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EFFECTIVE OPTIMAL STRUCTURAL CONTROL OF SOIL-STRUCTURE INTERACTION SYSTEMS

✍ Scribed by SMITH, H. ALLISON; WU, WEN-HWA

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
411 KB
Volume
26
Category
Article
ISSN
0098-8847

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✦ Synopsis

A methodology is developed in this paper to include soil-structure interaction effects in optimal structural control, General Multi-Degree-Of-Freedom (MDOF) structural models are considered. The SSI transfer functions for ground motion and control force in the physical space are presented first, followed by a methodology for using system identification techniques to find an equivalent fixed-base model of an MDOF SSI system. An iterative technique is applied to combine these methods for the determination of optimal control gains. The control effectiveness of considering soil-structure interaction is investigated for the controlled SSI system. It is found that the control algorithm considering SSI effects is more effective than the corresponding control algorithm assuming a fixed-base system model. In addition, the advantage of applying this methodology is observed to be more prominent in the cases where the SSI effects are more significant.

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