Effect of Semiactive Control on Wind and Seismic Responses of High-Rise Building Supported on Triple Friction Pendulums
Publication: Journal of Performance of Constructed Facilities
Volume 34, Issue 3
Abstract
A triple friction pendulum bearing (TFPB) as an isolator has been considered more competitive than conventional bearings such as rubber bearings or single friction pendulum bearings due to its versatile behaviors under different levels of earthquakes. However, as the seismic responses are reduced, the wind-induced responses of the building may increase simultaneously, and this phenomenon is more common for isolated high-rise buildings compared with midrise and low-rise structures. In this paper, an analytical model for an isolated high-rise building with TFPB and a magnetorheological (MR) damper is proposed. An optimal fuzzy logic controller (FLC) is further proposed based on the multiobjective method, so as to reduce the wind responses without diminishing the base-isolation effect. To evaluate the proposed controller, seismic and wind-induced responses of the building controlled by the optimal FLC are compared with those of the building using the human-designed FLC and the building without control. According to the numerical analyses, it is found that although wind-induced responses can be reduced by both controllers, the human-designed FLC may reduce the wind-induced responses at the expense of increased seismic responses (increased by 12% in average of maximum absolute accelerations), whereas the optimal FLC can reduce both the wind and seismic responses (the reduction of maximum absolute accelerations is no less than 48% and 9%, respectively).
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Data Availability Statement
The data in Figs. 8, 9, and 12 are available from the corresponding author by request.
Acknowledgments
Support from the Natural Science Foundation of China under Grant No. 51678147 is gratefully acknowledged.
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©2020 American Society of Civil Engineers.
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Received: Jul 14, 2019
Accepted: Nov 6, 2019
Published online: Mar 24, 2020
Published in print: Jun 1, 2020
Discussion open until: Aug 24, 2020
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