Retrofitting of soft storey building by using different bracing system due to earthquake load

Abstract

In this research, one residential building of soft storey situated at Seremban, Negeri Sembilan is selected. SAP 2000 which is structural analysis software is being used to determine the maximum displacement and base shear of the soft storey. Four different types of model are introduced to do the modeling. Acheh, Indonesia earthquake data is considered for time history analysis. The comparison of these models for different type of bracing system like X bracing type and V bracing type is carried out. Based on this comparative study, it can conclude that model 3 which is V bracing type is the best and effective method of bracing system for soft storey building. From the result obtained, it shown that V bracing has the lowest value for maximum displacement compared other 3 models. In addition, V bracing type also showed the lowest value of base shear. Thus, it proved that V bracing type reduces the maximum displacement and base shear of the soft storey building.