Abstract
The objective of this paper is to indicate the locality of the damage area with respect to centercolumn and to make clear the damage mechanism based on the difference damage between Daikai subway station and Kosokunagata subway station by use of the two step analysis proposed by authors. It is found that the damage degree of center column depends on the location of the subway station. The reason why the damage at Kosokunagata station is less than that at Daikai station is found that the shear deformation at Kousokunagata station is less than that at Daikai station because the stiffness of ground around Kousokunagata station is larger than that around Daikai station.
