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Optimization analysis of construction scheme for large-span highway tunnel under complex conditions

Pengfei Jiao, Zhang Xiao, Li Xinzhi, Jiang Bei, Liu Bohong, Zhang Haojie

Archives of Civil Engineering

2018

Vol. 64, nr 4/I

55--68

The construction process of the tunnel ground deformation regularity of surrounding rock, stability, deformation control of tunnel surface based on the requirements, combined with the characteristics of shallow tunnel with large-span. Used three-dimensional numerical simulation software, established a dynamic tunnel analysis program to simulate the construction process of center cross-diagram method and double sidewall drift method. Based on the stratum deformation, supporting force and analysis of plastic zone distribution, comparative analysis of engineering adaptability of different construction methods from the construction process and construction mechanics, get optimization tunnel construction scheme.