It’s one of the biggest infrastructure projects in Switzerland: The third tube of the 2 mile (3.2 km) long Gubrist Tunnel is scheduled to open in 2022 as part of the northern bypass route around the city of Zurich. With a diameter of 52 ft 6 in (16 m), it is the largest tunnel tube in the country, and is intended to ease chronic congestion on the route by providing three additional lanes toward St. Gallen and Berne. The demands on the road construction method were correspondingly high. The approximately 22,046 US t (20,000 metric tons) of asphalt had to be paved on a tight schedule, meeting the highest quality standards, in the face of complex tunnel logistics, while navigating the need to work side by side and in heavy traffic. Contractor Marti AG Solothurn decided to manage the project using a digital road construction solution. “As one of the largest construction companies in Switzerland, the Marti Group has for years been actively driving digital transformation in all its sectors, from building construction to civil engineering. On a project of this scale, it was obvious to us that we should deploy a solution that would not only allow us to map the planning digitally, but also to actively control the processes on the job site,” says Civil Engineering Operations Manager Cedric Berrut.
Integrated system solution from the paver manufacturer
The WITOS Paving Plus from VÖGELE was the chosen application. The process optimization solution software interlinks all the parties involved, from the site manager, mixing foreman and paving foreman, to the paver operator. It consists of five modules: Control, Materials, Transport, Jobsite, and Analysis. That means job site planning, mix supply and transportation, the asphalt paving, and subsequent process analysis can all be managed by a single system in real time. It enables just-in-time delivery to the job site and continuous paving without having to stop the paver, among other benefits. The paving team is able to respond in a targeted way to any disruptions in the process. Berrut continues: “A benefit from our point of view is that WITOS Paving Plus is an integrated solution precisely matched to the pavers by their manufacturer, so we have direct access to all the machine data.”