Influence Of Overstrength Factor on The Global Seismic Performance Of Reinforced Concrete Structure

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In recent years, designs of earthquake resistance structures using performance based design philosophies are developed. Nowadays, prediction of inelastic seismic responses and the evaluation of seismic performance of a structural building are very important subjects. This study is focused on capacity design philosophy approach. The criteria and requirements used for the design of the building using capacity design philosophies are adopted according to the provision of EBCS EN 1998-1:2014. The comparison of global seismic performance of the structures is assessed in detail using four structural parameters quantitatively. In this study a ten story regular framed reinforced structure was selected and structural modeling and analysis of the structure was done using ETABS 2016.1.0 software. The lateral force method of analysis was used for seismic action effects. Then the structure was designed using capacity design philosophy using four different column-beam overstrength factors according to the requirements of the code. The detailing of critical regions was done carefully for the required energy dissipation. After the buildings have been designed for the incoming earthquake, the performance evaluation of the buildings was done using static nonlinear analysis methods. Finally, the influence of overstrength factor on the global seismic performance of the structure was discussed. The parameters used for the evaluation of seismic performance of the structures are capacity curve, story displacement, interstory drift and plastic hinge distribution of the building.



Capacity Design, Capacity Curve, Ductility Class, Performance Level, Overstrength Factor, Plastic Hinge, Pushover Analysis