E. Juliafad, K. Meguro
Reinforced Concrete (RC) building becomes the most populated building type in the world, including in Indonesia. However, the history of the earthquake in Indonesia shows that the vulnerability of RC building is high and contributed to the loss of many lives. Inadequate concrete works become one of the main causes of the low quality of RC building that contributes to the damage of RC buildings. To reduce the risk of RC building due to earthquake, the effective assessment tool that can predict and observe the damage probability as well as the performance of the selected typical building under earthquake excitation is important, named seismic fragility function. Some fragility function has been developed in Indonesia. However, the fragility function for low storey RC building that built based on the actual concrete strength in Indonesia is yet available. Hence, this study aimed at developing the seismic fragility function that can show the performance of low storey RC building type based on the actual concrete strength in Indonesia. The development of fragility function used the numerical analytical method based on Incremental Dynamic Analysis (IDA) by using the Applied Element Method (AEM). AEM enables the observation of damage patterns to justify the damage state from no damage, slight, moderate, severe, till total collapse state. The derivation of fragility function used the lognormal distribution function. Then the multiple fragility curve was developed. The results show that RC building with strong concrete (26 MPa) will collapse at 0,65g while the one with weak concrete (10 MPa) will collapse faster at 0.31g. © The 17th World Conference on Earthquake Engineering.
Civil Engineering Department, Universitas Negeri Padang, Indonesia; Civil Engineering Department, The University of Tokyo, Japan
