ENERGY-BASED DAMAGE ASSESSMENT OF RCMRFS USING PUSHOVER

In this study, an energy-based damage index (𝐷𝐼𝐸) was introduced and expressed as a simple formula on the basis of the nonlinear response obtained from nonlinear static procedures. The 𝐷𝐼𝐸 is advantageous because pushover analysis has to be performed only once for the lateral loads obtained from the equivalent static method given in the IS 1893 to represent the degree of damage to the structure under consideration. The 𝐷𝐼𝐸 was employed to assess the damage sustained by example RC frames representing different structures. To extend 𝐷𝐼𝐸 to different performance levels defined in the FEMA 356, the damage values were associated with the drift-based damage index. The results indicated that the 𝐷𝐼𝐸 concurred with drift-based damage criterion, and it is a valuable tool for practical applications.