Experimental Study On Wave Forces On The Parapet Wall Of Sloping Breakwater With Accropode Armor Blocks

The stress load of the slope embankment breast wall has always been an important control index for slope embankment design.The safety of the breast wall of the slope embankment has a direct impact on the stability of the water area behind the slope embankment,which in turn affects the safety of the structure and the life and property safety of the operators.Accropode armor blocks means a wide range of applications including engineering design and construction these years.However,the accurate calculation method to the stress of the breast wall of the slope embankment of accropode armor blocks protective surface is lacking in the relevant codes such as "Hydrological Codes for Ports and Channels" and "Code for Design and Construction of Slopes ".Therefore,many scholars have made exploratory study in this direction.As for the previous research achievements,many factors affecting the stress of the breast wall of the slope embankment of accropode armor blocks could be seen,and the current research results have their limitations.So,it is very necessary to carry out further research on the stress of the breast wall of the slope embankment of accropode armor blocks.This paper summarizes the research direction of previous people and decides to carry out in-depth research on the slope embankment(m = 1.5)of accropode armor blocks protection surface by two methods: physical model test and numerical simulation.In this paper,first of all,through the physical model test,we systematically studied the changes of the stress of the chest wall under the effect of irregular waves on the slope embankment(m = 1.5)of accropode armor blocks.And comprehensively considering the six influencing factors such as wave steepness,the change law of the stress of the breast wall of the slope embankment is obtained,and through single variable analysis and nonlinear fitting,the chest wall of the slope embankment under the condition of the twisted Wang block is obtained.The dimensionless calculation expression of force under many influencing factors.In order to verify the accuracy of the formula in this paper,the calculated value of the calculation formula obtained by nonlinear fitting is compared with the value of the physical model test in this paper,the relative error is small,and the formula has good accuracy.In order to verify the applicability of the formula in this article,the calculated value of theformula in this article is compared with the previous figure test value,the relative error is small,and the formula has good applicability.Secondly,in this paper,the FLUENT numerical calculation platform is used to carry out the numerical simulation of the stress of the chest wall of accropode armor blocks protective slope slope embankment,and the active absorption wave-forming two-dimensional numerical wave flume is established.The FLUENT calculation platform is used to simulate the torsion of the porous media zone module Wang Zi block body protection area.With the help of the physical model test ideas and data in this paper,the relationship between the inertial resistance coefficient in the porous media zone module and the force of the chest wall is determined,and the inertial resistance coefficient value of the corresponding working condition is determined by exponential function line interpolation,and then summarized The formula for calculating the inertial drag coefficient is given.The calculation results of the formula obtained through numerical simulation are in good agreement with the experimental values of the physical model,which shows that the numerical simulation in this paper has high validity and accuracy,and has opened up the research field of the stress of the breast wall of the slope embankment of accropode armor blocks.The research method of combining model and numerical model has opened up the research ideas in this field and laid a good foundation for the research direction of protective block.In this paper,through the physical model test and numerical simulation,the in-depth study on the stress of accropode armor blocks slope embankment breast wall is carried out,which enriches the research content in this field.The research results have been verified to be reasonable and effective,and have a good reference for engineering design and application.