Climate Adaptation of Rubble Mound Breakwaters: A study to the accuracy of overtopping formulas for combination of solutions

Rubble mound structures are often constructed to prevent severe wave damage to ships. By constructing the crest at a certain level, the waves are reduced such that safety is ensured. However, a large increase in sea level rise is expected in the next century due to climate change. Because of this, multiple adaptations might be necessary to meet...

Dynamic shoreline response to a shallow concentrated nearshore berm nourishment

Worldwide, coastal regions are pressured due to sea-level rise and the increased likelihood of extreme events. Traditionally, hard engineering techniques were used for shoreline protection. However, due to the negative side effects at adjacent beaches, a switch was made to more sustainable soft solutions, such as nearshore berm nourishments....

Hydrodynamics below a closed fallpipe system: The profile of a rock berm acquired with rock placement operations

In the offshore industry rock is used for different kind of applications, such as scour protection and pipeline protection. In deep water operations, but also increasingly in shallow water operations, use is made of the method by guiding the rock from the water surface to the seabed with a fallpipe. During a rock placement operation a current...

Probabilistic Design of Relief Wells as Piping Mitigation Measure

The traditional Dutch way to deal with piping for river levees is the implementation of piping berms. The disadvantage of such a measure is the inland space required, especially in urban areas. Relief wells, on the other hand, require less or no inland space and therefore represent an attractive solution as mitigation measure against piping. The...

Wave overtopping at rubble mound breakwaters with a non-reshaping berm

This thesis focuses on wave overtopping at rubble mound breakwaters with a non-reshaping berm. The research was aimed at gaining insight into the influence of a permeable berm on the overtopping behaviour. Moreover it was desired to validate existing prediction methods for the spatial distribution of overtopping for breakwaters with a non...

Breakwater roundheads under construction exposed to oblique waves

Construction of breakwaters is performed consecutively from core layer, filter layer, up to the armour layer. During construction, excessive damage is often encountered on core layers due to environmental conditions. The damage behaviour of core layers is similar to berm breakwater structures, where the initial profile is reshaped into a more...

Stability of Iceland type berm breakwaters

A major part of the breakwaters constructed in the world are the so-called conventional rouble mound breakwaters, which consist of a core, a filter layer and a heavy armour layer. An alternative to the conventional rouble mound breakwater is a berm breakwater. Berm breakwaters have mainly developed in two directions over the last couple of...

Armour layer stability on a bermed slope breakwater

In coastal regions where the land is sensitive to erosion, but also for harbours and ports, numerous types of defensive structures have been developed to protect it from the effects of incident waves. More recently breakwaters have been constructed which combine the stability characteristics of a conventional two-layered uniform sloped...

Water controlling water

This project discusses the feasibility and effectiveness of emergency measures against river floods. The objective of the project is: To develop a method or system to temporarily increase the dike strength during flood wave conditions. Here, the dike strength in its broadest sense is meant. This means that besides the crest height also other...

Probabilistische kostenafweging tussen een conventionele golfbreker en een bermgolfbreker

Een van de meest toegepaste typen golfbrekers is de conventionele golfbreker. Dit is een constructie van meerdere lagen natuursteen soms afgedekt met een of twee lagen betonblokken waarbij verplaatsingen van elementen over het talud niet worden toegelaten. Een bermgolfbreker, opgebouwd uit meer, maar lichtere steen kan goedkoper zijn. Het idee...