The intelligent seismic retrofitting of structure based on the magnetorheological dampers

Xiu-ling Li; Hong-nan Li

doi:10.1117/12.815982

6 April 2009 The intelligent seismic retrofitting of structure based on the magnetorheological dampers

Xiu-ling Li, Hong-nan Li

Proceedings Volume 7288, Active and Passive Smart Structures and Integrated Systems 2009; 72880V (2009) https://doi.org/10.1117/12.815982
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

Based on the state-of-the-art about seismic damage principles and aseismic strengthening technology, analysis and design method of seismic retrofitting for earthquake damaged reinforced concrete frame using magnetorheological (MR) damper is proposed. Three levels of fortification objects are put forward and quantified or intelligent retrofitting of reinforced concrete frame using MR damper. The experiment system of a three-floor reinforced concrete frame-shear wall eccentric structure has been built based on Matlab/Simulink software environment and hardware/software resources of dSPACE. The shaking table experiment of seismic retrofitting of earthquake damaged reinforced concrete frame-shear wall structure using MR damper is implemented using rapid control prototyping (RCP) technology. The validity of passive control strategies and semi-active control strategy is verified under El Centro earthquake excitations with different peak value. The experimental results indicate that MR dampers can significantly enhance aseismic performance level of the seismic damaged reinforced concrete frame, and meet all the earthquake fortification levels. The aseismic ability of MR damper intelligent aseismic structure system of auto-reinforcement is much better than both the damaged structure and the aseismic structure reinforced by the passive damper.

Citation Download Citation

Xiu-ling Li and Hong-nan Li "The intelligent seismic retrofitting of structure based on the magnetorheological dampers", Proc. SPIE 7288, Active and Passive Smart Structures and Integrated Systems 2009, 72880V (6 April 2009); https://doi.org/10.1117/12.815982

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KEYWORDS

Earthquakes

Control systems

Intelligence systems

Electroluminescence

Civil engineering

Lithium

Prototyping

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