Model test study on sectional form of highway tunnel lining

The behaviours of three different forms of lining section in highway tunnels were studied under different initial stresses(i.e.,single-center circle,three-center sharp circle,three-center tabular circle).Through the model tests the influences of the initial stresses and forms of lining section on performances of lining were analyzed,and a rational form of lining sectional for highway tunnels was presented.