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Reliability updating for lateral failure of historic quay walls

Hemel, M. (author), Peters, D.J. (author), Schweckendiek, T. (author), Jonkman, Sebastiaan N. (author)

The historic canal walls of Amsterdam, stretching 200 km in total, are constructed as a masonry wall on a timber deck supported by vertical timber piles. Understanding the resistance against lateral failure of these quays has been challenging due to uncertainties in their working principles, geometry, soil and structural properties. This...

journal article 2024

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Metamodelling for geotechnical reliability analysis with noisy and incomplete models

van den Eijnden, A.P. (author), Schweckendiek, T. (author), Hicks, M.A. (author)

A kriging-based metamodelling approach for analysing the structural reliability of a sheetpile wall in a dyke is formulated. This specific problem is characterised by high target reliabilities ((Formula presented.)) in combination with a noisy and incomplete numerical model response. Starting from the original formulation of active learning...

journal article 2021

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Improving dike reliability estimates by incorporating construction survival

van der Krogt, M.G. (author), Schweckendiek, T. (author), Kok, M. (author)

During construction of a dike, slope stability often reaches critical levels, due to the excess pore water pressures in the foundation. The loading condition during construction has similarities with the design conditions during flood loading. Not only in terms of the pore water pressures as the main driving force, but also in terms of...

journal article 2021

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Value of information of combinations of proof loading and pore pressure monitoring for flood defences

van der Krogt, M.G. (author), Klerk, W.J. (author), Kanning, W. (author), Schweckendiek, T. (author), Kok, M. (author)

Spatial variability and limited measurements often result in low reliability estimates of geotechnical failure modes of dikes (i.e., earthen flood defences). Required dike reinforcements are usually not executed within a few years after inception, which enables efforts to improve reliability estimates by reducing uncertainty. Often decision...

journal article 2020

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Finite element-based reliability assessment of quay walls

Roubos, A.A. (author), Schweckendiek, T. (author), Brinkgreve, R.B.J. (author), Steenbergen, R. D. J. M. (author), Jonkman, Sebastiaan N. (author)

While reliability methods have already been widely adopted in civil engineering, the efficiency and robustness of finite element-based reliability assessments of quay walls are still fairly low. In this paper, the reliability indices of structural and geotechnical failure modes of two real-life quay walls are determined by coupling...

journal article 2020

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Time-dependent reliability analysis of service-proven quay walls subject to corrosion-induced degradation

Roubos, A.A. (author), Allaix, Diego L. (author), Schweckendiek, T. (author), Steenbergen, Raphael D.J.M. (author), Jonkman, Sebastiaan N. (author)

The assessment of service-proven quay walls subject to corrosion-induced degradation is inherently a time-dependent reliability problem. Two major challenges are the modelling of corrosion and taking into account the decrease of epistemic uncertainty throughout the quay wall's service life. The main objective of this study is to examine the...

journal article 2020

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Impact of including interdependencies between multiple riverine flood defences on the economically optimal flood safety levels

Dupuits, E.J.C. (author), Klerk, W.J. (author), Schweckendiek, T. (author), de Bruijn, K. M. (author)

In risk analysis of riverine flood defence systems, sections of flood defences are often considered separately, herewith ignoring their interdependence, e.g. due to the hydraulic response following dike breaches in the system. In previous studies it has been found that such interdependence can have a significant influence on flood risk estimates...

journal article 2019

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Risk-based target reliability indices for quay walls

Roubos, A.A. (author), Steenbergen, Raphael D.J.M. (author), Schweckendiek, T. (author), Jonkman, Sebastiaan N. (author)

Design codes and standards rely on generalised target reliability indices. It is unclear, however, whether these indices are applicable to the specific risk-profile of marine structures. In this study, target reliability indices for quay walls were derived from various risk acceptance criteria, such as economic optimisation, individual risk ...

journal article 2018

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Quantifying the failure probability of a canal levee

Lendering, K.T. (author), Schweckendiek, T. (author), Kok, M. (author)

