公路隧道箱型预制仰拱变形破坏的模型试验研究

王迎超,徐杭,郝英,周鑫,刘泾堂,李元海

Model test research on deformation and failure of box-shaped prefabricated inverted arch structure of highway tunnel

Yingchao WANG,Hang XU,Ying HAO,Xin ZHOU,Jingtang LIU,Yuanhai LI

表 1 围岩和支护结构的力学参数

Tab.1 Mechanical parameters of surrounding rock and supporting structure

类型 γ/(kN·m−3) E/GPa μ C/MPa Φ/(°) 围岩 20 0.3 0.3 2 27 初支 22 29.4 0.2 — 35 二衬 24 31.4 0.2 — 35 仰拱 25 34.0 0.2 — 35