Research On The Deformation Monitoring Of Supporting System And Reverse Analysis For Highway Tunnel

The construction of Highway tunnel is the important links to achieve rapid economic development in our country. However,during the tunnel project developed in full swing, many question have come into in the project. This article introduces a more comprehensive monitoring measurement and the role of practical methods, and analyses the displacement of the supporting structure and internal forces, and judges the stability of supporting structure. At the same time, introduces systematically the history and current situation of displacement reverse analysis, describes the displacement reverse analysis theory of the elastic-plastic problem, and based on the actual project, this paper presents displacement reverse analysis in the application of the tunnel project.The HY tunnel works of YX highway construction - in-progress based on, first of all, this paper summary the on-site monitoring methods and the attentions, and mapping curve through the measured data, classify the type of the curves, while the stability of the surrounding rock for analysis.Secondly, briefly introduce the use and operation processes of ANSYS in the tunnel project for displacement reverse analysis, and base on rock and Support of the kNown parameters and the measured datas, through the use of ANSYS APDL parameters of the language, and use optimum design method to reverse analysis for surrounding rock. Integration of the various steps of the monitoring datas, excluding abnormal monitoring datas, access parameters through multiple reverse analysis, the parameters from the results of the average of reverse analysis.Finally, establishing emergency parking zone three-dimensional model with ANSYS, the rock's elastic modulus E₁ and the rock reinforcement ring elastic modulus E₂ and Poisson's ratioμas parameters, testing the results of reverse analysis with normal computation for reverse analysis. Then,using these parameters to start normal analysis, each reverse analysis are based on the corresponding construction step, and predicting the displacement of other construction-step, and comparing the measured displacements. If the results meet the requirements, we can get on normal analysis with the parameters, forecast displacement and stress of further follow-up, amend design and guide construction. In this paper, the ultimate inversion parameters that are consistent with the analysis of the results of the follow-up step of the measured displacement, the reverse analysis model and displacement reverse analysis method proved the reasonable., the analysis results of this paper are good reference value to follow-up projects and similar projects.