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Man-Made Structures
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Solutions for Monitoring - Man-Made Structures |
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Leica Geosystems' surveying solutions are used worldwide for the monitoring of man-made structures such as bridges, dams and buildings, during construction as well as after.
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Many of the hydroelectric reservoirs located in the Alps of Northern Italy are built in narrow valleys which are orientated North-West / South-East. Due to the valley's orientation, only one side is exposed to the sun and is subject to significant temperature differences within short periods of time. In many cases this situation has caused a different geological structure in the two sides of the valley. In one of the valleys a double-sweep arc-gravity dam was constructed in the years 1950-1960. Leggi tutto
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Could the turbines in a new hydro-electricity generating station cause ships to drift within their shipping lanes? Following the construction of a new hydro-electricity generating station on the bend in the River Danube at the lower Bavarian town of Bad Abbach (Germany), it was feared that the operating turbines might have just such an effect. Leggi tutto
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Millions of people have seen it in books and on postcards; millions more have seen it at first hand during a visit to Australia. Survey engineer Steve Denning also knows it from above and below: a quartercentury after the Opera House was inaugurated, his know-how was needed to assess the effects of weather and sea-water on the structure, and fix the wear and tear. The initial task was to restore the granite promenade surrounds and sea wall of the Opera House. Leggi tutto
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With a span of 620m, Yang-Pu bridge is not only one of the longest suspension bridges in the world, but also one of the busiest. Stability and reliability of such a bridge is very important, and regular checks are necessary to provide the highest security. Surveying technology has evolved during the last few years to introduce new systems to improve
the accuracy of measurements and greatly reduce the time needed to perform such tasks. By using automated Leica total stations, able to find the targets automatically, combined with deformation measurement software, results can be viewed directly on site. Leggi tutto
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A network of precise GPS reference stations, supplied by Leica Geosystems, has been installed on the world’s longest suspension bridge in Japan to monitor movements of the bridge’s structure in real-time, with millimetre-level accuracy. Leggi tutto
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Geodetic surveys of Vereina Tunnel - Switzerland Leggi tutto
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The dams and water reservoirs in the German province of Baden-Württemberg are resurveyed every five years as part of an ongoing monitoring programme. One of the sites being checked is the Hornberg reservoir, located in the southern Black Forest on a mountain peak 1050 m above
sea level. The reservoir feeds the Wehr hydroelectric power station, 630 metres further down and operated by Schluchseewerk AG. A study by the Geodetic Institute of the University of Karlsruhe set out to determine whether GPS measurements using Leica Geosystems’ new System 500 might be an economical and sufficiently accurate alternative to conventional terrestrial methods. Leggi tutto
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When a new bridge is being built adjacent to an existing one, there are a number of safety concerns. In particular the deformation and stress factor imposed on the existing bridge during construction. Leggi tutto
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