带仰拱隧道密井暗管的新设计方法

A New Design Method for Dense Wells and Underground Pipes in Railway Tunnels with Inverted Arch

目前,常见既有隧道病害主要表现为仰拱破损、翻浆冒泥、道床下沉等形式,如何利用有效的手段彻底解决现有病害是隧道整治的关键。分析了隧道增设检查井解决病害的方法、设计原理,结合工程实例利用有限元分析法对增设检查井解决隧道病害原理进行检验算,论证了结构的安全、施工的可行。

At present, there are many common diseases in the existing tunnels such as inverted vault damage, mud-pumping, road-bed subsidence and etc.. How to use effective means to solve these diseases is a key to the tunnel repair project. This paper analyzes the additional examining wells to treat diseases, including its method and design principles. Combined with engineering examples, this paper uses finite element analysis to check and calculate the effectiveness of the principles for these added examining wells in treating tunnel diseases, which has demonstrated the safety of the structure, and the feasibility of the construction. It has a reference value in tunnel disease treatment.