Spatially varying ground motion effects on seismic response of adjacent structures considering soil-structure interaction

Alam, Md Iftekharul & Kim, Dookie (2014) Spatially varying ground motion effects on seismic response of adjacent structures considering soil-structure interaction. Advances in Structural Engineering, 17(1), pp. 131-142.

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Abstract

Spatial variation of seismic ground motions is caused by incoherence effect, wave passage, and local site conditions. This study focuses on the effects of spatial variation of earthquake ground motion on the responses of adjacent reinforced concrete (RC) frame structures. The adjacent buildings are modeled considering soil-structure interaction (SSI) so that the buildings can be interacted with each other under uniform and non-uniform ground motions. Three different site classes are used to model the soil layers of SSI system. Based on fast Fourier transformation (FFT), spatially correlated non-uniform ground motions are generated compatible with known power spectrum density function (PSDF) at different locations. Numerical analyses are carried out to investigate the displacement responses and the absolute maximum base shear forces of adjacent structures subjected to spatially varying ground motions. The results are presented in terms of related parameters affecting the structural response using three different types of soil site classes. The responses of adjacent structures have changed remarkably due to spatial variation of ground motions. The effect can be significant on rock site rather than clay site.

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ID Code: 78888
Item Type: Journal Article
Refereed: Yes
Keywords: adjacent buildings, spatial ground motions, seismic response, soil-structure interaction, power spectrum density function
DOI: 10.1260/1369-4332.17.1.131
ISSN: 1369-4332
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Earthquake Engineering (090504)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Multi-Science Publishing
Deposited On: 23 Nov 2014 23:05
Last Modified: 24 Nov 2014 23:49

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