Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydro-morphological effects of bridge-crossings on large braided/anabranched sand-bed rivers
In large rivers, most bridge crossings locally reduce the transverse floodplain width. This leads to adverse hydro-morphological effects, such as river bed and bank erosion, as well as increased upstream flood levels. In this study, we used a 2D morphodynamic model developed in Delft 3D to investigate the hydro-morphological impact of bridge span. The tool was applied to the Talibwala Bridge across the Chenab River in Pakistan. Our findings indicate that not only the length but also the location of the bridge span across the floodplain and bridge orientation influence the river hydro-morphodynamics. Smaller bridge spans exert more pronounced impacts, particularly during high flood events. We highlight that bridge span enlargement can serve as an effective intervention to reduce the adverse effects of existing bridges. These results emphasize the importance of considering the morphological river response during the design phase of bridges and of using morphodynamic instead of hydrodynamic models for flood level assessments.
Hydro-morphological effects of bridge-crossings on large braided/anabranched sand-bed rivers
In large rivers, most bridge crossings locally reduce the transverse floodplain width. This leads to adverse hydro-morphological effects, such as river bed and bank erosion, as well as increased upstream flood levels. In this study, we used a 2D morphodynamic model developed in Delft 3D to investigate the hydro-morphological impact of bridge span. The tool was applied to the Talibwala Bridge across the Chenab River in Pakistan. Our findings indicate that not only the length but also the location of the bridge span across the floodplain and bridge orientation influence the river hydro-morphodynamics. Smaller bridge spans exert more pronounced impacts, particularly during high flood events. We highlight that bridge span enlargement can serve as an effective intervention to reduce the adverse effects of existing bridges. These results emphasize the importance of considering the morphological river response during the design phase of bridges and of using morphodynamic instead of hydrodynamic models for flood level assessments.
Hydro-morphological effects of bridge-crossings on large braided/anabranched sand-bed rivers
Akram, Muhammad Rizwan (Autor:in) / Khan, Muzaffar (Autor:in) / Crosato, Alessandra (Autor:in)
Journal of Applied Water Engineering and Research ; 13 ; 59-80
02.01.2025
22 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Planform changes in large braided sand-bed rivers
| UB Braunschweig | 1993
Design of bridge crossings on meandering rivers
| Springer Verlag | 1990
Design of bridge crossings on meandering rivers
| Online Contents | 1990
Morphodynamic effects of vegetation and large wood in braided rivers
| HENRY – Bundesanstalt für Wasserbau (BAW) | 2014