Effect of soil amplification on the response of base-isolated buildings under near-fault earthquakes


SARĞIN S., GAZİ H., ALHAN C., ÖZTOPRAK S.

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, CSEE 2017, Barcelona, İspanya, 2 - 04 Nisan 2017, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Doi Numarası: 10.11159/icsenm17.108
  • Basıldığı Şehir: Barcelona
  • Basıldığı Ülke: İspanya
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

© Avestia Publishing, 2017.Near-fault earthquakes (i.e. strong ground motion records obtained in near-fault zones) are known to challenge base-isolated buildings with their capacity to create large isolation system displacements. Such earthquake records typically contain velocity pulses with long periods and thus threaten base-isolated buildings which also have long fundamental periods that may coincide with the pulse periods of the near-fault earthquakes. In case base-isolated buildings are located in near-fault regions where soil amplification may be observed, it may worsen the situation further. In order to investigate the effect of soil amplification on the response of base-isolated buildings which are located in near-fault zones, a synthetic pulse representing near-fault earthquake records is created and a soil amplification analysis is conducted on this record for a representative benchmark soft soil. A benchmark base-isolated building is then subjected to the original and the amplified record. Finally, the peak values of the seismic response parameters such as the isolation system displacement, floor accelerations, and story shears are compared.