Energy-Based Simplified Damper Design Methodology for Seismic Torsional Vibration Control of Buildings with Experimental Verification

ABSTRACT

An energy-based damper design methodology is presented to achieve equal displacement at the building edges for torsionally coupled existing new buildings. Considering ductile and non-ductile RC buildings ranging from simple to complex types involving vertical irregularities, the effectiveness of the proposed methodology is studied. Shake table tests are carried out on an L-shape small-scale building model with viscoelastic dampers. The torsional response is significantly reduced by designing the dampers as per the proposed methodology. These methodologies help the designer to achieve damping constants for multistory asymmetric plan buildings using design spreadsheets with a few iterations in the damper design.

KEYWORDS:

• Plan asymmetry
• RC buildings
• torsional response
• passive dampers
• energy-based design
• vertical irregularities

Acknowledgments

High Performance Computer: The authors would like to specially thank DST-SERB core research Grant (CRG/2021/005463) for providing the computational facility.

Shake Table Testing Facility: The authors would like to express gratitude to DST-FIST (SR/FST/ETI-352/2013), DST-SERB early carrier research Grant (CRG/2021/005463) and BITS Pilani Hyderabad Campus for providing the experimental testing facility.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

All data, models, or code that support the findings of this study are available from the corresponding author, [CH. B. V. Hareen] upon reasonable request.

Additional information

Funding

The work was supported by the Department of Science and Technology, Ministry of Science and Technology, India [CRG/2021/005463, SR/FST/ETI-352/2013].