Evaluation of numerical procedures to determine seismic response of structures under influence of soil-structure interaction

Tabatabaiefar, Hamid Reza, Fatahi, Behzad, Ghabraie, Kazem and Zhou, Wan-Huan 2015, Evaluation of numerical procedures to determine seismic response of structures under influence of soil-structure interaction, Structural engineering and mechanics, vol. 56, no. 1, pp. 27-47, doi: 10.12989/sem.2015.56.1.027.

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Title Evaluation of numerical procedures to determine seismic response of structures under influence of soil-structure interaction
Author(s) Tabatabaiefar, Hamid Reza
Fatahi, Behzad
Ghabraie, KazemORCID iD for Ghabraie, Kazem orcid.org/0000-0002-1043-3403
Zhou, Wan-Huan
Journal name Structural engineering and mechanics
Volume number 56
Issue number 1
Start page 27
End page 47
Total pages 21
Publisher Techno-Press
Place of publication Taejon, Korea
Publication date 2015
ISSN 1225-4568
Keyword(s) soil-structure interaction
shaking table test
inelastic seismic response
equivalent linear method
fully nonlinear method
inelastic design procedure
Summary In this study, the accuracy and reliability of fully nonlinear method against equivalent linear method for dynamic analysis of soil-structure interaction is investigated comparing the predicted results of both numerical procedures with the results of experimental shaking table tests. An enhanced numerical soil-structure model has been developed which treats the behaviour of the soil and the structure with equal rigour. The soil-structural model comprises a 15 storey structural model resting on a soft soil inside a laminar soil container. The structural model was analysed under three different conditions: (i) fixed base model performing conventional time history dynamic analysis, (ii) flexible base model (considering full soil-structure interaction) conducting equivalent linear dynamic analysis, and (iii) flexible base model performing fully nonlinear dynamic analysis. The results of the above mentioned three cases in terms of lateral storey deflections and inter-storey drifts are determined and compared with the experimental results of shaking table tests. Comparing the experimental results with the numerical analysis predictions, it is noted that equivalent linear method of dynamic analysis underestimates the inelastic seismic response of mid-rise moment resisting building frames resting on soft soils in comparison to the fully nonlinear dynamic analysis method. Thus, inelastic design procedure, using equivalent linear method, cannot adequately guarantee the structural safety for mid-rise building frames resting on soft soils. However, results obtained from the fully nonlinear method of analysis fit the experimental results reasonably well. Therefore, this method is recommended to be used by practicing engineers.
Language eng
DOI 10.12989/sem.2015.56.1.027
Field of Research 090501 Civil Geotechnical Engineering
090504 Earthquake Engineering
090506 Structural Engineering
010301 Numerical Analysis
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Techno-Press
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084203

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