Resumo

PALEMON-ARCOS, Leonardo et al. Wave-structure interaction study to assess the service life of coastal structures. Tecnol. cienc. agua [online]. 2018, vol.9, n.4, pp.1-24.  Epub 24-Nov-2020. ISSN 2007-2422.  https://doi.org/10.24850/j-tyca-2018-04-01.

Abstract The functionality of coastal structures depends on the forces exerted by waves in combination with the mean sea level. Nevertheless, the study of wave structure requires determining the flow during the wave breaking processes, which cannot be solved analytically. Therefore, this work aims to extend an existing methodology to determine the service life of coastal structures using a 30-year wave hindcast and numerical models. For this, we used a maximum dissimilarity algorithm to select 600 representative combinations of waves, and the mean sea level, to simulate the wave-structure interaction using a non-hydrostatic non-linear shallow water equations model, coupled with a structural model. Subsequently, we quantified the failures due to overtopping and sliding associated to the simulated cases. An interpolation technique allowed us to reconstruct the 30-year time series of wave overtopping and wave-forces. Thus, the approach presented made it possible to characterize the failure of structures based on return periods. Moreover, numerical results were employed to calibrate existing semi-analytical models in order to quickly assess structural failure in the study area.

Palavras-chave : Vertical breakwaters; service life; wave-structure interaction; structure functionality.