effect of the near-field ground motion pulse period on the seismic reliability of rc/mr frames using monte carlo simulation

Study of the random nature of structural parameters such as material properties, external loads and geometric dimensions, have led to the development of research on classical methods of modeling. classical modeling methods based on the deterministic decisions do not meet the designer's functional requirements. in order to reduce the structuralcapacity uncertainty, new decision-making methods based on probabilities have been developed. reliability theory is a tool that gives a probabilistic estimate of the structural design safety factors. one of the source of uncertainty is the ground motion characteristics. near-field ground motion with directivity focusing or fling effects produces pulse-likeground motion that has characteristics different from those of far field records. large peak ground velocity and displacement, energy concentration in one or a few pulses and also unusual response spectrum shape are the main characteristics of the near field ground motion records.