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Andreas Freitag Dipl.-Ing. Rüdiger Englert Dipl.-Ing. Dr.-Ing. Dipl.-Wirtsch.-Ing. Matthias Schäfers 《Stahlbau》2020,89(5):475-481
Horkheim weir on the Neckar River – general refurbishment Horkheim weir is located on the Neckar River and represents – in combination with the lock, the power station and a flood control gate – the next upstream barrage towards Heilbronn. The weir itself is located at the upstream end in the Horkheim Altneckar river section. The weir was built from 1927 to 1929. In 2008, the WSV (Wasserstraßen- und Schifffahrtsverwaltung des Bundes [Federal Waterways and Shipping Authorities]) decided on a general refurbishment of the weir due to the structures age-related condition and transferred the planning authority for this project to the Amt für Neckarausbau Heidelberg (ANH [office for Neckar development, Heidelberg]). For this purpose, the ANH commissioned the planning consortium consisting of the two engineering firms IRS Stahlwasserbau Consulting AG (Würzburg) and Weber-Ingenieure GmbH (Heilbronn) to plan the general refurbishment activities. Planning was primarily based on DIN 19704 (Hydraulic steel structures), DIN 18800 Part 1-3 (Steel structures, applicable standard at that time), and EN 1993-1-1 for the fatigue analysis of the fishbelly flap. 相似文献
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Experience with the recalculation of five weir systems according to TbW The age structure and the associated condition of the weirs in Germany will demand far-reaching construction measures at numerous facilities in the coming years. Concurrently, the personnel resources for the implementation of these tasks are limited. Therefore the Wasserstraßen-Neubauamt (WNA) Aschaffenburg is pursuing a concept for determining the repair or replacement requirements for the weirs on the Main. In order to explore and estimate the urgency and scope of individual measures at the weirs, the condition of the weirs at Freudenberg, Rothenfels, Steinbach, Harrbach and Erlabrunn are first examined in greater depth. The internal stability of the existing weir piers will be examined within the scope of the condition assessment. This is accomplished on the basis of the BAW instruction sheet “Bewertung der Tragfähigkeit bestehender, massiver Wasserbauwerke (TbW)”. Using the example of the Erlabrunn weir system, the procedure is described here and conclusions are drawn. It was shown that especially the recalculation of the non-reinforced concrete components in the area of the sealing niches is a great challenge. Furthermore calculation approaches for the detailed verifications in these areas are shown. By considering five weir systems similarly, a subsequent comparison is given, which enables a priorition oft he basic repairs. 相似文献
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M.Eng. Simon Weiler M.Sc. Birte Barthel B.Eng. Tobias Merklein M.Eng. Andreas Stapp 《Bautechnik》2024,101(4):244-250
Building in the river: major maintenance of the Kachlet weir system after 100 years of operation The Kachlet weir system is one of the largest weir systems on the German Rhine-Main-Danube waterway and is reaching a 100-year service life. In order to ensure the continued navigability of the Danube, a major overhaul will be carried out in which the weir base will be preserved, the piers upgraded and the weir superstructure and hydraulic steelwork as well as the technical equipment completely renewed. New approaches are being considered for this particular challenge, especially in terms of construction logistics. As a construction aid for the planned construction project, a portal crane system will be erected above the weir system, which will enable the project to be carried out with a high degree of prefabrication and, as a result, a comparatively short construction period. However, the portal crane system also brings new challenges with it, that need to be taken into account during planning. 相似文献
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