Title

Recent Development in Structural Control Including Soil-Structure Interaction Effect

Abstract

Soil-structure interaction (SSI) has gained significant recognition of importance in the control of seismically excited structures in the past ten years. In this paper, recent developments of the SSI effect on the performance of passive, semi-active and active control strategy are summarized in general. It is followed by a short presentation on the seismic effectiveness of tuned mass dampers, variable stiffness devices and active control systems in reducing the maximum response of structures with the intent of comparing the SSI effect on various devices and control systems. Numerical studies on a 3- and a 12-story frame structure resting on a viscoelastic half space indicated that SSI tends to defeat the effectiveness of control systems. This defeat is primarily because the damping of a soil-structure system increases and the structure vibrates more like a rigid body as the soil material softens. Since nearly all devices made of smart materials either passively or actively respond to the structural deformation, their performance is likely to degrade for flexible-base structures.

Meeting Name

Smart Structures and Materials: Smart Systems for Bridges, Structures, and Highways (2000: Mar. 6-7, Newport Beach, CA)

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Damping; Earthquake Resistance; Stiffness; Structural Analysis; Vibration Control; Active Control; Structural Control; Tuned Mass Damper; Soil Structure Interactions

International Standard Serial Number (ISSN)

0277786X

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2000 SPIE--The International Society for Optical Engineering, All rights reserved.

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