Semi-active adaptive control of seismically excited 20-story nonlinear building

• Published in: Engineering structures Vol. 56; pp. 2107 - 2118
• Main Authors: Bitaraf, Maryam, Hurlebaus, Stefan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2013; Elsevier
• Subjects: Adaptive control; Adaptive Control Method; Adaptive control systems; Applied sciences; Buildings; Buildings. Public works; Earthquake dampers; Exact sciences and technology; Geotechnics; High rise building; Monitors; MR damper; Nonlinear behavior; Nonlinearity; Performance enhancement; Seismic phenomena; Semi-active control device; Stresses. Safety; Structural analysis. Stresses; Structure-soil interaction; Tall buildings; Types of buildings; MR damper; Semi-active control device; Nonlinear behavior; Adaptive Control Method; Performance evaluation; Earthquake engineering; Nonlinear analysis; Adaptive control; Magnetorheological fluid; Case study; Problem solving; Behavior; Acceleration; Active control; Damper; High rise building; Comparative study
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2013.08.031

•The SACM is used to control the response of a tall building with nonlinear behavior.•The SACM is modified in a way to be appropriate for nonlinear civil engineering systems.•The twenty-story building from the SAC project II is used as a case study.•The twenty-story building is equipped with MR dampers.•Results show that SACM is more successful than other methods. An adaptive controller has adjustable parameters and a mechanism for modifying them. It can continuously monitor its own performance in relation to a given condition and has a means of modifying its own parameters by a closed loop action to approach optimum performance. The effectiveness of using the Simple Adaptive Control Method (SACM) to enhance the performance of structures with linear behavior was previously studied. In this study, the SACM is used to control the response of a tall building with nonlinear behavior and equipped with magnetorheological (MR) dampers. The performance of SACM is compared with other control methods and results show that this method is successful to improve the structural performance of a nonlinear building subjected to earthquakes.