Seismic behavior of the shallow clayey basins subjected to obliquely incident wave


Khanbabazadeh H., İyisan R., Özaslan B.

GEOMECHANICS AND ENGINEERING, cilt.31, sa.2, ss.183-195, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.12989/gae.2022.31.2.183
  • Dergi Adı: GEOMECHANICS AND ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), Compendex
  • Sayfa Sayıları: ss.183-195
  • Anahtar Kelimeler: basin edge effect, dynamic behavior, incident angle, numerical modeling, site effects, SITE RESPONSE ANALYSIS, GROUND-MOTION, 2D BEHAVIOR, SOIL, AMPLIFICATION, VALLEY, EDGE, 1D, DAMAGE, MICROZONATION
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Under the effects of the near-field earthquakes, the incident angle of the incoming wave could be different. In this study, the influences of some parameters such as incident angle, basin edge, peak ground acceleration level of the bedrock motion as well as different clay types with different consistency on the amplification behavior of the shallow basins are investigated. To attain this goal, the numerical analyses of the basins filled with three different clay types are performed using a fully nonlinear method. The two dimensional models of the basins are subjected to a set of strong ground motions with different peak ground acceleration levels and three different incident angles of 30., 45. and 90. with respect to the horizontal axes. The results show the dominant effect of the obliquely subjected waves at most cases. The higher effect of the 45. incident angle on the basin response was concluded. In the other part of this study, the spectral amplification curves of the surface points were compared. It was seen that the maximum spectral amplification of different surface points occurs at different periods. Also, it is affected by the increase in the peak acceleration level of the incoming motions.