Ground freezing is a state-of-the-art construction method that significantly reduces the impact on the subsoil and the surrounding areas. The method is used, among other things, when drilling from the surface is impossible due to dense urban development or geographical constraints. This was precisely the case with the extension of underground line 5 into the “Europaviertel” district in Frankfurt am Main (Germany): In the highly sensitive, densely built-up inner city location, the tunnel construction work had to be carried out without damaging the existing buildings and without obstructing the above-ground traffic.
Although the use of steel fibres for shotcrete or concrete segments can significantly improve the CO2 footprint, their use is still not widespread in Europe. The example of construction lot 16-1 of the Grand Paris Express (GPE) rapid transit network in France shows how the interaction of innovatively thinking construction partners not only creates cost savings, but also benefits the environment.
On the eve of the STUVA 2021 conference in Karlsruhe, the general meeting of STUVA-YEP (STUVA Forum for Young Engineering Professionals) could finally take place again – of course in compliance with...
On July 8, 2022, the next Munich Tunnelling Symposium will take place at the University of the Federal Armed Forces Munich in Neubiberg. The organizers are the university‘s sponsoring association “Förderverein Konstruktiver Ingenieurbau” and STUVA. The lectures will be held in German.
After the Swiss Tunnel Congress (STC) could not be held with personal attendance in the past two years due to the covid pandemic, the STC 2022 can now take place again in the established form in the concert hall of the KKL Lucerne from 1 to 3 June 2022.
Porr Romania was commissioned by the state road company CNAIR to design and build the Sibiu–Pitești motorway, section 4 (Tigveni–Curtea de Argeș). This 9.86 km long section includes a 1.35 km long...
On January 27, the WTC 2022 Organizing Committee and the ITA have announced that the World Tunnel Congress 2022 in Copenhagen will take place at Bella Center from Friday September 2 to Thursday September 8, 2022, instead of April 22 to 28.
In Germany and Switzerland, the realisation of large-scale projects is always the subject of controversial discussions. The media often give the impression that there is a lot wrong in Germany and that everything is fine in Switzerland. It is therefore investigated whether such an assessment for large underground construction projects is justified according to scientific criteria. For this purpose, a measurement system was developed to evaluate the success of large underground construction projects based on seven success criteria. This system was applied to 70 large underground construction projects in Germany and Switzerland. In addition to a quantitative comparison of the two countries, this article highlights differences with regard to the individual success criteria. The results show that large underground construction projects in Switzerland are not conclusively more successful than in Germany. However, the decisive factor for the respective project success is the quality of cooperation among the project participants.
With well over 1000 registered participants, numerous exhibitors and hundreds of trade visitors, the STUVA Conference 2021 at Messe Karlsruhe did not set a new attendance record, but in view of the pandemic situation the number of participants was simply overwhelming. A total of 2900 industry professionals attended the conference.
The Brenner Base Tunnel BBT SE has invited tenders for the Pfons–Brenner construction lot (H53) with an estimated contract value of 855 million euros (net) throughout Europe. The contract will be awarded according to the best bidder principle. In addition to the price, qualitative criteria will also be taken into account in the evaluation. The deadline for bids is 16 May 2022, 12 noon.
