不同仰拱深度的公路黄土隧道仰拱受力特性分析  

Invert Stress Characteristics of Highway Loess Tunnel with Different Invert Depths

作　　者：任剑 赵雪锋 REN Jian;ZHAO Xuefeng(Lüliang North Expressway Management Co.,Ltd.,Lüliang,Shanxi 033000,China;Shanxi Transportation Technology Research&Development Co.,Ltd.,Taiyuan,Shanxi 030032,China)

机构地区：[1]吕梁北高速公路管理有限公司,山西吕梁033000 [2]山西省交通科技研发有限公司,山西太原030032

出　　处：《山西交通科技》2024年第1期80-84,共5页Shanxi Science & Technology of Transportation

摘　　要：仰拱是隧道衬砌结构的重要组成部分,不同仰拱深度设计很大程度上直接影响衬砌结构的承载性能、稳定性和耐久性。合理设计公路黄土隧道仰拱结构不仅可以减少衬砌结构病害的发生,而且可以提升衬砌结构的耐久性,延长其使用寿命。通过有限差分软件建立不同仰拱深度的公路黄土隧道三维分析模型,研究不同仰拱深度的两车道公路黄土隧道仰拱结构的受力特性,相关研究成果对科学设计公路黄土隧道的仰拱深度具有重要的技术指导意义。The invert is a vital composition of the tunnel lining structure,and its different depth design greatly affects the bearing capacity,stability,and durability of the lining structure.The rational design of the invert structure for highway loess tunnels can not only reduce the diseases of the lining structure but also improve the durability of the lining structure and prolong the service life.This paper established 3D analysis models for the highway loess tunnels with different invert depths by the finite difference software to study the invert stress characteristics of two-lane highway loess tunnels.The research results are of great technical guiding significance for scientifically designing the invert depth of highway loess tunnels.

关 键 词：黄土公路隧道 仰拱结构 仰拱深度 受力特性 数值分析 

分 类 号：U451.4[建筑科学—桥梁与隧道工程]