Polders in the Netherlands are protected from flooding by flood defence systems along main water bodies such as rivers, lakes or the sea. Inside polders, canal levees provide protection from smaller water bodies. Canal levees are mainly earthen levees along drainage canals that drain excess water from polders to the main water bodies. The...

journal article 2018

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Economic optimization of coastal flood defense systems

Dupuits, E.J.C. (author), Schweckendiek, T. (author), Kok, M. (author)

Coastal flood defense systems can consist of multiple lines of defense. In case of a system with a front and a rear defense (e.g. a storm surge barrier and levees), the front defense can improve the reliability of the rear defense by reducing the load on this rear defense. This paper develops a framework in order to assess whether including...

journal article 2017

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Incorporating Observations to Update the Piping Reliability Estimate of the Francis Levee

Kanning, W. (author), Bocovich, C. (author), Schweckendiek, T. (author), Mooney, M.A. (author)

Piping failure of levees is one of the main contributors to flood risk. Piping occurs when the head difference over a levee results in uplift of the inland blanket, followed by backward erosion in the aquifer due to high local flow velocities. Whether piping occurs, highly depends on local geo-hydrological circumstances which are uncertain due...

conference paper 2015

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Developments in levee reliability and flood risk analysis in the Netherlands

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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Developments in Levee Reliability and Flood Risk Analysis in the Netherlands

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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On reducing piping uncertainties: A Bayesian decision approach

Schweckendiek, T. (author)

Dikes and levees play a crucial role in flood protection in deltaic areas such as the Netherlands. Internal erosion piping or under-seepage is a major cause of levee failures and a main contributor to the probability of failure of river levees due to the large (mostly geotechnical) uncertainties. The present thesis investigates how geotechnical...

doctoral thesis 2014

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Advances in reliability analysis of the piping failure mechanism of flood defences in the Netherlands

Schweckendiek, T. (author), Kanning, W. (author), Jonkman, Sebastiaan N. (author)

Piping is one of the main failure mechanisms for flood defences. This paper gives an overview of recent developments in the reliability analysis for this mechanism in the Netherlands. These comprise new approaches in the treatment of heterogeneity of the subsoil with respect to the failure process, the inclusion of information from field...

journal article 2014

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Re-assessing reliability based on survived loads

Schweckendiek, T. (author)

The reliability of flood defenses is often dictated by large uncertainties in the hydraulic loading and the structural resistance. Additional information decreases uncertainty, however, acquiring it is often costly. One source of information, even though in many cases readily available, is hardly used – survived loads. This article shows how...

conference paper 2011

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Calibration of piping assessment models in the Netherlands

Lopez De La Cruz, J. (author), Calle, E.O.F. (author), Schweckendiek, T. (author)

New insights into the failure mechanism piping (under-seepage) regarding the physical process as well as reliability aspects have led to a revision of the Dutch design and safety assessment rules for dikes. This paper describes how the required factor of safety for piping is derived from a top level requirements formulated in terms of an...

conference paper 2011

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A Factor of Safety for Geotechnical Characterization

Schweckendiek, T. (author), Calle, E.O.F. (author)

conference paper 2010

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Updating piping probabilities with survived historical loads

Schweckendiek, T. (author), Kanning, W. (author)

Piping, also called under-seepage, is an internal erosion mechanism, which can cause the failure of dikes or other flood defence structures. The uncertainty in the resistance of a flood defence against piping is usually large, causing high probabilities of failure for this mechanism. A considerable part of this uncertainty is of epistemic nature...

conference paper 2009

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Reliability analysis of a hydraulic fill with respect to liquefaction and breaching

Schweckendiek, T. (author), Van den Ham, G.A. (author), De Groot, M.B. (author), De Gijt, J.G. (author), Hudig, P. (author), Brassinga, H.E. (author)

A recently reclaimed site in the Port of Rotterdam will serve as location and foundation of an LNG terminal. LNG (Liquefied Natural Gas) is recognized as hazardous material and underlies strict safety requirements. As part of the safety assessment of the entire installation, a specific analysis had to be carried out concerning the geotechnical...

conference paper 2009