Seismic response control of building structures under pulse-type ground motions by active vibration controller

authored by: Said Elias, Salah Djerouni, Dario De Domenico, Mahdi Abdeddaim, Mohamed Hechmi El Ouni
Abstract: Active vibration control systems are commonly reported to be the most robust and effective method for vibration control of structures. However, the type of ground motions and the type of analysis may greatly influence their performances. This study investigates the seismic response of building with and without an active controller under pulse-type ground motions. A 20-story non-linear steel benchmark building is considered. Linear and non-linear analysis is conducted to check the effectiveness of the active control system. Active control with a linear quadratic Gaussian (LQG) control algorithm is applied to the benchmark building for seismic control purposes. Initially, some ground motions are selected following earlier studies from the literature concerning the benchmark building. It is found that the LQG control algorithm is quite effective under the considered earthquakes, and the analysis type does not affect the effectiveness of the controller. Thereafter, a set of additional 69 pulse-type ground motions are considered to check the performance of the LQG control algorithm and to find the suitability of linear analysis. It is noticed that under such pulse-type ground motion, the LQG control algorithm is not much effective if the non-linear behavior of the structure is incorporated in the seismic analysis, whereas in case of linear analysis, the LQG control algorithm is still effective. It is concluded that neglecting the non-linear behavior may lead to unconservative estimates of the seismic response when performing seismic analysis and designing structures equipped with active vibration control systems.
External Organisation(s): University of Twente
Type: Article
Journal: Journal of Low Frequency Noise, Vibration and Active Control
Volume: 42
Pages: 345-367
No. of pages: 23
Publication date: 03.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Mechanics of Materials, Mechanical Engineering, Geophysics, Building and Construction, Acoustics and Ultrasonics, Civil and Structural Engineering
Electronic version(s): https://doi.org/10.1177/14613484221130192 (Access: Open)