| Numbers of tunnel constructions under unfavorable ground conditions have increased recently. Current tunnel structure itself cannot conform with the large deformation when the large force from ground occurs and acts on structure. The mechanical characteristics of the tunnel with the mechanism to assume to absorb large force and correspond to the deformation were examined in this study through model test and numerical analysis. Consequently, the existence of the absorption mechanism influences on the relation between force and deformation and the position and occurrence load of cracks in structure. The strain over the structure is also found to be alleviated. |
