Distribution of seismic hazard and risk analysis of buried pipelines in Taiwan

Based on the seismicity and tectonics of Taiwan area, a set of potential earthquake sources is identified. Using available attenuation laws and fault-rupture model, the individual influences of potential sources are integrated into the probability distribution of maximum annual intensity and peak acceleration. The results are presented in the form of seismic risk maps for a 475-year return period. Qased on the result of this study, it concludes that the seismic hazard potential for the central region is moderate, but it is high for east- coast region.This paper also presents a reliability analysis method for safety evaluation of buried pipelines in Taiwan region. The results of the reliability analysis of the buried pipelines subjected to earthquake ground accelerations are presented and a fragility result for peak ground acceleration (PGA) studies is also constructed.