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.
Highlights
This study investigates the performance of the surface blast load acting on Moment Resistance Frames (MRF)with a novel slip load friction damper
Simulations have been carried out using the MATLAB platform and the results indicated the accuracy and efficiency of the proposed novel friction damper with single and double slip load friction damper [63 - 65]
The first stage is the calculations of the peak reflected pressure obtained from the time history values of the blast load and the second stage is the calculations of the blast force at each floor of the joint from converting the blast pressure on the area of the joint and results in the performance analysis of the structure
Summary
This study investigates the performance of the surface blast load acting on Moment Resistance Frames (MRF)with a novel slip load friction damper. The performance of the civil structural systems with extreme events such as blast load leads to excessive devastations over the last decade [1]. The blast resistance design of the structure is needed nowadays because detonations of targeting civil structures and commercial structures occur due to more than 20% of attacks. Devastating high-risk structure, military structure, and commercial structure [2].The rapid industrialization's growth leads to both internal and external explosives, it is necessary to resist the structure against the blast load [3, 4]. The response of the dome structure due to blast load is calculated [10,11]. The numerical simulations and experimental method of the column with FRP retrofitted exposed to blast load were analyzed [12]. The steel frame building with different configurations are charge weight as an uncertain parameter, detonation location, standoff distance, and column
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