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<doi>10.14455/ISEC.2022.9(2).STR-21</doi>
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SEISMIC PERFORMANCE OF REINFORCED CONCRETE FRAME WITH CONCRETE JACKETED COLUMNS
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Ajay Sinha, Praveen Anand
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<abstract>
<title>ABSTRACT</title>
<p>The study presents the effectiveness of Reinforced Concrete (RC) jacketed columns in 
enhancing the seismic performance of a five-story RC frame. The performance of the 
structure is examined using a non-linear static method also known as pushover 
analysis. The retrofitting approach used in this study is a local level approach and its 
effect on the global behaviour of the frame. SAP 2000 has been used to perform the 
analysis for the frames before and after jacketing the columns. The sequence of hinges 
formation has been studied for both frames. The change in ductility capacity and elastic 
stiffness before and after jacketing of the columns is obtained using bilinear curves. 
Both the structural parameters calculated for existing and jacketed structures showed a 
substantial increase in their respective values after jacketing. Variation of base shear 
for both the frames is obtained using capacity curves or pushover curves. The pushover 
curve obtained as a result of static nonlinear analysis indicated a considerable increase 
in the strength of the jacketed frame which is almost double the capacity of the existing frame</p>
<p><italic>Keywords: </italic>Non-linear Static Procedure, Pushover Analysis, Capacity Curve, Hinges</p>
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