Comparative study of buckling restrained braces and fluid viscous damper applied in an RCC structure following pushover analysis

Abstract

Energy dissipators are widely used to enhance structural performance against wind and seismic activities. Since India is an earthquake-prone country, displacement-dependent (an example: buckling restrained bracing), and velocity-dependent (an example: fluid viscous damper) both types of energy dissipators are becoming more well-known and widely used to lessen the effects of seismic occurrences. Although most of the study about the application and performance evaluation of energy dissipators like buckling restrained braces (BRB) and fluid viscous damper (FVD) were based on steel and composite structure, reinforced cement concrete (RCC) building makes up the majority of structures in India, and a large number of RCC building structure are not capable to resist damage due to seismic activity. Additionally, nonlinear static analysis-based comparative information concerning BRB and FVD is very few. This study focused on a comparison of two energy dissipators- a) buckling restrained bracing (BRB) and b) fluid viscous damper (FVD) used in an RCC structure following pushover analysis to produce a pushover curve and evaluate structural performance. Four Ground floor + 14 (G + 14) storey RCC structures were created according to Indian Standard (IS) provisions in Extended Three-Dimensional Analysis of Building System (ETABS) software and applied BRB and FVD separately in diagonal and inverted V shapes. To compare structural responses with BRB and FVD independently, the results of the diagonal and inverted V systems have been explored. All the data were acquired by utilizing response spectrum sources developed under IS 1893:2016 following ASCE 41–13 NSP graphical display for static pushover curve in ETABS. It has been determined that the sample BRB has performed more admirably than FVD in both circumstances while using a diagonal and inverted V bracing system. But in large displacement FVD tends to increase performance. BRB is stiffer than FVD, allowing it to be used to raise the structure's stiffness as needed. It is essential to consider the seismic weight of BRB and FVD while designing a new building or retrofitting and restoring a structure.