Structural Internal Force Calculation and Reinforcement Design of the Main Structure of a Tunnel
[Purposes]To complete the design of tunnel lining structure,it is necessary to calculate the pressure of tunnel surrounding rock and the internal force of the main structure of the tunnel.Reasonable calculation assumptions should be made based on the stress characteristics of the tunnel.[Methods]Based on the national highway 321,this paper used SAP84 software to conduct design calculation,model analysis,and results verification in three different working conditions of the most unfavorable section.[Findings]The results indicate that the calculation results and verification results of the reinforcement internal force of the main structure of this tunnel meet the requirements of the specifications under the three most unfavorable cross-sectional conditions.[Conclusions]The calculation results of the rein-forcement design of the project in the normal use state are verified by the calculation results of the bearing capacity limit state,which can quickly and effectively determine the final reinforcement re-sults and provide a theoretical basis for the reinforcement and a reference for the design of tunnel lin-ing structure in the future.
tunnel structure designstructural internal force calculationSAP84reinforcement design
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万方数据
