Research On Solutions To Technical Problems About Route Design Of Cross River Road

With the progress of science and technology as well as the development of economy,the construction of cross-river road will reach a climax during the 14th Five-Year Plan period.In the early stage of cross-river road construction,the planning is often too macro,even without clear planning,so the route design usually plays a role in the cross-river road construction work,the importance of protrude.There are two main technical problems in the design of cross-river road route.The first technical problem is the comparison of line position and the second technical problem is the comparison of bridge and tunnel scheme.Based on the background of Jiangyin Second River Crossing Project,this paper mainly starts from the solution of two technical problems,namely,line-position comparison and bridge-tunnel comparison,and studies the method of evaluation system,so as to improve the work efficiency of the route design of cross-river roads.The main research contents are as follows:(1)Study on the solution of cross-river road route selectionRoute than choose design and no unified regulation method,this paper analyzes the characteristics of the road across the river,across the treatment were given the alternative route of a technical route,secondly according to the principle to select the scheme of line selection,the final model is put forward based on fuzzy matrix across the river in the alternative route of road,evaluation method of solution.Firstly,the feasible line position scheme is preliminarily drawn up.Secondly,according to the relationship between the influencing factors of the line level,the evaluation hierarchy structure system is established based on the analytic hierarchy process.Then,according to the importance relationship between each element,combined with expert rating,a multi-level judgment matrix of line-position comparison is established,and the eigenvector of the matrix is calculated,and then the weight value of the index is calculated.Finally,the fuzzy evaluation matrix is listed according to the weight value,and the weighted method is used to calculate the total weight score(i.e.,the total score),and the scheme with the highest score is the recommended scheme.(2)Study on the cross-river road,bridge and tunnel comparison and selection solutionsIn the past,the choice of bridge and tunnel was often determined from the feasibility of the project or simply from the economic point of view of the project.However,with the development of manufacturing industry and technology,as well as the diversification of people’s needs for engineering environment,aesthetics and other aspects,the factors considered in the selection of bridge and tunnel are becoming more and more complex.This paper firstly introduces the bridge scheme and tunnel scheme of Jiangyin second river-crossing passage,then introduces the main factors that need to be considered in the comparison between the two schemes,and finally analyzes the application of entropy weight method in the selection of bridge-tunnel ratio.Firstly,a feasible bridge and tunnel scheme is preliminarily drawn up.Secondly,a number of typical evaluation indexes such as technology,function,economy and environment were selected,and the index summary table of the evaluation system was obtained by combining the expert scoring method,and the data were standardized.Then,the information entropy of the sub-index is calculated and the entropy weight of the sub-index is determined.Finally,the entropy weight of the sub-index is used to calculate the comprehensive weight(i.e.,the total score)of each bridge and tunnel scheme,and the scheme with the highest score is the recommended scheme.This article in view of the cross-river road route design two technical problems:Line position comparison,Bridge and tunnel comparison.Propose Evaluation matrix model,Entropy weight method to solve these two problems.This has important reference value for the design of cross-river road。It can improve design efficiency。...