Onderzoek, ontwerp en konstruktie van kribben

Detailed analysis of river groynes, extensive literature overview, additonal study on fiction and friction coefficients of several material interfaces (especially between rock and geotextile). Aanlysis of erosion downstream of a groyne with the method of Garde. Field tests.

Snel zand: Een onderzoek naar een nieuwe pick-up functie voor sediment bij hoge stroomsnelheden

De laaggelegen delen van Nederland en de gebieden langs de rivieren worden tegen hoog water beschennd met een stelsel van waterkeringen, waaronder dijken. Over dijkbouw is veel bekend, maar over het bezwijken van een dijk veel minder. Dit is wel een steeds belangrijker wordend onderwerp. In de probabilistiek wordt met het mogelijk falen van een...

Prefeasibility study for the Port of Itajai

In southern Brazil, in the province of Santa Catarina, the port of Itajai is situated. The port is located at the mouth of the river Itajai-Acu, about 3 km inland. The Port of Itajai is very important for both the local and national economy because of its role in foreign trade, and due to this prominent role in the community many stakeholders...

Erosion processes and bed level maintenance strategies in the tide-influenced branches of the Rhine-Meuse delta

Due to the closure of the Haringvliet in 1970 as part of the Delta works and the opening of the Beerdam in 1997, the course of the tidal flow in the Rhine-Meuse delta has changed. The tidal flow from and towards the Haringvliet is now completely taking place through the branches that connect the Haringvliet with the Nieuwe Maas and Nieuwe...

Scour below the toe of breakwaters: Investigation of scour formation through a geometrically open filter configuration located at the toe of a rubble mound breakwater lying upon sand

Scour formation at the toe of a rubble mound breakwater can lead to abrupt failure. Nowadays, counteraction of scour via geometrically closed filter rules, geotextiles or combinations is the common practice. Alternatively, in specific cases the use of geometrically open filters can save significant amount of time and decrease constructional...

Stability of slope material affected by bow thrusters at open quay structures

In the last decades shipping has increased significantly, resulting in larger ships with an increasing power in bow thrusters. Due to this increasing power, the hydraulic loads at bottom protection near quay structures has also increased, making a traditional bed protection more expensive. Therefore an alternative design method is suggested in...

Predicting scour around offshore wind turbines using soft computing techniques

In this report a prediction method is developed for scour around monopiles. A soft computing technique called genetic programming (GP) is used to create a scour prediction formula that can compute scour in all offshore conditions, meaning current-induced, wave-induced and combined current- and wave-induced scour. The GP was trained with an...

Gravity Based Foundation: Scour and design optimisation

Within Royal HaskoningDHV an innovative concept is thought to be feasible as a new foundation for larger wind turbines in deeper waters. In this thesis the development of this innovative offshore wind turbine foundation was aided. The research focused on two topics: - Scour at this gravity based foundations. - Possible design optimisations with...

Scour holes in tidal rivers with heterogeneous subsoil under anthropogenic influence

Over one hundred scour holes are located in the Rhine-Meuse delta. These scour holes have relatively large depths and steep slopes and could pose a risk to the stability of river banks and hydraulic structures, especially since some scour holes are still growing. Scour holes develop at locations where either the hydrodynamics or the erodibility...