Significance of bedrock depth in dynamic soil-structure interaction analysis for moment resisting frames

Behzad Fatahi, S. Hamid Reza Tabatabaifar, Aslan S. Hokmabadi, Bijan Samali

Research output: Chapter in Book / Conference PaperConference Paperpeer-review

Abstract

![CDATA[In this study, a fifteen storey moment resisting building frame, resting on a shallow foundation, is selected in conjunction with two clayey soils with the shear wave velocities less than 600m/s, representing soil classes De and Ee, according to AS 1170.4. Different bedrock depths including 10m, 20m, and 30 m are employed in the numerical modelling using finite difference software FLAC 2D. Fully nonlinear dynamic analysis under the influence of different earthquake records is conducted, and the results of the three different cases are compared and discussed. The results indicate that the dynamic properties of the subsoil such as shear wave velocity as well as bedrock depth play significant roles in seismic response of the building frames under the influence of soil-structure interaction. As the bedrock depth increases, lateral deflections and inter-storey drifts of the structures increase. These effects can change the performance level of structures from life safe to near collapse or total collapse. Therefore, the conventional design procedure excluding SSI is not adequate enough to guarantee the structural safety for the building frames resting on soft soil deposits.]]
Original languageEnglish
Title of host publicationProceedings of the 2nd International Conference on Performance-Based Design in Earthquake Geotechnical Engineering, Taormina, Italy, 28-30 May, 2012
PublisherAssociazione Geotecnica Italiana
Pages1396-1406
Number of pages11
ISBN (Print)9788855531788
Publication statusPublished - 2012
EventInternational Conference on Performance-Based Design in Earthquake Geotechnical Engineering -
Duration: 28 May 2012 → …

Conference

ConferenceInternational Conference on Performance-Based Design in Earthquake Geotechnical Engineering
Period28/05/12 → …

Keywords

  • soil-structure interaction
  • shields (geology)

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