14106 research outputs found
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Zwischenbericht des Themenfeldes 3 im BMDV-Expertennetzwerk für den Zeitraum 2020–2022
No full textAutorinnen, Autoren und weitere Mitarbeitende:
Bundesanstalt für Gewässerkunde (BfG): Thomas Artz, Freya Stumpf, Florian Zimmermann
Bundesanstalt für Straßenwesen (BASt): Kalliopi Anastassiadou, Iris Hindersmann, Ulrich Schmelter, Stefan Staub
Bundesanstalt für Wasserbau (BAW): Jörg Bödefeld, Marcel Hasselder, Julia Kasper, Charly Kühne, Stefan Lühr, François Marie Nyobeu Fangue, Lilly Plumer, Georg Pranner, Sophie Rüd, Franz Simons, Pia Stejskal
Deutscher Wetterdienst (DWD): Michael Denhard, Jens Winkler
Deutsches Zentrum für Schienenverkehrsforschung beim Eisenbahn-Bundesamt (DZSF): Anna Bodenko, Martin Friese, Mark Sastub
Multi-site study of the efficiency of coastal protection measures in the Comoros Islands
No full textGAIA can model large marine dunes: Results from a sensitivity study in the southern North Sea
No full text
Ermittlung der Erosionsparameter von bindigen Böden mittels des Hole-Erosion-Tests
No full textDer Tagungsband "Vorträge der Fachsektionstage Geotechnik - Interdisziplinäres Forum 2023, Congress Centrum Würzburg, 12. - 13. September 2023" erscheint im Open Access und ist hier kostenfrei abrufbar: https://www.dggt.de/index.php?option=com_content&view=article&id=397%3Atagungsband-fstg&catid=45%3Apublikationen&Itemid=6
Die Berechnung von Lebenszykluskosten (LZK) von Wehranlagen
No full textFestschrift ist online verfügbar unter: https://leopard.tu-braunschweig.de/receive/dbbs_mods_0007271
On the design of bank revetments at inland waterways subjected to ship-induced water level drawdown: A probabilistic infinite slope analysis
No full textTo protect embankments along German inland waterways against local slope sliding failure caused by ship-induced water level drawdown, they are mainly secured by bank revetments. Often, large embankment sections are designed on the basis of a limited number of field and laboratory tests. Thus, uncertainties arise with regard to the mechanical and hydraulic ground properties. Current design standards account for these uncertainties by conservative design assumptions and empirical knowledge. This paper investigates the effects of vertically non-homogeneous ground properties on the required armour layer thickness using 1D random fields and an infinite slope model, which was modified to account for ship-induced drawdowns. Within the limitations of the infinite slope assumptions, the effects of a spatially variable friction angle and hydraulic conductivity are investigated and compared to deterministic benchmark cases. The investigations show that the level of safety obtained with the deterministic design depends strongly on the choice of the characteristic values. Particularly, the hydraulic conductivity determines the reliability of the design. In some cases, the 5 % quantile of the hydraulic conductivity does not yield a conservative estimate of the required armour layer thickness. In the case of the effective friction angle, the 5 % quantile may overestimate the required armour layer thickness for permeable soils. For less permeable soils, the 5 % quantile meets the solution of the random field analyses. For the combination of random effective friction angle and random hydraulic conductivity, all investigated benchmark studies seem to ensure engineering safety, but on different reliability levels. Based on these findings, recommendations regarding site exploration and choice of characteristic values of hydraulic conductivity and effective friction angle are provided