The effects of earthquake and tsunami loadings on structural behavior of reinforced concrete building

Abstract

This study aimed to evaluate the performance of structures such as drift ratios and internal forces arising on structural components due to earthquake and tsunami loads. The structures were modeled in three dimensions with varying heights of 3, 5, and 7-story according to the allowable building height in Bali, Indonesia. The earthquake load was designed in accordance with Indonesian standard SNI-1726-2012 and Tsunami loading refers to FEMA P646-2012. Three different loads were applied namely earthquake load, combined tsunami load 1 (T1), and combined tsunami load 2 (T2). The results showed that the drift ratios of the 3-story building structure subjected to all loads meets the criteria for a building with risk category IV, should less than 1%. However, for the 5 and 7-story building structures, the drift ratio on the first floor was only due to the earthquake load fulfilled (<1%). The drift ratio of 1.44% and 2.13% respectively were due to the loads T1 and T2 for 5-story and 2.88% and 4.67% for the 7-story building. These results indicated that the 5-story and 7-story building structure is unable to withstand the lateral forces due to the tsunami load neither load T1 nor T2.