抄録
A practical estimation method with fundamental statistics is discussed in this paper, where First Order 2nd Moment Method (FOSM) is applied to estimation for probability distribution of seismic fragility of the in-ground structures. First, As a case study, accurate earthquake response analysis is carried out for Daikai Station severely damaged during the Great Hanshin Earthquake (1995), which is able to consider interaction effect and non-linear behavior of Soil-Structure Interaction-system. Monte Carlo simulation (MCS) is carried out in the same way as numerical experiments. Several estimation techniques are tried to approximate the result of MSC. As a result, it is found that a practical method is useful to estimate the variation of seismic response of in-ground RC structure, even if non-linear response of it was considered.
