Crownwall Failure Analysis through Finite Element Method

Dermentzoglou, Dimitrios; Castellino, Myrta; De Girolamo, Paolo; Partovi, Maziar; Schreppers, Gerd-Jan; Antonini, A.

doi:10.3390/jmse9010035

Crownwall Failure Analysis through Finite Element Method

Title

Crownwall Failure Analysis through Finite Element Method

Author

Dermentzoglou, Dimitrios (Student TU Delft)
Castellino, Myrta (Sapienza University of Rome)
De Girolamo, Paolo (Sapienza University of Rome)
Partovi, Maziar (DIANA FEA)
Schreppers, Gerd-Jan (DIANA FEA)
Antonini, A. (TU Delft Coastal Engineering)

Date

2021

Abstract

Several failures of recurved concrete crownwalls have been observed in recent years. This work aims to get a better insight within the processes underlying the loading phase of these structures due to non-breaking wave impulsive loading conditions and to identify the dominant failure modes. The investigation is carried out through an offline one-way coupling of computational fluid dynamics (CFD) generated wave pressure time series and a time-varying structural Finite Element Analysis. The recent failure of the Civitavecchia (Italy) recurved parapet is adopted as an explanatory case study. Modal analysis aimed to identify the main modal parameters such as natural frequencies, modal masses and modal shapes is firstly performed to comprehensively describe the dynamic response of the investigated structure. Following, the CFD generated pressure field time-series is applied to linear and non-linear finite element model, the developed maximum stresses and the development of cracks are properly captured in both models. Three non-linear analyses are performed in order to investigate the performance of the crownwall concrete class. Starting with higher quality concrete class, it is decreased until the formation of cracks is reached under the action of the same regular wave condition. It is indeed shown that the concrete quality plays a dominant role for the survivability of the structure, even allowing the design of a recurved concrete parapet without reinforcing steel bars.

Subject

Breakwater
Civitavecchia recurved parapet
Crownwall
FEM
Failure
Finite element analysis
Fluid dy-namics

To reference this document use:

http://resolver.tudelft.nl/uuid:12459814-c0a8-4693-95e0-e1db8c8299e3

DOI

https://doi.org/10.3390/jmse9010035

ISSN

2077-1312

Source

Journal of Marine Science and Engineering, 9 (1), 1-17

Part of collection

Institutional Repository