The Nuevo Necaxa-Tihuatlan highway in Mexico covers a distance of 85 km through the states of Puebla and Veracruz. It was built by Connet, a joint venture of FCC Construcción (Spain) and the Mexican...
Journalist Roland Herr discussed the market, margins and tunnellers with Dr. Klaus Rieker, Managing Director of the tunnelling division, Wayss & Freytag Ingenieurbau AG in Frankfurt am Main, Germany. The father of three in his early fifties has been engaged in tunnelling and foundation engineering since 1989 and looks back on international experience in underground construction.
We would like to heartily congratulate our colleague Dr.-Ing. Helmut Grossmann who turned 70 in March 2015. After studying civil engineering at the Hanover TU, Helmut Grossmann embarked on his...
The Esslingen Technical Academy is staging a seminar on June 17 and 18, 2015, involving STUVA’s Dr. Friedrich Krüger, who will also chair it. The seminar will deal with the topic “Protection...
Dr.-Ing. Roland Leucker celebrated his 50th birthday in April 2015. Since 2008 he has been the CEO of the STUVA Inc. also taking over responsibility for the STUVAtec GmbH in 2014. He was able to...
Once again more than 1500 experts from the field of underground construction will get together for the 2015 STUVA Conference, the international forum for tunnels and infrastructure, held from December...
The swing bridge at Sluiskil in the Netherlands' province of Zeeland crosses the canal from Gent to Terneuzen. It is a bottleneck for road traffic: The bridge opens on average 23 times a day for a total of up to five hours in order to enable ships to pass. This led to long waiting times for traffic south of the Westerschelde Tunnel, which opened in 2003. After four years of construction the twin-bore Sluiskil Tunnel opened in May 2015, which now enables an uninterrupted flow of traffic.
In recent years serious accidents have occurred frequently at pedestrian traffic light crossings spanning the urban railway tracks in Cologne. The reasons for accidents involving pedestrians or...
When shotcrete is used in tunnelling, a stable and robust shotcrete system is essential for safe and economical construction. In order to ensure a robust system, the reactive components of the concrete (cement, superplasticizer, accelerator) have to be coordinated. The article describes the Accelerator System Test (German: Beschleuniger-Systemtest BEST), which can be used to coordinate these components. On the Stuttgart–Ulm rail project, the BEST was used successfully to remedy unsatisfactory shotcrete performance.
The authors of this article believe that the best methods for excavation of the Brenner Base Tunnel are mechanized – specifically using either open-type or shielded hard rock tunnel boring machines....
