某隧道主体结构内力计算及配筋设计  

Structural Internal Force Calculation and Reinforcement Design of the Main Structure of a Tunnel

作　　者：孙建波 李登寿 史金录 刘渊 徐大桥 SUN Jianbo;LI Dengshou;SHI Jinlu;LIU Yuan;XU Daqiao(CITIC Construction Co.,Ltd.,Beijing 100027,China;China Central and South Municipal Engineering Design and Research Institute Co.,Ltd.,Wuhan 430000,China)

机构地区：[1]中信建设有限责任公司,北京100027 [2]中国市政工程中南设计研究总院有限公司,湖北武汉430000

出　　处：《河南科技》2024年第1期61-66,共6页Henan Science and Technology

摘　　要：【目的】为完成隧道衬砌结构设计,需要对隧道围岩压力和隧道主体结构内力进行计算。根据隧道受力特点进行合理的计算假定。【方法】基于国道321线,采用SAP84软件对最不利断面的不同工况进行设计计算和模型分析并进行验证。【结果】结果表明,此隧道主体结构在三种最不利断面的工况下,配筋内力计算结果和验证情况均符合规范要求。【结论】该项目配筋设计时在正常使用状态下的计算结果,结合承载能力极限状态下的计算结果进行验证,能够快速有效地确定最终配筋结果,为配筋提供了理论依据,为今后隧道衬砌结构设计提供参考。[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 reinforcement 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 results and provide a theoretical basis for the reinforcement and a reference for the design of tunnel lining structure in the future.

关 键 词：隧道结构设计 结构内力计算 SAP84 配筋设计 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]