DEVELOPMENT OF DISCRETE WATER PIPE DAMAGE ESTIMATION BASED ON PAST SEISMIC DAMAGE MODE IN JAPAN

Abstract

 In this study, we developed a discrete water pipeline dagame estimation method that can be used for pipe network analysis considering damage to water pipelines based on data on the damage mode of pipelines in past earthquake disasters in Japan. the existing pipeline damage data were classified into leakage and deviation, and the occurrence ratio of each type of pipeline was clarified in the development of the damage mode estimation model. Based on a statistical study of the existing pipelines, water pipeline damage fragility curves were developed using the maximum likelihood estimation method for each pipe type. As a result, a discrete water pipeline damage estimation model was established, which can be used for pipe network analysis considering water pipeline damage.