A Study on the Hydroelastic Response of Very Large Floating Structure with Floating Breakwater in Waves

Abstract

In recent years, the use of very large floating structures in the seafront areas for various infrastructure facilities such as a floating airport is becoming more popular and important. For such a huge floating structure like an airport, the elastic deformations due to the dynamic effects of waves cannot be neglected in comparison with the motion as rigid body, because it has a very small vertical dimension compared to its longitudinal and lateral dimensions.A linearized analysis of the motions of a very large floating structure with floating breakwater is presented in this paper. The hydroelastic interactions of the elastic deformations and the hydrodynamic forces are discussed. Present predictions are compared with the avail results based on the other method and experimental data. The influences of some parameters (bending rigidity and water depth) to the motion responses have been investigated by the present method.For the floating airport, it is imperative that investigations on the effectiveness of floating breakwater and rigidity of the floating airport to decide and understand its sea worthiness. In the present mathematical model, the hydrodynamic interactions between the floating airport and the floating breakwater are considered. The effectiveness of the floating breakwater (including the multiple floating breakwater) as the protection of the floating airport is investigated. According to sea condition and design criteria, many parameters related to floating breakwater system can be discussed by the proposed method.