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ARPN Journal of Science and Technology >> Volume 7, Issue 2, November 2017

ARPN Journal of Science and Technology


Structural Control of Benchmark Buildings Equipped with Variable Stiffness Devices and Viscous Fluid Dampers

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Author Angeli Doliente Cabaltica, Pham Nhan Hoa, Chu Quoc Thang
ISSN 2225-7217
On Pages 295-304
Volume No. 4
Issue No. 5
Issue Date June 01, 2014
Publishing Date June 01, 2014
Keywords Benchmark problems, Structural Control, Semi-active control, Hybrid control, Dynamics of Structures



Abstract

This paper presents benchmark structural controlled buildings for seismically excited nonlinear buildings. These buildings focus on three typical steel structures, 3-, 9- and 20-story buildings designed for the SAC project for Los Angeles, California. The goal of this study is to assess the efficiency of a model building configured with a semi-active controlled stiffness devices (S-CSD) and enhanced by passive viscous fluid dampers (P-VFD). Evaluation criteria, control constraints, and algorithms of variable stiffness devices (including Riccati Optimal Active Control Algorithm - ROAC, Pole Placement Algorithm, Instantaneous Control with Displacement and Velocity Feedback - ICDVF, and Instantaneous Optimal Active Closed-Loop Control Algorithm - IOAC) are presented in this paper for design problems. Control strategies in order to reduce the seismic response of the buildings may be either passive, semi-active, or a combination thereof (hybrid). The problems presented in this paper and the paperís problems fit into the category of hybrid control. A simulation program has been built up (with the help of MATLAB) and made available to facilitate comparison of the efficiency and merits of the various control strategies. The structural control theory is applied to the benchmark problems to illustrate some of the design challenges in numerical samples.


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