Viaducts Lot 781/782 – ATG junction – Camorino

Client

Consorzio MPC Lotto 781 and Consorzio MPC Lotto 782 (Matteo Muttoni Costruzioni SA_Pizzarotti (Suisse) SA_CSC SA)

End client

AlpTransit San Gottardo SUD SA

Design and site management

Consorzio Ingegneri Piano di Magadino / Consorzio ANTA – Anastasi & Tarchini

Construction techniques

MAG welding

Pantograph cutting

Laser cutting

Bending

Description of the work

The project concerns the construction of two single-track railway viaducts connecting the Ceneri Base Tunnel to the existing double-track Bellinzona–Locarno railway line. Viaduct 781 (Lugano–Bellinzona line) has a total length of approximately 1’010 linear metres, while viaduct 782 (Bellinzona–Lugano) has a total length of 500 m.

Start and end of works

2013-2016

Role of JODA Metalcostruzioni

Suppliers of the metalwork (parapets, steel and glass parapets forming noise barriers, inspection doors for the structure’s bearings, shaped stainless steel sheets at the expansion joints, etc.).

Technical features and descriptions

Hot-dip galvanised parapets consisting of IPET posts with welded base plates, top handrails in 42.4 mm diameter tubes and protective grilles made of angle sections infilled with 30 x 30 x 3 mm welded mesh, for a total of approximately 1’850 metres of parapet.

Hot-dip galvanised parapets/noise barriers consisting of IPET posts with base plates, infilled with laminated, toughened and screen-printed glass, for a total of approximately 955 metres and 1’430 m2 of glass.

Protective doors/plates for the piers (bearings) made of laser-cut and bent sheet metal, fitted with stainless steel square-key locks, for a total of 33 pieces.

Laser-cut and bent stainless steel sheets forming the covers of the viaduct’s expansion joints