Abstract:The stable mass of armor units for breakwaters is a key concern in breakwater design.In terms of the wave stability of armor units for sloping breakwaters,this paper introduces a classic industry case study—the design of the deepwater breakwater at Sines Port in Portugal in the 1970 s and its damage during storms.and it compares and analyzes the stable mass calculation methods of armor units in domestic and international design codes.Using the Hudson formula,the paper re-evaluates the stability of the dolos armor units used in the Sines Port breakwater design,revealing that the mass of the dolos used was insufficient.Comparisons of calculation results from Chinese and European ROM codes show that under deepwater conditions(H/d＜0.3),the safety factor calculated by the Chinese code is higher than that of the European ROM code,while the opposite is true under shallow water conditions(H/d≥0.3).The research results can provide a reference for better understanding and applying domestic and international design codes.
