The study of the 3rd Phase of Expansion of the East Breakwater of the Terminal XXI at the Port of Sines was based on its reproduction at a reduced three-dimensional physical model built at a scale of 1:65. The aim of the study was to verify the hydraulic stability and overtopping of the solution proposed by the designer for the extension of the East breakwater. In addition to this solution, alternative configurations were also tested with the aim of optimizing the breakwater design stability.
The tested conditions correspond High and Low tide levels and incident sea waves with wave peak periods of 12 s and 20 s associated with significant wave heights that varied between 6 m and 15 m. The measurement of the wave heights around the breakwater was carried out using resistive probes, at 8 points along the model. The evaluation of the stability of the breakwater was carried out using surveys of the outer envelope of the breakwater's armour layer, made by a position sensor.
Institutions and Work Teams: LNEC – Departamento de Hidráulica e Ambiente