Abstract
The lateral loading model tests of the tunnel lining are carried out in the sand-box in order to evaluate the interaction between the deformation of tunnel lining and the earth pressure acting upon it. Two models of the lining, steel or acryle pipe is used and two types of the test are performed. The one is the case that the active earth pressure is produced in the ground and the other is the passive earth pressure.
From the test, it is confirmed that the magnitude of the earth pressure directly acting upon the lining is changed according to the deformation of the lining itself. The pressure is evaluated by the analytical model in which the ground is the elastic springs setted over around the lining. Consequently, the interaction between the ground and tunnel lining can be explained by the introducing of the active ground spring constant and the passive one in response to the working realm, respectively.
