1990年フィリピン地震の地盤震動強度と構造物の被害

Abstract

This is a survery report, in which the damage to structures done by the 1990 Philippin Earthquake and the intensity of ground shaking during the earthquake are discussed. No strong motion acceletographs were available for areas 100 to 150 kilometers from the epicenter.We therefore calculated the theoretical distribution of maximum accelerations in the region near the earthquake souce. The calculated intensty of gruond motion was compared with the estimated maximum acceleration levels from fallen religious statues in churches. The survey results on heavily damaged bridges especialy failure modes are discussed.The slope filures along the falut extent are also discussed.