Advancing probabilistic design of submerged floating tunnels

Doctoral Thesis (2025)
Author(s)

C.M.P. 't Hart (TU Delft - Hydraulic Structures and Flood Risk)

Contributor(s)

Sebastiaan N. Jonkman – Promotor (TU Delft - Hydraulic Engineering)

Oswaldo Morales-Napoles – Promotor (TU Delft - Hydraulic Structures and Flood Risk)

Dirk Jan Peters – Copromotor (TU Delft - Hydraulic Structures and Flood Risk)

Research Group
Hydraulic Structures and Flood Risk
More Info
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Publication Year
2025
Language
English
Research Group
Hydraulic Structures and Flood Risk
ISBN (print)
978-94-6510-640-3
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Abstract

The design of submerged floating tunnels (SFTs) is a challenging task, as it is often seen as a potential alternative water crossing measure for wide and deepwater environments, and the challenge is to find ways to design and construct it economically and reliably. The aim of this thesis is to provide tools for the design and assessment of SFTs. The approach is divided into three parts: first common overarching topics are addressed, to introduce the subject, but also to introduce common theoretical methods and target reliability concepts for structures and specifically for SFT. The second part is the application of probabilistic design and the use of both non-parametric Bayesian Networks and Vine Copulas, the analysis of traffic loads on an SFT and the quantification of the probability of failure due to bending moments, and a dynamic mooring analysis (DMA) is used on a hypothetical SFT model. The results of the research programme will be utilised to translate them into procedures for design and assess SFT in the first place, and also to use them in other fields of application within the industry. Modern numerical modelling tools in combination with experimental work are used to assess the structural behaviour.

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