Modified Damage Index Calculation Method for Frame-Shear Wall Building Considering Multiple Demand Parameters

In this study, multiple objectives on earthquake damage assessment procedures have been investigated. The Unified performance-based design (UPBD) method was primarily used to design the Reinforced Concrete (RC) frame shear wall building. The nonlinear dynamic analysis is performed considering spectrum compatible ground motions (SCGM) as per EC-۸ demand spectrum at ۰.۴۵g level and type B soil condition. It estimated the Damage index (DI) of the building by using Park and Ang method. This method is highly time-consuming as the storey height increases. Hence, it is not suitable for large scale investigation. Therefore, a new approach has been suggested to reduce the computational time and efforts in the case of complex structures to evaluate the global damage index (GDI). In this present study, the most three influencing parameters of the building has been considered to find the global damage index (GDI). And it has also been observed that the most damage occurs on the ground storey of the building compared to the remaining floors. The suggested method efficiently calculates a reliable GDI that can assess building damage from small to large scale.

Keywords:

RC frame shear wall building , Correlation Matrix , EDPs , Damage Evaluation , NLTHA , Global Damage index (GDI)