Share Email Print
cover

Proceedings Paper

Seismic response control of a complex structure using semi-active friction dampers
Author(s): Chi-Lun Ng; You-Lin Xu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Mitigating seismic responses of adjacent buildings by using control devices linked the two buildings has been recognized as a feasible alternative control scheme in past decade. A numbers of research studies have been undertaken in revealing and comparing the control capability among passive, active and semi-active control strategies employed in the coupled building system. The general interest and intention for the coupling control approach are mainly placed on the adjacent high-rise structures, and the LQ control algorithm relying on feedback with multiple measurement points is also the major design preference. This paper will focus on evaluating the effectiveness of controllable friction dampers as coupling devices that are implemented with semi-active control strategy based on local response feedback for a coupled podium structure and medium-rise building system. The effect of the height, mass and stiffness of two semi-actively controlled structures is one of the investigations. A comparison on control performance by a proposed semi-active control strategy with passive and clipped optimal control strategy is also presented. It is shown that control strategy with local response feedback can provide increased control performance over the passive strategy, and it is also of similar efficiency compared to the clipped optimal control strategy.

Paper Details

Date Published: 29 July 2004
PDF: 12 pages
Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); doi: 10.1117/12.540901
Show Author Affiliations
Chi-Lun Ng, Hong Kong Polytechnic Univ. (Hong Kong China)
You-Lin Xu, Hong Kong Polytechnic Univ. (Hong Kong China)


Published in SPIE Proceedings Vol. 5391:
Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Shih-Chi Liu, Editor(s)

© SPIE. Terms of Use
Back to Top