AN ORIGINAL APPROACH TO DERIVE SEISMIC FRAGILITY CURVES - APPLICATION TO A PWR MAIN STEAM LINE

摘要

Seismic fragility curves express the conditional probability of failure of a structure or component for a given seismic input motion parameter. The methodology presented in this paper aims at studying the seismic coupled response of ground, structures and components in a time history analysis. The methodology involves multiple numerical calculations in a short amount of time and the fragility curve is derived by applying linear regression methods traditionally used in the nondestructive testing field.