The estimation of reliability of system subjected to earthquake excitations is an important problem for aseismic design. The reliability of such system should be evaluated in probabilistic manner. The first excursion failure is one of the most important failure modes of structures and also one factor of reliability. Many structures have nonlinear characteristics. Hysteresis loop characteristic caused by plastic deformation is one of the most common nonlinear characteristics observed in pressure vessels and piping systems. In this paper, an estimation method for the first excursion probability of structure with hysteresis loop characteristic is proposed. The first excursion probability is the function of many parameters, which is obtained by using artificial time histories. It is shown that when the tolerance level is normalized by the expected values of the maximum response of the structures, the first excursion probability can be shown to be independent of many parameters.

Issue Section:
Seismic Engineering
Keywords:
earthquake engineering, failure analysis, hysteresis, pipes, plastic deformation, pressure vessels, probability, reliability, seismology, structural engineering
Topics:
Earthquakes, Excitation, Probability, Reliability, Damping, Deformation, Pressure vessels
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