引汉济渭隧洞换拱施工安全影响的数值分析  

Numerical Analysis on Safety Influence of Hanjiang-weihe River Water Transfers Project Diversion Tunnel Arch Replacement Construction

作　　者：王建伟[1] WANG Jianwei(China Railway 18th Bureau Group Tunnel Engineering Co. , Ltd. , Chongqing 400700, China)

机构地区：[1]中铁十八局集团隧道工程有限公司,重庆400700

出　　处：《中国水能及电气化》2020年第7期55-60,共6页China Water Power & Electrification

摘　　要：由于传统方法具有单一性,导致换拱后的隧洞安全系数偏低。文章针对引汉济渭隧洞工程换拱,提出了全新的施工安全影响数值分析方法。通过计算换拱施工参数,有限元分析拱结构,根据材料破坏准则,确定挡墙动力学特性。实验结果表明:该方法与传统方法相比,隧洞换拱后的安全系数更高。The safety coefficient of the tunnel after arch replacement is low due to the unicity of the traditional method.A new method for numerical analysis of construction safety influence is proposed for Hanjiang-weihe River Water Transfers Project diversion tunnel arch replacement in the paper.The dynamic characteristics of the retaining wall are determined by calculating the construction parameters of arch replacement and analyzing the arch structure with finite element method according to the material failure criterion.The experimental results show that the safety coefficient of the tunnel is higher than that of the traditional method.

关 键 词：引汉济渭隧洞 换拱施工 安全影响指标 数值分析 

分 类 号：TV672.1[水利工程—水利水电工程]