The Use Of Seismic Energy And Damage Index For Assesment Seismic Performance Of Building Under Seismic Excitation

Abstract

Seismic input energy is transmitted into building consists of the kinetic energy, elastic strain energy, damping energy, and hysteretic energy. The amount of the input energy induced by earthquake transmitted into a building depends on earthquake characteristics and building dynamic properties. In this context, the hysteretic energy directly associated with damage to structural members through a parameter which known as the damage index were introduced. For this purposes, influence of earthquake characteristic on energy spectra for SDOF system were described and presented. In addition, influence of structural dynamic properties are also described and discussed. Next, to assess the damage potential to a building under seismic excitation, four story steel moment resisting frame were investigated under three selected ground motion records matching to the response spectra design the new Indonesian code. Furthermore, nonlinear dynamic time history analysis were performed using ABAQUS to obtain responses parameters in term of base shear, drift, input and hysteretic energy. Finally, the seismic performance of the building based on Park and Ang damage index model is presented and summarized.