Research On Calculation Model And Method Of Ontology Engineering Cost For Newly-built Railway

The engineering cost of a railway project is an important consideration in the construction of a railway project.It has an important influence on the optimization design of the line,the design quality,and the direction of the plan.The railway body engineering is the most important part of the railway engineering.In the total engineering cost,the body engineering cost occupies most of the proportion,so the research on the railway body engineering cost is very meaningful.Moreover,my country’s railway network is spread all over the country,and there are large differences in the project costs of railway projects in different regions.In order to accurately and quickly calculate the engineering cost of the railway itself,realize the comparison and selection of different schemes,reduce the project construction risk and save working time,save the project investment,and make the route more scientific and reasonable.This article proposes a set of railways for different regions.Ontology engineering cost calculation model is of great significance to railway project construction.This article collects basic data of more than one hundred railways in my country,and first sorts out and counts the data.The research is carried out based on two types of data including the feasibility study pre-feasibility study report,the detailed data of the preliminary design data and the railway project profile data.First,research the detailed data of the feasibility study report,pre-feasibility study report,and preliminary design data,select representative railway projects in each region,and extract different information from the plan comparison and selection information in the design data and the comprehensive budget summary table.The project cost index of the railway itself in the region.And combined with the actual situation of the project and related literature analysis and research on the index laws of subgrade,bridge,and tunnel engineering.The following results are obtained: The cost index table of each main body project of the high-speed railway and the passenger and freight railroad in various regions is given;the law of the cost index of the main body project of the railway is analyzed.Secondly,establish a calculation model for the project cost of each railway body,and perform statistics on the general data of railway projects in each region.Based on these data,use the fitting software based on the least square method to return the model parameters of each region,and obtain each body project in different regions.Cost calculation model,based on this model,substituting the extracted cost indicators of each area ontology project into each ontology cost calculation model to obtain the final railway ontology cost model for each area.Finally,select the Xiyan High-speed Railway is as the research object,introduce the project overview and related data of the Xiyan High-speed Railway,and then the relevant data of the Xiyan High-speed Railway is brought into the railway body engineering cost model to obtain the calculation result of the railway body engineering cost.The calculation result of the engineering cost is compared with the actual engineering cost.The result proves that the error between the project cost calculated by the railway project cost calculation model established in this thesis and the actual project cost of the Xiyan High-speed Railway is within 5%,which verifies the correctness of the project cost calculation model of the railway project.