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Mooyaart, L.F. (author), Bakker, A.M.R. (author), van den Bogaard, J.A. (author), Jonkman, Sebastiaan N. (author)
Coastal defenses must be upgraded to combat increasing flood risk due to climate change and other factors. Storm surge barriers, large movable hydraulic structures that close temporarily during storm surges to prevent coastal floods, play a vital role in protecting estuaries. Due to the complexity of their risk analyses, important improvements...
conference paper 2023
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Weber, Jochem (author), Marquis, Melinda (author), Cooperman, Aubryn (author), Draxl, Caroline (author), Hammond, Rob (author), Jonkman, Jason (author), Lemke, Alexsandra (author), Lopez, Anthony (author), Mudafort, Rafael (author), Optis, Mike (author), Roberts, Owen (author), Shields, Matt (author), Hallissy, Benjamin (author)
conference paper 2022
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Lengkeek, H.J. (author), Jonkman, Sebastiaan N. (author), Kanning, W. (author)
Parameter determination is the first step in geotechnical engineering. Engineers are often confronted with limited data, large variations and different types of tests, both in-situ and laboratory tests. Within this complex setting, Codes require cautious estimates, so called characteristic values, preferable substantiated with observations and...
conference paper 2021
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Pol, J.C. (author), van Klaveren, W. (author), Kanning, W. (author), van Beek, V.M. (author), Robbins, B. (author), Jonkman, Sebastiaan N. (author)
Most research on backward erosion piping (BEP) focuses on the critical conditions leading to failure. This paper studies the development of piping over time once the critical conditions are exceeded, which is useful to estimate time to failure. A commonly used small scale rectangular box setup is modified in order to monitor pore pressures and...
conference paper 2021
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Janssen, D. (author), Schmets, A.J.M. (author), Hofland, Bas (author), Dado, E. (author), Jonkman, Sebastiaan N. (author)
Dikes are designed to withstand a load, with a certain finite probability of occurrence. In case of crises regarding to flood safety, the military is expected to prevent low-laying areas against flooding. Historical attempts show that the effectiveness of emergency measures and strategies are mainly successful caused by the adequate acts of the...
conference paper 2021
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Torres Alves, G.A. (author), Morales Napoles, O. (author), Jonkman, Sebastiaan N. (author)
A submerged floating tunnel (SFT) is a novel structure that allows crossing waterways where immersed tunnels or bridges are not viable. However, no SFT has been built yet mainly, due to lack of experience. In consequence, there are several uncertainties regarding its design and construction. An effect that should be further investigated is the...
conference paper 2021
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Pol, J.C. (author), van Beek, Vera (author), Kanning, W. (author), Jonkman, Sebastiaan N. (author)
Backward erosion piping is an important failure mode of dikes and dams. The time required for the backward erosion process to result in dike failure is expected to be an important factor in the safety of dikes. This holds especially in coastal and estuarine areas which are dominated by storm surge, and pipes may not fully develop during a storm....
conference paper 2019
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de Almeida Sousa, E. (author), Hofland, Bas (author), Jonkman, Sebastiaan N. (author)
The study of wave impact physics and magnitudes are key for the design of vertical coastal hydraulic structures. This research addresses the study of standing wave impacts on vertical coastal hydraulic structures with a relatively short horizontal overhang, which is especially relevant for structures such as lock gates, sluice gates, dewatering...
conference paper 2019
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Roubos, A.A. (author), Allaix, D. L. (author), Steenbergen, R. D.J.M. (author), Fischer, K. (author), Jonkman, Sebastiaan N. (author)
General frameworks for reliability differentiation have evolved over time and are mainly developed for new buildings. However, recommendations for existing quay walls are lacking. In this study target reliability indices for assessing existing quay walls were derived by economic optimisation and by evaluating the Life Quality Index criterion ...
conference paper 2019
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Tieleman, Orson (author), Hofland, Bas (author), Jonkman, Sebastiaan N. (author)
This paper describes a first case study of the application of a newly developed fluid-structure interaction model to the design of flood gates. The gates in the Afsluitdijk, that will be replaced in the coming years, are considered. Due to the presence of a concrete beam in front of the gates breaking wave can occur, leading to high impact...
