Fig. 6(a) shows the pseudo-velocity response spectrum
of the records observed during this event. Additionally,
response spectrums for the severe ground motion, including the ground motions of the 1995 Hyogoken
Nanbu Earthquake, are displayed in the figure. It can be
understood that the seismic action to structures in the
IWTH25 records, with an atural period of 0.5–2 s, is rather
small compared to that in the existing records. On the
other hand, these is micaction to structures in the IWTH25
records, with a shorter natural period tan0.5s,is larger
than that the 1995 Hyogoken Nanbu Earthquake.
These spectral characteristics are almost the same easthose
in the IWTH26 records.
Fig. 6(a) shows the pseudo-velocity response spectrumof the records observed during this event. Additionally,response spectrums for the severe ground motion, including the ground motions of the 1995 HyogokenNanbu Earthquake, are displayed in the figure. It can beunderstood that the seismic action to structures in theIWTH25 records, with an atural period of 0.5–2 s, is rathersmall compared to that in the existing records. On theother hand, these is micaction to structures in the IWTH25records, with a shorter natural period tan0.5s,is largerthan that the 1995 Hyogoken Nanbu Earthquake.These spectral characteristics are almost the same easthosein the IWTH26 records.
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