Breakwater Wave Force Calculation Based On Artificial Neural Network Algorithm

Coast is the border between land and sea, and coastal waters have very vital significance to human activity today. Breakwater is one of the most important hydraulic structures in port and coastal engineering. Wave force is usually the main external load. The destruction of wave forces to the coastal constructions is a widely concerned problem all the time. Breakwater takes direct pressure of wave force, once destroyed, the consequence is serious. At the same time, breakwaters are mostly built upon somewhere water deep and wave big. With the development of social economy of the coastal areas, human activity is increasingly frequent there. More and more coastal engineering brings a large amount of investment. The risk of project is arising people's concern. Higher requirement to the degree of accuracy is to be present to the marine environment factors such as wave force. Wave force calculation plays an important role on offshore engineering design, offshore production operations and near shore environmental protection. So it is an important and urgent task, which our engineering circle is facing, to provide precise practical offshore wave force calculation method.Marine environment is very complicated, wave force of offshore construction performances as a nonlinear dynamic process, which is influenced by many factors. Their interaction is also difficult to determine. In the past few years, with the development of the information technology, especially the Artificial Intelligence Technology, a new way has been presented for the wave impact force prediction. Because artificial neural network has very strong ability processing complex nonlinear problem, this paper uses an improved BP network algorithm to establish wave force calculation model. The specific work is as follows.In this paper, physical model experiment of regular wave under different working conditions in front of vertical breakwater has been done, and the wave forces have been measured. The wave force affecting on the breakwater has been explored through a physical model experiment.Aiming at vertical breakwater section of different cases of physical model experiment, wave force has been figured out by using commonly used methods in home and abroad. The results by different methods have been compared.In this paper, on the basis of research achievements of the vertical breakwater wave action test, according to the relationship between the wave impact force and wave period, wave height and the depth before the vertical breakwater, wave force computation model based on the artificial neural networks method has been designed and carried out. By using the improved BP Algorithm of the artificial neural network, numerical simulation has been done to the wave force of the breakwater. More and more coastal engineering brings a large amount of investment. Because the research of this aspect is still in the initial stage, this research has important significance no matter from the theory or engineering.