Seismic Response of R.C.C. Framed Buildings with Different Brace Patterns

Authors:

R.S. Malik (National Institute of Technology, Kurukshetra)

S.K. Madan (National Institute of Technology, Kurukshetra)

V.K. Sehgal (National Institute of Technology, Kurukshetra)

Keywords: Mega Braces, Chevron Braces, SMRF, CQC, Shear force.

Abstract:

Framed structures combined with Braces have been widely used for lateral load resistance in tall buildings. Braces are generally provided for full height of the frames and can be provided in various patterns. Each pattern of braces has an independent effect on the seismic response of reinforced concrete frames. This concept has been extended to symmetrical reinforced cement concrete special moment resisting frames (SMRF) by providing K. X, Diagonal, chevron and mega types of braces. Efforts have been made to find out the effects of different kinds of braces on lateral load resistivity of the structure under dynamic earth-quake shaking. 3-D models of SMRF with braces have been dynamically analyzed. The comparative study has revealed that Mega Braces can preferably be provided to considerably enhance the lateral strength of SMRF.