Reaearch On The Determining Method Of The Thickness Of The Steel Reinforced Concrete Radial Gate Pier Based On Genetic Algorithm

The sluice drain is an important way to drain water,and the design of the gate is the core part of the drainage structure.In recent years,water conservancy construction has the trend of shift to terrain is remote areas,resulting in higher drainage buildings working head,with the increase of water flow and the structure of the pier bearing requirements also increase safety performance.When gate of more water under pressure,due to the shortage of funds,ordinary reinforced concrete gate area is narrow,the limitation of adverse factors such as topography and geology condition at dam site,conventional pier design meets the requirement of structural safety,and increase the pier through infinite thickness to improve the safety performance of the pier structure is not realistic.And the current applications of prestressed concrete pier while partially solve the problem of the bearing capacity of the pier,but also show prominent shortcomings,such as stress concentration,seismic performance is insufficient,the pier neck thickness is bigger.To steel instead of ordinary reinforced concrete pier of the fan bearing steel to improve its carrying capacity,research has some achievements,but the basic are concentrated on the study of pier in steel,for the study of the pier structure design is still lacking,in this paper based on the study of the steel reinforced concrete pier,combined with the advantages of genetic algorithm,the pier thickness and the relationship of load,steel reinforced concrete pier thickness calculation formula has been put forwardIn this paper,based on genetic algorithm optimization criterion,using finite element software ABAQUS by interface language,using the finite element model of steel reinforced concrete pier Python language compile,automation in the process of finite element modeling.According to the current water resources and hydropower engineering drainage buildings in the scope of the radial gate of the total thrust of the gate is always thrust standard 12500 kn respectively,25000 kn and 35000 kn,45000 kn and 55000 kn and 65000 kn of six plan,respectively for symmetric and asymmetric load cases of sluice pier thickness,search for the optimal solution to the optimization of the pier thickness as the load corresponding to the pier thickness,establish the pier thickness and the relationship of load.Study the following conclusions:(1)Using genetic algorithm combined with finite element,finite element optimization model of steel pier,and can solve the problem for optimal design of steel reinforced concrete arc gate pier thickness.(2)Inside the pier with three sections to 25° extension Angle to decorate a form,using the genetic algorithm,multiple iterations by steel reinforced concrete finite element optimization programs,in 0.4～7 m,respectively,within the limits of the feasible region search to the six schemes under symmetric and asymmetric load of the optimal value of objective function,the optimal value is the thickness of the steel reinforced concrete pier.The optimized results show that the optimal values of the six scheme gate pier thickness under symmetrical load are 0.6 m,1.1 m,1.2 m,1.4 m,2.7 m and 3.5 m respectively.Under the asymmetric load,the optimal values of the six schemes are 2.3 m,2.8 m,3.3 m,3.7 m,3.9 m and 5.5 m respectively.The corresponding gate thickness of the six schemes is 2.3 m,2.8 m,3.3 m,3.7 m,3.9 m and 5.5 m respectively.(3)With ABAQUS program set up corresponding to different load of steel reinforced concrete model of different thickness of the pier,from the pier displacement,stress distribution and stress of crack development,steel performance analysis and evaluation of the pier,six gate is verified in this paper to determine the total thrust scheme of sluice pier thickness is reasonable.(4)Data analysis tool with the aid of EXCEL software,using linear regression analysis method to analyze the linear dependence of the pier thickness and load,establish the thickness of the steel reinforced concrete pier B(m)of the corresponding relationship between total thrust F(kN)mathematical fitting model,and puts forward the pier thickness calculation formula of initial B = 5x[10]^(5)F+ 1.4895.