Nonlinear Response Prediction of a High-Rise Steel Structure Using Extended Kalman Filter

Accurate prediction of the nonlinear seismic response of tall buildings is critical for ensuring structural safety and optimizing design under strong earthquake events. This study investigates the nonlinear response of a ۵۱-story steel high-rise structure using an Extended Kalman Filter (EKF) as an advanced estimation tool for nonlinear behavior prediction. The building was designed in accordance with the Iranian National Building Regulations and Standard ۲۸۰۰ for seismic design, and all structural sections were checked for compliance with these codes. Time history analyses were conducted using six representative earthquake records to capture the dynamic response of the structure under various seismic scenarios. Subsequently, an EKF-based estimation framework was developed and applied to predict the nonlinear behavior of the structure, enabling accurate tracking of responses beyond the elastic range. Comparison of the predicted and actual responses demonstrated excellent agreement, confirming the effectiveness of EKF in modeling complex nonlinear seismic behaviors. These results underline the potential of the proposed procedure for enhancing performance-based seismic design and improving safety and resilience of tall structures.

کلیدواژه ها:

High-rise steel structures ، Nonlinear response prediction ، Extended Kalman Filter ، Time history analysis