Semi-rigid Shell Bolting Spray The Mechanical Properties Of The Research And Application

There is a lack of mature calculation theory on the underground latticed shell as it is by way of space reinforced concrete hull structure, the mechanics characteristic and the bearying capacity of the half rigidity reinforced shell bolting and shotcrete support was studied on the basis of the analysis for the mechanics principle of shell structures. The structure's internal force was analyzed and calculated and the formulas of it's internal force, displacement, stress was deduced according to the.general mechanics theory of the ringent cylindrical shell.The model experiment was done by relying on the industrial test and the distortion, ruinate shape, developmental rule of the supporting system was examined while the stress and strain distributing rule and also the ultimate load were obtained. The calculative model of finite element numerical simulation with computer was established on base of combing the theory analysis with the experimental result. As the result of the numerical calculation the study on the structure was supplementary verified ulteriorly. The result of different calculation methods was compared and the otherness was making for the optimizing of the design project. At last, the conclusion of numerical calculations proved that ANSYS program is reasonable and creditable. With combination by typical engineering, it was compared to other supporting method that used commonly in soft rock tunnels, the technique, economic contrast of the typical tunnel with shell support was completed and the social benefit was evaluated. .It was indicated by the integrate analyzing that the shell bolting and shotcrete support structure had advanced technical features and could be adapted to supporting soft rocks. The fruit of this paper may lay a foundation for the analysis and calculation, and offer a gist for the structure in a way.