| Hydraulic pressure circular tunnel lining,except the mechanism complex interactionsInteraction between surrounding rock and lining, part load of the lining are difficult todetermine accurately, such as loose rock and deformation pressure, through the theory ofliterature and engineering practice of information collection, analysis, and the analysis of alarge number of calculation, a profound analysis of hydraulic circular pressure tunnelstructure analysis method, the main results obtained are as follows.（1）Systematically or derived elastic mechanics method, formula method and Harzamethod, the calculation results between and through the analysis of elastic mechanics method,the standard formula method and Harza method and finite element method are diversity andadaptability, putting forward the critical criterion, when the tunnel concrete lining aftercracking, elastic mechanics method has not to adapt, and should adopt the formula methodand Harza method, elastic-plastic or reinforced concrete finite element method.（2）Through the study of circular tunnel concrete lining cracking and force transfermechanism, the establishing orthotropic model of circular tunnel concrete lining, and theresults were compared with the standard formula, based on elastic modulus reduction method,putting forwardCalculation method of crack damage lining.（3） Through the numerical simulation analysis of tunnel excavation constructionmechanical process, systematically demonstrates the effect of loose rock pressure anddeformation pressure act on the lining structure, proposed circular pressure tunnel by sprayanchor, if the rock is stable, can not consider the effect of the loose surrounding rock pressureon lining bearing capacity; the timely implementation of lining, It is conducive to the resistingcrack and restricting crack of the high pressure circular tunnel lining. |
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