Abstract
Building responses have become a major concern in design research. Passive control techniques are implemented to improve structure efficiency. The present research aims to assess the efficiency of base isolation system for a 2D frame and to enhance the performance of structures that are subjected to seismic ground excitations and ground vibrations induced by blast. Two moments of resistant RC frames were studied and output of the isolator (Lead / Rubber Bearing) was observed to reduce structural responses. In SAP2000 non-linear dynamic analysis is conducted to compare normal and irregular moment-resistant frames and structural responses with and without passive control techniques. Isolators are constructed based on time of isolation. Reduction of structural responses is assessed by passive control techniques, and comparative analysis is performed. Mitigating systemic retaliation is affected by the implementation of passive control system.
Highlights
Improvements are being found worldwide in the field of structural engineering
Base isolation technique are the most commonly used methods of structural enhancement under complex loads in recent years, and Indian codes have developed some guidelines for blast load calculations based on their results
In Manchalwar and Bakre [8,9], the use of passive control device (X-plate damper) and its effectiveness in mitigating the structural responses are studied for seismic loading
Summary
There are many different types of structures being designed depending upon requirements. In Omprakash Reddy et al.[3], efficiency of momentary building resistance under dynamic loadings is studied. Blast loading parameters such as peak ground accelerations are determined using study of Ranjan et al[4] for different soil properties. Ruiyang and Brain observe the efficiency of the base isolated structure and its behavior under seismic loading [5]. In Manchalwar and Bakre [8,9], the use of passive control device (X-plate damper) and its effectiveness in mitigating the structural responses are studied for seismic loading. Manchalwar and Bakre determine optimal position for enhancing damper performance in energy dissipation [12, 13, 14]
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