000009402 001__ 9402
000009402 005__ 20141205150202.0
000009402 04107 $$aeng
000009402 046__ $$k2008-10-12
000009402 100__ $$aAmini, Fereidoon
000009402 24500 $$aNew Evaluation of Soil-Structure Interaction Effects on Optimal Control of Structures

000009402 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009402 260__ $$b
000009402 506__ $$arestricted
000009402 520__ $$2eng$$aA methodology is developed in this paper to include soil-foundation-structure interaction (SFSI) effects in optimal control algorithm LQG. Analysis of a SFSI system is usually formulated in the frequency domain, whereas the optimal control algorithm LQG in the time domain, hence using an equivalent fixed-base model of structure considering SFSI effects represents an effective approach. A system identification technique is applied to find an equivalent fixed-base system. This equivalent model is applied to combine for the determination of optimal control gain. In this study, two illustrative examples of a five-storey building resting on and in elastic half-space are used to investigate the effectiveness of the developed control algorithm LQG. It is shown that the LQG controller considering SFSI effects is more effective in suppressing the structural response in both embedded and surface footing, but requires more control force when foundation is shallow at surface ground. It is shown that the applied system identification in this study is useful for other analyses of structure considering SFSI effects.

000009402 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009402 653__ $$aSFSI,LQG controller, system identification

000009402 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009402 720__ $$aAmini, Fereidoon$$iRazeghi, Hamid Reza$$iShadlou, Masoud
000009402 8560_ $$ffischerc@itam.cas.cz
000009402 8564_ $$s163408$$uhttps://invenio.itam.cas.cz/record/9402/files/05-01-0415.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0415.
000009402 962__ $$r9324
000009402 980__ $$aPAPER