Evaluation of the seismic behavior of SAC steel frame buildings retrofitted with viscous dampers affected by far and near fault earthquakes

Document Type : Research Article

Authors

1 Graduate / International Institute of Seismology and Earthquake Engineering

2 Department of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh, Iran

3 Faculty / International Institute of Seismology and Earthquake Engineering

Abstract

Researchers have recently considered ways to increase the strength of and damping of the structures against earthquake loads so as to reduce maintenance and maintenance costs while enhancing safety. These solutions include the combination of steel frames with viscous dampers as the most vital part. Additionally, one of the most powerful tools in passive control is viscous dampers, which absorb earthquake energy and reduce the structure's response to earthquakes. Therefore, we have undertaken this study to investigate the response of standard SAC frames, built-in three, nine, and twenty floors, by applying this structural system to seismic loadings. The issue was first investigated using the Abaqus software package's numerical model of the viscous damper. Then, the effect of applying acceleration of faults of far and near-field Imperial Vali, Lomaprita, and Northridge earthquakes on the behavior of this structural system is evaluated separately. The results include floor drift, load-carrying capacity (as maximum base shear), and energy absorption of the structure (in two External working modes and strain energy) are discussed. Applied viscous dampers resulted in an average 200% decrease in drift, a 30% increase in load-carrying capacity, and a 35% increase in energy absorption in SAC standard steel structures after the application of these dampers.

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References

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Amirkabir Journal of Civil Engineering
Volume 54, Issue 5
August 2022
Pages 1983-2004

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