Bridges
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Solutions for Engineering - Bridges |
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Leica Geosystems is a pioneer in bridge construction - our instruments have been used in significant projects including the Oresund Link (Sweden/Denmark), Millau Viaduct (France) and the largest arc bridge in the world - the LuPu Bridge (China).
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Ten years ago, RTK surveys typically involved two GPS receivers (a base and a rover), a lot of batteries and cables, two radios, a tripod, a pole, and a backpack to carry it all. Today users can choose between a GPS or a GNSS receiver, and a radio or a mobile phone, and it all fits on the pole. With the establishment of RTK networks, they can also choose to work with an RTK rover within these networks instead of setting up their own base-station. Leica Geosystems SmartNet gives users easy access to precise Network RTK data, where they experience the best availability, reliability, and traceability using internationally recognized standards, combined with flexible and affordable subscription options that meet the needs of the local market. more
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Arbizelay´s bridge, 380 meters long, 6 spans high, 5 pylons and 12 meters wide is part of the AP-1 Vitoria - San Sebastián Motorway and is located near the city of Mondragon. Thanks to Leica GNSS technology, it was possible to successfully complete the manoeuvre of incremental launching of the bridge´s deck over the pylons with an error of less than 3 centimetres. more
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With a clearance of about 226 feet (69 m) between Mean Lower Low Water (MLLW) and the span underside of the San Francisco Bay Bridge, there’s usually plenty of room for the world’s biggest ships to pass through on their way to the Port of Oakland. But when one of those ships is loaded with three of the world’s tallest container cranes, maybe there’s not enough room … or maybe there is. The job of deciding fell to Dave Murtha, the Port’s chief surveyor. more
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Once finished, the “Bridge to Russky Island” will connect the city of Vladivostok with Russky Island and it is no exaggeration to say it is “the project of the century”. The bridge will be the largest in Russia and one of the longest worldwide, with a total span length of 3,100 m. The 1.2 billion USD project, also proudly called “The Russian Bridge”, is scheduled to be finished by the opening of the Asia-Pacific Economical Cooperation summit to be held in 2012 in Vladivostok. Leica Geosystems equipment was chosen to execute the surveying work. more
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(Reporter 49, Dec 2003) The highway bridge currently being constructed over the Tarn River in Southern France will be 19 meters higher than the Eiffel Tower. At the time of publication of this Reporter issue, the highest of a total of seven bridge piers will have reached a height of 244m – merely 70% of its full height of 343m together with its steel pylon. The deck of this world’s tallest bridge, which is under construction one hundred kilometers north of Montpellier, will span the Tarn River valley at a height of 270m. more
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Now in the final stages of construction, the Shanghai Lu Pu Suspension Bridge, will soon become the “No.1 Arch Bridge in the World”. The central 550 meter-long steel arch, which spans the new 3,900 meter-long bridge over the Huang Pu River, is 32 meters longer than the current world record holder — the 518 meter-long New River Gorge Bridge, West Virginia, United States. To place the steel arch elements with the highest accuracy, the most precise surveying methods required the use of an automated laser Total Station Leica TCA2003. more
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The “Big Dig” in Boston is the single largest, most complex and technologically challenging highway construction project ever undertaken in the United States. more
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Record-breaking Tsing Ma Bridge. more
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The major civil engineering project currently being undertaken in the northern part of Europe is the construction of a road and rail link to cross ÿresund, the narrow sea passage between Denmark and Sweden. more
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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. more
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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. more
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A Leica TCA 1800 automatic target recognizing precision total station, controlled by the Leica APS Win Software, was in use when a bridge was moved by 23 metres below the Inter City Express main rail axis Mannheim-Frankfurt. This work on the Mannheim- Blumenau railway line was carried out by the Mannheim office of Bilfinger + Berger Bauaktiengesellschaft.
The surveyor responsible for the measured control of the undertaking H. P. Echsle, describes this operation for our readers. more
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Measure inaccessible points sequentially with a high degree of repeatabilty with the Leica TCA2003 Automated total station. more
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