| In order to make full use of the existing railway survey and design case data,further improve the railway engineering database management system,improve the utilization rate of knowledge and experience and design efficiency,and reduce the cost.Therefore,it is of great research significance to establish an information management system for railway survey and design cases,and to quickly and effectively reference and utilize the data of existing railway survey and design cases.Starting from the actual railway design process,this paper adopts case-based reasoning theoretical analysis,database technology and related system development tools to carry out research on the construction of case database of railway investigation and design and information management system,and the main work and conclusions are as follows:(1)Aimed at the necessity and efficiency of the railway survey and design case information management,based on the case-based reasoning theory and its working principle,the processing model which is suitable for the railway survey design problems has been built,and it is concluded that the representation accuracy of railway survey and design cases’ characteristics will significantly influence the use efficiency of railway survey and design case data.(2)According to the railway survey design problem solving model,the railway survey design case is divided into "railway line design achievements","bridge culvert design achievements","the roadbed design achievements","yard design achievements","the tunnel design achievements" and "mutual information" six objects.Using the framework representation to represent different objects,and on this basis,Oracle database and related tools are used to build the railway survey design case database.(3)Analyzing the railway survey design case system and module structure of the information management system,designing the railway survey design case information management system of the login screen,main interface,case management interface and its operation interface.The railway survey design case database and man-machine interactive function module are connected,which have realized the establishment of the railway survey design case information management system.Research contents of this paper can be used in railway design,as well as in highway and other civil engineering design fields with similar characteristics.This paper has 40 pictures,1 tables,63 references. |