Research And Development On Structure Design System Of Railway Tunnel

With the vigorous development of Chinese railway construction, and especially based on the overall construction of passenger dedicated railways these years, a great deal of railway tunnels are being built nowadays. Therefore, it is an inevitable direction that railway tunnels should be designed and built scientifically, and reasonably. The engineering analogy method is widely used in tunnel design at present, thus it has important significance to make statistical classification of existing tunnel data, which could provide support for engineering decision. Meanwhile, it could improve design reliability by testing support strength when using other support design method. As a result, the followings become important subjects in railway tunnel construction:how to manage the design and construction information of railway tunnels effectively; how to query the existing information conveniently; how to obtain similar tunnel data for reference; how to design a new tunnel scientifically.According to the study on great number of tunnel data, this paper concludes the most basic and important information of the railway tunnel, gets a systematic induction of main support design methods at home and abroad, and develops a structure design system of railway tunnel, by using rock characteristic curve for initial support calculation. The main achievements of the paper are as follows:(1) Get mastery for latest development of tunnel system, as well as main points of railway tunnel design. According to existing engineering and research data, develop the data base for railway tunnels and system for initial support design.(2) Build effective rearward data base, design simple and friendly interface, and realize the function of input, output, searching, modification and deleting.(3) Analyze 3D dynamical deformation properties of rocks by numerical simulation method, get systematic conclusion of the theory and methods of tunnel structure design, and choose suitable method for calculation inside system.(4) Calculate the safety factor of the initial tunnel support by using the system, and provide reasonable conference for the engineers, to assure the project finished. Test the reliability of the result calculated by the system and by numerical simulation method.