Extended characterization of damage in rubble mound scour protections

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020-06-01

Autores

Tiago Ferradosa (Autor) FEUP; Welzel, M. (Autor) Outra; Schendel, A. (Autor) Outra; Baelus, L. (Autor) Outra; Paulo Rosa Santos (Autor) FEUP; Francisco Taveira Pinto (Autor) FEUP

Revista

Título: Coastal Engineering

Vol. 158 Nº 103671

Páginas: 1-13

ISSN: 0378-3839

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

ISI Web of Science

Scopus - 10 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-00R-TQ4

DOI: 10.1016/j.coastaleng.2020.103671

Abstract (EN): The analysis of damage in rubble mound scour protections is crucial for the armour stability assessment. Former methodologies focused on the analysis of the maximum damage number. This work introduces a complementary methodology to determine and characterize damage statistical distribution based on a flexible arrangement of sub-areas. The sub-areas are overlapping and can be varied in size, allowing a refined damage analysis. To capture the variation of damage with changing sub-area layout, the methodology is coupled with a statistical evaluation of damage numbers, which is enabled by the definition of a grid ratio between armour stone size and sub-area size, (D-n50)(2)/A(sub). The methodology is applied to high resolution bathymetric surveys from two stability tests of large-scale rip-rap scour protection around a monopile foundation and combined wave and current loading. Results show that the methodology provides a complementary understanding of damage distribution to the maximum damage acquired from previous methodologies. In addition, it allows a comparison of damage characteristics between tests despite different shapes of the foundation. Research concludes that the size of the sub-areas influences significantly the damage description. Characteristic measures as the maximum damage number and standard deviation become stable at a grid ratio (D-n50)(2)/A(sub) equal to 1/4.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13