An Evaluation of Reliability of Airport Function due to Composite Damage of Earthquake and Tsunami

Abstract

Reliability evaluation of airport function due to earthquake occurrence is required to check seismic performance of the airports. On the other hand, many airports in Japan are located in the coastal area including the artificial island type. Therefore, it is necessary to evaluate the reliability of the airport function due to composite damage caused by earthquake motions, liquefaction and tsunami. We propose a method to evaluate the reliability of airport functions considering composite damage, in this paper. The proposed method is applied to the coastal area airport in the Kyushu region, and we evaluate the soundness curves in consideration of composite damage in case of inland earthquake and Nankai megathrust earthquake, respectively.