“…If the wave force and the wave run-up caused by external wave loads become too large, the safety of whole structure will be threatened. So far, many studies have been carried out for the wave force and wave run-up on the cylindrical structures by numerical or experimental methods (Bonakdar et al, 2016;Mohseni et al, 2018;Chen et al, 2020;Ha et al, 2020), on the other hand, mitigation of wave loads for such cylindrical structures is also worth to be considering.…”