STATIC LOADING TESTS OF CUT AND COVER TUNNEL TO GRASP A RELATIONSHIP BETWEEN A PROCESS OF FAILURE AND STRENGTH

Abstract

 In the case of the collapse of the Daikai Station of the Kobe Rapid Transit Railway when the 1995 Kobe Earthquake occurred, it was clear that a shear failure of the center pillars of a cut and cover tunnel was partly the cause of the collapse of the whole tunnel. However, it has not been clarified how severe damage to a side wall influenced the degree of this collapse. In this research, we conducted static loading tests using reinforced concrete cut and cover tunnel models to grasp a relationship between a process of failure and structural strength when a member of the tunnel is damaged by shear failure.