Study Of Force On The Bucket Foundation Flat Breakwater Structure

With the development of marine resources and the continuous development of port logistics trade in the world,port engineering buildings in coastal areas are also being built,but the traditional breakwater structure has the disadvantages of affecting water exchange,unfriendly environment and high cost.The layered slab breakwater structure can effectively solve these problems,but the research on the mechanical characteristics of the structure has yet to be carried out.This article uses a combination of physical model tests and numerical simulations to study the structural stress,the main work and the conclusion is as follows:(1)The sectional model test was carried out in the two-dimensional flume using the gravity similarity criterion to measure the total force of the wave load.The analysis of the wave load is a time-history curve.It is found that the total vertical wave force of the multi-layer flat breakwater structure has obvious and stable periodic characteristics.At the same time,it provides a verification basis for the correctness of the numerical simulation calculation results.(2)Based on the Fluent software,the numerical model of the interaction between the wave and the multi-layer flat breakwater structure is established,and the correctness of the numerical model results is verified by the physical model test results.The influence of various factors on the maximum vertical total wave force on the structure is analyzed,and it is found that the total vertical wave force of the multi-layer flat breakwater structure is mainly affected by the relative plate width and relative wave height.The calculation formula of the total vertical wave force of the flat breakwater structure is fitted by the least square method.The basic characteristics of the synchronous wave pressure distribution are analyzed,and it is found that the total vertical wave force of the structure is mainly contributed by the upper and lower surfaces of the second layer,and the other plates contribute less.The influence of various factors on the synchronous wave pressure distribution is analyzed.(3)Based on the Abaqus software,a numerical model of the structure under the action of the maximum vertical wave total force was established,the internal force of the structure was calculated,and the influence of various factors on the internal force of the structure was analyzed.The internal force of the structure under the action of the total wave force is mainly affected by the wave height and plate spacing.(4)According to the wave conditions in Shandong Yantai LNG project,the optimization results of the structure optimization are carried out according to the wave-reducing effect of the multilayer flat breakwater structure.The economic principle of the lowest cost gives the optimization results of structural plate thickness and connecting column spacing,and finally the structural application is combined with the bucket foundation.This article uses a combination of physical model testing and numerical simulation to carry out a series of studies on the stress of the multi-layer flat breakwater structure,and has a deeper understanding and understanding of the stress characteristics and laws of the structure in different situations.And the structure has been further optimized according to the actual project to make it more in line with the requirements of the actual project.