The lateral loading tests of the tunnel lining model are carried out in the sand-box in order to evaluate the interaction between the deformation of tunnel lining and the pressure acting upon it.
Two types of lining model, steel and acryle pipes are used. The former has quite high stiffness and size of 200mm external diameter, 400mm width and 10mm thickness, and the later has flexible property with the same diameter and width of steel and 3mm thickness.
From the experiments, it is seen that the pressure directly acting upon the lining is changed according to the deformation of the lining itself. The pressure to be changed by the lining deformation, is evaluated by the analytical modd in which the ground is expressed by the elastic springs setted over around the lining.