Study on Relationship between Internal Force in Lining Structures of Shallow Tunnel and Span

Firstly,three calculation methods of support pressure of shallow tunnel are put forward.The varying range of support pressure with the span of shallow tunnel is analyzed with actual test calculation results of the three methods, and the optimum situation is obtained.Using finite element simulation analysis,the relationship between lining structure and span is obtained.Finally,the linearity between bending moment,shear and Axial force of lining structure is studied.