Kalibhat, Madhusudan G and Kamath, Kiran and Prasad, S K and Pai, Ramya R (2014) Seismic performance of concentric braced steel frames from pushover analysis. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE). pp. 67-73. ISSN 2278-1684

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Abstract

The present study focuses on the effect of a provision of concentric bracings on the seismic performance of the steel frames. In the present study two different types of concentric bracings (viz. X and inverted-V type bracing) have been considered for the different storey levels. For this purpose, ETABS, Finite Element software has been used and the comparison between the performances of 1- bay X and inverted–V type and unbraced frames is made using pushover curves. Base shear carried, roof displacement generated and the number of hinges formed are the parameters used to identify the seismic performance of the frames. It is inferred that the effect of a provision of bracing will increase the strength of the steel frames and roof displacement undergone by the frame gets reduced considerably in braced frame

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