Abstract
Seismic design method for underground structure is proposed taking note of the relative displacement between the ceiling and base slab as the deformation characteristics of the structure. The examination of the seismic performance is carried out by the comparison of the dynamic response deformation characteristics of the structure with the deformation characteristics associated with the damage mode of each member. The major characteristic of this method is that not only the seismic performace of each menber but also that of the structure is exami ned by the comparison between both deformation characteristics. This method was applied to evaluate the damage mechanism of Daikai station, Kousokunagata station and connecting tunnel between Daikai and Shinkaich station at KOBE Rapid Transit Railway which was seriously damaged by HYOGOKEN NANBU earthquake. It is found that this method is useful.
