Optimal Control of Single-Degree-of-Freedom Systems Dynamically Interacting with Elastic Soil

Ozuygur A. R., Gündüz A. N.

TEKNIK DERGI, vol.25, no.1, pp.6581-6600, 2014 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 1
  • Publication Date: 2014
  • Journal Name: TEKNIK DERGI
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.6581-6600
  • Istanbul Technical University Affiliated: Yes


In this paper, a numerical algorithm is proposed to analyze optimally controlled soil-structure interaction system. In the proposed algorithm, the control force is obtained first using a fixed-base system in time domain, and then it is converted to frequency domain by Fourier Transform to be used in the equations of soil-structure interaction system. The lateral displacement and rocking of foundation are obtained from the equations of soil-structure interaction system containing the control force, and then converted to time domain by Inverse Fourier Transform. Secondly, the control force is calculated again by using the combination of lateral acceleration of the system, foundation rocking and earthquake ground acceleration. In recent studies, optimal control of structures has been generally studied by using a fixed-base system rather than the system supported on flexible soil which is usually analyzed in frequency domain. In this study, a more realistic dynamically