Study On The Size Of Large-scale Prefabricated Beam Platform And The Optimization Of Beam Field Layout

In the planning and construction of high-speed railway,the bridge is a large number of ways to use,so that the bridge in the railway construction is indispensable,occupy an important position,and the prefabricated beam as a bridge in the construction of the main components to promote the prefabricated beam The field played a very important role in the construction of the whole line.Therefore,it is more and more important to study the location and layout of the beam field in terms of the location of the precast beam field and the optimization of the size and layout of the precast beam field.However,most of the research contents of the prefabricated beam field are based on the working experience of the construction workers and the lack of a scientific theoretical method to guide the construction of the precast beam field to ensure the rational use and optimization of the resources.This research topic is put forward according to the existing problems.The main contents are as follows.(1)This paper summarizes the research contents of the site selection of the prefabricated beam site and the optimization of the beam field scale at home and abroad,analyzes and summarizes the relevant research methods at this stage,and on the basis of the present situation,Research the issue,put forward the article's technical route.(2)In the aspect of site selection,the influencing factors and site selection principles of prefabricated beam field in the process of site selection are considered,and the importance of influencing factors is analyzed to find out the key factors.Then the distance between the alternative point and the demand point is taken as the objective function,and the distance between the candidate point and the demand point is calculated by multiplying the demand point coordinates,and the distance between the two points is multiplied by the distance between the corresponding The regional transport rates are given the minimum weight distance,and the location is obtained by optimizing the minimum weight distance.In this paper,the position of the candidate points is optimized by using the programming function of Excel as the tool,and the optimal location coordinates are obtained.(3)In view of the shortcomings of the current research results,considering the different requirements of the prefabricated beam during the erection process,the beam-beam process is calculated by the beam-girder rate.Optimization method of beam-receiving platform under unbalanced condition.In the optimization process,the mathematic model is established by combining the layout cost of the beam platform and the mathematical model,and then matlab is used as the tool to solve the mathematical model,and the optimal combination of the beam table is obtained.(4)According to the optimized number of beams and beams,the area of the beam area and the beam area is calculated,and the layout pattern of the beam field is solved by combining the area of other functional areas in the original scheme.In the study,the multi-objective function is established with the minimum flow rate and the maximum land use rate.The model is solved by using the Gaussian Newton iteration method to form the layout between the various functional areas of the beam field,and then the layout is adjusted according to the actual situation.The layout of the program.Based on the mathematical model established in this paper,the beam field in a railway line is taken as an example.The research results of this paper are applied to the actual project.The algorithm is realized by Matlab programming language,and the optimization result is obtained.The optimization scheme and the original scheme The validity and validity of the research results are verified by comparison and analysis.