چكيده به لاتين
Breakwaters are most important and also more expensive of coastal structures. Rubble mound breakwaters are most common type of this structure in the world. Due to depth of Persian Gulf waters in the near of the coastlines of Iran and local construction conditions such as material availability and construction machinery limitation, the rubble mound breakwater is one of the main options to build in ports and harbor. The main goal of this structure is wave power's depreciation and thus protect of the ports leeward, so optimization can take into account to minimize the total cost.
The breakwater design process is complex. The process should integrate the technical aspects with environmental, economic and other factors together. As technical aspects, design method should consider several failure modes, constraints and requirements simultaneously, so achieving to this objective is very hard.
The result of the geometry optimization maybe minimizes the total cost of the rubble mound breakwater with satisfying safety index and probability of failures. In this case, software optimization solutions such as GA (Genetic Algorithms) and GAMS (General Algebraic Modelling System) help to perform economic results. Armor stability, toe stability and overtopping have been considered as failure modes. Bounds of variables and other requirements have been considered in accordance with common codes, standards and practical design criteria.
In this paper, each optimization methods have been developed then have been applied to two case studies, which were constructed and are operating in the Persian Gulf. In the last part, the results have been compared to conventional methods.
Keywords: rubble mound breakwater, cost optimization, Genetic Algorithms, GAMS, failure modes
