PERFORMANCE-BASED SEISMIC SAFETY ASSESSMENT METHOD OF WATER NETWORK SYSTEM

Abstract

 Performance-based seismic assessment for water pipeline system has not been generalized in the several decade in Japan, Even though the performance-based approach is forced, it cannot be proceeded without the goal of performance. The seismic safety performance of Level 1, 2, 3 in the Japanese design code is developed based on reliability approach in which any appropriate goal of seismic design should be given in terms of the safety index for water supply authority, pipe suppliers and pipeline construction companies. Example study of the model network shows that the safety index of pipe joint should be 3.2~3.7 in order to obtain the performance level of 0.2~0.8 for water supply at the target demand.