The Lehrter Bahnhof in Berlin, Germany, has been under construction since 2000 and will be finally opened in 2006. The station is the mayor project for a high speed train crossing of the main European railway routes connecting North-South, East-West. The East-West-viaduct carries the steel-glass roof, which is sensitive to vertical movement in the level of its bearings, especially during construction work on site. Since the East-West tracks have been taken into service in May 2002, BAM operates a Longterm-Monitoring-System to control settlements as well as surface strains of prestressed concrete bridges, influenced by construction processes at the station. To ensure the longterm stability of new sensors enhanced at BAM, experimental investigations on model beams have been carried out in the laboratory and under environmental conditions.

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