抄録
Correlatively selecting a 18-storied steel-reinforced concrete building in Sendai City and "Miyagiken Oki Earthquake", June 12, 1978, the paper describes the results of the comparative study made for the elastic plastic seismic analysis results obtained on the basis of the strong erathquake motions recorded on the building and for the actually measured values. Concurrently, transitional changes of pre- and post-earthquake natural period of the building are introduced.
