due to the high risks to workers' health, but to-day, with the latest technology and with a careful control of all the health implications, can be safely applied to prevent ground water inflow, where the required lowering of the water table does not exceed 10 m.