Research On Digital Evaluation Platform For Ecological Line Selection Schemes

In recent years,in order to promote the development of tourism resources and economic development in mountain forest areas,the construction of mountain rail transit projects has begun to rise,the rack rail has begun to be applied in mountain tourism among all types of mountain rail transit due to its excellent climbing ability,excellent transportation flexibility and strong applicability.The ecological environment in mountainous forest areas is generally fragile and sensitive.And it requires line engineers to take full account of the ecological environment along the line when choosing the line of the rock rail.The traditional twodimensional graphic design mode does not allow line engineers to have an intuitive perception of the ecological environment along the line.And the development of virtual environment technology makes it possible to construct a three-dimensional virtual environment of the area along the line of the rack rail.In the virtual environment,line designers can not only select the line alignment but also pay attention to the impact of the line on the ecological environment in real time.Meanwhile,with the help of the mature computer technology,the digital evaluation platform for line selection schemes is designed to provide diversiform evaluation methods for line engineers and to improve the evaluation efficiency of line schemes.This paper will analyze and study the use of virtual environment for the rack rail ecological line selection and construct the digital evaluation platform for line selection schemes to evaluate and compare the rock rail line schemes.The main research contents and results of this paper are as follows:(1)The classification and coding method of the primitive models of the rack rail structures is analyzed,and the construction of the primitive models is accomplished.The threedimensional primitive model library database management of the rack rail structures required for building the virtual environment is constructed.(2)The line multi-information database management system is designed by using PostgreSQL database and C++ programming language to operate and manage the design data,design results and three-dimensional primitive models.(3)The feasibility of constructing three-dimensional virtual environment of the rack rail is explored on the basis of the aspects of hardware and software composition,the modeling method and principle of railway digital line selection system.And the feasibility of constructing the digital evaluation platform for line selection schemes is analyzed and studied from the aspects of necessity,technical route and functional modules.(4)The virtual environment of a traffic project is constructed by using the railway digital line selection system,and the virtual environment is used for ecological line selection.Meanwhile,multiple line schemes are evaluated and compared by using the digital evaluation platform for line selection schemes.