conference paper 2018
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Weeda, Tomas (author), de Gijt, J.G. (author), Bakker, K.J. (author), Braam, C.R. (author), Broos, Eric (author), Jonkman, Sebastiaan N. (author)
As a result of the persistent increase of container vessel dimensions, future problems regarding navigation draught in the presence of tunnels are becoming more likely to occur. Hence, possible solutions to this problem have been investigated for the Beneluxtunnel. Several design options have been elaborated to determine the technical and...
conference paper 2017
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van Elsäcker, W.A. (author), Besseling, F. (author), Lengkeek, H.J. (author), Brinkgreve, R.B.J. (author), de Gijt, J.G. (author), Jonkman, Sebastiaan N. (author)
Liquefaction induced by earthquakes has shown to have potential devastating influence on seismic performance of anchored quay walls. Therefore, measures to mitigate liquefaction are commonly part of the design of quay walls in<br/>seismically active regions. Such mitigation measures are costly. Moreover, these measures are difficult to implement...
conference paper 2017
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Vuik, V. (author), Jonkman, Sebastiaan N. (author), van Vuren, S. (author)
Vegetated foreshores such as salt marshes, mangrove forests and reed fields can reduce wave loads on coastal dikes due to depth-induced wave breaking and wave attenuation by vegetation. Here we present field measurements of wave propagation over salt marshes during severe storm conditions, a modelling approach to describe the effect of...
conference paper 2016
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Jonkman, Sebastiaan N. (author), Maaskant, B. (author), Kolen, B. (author), Needham, J. T Jason (author)
This paper presents an overview and review of methods developed for loss of life estimation in flood risk assessment. These methods range from empirical to simulation based approaches that are used to support flood risk analyses and emergency management. Similarities and differences between the modelling approaches, input and output types and...
conference paper 2016
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Kolen, B. (author), Maaskant, B (author), Jonkman, Sebastiaan N. (author), Needham, JT (author)
Both in the USA and in the Netherlands, extensive studies on approaches for identifying flood risks (the combination of levee failure probabilities and consequences) are ongoing. A related topic concerns evacuation and emergency management (EEM). The magnitude of life loss is directly influenced by the effectiveness of EEM. Different models can...
conference paper 2016
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Özer, I.E. (author), van Damme, M. (author), Schweckendiek, T. (author), Jonkman, Sebastiaan N. (author)
Flood defense failures are rare events but when they do occur lead to significant amounts of damage. The defenses are usually designed for rather low-frequency hydraulic loading and as such typically at least high enough to prevent overflow. When they fail, flood defenses like levees built with modern design codes usually either fail due to wave...
conference paper 2016
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Jonkman, S.N. (author), Schweckendiek, T. (author)
This paper presents and overview of advances in flood risk and levee reliability analysis in the Netherlands. It is described how new safety standards – in the form of a target failure probability – have been derived on the basis of nationwide flood risk assessments which taken into account both economic risk and risk to life. The process for...
conference paper 2015
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Jonkman, S.N. (author), Schweckendiek, T. (author)
This paper presents and overview of advances in flood risk and levee reliability analysis in the Netherlands. It is described how new safety standards – in the form of a target failure probability – have been derived on the basis of nationwide flood risk assessments which taken into account both economic risk and risk to life. The process for...
conference paper 2015
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Chan, G. Kok Yan (author), Sclavounos, P.D. (author), Jonkman, J. (author), Hayman, G. (author)
conference paper 2015
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Klerk, W.J. (author), Kok, M. (author), de Bruijn, K.M. (author), Jonkman, S.N. (author), van Overloop, P.J. (author)
In the Netherlands, flood risk analysis is usually carried out for a location, without considering potential flood defence failures in upstream areas. This may result in significant over- or underestimation of flood risks. The effect of upstream failures on failure probabilities and flood risks in other areas is called load interdependence of...
conference paper 2014
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