Effect of infills on seismic behaviour of RC frames

Kamath, Kiran and Kalibhat, Madhusudan G and Pai, Ramya R (2014) Effect of infills on seismic behaviour of RC frames. In: Proceedings of the First Annual Conference on Innovations and Developments in Civil Engineering, , 19-20 May 2014 , NITK, Surathkal, India..

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Abstract

Masonry infills are normally considered as non-structural elements and their stiffness contributions are generally ignored in practice, but these infills behave as a constituent part of the structural system and tend to interact with it thus enhancing the stiffness and strength of the structural system when subjected to seismic forces. Many urban multi-storey structures have a traditional practice of having open ground storey for parking or reception lobbies, which leads to reduced stiffness in that storey compared to the rest. In the present study an attempt has been made to compare the seismic performance of both infilled and bare Reinforced Concrete (RC) frames. For this purpose, 2D RC frames with different structural configuration (viz. Number of storeys, number of bays and location of infill) are considered and their seismic performance is assessed with the help of pushover curves. ETABS, a finite element software is used to carry outpushover analysis. Base shear carried, roof displacement undergone, number of hinges formed are the parameters used to assess the seismic performance of soft storey RC frames. It is inferred that the structures with infill possess greater stiffness when compared to bare frame.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Equivalent diagonal strut,infill, pushover analysis, RC frames, soft storey.
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 30 Jun 2014 07:32
Last Modified: 30 Jun 2014 07:32
URI: http://eprints.manipal.edu/id/eprint/139988

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