| 英文摘要 |
This study aims to compile information about the arrival times of P-waves and S-waves, peak occurrence times of ground motion, and structural responses for the ground motion records observed in Taiwan. From these, we evaluate the percentages of the vertical peak ground motions and structural vertical peak responses that occur in P-wave and S-wave windows. We observe that most vertical ground motions and structural vertical peak responses occur in S-wave windows, especially the vertical peak responses of long-period structures. Given the nonlinear hysteretic behavior of soil under large shear strain induced by S-waves, this observation provides a physical basis for the observed nonlinear site effect of vertical ground motion in Taiwan. |
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