الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
As a result of climate changes that led to sea-level rise, some coastal structures have been affected, their functional efficiency has been reduced because of increasing deterioration rates and failure. By the time, coastal structures suffer from some deterioration or failure which must be classified and assessed to provide decision-makers with suggested solutions to solve this problem. Efforts and studies must be directed to solve this problem to adapt to the surrounding environmental phenomena so the monitoring of the coastal structures must be executed from one time to another. This study aims to assess the deterioration and failure of a coastal structure to get proposed solutions to solve this problem. Deterioration and failure reasons of coastal structures have been discussed. An overview of different failure reasons and the induced loads have been discussed. Rosetta Revetment has been assessed as a case study. Fieldwork monitoring programs have been executed during the period from 2011 to 2020 to investigate the deterioration and collapse along the Rosetta revetment at different times. The results show that the deterioration rate within the revetment armour layer increases dramatically within the last seven years and the failure units exceed 10% of the total units. The numerical model has been investigated to examine the effect of the dynamic loads which come from the projectile broken units on structural stability and efficiency. Computational Fluid Dynamic numerical models have been used for studying the interaction between the fluid and the coastal structure with the existence of some broken units then the resulting part velocities have been set as a dynamic load on a collision Finite Element Method numerical model. It was observed that the velocity of induced waves increased with increasing the ratio between the wave height and water depth. Also, moving broken units have a significant effect on the fracture of concrete units.