公路隧道初期支护变形特性分析

Analysis on Deformation Characteristics of Initial Support of Highway Tunnel

为研究公路隧道开挖初期支护阶段的变形特性,论文以云南宁永高速公路哨坪隧道为工程背景,采用有限元计算软件Midas GTS对哨坪隧道初期支护变形段进行数值模拟,并结合隧道监控量测数据,分析其变形规律,提出初期支护变形段处治方案并评价其支护效果。

In order to study the deformation characteristics of the initial support stage of highway tunnel excavation,taking Shaoping Tunnel of Ningyong Expressway in Yunnan Province as the engineering background,the finite element calculation software Midas GTS is used to simulate the initial support deformation section of Shaoping tunnel,and combined with the tunnel monitoring and measurement data,its deformation law is analyzed.The treatment scheme of deformation section of initial support is put forward and its supporting effect is evaluated.