RESEARCH ARTICLE


Response Control of Structures with Friction Dampers under Blast Loading



Kupphalli Krishne Gowda Kiran1, Ehsan Noroozinejad Farsangi2, *
1 SJB Institute of Technology, Bangalore, Karnataka, India
2 Faculty of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran


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Creative Commons License
© 2021 Kiran and Farsangi

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Faculty of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran;
E-mail: noroozinejad@kgut.ac.ir


Abstract

Introduction:

This study investigates the performance of the surface blast load acting on Moment Resistance Frames (MRF)with a novel slip load friction damper. Recently the world is facing terrorist activities that lead to the damage of the structures, including commercial, industrial, and public buildings.

Methods:

These structures should be protected by using control devices. Friction damper is a passive damping device that absorbs maximum energy released during vibrations. Blast loads are calculated based on empirical equations.In this study, single slip and double slip load friction dampers considering the hysteresis loops are used for controlling the response of the MRFs exposed to blast loadings.

Results:

The four storey, eight storey, and twenty storey MRFs with surface blast responses are controlled by using single and double slip load friction dampers. The response includes displacement, accelerations, velocity, storey drift, storey drift ratio, pressure impulse curve, etc. The torsional effect with two dimensions is considered for the high-rise structure as well.

Conclusion:

It was concluded that using friction dampers plays a vital role in controlling the response of MRFsunder blast loadings.

Keywords: Blast load, Pressure impulse curve, MRF, FSDL, FSSL, Storey drift, Storey drift ratio.