Study On Wave Interaction With Perforated Caisson Sitting On Rubble Mound Foundation

With the development of port and coastal engineering,the perforated caisson structure has been widely concerned and applied.The perforated caisson structure has the advantages of reducing the wave reflection before the structure,reducing the wave force of the structure and reducing the project cost.Many scholars at home and abroad have done a lot of research on the interaction between wave and perforated caissons.However,most scholars have assumed that perforated caissons are placed on rigid flat beds without considering the effects of complex terrain or rubble mound foundations.In the actual engineering,the caisson structure is often built on complex terrain or rubble mound foundations,so it is of great significance to study the interaction between wave and complex terrain and the perforated caisson structure sitting on rubble mound foundations.This article mainly focuses on the following two aspects of the in-depth study:The mathematical model of the interaction between waves(including regular waves and irregular waves)and the perforated caissons on the terrain topography is established,and the theoretical solutions and experimental results of other scholars have been verified.Then the main influencing factors and changing regularity of the reflection coefficient on the terrain are analyzed and discussed by the mathematical model method proposed in this paper.The reflection model of the interaction between the wave and t the perforated caisson structure sitting on rubble mound foundations is analyzed by the physical model experiment.The simplified calculation formula of the reflection coefficient is given by the single factor analysis and the multiple regression method,and the main influencing factors of the reflection coefficient are discussed.In addition,it is compared with other existing scholars.It is proved that the simplified formula proposed in this paper can calculate the reflection problem of perforated caisson under the condition of the rubble mound foundation and the rubble filled foundation.