Search Results: 'Hochtief'

Looking ahead for stability
14 November, 2000
While TBM technology has made various degrees of rapid face stabilisation possible during excavation, it can be a much more difficult task with open face excavation where TBMs are deemed not suitable. Yet even here ground control is becoming more and more sophisticated.

Downtown double for Düsseldorf subway
11 June, 2000
It was in 1997 that a tender was issued for the construction of a 1123m shield-driven tunnel to carry a double track metro line linking the southern suburbs of Dusseldorf with the central station and downtown area. Chief Geotechnical Eng. S Jancsecz, Geotechnical Eng. J W Ebenhog, Chief Structural Eng. E Gurkan and Structural Eng. E Tuchscherer of the Department of Tunnelling and Underground Construction, Wayss & Freytag AG, Frankfurt am Main report on the project, the particular problems faced and how they were overcome

Driving the Elbe Tunnel
30 March, 2000
The meeting of the BTS on January 20 took place in London at the Institution of Civil Engineers and was devoted to a paper by Martin Herrenknecht of Herrenknecht International on the Fourth Elbe Road Tunnel in Hamburg.

Segmental lining
27 January, 2000

North-south in Berlin
25 January, 2000
Changes to design and the near catastrophic flooding of a main tunnel caisson have resulted in the construction of central Berlin's missing transport route - the north-south rail link - slip from its original planned completion of 2002 to latest estimates of 2005. However, with the start of the final set of TBM tunnel drives, Lot 3 construction supervisor Lahmeyer International believes the project is now on the home stretch.